configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case $v in $pat) printf '%s ' $v ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_safe(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_safe(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_safe(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_safe(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 do_check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740         append allopts $cfg
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_con="\$${cfg}_conflict"
 745         eval dep_sel="\$${cfg}_select"
 746         eval dep_sgs="\$${cfg}_suggest"
 747         eval dep_ifa="\$${cfg}_if"
 748         eval dep_ifn="\$${cfg}_if_any"
 749
 750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753
 754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 760
 761         if enabled $cfg; then
 762             enable_deep $dep_sel
 763             enable_deep_weak $dep_sgs
 764         fi
 765
 766         disable ${cfg}_checking
 767     done
 768 }
 769
 770 check_deps(){
 771     unset allopts
 772
 773     do_check_deps "$@"
 774
 775     for cfg in $allopts; do
 776         enabled $cfg || continue
 777         eval dep_extralibs="\$${cfg}_extralibs"
 778         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 779     done
 780 }
 781
 782 print_config(){
 783     pfx=$1
 784     files=$2
 785     shift 2
 786     map 'eval echo "$v \${$v:-no}"' "$@" |
 787     awk "BEGIN { split(\"$files\", files) }
 788         {
 789             c = \"$pfx\" toupper(\$1);
 790             v = \$2;
 791             sub(/yes/, 1, v);
 792             sub(/no/,  0, v);
 793             for (f in files) {
 794                 file = files[f];
 795                 if (file ~ /\\.h\$/) {
 796                     printf(\"#define %s %d\\n\", c, v) >>file;
 797                 } else if (file ~ /\\.asm\$/) {
 798                     printf(\"%%define %s %d\\n\", c, v) >>file;
 799                 } else if (file ~ /\\.mak\$/) {
 800                     n = -v ? \"\" : \"!\";
 801                     printf(\"%s%s=yes\\n\", n, c) >>file;
 802                 } else if (file ~ /\\.texi\$/) {
 803                     pre = -v ? \"\" : \"@c \";
 804                     yesno = \$2;
 805                     c2 = tolower(c);
 806                     gsub(/_/, \"-\", c2);
 807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 808                 }
 809             }
 810         }"
 811 }
 812
 813 print_enabled(){
 814     suf=$1
 815     shift
 816     for v; do
 817         enabled $v && printf "%s\n" ${v%$suf}
 818     done
 819 }
 820
 821 append(){
 822     var=$1
 823     shift
 824     eval "$var=\"\$$var $*\""
 825 }
 826
 827 prepend(){
 828     var=$1
 829     shift
 830     eval "$var=\"$* \$$var\""
 831 }
 832
 833 unique(){
 834     var=$1
 835     uniq_list=""
 836     for tok in $(eval echo \$$var); do
 837         uniq_list="$(filter_out $tok $uniq_list) $tok"
 838     done
 839     eval "$var=\"${uniq_list}\""
 840 }
 841
 842 add_cppflags(){
 843     append CPPFLAGS "$@"
 844 }
 845
 846 add_cflags(){
 847     append CFLAGS $($cflags_filter "$@")
 848 }
 849
 850 add_cflags_headers(){
 851     append CFLAGS_HEADERS $($cflags_filter "$@")
 852 }
 853
 854 add_cxxflags(){
 855     append CXXFLAGS $($cflags_filter "$@")
 856 }
 857
 858 add_asflags(){
 859     append ASFLAGS $($asflags_filter "$@")
 860 }
 861
 862 add_objcflags(){
 863     append OBJCFLAGS $($objcflags_filter "$@")
 864 }
 865
 866 add_ldflags(){
 867     append LDFLAGS $($ldflags_filter "$@")
 868 }
 869
 870 add_ldexeflags(){
 871     append LDEXEFLAGS $($ldflags_filter "$@")
 872 }
 873
 874 add_ldlibflags(){
 875     append LDLIBFLAGS $($ldflags_filter "$@")
 876 }
 877
 878 add_stripflags(){
 879     append ASMSTRIPFLAGS "$@"
 880 }
 881
 882 add_extralibs(){
 883     prepend extralibs $($ldflags_filter "$@")
 884 }
 885
 886 add_host_cppflags(){
 887     append host_cppflags "$@"
 888 }
 889
 890 add_host_cflags(){
 891     append host_cflags $($host_cflags_filter "$@")
 892 }
 893
 894 add_host_ldflags(){
 895     append host_ldflags $($host_ldflags_filter "$@")
 896 }
 897
 898 add_compat(){
 899     append compat_objs $1
 900     shift
 901     map 'add_cppflags -D$v' "$@"
 902 }
 903
 904 check_cmd(){
 905     log "$@"
 906     "$@" >> $logfile 2>&1
 907 }
 908
 909 check_stat(){
 910     log check_stat "$@"
 911     stat "$1" >> $logfile 2>&1
 912 }
 913
 914 cc_o(){
 915     eval printf '%s\\n' $CC_O
 916 }
 917
 918 cc_e(){
 919     eval printf '%s\\n' $CC_E
 920 }
 921
 922 check_cc(){
 923     log check_cc "$@"
 924     cat > $TMPC
 925     log_file $TMPC
 926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 927 }
 928
 929 check_cxx(){
 930     log check_cxx "$@"
 931     cat > $TMPCPP
 932     log_file $TMPCPP
 933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 934 }
 935
 936 check_objcc(){
 937     log check_objcc "$@"
 938     cat > $TMPM
 939     log_file $TMPM
 940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 941 }
 942
 943 check_cpp(){
 944     log check_cpp "$@"
 945     cat > $TMPC
 946     log_file $TMPC
 947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 948 }
 949
 950 as_o(){
 951     eval printf '%s\\n' $AS_O
 952 }
 953
 954 check_as(){
 955     log check_as "$@"
 956     cat > $TMPS
 957     log_file $TMPS
 958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 959 }
 960
 961 check_inline_asm(){
 962     log check_inline_asm "$@"
 963     name="$1"
 964     code="$2"
 965     shift 2
 966     disable $name
 967     check_cc "$@" <<EOF && enable $name
 968 void foo(void){ __asm__ volatile($code); }
 969 EOF
 970 }
 971
 972 check_inline_asm_flags(){
 973     log check_inline_asm_flags "$@"
 974     name="$1"
 975     code="$2"
 976     flags=''
 977     shift 2
 978     while [ "$1" != "" ]; do
 979       append flags $1
 980       shift
 981     done;
 982     disable $name
 983     cat > $TMPC <<EOF
 984 void foo(void){ __asm__ volatile($code); }
 985 EOF
 986     log_file $TMPC
 987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 989 }
 990
 991 check_insn(){
 992     log check_insn "$@"
 993     check_inline_asm ${1}_inline "\"$2\""
 994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 995 }
 996
 997 check_x86asm(){
 998     log check_x86asm "$@"
 999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     check_cpp "$@" <<EOF && enable_safe $header
1115 #include <$header>
1116 int x;
1117 EOF
1118 }
1119
1120 check_header_objcc(){
1121     log check_header_objcc "$@"
1122     rm -f -- "$TMPO"
1123     header=$1
1124     shift
1125     disable_safe $header
1126     {
1127        echo "#include <$header>"
1128        echo "int main(void) { return 0; }"
1129     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1130 }
1131
1132 check_apple_framework(){
1133     log check_apple_framework "$@"
1134     framework="$1"
1135     name="$(tolower $framework)"
1136     header="${framework}/${framework}.h"
1137     disable $name
1138     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && add_extralibs "$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     headers="$1"
1264     classes="$2"
1265     shift 2
1266     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1267 }
1268
1269 check_pkg_config(){
1270     log check_pkg_config "$@"
1271     name="$1"
1272     pkg_version="$2"
1273     pkg="${2%% *}"
1274     headers="$3"
1275     funcs="$4"
1276     shift 4
1277     disable $name
1278     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1279     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1280     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1281     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1282         enable $name &&
1283         set_safe "${pkg}_cflags"    $pkg_cflags &&
1284         set_safe "${pkg}_extralibs" $pkg_libs
1285 }
1286
1287 check_exec(){
1288     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1289 }
1290
1291 check_exec_crash(){
1292     log check_exec_crash "$@"
1293     code=$(cat)
1294
1295     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1296     # are safe but may not be available everywhere.  Thus we use
1297     # raise(SIGTERM) instead.  The check is run in a subshell so we
1298     # can redirect the "Terminated" message from the shell.  SIGBUS
1299     # is not defined by standard C so it is used conditionally.
1300
1301     (check_exec "$@") >> $logfile 2>&1 <<EOF
1302 #include <signal.h>
1303 static void sighandler(int sig){
1304     raise(SIGTERM);
1305 }
1306 int foo(void){
1307     $code
1308 }
1309 int (*func_ptr)(void) = foo;
1310 int main(void){
1311     signal(SIGILL, sighandler);
1312     signal(SIGFPE, sighandler);
1313     signal(SIGSEGV, sighandler);
1314 #ifdef SIGBUS
1315     signal(SIGBUS, sighandler);
1316 #endif
1317     return func_ptr();
1318 }
1319 EOF
1320 }
1321
1322 check_type(){
1323     log check_type "$@"
1324     headers=$1
1325     type=$2
1326     shift 2
1327     disable_safe "$type"
1328     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1329 }
1330
1331 check_struct(){
1332     log check_struct "$@"
1333     headers=$1
1334     struct=$2
1335     member=$3
1336     shift 3
1337     disable_safe "${struct}_${member}"
1338     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1339         enable_safe "${struct}_${member}"
1340 }
1341
1342 check_builtin(){
1343     log check_builtin "$@"
1344     name=$1
1345     headers=$2
1346     builtin=$3
1347     shift 3
1348     disable "$name"
1349     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1350 }
1351
1352 check_compile_assert(){
1353     log check_compile_assert "$@"
1354     name=$1
1355     headers=$2
1356     condition=$3
1357     shift 3
1358     disable "$name"
1359     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1360 }
1361
1362 require(){
1363     log require "$@"
1364     name_version="$1"
1365     name="${1%% *}"
1366     headers="$2"
1367     func="$3"
1368     shift 3
1369     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1370 }
1371
1372 require_cpp(){
1373     name="$1"
1374     headers="$2"
1375     classes="$3"
1376     shift 3
1377     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1378 }
1379
1380 require_header(){
1381     log require "$@"
1382     header="$1"
1383     shift
1384     check_header "$header" "$@" || die "ERROR: $header header not found"
1385 }
1386
1387 require_cpp_condition(){
1388     log require "$@"
1389     header="$1"
1390     condition="$2"
1391     shift 2
1392     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1393 }
1394
1395 use_pkg_config(){
1396     log use_pkg_config "$@"
1397     pkg="${2%% *}"
1398     check_pkg_config "$@" || return 1
1399     add_cflags    $(get_safe "${pkg}_cflags")
1400     add_extralibs $(get_safe "${pkg}_extralibs")
1401 }
1402
1403 require_pkg_config(){
1404     log require_pkg_config "$@"
1405     pkg_version="$2"
1406     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1407 }
1408
1409 hostcc_e(){
1410     eval printf '%s\\n' $HOSTCC_E
1411 }
1412
1413 hostcc_o(){
1414     eval printf '%s\\n' $HOSTCC_O
1415 }
1416
1417 check_host_cc(){
1418     log check_host_cc "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1422 }
1423
1424 check_host_cpp(){
1425     log check_host_cpp "$@"
1426     cat > $TMPC
1427     log_file $TMPC
1428     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1429 }
1430
1431 check_host_cppflags(){
1432     log check_host_cppflags "$@"
1433     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1434 #include <stdlib.h>
1435 EOF
1436 }
1437
1438 check_host_cflags(){
1439     log check_host_cflags "$@"
1440     set -- $($host_cflags_filter "$@")
1441     check_host_cc "$@" <<EOF && append host_cflags "$@"
1442 int x;
1443 EOF
1444 }
1445
1446 check_host_cpp_condition(){
1447     log check_host_cpp_condition "$@"
1448     header=$1
1449     condition=$2
1450     shift 2
1451     check_host_cpp "$@" <<EOF
1452 #include <$header>
1453 #if !($condition)
1454 #error "unsatisfied condition: $condition"
1455 #endif
1456 EOF
1457 }
1458
1459 cp_if_changed(){
1460     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1461     mkdir -p "$(dirname $2)"
1462     cp -f "$1" "$2"
1463 }
1464
1465 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1466 # system-dependent things.
1467
1468 AVCODEC_COMPONENTS="
1469     bsfs
1470     decoders
1471     encoders
1472     hwaccels
1473     parsers
1474 "
1475
1476 AVDEVICE_COMPONENTS="
1477     indevs
1478     outdevs
1479 "
1480
1481 AVFILTER_COMPONENTS="
1482     filters
1483 "
1484
1485 AVFORMAT_COMPONENTS="
1486     demuxers
1487     muxers
1488     protocols
1489 "
1490
1491 AVRESAMPLE_COMPONENTS=""
1492
1493 AVUTIL_COMPONENTS=""
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500     $AVRESAMPLE_COMPONENTS
1501     $AVUTIL_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526 "
1527
1528 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1529     alsa
1530     appkit
1531     avfoundation
1532     bzlib
1533     coreimage
1534     iconv
1535     jack
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vda
1653     vdpau
1654     videotoolbox
1655     v4l2_m2m
1656     xvmc
1657 "
1658
1659 HWACCEL_LIBRARY_NONFREE_LIST="
1660     cuda_sdk
1661     libnpp
1662 "
1663
1664 HWACCEL_LIBRARY_LIST="
1665     $HWACCEL_AUTODETECT_LIBRARY_LIST
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $HWACCEL_LIBRARY_LIST
1739     $FEATURE_LIST
1740     $LICENSE_LIST
1741     $LIBRARY_LIST
1742     $PROGRAM_LIST
1743     $SUBSYSTEM_LIST
1744     autodetect
1745     fontconfig
1746     linux_perf
1747     memory_poisoning
1748     neon_clobber_test
1749     ossfuzz
1750     pic
1751     thumb
1752     valgrind_backtrace
1753     xmm_clobber_test
1754     $COMPONENT_LIST
1755 "
1756
1757 THREADS_LIST="
1758     pthreads
1759     os2threads
1760     w32threads
1761 "
1762
1763 ATOMICS_LIST="
1764     atomics_gcc
1765     atomics_suncc
1766     atomics_win32
1767 "
1768
1769 AUTODETECT_LIBS="
1770     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1771     $HWACCEL_AUTODETECT_LIBRARY_LIST
1772     $THREADS_LIST
1773 "
1774
1775 ARCH_LIST="
1776     aarch64
1777     alpha
1778     arm
1779     avr32
1780     avr32_ap
1781     avr32_uc
1782     bfin
1783     ia64
1784     m68k
1785     mips
1786     mips64
1787     parisc
1788     ppc
1789     ppc64
1790     s390
1791     sh4
1792     sparc
1793     sparc64
1794     tilegx
1795     tilepro
1796     tomi
1797     x86
1798     x86_32
1799     x86_64
1800 "
1801
1802 ARCH_EXT_LIST_ARM="
1803     armv5te
1804     armv6
1805     armv6t2
1806     armv8
1807     neon
1808     vfp
1809     vfpv3
1810     setend
1811 "
1812
1813 ARCH_EXT_LIST_MIPS="
1814     mipsfpu
1815     mips32r2
1816     mips32r5
1817     mips64r2
1818     mips32r6
1819     mips64r6
1820     mipsdsp
1821     mipsdspr2
1822     msa
1823 "
1824
1825 ARCH_EXT_LIST_LOONGSON="
1826     loongson2
1827     loongson3
1828     mmi
1829 "
1830
1831 ARCH_EXT_LIST_X86_SIMD="
1832     aesni
1833     amd3dnow
1834     amd3dnowext
1835     avx
1836     avx2
1837     fma3
1838     fma4
1839     mmx
1840     mmxext
1841     sse
1842     sse2
1843     sse3
1844     sse4
1845     sse42
1846     ssse3
1847     xop
1848 "
1849
1850 ARCH_EXT_LIST_PPC="
1851     altivec
1852     dcbzl
1853     ldbrx
1854     power8
1855     ppc4xx
1856     vsx
1857 "
1858
1859 ARCH_EXT_LIST_X86="
1860     $ARCH_EXT_LIST_X86_SIMD
1861     cpunop
1862     i686
1863 "
1864
1865 ARCH_EXT_LIST="
1866     $ARCH_EXT_LIST_ARM
1867     $ARCH_EXT_LIST_PPC
1868     $ARCH_EXT_LIST_X86
1869     $ARCH_EXT_LIST_MIPS
1870     $ARCH_EXT_LIST_LOONGSON
1871 "
1872
1873 ARCH_FEATURES="
1874     aligned_stack
1875     fast_64bit
1876     fast_clz
1877     fast_cmov
1878     local_aligned_8
1879     local_aligned_16
1880     local_aligned_32
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     altivec_h
1908     arpa_inet_h
1909     asm_types_h
1910     cdio_paranoia_h
1911     cdio_paranoia_paranoia_h
1912     cuda_h
1913     d3d11_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dlfcn_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     mach_mach_time_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     openjpeg_2_3_openjpeg_h
1934     openjpeg_2_2_openjpeg_h
1935     openjpeg_2_1_openjpeg_h
1936     openjpeg_2_0_openjpeg_h
1937     openjpeg_1_5_openjpeg_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     jack_port_get_latency_range
2026     kbhit
2027     LoadLibrary
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SetConsoleTextAttribute
2043     SetConsoleCtrlHandler
2044     setmode
2045     setrlimit
2046     Sleep
2047     strerror_r
2048     sysconf
2049     sysctl
2050     usleep
2051     UTGetOSTypeFromString
2052     VirtualAlloc
2053     wglGetProcAddress
2054 "
2055
2056 TOOLCHAIN_FEATURES="
2057     as_dn_directive
2058     as_fpu_directive
2059     as_func
2060     as_object_arch
2061     asm_mod_q
2062     attribute_may_alias
2063     attribute_packed
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FUNCS
2115     $THREADS_LIST
2116     $TOOLCHAIN_FEATURES
2117     $TYPES_LIST
2118     atomics_native
2119     dos_paths
2120     libc_msvcrt
2121     makeinfo
2122     makeinfo_html
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     perl
2125     pod2man
2126     section_data_rel_ro
2127     texi2html
2128     threads
2129     uwp
2130     vaapi_drm
2131     vaapi_x11
2132     vdpau_x11
2133     winrt
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     dirac_parse
2146     dvprofile
2147     exif
2148     faandct
2149     faanidct
2150     fdctdsp
2151     flacdsp
2152     fmtconvert
2153     frame_thread_encoder
2154     g722dsp
2155     golomb
2156     gplv3
2157     h263dsp
2158     h264chroma
2159     h264dsp
2160     h264parse
2161     h264pred
2162     h264qpel
2163     hevcparse
2164     hpeldsp
2165     huffman
2166     huffyuvdsp
2167     huffyuvencdsp
2168     idctdsp
2169     iirfilter
2170     mdct15
2171     intrax8
2172     iso_media
2173     ividsp
2174     jpegtables
2175     lgplv3
2176     libx262
2177     llauddsp
2178     llviddsp
2179     llvidencdsp
2180     lpc
2181     lzf
2182     me_cmp
2183     mpeg_er
2184     mpegaudio
2185     mpegaudiodsp
2186     mpegaudioheader
2187     mpegvideo
2188     mpegvideoenc
2189     mss34dsp
2190     pixblockdsp
2191     qpeldsp
2192     qsv
2193     qsvdec
2194     qsvenc
2195     rangecoder
2196     riffdec
2197     riffenc
2198     rtpdec
2199     rtpenc_chain
2200     rv34dsp
2201     sinewin
2202     snappy
2203     srtp
2204     startcode
2205     texturedsp
2206     texturedspenc
2207     tpeldsp
2208     vaapi_1
2209     vaapi_encode
2210     vc1dsp
2211     videodsp
2212     vp3dsp
2213     vp56dsp
2214     vp8dsp
2215     wma_freqs
2216     wmv2dsp
2217 "
2218
2219 CMDLINE_SELECT="
2220     $ARCH_EXT_LIST
2221     $CONFIG_LIST
2222     $HAVE_LIST_CMDLINE
2223     $THREADS_LIST
2224     asm
2225     cross_compile
2226     debug
2227     extra_warnings
2228     logging
2229     lto
2230     optimizations
2231     rpath
2232     stripping
2233 "
2234
2235 PATHS_LIST="
2236     bindir
2237     datadir
2238     docdir
2239     incdir
2240     libdir
2241     mandir
2242     pkgconfigdir
2243     prefix
2244     shlibdir
2245     install_name_dir
2246 "
2247
2248 CMDLINE_SET="
2249     $PATHS_LIST
2250     ar
2251     arch
2252     as
2253     assert_level
2254     build_suffix
2255     cc
2256     objcc
2257     cpu
2258     cross_prefix
2259     custom_allocator
2260     cxx
2261     dep_cc
2262     doxygen
2263     env
2264     extra_version
2265     gas
2266     host_cc
2267     host_cflags
2268     host_extralibs
2269     host_ld
2270     host_ldflags
2271     host_os
2272     ignore_tests
2273     install
2274     ld
2275     ln_s
2276     logfile
2277     malloc_prefix
2278     nm
2279     optflags
2280     nvcc
2281     nvccflags
2282     pkg_config
2283     pkg_config_flags
2284     progs_suffix
2285     random_seed
2286     ranlib
2287     samples
2288     strip
2289     sws_max_filter_size
2290     sysinclude
2291     sysroot
2292     target_exec
2293     target_os
2294     target_path
2295     target_samples
2296     tempprefix
2297     toolchain
2298     valgrind
2299     x86asmexe
2300 "
2301
2302 CMDLINE_APPEND="
2303     extra_cflags
2304     extra_cxxflags
2305     extra_objcflags
2306     host_cppflags
2307 "
2308
2309 # code dependency declarations
2310
2311 # architecture extensions
2312
2313 armv5te_deps="arm"
2314 armv6_deps="arm"
2315 armv6t2_deps="arm"
2316 armv8_deps="aarch64"
2317 neon_deps_any="aarch64 arm"
2318 intrinsics_neon_deps="neon"
2319 vfp_deps_any="aarch64 arm"
2320 vfpv3_deps="vfp"
2321 setend_deps="arm"
2322
2323 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2324
2325 loongson2_deps="mips"
2326 loongson3_deps="mips"
2327 mipsfpu_deps="mips"
2328 mipsdsp_deps="mips"
2329 mipsdspr2_deps="mips"
2330 mips32r2_deps="mips"
2331 mips32r5_deps="mips"
2332 mips32r6_deps="mips"
2333 mips64r2_deps="mips"
2334 mips64r6_deps="mips"
2335 msa_deps="mipsfpu"
2336 mmi_deps="mips"
2337
2338 altivec_deps="ppc"
2339 dcbzl_deps="ppc"
2340 ldbrx_deps="ppc"
2341 ppc4xx_deps="ppc"
2342 vsx_deps="altivec"
2343 power8_deps="vsx"
2344
2345 cpunop_deps="i686"
2346 x86_64_select="i686"
2347 x86_64_suggest="fast_cmov"
2348
2349 amd3dnow_deps="mmx"
2350 amd3dnowext_deps="amd3dnow"
2351 i686_deps="x86"
2352 mmx_deps="x86"
2353 mmxext_deps="mmx"
2354 sse_deps="mmxext"
2355 sse2_deps="sse"
2356 sse3_deps="sse2"
2357 ssse3_deps="sse3"
2358 sse4_deps="ssse3"
2359 sse42_deps="sse4"
2360 aesni_deps="sse42"
2361 avx_deps="sse42"
2362 xop_deps="avx"
2363 fma3_deps="avx"
2364 fma4_deps="avx"
2365 avx2_deps="avx"
2366
2367 mmx_external_deps="x86asm"
2368 mmx_inline_deps="inline_asm"
2369 mmx_suggest="mmx_external mmx_inline"
2370
2371 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2372     eval dep=\$${ext}_deps
2373     eval ${ext}_external_deps='"${dep}_external"'
2374     eval ${ext}_inline_deps='"${dep}_inline"'
2375     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2376 done
2377
2378 aligned_stack_if_any="aarch64 ppc x86"
2379 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2380 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2381 fast_unaligned_if_any="aarch64 ppc x86"
2382 simd_align_16_if_any="altivec neon sse"
2383 simd_align_32_if_any="avx"
2384
2385 # system capabilities
2386 symver_if_any="symver_asm_label symver_gnu_asm"
2387 valgrind_backtrace_conflict="optimizations"
2388 valgrind_backtrace_deps="valgrind_valgrind_h"
2389
2390 # threading support
2391 atomics_gcc_if="sync_val_compare_and_swap"
2392 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2393 atomics_win32_if="MemoryBarrier"
2394 atomics_native_if_any="$ATOMICS_LIST"
2395 w32threads_deps="atomics_native"
2396 threads_if_any="$THREADS_LIST"
2397
2398 # subsystems
2399 dct_select="rdft"
2400 dirac_parse_select="golomb"
2401 error_resilience_select="me_cmp"
2402 faandct_deps="faan fdctdsp"
2403 faanidct_deps="faan idctdsp"
2404 h264dsp_select="startcode"
2405 hevcparse_select="golomb"
2406 frame_thread_encoder_deps="encoders threads"
2407 intrax8_select="blockdsp idctdsp"
2408 mdct_select="fft"
2409 mdct15_select="fft"
2410 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2411 mpeg_er_select="error_resilience"
2412 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2413 mpegaudiodsp_select="dct"
2414 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2415 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2416 vc1dsp_select="h264chroma qpeldsp startcode"
2417 rdft_select="fft"
2418
2419 # decoders / encoders
2420 aac_decoder_select="mdct15 mdct sinewin"
2421 aac_fixed_decoder_select="mdct sinewin"
2422 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2423 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2424 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2425 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2426 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2427 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2428 adpcm_g722_decoder_select="g722dsp"
2429 adpcm_g722_encoder_select="g722dsp"
2430 aic_decoder_select="golomb idctdsp"
2431 alac_encoder_select="lpc"
2432 als_decoder_select="bswapdsp"
2433 amrnb_decoder_select="lsp"
2434 amrwb_decoder_select="lsp"
2435 amv_decoder_select="sp5x_decoder exif"
2436 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2437 ape_decoder_select="bswapdsp llauddsp"
2438 apng_decoder_select="zlib"
2439 apng_encoder_select="llvidencdsp zlib"
2440 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2441 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2442 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2443 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2444 atrac1_decoder_select="mdct sinewin"
2445 atrac3_decoder_select="mdct"
2446 atrac3p_decoder_select="mdct sinewin"
2447 avrn_decoder_select="exif jpegtables"
2448 bink_decoder_select="blockdsp hpeldsp"
2449 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2450 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2451 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2452 clearvideo_decoder_select="idctdsp"
2453 cllc_decoder_select="bswapdsp"
2454 comfortnoise_encoder_select="lpc"
2455 cook_decoder_select="audiodsp mdct sinewin"
2456 cscd_decoder_select="lzo"
2457 cscd_decoder_suggest="zlib"
2458 dca_decoder_select="mdct"
2459 dds_decoder_select="texturedsp"
2460 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2461 dnxhd_decoder_select="blockdsp idctdsp"
2462 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2463 dolby_e_decoder_select="mdct"
2464 dvvideo_decoder_select="dvprofile idctdsp"
2465 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2466 dxa_decoder_select="zlib"
2467 dxv_decoder_select="lzf texturedsp"
2468 eac3_decoder_select="ac3_decoder"
2469 eac3_encoder_select="ac3_encoder"
2470 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2471 eatgq_decoder_select="aandcttables"
2472 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2473 exr_decoder_select="zlib"
2474 ffv1_decoder_select="rangecoder"
2475 ffv1_encoder_select="rangecoder"
2476 ffvhuff_decoder_select="huffyuv_decoder"
2477 ffvhuff_encoder_select="huffyuv_encoder"
2478 fic_decoder_select="golomb"
2479 flac_decoder_select="flacdsp"
2480 flac_encoder_select="bswapdsp flacdsp lpc"
2481 flashsv2_decoder_select="zlib"
2482 flashsv2_encoder_select="zlib"
2483 flashsv_decoder_select="zlib"
2484 flashsv_encoder_select="zlib"
2485 flv_decoder_select="h263_decoder"
2486 flv_encoder_select="h263_encoder"
2487 fourxm_decoder_select="blockdsp bswapdsp"
2488 fraps_decoder_select="bswapdsp huffman"
2489 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2490 g729_decoder_select="audiodsp"
2491 h261_decoder_select="mpegvideo"
2492 h261_encoder_select="aandcttables mpegvideoenc"
2493 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2494 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2495 h263i_decoder_select="h263_decoder"
2496 h263p_decoder_select="h263_decoder"
2497 h263p_encoder_select="h263_encoder"
2498 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2499 h264_decoder_suggest="error_resilience"
2500 hap_decoder_select="snappy texturedsp"
2501 hap_encoder_deps="libsnappy"
2502 hap_encoder_select="texturedspenc"
2503 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2504 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2505 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2506 iac_decoder_select="imc_decoder"
2507 imc_decoder_select="bswapdsp fft mdct sinewin"
2508 indeo3_decoder_select="hpeldsp"
2509 indeo4_decoder_select="ividsp"
2510 indeo5_decoder_select="ividsp"
2511 interplay_video_decoder_select="hpeldsp"
2512 jpegls_decoder_select="mjpeg_decoder"
2513 jv_decoder_select="blockdsp"
2514 lagarith_decoder_select="llviddsp"
2515 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2516 magicyuv_decoder_select="llviddsp"
2517 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2518 metasound_decoder_select="lsp mdct sinewin"
2519 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2520 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2521 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2522 mjpegb_decoder_select="mjpeg_decoder"
2523 mlp_decoder_select="mlp_parser"
2524 mlp_encoder_select="lpc"
2525 motionpixels_decoder_select="bswapdsp"
2526 mp1_decoder_select="mpegaudio"
2527 mp1float_decoder_select="mpegaudio"
2528 mp2_decoder_select="mpegaudio"
2529 mp2float_decoder_select="mpegaudio"
2530 mp3_decoder_select="mpegaudio"
2531 mp3adu_decoder_select="mpegaudio"
2532 mp3adufloat_decoder_select="mpegaudio"
2533 mp3float_decoder_select="mpegaudio"
2534 mp3on4_decoder_select="mpegaudio"
2535 mp3on4float_decoder_select="mpegaudio"
2536 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2537 mpc8_decoder_select="mpegaudiodsp"
2538 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2539 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2540 mpegvideo_decoder_select="mpegvideo"
2541 mpeg1video_decoder_select="mpegvideo"
2542 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2543 mpeg2video_decoder_select="mpegvideo"
2544 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2546 mpeg4_encoder_select="h263_encoder"
2547 msa1_decoder_select="mss34dsp"
2548 mscc_decoder_select="zlib"
2549 msmpeg4v1_decoder_select="h263_decoder"
2550 msmpeg4v2_decoder_select="h263_decoder"
2551 msmpeg4v2_encoder_select="h263_encoder"
2552 msmpeg4v3_decoder_select="h263_decoder"
2553 msmpeg4v3_encoder_select="h263_encoder"
2554 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2555 mts2_decoder_select="mss34dsp"
2556 mxpeg_decoder_select="mjpeg_decoder"
2557 nellymoser_decoder_select="mdct sinewin"
2558 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2559 nuv_decoder_select="idctdsp lzo"
2560 on2avc_decoder_select="mdct"
2561 opus_decoder_deps="swresample"
2562 opus_decoder_select="mdct15"
2563 opus_encoder_select="audio_frame_queue mdct15"
2564 png_decoder_select="zlib"
2565 png_encoder_select="llvidencdsp zlib"
2566 prores_decoder_select="blockdsp idctdsp"
2567 prores_encoder_select="fdctdsp"
2568 qcelp_decoder_select="lsp"
2569 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2570 ra_144_decoder_select="audiodsp"
2571 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2572 ralf_decoder_select="golomb"
2573 rawvideo_decoder_select="bswapdsp"
2574 rscc_decoder_select="zlib"
2575 rtjpeg_decoder_select="me_cmp"
2576 rv10_decoder_select="h263_decoder"
2577 rv10_encoder_select="h263_encoder"
2578 rv20_decoder_select="h263_decoder"
2579 rv20_encoder_select="h263_encoder"
2580 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2581 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2582 screenpresso_decoder_select="zlib"
2583 shorten_decoder_select="bswapdsp"
2584 sipr_decoder_select="lsp"
2585 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2586 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2587 sonic_decoder_select="golomb rangecoder"
2588 sonic_encoder_select="golomb rangecoder"
2589 sonic_ls_encoder_select="golomb rangecoder"
2590 sp5x_decoder_select="mjpeg_decoder"
2591 srgc_decoder_select="zlib"
2592 svq1_decoder_select="hpeldsp"
2593 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2594 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2595 svq3_decoder_suggest="zlib"
2596 tak_decoder_select="audiodsp"
2597 tdsc_decoder_select="zlib mjpeg_decoder"
2598 theora_decoder_select="vp3_decoder"
2599 thp_decoder_select="mjpeg_decoder"
2600 tiff_decoder_suggest="zlib lzma"
2601 tiff_encoder_suggest="zlib"
2602 truehd_decoder_select="mlp_parser"
2603 truehd_encoder_select="lpc"
2604 truemotion2_decoder_select="bswapdsp"
2605 truespeech_decoder_select="bswapdsp"
2606 tscc_decoder_select="zlib"
2607 twinvq_decoder_select="mdct lsp sinewin"
2608 txd_decoder_select="texturedsp"
2609 utvideo_decoder_select="bswapdsp llviddsp"
2610 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2611 vble_decoder_select="llviddsp"
2612 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2613 vc1_qsv_decoder_deps="libmfx"
2614 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2615 vc1image_decoder_select="vc1_decoder"
2616 vorbis_decoder_select="mdct"
2617 vorbis_encoder_select="mdct"
2618 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2619 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2620 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2621 vp6a_decoder_select="vp6_decoder"
2622 vp6f_decoder_select="vp6_decoder"
2623 vp7_decoder_select="h264pred videodsp vp8dsp"
2624 vp8_decoder_select="h264pred videodsp vp8dsp"
2625 vp9_decoder_select="videodsp vp9_parser"
2626 webp_decoder_select="vp8_decoder exif"
2627 wmalossless_decoder_select="llauddsp"
2628 wmapro_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_decoder_select="mdct sinewin wma_freqs"
2630 wmav1_encoder_select="mdct sinewin wma_freqs"
2631 wmav2_decoder_select="mdct sinewin wma_freqs"
2632 wmav2_encoder_select="mdct sinewin wma_freqs"
2633 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2634 wmv1_decoder_select="h263_decoder"
2635 wmv1_encoder_select="h263_encoder"
2636 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2637 wmv2_encoder_select="h263_encoder wmv2dsp"
2638 wmv3_decoder_select="vc1_decoder"
2639 wmv3image_decoder_select="wmv3_decoder"
2640 xma1_decoder_select="wmapro_decoder"
2641 xma2_decoder_select="wmapro_decoder"
2642 zerocodec_decoder_select="zlib"
2643 zlib_decoder_select="zlib"
2644 zlib_encoder_select="zlib"
2645 zmbv_decoder_select="zlib"
2646 zmbv_encoder_select="zlib"
2647
2648 # hardware accelerators
2649 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2650 cuda_deps_any="libdl LoadLibrary"
2651 cuvid_deps="cuda"
2652 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2653 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2654 dxva2_extralibs="-luser32"
2655 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2656 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2657 vda_deps="vda_framework pthreads"
2658 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2659 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2660 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2661 xvmc_deps="X11_extensions_XvMClib_h"
2662
2663 h263_vaapi_hwaccel_deps="vaapi"
2664 h263_vaapi_hwaccel_select="h263_decoder"
2665 h263_videotoolbox_hwaccel_deps="videotoolbox"
2666 h263_videotoolbox_hwaccel_select="h263_decoder"
2667 h264_cuvid_hwaccel_deps="cuda cuvid"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_qsv_hwaccel_deps="libmfx"
2678 h264_vaapi_hwaccel_deps="vaapi"
2679 h264_vaapi_hwaccel_select="h264_decoder"
2680 h264_vda_hwaccel_deps="vda"
2681 h264_vda_hwaccel_select="h264_decoder"
2682 h264_vda_old_hwaccel_deps="vda"
2683 h264_vda_old_hwaccel_select="h264_decoder"
2684 h264_vdpau_hwaccel_deps="vdpau"
2685 h264_vdpau_hwaccel_select="h264_decoder"
2686 h264_videotoolbox_hwaccel_deps="videotoolbox"
2687 h264_videotoolbox_hwaccel_select="h264_decoder"
2688 hevc_cuvid_hwaccel_deps="cuda cuvid"
2689 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2690 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va_hwaccel_select="hevc_decoder"
2692 hevc_mediacodec_hwaccel_deps="mediacodec"
2693 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2694 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2695 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2696 hevc_dxva2_hwaccel_select="hevc_decoder"
2697 hevc_qsv_hwaccel_deps="libmfx"
2698 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2699 hevc_vaapi_hwaccel_select="hevc_decoder"
2700 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2701 hevc_vdpau_hwaccel_select="hevc_decoder"
2702 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2703 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2704 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2705 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2706 mpeg_xvmc_hwaccel_deps="xvmc"
2707 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2708 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2709 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2710 mpeg1_vdpau_hwaccel_deps="vdpau"
2711 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2713 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_xvmc_hwaccel_deps="xvmc"
2715 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2716 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2717 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2718 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2721 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_dxva2_hwaccel_deps="dxva2"
2723 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2725 mpeg2_mmal_hwaccel_deps="mmal"
2726 mpeg2_qsv_hwaccel_deps="libmfx"
2727 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2728 mpeg2_vaapi_hwaccel_deps="vaapi"
2729 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_vdpau_hwaccel_deps="vdpau"
2731 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2733 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_xvmc_hwaccel_deps="xvmc"
2735 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2736 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2737 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2738 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2739 mpeg4_mmal_hwaccel_deps="mmal"
2740 mpeg4_vaapi_hwaccel_deps="vaapi"
2741 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2742 mpeg4_vdpau_hwaccel_deps="vdpau"
2743 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2744 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2745 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2746 vc1_cuvid_hwaccel_deps="cuda cuvid"
2747 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2748 vc1_d3d11va_hwaccel_deps="d3d11va"
2749 vc1_d3d11va_hwaccel_select="vc1_decoder"
2750 vc1_d3d11va2_hwaccel_deps="d3d11va"
2751 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2752 vc1_dxva2_hwaccel_deps="dxva2"
2753 vc1_dxva2_hwaccel_select="vc1_decoder"
2754 vc1_mmal_hwaccel_deps="mmal"
2755 vc1_qsv_hwaccel_deps="libmfx"
2756 vc1_qsv_hwaccel_select="qsvdec_vc1"
2757 vc1_vaapi_hwaccel_deps="vaapi"
2758 vc1_vaapi_hwaccel_select="vc1_decoder"
2759 vc1_vdpau_hwaccel_deps="vdpau"
2760 vc1_vdpau_hwaccel_select="vc1_decoder"
2761 vp8_cuvid_hwaccel_deps="cuda cuvid"
2762 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2763 vp9_cuvid_hwaccel_deps="cuda cuvid"
2764 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2765 vp8_mediacodec_hwaccel_deps="mediacodec"
2766 vp8_qsv_hwaccel_deps="libmfx"
2767 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2768 vp9_d3d11va_hwaccel_select="vp9_decoder"
2769 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2770 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2771 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2772 vp9_dxva2_hwaccel_select="vp9_decoder"
2773 vp9_mediacodec_hwaccel_deps="mediacodec"
2774 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2775 vp9_vaapi_hwaccel_select="vp9_decoder"
2776 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2777 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2778 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2779 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2780 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2781
2782 # hardware-accelerated codecs
2783 omx_deps="libdl pthreads"
2784 omx_rpi_select="omx"
2785 qsvdec_select="qsv"
2786 qsvenc_select="qsv"
2787 vaapi_encode_deps="vaapi"
2788 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2789
2790 hwupload_cuda_filter_deps="cuda"
2791 scale_npp_filter_deps="cuda libnpp"
2792 scale_cuda_filter_deps="cuda_sdk"
2793 thumbnail_cuda_filter_deps="cuda_sdk"
2794
2795 nvenc_deps="cuda"
2796 nvenc_deps_any="libdl LoadLibrary"
2797 nvenc_encoder_deps="nvenc"
2798
2799 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2800 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2801 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2802 h264_cuvid_decoder_deps="cuda cuvid"
2803 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2804 h264_mediacodec_decoder_deps="mediacodec"
2805 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2806 h264_mmal_decoder_deps="mmal"
2807 h264_nvenc_encoder_deps="nvenc"
2808 h264_omx_encoder_deps="omx"
2809 h264_qsv_decoder_deps="libmfx"
2810 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2811 h264_qsv_encoder_deps="libmfx"
2812 h264_qsv_encoder_select="qsvenc"
2813 h264_rkmpp_decoder_deps="rkmpp"
2814 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2815 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2816 h264_vaapi_encoder_select="vaapi_encode golomb"
2817 h264_vda_decoder_deps="vda"
2818 h264_vda_decoder_select="h264_decoder"
2819 h264_vdpau_decoder_deps="vdpau"
2820 h264_vdpau_decoder_select="h264_decoder"
2821 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2822 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2823 hevc_cuvid_decoder_deps="cuda cuvid"
2824 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_mediacodec_decoder_deps="mediacodec"
2826 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2827 hevc_nvenc_encoder_deps="nvenc"
2828 hevc_qsv_decoder_deps="libmfx"
2829 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2830 hevc_qsv_encoder_deps="libmfx"
2831 hevc_qsv_encoder_select="hevcparse qsvenc"
2832 hevc_rkmpp_decoder_deps="rkmpp"
2833 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2834 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2835 hevc_vaapi_encoder_select="vaapi_encode golomb"
2836 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2838 mjpeg_cuvid_decoder_deps="cuda cuvid"
2839 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2840 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2841 mpeg1_cuvid_decoder_deps="cuda cuvid"
2842 mpeg1_vdpau_decoder_deps="vdpau"
2843 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2844 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2845 mpeg2_crystalhd_decoder_select="crystalhd"
2846 mpeg2_cuvid_decoder_deps="cuda cuvid"
2847 mpeg2_mmal_decoder_deps="mmal"
2848 mpeg2_mediacodec_decoder_deps="mediacodec"
2849 mpeg2_qsv_decoder_deps="libmfx"
2850 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2851 mpeg2_qsv_encoder_deps="libmfx"
2852 mpeg2_qsv_encoder_select="qsvenc"
2853 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2854 mpeg2_vaapi_encoder_select="vaapi_encode"
2855 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2856 mpeg4_crystalhd_decoder_select="crystalhd"
2857 mpeg4_cuvid_decoder_deps="cuda cuvid"
2858 mpeg4_mediacodec_decoder_deps="mediacodec"
2859 mpeg4_mmal_decoder_deps="mmal"
2860 mpeg4_omx_encoder_deps="omx"
2861 mpeg4_vdpau_decoder_deps="vdpau"
2862 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2863 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2864 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2865 mpeg_vdpau_decoder_deps="vdpau"
2866 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2867 msmpeg4_crystalhd_decoder_select="crystalhd"
2868 nvenc_h264_encoder_select="h264_nvenc_encoder"
2869 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2870 vc1_crystalhd_decoder_select="crystalhd"
2871 vc1_cuvid_decoder_deps="cuda cuvid"
2872 vc1_mmal_decoder_deps="mmal"
2873 vc1_vdpau_decoder_deps="vdpau"
2874 vc1_vdpau_decoder_select="vc1_decoder"
2875 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2876 vp8_cuvid_decoder_deps="cuda cuvid"
2877 vp8_mediacodec_decoder_deps="mediacodec"
2878 vp8_qsv_decoder_deps="libmfx"
2879 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2880 vp8_rkmpp_decoder_deps="rkmpp"
2881 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2882 vp8_vaapi_encoder_select="vaapi_encode"
2883 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2884 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2885 vp9_cuvid_decoder_deps="cuda cuvid"
2886 vp9_mediacodec_decoder_deps="mediacodec"
2887 vp9_rkmpp_decoder_deps="rkmpp"
2888 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2889 vp9_vaapi_encoder_select="vaapi_encode"
2890 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2891 wmv3_crystalhd_decoder_select="crystalhd"
2892 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2893
2894 # parsers
2895 h264_parser_select="golomb h264dsp h264parse"
2896 hevc_parser_select="hevcparse"
2897 mpegaudio_parser_select="mpegaudioheader"
2898 mpegvideo_parser_select="mpegvideo"
2899 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2900 vc1_parser_select="vc1dsp"
2901
2902 # bitstream_filters
2903 mjpeg2jpeg_bsf_select="jpegtables"
2904
2905 # external libraries
2906 aac_at_decoder_deps="audiotoolbox"
2907 aac_at_decoder_select="aac_adtstoasc_bsf"
2908 ac3_at_decoder_deps="audiotoolbox"
2909 ac3_at_decoder_select="ac3_parser"
2910 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2911 alac_at_decoder_deps="audiotoolbox"
2912 amr_nb_at_decoder_deps="audiotoolbox"
2913 avisynth_deps_any="libdl LoadLibrary"
2914 avisynth_demuxer_deps="avisynth"
2915 avisynth_demuxer_select="riffdec"
2916 eac3_at_decoder_deps="audiotoolbox"
2917 eac3_at_decoder_select="ac3_parser"
2918 gsm_ms_at_decoder_deps="audiotoolbox"
2919 ilbc_at_decoder_deps="audiotoolbox"
2920 mp1_at_decoder_deps="audiotoolbox"
2921 mp2_at_decoder_deps="audiotoolbox"
2922 mp3_at_decoder_deps="audiotoolbox"
2923 mp1_at_decoder_select="mpegaudioheader"
2924 mp2_at_decoder_select="mpegaudioheader"
2925 mp3_at_decoder_select="mpegaudioheader"
2926 pcm_alaw_at_decoder_deps="audiotoolbox"
2927 pcm_mulaw_at_decoder_deps="audiotoolbox"
2928 qdmc_at_decoder_deps="audiotoolbox"
2929 qdm2_at_decoder_deps="audiotoolbox"
2930 aac_at_encoder_deps="audiotoolbox"
2931 aac_at_encoder_select="audio_frame_queue"
2932 alac_at_encoder_deps="audiotoolbox"
2933 alac_at_encoder_select="audio_frame_queue"
2934 ilbc_at_encoder_deps="audiotoolbox"
2935 ilbc_at_encoder_select="audio_frame_queue"
2936 pcm_alaw_at_encoder_deps="audiotoolbox"
2937 pcm_alaw_at_encoder_select="audio_frame_queue"
2938 pcm_mulaw_at_encoder_deps="audiotoolbox"
2939 pcm_mulaw_at_encoder_select="audio_frame_queue"
2940 chromaprint_muxer_deps="chromaprint"
2941 h264_videotoolbox_encoder_deps="pthreads"
2942 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2943 libcelt_decoder_deps="libcelt"
2944 libfdk_aac_decoder_deps="libfdk_aac"
2945 libfdk_aac_encoder_deps="libfdk_aac"
2946 libfdk_aac_encoder_select="audio_frame_queue"
2947 libgme_demuxer_deps="libgme"
2948 libgsm_decoder_deps="libgsm"
2949 libgsm_encoder_deps="libgsm"
2950 libgsm_ms_decoder_deps="libgsm"
2951 libgsm_ms_encoder_deps="libgsm"
2952 libilbc_decoder_deps="libilbc"
2953 libilbc_encoder_deps="libilbc"
2954 libkvazaar_encoder_deps="libkvazaar"
2955 libmodplug_demuxer_deps="libmodplug"
2956 libmp3lame_encoder_deps="libmp3lame"
2957 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2958 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2959 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2960 libopencore_amrnb_encoder_select="audio_frame_queue"
2961 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2962 libopenh264_decoder_deps="libopenh264"
2963 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2964 libopenh264_encoder_deps="libopenh264"
2965 libopenjpeg_decoder_deps="libopenjpeg"
2966 libopenjpeg_encoder_deps="libopenjpeg"
2967 libopenmpt_demuxer_deps="libopenmpt"
2968 libopus_decoder_deps="libopus"
2969 libopus_encoder_deps="libopus"
2970 libopus_encoder_select="audio_frame_queue"
2971 librsvg_decoder_deps="librsvg"
2972 libshine_encoder_deps="libshine"
2973 libshine_encoder_select="audio_frame_queue mpegaudioheader"
2974 libspeex_decoder_deps="libspeex"
2975 libspeex_encoder_deps="libspeex"
2976 libspeex_encoder_select="audio_frame_queue"
2977 libtheora_encoder_deps="libtheora"
2978 libtwolame_encoder_deps="libtwolame"
2979 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2980 libvorbis_decoder_deps="libvorbis"
2981 libvorbis_encoder_deps="libvorbis"
2982 libvorbis_encoder_select="audio_frame_queue"
2983 libvpx_vp8_decoder_deps="libvpx"
2984 libvpx_vp8_encoder_deps="libvpx"
2985 libvpx_vp9_decoder_deps="libvpx"
2986 libvpx_vp9_encoder_deps="libvpx"
2987 libwavpack_encoder_deps="libwavpack"
2988 libwavpack_encoder_select="audio_frame_queue"
2989 libwebp_encoder_deps="libwebp"
2990 libwebp_anim_encoder_deps="libwebp"
2991 libx262_encoder_deps="libx262"
2992 libx264_encoder_deps="libx264"
2993 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2994 libx264rgb_encoder_select="libx264_encoder"
2995 libx265_encoder_deps="libx265"
2996 libxavs_encoder_deps="libxavs"
2997 libxvid_encoder_deps="libxvid"
2998 libzvbi_teletext_decoder_deps="libzvbi"
2999 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
3000 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3001 videotoolbox_encoder_suggest="vda_framework"
3002
3003 # demuxers / muxers
3004 ac3_demuxer_select="ac3_parser"
3005 aiff_muxer_select="iso_media"
3006 asf_demuxer_select="riffdec"
3007 asf_o_demuxer_select="riffdec"
3008 asf_muxer_select="riffenc"
3009 asf_stream_muxer_select="asf_muxer"
3010 avi_demuxer_select="iso_media riffdec exif"
3011 avi_muxer_select="riffenc"
3012 caf_demuxer_select="iso_media riffdec"
3013 caf_muxer_select="iso_media"
3014 dash_muxer_select="mp4_muxer"
3015 dash_demuxer_deps="libxml2"
3016 dirac_demuxer_select="dirac_parser"
3017 dts_demuxer_select="dca_parser"
3018 dtshd_demuxer_select="dca_parser"
3019 dv_demuxer_select="dvprofile"
3020 dv_muxer_select="dvprofile"
3021 dxa_demuxer_select="riffdec"
3022 eac3_demuxer_select="ac3_parser"
3023 f4v_muxer_select="mov_muxer"
3024 fifo_muxer_deps="threads"
3025 flac_demuxer_select="flac_parser"
3026 hds_muxer_select="flv_muxer"
3027 hls_muxer_select="mpegts_muxer"
3028 image2_alias_pix_demuxer_select="image2_demuxer"
3029 image2_brender_pix_demuxer_select="image2_demuxer"
3030 ipod_muxer_select="mov_muxer"
3031 ismv_muxer_select="mov_muxer"
3032 matroska_audio_muxer_select="matroska_muxer"
3033 matroska_demuxer_select="iso_media riffdec"
3034 matroska_demuxer_suggest="bzlib lzo zlib"
3035 matroska_muxer_select="iso_media riffenc"
3036 mmf_muxer_select="riffenc"
3037 mov_demuxer_select="iso_media riffdec"
3038 mov_demuxer_suggest="zlib"
3039 mov_muxer_select="iso_media riffenc rtpenc_chain"
3040 mp3_demuxer_select="mpegaudio_parser"
3041 mp3_muxer_select="mpegaudioheader"
3042 mp4_muxer_select="mov_muxer"
3043 mpegts_demuxer_select="iso_media"
3044 mpegts_muxer_select="adts_muxer latm_muxer"
3045 mpegtsraw_demuxer_select="mpegts_demuxer"
3046 mxf_d10_muxer_select="mxf_muxer"
3047 mxf_opatom_muxer_select="mxf_muxer"
3048 nut_muxer_select="riffenc"
3049 nuv_demuxer_select="riffdec"
3050 oga_muxer_select="ogg_muxer"
3051 ogg_demuxer_select="dirac_parse"
3052 ogv_muxer_select="ogg_muxer"
3053 opus_muxer_select="ogg_muxer"
3054 psp_muxer_select="mov_muxer"
3055 rtp_demuxer_select="sdp_demuxer"
3056 rtp_muxer_select="golomb"
3057 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3058 rtsp_demuxer_select="http_protocol rtpdec"
3059 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3060 sap_demuxer_select="sdp_demuxer"
3061 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3062 sdp_demuxer_select="rtpdec"
3063 smoothstreaming_muxer_select="ismv_muxer"
3064 spdif_muxer_select="aac_parser"
3065 spx_muxer_select="ogg_muxer"
3066 swf_demuxer_suggest="zlib"
3067 tak_demuxer_select="tak_parser"
3068 tg2_muxer_select="mov_muxer"
3069 tgp_muxer_select="mov_muxer"
3070 vobsub_demuxer_select="mpegps_demuxer"
3071 w64_demuxer_select="wav_demuxer"
3072 w64_muxer_select="wav_muxer"
3073 wav_demuxer_select="riffdec"
3074 wav_muxer_select="riffenc"
3075 webm_muxer_select="iso_media riffenc"
3076 webm_dash_manifest_demuxer_select="matroska_demuxer"
3077 wtv_demuxer_select="mpegts_demuxer riffdec"
3078 wtv_muxer_select="mpegts_muxer riffenc"
3079 xmv_demuxer_select="riffdec"
3080 xwma_demuxer_select="riffdec"
3081
3082 # indevs / outdevs
3083 alsa_indev_deps="alsa"
3084 alsa_outdev_deps="alsa"
3085 avfoundation_indev_deps="avfoundation pthreads"
3086 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3087 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3088 caca_outdev_deps="libcaca"
3089 decklink_deps_any="libdl LoadLibrary"
3090 decklink_indev_deps="decklink threads"
3091 decklink_indev_extralibs="-lstdc++"
3092 decklink_outdev_deps="decklink threads"
3093 decklink_outdev_extralibs="-lstdc++"
3094 libndi_newtek_indev_deps="libndi_newtek"
3095 libndi_newtek_indev_extralibs="-lndi"
3096 libndi_newtek_outdev_deps="libndi_newtek"
3097 libndi_newtek_outdev_extralibs="-lndi"
3098 dshow_indev_deps="IBaseFilter"
3099 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3100 fbdev_indev_deps="linux_fb_h"
3101 fbdev_outdev_deps="linux_fb_h"
3102 gdigrab_indev_deps="CreateDIBSection"
3103 gdigrab_indev_extralibs="-lgdi32"
3104 gdigrab_indev_select="bmp_decoder"
3105 iec61883_indev_deps="libiec61883"
3106 jack_indev_deps="jack"
3107 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3108 kmsgrab_indev_deps="libdrm"
3109 lavfi_indev_deps="avfilter"
3110 libcdio_indev_deps="libcdio"
3111 libdc1394_indev_deps="libdc1394"
3112 libv4l2_indev_deps="libv4l2"
3113 openal_indev_deps="openal"
3114 opengl_outdev_deps="opengl"
3115 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3116 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3117 pulse_indev_deps="libpulse"
3118 pulse_outdev_deps="libpulse"
3119 sdl2_outdev_deps="sdl2"
3120 sndio_indev_deps="sndio"
3121 sndio_outdev_deps="sndio"
3122 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3123 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3124 vfwcap_indev_deps="vfw32 vfwcap_defines"
3125 xcbgrab_indev_deps="libxcb"
3126 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3127 xv_outdev_extralibs="-lXv -lX11 -lXext"
3128
3129 # protocols
3130 async_protocol_deps="threads"
3131 bluray_protocol_deps="libbluray"
3132 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3133 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3134 ffrtmpcrypt_protocol_select="tcp_protocol"
3135 ffrtmphttp_protocol_conflict="librtmp_protocol"
3136 ffrtmphttp_protocol_select="http_protocol"
3137 ftp_protocol_select="tcp_protocol"
3138 gopher_protocol_select="network"
3139 http_protocol_select="tcp_protocol"
3140 httpproxy_protocol_select="tcp_protocol"
3141 https_protocol_select="tls_protocol"
3142 icecast_protocol_select="http_protocol"
3143 librtmp_protocol_deps="librtmp"
3144 librtmpe_protocol_deps="librtmp"
3145 librtmps_protocol_deps="librtmp"
3146 librtmpt_protocol_deps="librtmp"
3147 librtmpte_protocol_deps="librtmp"
3148 libsmbclient_protocol_deps="libsmbclient gplv3"
3149 libssh_protocol_deps="libssh"
3150 mmsh_protocol_select="http_protocol"
3151 mmst_protocol_select="network"
3152 rtmp_protocol_conflict="librtmp_protocol"
3153 rtmp_protocol_select="tcp_protocol"
3154 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3155 rtmps_protocol_conflict="librtmp_protocol"
3156 rtmps_protocol_select="tls_protocol"
3157 rtmpt_protocol_select="ffrtmphttp_protocol"
3158 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3159 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3160 rtp_protocol_select="udp_protocol"
3161 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3162 sctp_protocol_select="network"
3163 srtp_protocol_select="rtp_protocol srtp"
3164 tcp_protocol_select="network"
3165 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3166 tls_gnutls_protocol_deps="gnutls"
3167 tls_gnutls_protocol_select="tcp_protocol"
3168 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3169 tls_openssl_protocol_deps="openssl"
3170 tls_openssl_protocol_select="tcp_protocol"
3171 tls_schannel_protocol_deps="schannel"
3172 tls_schannel_protocol_select="tcp_protocol"
3173 tls_securetransport_protocol_deps="securetransport"
3174 tls_securetransport_protocol_select="tcp_protocol"
3175 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3176 udp_protocol_select="network"
3177 udplite_protocol_select="network"
3178 unix_protocol_deps="sys_un_h"
3179 unix_protocol_select="network"
3180
3181 # filters
3182 afftfilt_filter_deps="avcodec"
3183 afftfilt_filter_select="fft"
3184 afir_filter_deps="avcodec"
3185 afir_filter_select="fft"
3186 amovie_filter_deps="avcodec avformat"
3187 aresample_filter_deps="swresample"
3188 ass_filter_deps="libass"
3189 atempo_filter_deps="avcodec"
3190 atempo_filter_select="rdft"
3191 azmq_filter_deps="libzmq"
3192 blackframe_filter_deps="gpl"
3193 boxblur_filter_deps="gpl"
3194 bs2b_filter_deps="libbs2b"
3195 colormatrix_filter_deps="gpl"
3196 coreimage_filter_deps="coreimage appkit"
3197 coreimage_filter_extralibs="-framework OpenGL"
3198 coreimagesrc_filter_deps="coreimage appkit"
3199 coreimagesrc_filter_extralibs="-framework OpenGL"
3200 cover_rect_filter_deps="avcodec avformat gpl"
3201 cropdetect_filter_deps="gpl"
3202 deinterlace_qsv_filter_deps="libmfx"
3203 deinterlace_vaapi_filter_deps="vaapi"
3204 delogo_filter_deps="gpl"
3205 deshake_filter_select="pixelutils"
3206 drawtext_filter_deps="libfreetype"
3207 elbg_filter_deps="avcodec"
3208 eq_filter_deps="gpl"
3209 fftfilt_filter_deps="avcodec"
3210 fftfilt_filter_select="rdft"
3211 find_rect_filter_deps="avcodec avformat gpl"
3212 firequalizer_filter_deps="avcodec"
3213 firequalizer_filter_select="rdft"
3214 flite_filter_deps="libflite"
3215 framerate_filter_select="pixelutils"
3216 frei0r_filter_deps="frei0r libdl"
3217 frei0r_src_filter_deps="frei0r libdl"
3218 fspp_filter_deps="gpl"
3219 geq_filter_deps="gpl"
3220 histeq_filter_deps="gpl"
3221 hqdn3d_filter_deps="gpl"
3222 interlace_filter_deps="gpl"
3223 kerndeint_filter_deps="gpl"
3224 ladspa_filter_deps="ladspa libdl"
3225 mcdeint_filter_deps="avcodec gpl"
3226 movie_filter_deps="avcodec avformat"
3227 mpdecimate_filter_deps="gpl"
3228 mpdecimate_filter_select="pixelutils"
3229 mptestsrc_filter_deps="gpl"
3230 negate_filter_deps="lut_filter"
3231 nnedi_filter_deps="gpl"
3232 ocr_filter_deps="libtesseract"
3233 ocv_filter_deps="libopencv"
3234 owdenoise_filter_deps="gpl"
3235 pan_filter_deps="swresample"
3236 perspective_filter_deps="gpl"
3237 phase_filter_deps="gpl"
3238 pp7_filter_deps="gpl"
3239 pp_filter_deps="gpl postproc"
3240 pullup_filter_deps="gpl"
3241 removelogo_filter_deps="avcodec avformat swscale"
3242 repeatfields_filter_deps="gpl"
3243 resample_filter_deps="avresample"
3244 rubberband_filter_deps="librubberband"
3245 sab_filter_deps="gpl swscale"
3246 scale2ref_filter_deps="swscale"
3247 scale_filter_deps="swscale"
3248 scale_qsv_filter_deps="libmfx"
3249 select_filter_select="pixelutils"
3250 showcqt_filter_deps="avcodec avformat swscale"
3251 showcqt_filter_select="fft"
3252 showfreqs_filter_deps="avcodec"
3253 showfreqs_filter_select="fft"
3254 showspectrum_filter_deps="avcodec"
3255 showspectrum_filter_select="fft"
3256 showspectrumpic_filter_deps="avcodec"
3257 showspectrumpic_filter_select="fft"
3258 signature_filter_deps="gpl avcodec avformat"
3259 smartblur_filter_deps="gpl swscale"
3260 sofalizer_filter_deps="libmysofa avcodec"
3261 sofalizer_filter_select="fft"
3262 spectrumsynth_filter_deps="avcodec"
3263 spectrumsynth_filter_select="fft"
3264 spp_filter_deps="gpl avcodec"
3265 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3266 stereo3d_filter_deps="gpl"
3267 subtitles_filter_deps="avformat avcodec libass"
3268 super2xsai_filter_deps="gpl"
3269 pixfmts_super2xsai_test_deps="super2xsai_filter"
3270 tinterlace_filter_deps="gpl"
3271 tinterlace_merge_test_deps="tinterlace_filter"
3272 tinterlace_pad_test_deps="tinterlace_filter"
3273 tonemap_filter_deps="const_nan"
3274 uspp_filter_deps="gpl avcodec"
3275 vaguedenoiser_filter_deps="gpl"
3276 vidstabdetect_filter_deps="libvidstab"
3277 vidstabtransform_filter_deps="libvidstab"
3278 libvmaf_filter_deps="libvmaf"
3279 zmq_filter_deps="libzmq"
3280 zoompan_filter_deps="swscale"
3281 zscale_filter_deps="libzimg const_nan"
3282 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3283
3284 # examples
3285 avio_dir_cmd_deps="avformat avutil"
3286 avio_reading_deps="avformat avcodec avutil"
3287 decode_audio_example_deps="avcodec avutil"
3288 decode_video_example_deps="avcodec avutil"
3289 demuxing_decoding_example_deps="avcodec avformat avutil"
3290 encode_audio_example_deps="avcodec avutil"
3291 encode_video_example_deps="avcodec avutil"
3292 extract_mvs_example_deps="avcodec avformat avutil"
3293 filter_audio_example_deps="avfilter avutil"
3294 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3295 filtering_video_example_deps="avfilter avcodec avformat avutil"
3296 http_multiclient_example_deps="avformat avutil fork"
3297 hw_decode_example_deps="avcodec avformat avutil"
3298 metadata_example_deps="avformat avutil"
3299 muxing_example_deps="avcodec avformat avutil swscale"
3300 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3301 remuxing_example_deps="avcodec avformat avutil"
3302 resampling_audio_example_deps="avutil swresample"
3303 scaling_video_example_deps="avutil swscale"
3304 transcode_aac_example_deps="avcodec avformat swresample"
3305 transcoding_example_deps="avfilter avcodec avformat avutil"
3306
3307 # libraries, in linking order
3308 avcodec_deps="avutil"
3309 avcodec_select="null_bsf"
3310 avdevice_deps="avformat avcodec avutil"
3311 avfilter_deps="avutil"
3312 avformat_deps="avcodec avutil"
3313 avformat_suggest="network"
3314 avresample_deps="avutil"
3315 postproc_deps="avutil gpl"
3316 swresample_deps="avutil"
3317 swscale_deps="avutil"
3318
3319 # programs
3320 ffmpeg_deps="avcodec avfilter avformat swresample"
3321 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3322                null_filter
3323                trim_filter"
3324 ffplay_deps="avcodec avformat swscale swresample sdl2"
3325 ffplay_extralibs='$sdl2_extralibs'
3326 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3327 ffprobe_deps="avcodec avformat"
3328 ffserver_deps="avformat fork sarestart"
3329 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3330
3331 # documentation
3332 podpages_deps="perl"
3333 manpages_deps="perl pod2man"
3334 htmlpages_deps="perl"
3335 htmlpages_deps_any="makeinfo_html texi2html"
3336 txtpages_deps="perl makeinfo"
3337 doc_deps_any="manpages htmlpages podpages txtpages"
3338
3339 # default parameters
3340
3341 logfile="ffbuild/config.log"
3342
3343 # installation paths
3344 prefix_default="/usr/local"
3345 bindir_default='${prefix}/bin'
3346 datadir_default='${prefix}/share/ffmpeg'
3347 docdir_default='${prefix}/share/doc/ffmpeg'
3348 incdir_default='${prefix}/include'
3349 libdir_default='${prefix}/lib'
3350 mandir_default='${prefix}/share/man'
3351
3352 # toolchain
3353 ar_default="ar"
3354 cc_default="gcc"
3355 cxx_default="g++"
3356 host_cc_default="gcc"
3357 doxygen_default="doxygen"
3358 install="install"
3359 ln_s_default="ln -s -f"
3360 nm_default="nm -g"
3361 pkg_config_default=pkg-config
3362 ranlib_default="ranlib"
3363 strip_default="strip"
3364 version_script='--version-script'
3365 x86asmexe_default="nasm"
3366 windres_default="windres"
3367 nvcc_default="nvcc"
3368 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3369 striptype="direct"
3370
3371 # OS
3372 target_os_default=$(tolower $(uname -s))
3373 host_os=$target_os_default
3374
3375 # machine
3376 if test "$target_os_default" = aix; then
3377     arch_default=$(uname -p)
3378     strip_default="strip -X32_64"
3379 else
3380     arch_default=$(uname -m)
3381 fi
3382 cpu="generic"
3383 intrinsics="none"
3384
3385 # configurable options
3386 enable $PROGRAM_LIST
3387 enable $DOCUMENT_LIST
3388 enable $EXAMPLE_LIST
3389 enable $(filter_out avresample $LIBRARY_LIST)
3390 enable stripping
3391
3392 enable asm
3393 enable debug
3394 enable doc
3395 enable faan faandct faanidct
3396 enable optimizations
3397 enable runtime_cpudetect
3398 enable safe_bitstream_reader
3399 enable static
3400 enable swscale_alpha
3401 enable valgrind_backtrace
3402
3403 sws_max_filter_size_default=256
3404 set_default sws_max_filter_size
3405
3406 # build settings
3407 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3408 LIBPREF="lib"
3409 LIBSUF=".a"
3410 FULLNAME='$(NAME)$(BUILDSUF)'
3411 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3412 SLIBPREF="lib"
3413 SLIBSUF=".so"
3414 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3415 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3416 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3417 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3418 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3419 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3420 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3421
3422 asflags_filter=echo
3423 cflags_filter=echo
3424 ldflags_filter=echo
3425
3426 AS_C='-c'
3427 AS_O='-o $@'
3428 CC_C='-c'
3429 CC_E='-E -o $@'
3430 CC_O='-o $@'
3431 CXX_C='-c'
3432 CXX_O='-o $@'
3433 OBJCC_C='-c'
3434 OBJCC_E='-E -o $@'
3435 OBJCC_O='-o $@'
3436 X86ASM_O='-o $@'
3437 LD_O='-o $@'
3438 LD_LIB='-l%'
3439 LD_PATH='-L'
3440 HOSTCC_C='-c'
3441 HOSTCC_E='-E -o $@'
3442 HOSTCC_O='-o $@'
3443 HOSTLD_O='-o $@'
3444 NVCC_C='-c'
3445 NVCC_O='-o $@'
3446
3447 host_extralibs='-lm'
3448 host_cflags_filter=echo
3449 host_ldflags_filter=echo
3450
3451 target_path='$(CURDIR)'
3452
3453 # since the object filename is not given with the -MM flag, the compiler
3454 # is only able to print the basename, and we must add the path ourselves
3455 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3456 DEPFLAGS='-MM'
3457
3458 mkdir -p ffbuild
3459
3460 # find source path
3461 if test -f configure; then
3462     source_path=.
3463 else
3464     source_path=$(cd $(dirname "$0"); pwd)
3465     case "$source_path" in
3466         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3467     esac
3468     test -e "$source_path/config.h" &&
3469         die "Out of tree builds are impossible with config.h in source dir."
3470 fi
3471
3472 for v in "$@"; do
3473     r=${v#*=}
3474     l=${v%"$r"}
3475     r=$(sh_quote "$r")
3476     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3477 done
3478
3479 find_things(){
3480     thing=$1
3481     pattern=$2
3482     file=$source_path/$3
3483     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3484 }
3485
3486 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3487 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3488 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3489 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3490 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3491 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3492 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3493 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3494 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3495
3496 find_things_extern(){
3497     thing=$1
3498     pattern=$2
3499     file=$source_path/$3
3500     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3501 }
3502
3503 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3504 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3505
3506 ALL_COMPONENTS="
3507     $BSF_LIST
3508     $DECODER_LIST
3509     $DEMUXER_LIST
3510     $ENCODER_LIST
3511     $FILTER_LIST
3512     $HWACCEL_LIST
3513     $INDEV_LIST
3514     $MUXER_LIST
3515     $OUTDEV_LIST
3516     $PARSER_LIST
3517     $PROTOCOL_LIST
3518 "
3519
3520 for n in $COMPONENT_LIST; do
3521     v=$(toupper ${n%s})_LIST
3522     eval enable \$$v
3523     eval ${n}_if_any="\$$v"
3524 done
3525
3526 enable $ARCH_EXT_LIST
3527
3528 die_unknown(){
3529     echo "Unknown option \"$1\"."
3530     echo "See $0 --help for available options."
3531     exit 1
3532 }
3533
3534 print_in_columns() {
3535     cols=$(expr $ncols / 24)
3536     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3537 }
3538
3539 show_list() {
3540     suffix=_$1
3541     shift
3542     echo $* | sed s/$suffix//g | print_in_columns
3543     exit 0
3544 }
3545
3546 rand_list(){
3547     IFS=', '
3548     set -- $*
3549     unset IFS
3550     for thing; do
3551         comp=${thing%:*}
3552         prob=${thing#$comp}
3553         prob=${prob#:}
3554         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3555         echo "prob ${prob:-0.5}"
3556         printf '%s\n' $comp
3557     done
3558 }
3559
3560 do_random(){
3561     action=$1
3562     shift
3563     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3564     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3565 }
3566
3567 for opt do
3568     optval="${opt#*=}"
3569     case "$opt" in
3570         --extra-ldflags=*)
3571             add_ldflags $optval
3572         ;;
3573         --extra-ldexeflags=*)
3574             add_ldexeflags $optval
3575         ;;
3576         --extra-ldlibflags=*)
3577             add_ldlibflags $optval
3578         ;;
3579         --extra-libs=*)
3580             add_extralibs $optval
3581         ;;
3582         --disable-devices)
3583             disable $INDEV_LIST $OUTDEV_LIST
3584         ;;
3585         --enable-debug=*)
3586             debuglevel="$optval"
3587         ;;
3588         --disable-programs)
3589             disable $PROGRAM_LIST
3590         ;;
3591         --disable-everything)
3592             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3593         ;;
3594         --disable-all)
3595             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3596             disable $LIBRARY_LIST $PROGRAM_LIST doc
3597             enable avutil
3598         ;;
3599         --enable-random|--disable-random)
3600             action=${opt%%-random}
3601             do_random ${action#--} $COMPONENT_LIST
3602         ;;
3603         --enable-random=*|--disable-random=*)
3604             action=${opt%%-random=*}
3605             do_random ${action#--} $optval
3606         ;;
3607         --enable-sdl)
3608             enable sdl2
3609         ;;
3610         --enable-*=*|--disable-*=*)
3611             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3612             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3613             eval list=\$$(toupper $thing)_LIST
3614             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3615             list=$(filter "$name" $list)
3616             [ "$list" = "" ] && warn "Option $opt did not match anything"
3617             $action $list
3618         ;;
3619         --enable-yasm|--disable-yasm)
3620             warn "The ${opt} option is only provided for compatibility and will be\n"\
3621                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3622             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3623         ;;
3624         --yasmexe=*)
3625             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3626                  "removed in the future. Use --x86asmexe instead."
3627             x86asmexe="$optval"
3628         ;;
3629         --enable-?*|--disable-?*)
3630             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3631             if is_in $option $COMPONENT_LIST; then
3632                 test $action = disable && action=unset
3633                 eval $action \$$(toupper ${option%s})_LIST
3634             elif is_in $option $CMDLINE_SELECT; then
3635                 $action $option
3636             else
3637                 die_unknown $opt
3638             fi
3639         ;;
3640         --list-*)
3641             NAME="${opt#--list-}"
3642             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3643             NAME=${NAME%s}
3644             eval show_list $NAME \$$(toupper $NAME)_LIST
3645         ;;
3646         --help|-h) show_help
3647         ;;
3648         --quiet|-q) quiet=yes
3649         ;;
3650         --fatal-warnings) enable fatal_warnings
3651         ;;
3652         --libfuzzer=*)
3653             libfuzzer_path="$optval"
3654         ;;
3655         *)
3656             optname="${opt%%=*}"
3657             optname="${optname#--}"
3658             optname=$(echo "$optname" | sed 's/-/_/g')
3659             if is_in $optname $CMDLINE_SET; then
3660                 eval $optname='$optval'
3661             elif is_in $optname $CMDLINE_APPEND; then
3662                 append $optname "$optval"
3663             else
3664                 die_unknown $opt
3665             fi
3666         ;;
3667     esac
3668 done
3669
3670 for e in $env; do
3671     eval "export $e"
3672 done
3673
3674 if disabled autodetect; then
3675
3676     # Unless iconv is explicitely disabled by the user, we still want to probe
3677     # for the iconv from the libc.
3678     disabled iconv || enable libc_iconv
3679
3680     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3681     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3682 fi
3683 # Mark specifically enabled, but normally autodetected libraries as requested.
3684 for lib in $AUTODETECT_LIBS; do
3685     enabled $lib && request $lib
3686 done
3687 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3688 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3689 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3690
3691 disabled logging && logfile=/dev/null
3692
3693 die_license_disabled() {
3694     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3695 }
3696
3697 die_license_disabled_gpl() {
3698     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3699 }
3700
3701 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3702 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3703
3704 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3705 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3706
3707 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3708
3709 # Disable all the library-specific components if the library itself
3710 # is disabled, see AVCODEC_LIST and following _LIST variables.
3711
3712 disable_components(){
3713     disabled ${1} && disable $(
3714         eval components="\$$(toupper ${1})_COMPONENTS"
3715         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3716     )
3717 }
3718
3719 map 'disable_components $v' $LIBRARY_LIST
3720
3721 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3722 set >> $logfile
3723
3724 test -n "$valgrind" && toolchain="valgrind-memcheck"
3725
3726 enabled ossfuzz && {
3727     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3728     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3729 }
3730
3731 case "$toolchain" in
3732     *-asan)
3733         cc_default="${toolchain%-asan}"
3734         add_cflags  -fsanitize=address
3735         add_ldflags -fsanitize=address
3736     ;;
3737     *-msan)
3738         cc_default="${toolchain%-msan}"
3739         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3740         add_ldflags -fsanitize=memory
3741     ;;
3742     *-tsan)
3743         cc_default="${toolchain%-tsan}"
3744         add_cflags  -fsanitize=thread -fPIE
3745         add_ldflags -fsanitize=thread -pie
3746         case "$toolchain" in
3747             gcc-tsan)
3748                 add_cflags  -fPIC
3749                 add_ldflags -fPIC
3750                 ;;
3751         esac
3752     ;;
3753     *-usan)
3754         cc_default="${toolchain%-usan}"
3755         add_cflags  -fsanitize=undefined
3756         add_ldflags -fsanitize=undefined
3757     ;;
3758     valgrind-*)
3759         target_exec_default="valgrind"
3760         case "$toolchain" in
3761             valgrind-massif)
3762                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3763                 ;;
3764             valgrind-memcheck)
3765                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3766                 ;;
3767         esac
3768     ;;
3769     msvc)
3770         # Check whether the current MSVC version needs the C99 converter.
3771         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3772         # support enough of C99 to build ffmpeg. Default to the new
3773         # behaviour if the regexp was unable to match anything, since this
3774         # successfully parses the version number of existing supported
3775         # versions that require the converter (MSVC 2010 and 2012).
3776         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3777         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3778             cc_default="cl"
3779             cxx_default="cl"
3780         else
3781             cc_default="c99wrap cl"
3782             cxx_default="c99wrap cl"
3783         fi
3784         ld_default="$source_path/compat/windows/mslink"
3785         nm_default="dumpbin -symbols"
3786         ar_default="lib"
3787         case "$arch" in
3788         arm*)
3789             as_default="armasm"
3790             ;;
3791         esac
3792         target_os_default="win32"
3793         # Use a relative path for TMPDIR. This makes sure all the
3794         # ffconf temp files are written with a relative path, avoiding
3795         # issues with msys/win32 path conversion for MSVC parameters
3796         # such as -Fo<file> or -out:<file>.
3797         TMPDIR=.
3798     ;;
3799     icl)
3800         cc_default="icl"
3801         ld_default="xilink"
3802         nm_default="dumpbin -symbols"
3803         ar_default="xilib"
3804         target_os_default="win32"
3805         TMPDIR=.
3806     ;;
3807     gcov)
3808         add_cflags  -fprofile-arcs -ftest-coverage
3809         add_ldflags -fprofile-arcs -ftest-coverage
3810     ;;
3811     llvm-cov)
3812         add_cflags -fprofile-arcs -ftest-coverage
3813         add_ldflags --coverage
3814     ;;
3815     hardened)
3816         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3817         add_cflags   -fno-strict-overflow -fstack-protector-all
3818         add_ldflags  -Wl,-z,relro -Wl,-z,now
3819         add_cflags   -fPIE
3820         add_ldexeflags -fPIE -pie
3821     ;;
3822     ?*)
3823         die "Unknown toolchain $toolchain"
3824     ;;
3825 esac
3826
3827 test -n "$cross_prefix" && enable cross_compile
3828
3829 if enabled cross_compile; then
3830     test -n "$arch" && test -n "$target_os" ||
3831         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3832 fi
3833
3834 ar_default="${cross_prefix}${ar_default}"
3835 cc_default="${cross_prefix}${cc_default}"
3836 cxx_default="${cross_prefix}${cxx_default}"
3837 nm_default="${cross_prefix}${nm_default}"
3838 pkg_config_default="${cross_prefix}${pkg_config_default}"
3839 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3840     ranlib_default="${cross_prefix}${ranlib_default} -D"
3841 else
3842     ranlib_default="${cross_prefix}${ranlib_default}"
3843 fi
3844 strip_default="${cross_prefix}${strip_default}"
3845 windres_default="${cross_prefix}${windres_default}"
3846
3847 sysinclude_default="${sysroot}/usr/include"
3848
3849 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3850     target_exec target_os x86asmexe nvcc
3851 enabled cross_compile || host_cc_default=$cc
3852 set_default host_cc
3853
3854 pkg_config_fail_message=""
3855 if ! $pkg_config --version >/dev/null 2>&1; then
3856     warn "$pkg_config not found, library detection may fail."
3857     pkg_config=false
3858 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3859     pkg_config_fail_message="
3860 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3861 fi
3862
3863 if test $doxygen != $doxygen_default && \
3864   ! $doxygen --version >/dev/null 2>&1; then
3865     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3866 fi
3867
3868 exesuf() {
3869     case $1 in
3870         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3871     esac
3872 }
3873
3874 EXESUF=$(exesuf $target_os)
3875 HOSTEXESUF=$(exesuf $host_os)
3876
3877 # set temporary file name
3878 : ${TMPDIR:=$TEMPDIR}
3879 : ${TMPDIR:=$TMP}
3880 : ${TMPDIR:=/tmp}
3881
3882 if [ -n "$tempprefix" ] ; then
3883     mktemp(){
3884         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3885         echo "$tmpname"
3886         mkdir "$tmpname"
3887     }
3888 elif ! check_cmd mktemp -u XXXXXX; then
3889     # simple replacement for missing mktemp
3890     # NOT SAFE FOR GENERAL USE
3891     mktemp(){
3892         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3893         echo "$tmpname"
3894         mkdir "$tmpname"
3895     }
3896 fi
3897
3898 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3899     die "Unable to create temporary directory in $TMPDIR."
3900
3901 tmpfile(){
3902     tmp="${FFTMPDIR}/test"$2
3903     (set -C; exec > $tmp) 2> /dev/null ||
3904         die "Unable to create temporary file in $FFTMPDIR."
3905     eval $1=$tmp
3906 }
3907
3908 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3909 trap 'exit 2' INT
3910
3911 tmpfile TMPASM .asm
3912 tmpfile TMPC   .c
3913 tmpfile TMPCPP .cpp
3914 tmpfile TMPE   $EXESUF
3915 tmpfile TMPH   .h
3916 tmpfile TMPM   .m
3917 tmpfile TMPO   .o
3918 tmpfile TMPS   .S
3919 tmpfile TMPSH  .sh
3920 tmpfile TMPV   .ver
3921
3922 unset -f mktemp
3923
3924 chmod +x $TMPE
3925
3926 # make sure we can execute files in $TMPDIR
3927 cat > $TMPSH 2>> $logfile <<EOF
3928 #! /bin/sh
3929 EOF
3930 chmod +x $TMPSH >> $logfile 2>&1
3931 if ! $TMPSH >> $logfile 2>&1; then
3932     cat <<EOF
3933 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3934 variable to another directory and make sure that it is not mounted noexec.
3935 EOF
3936     die "Sanity test failed."
3937 fi
3938
3939 armasm_flags(){
3940     for flag; do
3941         case $flag in
3942             # Filter out MSVC cl.exe options from cflags that shouldn't
3943             # be passed to gas-preprocessor
3944             -M[TD]*)                                            ;;
3945             *)                  echo $flag                      ;;
3946         esac
3947    done
3948 }
3949
3950 ccc_flags(){
3951     for flag; do
3952         case $flag in
3953             -std=c99)           echo -c99                       ;;
3954             -mcpu=*)            echo -arch ${flag#*=}           ;;
3955             -mieee)             echo -ieee                      ;;
3956             -O*|-fast)          echo $flag                      ;;
3957             -fno-math-errno)    echo -assume nomath_errno       ;;
3958             -g)                 echo -g3                        ;;
3959             -Wall)              echo -msg_enable level2         ;;
3960             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3961             -Wl,*)              echo $flag                      ;;
3962             -f*|-W*)                                            ;;
3963             *)                  echo $flag                      ;;
3964         esac
3965    done
3966 }
3967
3968 cparser_flags(){
3969     for flag; do
3970         case $flag in
3971             -Wno-switch)             echo -Wno-switch-enum ;;
3972             -Wno-format-zero-length) ;;
3973             -Wdisabled-optimization) ;;
3974             -Wno-pointer-sign)       echo -Wno-other ;;
3975             *)                       echo $flag ;;
3976         esac
3977     done
3978 }
3979
3980 msvc_common_flags(){
3981     for flag; do
3982         case $flag in
3983             # In addition to specifying certain flags under the compiler
3984             # specific filters, they must be specified here as well or else the
3985             # generic catch all at the bottom will print the original flag.
3986             -Wall)                ;;
3987             -Wextra)              ;;
3988             -std=c99)             ;;
3989             # Common flags
3990             -fomit-frame-pointer) ;;
3991             -g)                   echo -Z7 ;;
3992             -fno-math-errno)      ;;
3993             -fno-common)          ;;
3994             -fno-signed-zeros)    ;;
3995             -fPIC)                ;;
3996             -mthumb)              ;;
3997             -march=*)             ;;
3998             -lz)                  echo zlib.lib ;;
3999             -lx264)               echo libx264.lib ;;
4000             -lstdc++)             ;;
4001             -l*)                  echo ${flag#-l}.lib ;;
4002             -LARGEADDRESSAWARE)   echo $flag ;;
4003             -L*)                  echo -libpath:${flag#-L} ;;
4004             *)                    echo $flag ;;
4005         esac
4006     done
4007 }
4008
4009 msvc_flags(){
4010     msvc_common_flags "$@"
4011     for flag; do
4012         case $flag in
4013             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4014                                        -wd4554 ;;
4015             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4016                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4017                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4018                                        -wd4307 \
4019                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4020         esac
4021     done
4022 }
4023
4024 icl_flags(){
4025     msvc_common_flags "$@"
4026     for flag; do
4027         case $flag in
4028             # Despite what Intel's documentation says -Wall, which is supported
4029             # on Windows, does enable remarks so disable them here.
4030             -Wall)                echo $flag -Qdiag-disable:remark ;;
4031             -std=c99)             echo -Qstd=c99 ;;
4032             -flto)                echo -ipo ;;
4033         esac
4034     done
4035 }
4036
4037 icc_flags(){
4038     for flag; do
4039         case $flag in
4040             -flto)                echo -ipo ;;
4041             *)                    echo $flag ;;
4042         esac
4043     done
4044 }
4045
4046 pgi_flags(){
4047     for flag; do
4048         case $flag in
4049             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4050             -fomit-frame-pointer) echo -Mnoframe ;;
4051             -g)                   echo -gopt ;;
4052             *)                    echo $flag ;;
4053         esac
4054     done
4055 }
4056
4057 suncc_flags(){
4058     for flag; do
4059         case $flag in
4060             -march=*|-mcpu=*)
4061                 case "${flag#*=}" in
4062                     native)                   echo -xtarget=native       ;;
4063                     v9|niagara)               echo -xarch=sparc          ;;
4064                     ultrasparc)               echo -xarch=sparcvis       ;;
4065                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4066                     i586|pentium)             echo -xchip=pentium        ;;
4067                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4068                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4069                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4070                     pentium4*)          echo -xtarget=pentium4           ;;
4071                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4072                     *-sse3)             echo -xarch=sse3                 ;;
4073                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4074                     bonnell)                   echo -xarch=ssse3         ;;
4075                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4076                     westmere)                  echo -xtarget=westmere    ;;
4077                     silvermont)                echo -xarch=sse4_2        ;;
4078                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4079                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4080                                                echo -xarch=avx           ;;
4081                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4082                     btver1)                    echo -xarch=amdsse4a      ;;
4083                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4084                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4085                     k8|opteron|athlon64|athlon-fx)
4086                                                echo -xarch=sse2a         ;;
4087                     athlon*)                   echo -xarch=pentium_proa  ;;
4088                 esac
4089                 ;;
4090             -std=c99)             echo -xc99              ;;
4091             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4092             -fPIC)                echo -KPIC -xcode=pic32 ;;
4093             -W*,*)                echo $flag              ;;
4094             -f*-*|-W*|-mimpure-text)                      ;;
4095             -shared)              echo -G                 ;;
4096             *)                    echo $flag              ;;
4097         esac
4098     done
4099 }
4100
4101 tms470_flags(){
4102     for flag; do
4103         case $flag in
4104             -march=*|-mcpu=*)
4105                 case "${flag#*=}" in
4106                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4107                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4108                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4109                     armv6*|arm11*)          echo -mv=6   ;;
4110                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4111                                             echo -mv=5e  ;;
4112                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4113                 esac
4114                 ;;
4115             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4116             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4117             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4118             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4119             -msoft-float)   echo --float_support=vfplib       ;;
4120             -O[0-3]|-mf=*)  echo $flag                        ;;
4121             -g)             echo -g -mn                       ;;
4122             -pds=*)         echo $flag                        ;;
4123             -D*|-I*)        echo $flag                        ;;
4124             --gcc|--abi=*)  echo $flag                        ;;
4125             -me)            echo $flag                        ;;
4126         esac
4127     done
4128 }
4129
4130 probe_cc(){
4131     pfx=$1
4132     _cc=$2
4133     first=$3
4134
4135     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4136     unset _ld_o _ldflags _ld_lib _ld_path
4137     unset _depflags _DEPCMD _DEPFLAGS
4138     _flags_filter=echo
4139
4140     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4141         true # no-op to avoid reading stdin in following checks
4142     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4143         _type=llvm_gcc
4144         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4145         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4146         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4147         _cflags_speed='-O3'
4148         _cflags_size='-Os'
4149     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4150         _type=gcc
4151         gcc_version=$($_cc --version | head -n1)
4152         gcc_basever=$($_cc -dumpversion)
4153         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4154         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4155         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4156         case $gcc_basever in
4157             2) ;;
4158             2.*) ;;
4159             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4160         esac
4161         if [ "$first" = true ]; then
4162             case $gcc_basever in
4163                 4.2*)
4164                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4165             esac
4166         fi
4167         _cflags_speed='-O3'
4168         _cflags_size='-Os'
4169     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4170         _type=icc
4171         _ident=$($_cc --version | head -n1)
4172         _depflags='-MMD'
4173         _cflags_speed='-O3'
4174         _cflags_size='-Os'
4175         _cflags_noopt='-O1'
4176         _flags_filter=icc_flags
4177     elif $_cc -v 2>&1 | grep -q xlc; then
4178         _type=xlc
4179         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4180         _cflags_speed='-O5'
4181         _cflags_size='-O5 -qcompact'
4182     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4183         _type=ccc
4184         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4185         _DEPFLAGS='-M'
4186         _cflags_speed='-fast'
4187         _cflags_size='-O1'
4188         _flags_filter=ccc_flags
4189     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4190         test -d "$sysroot" || die "No valid sysroot specified."
4191         _type=armcc
4192         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4193         armcc_conf="$PWD/armcc.conf"
4194         $_cc --arm_linux_configure                 \
4195              --arm_linux_config_file="$armcc_conf" \
4196              --configure_sysroot="$sysroot"        \
4197              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4198              die "Error creating armcc configuration file."
4199         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4200         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4201         as_default="${cross_prefix}gcc"
4202         _depflags='-MMD'
4203         _cflags_speed='-O3'
4204         _cflags_size='-Os'
4205     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4206         _type=tms470
4207         _ident=$($_cc -version | head -n1 | tr -s ' ')
4208         _flags='--gcc --abi=eabi -me'
4209         _cc_e='-ppl -fe=$@'
4210         _cc_o='-fe=$@'
4211         _depflags='-ppa -ppd=$(@:.o=.d)'
4212         _cflags_speed='-O3 -mf=5'
4213         _cflags_size='-O3 -mf=2'
4214         _flags_filter=tms470_flags
4215     elif $_cc -v 2>&1 | grep -q clang; then
4216         _type=clang
4217         _ident=$($_cc --version 2>/dev/null | head -n1)
4218         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4219         _cflags_speed='-O3'
4220         _cflags_size='-Oz'
4221     elif $_cc -V 2>&1 | grep -q Sun; then
4222         _type=suncc
4223         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4224         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4225         _DEPFLAGS='-xM1 -xc99'
4226         _ldflags='-std=c99'
4227         _cflags_speed='-O5'
4228         _cflags_size='-O5 -xspace'
4229         _flags_filter=suncc_flags
4230     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4231         _type=pathscale
4232         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4234         _cflags_speed='-O2'
4235         _cflags_size='-Os'
4236         _flags_filter='filter_out -Wdisabled-optimization'
4237     elif $_cc -v 2>&1 | grep -q Open64; then
4238         _type=open64
4239         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4241         _cflags_speed='-O2'
4242         _cflags_size='-Os'
4243         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4244     elif $_cc -V 2>&1 | grep -q Portland; then
4245         _type=pgi
4246         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4247         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4248         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4249         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4250         _cflags_noopt="-O"
4251         _flags_filter=pgi_flags
4252     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4253         _type=armasm
4254         _ident=$($_cc | head -n1)
4255         # 4509: "This form of conditional instruction is deprecated"
4256         _flags="-nologo -ignore 4509"
4257         _flags_filter=armasm_flags
4258     elif $_cc 2>&1 | grep -q Intel; then
4259         _type=icl
4260         _ident=$($_cc 2>&1 | head -n1)
4261         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4262         # Not only is O3 broken on 13.x+ but it is slower on all previous
4263         # versions (tested) as well.
4264         _cflags_speed="-O2"
4265         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4266         if $_cc 2>&1 | grep -q Linker; then
4267             _ld_o='-out:$@'
4268         else
4269             _ld_o='-Fe$@'
4270         fi
4271         _cc_o='-Fo$@'
4272         _cc_e='-P'
4273         _flags_filter=icl_flags
4274         _ld_lib='lib%.a'
4275         _ld_path='-libpath:'
4276         # -Qdiag-error to make icl error when seeing certain unknown arguments
4277         _flags='-nologo -Qdiag-error:4044,10157'
4278         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4279         # with MSVC which enables it by default.
4280         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4281         disable stripping
4282     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4283         # lld can emulate multiple different linkers; in ms link.exe mode,
4284         # the -? parameter gives the help output which contains an identifyable
4285         # string, while it gives an error in other modes.
4286         _type=lld-link
4287         # The link.exe mode doesn't have a switch for getting the version,
4288         # but we can force it back to gnu mode and get the version from there.
4289         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4290         _ld_o='-out:$@'
4291         _flags_filter=msvc_flags
4292         _ld_lib='lib%.a'
4293         _ld_path='-libpath:'
4294     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4295         _type=msvc
4296         _ident=$($_cc 2>&1 | head -n1)
4297         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4298         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4299         _cflags_speed="-O2"
4300         _cflags_size="-O1"
4301         _cflags_noopt="-O1"
4302         if $_cc -nologo- 2>&1 | grep -q Linker; then
4303             _ld_o='-out:$@'
4304         else
4305             _ld_o='-Fe$@'
4306         fi
4307         _cc_o='-Fo$@'
4308         _cc_e='-P -Fi$@'
4309         _flags_filter=msvc_flags
4310         _ld_lib='lib%.a'
4311         _ld_path='-libpath:'
4312         _flags='-nologo'
4313         disable stripping
4314     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4315         _type=cparser
4316         _ident=$($_cc --version | head -n1)
4317         _depflags='-MMD'
4318         _cflags_speed='-O4'
4319         _cflags_size='-O2'
4320         _flags_filter=cparser_flags
4321     fi
4322
4323     eval ${pfx}_type=\$_type
4324     eval ${pfx}_ident=\$_ident
4325 }
4326
4327 set_ccvars(){
4328     eval ${1}_C=\${_cc_c-\${${1}_C}}
4329     eval ${1}_E=\${_cc_e-\${${1}_E}}
4330     eval ${1}_O=\${_cc_o-\${${1}_O}}
4331
4332     if [ -n "$_depflags" ]; then
4333         eval ${1}_DEPFLAGS=\$_depflags
4334     else
4335         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4336         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4337         eval DEP${1}FLAGS=\$_flags
4338     fi
4339 }
4340
4341 probe_cc cc "$cc" "true"
4342 cflags_filter=$_flags_filter
4343 cflags_speed=$_cflags_speed
4344 cflags_size=$_cflags_size
4345 cflags_noopt=$_cflags_noopt
4346 add_cflags $_flags $_cflags
4347 cc_ldflags=$_ldflags
4348 set_ccvars CC
4349 set_ccvars CXX
4350
4351 probe_cc hostcc "$host_cc"
4352 host_cflags_filter=$_flags_filter
4353 host_cflags_speed=$_cflags_speed
4354 add_host_cflags  $_flags $_cflags
4355 set_ccvars HOSTCC
4356
4357 test -n "$cc_type" && enable $cc_type ||
4358     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4359
4360 : ${as_default:=$cc}
4361 : ${objcc_default:=$cc}
4362 : ${dep_cc_default:=$cc}
4363 : ${ld_default:=$cc}
4364 : ${host_ld_default:=$host_cc}
4365 set_default ar as objcc dep_cc ld ln_s host_ld windres
4366
4367 probe_cc as "$as"
4368 asflags_filter=$_flags_filter
4369 add_asflags $_flags $_cflags
4370 set_ccvars AS
4371
4372 probe_cc objcc "$objcc"
4373 objcflags_filter=$_flags_filter
4374 add_objcflags $_flags $_cflags
4375 set_ccvars OBJC
4376
4377 probe_cc ld "$ld"
4378 ldflags_filter=$_flags_filter
4379 add_ldflags $_flags $_ldflags
4380 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4381 LD_O=${_ld_o-$LD_O}
4382 LD_LIB=${_ld_lib-$LD_LIB}
4383 LD_PATH=${_ld_path-$LD_PATH}
4384
4385 probe_cc hostld "$host_ld"
4386 host_ldflags_filter=$_flags_filter
4387 add_host_ldflags $_flags $_ldflags
4388 HOSTLD_O=${_ld_o-$HOSTLD_O}
4389
4390 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4391     probe_cc depcc "$dep_cc"
4392     CCDEP=${_DEPCMD:-$DEPCMD}
4393     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4394     DEPCCFLAGS=$_flags
4395 fi
4396
4397 if $ar 2>&1 | grep -q Microsoft; then
4398     arflags="-nologo"
4399     ar_o='-out:$@'
4400 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4401     arflags="rq"
4402     ar_o='$@'
4403 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4404     arflags='-Xany -r -c'
4405     ar_o='$@'
4406 elif $ar 2>&1 | grep -q "\[D\] "; then
4407     arflags="rcD"
4408     ar_o='$@'
4409 else
4410     arflags="rc"
4411     ar_o='$@'
4412 fi
4413
4414 add_cflags $extra_cflags
4415 add_cxxflags $extra_cxxflags
4416 add_objcflags $extra_objcflags
4417 add_asflags $extra_cflags
4418
4419 if test -n "$sysroot"; then
4420     case "$cc_type" in
4421         gcc|llvm_gcc|clang)
4422             add_cppflags --sysroot="$sysroot"
4423             add_ldflags --sysroot="$sysroot"
4424 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4425             add_cppflags -isysroot "$sysroot"
4426             add_ldflags -isysroot "$sysroot"
4427         ;;
4428         tms470)
4429             add_cppflags -I"$sysinclude"
4430             add_ldflags  --sysroot="$sysroot"
4431         ;;
4432     esac
4433 fi
4434
4435 if test "$cpu" = host; then
4436     enabled cross_compile &&
4437         die "--cpu=host makes no sense when cross-compiling."
4438
4439     case "$cc_type" in
4440         gcc|llvm_gcc)
4441             check_native(){
4442                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4443                 sed -n "/cc1.*$1=/{
4444                             s/.*$1=\\([^ ]*\\).*/\\1/
4445                             p
4446                             q
4447                         }" $TMPE
4448             }
4449             cpu=$(check_native -march || check_native -mcpu)
4450         ;;
4451         clang)
4452             check_native(){
4453                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4454                 sed -n "/cc1.*-target-cpu /{
4455                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4456                             p
4457                             q
4458                         }" $TMPE
4459             }
4460             cpu=$(check_native -march)
4461         ;;
4462     esac
4463
4464     test "${cpu:-host}" = host &&
4465         die "--cpu=host not supported with compiler $cc"
4466 fi
4467
4468 # Deal with common $arch aliases
4469 case "$arch" in
4470     aarch64|arm64)
4471         arch="aarch64"
4472     ;;
4473     arm*|iPad*|iPhone*)
4474         arch="arm"
4475     ;;
4476     mips*|IP*)
4477         case "$arch" in
4478         *el)
4479             add_cppflags -EL
4480             add_ldflags -EL
4481         ;;
4482         *eb)
4483             add_cppflags -EB
4484             add_ldflags -EB
4485         ;;
4486         esac
4487         arch="mips"
4488     ;;
4489     parisc*|hppa*)
4490         arch="parisc"
4491     ;;
4492     "Power Macintosh"|ppc*|powerpc*)
4493         arch="ppc"
4494     ;;
4495     s390|s390x)
4496         arch="s390"
4497     ;;
4498     sh4|sh)
4499         arch="sh4"
4500     ;;
4501     sun4*|sparc*)
4502         arch="sparc"
4503     ;;
4504     tilegx|tile-gx)
4505         arch="tilegx"
4506     ;;
4507     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4508         arch="x86"
4509     ;;
4510 esac
4511
4512 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4513 enable $arch
4514
4515 # Add processor-specific flags
4516 if enabled aarch64; then
4517
4518     case $cpu in
4519         armv*)
4520             cpuflags="-march=$cpu"
4521         ;;
4522         *)
4523             cpuflags="-mcpu=$cpu"
4524         ;;
4525     esac
4526
4527 elif enabled alpha; then
4528
4529     cpuflags="-mcpu=$cpu"
4530
4531 elif enabled arm; then
4532
4533     check_arm_arch() {
4534         check_cpp_condition stddef.h \
4535             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4536             $cpuflags
4537     }
4538
4539     probe_arm_arch() {
4540         if   check_arm_arch 4;        then echo armv4
4541         elif check_arm_arch 4T;       then echo armv4t
4542         elif check_arm_arch 5;        then echo armv5
4543         elif check_arm_arch 5E;       then echo armv5e
4544         elif check_arm_arch 5T;       then echo armv5t
4545         elif check_arm_arch 5TE;      then echo armv5te
4546         elif check_arm_arch 5TEJ;     then echo armv5te
4547         elif check_arm_arch 6;        then echo armv6
4548         elif check_arm_arch 6J;       then echo armv6j
4549         elif check_arm_arch 6K;       then echo armv6k
4550         elif check_arm_arch 6Z;       then echo armv6z
4551         elif check_arm_arch 6ZK;      then echo armv6zk
4552         elif check_arm_arch 6T2;      then echo armv6t2
4553         elif check_arm_arch 7;        then echo armv7
4554         elif check_arm_arch 7A  7_A;  then echo armv7-a
4555         elif check_arm_arch 7S;       then echo armv7-a
4556         elif check_arm_arch 7R  7_R;  then echo armv7-r
4557         elif check_arm_arch 7M  7_M;  then echo armv7-m
4558         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4559         elif check_arm_arch 8A  8_A;  then echo armv8-a
4560         fi
4561     }
4562
4563     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4564
4565     case $cpu in
4566         armv*)
4567             cpuflags="-march=$cpu"
4568             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4569         ;;
4570         *)
4571             cpuflags="-mcpu=$cpu"
4572             case $cpu in
4573                 cortex-a*)                               subarch=armv7a  ;;
4574                 cortex-r*)                               subarch=armv7r  ;;
4575                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4576                 arm11*)                                  subarch=armv6   ;;
4577                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4578                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4579                 *)                             subarch=$(probe_arm_arch) ;;
4580             esac
4581         ;;
4582     esac
4583
4584     case "$subarch" in
4585         armv5t*)    enable fast_clz                ;;
4586         armv[6-8]*)
4587             enable fast_clz
4588             disabled fast_unaligned || enable fast_unaligned
4589             ;;
4590     esac
4591
4592 elif enabled avr32; then
4593
4594     case $cpu in
4595         ap7[02]0[0-2])
4596             subarch="avr32_ap"
4597             cpuflags="-mpart=$cpu"
4598         ;;
4599         ap)
4600             subarch="avr32_ap"
4601             cpuflags="-march=$cpu"
4602         ;;
4603         uc3[ab]*)
4604             subarch="avr32_uc"
4605             cpuflags="-mcpu=$cpu"
4606         ;;
4607         uc)
4608             subarch="avr32_uc"
4609             cpuflags="-march=$cpu"
4610         ;;
4611     esac
4612
4613 elif enabled bfin; then
4614
4615     cpuflags="-mcpu=$cpu"
4616
4617 elif enabled mips; then
4618
4619     cpuflags="-march=$cpu"
4620
4621     if [ "$cpu" != "generic" ]; then
4622         disable mips32r2
4623         disable mips32r5
4624         disable mips64r2
4625         disable mips32r6
4626         disable mips64r6
4627         disable loongson2
4628         disable loongson3
4629
4630         case $cpu in
4631             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4632                 enable mips32r2
4633                 disable msa
4634             ;;
4635             p5600|i6400|p6600)
4636                 disable mipsdsp
4637                 disable mipsdspr2
4638             ;;
4639             loongson*)
4640                 enable loongson2
4641                 enable loongson3
4642                 enable local_aligned_8 local_aligned_16 local_aligned_32
4643                 enable simd_align_16
4644                 enable fast_64bit
4645                 enable fast_clz
4646                 enable fast_cmov
4647                 enable fast_unaligned
4648                 disable aligned_stack
4649                 disable mipsfpu
4650                 disable mipsdsp
4651                 disable mipsdspr2
4652                 case $cpu in
4653                     loongson3*)
4654                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4655                     ;;
4656                     loongson2e)
4657                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4658                     ;;
4659                     loongson2f)
4660                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4661                     ;;
4662                 esac
4663             ;;
4664             *)
4665                 # Unknown CPU. Disable everything.
4666                 warn "unknown CPU. Disabling all MIPS optimizations."
4667                 disable mipsfpu
4668                 disable mipsdsp
4669                 disable mipsdspr2
4670                 disable msa
4671                 disable mmi
4672             ;;
4673         esac
4674
4675         case $cpu in
4676             24kc)
4677                 disable mipsfpu
4678                 disable mipsdsp
4679                 disable mipsdspr2
4680             ;;
4681             24kf*)
4682                 disable mipsdsp
4683                 disable mipsdspr2
4684             ;;
4685             24kec|34kc|1004kc)
4686                 disable mipsfpu
4687                 disable mipsdspr2
4688             ;;
4689             24kef*|34kf*|1004kf*)
4690                 disable mipsdspr2
4691             ;;
4692             74kc)
4693                 disable mipsfpu
4694             ;;
4695             p5600)
4696                 enable mips32r5
4697                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4698             ;;
4699             i6400)
4700                 enable mips64r6
4701                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4702             ;;
4703             p6600)
4704                 enable mips64r6
4705                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4706             ;;
4707         esac
4708     else
4709         # We do not disable anything. Is up to the user to disable the unwanted features.
4710         warn 'generic cpu selected'
4711     fi
4712
4713 elif enabled ppc; then
4714
4715     disable ldbrx
4716
4717     case $(tolower $cpu) in
4718         601|ppc601|powerpc601)
4719             cpuflags="-mcpu=601"
4720             disable altivec
4721         ;;
4722         603*|ppc603*|powerpc603*)
4723             cpuflags="-mcpu=603"
4724             disable altivec
4725         ;;
4726         604*|ppc604*|powerpc604*)
4727             cpuflags="-mcpu=604"
4728             disable altivec
4729         ;;
4730         g3|75*|ppc75*|powerpc75*)
4731             cpuflags="-mcpu=750"
4732             disable altivec
4733         ;;
4734         g4|745*|ppc745*|powerpc745*)
4735             cpuflags="-mcpu=7450"
4736             disable vsx
4737         ;;
4738         74*|ppc74*|powerpc74*)
4739             cpuflags="-mcpu=7400"
4740             disable vsx
4741         ;;
4742         g5|970|ppc970|powerpc970)
4743             cpuflags="-mcpu=970"
4744             disable vsx
4745         ;;
4746         power[3-6]*)
4747             cpuflags="-mcpu=$cpu"
4748             disable vsx
4749         ;;
4750         power[7-8]*)
4751             cpuflags="-mcpu=$cpu"
4752         ;;
4753         cell)
4754             cpuflags="-mcpu=cell"
4755             enable ldbrx
4756             disable vsx
4757         ;;
4758         e500mc)
4759             cpuflags="-mcpu=e500mc"
4760             disable altivec
4761         ;;
4762         e500v2)
4763             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4764             disable altivec
4765             disable dcbzl
4766         ;;
4767         e500)
4768             cpuflags="-mcpu=8540 -mhard-float"
4769             disable altivec
4770             disable dcbzl
4771         ;;
4772     esac
4773
4774 elif enabled sparc; then
4775
4776     case $cpu in
4777         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4778             cpuflags="-mcpu=$cpu"
4779         ;;
4780         ultrasparc*|niagara[234])
4781             cpuflags="-mcpu=$cpu"
4782         ;;
4783     esac
4784
4785 elif enabled x86; then
4786
4787     case $cpu in
4788         i[345]86|pentium)
4789             cpuflags="-march=$cpu"
4790             disable i686
4791             disable mmx
4792         ;;
4793         # targets that do NOT support nopl and conditional mov (cmov)
4794         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4795             cpuflags="-march=$cpu"
4796             disable i686
4797         ;;
4798         # targets that do support nopl and conditional mov (cmov)
4799         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4800         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4801         |amdfam10|barcelona|b[dt]ver*|znver*)
4802             cpuflags="-march=$cpu"
4803             enable i686
4804             enable fast_cmov
4805         ;;
4806         # targets that do support conditional mov but on which it's slow
4807         pentium4|pentium4m|prescott|nocona)
4808             cpuflags="-march=$cpu"
4809             enable i686
4810             disable fast_cmov
4811         ;;
4812     esac
4813
4814 fi
4815
4816 if [ "$cpu" != generic ]; then
4817     add_cflags  $cpuflags
4818     add_asflags $cpuflags
4819     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4820 fi
4821
4822 # compiler sanity check
4823 check_exec <<EOF
4824 int main(void){ return 0; }
4825 EOF
4826 if test "$?" != 0; then
4827     echo "$cc is unable to create an executable file."
4828     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4829         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4830         echo "Only do this if you know what cross compiling means."
4831     fi
4832     die "C compiler test failed."
4833 fi
4834
4835 add_cppflags -D_ISOC99_SOURCE
4836 add_cxxflags -D__STDC_CONSTANT_MACROS
4837 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4838
4839 # some compilers silently accept -std=c11, so we also need to check that the
4840 # version macro is defined properly
4841 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4842     add_cflags -std=c11 ||
4843     check_cflags -std=c99
4844
4845 check_cppflags -D_FILE_OFFSET_BITS=64
4846 check_cppflags -D_LARGEFILE_SOURCE
4847
4848 add_host_cppflags -D_ISOC99_SOURCE
4849 check_host_cflags -std=c99
4850 check_host_cflags -Wall
4851 check_host_cflags $host_cflags_speed
4852
4853 check_64bit(){
4854     arch32=$1
4855     arch64=$2
4856     expr=$3
4857     check_code cc "" "int test[2*($expr) - 1]" &&
4858         subarch=$arch64 || subarch=$arch32
4859 }
4860
4861 case "$arch" in
4862     aarch64|alpha|ia64)
4863         spic=$shared
4864     ;;
4865     mips)
4866         check_64bit mips mips64 '_MIPS_SIM > 1'
4867         spic=$shared
4868     ;;
4869     parisc)
4870         check_64bit parisc parisc64 'sizeof(void *) > 4'
4871         spic=$shared
4872     ;;
4873     ppc)
4874         check_64bit ppc ppc64 'sizeof(void *) > 4'
4875         spic=$shared
4876     ;;
4877     s390)
4878         check_64bit s390 s390x 'sizeof(void *) > 4'
4879         spic=$shared
4880     ;;
4881     sparc)
4882         check_64bit sparc sparc64 'sizeof(void *) > 4'
4883         spic=$shared
4884     ;;
4885     x86)
4886         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4887         # Treat x32 as x64 for now. Note it also needs spic=$shared
4888         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4889             subarch=x86_64
4890         if test "$subarch" = "x86_64"; then
4891             spic=$shared
4892         fi
4893     ;;
4894     ppc)
4895         check_cc <<EOF && subarch="ppc64"
4896         int test[(int)sizeof(char*) - 7];
4897 EOF
4898     ;;
4899 esac
4900
4901 enable $subarch
4902 enabled spic && enable_weak pic
4903
4904 enabled x86_64 && objformat=elf64 || objformat="elf32"
4905
4906 # OS specific
4907 case $target_os in
4908     aix)
4909         SHFLAGS=-shared
4910         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4911         enabled shared && add_ldflags -Wl,-brtl
4912         ;;
4913     android)
4914         disable symver
4915         enable section_data_rel_ro
4916         SLIB_INSTALL_NAME='$(SLIBNAME)'
4917         SLIB_INSTALL_LINKS=
4918         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4919         ;;
4920     haiku)
4921         prefix_default="/boot/common"
4922         network_extralibs="-lnetwork"
4923         host_extralibs=
4924         ;;
4925     sunos)
4926         SHFLAGS='-shared -Wl,-h,$$(@F)'
4927         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4928         network_extralibs="-lsocket -lnsl"
4929         add_cppflags -D__EXTENSIONS__
4930         # When using suncc to build, the Solaris linker will mark
4931         # an executable with each instruction set encountered by
4932         # the Solaris assembler.  As our libraries contain their own
4933         # guards for processor-specific code, instead suppress
4934         # generation of the HWCAPS ELF section on Solaris x86 only.
4935         enabled_all suncc x86 &&
4936             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4937             add_ldflags -Wl,-M,mapfile
4938         nm_default='nm -P -g'
4939         version_script='-M'
4940         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4941         ;;
4942     netbsd)
4943         disable symver
4944         oss_indev_extralibs="-lossaudio"
4945         oss_outdev_extralibs="-lossaudio"
4946         enabled gcc || check_ldflags -Wl,-zmuldefs
4947         ;;
4948     openbsd|bitrig)
4949         disable symver
4950         SHFLAGS='-shared'
4951         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4952         SLIB_INSTALL_LINKS=
4953         oss_indev_extralibs="-lossaudio"
4954         oss_outdev_extralibs="-lossaudio"
4955         ;;
4956     dragonfly)
4957         disable symver
4958         ;;
4959     freebsd)
4960         ;;
4961     bsd/os)
4962         add_extralibs -lpoll -lgnugetopt
4963         strip="strip -d"
4964         ;;
4965     darwin)
4966         enabled ppc && add_asflags -force_cpusubtype_ALL
4967         install_name_dir_default='$(SHLIBDIR)'
4968         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4969         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4970         strip="${strip} -x"
4971         add_ldflags -Wl,-dynamic,-search_paths_first
4972         SLIBSUF=".dylib"
4973         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4974         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4975         objformat="macho"
4976         enabled x86_64 && objformat="macho64" || objformat="macho32"
4977         enabled_any pic shared x86_64 ||
4978             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4979         check_header dispatch/dispatch.h &&
4980             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4981         version_script='-exported_symbols_list'
4982         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4983         ;;
4984     msys*)
4985         die "Native MSYS builds are discouraged, please use the MINGW environment."
4986         ;;
4987     mingw32*|mingw64*)
4988         if test $target_os = "mingw32ce"; then
4989             disable network
4990         else
4991             target_os=mingw32
4992         fi
4993         LIBTARGET=i386
4994         if enabled x86_64; then
4995             LIBTARGET="i386:x86-64"
4996         elif enabled arm; then
4997             LIBTARGET=arm-wince
4998         fi
4999         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5000         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5001         shlibdir_default="$bindir_default"
5002         SLIBPREF=""
5003         SLIBSUF=".dll"
5004         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5005         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5006         dlltool="${cross_prefix}dlltool"
5007         if check_cmd lib.exe -list; then
5008             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5009             if enabled x86_64; then
5010                 LIBTARGET=x64
5011             fi
5012         elif check_cmd $dlltool --version; then
5013             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5014         fi
5015         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5016         SLIB_INSTALL_LINKS=
5017         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5018         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5019         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5020         enabled x86_64 && objformat="win64" || objformat="win32"
5021         ranlib=:
5022         enable dos_paths
5023         check_ldflags -Wl,--nxcompat,--dynamicbase
5024         # Lets work around some stupidity in binutils.
5025         # ld will strip relocations from executables even though we need them
5026         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5027         # however ld then forgets what the entry point should be (oops) so we
5028         # have to manually (re)set it.
5029         if enabled x86_32; then
5030             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5031         elif enabled x86_64; then
5032             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5033             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5034             # Set image base >4GB for extra entropy with HEASLR
5035             add_ldexeflags -Wl,--image-base,0x140000000
5036             append SHFLAGS -Wl,--image-base,0x180000000
5037         fi
5038         ;;
5039     win32|win64)
5040         disable symver
5041         if enabled shared; then
5042             # Link to the import library instead of the normal static library
5043             # for shared libs.
5044             LD_LIB='%.lib'
5045             # Cannot build both shared and static libs with MSVC or icl.
5046             disable static
5047         fi
5048         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5049         shlibdir_default="$bindir_default"
5050         SLIBPREF=""
5051         SLIBSUF=".dll"
5052         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5053         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5054         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5055         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5056         SLIB_INSTALL_LINKS=
5057         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5058         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5059         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5060         enabled x86_64 && objformat="win64" || objformat="win32"
5061         ranlib=:
5062         enable dos_paths
5063         ;;
5064     cygwin*)
5065         target_os=cygwin
5066         shlibdir_default="$bindir_default"
5067         SLIBPREF="cyg"
5068         SLIBSUF=".dll"
5069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5071         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5072         SLIB_INSTALL_LINKS=
5073         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5074         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5075         enabled x86_64 && objformat="win64" || objformat="win32"
5076         enable dos_paths
5077         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5078         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5079         ;;
5080     *-dos|freedos|opendos)
5081         network_extralibs="-lsocket"
5082         objformat="coff"
5083         enable dos_paths
5084         add_cppflags -U__STRICT_ANSI__
5085         ;;
5086     linux)
5087         enable section_data_rel_ro
5088         enabled_any arm aarch64 && enable_weak linux_perf
5089         ;;
5090     irix*)
5091         target_os=irix
5092         ranlib="echo ignoring ranlib"
5093         ;;
5094     os/2*)
5095         strip="lxlite -CS"
5096         striptype=""
5097         objformat="aout"
5098         add_cppflags -D_GNU_SOURCE
5099         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5100         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5101         LIBSUF="_s.a"
5102         SLIBPREF=""
5103         SLIBSUF=".dll"
5104         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5105         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5106         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5107             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5108             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5109             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5110             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5111         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5112             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5113         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5114         SLIB_INSTALL_LINKS=
5115         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5116         enable dos_paths
5117         enable_weak os2threads
5118         ;;
5119     gnu/kfreebsd)
5120         add_cppflags -D_BSD_SOURCE
5121         ;;
5122     gnu)
5123         ;;
5124     qnx)
5125         add_cppflags -D_QNX_SOURCE
5126         network_extralibs="-lsocket"
5127         ;;
5128     symbian)
5129         SLIBSUF=".dll"
5130         enable dos_paths
5131         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5132         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5133         add_ldflags -Wl,--target1-abs,--no-undefined \
5134                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5135                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5136         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5137                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5138                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5139         ;;
5140     osf1)
5141         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5142         ;;
5143     minix)
5144         ;;
5145     none)
5146         ;;
5147     *)
5148         die "Unknown OS '$target_os'."
5149         ;;
5150 esac
5151
5152 # test if creating links works
5153 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5154 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5155 mkdir "$link_dest"
5156 $ln_s "$link_dest" "$link_name"
5157 touch "$link_dest/test_file"
5158 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5159     # create link to source path
5160     [ -e src ] && rm src
5161     $ln_s "$source_path" src
5162     source_link=src
5163 else
5164     # creating directory links doesn't work
5165     # fall back to using the full source path
5166     source_link="$source_path"
5167 fi
5168 # cleanup
5169 rm -r "$link_dest"
5170 rm -r "$link_name"
5171
5172 # determine libc flavour
5173
5174 probe_libc(){
5175     pfx=$1
5176     pfx_no_=${pfx%_}
5177     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5178     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5179         eval ${pfx}libc_type=uclibc
5180         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5181     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5182         eval ${pfx}libc_type=glibc
5183         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5184     # MinGW headers can be installed on Cygwin, so check for newlib first.
5185     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5186         eval ${pfx}libc_type=newlib
5187         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5188     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5189     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5190         eval ${pfx}libc_type=mingw64
5191         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5192             add_compat msvcrt/snprintf.o
5193             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5194         fi
5195         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5196         eval test \$${pfx_no_}cc_type = "gcc" &&
5197             add_${pfx}cppflags -D__printf__=__gnu_printf__
5198     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5199          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5200         eval ${pfx}libc_type=mingw32
5201         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5202             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5203             die "ERROR: MinGW32 runtime version must be >= 3.15."
5204         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5205         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5206             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5207         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5208             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5209         eval test \$${pfx_no_}cc_type = "gcc" &&
5210             add_${pfx}cppflags -D__printf__=__gnu_printf__
5211     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5212         eval ${pfx}libc_type=msvcrt
5213         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5214             if [ "$pfx" = host_ ]; then
5215                 add_host_cppflags -Dsnprintf=_snprintf
5216             else
5217                 add_compat strtod.o strtod=avpriv_strtod
5218                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5219                                              _snprintf=avpriv_snprintf  \
5220                                              vsnprintf=avpriv_vsnprintf
5221             fi
5222         fi
5223         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5224         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5225         # 0x601 by default unless something else is set by the user.
5226         # This can easily lead to us detecting functions only present
5227         # in such new versions and producing binaries requiring windows 7.0.
5228         # Therefore explicitly set the default to XP unless the user has
5229         # set something else on the command line.
5230         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5231         # family. For these cases, configure is free to use any functions
5232         # found in the SDK headers by default. (Alternatively, we could force
5233         # _WIN32_WINNT to 0x0602 in that case.)
5234         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5235             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5236 #ifdef WINAPI_FAMILY
5237 #include <winapifamily.h>
5238 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5239 #error not desktop
5240 #endif
5241 #endif
5242 EOF
5243         if [ "$pfx" = "" ]; then
5244             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5245             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5246         fi
5247     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5248         eval ${pfx}libc_type=klibc
5249     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5250         eval ${pfx}libc_type=bionic
5251     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5252         eval ${pfx}libc_type=solaris
5253         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5254     fi
5255     check_${pfx}cc <<EOF
5256 #include <time.h>
5257 void *v = localtime_r;
5258 EOF
5259 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5260 #include <time.h>
5261 void *v = localtime_r;
5262 EOF
5263
5264 }
5265
5266 probe_libc
5267 test -n "$libc_type" && enable libc_$libc_type
5268 probe_libc host_
5269 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5270
5271 # hacks for compiler/libc/os combinations
5272
5273 case $libc_type in
5274     bionic)
5275         add_compat strtod.o strtod=avpriv_strtod
5276         ;;
5277     glibc)
5278         if enabled tms470; then
5279             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5280             add_cppflags -D__USER_LABEL_PREFIX__=
5281             add_cppflags -D__builtin_memset=memset
5282             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5283             add_cflags   -pds=48    # incompatible redefinition of macro
5284         elif enabled ccc; then
5285             add_ldflags -Wl,-z,now  # calls to libots crash without this
5286         fi
5287         ;;
5288 esac
5289
5290 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5291     add_cppflags '-I\$(SRC_PATH)/compat/float'
5292
5293 esc(){
5294     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5295 }
5296
5297 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5298
5299 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5300
5301 set_default libdir
5302 : ${shlibdir_default:="$libdir"}
5303 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5304
5305 set_default $PATHS_LIST
5306 set_default nm
5307
5308 # we need to build at least one lib type
5309 if ! enabled_any static shared; then
5310     cat <<EOF
5311 At least one library type must be built.
5312 Specify --enable-static to build the static libraries or --enable-shared to
5313 build the shared libraries as well. To only build the shared libraries specify
5314 --disable-static in addition to --enable-shared.
5315 EOF
5316     exit 1
5317 fi
5318
5319 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5320
5321 enable_weak_pic() {
5322     disabled pic && return
5323     enable pic
5324     add_cppflags -DPIC
5325     case "$target_os" in
5326     mingw*|cygwin*)
5327         ;;
5328     *)
5329         add_cflags -fPIC
5330         ;;
5331     esac
5332     add_asflags  -fPIC
5333 }
5334
5335 enabled pic && enable_weak_pic
5336
5337 check_cc <<EOF || die "Symbol mangling check failed."
5338 int ff_extern;
5339 EOF
5340 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5341 extern_prefix=${sym%%ff_extern*}
5342
5343 check_inline_asm inline_asm '"" ::'
5344
5345 _restrict=
5346 for restrict_keyword in restrict __restrict__ __restrict; do
5347     check_cc <<EOF && _restrict=$restrict_keyword && break
5348 void foo(char * $restrict_keyword p);
5349 EOF
5350 done
5351
5352 check_cc <<EOF && enable pragma_deprecated
5353 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5354 EOF
5355
5356 check_cc <<EOF && enable attribute_packed
5357 struct { int x; } __attribute__((packed)) x;
5358 EOF
5359
5360 check_cc <<EOF && enable attribute_may_alias
5361 union { int x; } __attribute__((may_alias)) x;
5362 EOF
5363
5364 check_cc <<EOF || die "endian test failed"
5365 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5366 EOF
5367 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5368
5369 check_cc <<EOF && enable const_nan
5370 #include <math.h>
5371 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5372 EOF
5373
5374 if ! enabled ppc64 || enabled bigendian; then
5375     disable vsx
5376 fi
5377
5378 check_gas() {
5379     log "check_gas using '$as' as AS"
5380     # :vararg is used on aarch64, arm and ppc altivec
5381     check_as <<EOF || return 1
5382 .macro m n, y:vararg=0
5383 \n: .int \y
5384 .endm
5385 m x
5386 EOF
5387     # .altmacro is only used in arm asm
5388     ! enabled arm || check_as <<EOF || return 1
5389 .altmacro
5390 EOF
5391     enable gnu_as
5392     return 0
5393 }
5394
5395 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5396     nogas=:
5397     enabled_any arm aarch64 && nogas=die
5398     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5399     as_noop=-v
5400
5401     case $as_type in
5402         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5403         gcc)  gaspp_as_type=gas ;;
5404         *)    gaspp_as_type=$as_type ;;
5405     esac
5406
5407     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5408
5409     test "${as#*gas-preprocessor.pl}" != "$as" ||
5410     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5411         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5412
5413     if ! check_gas ; then
5414         as=${gas:=$as}
5415         check_gas || \
5416             $nogas "GNU assembler not found, install/update gas-preprocessor"
5417     fi
5418
5419     check_as <<EOF && enable as_func
5420 .func test
5421 .endfunc
5422 EOF
5423 fi
5424
5425 check_inline_asm inline_asm_labels '"1:\n"'
5426
5427 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5428
5429 if enabled aarch64; then
5430     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5431     # internal assembler in clang 3.3 does not support this instruction
5432     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5433     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5434
5435     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5436
5437 elif enabled alpha; then
5438
5439     check_cflags -mieee
5440
5441 elif enabled arm; then
5442
5443     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5444
5445     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5446 float func(float a, float b){ return a+b; }
5447 EOF
5448
5449     enabled thumb && check_cflags -mthumb || check_cflags -marm
5450
5451     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5452         enable vfp_args
5453     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5454         enable vfp_args
5455     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5456         case "${cross_prefix:-$cc}" in
5457             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5458             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5459 __asm__ (".eabi_attribute 28, 1");
5460 int main(void) { return 0; }
5461 EOF
5462         esac
5463         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5464     fi
5465
5466     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5467     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5468     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5469     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5470     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5471     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5472     enabled setend  && check_insn setend  'setend be'
5473
5474     [ $target_os = linux ] || [ $target_os = android ] ||
5475         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5476             $ARCH_EXT_LIST_ARM
5477
5478     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5479
5480     check_as <<EOF && enable as_dn_directive
5481 ra .dn d0.i16
5482 .unreq ra
5483 EOF
5484     check_as <<EOF && enable as_fpu_directive
5485 .fpu neon
5486 EOF
5487
5488     # llvm's integrated assembler supports .object_arch from llvm 3.5
5489     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5490         check_as <<EOF && enable as_object_arch
5491 .object_arch armv4
5492 EOF
5493
5494     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5495
5496 elif enabled mips; then
5497
5498     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5499     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5500     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5501
5502     # Enable minimum ISA based on selected options
5503     if enabled mips64; then
5504         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5505         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5506         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5507     else
5508         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5509         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5510         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5511         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5512     fi
5513
5514     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5515     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5516     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5517     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5518     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5519
5520     if enabled bigendian && enabled msa; then
5521         disable msa
5522     fi
5523
5524 elif enabled parisc; then
5525
5526     if enabled gcc; then
5527         case $($cc -dumpversion) in
5528             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5529         esac
5530     fi
5531
5532 elif enabled ppc; then
5533
5534     enable local_aligned_8 local_aligned_16 local_aligned_32
5535
5536     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5537     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5538     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5539     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5540
5541     # AltiVec flags: The FSF version of GCC differs from the Apple version
5542     if enabled altivec; then
5543         check_cflags -maltivec -mabi=altivec &&
5544         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5545         check_cflags -faltivec
5546
5547         # check if our compiler supports Motorola AltiVec C API
5548         check_cc <<EOF || disable altivec
5549 $inc_altivec_h
5550 int main(void) {
5551     vector signed int v1 = (vector signed int) { 0 };
5552     vector signed int v2 = (vector signed int) { 1 };
5553     v1 = vec_add(v1, v2);
5554     return 0;
5555 }
5556 EOF
5557
5558         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5559     fi
5560
5561     if enabled vsx; then
5562         check_cflags -mvsx &&
5563         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5564     fi
5565
5566     if enabled power8; then
5567         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5568     fi
5569
5570 elif enabled x86; then
5571
5572     check_builtin rdtsc    intrin.h   "__rdtsc()"
5573     check_builtin mm_empty mmintrin.h "_mm_empty()"
5574
5575     enable local_aligned_8 local_aligned_16 local_aligned_32
5576
5577     # check whether EBP is available on x86
5578     # As 'i' is stored on the stack, this program will crash
5579     # if the base pointer is used to access it because the
5580     # base pointer is cleared in the inline assembly code.
5581     check_exec_crash <<EOF && enable ebp_available
5582 volatile int i=0;
5583 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5584 return i;
5585 EOF
5586
5587     # check whether EBX is available on x86
5588     check_inline_asm ebx_available '""::"b"(0)' &&
5589         check_inline_asm ebx_available '"":::"%ebx"'
5590
5591     # check whether xmm clobbers are supported
5592     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5593
5594     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5595         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5596
5597     # check whether binutils is new enough to compile SSSE3/MMXEXT
5598     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5599     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5600
5601     probe_x86asm(){
5602         x86asmexe_probe=$1
5603         if check_cmd $x86asmexe_probe -v; then
5604             x86asmexe=$x86asmexe_probe
5605             x86asm_type=nasm
5606             x86asm_debug="-g -F dwarf"
5607         elif check_cmd $x86asmexe_probe --version; then
5608             x86asmexe=$x86asmexe_probe
5609             x86asm_type=yasm
5610             x86asm_debug="-g dwarf2"
5611         fi
5612         check_x86asm "movbe ecx, [5]" && enable x86asm
5613     }
5614
5615     if ! disabled_any asm mmx x86asm; then
5616         disable x86asm
5617         for program in $x86asmexe nasm yasm; do
5618             probe_x86asm $program && break
5619         done
5620         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5621         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5622         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5623         X86ASMFLAGS="-f $objformat"
5624         enabled pic               && append X86ASMFLAGS "-DPIC"
5625         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5626         case "$objformat" in
5627             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5628         esac
5629
5630         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5631         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5632         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5633         check_x86asm "CPU amdnop" || disable cpunop
5634     fi
5635
5636     case "$cpu" in
5637         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5638             disable fast_clz
5639         ;;
5640     esac
5641
5642 fi
5643
5644 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5645
5646 check_ldflags -Wl,--as-needed
5647 check_ldflags -Wl,-z,noexecstack
5648
5649 if ! disabled network; then
5650     check_func getaddrinfo $network_extralibs
5651     check_func inet_aton $network_extralibs
5652
5653     check_type netdb.h "struct addrinfo"
5654     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5655     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5656     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5657     check_type poll.h "struct pollfd"
5658     check_type netinet/sctp.h "struct sctp_event_subscribe"
5659     check_struct "sys/socket.h" "struct msghdr" msg_flags
5660     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5661     check_type netinet/in.h "struct sockaddr_in6"
5662     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5663     check_type "sys/types.h sys/socket.h" socklen_t
5664
5665     # Prefer arpa/inet.h over winsock2
5666     if check_header arpa/inet.h ; then
5667         check_func closesocket
5668     elif check_header winsock2.h ; then
5669         check_func_headers winsock2.h closesocket -lws2 &&
5670             network_extralibs="-lws2" ||
5671         { check_func_headers winsock2.h closesocket -lws2_32 &&
5672             network_extralibs="-lws2_32"; } || disable winsock2_h network
5673         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5674
5675         check_type ws2tcpip.h socklen_t
5676         check_type ws2tcpip.h "struct addrinfo"
5677         check_type ws2tcpip.h "struct group_source_req"
5678         check_type ws2tcpip.h "struct ip_mreq_source"
5679         check_type ws2tcpip.h "struct ipv6_mreq"
5680         check_type winsock2.h "struct pollfd"
5681         check_struct winsock2.h "struct sockaddr" sa_len
5682         check_type ws2tcpip.h "struct sockaddr_in6"
5683         check_type ws2tcpip.h "struct sockaddr_storage"
5684     else
5685         disable network
5686     fi
5687 fi
5688
5689 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5690 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5691 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5692 check_builtin sarestart signal.h "SA_RESTART"
5693 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5694 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5695 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5696 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5697
5698 case "$custom_allocator" in
5699     jemalloc)
5700         # jemalloc by default does not use a prefix
5701         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5702     ;;
5703     tcmalloc)
5704         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5705         malloc_prefix=tc_
5706     ;;
5707 esac
5708
5709 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5710 check_func  ${malloc_prefix}memalign            && enable memalign
5711 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5712
5713 check_func  access
5714 check_func_headers stdlib.h arc4random
5715 check_func_headers time.h clock_gettime ||
5716     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5717 check_func  fcntl
5718 check_func  fork
5719 check_func  gethrtime
5720 check_func  getopt
5721 check_func  getrusage
5722 check_func  gettimeofday
5723 check_func  isatty
5724 check_func  mach_absolute_time
5725 check_func  mkstemp
5726 check_func  mmap
5727 check_func  mprotect
5728 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5729 check_func_headers time.h nanosleep ||
5730     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5731 check_func  sched_getaffinity
5732 check_func  setrlimit
5733 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5734 check_func  strerror_r
5735 check_func  sysconf
5736 check_func  sysctl
5737 check_func  usleep
5738
5739 check_func_headers conio.h kbhit
5740 check_func_headers io.h setmode
5741 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5742 check_func_headers stdlib.h getenv
5743 check_func_headers sys/stat.h lstat
5744
5745 check_func_headers windows.h GetProcessAffinityMask
5746 check_func_headers windows.h GetProcessTimes
5747 check_func_headers windows.h GetSystemTimeAsFileTime
5748 check_func_headers windows.h LoadLibrary
5749 check_func_headers windows.h MapViewOfFile
5750 check_func_headers windows.h PeekNamedPipe
5751 check_func_headers windows.h SetConsoleTextAttribute
5752 check_func_headers windows.h SetConsoleCtrlHandler
5753 check_func_headers windows.h Sleep
5754 check_func_headers windows.h VirtualAlloc
5755 check_struct windows.h "CONDITION_VARIABLE" Ptr
5756 check_func_headers glob.h glob
5757 enabled xlib &&
5758     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5759
5760 check_header d3d11.h
5761 check_header direct.h
5762 check_header dirent.h
5763 check_header dlfcn.h
5764 check_header dxgidebug.h
5765 check_header dxva.h
5766 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5767 check_header io.h
5768 check_header libcrystalhd/libcrystalhd_if.h
5769 check_header mach/mach_time.h
5770 check_header malloc.h
5771 check_header net/udplite.h
5772 check_header poll.h
5773 check_header sys/mman.h
5774 check_header sys/param.h
5775 check_header sys/resource.h
5776 check_header sys/select.h
5777 check_header sys/time.h
5778 check_header sys/un.h
5779 check_header termios.h
5780 check_header unistd.h
5781 check_header valgrind/valgrind.h
5782 check_header VideoDecodeAcceleration/VDADecoder.h
5783 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5784 check_header windows.h
5785 check_header X11/extensions/XvMClib.h
5786 check_header asm/types.h
5787
5788 # it seems there are versions of clang in some distros that try to use the
5789 # gcc headers, which explodes for stdatomic
5790 # so we also check that atomics actually work here
5791 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5792
5793 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5794 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5795 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5796 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5797
5798 enabled appkit       && check_apple_framework AppKit
5799 enabled audiotoolbox && check_apple_framework AudioToolbox
5800 enabled avfoundation && check_apple_framework AVFoundation
5801 enabled coreimage    && check_apple_framework CoreImage
5802 enabled videotoolbox && check_apple_framework VideoToolbox
5803
5804 enabled avfoundation && {
5805     check_lib avfoundation CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5806     check_lib avfoundation ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5807
5808 enabled videotoolbox && {
5809     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5810     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5811 }
5812
5813 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5814
5815 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5816 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5817 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5818 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5819 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5820
5821 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5822 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5823 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5824 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5825 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5826 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5827 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5828 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5829 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5830
5831 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5832
5833 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5834
5835 if ! disabled w32threads && ! enabled pthreads; then
5836     check_func_headers "windows.h process.h" _beginthreadex &&
5837         enable w32threads || disable w32threads
5838     if ! enabled w32threads && enabled winrt; then
5839         check_func_headers "windows.h" CreateThread &&
5840             enable w32threads || disable w32threads
5841     fi
5842 fi
5843
5844 # check for some common methods of building with pthread support
5845 # do this before the optional library checks as some of them require pthreads
5846 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5847     if check_lib pthreads pthread.h pthread_join   -pthread &&
5848        check_lib pthreads pthread.h pthread_create -pthread; then
5849         add_cflags -pthread
5850     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5851          check_lib pthreads pthread.h pthread_create -pthreads; then
5852         add_cflags -pthreads
5853     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5854          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5855         add_cflags -ldl -pthread
5856     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5857          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5858         :
5859     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5860          check_lib pthreads pthread.h pthread_create -lpthread; then
5861         :
5862     elif check_func pthread_join && check_func pthread_create; then
5863         enable pthreads
5864     fi
5865     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5866 fi
5867
5868
5869 if enabled pthreads; then
5870   check_func pthread_cancel
5871 fi
5872
5873 enabled pthreads &&
5874     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5875
5876 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5877 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5878 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5879
5880 # On some systems dynamic loading requires no extra linker flags
5881 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5882
5883 check_lib libm math.h sin -lm && LIBM="-lm"
5884
5885 atan2f_args=2
5886 copysign_args=2
5887 hypot_args=2
5888 ldexpf_args=2
5889 powf_args=2
5890
5891 for func in $MATH_FUNCS; do
5892     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5893 done
5894
5895 for func in $COMPLEX_FUNCS; do
5896     eval check_complexfunc $func \${${func}_args:-1}
5897 done
5898
5899 # these are off by default, so fail if requested and not available
5900 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5901 enabled cuvid             && { enabled cuda ||
5902                                die "ERROR: CUVID requires CUDA"; }
5903 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5904 enabled decklink          && { require_header DeckLinkAPI.h &&
5905                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5906 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5907 enabled frei0r            && require_header frei0r.h
5908 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5909 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5910 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5911 enabled ladspa            && require_header ladspa.h
5912 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5913 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5914 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5915 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5916 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5917                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5918                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5919 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5920 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5921 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion && LIBDRM="-ldrm"
5922 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5923                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5924                                  warn "using libfdk without pkg-config"; } }
5925 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5926 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5927 enabled fontconfig        && enable libfontconfig
5928 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5929 enabled libfreetype       && require_pkg_config libfreetype2 freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5930 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5931 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5932                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5933 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5934                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5935                                done || die "ERROR: libgsm not found"; }
5936 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5937 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5938 # While it may appear that require is being used as a pkg-config
5939 # fallback for libmfx, it is actually being used to detect a different
5940 # installation route altogether.  If libmfx is installed via the Intel
5941 # Media SDK or Intel Media Server Studio, these don't come with
5942 # pkg-config support.  Instead, users should make sure that the build
5943 # can find the libraries and headers through other means.
5944 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5945                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5946 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5947 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5948 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5949 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5950                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5951                                die "ERROR: libnpp not found"; }
5952 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5953 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5954 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5955                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5956                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5957                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5958 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5959 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5960                                check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 ||
5961                                { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5962                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5963                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5964                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5965                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5966                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5967                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5968                                die "ERROR: libopenjpeg not found"; }
5969 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5970 enabled libopus           && {
5971     enabled libopus_decoder && {
5972         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5973     }
5974     enabled libopus_encoder && {
5975         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5976     }
5977 }
5978 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5979 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5980 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5981 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5982 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5983 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5984                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5985 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5986 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5987 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5988 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
5989 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5990 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5991 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5992                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5993                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5994 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5995 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5996 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5997 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5998 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5999                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6000
6001 enabled libvpx            && {
6002     enabled libvpx_vp8_decoder && {
6003         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6004             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6005                 die "ERROR: libvpx decoder version must be >=0.9.1";
6006     }
6007     enabled libvpx_vp8_encoder && {
6008         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6009             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6010                 die "ERROR: libvpx encoder version must be >=0.9.7";
6011     }
6012     enabled libvpx_vp9_decoder && {
6013         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6014             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6015     }
6016     enabled libvpx_vp9_encoder && {
6017         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6018             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6019     }
6020     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6021         die "libvpx enabled but no supported decoders found"
6022     fi
6023 }
6024
6025 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6026 enabled libwebp           && {
6027     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6028     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6029 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6030                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6031                                  warn "using libx264 without pkg-config"; } } &&
6032                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6033                              { check_cpp_condition x264.h "X264_MPEG2" &&
6034                                enable libx262; }
6035 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6036                              require_cpp_condition x265.h "X265_BUILD >= 68"
6037 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
6038 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6039 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6040 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6041 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
6042                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6043                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6044 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6045 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6046 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6047                                { ! enabled cross_compile &&
6048                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6049                                  add_ldflags -L/opt/vc/lib/ &&
6050                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6051                                die "ERROR: mmal not found" &&
6052                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6053 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6054                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6055                                die "ERROR: openal not found"; } &&
6056                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6057                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6058 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6059                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6060                                die "ERROR: opencl not found"; } &&
6061                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6062                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6063                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6064 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6065                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6066                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6067                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6068                                die "ERROR: opengl not found."
6069                              }
6070 enabled omx_rpi           && { check_header OMX_Core.h ||
6071                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6072                                die "ERROR: OpenMAX IL headers not found"; }
6073 enabled omx               && require_header OMX_Core.h
6074 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6075                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6076                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6077                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6078                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6079                                die "ERROR: openssl not found"; }
6080 enabled rkmpp             && { { require_pkg_config rockchip_mpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6081                                  die "ERROR : Rockchip MPP was not found."; } &&
6082                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6083                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6084                                { enabled libdrm ||
6085                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6086                              }
6087
6088 if enabled gcrypt; then
6089     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6090     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6091         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6092         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6093         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6094             die "ERROR: gcrypt not found"
6095         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6096     else
6097         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6098     fi
6099 fi
6100
6101 if enabled sdl2; then
6102     SDL2_CONFIG="${cross_prefix}sdl2-config"
6103     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6104         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6105             disable sdl2
6106     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6107         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6108         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6109         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6110         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6111         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6112             enable sdl2
6113     fi
6114     if test $target_os = "mingw32"; then
6115         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6116     fi
6117 fi
6118 enabled sdl2 && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags) && add_extralibs $sdl2_extralibs
6119
6120 if enabled decklink; then
6121     case $target_os in
6122         mingw32*|mingw64*|win32|win64)
6123             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6124             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6125             ;;
6126     esac
6127 fi
6128
6129 enabled securetransport &&
6130     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6131     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6132         disable securetransport
6133
6134 enabled schannel &&
6135     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6136     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6137     add_extralibs -lsecur32 ||
6138         disable schannel
6139
6140 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6141 enabled makeinfo \
6142     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6143     && enable makeinfo_html || disable makeinfo_html
6144 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6145 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6146 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6147 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6148
6149 # check V4L2 codecs available in the API
6150 check_header linux/fb.h
6151 check_header linux/videodev2.h
6152 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6153 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6154 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6155 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6156 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6157 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6158 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6159 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6160 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6161 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6162 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6163
6164 check_header sys/videoio.h
6165 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6166
6167 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6168 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6169 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6170 # w32api 3.12 had it defined wrong
6171 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6172
6173 check_type "dshow.h" IBaseFilter
6174
6175 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6176 { check_header dev/bktr/ioctl_meteor.h &&
6177   check_header dev/bktr/ioctl_bt848.h; } ||
6178 { check_header machine/ioctl_meteor.h &&
6179   check_header machine/ioctl_bt848.h; } ||
6180 { check_header dev/video/meteor/ioctl_meteor.h &&
6181   check_header dev/video/bktr/ioctl_bt848.h; } ||
6182 check_header dev/ic/bt8xx.h
6183
6184 if check_struct sys/soundcard.h audio_buf_info bytes; then
6185     enable_safe sys/soundcard.h
6186 else
6187     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6188     #include <sys/soundcard.h>
6189     audio_buf_info abc;
6190 EOF
6191 fi
6192 check_header soundcard.h
6193
6194 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6195
6196 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6197     check_func jack_port_get_latency_range -ljack
6198
6199 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6200
6201 if enabled libcdio; then
6202     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6203     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6204     die "ERROR: No usable libcdio/cdparanoia found"
6205 fi
6206
6207 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6208     disable libxcb_shm libxcb_shape libxcb_xfixes
6209
6210 if enabled libxcb; then
6211     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6212     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6213     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6214
6215     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6216     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6217 fi
6218
6219 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6220
6221 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6222 # the desktop api partition
6223 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6224 #ifdef WINAPI_FAMILY
6225 #include <winapifamily.h>
6226 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6227 #error desktop, not uwp
6228 #else
6229 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6230 #endif
6231 #else
6232 #error no family set
6233 #endif
6234 EOF
6235
6236 enabled vaapi &&
6237     check_lib vaapi va/va.h vaInitialize -lva
6238
6239 enabled vaapi &&
6240     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6241     disable vaapi
6242
6243 enabled vaapi &&
6244     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6245
6246 enabled vaapi &&
6247     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6248
6249 enabled vaapi &&
6250     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6251     enable vaapi_1
6252
6253 enabled vdpau &&
6254     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6255     disable vdpau
6256
6257 enabled vdpau &&
6258     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6259
6260 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6261
6262 if enabled x86; then
6263     case $target_os in
6264         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6265             ;;
6266         *)
6267             disable cuda cuvid nvenc
6268             ;;
6269     esac
6270 else
6271     disable cuda cuvid nvenc
6272 fi
6273
6274 enabled nvenc &&
6275     check_cc -I$source_path <<EOF || disable nvenc
6276 #include "compat/nvenc/nvEncodeAPI.h"
6277 NV_ENCODE_API_FUNCTION_LIST flist;
6278 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6279 int main(void) { return 0; }
6280 EOF
6281
6282 # Funny iconv installations are not unusual, so check it after all flags have been set
6283 if enabled libc_iconv; then
6284     check_func_headers iconv.h iconv
6285 elif enabled iconv; then
6286     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6287 fi
6288
6289 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6290
6291 # add some useful compiler flags if supported
6292 check_cflags -Wdeclaration-after-statement
6293 check_cflags -Wall
6294 check_cflags -Wdisabled-optimization
6295 check_cflags -Wpointer-arith
6296 check_cflags -Wredundant-decls
6297 check_cflags -Wwrite-strings
6298 check_cflags -Wtype-limits
6299 check_cflags -Wundef
6300 check_cflags -Wmissing-prototypes
6301 check_cflags -Wno-pointer-to-int-cast
6302 check_cflags -Wstrict-prototypes
6303 check_cflags -Wempty-body
6304
6305 if enabled extra_warnings; then
6306     check_cflags -Wcast-qual
6307     check_cflags -Wextra
6308     check_cflags -Wpedantic
6309 fi
6310
6311 check_disable_warning(){
6312     warning_flag=-W${1#-Wno-}
6313     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6314 }
6315
6316 test_cflags -Werror=unused-command-line-argument &&
6317     append unknown_warning_flags "-Werror=unused-command-line-argument"
6318 test_cflags -Werror=unknown-warning-option &&
6319     append unknown_warning_flags "-Werror=unknown-warning-option"
6320
6321 check_disable_warning -Wno-parentheses
6322 check_disable_warning -Wno-switch
6323 check_disable_warning -Wno-format-zero-length
6324 check_disable_warning -Wno-pointer-sign
6325 check_disable_warning -Wno-unused-const-variable
6326 check_disable_warning -Wno-bool-operation
6327
6328 check_disable_warning_headers(){
6329     warning_flag=-W${1#-Wno-}
6330     test_cflags $warning_flag && add_cflags_headers $1
6331 }
6332
6333 check_disable_warning_headers -Wno-deprecated-declarations
6334 check_disable_warning_headers -Wno-unused-variable
6335
6336 check_cc <<EOF && enable blocks_extension
6337 void (^block)(void);
6338 EOF
6339
6340 # add some linker flags
6341 check_ldflags -Wl,--warn-common
6342 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6343 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6344 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6345 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6346
6347 # add some strip flags
6348 check_stripflags -x
6349
6350 enabled neon_clobber_test &&
6351     check_ldflags -Wl,--wrap,avcodec_open2              \
6352                   -Wl,--wrap,avcodec_decode_audio4      \
6353                   -Wl,--wrap,avcodec_decode_video2      \
6354                   -Wl,--wrap,avcodec_decode_subtitle2   \
6355                   -Wl,--wrap,avcodec_encode_audio2      \
6356                   -Wl,--wrap,avcodec_encode_video2      \
6357                   -Wl,--wrap,avcodec_encode_subtitle    \
6358                   -Wl,--wrap,avcodec_send_packet        \
6359                   -Wl,--wrap,avcodec_receive_packet     \
6360                   -Wl,--wrap,avcodec_send_frame         \
6361                   -Wl,--wrap,avcodec_receive_frame      \
6362                   -Wl,--wrap,swr_convert                \
6363                   -Wl,--wrap,avresample_convert ||
6364     disable neon_clobber_test
6365
6366 enabled xmm_clobber_test &&
6367     check_ldflags -Wl,--wrap,avcodec_open2              \
6368                   -Wl,--wrap,avcodec_decode_audio4      \
6369                   -Wl,--wrap,avcodec_decode_video2      \
6370                   -Wl,--wrap,avcodec_decode_subtitle2   \
6371                   -Wl,--wrap,avcodec_encode_audio2      \
6372                   -Wl,--wrap,avcodec_encode_video2      \
6373                   -Wl,--wrap,avcodec_encode_subtitle    \
6374                   -Wl,--wrap,avcodec_send_packet        \
6375                   -Wl,--wrap,avcodec_receive_packet     \
6376                   -Wl,--wrap,avcodec_send_frame         \
6377                   -Wl,--wrap,avcodec_receive_frame      \
6378                   -Wl,--wrap,swr_convert                \
6379                   -Wl,--wrap,avresample_convert         \
6380                   -Wl,--wrap,sws_scale ||
6381     disable xmm_clobber_test
6382
6383 check_ld "cc" <<EOF && enable proper_dce
6384 extern const int array[512];
6385 static inline int func(void) { return array[0]; }
6386 int main(void) { return 0; }
6387 EOF
6388
6389 if enabled proper_dce; then
6390     echo "X { local: *; };" > $TMPV
6391     if test_ldflags -Wl,${version_script},$TMPV; then
6392         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6393         check_cc <<EOF && enable symver_asm_label
6394 void ff_foo(void) __asm__ ("av_foo@VERSION");
6395 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6396 EOF
6397         check_cc <<EOF && enable symver_gnu_asm
6398 __asm__(".symver ff_foo,av_foo@VERSION");
6399 void ff_foo(void) {}
6400 EOF
6401     fi
6402 fi
6403
6404 if [ -z "$optflags" ]; then
6405     if enabled small; then
6406         optflags=$cflags_size
6407     elif enabled optimizations; then
6408         optflags=$cflags_speed
6409     else
6410         optflags=$cflags_noopt
6411     fi
6412 fi
6413
6414 if [ -z "$nvccflags" ]; then
6415     nvccflags=$nvccflags_default
6416 fi
6417
6418 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6419     nvccflags="$nvccflags -m64"
6420 else
6421     nvccflags="$nvccflags -m32"
6422 fi
6423
6424 check_optflags(){
6425     check_cflags "$@"
6426     enabled lto && check_ldflags "$@"
6427 }
6428
6429 check_optflags $optflags
6430 check_optflags -fno-math-errno
6431 check_optflags -fno-signed-zeros
6432
6433 if enabled lto; then
6434     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6435     check_cflags  -flto
6436     check_ldflags -flto $cpuflags
6437     disable inline_asm_direct_symbol_refs
6438 fi
6439
6440 enabled ftrapv && check_cflags -ftrapv
6441
6442 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6443 int x;
6444 EOF
6445
6446
6447 if enabled icc; then
6448     # Just warnings, no remarks
6449     check_cflags -w1
6450     # -wd: Disable following warnings
6451     # 144, 167, 556: -Wno-pointer-sign
6452     # 188: enumerated type mixed with another type
6453     # 1292: attribute "foo" ignored
6454     # 1419: external declaration in primary source file
6455     # 10006: ignoring unknown option -fno-signed-zeros
6456     # 10148: ignoring unknown option -Wno-parentheses
6457     # 10156: ignoring option '-W'; no argument required
6458     # 13200: No EMMS instruction before call to function
6459     # 13203: No EMMS instruction before return from function
6460     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6461     # 11030: Warning unknown option --as-needed
6462     # 10156: ignoring option '-export'; no argument required
6463     check_ldflags -wd10156,11030
6464     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6465     enable ebp_available
6466     # The test above does not test linking
6467     enabled lto && disable symver_asm_label
6468     if enabled x86_32; then
6469         icc_version=$($cc -dumpversion)
6470         test ${icc_version%%.*} -ge 11 &&
6471             check_cflags -falign-stack=maintain-16-byte ||
6472             disable aligned_stack
6473     fi
6474 elif enabled ccc; then
6475     # disable some annoying warnings
6476     add_cflags -msg_disable bitnotint
6477     add_cflags -msg_disable mixfuncvoid
6478     add_cflags -msg_disable nonstandcast
6479     add_cflags -msg_disable unsupieee
6480 elif enabled gcc; then
6481     check_optflags -fno-tree-vectorize
6482     check_cflags -Werror=format-security
6483     check_cflags -Werror=implicit-function-declaration
6484     check_cflags -Werror=missing-prototypes
6485     check_cflags -Werror=return-type
6486     check_cflags -Werror=vla
6487     check_cflags -Wformat
6488     check_cflags -fdiagnostics-color=auto
6489     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6490 elif enabled llvm_gcc; then
6491     check_cflags -mllvm -stack-alignment=16
6492 elif enabled clang; then
6493     check_cflags -mllvm -stack-alignment=16
6494     check_cflags -mstack-alignment=16
6495     check_cflags -Qunused-arguments
6496     check_cflags -Werror=implicit-function-declaration
6497     check_cflags -Werror=missing-prototypes
6498     check_cflags -Werror=return-type
6499 elif enabled cparser; then
6500     add_cflags -Wno-missing-variable-declarations
6501     add_cflags -Wno-empty-statement
6502 elif enabled armcc; then
6503     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6504     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6505     # 2523: use of inline assembly is deprecated
6506     add_cflags -W${armcc_opt},--diag_suppress=2523
6507     add_cflags -W${armcc_opt},--diag_suppress=1207
6508     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6509     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6510     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6511     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6512 elif enabled tms470; then
6513     add_cflags -pds=824 -pds=837
6514     disable inline_asm
6515 elif enabled pathscale; then
6516     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6517 elif enabled_any msvc icl; then
6518     enabled x86_32 && disable aligned_stack
6519     enabled_all x86_32 debug && add_cflags -Oy-
6520     enabled debug && add_ldflags -debug
6521     enable pragma_deprecated
6522     if enabled icl; then
6523         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6524         # (correctly) on icl 13.x.
6525         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6526             add_cflags -Qansi-alias
6527         # Some inline asm is not compilable in debug
6528         if enabled debug; then
6529             disable ebp_available
6530             disable ebx_available
6531         fi
6532     fi
6533     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6534     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6535     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6536     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6537     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6538     # MSVC 2013 and newer can handle it fine.
6539     # If this declspec fails, force including stdlib.h before the restrict redefinition
6540     # happens in config.h.
6541     if [ $_restrict != restrict ]; then
6542         check_cc <<EOF || add_cflags -FIstdlib.h
6543 __declspec($_restrict) void* foo(int);
6544 EOF
6545     fi
6546     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6547     # Issue has been fixed in MSVC v19.00.24218.
6548     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6549         check_cflags -d2SSAOptimizer-
6550     # enable utf-8 source processing on VS2015 U2 and newer
6551     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6552         add_cflags -utf-8
6553 fi
6554
6555 for pfx in "" host_; do
6556     varname=${pfx%_}cc_type
6557     eval "type=\$$varname"
6558     if [ "$type" = "msvc" ]; then
6559         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6560 static inline int foo(int a) { return a; }
6561 EOF
6562     fi
6563 done
6564
6565 case $as_type in
6566     clang)
6567         add_asflags -Qunused-arguments
6568     ;;
6569 esac
6570
6571 case $ld_type in
6572     clang)
6573         check_ldflags -Qunused-arguments
6574     ;;
6575 esac
6576
6577 case $target_os in
6578     osf1)
6579         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6580     ;;
6581 esac
6582
6583 enable frame_thread_encoder
6584
6585 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6586
6587 check_deps $CONFIG_LIST       \
6588            $CONFIG_EXTRA      \
6589            $HAVE_LIST         \
6590            $ALL_COMPONENTS    \
6591
6592 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6593
6594
6595 if test $target_os = "haiku"; then
6596     disable memalign
6597     disable posix_memalign
6598 fi
6599
6600 # add_dep lib dep
6601 # -> enable ${lib}_deps_${dep}
6602 # -> add $dep to ${lib}_deps only once
6603 add_dep() {
6604     lib=$1
6605     dep=$2
6606     enabled "${lib}_deps_${dep}" && return 0
6607     enable  "${lib}_deps_${dep}"
6608     prepend "${lib}_deps" $dep
6609 }
6610
6611 # merge deps lib components
6612 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6613 merge_deps() {
6614     lib=$1
6615     shift
6616     for comp in $*; do
6617         enabled $comp || continue
6618         eval "dep=\"\$${comp}_deps\""
6619         for d in $dep; do
6620             add_dep $lib $d
6621         done
6622     done
6623 }
6624
6625 merge_deps libavfilter $FILTER_LIST
6626
6627 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6628
6629 for thread in $THREADS_LIST; do
6630     if enabled $thread; then
6631         test -n "$thread_type" &&
6632             die "ERROR: Only one thread type must be selected." ||
6633             thread_type="$thread"
6634     fi
6635 done
6636
6637 if disabled stdatomic_h; then
6638     if enabled atomics_gcc; then
6639         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6640     elif enabled atomics_win32; then
6641         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6642     elif enabled atomics_suncc; then
6643         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6644     elif enabled pthreads; then
6645         add_compat atomics/pthread/stdatomic.o
6646         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6647     else
6648         enabled threads && die "Threading is enabled, but no atomics are available"
6649         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6650     fi
6651 fi
6652
6653 # Check if requested libraries were found.
6654 for lib in $AUTODETECT_LIBS; do
6655     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6656 done
6657
6658 enabled zlib && add_cppflags -DZLIB_CONST
6659
6660 # conditional library dependencies, in linking order
6661 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6662 enabled afir_filter         && prepend avfilter_deps "avcodec"
6663 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6664 enabled aresample_filter    && prepend avfilter_deps "swresample"
6665 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6666 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6667 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6668 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6669 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6670 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6671 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6672 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6673 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6674 enabled pan_filter          && prepend avfilter_deps "swresample"
6675 enabled pp_filter           && prepend avfilter_deps "postproc"
6676 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6677 enabled resample_filter && prepend avfilter_deps "avresample"
6678 enabled sab_filter          && prepend avfilter_deps "swscale"
6679 enabled scale_filter    && prepend avfilter_deps "swscale"
6680 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6681 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6682 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6683 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6684 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6685 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6686 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6687 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6688 enabled spp_filter          && prepend avfilter_deps "avcodec"
6689 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6690 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6691 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6692
6693 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6694
6695 enabled opus_decoder    && prepend avcodec_deps "swresample"
6696
6697 expand_deps(){
6698     lib_deps=${1}_deps
6699     eval "deps=\$$lib_deps"
6700     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6701     unique $lib_deps
6702 }
6703
6704 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6705 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6706
6707 map 'expand_deps $v' $LIBRARY_LIST
6708
6709 license="LGPL version 2.1 or later"
6710 if enabled nonfree; then
6711     license="nonfree and unredistributable"
6712 elif enabled gplv3; then
6713     license="GPL version 3 or later"
6714 elif enabled lgplv3; then
6715     license="LGPL version 3 or later"
6716 elif enabled gpl; then
6717     license="GPL version 2 or later"
6718 fi
6719
6720 if test "$quiet" != "yes"; then
6721
6722 echo "install prefix            $prefix"
6723 echo "source path               $source_path"
6724 echo "C compiler                $cc"
6725 echo "C library                 $libc_type"
6726 if test "$host_cc" != "$cc"; then
6727     echo "host C compiler           $host_cc"
6728     echo "host C library            $host_libc_type"
6729 fi
6730 echo "ARCH                      $arch ($cpu)"
6731 if test "$build_suffix" != ""; then
6732     echo "build suffix              $build_suffix"
6733 fi
6734 if test "$progs_suffix" != ""; then
6735     echo "progs suffix              $progs_suffix"
6736 fi
6737 if test "$extra_version" != ""; then
6738     echo "version string suffix     $extra_version"
6739 fi
6740 echo "big-endian                ${bigendian-no}"
6741 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6742 if enabled x86; then
6743     echo "standalone assembly       ${x86asm-no}"
6744     echo "x86 assembler             ${x86asmexe}"
6745     echo "MMX enabled               ${mmx-no}"
6746     echo "MMXEXT enabled            ${mmxext-no}"
6747     echo "3DNow! enabled            ${amd3dnow-no}"
6748     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6749     echo "SSE enabled               ${sse-no}"
6750     echo "SSSE3 enabled             ${ssse3-no}"
6751     echo "AESNI enabled             ${aesni-no}"
6752     echo "AVX enabled               ${avx-no}"
6753     echo "AVX2 enabled              ${avx2-no}"
6754     echo "XOP enabled               ${xop-no}"
6755     echo "FMA3 enabled              ${fma3-no}"
6756     echo "FMA4 enabled              ${fma4-no}"
6757     echo "i686 features enabled     ${i686-no}"
6758     echo "CMOV is fast              ${fast_cmov-no}"
6759     echo "EBX available             ${ebx_available-no}"
6760     echo "EBP available             ${ebp_available-no}"
6761 fi
6762 if enabled aarch64; then
6763     echo "NEON enabled              ${neon-no}"
6764     echo "VFP enabled               ${vfp-no}"
6765 fi
6766 if enabled arm; then
6767     echo "ARMv5TE enabled           ${armv5te-no}"
6768     echo "ARMv6 enabled             ${armv6-no}"
6769     echo "ARMv6T2 enabled           ${armv6t2-no}"
6770     echo "VFP enabled               ${vfp-no}"
6771     echo "NEON enabled              ${neon-no}"
6772     echo "THUMB enabled             ${thumb-no}"
6773 fi
6774 if enabled mips; then
6775     echo "MIPS FPU enabled          ${mipsfpu-no}"
6776     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6777     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6778     echo "MIPS MSA enabled          ${msa-no}"
6779     echo "LOONGSON MMI enabled      ${mmi-no}"
6780 fi
6781 if enabled ppc; then
6782     echo "AltiVec enabled           ${altivec-no}"
6783     echo "VSX enabled               ${vsx-no}"
6784     echo "POWER8 enabled            ${power8-no}"
6785     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6786     echo "dcbzl available           ${dcbzl-no}"
6787 fi
6788 echo "debug symbols             ${debug-no}"
6789 echo "strip symbols             ${stripping-no}"
6790 echo "optimize for size         ${small-no}"
6791 echo "optimizations             ${optimizations-no}"
6792 echo "static                    ${static-no}"
6793 echo "shared                    ${shared-no}"
6794 echo "postprocessing support    ${postproc-no}"
6795 echo "network support           ${network-no}"
6796 echo "threading support         ${thread_type-no}"
6797 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6798 echo "texi2html enabled         ${texi2html-no}"
6799 echo "perl enabled              ${perl-no}"
6800 echo "pod2man enabled           ${pod2man-no}"
6801 echo "makeinfo enabled          ${makeinfo-no}"
6802 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6803 test -n "$random_seed" &&
6804     echo "random seed               ${random_seed}"
6805 echo
6806
6807 echo "External libraries:"
6808 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6809 echo
6810
6811 echo "External libraries providing hardware acceleration:"
6812 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6813 echo
6814
6815 echo "Libraries:"
6816 print_enabled '' $LIBRARY_LIST | print_in_columns
6817 echo
6818
6819 echo "Programs:"
6820 print_enabled '' $PROGRAM_LIST | print_in_columns
6821 echo
6822
6823 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6824     echo "Enabled ${type}s:"
6825     eval list=\$$(toupper $type)_LIST
6826     print_enabled '_*' $list | print_in_columns
6827     echo
6828 done
6829
6830 if test -n "$ignore_tests"; then
6831     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6832     echo "Ignored FATE tests:"
6833     echo $ignore_tests | print_in_columns
6834     echo
6835 fi
6836
6837 echo "License: $license"
6838
6839 echo "Creating configuration files ..."
6840
6841 fi # test "$quiet" != "yes"
6842
6843 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6844
6845 enabled stripping || strip="echo skipping strip"
6846 enabled stripping || striptype=""
6847
6848 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6849
6850 cat > ffbuild/config.mak <<EOF
6851 # Automatically generated by configure - do not modify!
6852 ifndef FFMPEG_CONFIG_MAK
6853 FFMPEG_CONFIG_MAK=1
6854 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6855 prefix=$prefix
6856 LIBDIR=\$(DESTDIR)$libdir
6857 SHLIBDIR=\$(DESTDIR)$shlibdir
6858 INCDIR=\$(DESTDIR)$incdir
6859 BINDIR=\$(DESTDIR)$bindir
6860 DATADIR=\$(DESTDIR)$datadir
6861 DOCDIR=\$(DESTDIR)$docdir
6862 MANDIR=\$(DESTDIR)$mandir
6863 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6864 INSTALL_NAME_DIR=$install_name_dir
6865 SRC_PATH=$source_path
6866 SRC_LINK=$source_link
6867 ifndef MAIN_MAKEFILE
6868 SRC_PATH:=\$(SRC_PATH:.%=..%)
6869 endif
6870 CC_IDENT=$cc_ident
6871 ARCH=$arch
6872 INTRINSICS=$intrinsics
6873 CC=$cc
6874 CXX=$cxx
6875 AS=$as
6876 OBJCC=$objcc
6877 LD=$ld
6878 DEPCC=$dep_cc
6879 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6880 DEPAS=$as
6881 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6882 X86ASM=$x86asmexe
6883 DEPX86ASM=$x86asmexe
6884 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6885 AR=$ar
6886 ARFLAGS=$arflags
6887 AR_O=$ar_o
6888 RANLIB=$ranlib
6889 STRIP=$strip
6890 STRIPTYPE=$striptype
6891 NVCC=$nvcc
6892 CP=cp -p
6893 LN_S=$ln_s
6894 CPPFLAGS=$CPPFLAGS
6895 CFLAGS=$CFLAGS
6896 CXXFLAGS=$CXXFLAGS
6897 OBJCFLAGS=$OBJCFLAGS
6898 ASFLAGS=$ASFLAGS
6899 NVCCFLAGS=$nvccflags
6900 AS_C=$AS_C
6901 AS_O=$AS_O
6902 OBJCC_C=$OBJCC_C
6903 OBJCC_E=$OBJCC_E
6904 OBJCC_O=$OBJCC_O
6905 CC_C=$CC_C
6906 CC_E=$CC_E
6907 CC_O=$CC_O
6908 CXX_C=$CXX_C
6909 CXX_O=$CXX_O
6910 NVCC_C=$NVCC_C
6911 NVCC_O=$NVCC_O
6912 LD_O=$LD_O
6913 X86ASM_O=$X86ASM_O
6914 LD_LIB=$LD_LIB
6915 LD_PATH=$LD_PATH
6916 DLLTOOL=$dlltool
6917 WINDRES=$windres
6918 DEPWINDRES=$dep_cc
6919 DOXYGEN=$doxygen
6920 LDFLAGS=$LDFLAGS
6921 LDEXEFLAGS=$LDEXEFLAGS
6922 LDLIBFLAGS=$LDLIBFLAGS
6923 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6924 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6925 X86ASMFLAGS=$X86ASMFLAGS
6926 BUILDSUF=$build_suffix
6927 PROGSSUF=$progs_suffix
6928 FULLNAME=$FULLNAME
6929 LIBPREF=$LIBPREF
6930 LIBSUF=$LIBSUF
6931 LIBNAME=$LIBNAME
6932 SLIBPREF=$SLIBPREF
6933 SLIBSUF=$SLIBSUF
6934 EXESUF=$EXESUF
6935 EXTRA_VERSION=$extra_version
6936 CCDEP=$CCDEP
6937 CXXDEP=$CXXDEP
6938 CCDEP_FLAGS=$CCDEP_FLAGS
6939 ASDEP=$ASDEP
6940 ASDEP_FLAGS=$ASDEP_FLAGS
6941 X86ASMDEP=$X86ASMDEP
6942 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6943 CC_DEPFLAGS=$CC_DEPFLAGS
6944 AS_DEPFLAGS=$AS_DEPFLAGS
6945 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6946 HOSTCC=$host_cc
6947 HOSTLD=$host_ld
6948 HOSTCFLAGS=$host_cflags
6949 HOSTCPPFLAGS=$host_cppflags
6950 HOSTEXESUF=$HOSTEXESUF
6951 HOSTLDFLAGS=$host_ldflags
6952 HOSTEXTRALIBS=$host_extralibs
6953 DEPHOSTCC=$host_cc
6954 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6955 HOSTCCDEP=$HOSTCCDEP
6956 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6957 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6958 HOSTCC_C=$HOSTCC_C
6959 HOSTCC_O=$HOSTCC_O
6960 HOSTLD_O=$HOSTLD_O
6961 TARGET_EXEC=$target_exec $target_exec_args
6962 TARGET_PATH=$target_path
6963 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6964 CFLAGS-ffplay=${sdl2_cflags}
6965 CFLAGS_HEADERS=$CFLAGS_HEADERS
6966 ZLIB=$($ldflags_filter -lz)
6967 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6968 EXTRALIBS=$extralibs
6969 COMPAT_OBJS=$compat_objs
6970 INSTALL=$install
6971 LIBTARGET=${LIBTARGET}
6972 SLIBNAME=${SLIBNAME}
6973 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6974 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6975 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6976 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6977 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6978 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6979 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6980 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6981 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6982 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6983 NOREDZONE_FLAGS=$noredzone_flags
6984 LIBFUZZER_PATH=$libfuzzer_path
6985 IGNORE_TESTS=$ignore_tests
6986 EOF
6987
6988 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6989
6990 print_program_extralibs(){
6991     eval "program_extralibs=\$${1}_extralibs"
6992     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6993 }
6994
6995 map 'print_program_extralibs $v' $PROGRAM_LIST
6996
6997 cat > $TMPH <<EOF
6998 /* Automatically generated by configure - do not modify! */
6999 #ifndef FFMPEG_CONFIG_H
7000 #define FFMPEG_CONFIG_H
7001 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7002 #define FFMPEG_LICENSE "$(c_escape $license)"
7003 #define CONFIG_THIS_YEAR 2023
7004 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7005 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7006 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7007 #define av_restrict $_restrict
7008 #define EXTERN_PREFIX "${extern_prefix}"
7009 #define EXTERN_ASM ${extern_prefix}
7010 #define BUILDSUF "$build_suffix"
7011 #define SLIBSUF "$SLIBSUF"
7012 #define HAVE_MMX2 HAVE_MMXEXT
7013 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7014 EOF
7015
7016 test -n "$assert_level" &&
7017     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7018
7019 test -n "$malloc_prefix" &&
7020     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7021
7022 if enabled x86asm; then
7023     append config_files $TMPASM
7024     printf '' >$TMPASM
7025 fi
7026
7027 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7028
7029
7030 mkdir -p doc
7031 mkdir -p tests
7032 mkdir -p tests/api
7033 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7034
7035 print_config ARCH_   "$config_files" $ARCH_LIST
7036 print_config HAVE_   "$config_files" $HAVE_LIST
7037 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7038                                      $CONFIG_EXTRA      \
7039                                      $ALL_COMPONENTS    \
7040
7041 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7042 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7043
7044 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7045 cp_if_changed $TMPH config.h
7046 touch ffbuild/.config
7047
7048 enabled x86asm && cp_if_changed $TMPASM config.asm
7049
7050 cat > $TMPH <<EOF
7051 /* Generated by ffconf */
7052 #ifndef AVUTIL_AVCONFIG_H
7053 #define AVUTIL_AVCONFIG_H
7054 EOF
7055
7056 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7057
7058 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7059
7060 cp_if_changed $TMPH libavutil/avconfig.h
7061
7062 # generate the lists of enabled components
7063 print_enabled_components(){
7064     file=$1
7065     struct_name=$2
7066     name=$3
7067     shift 3
7068     echo "static const $struct_name * const $name[] = {" > $TMPH
7069     for c in $*; do
7070         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7071     done
7072     echo "    NULL };" >> $TMPH
7073     cp_if_changed $TMPH $file
7074 }
7075
7076 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7077 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7078
7079 if test -n "$WARNINGS"; then
7080     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7081     enabled fatal_warnings && exit 1
7082 fi
7083
7084 # Settings for pkg-config files
7085
7086 cat > ffbuild/config.sh <<EOF
7087 # Automatically generated by configure - do not modify!
7088 shared=$shared
7089 build_suffix=$build_suffix
7090 prefix=$prefix
7091 libdir=$libdir
7092 incdir=$incdir
7093 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7094 source_path=${source_path}
7095 LIBPREF=${LIBPREF}
7096 LIBSUF=${LIBSUF}
7097
7098 extralibs_avutil="$LIBRT $LIBDRM $LIBM"
7099 extralibs_avcodec="$extralibs"
7100 extralibs_avformat="$extralibs"
7101 extralibs_avdevice="$extralibs"
7102 extralibs_avfilter="$extralibs"
7103 extralibs_avresample="$LIBM"
7104 extralibs_postproc=""
7105 extralibs_swscale="$LIBM"
7106 extralibs_swresample="$LIBM $LIBSOXR"
7107 EOF
7108
7109 for lib in $LIBRARY_LIST; do
7110     lib_deps="$(eval echo \$${lib}_deps)"
7111     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7112 done