configure

   1 #!/bin/sh
   2 #
   3 # Libav 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 LIBAV, 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 Libav."
  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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --libdir=DIR             install libs in DIR [PREFIX/lib]
  85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  86   --incdir=DIR             install includes in DIR [PREFIX/include]
  87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  88
  89 Licensing options:
  90   --enable-gpl             allow use of GPL code, the resulting libs
  91                            and binaries will be under GPL [no]
  92   --enable-version3        upgrade (L)GPL to version 3 [no]
  93   --enable-nonfree         allow use of nonfree code, the resulting libs
  94                            and binaries will be unredistributable [no]
  95
  96 Configuration options:
  97   --disable-static         do not build static libraries [no]
  98   --enable-shared          build shared libraries [no]
  99   --enable-small           optimize for size instead of speed
 100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 101   --enable-gray            enable full grayscale support (slower color)
 102   --disable-swscale-alpha  disable alpha channel support in swscale
 103   --disable-all            disable building components, libraries and programs
 104
 105 Program options:
 106   --disable-programs       do not build command line programs
 107   --disable-avconv         disable avconv build
 108   --disable-avplay         disable avplay build
 109   --disable-avprobe        disable avprobe build
 110   --disable-avserver       disable avserver build
 111
 112 Component options:
 113   --disable-doc            do not build documentation
 114   --disable-avdevice       disable libavdevice build
 115   --disable-avcodec        disable libavcodec build
 116   --disable-avformat       disable libavformat build
 117   --disable-avutil         disable libavutil build
 118   --disable-swscale        disable libswscale build
 119   --disable-avfilter       disable video filter support [no]
 120   --disable-avresample     disable libavresample build [no]
 121   --disable-pthreads       disable pthreads [auto]
 122   --disable-w32threads     disable Win32 threads [auto]
 123   --disable-network        disable network support [no]
 124   --disable-dct            disable DCT code
 125   --disable-lsp            disable LSP code
 126   --disable-lzo            disable LZO decoder code
 127   --disable-mdct           disable MDCT code
 128   --disable-rdft           disable RDFT code
 129   --disable-fft            disable FFT code
 130
 131 Hardware accelerators:
 132   --enable-dxva2           enable DXVA2 code
 133   --enable-vaapi           enable VAAPI code
 134   --enable-vda             enable VDA code
 135   --enable-vdpau           enable VDPAU code
 136
 137 Individual component options:
 138   --disable-everything     disable all components listed below
 139   --disable-encoder=NAME   disable encoder NAME
 140   --enable-encoder=NAME    enable encoder NAME
 141   --disable-encoders       disable all encoders
 142   --disable-decoder=NAME   disable decoder NAME
 143   --enable-decoder=NAME    enable decoder NAME
 144   --disable-decoders       disable all decoders
 145   --disable-hwaccel=NAME   disable hwaccel NAME
 146   --enable-hwaccel=NAME    enable hwaccel NAME
 147   --disable-hwaccels       disable all hwaccels
 148   --disable-muxer=NAME     disable muxer NAME
 149   --enable-muxer=NAME      enable muxer NAME
 150   --disable-muxers         disable all muxers
 151   --disable-demuxer=NAME   disable demuxer NAME
 152   --enable-demuxer=NAME    enable demuxer NAME
 153   --disable-demuxers       disable all demuxers
 154   --enable-parser=NAME     enable parser NAME
 155   --disable-parser=NAME    disable parser NAME
 156   --disable-parsers        disable all parsers
 157   --enable-bsf=NAME        enable bitstream filter NAME
 158   --disable-bsf=NAME       disable bitstream filter NAME
 159   --disable-bsfs           disable all bitstream filters
 160   --enable-protocol=NAME   enable protocol NAME
 161   --disable-protocol=NAME  disable protocol NAME
 162   --disable-protocols      disable all protocols
 163   --enable-indev=NAME      enable input device NAME
 164   --disable-indev=NAME     disable input device NAME
 165   --disable-indevs         disable input devices
 166   --enable-outdev=NAME     enable output device NAME
 167   --disable-outdev=NAME    disable output device NAME
 168   --disable-outdevs        disable output devices
 169   --disable-devices        disable all devices
 170   --enable-filter=NAME     enable filter NAME
 171   --disable-filter=NAME    disable filter NAME
 172   --disable-filters        disable all filters
 173
 174 External library support:
 175   --enable-avisynth        enable reading of AVISynth script files [no]
 176   --enable-bzlib           enable bzlib [autodetect]
 177   --enable-frei0r          enable frei0r video filtering
 178   --enable-gnutls          enable gnutls [no]
 179   --enable-libcdio         enable audio CD grabbing with libcdio
 180   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 181                            and libraw1394 [no]
 182   --enable-libfaac         enable AAC encoding via libfaac [no]
 183   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 184   --enable-libfreetype     enable libfreetype [no]
 185   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 186   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 187   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 188   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 189   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 190   --enable-libopencv       enable video filtering via libopencv [no]
 191   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 192   --enable-libopus         enable Opus decoding via libopus [no]
 193   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 194   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 195   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 196   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 197   --enable-libtheora       enable Theora encoding via libtheora [no]
 198   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 199   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 200   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 201   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 202   --enable-libx264         enable H.264 encoding via x264 [no]
 203   --enable-libxavs         enable AVS encoding via xavs [no]
 204   --enable-libxvid         enable Xvid encoding via xvidcore,
 205                            native MPEG-4/Xvid encoder exists [no]
 206   --enable-openssl         enable openssl [no]
 207   --enable-x11grab         enable X11 grabbing [no]
 208   --enable-zlib            enable zlib [autodetect]
 209
 210 Advanced options (experts only):
 211   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 212   --enable-cross-compile   assume a cross-compiler is used
 213   --sysroot=PATH           root of cross-build tree
 214   --sysinclude=PATH        location of cross-build system headers
 215   --target-os=OS           compiler targets OS [$target_os]
 216   --target-exec=CMD        command to run executables on target
 217   --target-path=DIR        path to view of build directory on target
 218   --toolchain=NAME         set tool defaults according to NAME
 219   --nm=NM                  use nm tool
 220   --ar=AR                  use archive tool AR [$ar_default]
 221   --as=AS                  use assembler AS [$as_default]
 222   --cc=CC                  use C compiler CC [$cc_default]
 223   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 224   --ld=LD                  use linker LD
 225   --host-cc=HOSTCC         use host C compiler HOSTCC
 226   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 227   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 228   --host-ld=HOSTLD         use host linker HOSTLD
 229   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 230   --host-libs=HLIBS        use libs HLIBS when linking for host
 231   --host-os=OS             compiler host OS [$target_os]
 232   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 233   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 234   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 235   --extra-version=STRING   version string suffix []
 236   --optflags=OPTFLAGS      override optimization-related compiler flags
 237   --build-suffix=SUFFIX    library name suffix []
 238   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 239   --arch=ARCH              select architecture [$arch]
 240   --cpu=CPU                select the minimum required CPU (affects
 241                            instruction selection, may crash on older CPUs)
 242   --enable-pic             build position-independent code
 243   --enable-sram            allow use of on-chip SRAM
 244   --enable-thumb           compile for Thumb instruction set
 245   --disable-symver         disable symbol versioning
 246   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 247   --disable-safe-bitstream-reader
 248                            disable buffer boundary checking in bitreaders
 249                            (faster, but may crash)
 250   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 251   --enable-lto             use link-time optimization
 252
 253 Optimization options (experts only):
 254   --disable-asm            disable all assembler optimizations
 255   --disable-altivec        disable AltiVec optimizations
 256   --disable-amd3dnow       disable 3DNow! optimizations
 257   --disable-amd3dnowext    disable 3DNow! extended optimizations
 258   --disable-mmx            disable MMX optimizations
 259   --disable-mmxext         disable MMXEXT optimizations
 260   --disable-sse            disable SSE optimizations
 261   --disable-sse2           disable SSE2 optimizations
 262   --disable-sse3           disable SSE3 optimizations
 263   --disable-ssse3          disable SSSE3 optimizations
 264   --disable-sse4           disable SSE4 optimizations
 265   --disable-sse42          disable SSE4.2 optimizations
 266   --disable-avx            disable AVX optimizations
 267   --disable-fma4           disable FMA4 optimizations
 268   --disable-armv5te        disable armv5te optimizations
 269   --disable-armv6          disable armv6 optimizations
 270   --disable-armv6t2        disable armv6t2 optimizations
 271   --disable-vfp            disable VFP optimizations
 272   --disable-neon           disable NEON optimizations
 273   --disable-vis            disable VIS optimizations
 274   --disable-inline-asm     disable use of inline assembler
 275   --disable-yasm           disable use of yasm assembler
 276
 277 Developer options (useful when working on Libav itself):
 278   --disable-debug          disable debugging symbols
 279   --enable-debug=LEVEL     set the debug level [$debuglevel]
 280   --disable-optimizations  disable compiler optimizations
 281   --enable-extra-warnings  enable more compiler warnings
 282   --samples=PATH           location of test samples for FATE, if not set use
 283                            \$LIBAV_SAMPLES at make invocation time.
 284   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 285                            should be used only for debugging purposes)
 286   --enable-random          randomly enable/disable components
 287   --disable-random
 288   --enable-random=LIST     randomly enable/disable specific components or
 289   --disable-random=LIST    component groups. LIST is a comma-separated list
 290                            of NAME[:PROB] entries where NAME is a component
 291                            (group) and PROB the probability associated with
 292                            NAME (default 0.5).
 293   --random-seed=VALUE      seed value for --enable/disable-random
 294
 295 NOTE: Object files are built at the place where configure is launched.
 296 EOF
 297   exit 0
 298 }
 299
 300 quotes='""'
 301
 302 log(){
 303     echo "$@" >> $logfile
 304 }
 305
 306 log_file(){
 307     log BEGIN $1
 308     pr -n -t $1 >> $logfile
 309     log END $1
 310 }
 311
 312 echolog(){
 313     log "$@"
 314     echo "$@"
 315 }
 316
 317 warn(){
 318     log "WARNING: $*"
 319     WARNINGS="${WARNINGS}WARNING: $*\n"
 320 }
 321
 322 die(){
 323     echolog "$@"
 324     cat <<EOF
 325
 326 If you think configure made a mistake, make sure you are using the latest
 327 version from Git.  If the latest version fails, report the problem to the
 328 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 329 EOF
 330     if disabled logging; then
 331         cat <<EOF
 332 Rerun configure with logging enabled (do not use --disable-logging), and
 333 include the log this produces with your report.
 334 EOF
 335     else
 336         cat <<EOF
 337 Include the log file "$logfile" produced by configure as this will help
 338 solving the problem.
 339 EOF
 340     fi
 341     exit 1
 342 }
 343
 344 # Avoid locale weirdness, besides we really just want to translate ASCII.
 345 toupper(){
 346     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 347 }
 348
 349 tolower(){
 350     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 351 }
 352
 353 c_escape(){
 354     echo "$*" | sed 's/["\\]/\\\0/g'
 355 }
 356
 357 sh_quote(){
 358     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 359     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 360     echo "$v"
 361 }
 362
 363 cleanws(){
 364     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 365 }
 366
 367 filter(){
 368     pat=$1
 369     shift
 370     for v; do
 371         eval "case $v in $pat) echo $v ;; esac"
 372     done
 373 }
 374
 375 filter_out(){
 376     pat=$1
 377     shift
 378     for v; do
 379         eval "case $v in $pat) ;; *) echo $v ;; esac"
 380     done
 381 }
 382
 383 map(){
 384     m=$1
 385     shift
 386     for v; do eval $m; done
 387 }
 388
 389 add_suffix(){
 390     suffix=$1
 391     shift
 392     for v; do echo ${v}${suffix}; done
 393 }
 394
 395 set_all(){
 396     value=$1
 397     shift
 398     for var in $*; do
 399         eval $var=$value
 400     done
 401 }
 402
 403 set_weak(){
 404     value=$1
 405     shift
 406     for var; do
 407         eval : \${$var:=$value}
 408     done
 409 }
 410
 411 sanitize_var_name(){
 412     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 413 }
 414
 415 set_safe(){
 416     var=$1
 417     shift
 418     eval $(sanitize_var_name "$var")='$*'
 419 }
 420
 421 get_safe(){
 422     eval echo \$$(sanitize_var_name "$1")
 423 }
 424
 425 pushvar(){
 426     for var in $*; do
 427         eval level=\${${var}_level:=0}
 428         eval ${var}_${level}="\$$var"
 429         eval ${var}_level=$(($level+1))
 430     done
 431 }
 432
 433 popvar(){
 434     for var in $*; do
 435         eval level=\${${var}_level:-0}
 436         test $level = 0 && continue
 437         eval level=$(($level-1))
 438         eval $var="\${${var}_${level}}"
 439         eval ${var}_level=$level
 440         eval unset ${var}_${level}
 441     done
 442 }
 443
 444 enable(){
 445     set_all yes $*
 446 }
 447
 448 disable(){
 449     set_all no $*
 450 }
 451
 452 enable_weak(){
 453     set_weak yes $*
 454 }
 455
 456 disable_weak(){
 457     set_weak no $*
 458 }
 459
 460 enable_safe(){
 461     for var; do
 462         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 463     done
 464 }
 465
 466 disable_safe(){
 467     for var; do
 468         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 469     done
 470 }
 471
 472 do_enable_deep(){
 473     for var; do
 474         enabled $var && continue
 475         eval sel="\$${var}_select"
 476         eval sgs="\$${var}_suggest"
 477         pushvar var sgs
 478         enable_deep $sel
 479         popvar sgs
 480         enable_deep_weak $sgs
 481         popvar var
 482     done
 483 }
 484
 485 enable_deep(){
 486     do_enable_deep $*
 487     enable $*
 488 }
 489
 490 enable_deep_weak(){
 491     do_enable_deep $*
 492     enable_weak $*
 493 }
 494
 495 enabled(){
 496     test "${1#!}" = "$1" && op== || op=!=
 497     eval test "x\$${1#!}" $op "xyes"
 498 }
 499
 500 disabled(){
 501     test "${1#!}" = "$1" && op== || op=!=
 502     eval test "x\$${1#!}" $op "xno"
 503 }
 504
 505 enabled_all(){
 506     for opt; do
 507         enabled $opt || return 1
 508     done
 509 }
 510
 511 disabled_all(){
 512     for opt; do
 513         disabled $opt || return 1
 514     done
 515 }
 516
 517 enabled_any(){
 518     for opt; do
 519         enabled $opt && return 0
 520     done
 521 }
 522
 523 disabled_any(){
 524     for opt; do
 525         disabled $opt && return 0
 526     done
 527     return 1
 528 }
 529
 530 set_default(){
 531     for opt; do
 532         eval : \${$opt:=\$${opt}_default}
 533     done
 534 }
 535
 536 is_in(){
 537     value=$1
 538     shift
 539     for var in $*; do
 540         [ $var = $value ] && return 0
 541     done
 542     return 1
 543 }
 544
 545 do_check_deps(){
 546     for cfg; do
 547         cfg="${cfg#!}"
 548         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 549         disabled ${cfg}_checking && continue
 550         enable ${cfg}_checking
 551         append allopts $cfg
 552
 553         eval dep_all="\$${cfg}_deps"
 554         eval dep_any="\$${cfg}_deps_any"
 555         eval dep_sel="\$${cfg}_select"
 556         eval dep_sgs="\$${cfg}_suggest"
 557         eval dep_ifa="\$${cfg}_if"
 558         eval dep_ifn="\$${cfg}_if_any"
 559
 560         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 561         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 562         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 563
 564         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 565         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 566         enabled_all  $dep_all || disable $cfg
 567         enabled_any  $dep_any || disable $cfg
 568         disabled_any $dep_sel && disable $cfg
 569
 570         if enabled $cfg; then
 571             enable_deep $dep_sel
 572             enable_deep_weak $dep_sgs
 573         fi
 574
 575         disable ${cfg}_checking
 576     done
 577 }
 578
 579 check_deps(){
 580     unset allopts
 581
 582     do_check_deps "$@"
 583
 584     for cfg in $allopts; do
 585         enabled $cfg || continue
 586         eval dep_extralibs="\$${cfg}_extralibs"
 587         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 588     done
 589 }
 590
 591 print_config(){
 592     pfx=$1
 593     files=$2
 594     shift 2
 595     map 'eval echo "$v \${$v:-no}"' "$@" |
 596     awk "BEGIN { split(\"$files\", files) }
 597         {
 598             c = \"$pfx\" toupper(\$1);
 599             v = \$2;
 600             sub(/yes/, 1, v);
 601             sub(/no/,  0, v);
 602             for (f in files) {
 603                 file = files[f];
 604                 if (file ~ /\\.h\$/) {
 605                     printf(\"#define %s %d\\n\", c, v) >>file;
 606                 } else if (file ~ /\\.asm\$/) {
 607                     printf(\"%%define %s %d\\n\", c, v) >>file;
 608                 } else if (file ~ /\\.mak\$/) {
 609                     n = -v ? \"\" : \"!\";
 610                     printf(\"%s%s=yes\\n\", n, c) >>file;
 611                 }
 612             }
 613         }"
 614 }
 615
 616 print_enabled(){
 617     suf=$1
 618     shift
 619     for v; do
 620         enabled $v && printf "%s\n" ${v%$suf};
 621     done
 622 }
 623
 624 append(){
 625     var=$1
 626     shift
 627     eval "$var=\"\$$var $*\""
 628 }
 629
 630 prepend(){
 631     var=$1
 632     shift
 633     eval "$var=\"$* \$$var\""
 634 }
 635
 636 add_cppflags(){
 637     append CPPFLAGS "$@"
 638 }
 639
 640 add_cflags(){
 641     append CFLAGS $($cflags_filter "$@")
 642 }
 643
 644 add_asflags(){
 645     append ASFLAGS $($asflags_filter "$@")
 646 }
 647
 648 add_ldflags(){
 649     append LDFLAGS $($ldflags_filter "$@")
 650 }
 651
 652 add_extralibs(){
 653     prepend extralibs $($ldflags_filter "$@")
 654 }
 655
 656 add_host_cppflags(){
 657     append host_cppflags "$@"
 658 }
 659
 660 add_host_cflags(){
 661     append host_cflags $($host_cflags_filter "$@")
 662 }
 663
 664 add_host_ldflags(){
 665     append host_ldflags $($host_ldflags_filter "$@")
 666 }
 667
 668 add_compat(){
 669     append compat_objs $1
 670     shift
 671     map 'add_cppflags -D$v' "$@"
 672 }
 673
 674 check_cmd(){
 675     log "$@"
 676     "$@" >> $logfile 2>&1
 677 }
 678
 679 cc_o(){
 680     eval printf '%s\\n' $CC_O
 681 }
 682
 683 cc_e(){
 684     eval printf '%s\\n' $CC_E
 685 }
 686
 687 check_cc(){
 688     log check_cc "$@"
 689     cat > $TMPC
 690     log_file $TMPC
 691     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 692 }
 693
 694 check_cpp(){
 695     log check_cpp "$@"
 696     cat > $TMPC
 697     log_file $TMPC
 698     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 699 }
 700
 701 as_o(){
 702     eval printf '%s\\n' $AS_O
 703 }
 704
 705 check_as(){
 706     log check_as "$@"
 707     cat > $TMPS
 708     log_file $TMPS
 709     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 710 }
 711
 712 check_inline_asm(){
 713     log check_inline_asm "$@"
 714     name="$1"
 715     code="$2"
 716     shift 2
 717     disable $name
 718     check_cc "$@" <<EOF && enable $name
 719 void foo(void){ __asm__ volatile($code); }
 720 EOF
 721 }
 722
 723 check_insn(){
 724     log check_insn "$@"
 725     check_inline_asm ${1}_inline "\"$2\""
 726     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 727 }
 728
 729 check_yasm(){
 730     log check_yasm "$@"
 731     echo "$1" > $TMPS
 732     log_file $TMPS
 733     shift 1
 734     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 735 }
 736
 737 ld_o(){
 738     eval printf '%s\\n' $LD_O
 739 }
 740
 741 check_ld(){
 742     log check_ld "$@"
 743     flags=$(filter_out '-l*' "$@")
 744     libs=$(filter '-l*' "$@")
 745     check_cc $($cflags_filter $flags) || return
 746     flags=$($ldflags_filter $flags)
 747     libs=$($ldflags_filter $libs)
 748     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 749 }
 750
 751 check_code(){
 752     log check_code "$@"
 753     check=$1
 754     headers=$2
 755     code=$3
 756     shift 3
 757     {
 758         for hdr in $headers; do
 759             echo "#include <$hdr>"
 760         done
 761         echo "int main(void) { $code; return 0; }"
 762     } | check_$check "$@"
 763 }
 764
 765 check_cppflags(){
 766     log check_cppflags "$@"
 767     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 768 int x;
 769 EOF
 770 }
 771
 772 check_cflags(){
 773     log check_cflags "$@"
 774     set -- $($cflags_filter "$@")
 775     check_cc "$@" <<EOF && append CFLAGS "$@"
 776 int x;
 777 EOF
 778 }
 779
 780 test_ldflags(){
 781     log test_ldflags "$@"
 782     check_ld "$@" <<EOF
 783 int main(void){ return 0; }
 784 EOF
 785 }
 786
 787 check_ldflags(){
 788     log check_ldflags "$@"
 789     test_ldflags "$@" && add_ldflags "$@"
 790 }
 791
 792 check_header(){
 793     log check_header "$@"
 794     header=$1
 795     shift
 796     disable_safe $header
 797     check_cpp "$@" <<EOF && enable_safe $header
 798 #include <$header>
 799 int x;
 800 EOF
 801 }
 802
 803 check_func(){
 804     log check_func "$@"
 805     func=$1
 806     shift
 807     disable $func
 808     check_ld "$@" <<EOF && enable $func
 809 extern int $func();
 810 int main(void){ $func(); }
 811 EOF
 812 }
 813
 814 check_mathfunc(){
 815     log check_mathfunc "$@"
 816     func=$1
 817     narg=$2
 818     shift 2
 819     test $narg = 2 && args="f, g" || args="f"
 820     disable $func
 821     check_ld "$@" <<EOF && enable $func
 822 #include <math.h>
 823 float foo(float f, float g) { return $func($args); }
 824 int main(void){ return 0; }
 825 EOF
 826 }
 827
 828 check_func_headers(){
 829     log check_func_headers "$@"
 830     headers=$1
 831     funcs=$2
 832     shift 2
 833     {
 834         for hdr in $headers; do
 835             echo "#include <$hdr>"
 836         done
 837         for func in $funcs; do
 838             echo "long check_$func(void) { return (long) $func; }"
 839         done
 840         echo "int main(void) { return 0; }"
 841     } | check_ld "$@" && enable $funcs && enable_safe $headers
 842 }
 843
 844 check_cpp_condition(){
 845     log check_cpp_condition "$@"
 846     header=$1
 847     condition=$2
 848     shift 2
 849     check_cpp "$@" <<EOF
 850 #include <$header>
 851 #if !($condition)
 852 #error "unsatisfied condition: $condition"
 853 #endif
 854 EOF
 855 }
 856
 857 check_lib(){
 858     log check_lib "$@"
 859     header="$1"
 860     func="$2"
 861     shift 2
 862     check_header $header && check_func $func "$@" && add_extralibs "$@"
 863 }
 864
 865 check_lib2(){
 866     log check_lib2 "$@"
 867     headers="$1"
 868     funcs="$2"
 869     shift 2
 870     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 871 }
 872
 873 check_pkg_config(){
 874     log check_pkg_config "$@"
 875     pkg="$1"
 876     headers="$2"
 877     funcs="$3"
 878     shift 3
 879     $pkg_config --exists $pkg || return
 880     pkg_cflags=$($pkg_config --cflags $pkg)
 881     pkg_libs=$($pkg_config --libs $pkg)
 882     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 883         set_safe ${pkg}_cflags $pkg_cflags   &&
 884         set_safe ${pkg}_libs   $pkg_libs
 885 }
 886
 887 check_exec(){
 888     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 889 }
 890
 891 check_exec_crash(){
 892     code=$(cat)
 893
 894     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 895     # are safe but may not be available everywhere.  Thus we use
 896     # raise(SIGTERM) instead.  The check is run in a subshell so we
 897     # can redirect the "Terminated" message from the shell.  SIGBUS
 898     # is not defined by standard C so it is used conditionally.
 899
 900     (check_exec "$@") >> $logfile 2>&1 <<EOF
 901 #include <signal.h>
 902 static void sighandler(int sig){
 903     raise(SIGTERM);
 904 }
 905 int foo(void){
 906     $code
 907 }
 908 int main(void){
 909     signal(SIGILL, sighandler);
 910     signal(SIGFPE, sighandler);
 911     signal(SIGSEGV, sighandler);
 912 #ifdef SIGBUS
 913     signal(SIGBUS, sighandler);
 914 #endif
 915     foo();
 916 }
 917 EOF
 918 }
 919
 920 check_type(){
 921     log check_type "$@"
 922     headers=$1
 923     type=$2
 924     shift 2
 925     disable_safe "$type"
 926     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 927 }
 928
 929 check_struct(){
 930     log check_struct "$@"
 931     headers=$1
 932     struct=$2
 933     member=$3
 934     shift 3
 935     disable_safe "${struct}_${member}"
 936     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 937         enable_safe "${struct}_${member}"
 938 }
 939
 940 check_builtin(){
 941     log check_builtin "$@"
 942     name=$1
 943     headers=$2
 944     builtin=$3
 945     shift 3
 946     disable "$name"
 947     check_code ld "$headers" "$builtin" "$@" && enable "$name"
 948 }
 949
 950 require(){
 951     name="$1"
 952     header="$2"
 953     func="$3"
 954     shift 3
 955     check_lib $header $func "$@" || die "ERROR: $name not found"
 956 }
 957
 958 require2(){
 959     name="$1"
 960     headers="$2"
 961     func="$3"
 962     shift 3
 963     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 964 }
 965
 966 require_pkg_config(){
 967     pkg="$1"
 968     check_pkg_config "$@" || die "ERROR: $pkg not found"
 969     add_cflags    $(get_safe ${pkg}_cflags)
 970     add_extralibs $(get_safe ${pkg}_libs)
 971 }
 972
 973 hostcc_o(){
 974     eval printf '%s\\n' $HOSTCC_O
 975 }
 976
 977 check_host_cc(){
 978     log check_host_cc "$@"
 979     cat > $TMPC
 980     log_file $TMPC
 981     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
 982 }
 983
 984 check_host_cppflags(){
 985     log check_host_cppflags "$@"
 986     check_host_cc "$@" <<EOF && append host_cppflags "$@"
 987 int x;
 988 EOF
 989 }
 990
 991 check_host_cflags(){
 992     log check_host_cflags "$@"
 993     set -- $($host_cflags_filter "$@")
 994     check_host_cc "$@" <<EOF && append host_cflags "$@"
 995 int x;
 996 EOF
 997 }
 998
 999 apply(){
1000     file=$1
1001     shift
1002     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1003 }
1004
1005 cp_if_changed(){
1006     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1007     mkdir -p "$(dirname $2)"
1008     $cp_f "$1" "$2"
1009 }
1010
1011 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1012 # system-dependent things.
1013
1014 COMPONENT_LIST="
1015     bsfs
1016     decoders
1017     demuxers
1018     encoders
1019     filters
1020     hwaccels
1021     indevs
1022     muxers
1023     outdevs
1024     parsers
1025     protocols
1026 "
1027
1028 EXTERNAL_LIBRARY_LIST="
1029     avisynth
1030     bzlib
1031     frei0r
1032     gnutls
1033     libcdio
1034     libdc1394
1035     libfaac
1036     libfdk_aac
1037     libfreetype
1038     libgsm
1039     libilbc
1040     libmp3lame
1041     libopencore_amrnb
1042     libopencore_amrwb
1043     libopencv
1044     libopenjpeg
1045     libopus
1046     libpulse
1047     librtmp
1048     libschroedinger
1049     libspeex
1050     libtheora
1051     libvo_aacenc
1052     libvo_amrwbenc
1053     libvorbis
1054     libvpx
1055     libx264
1056     libxavs
1057     libxvid
1058     openssl
1059     x11grab
1060     zlib
1061 "
1062
1063 HWACCEL_LIST="
1064     dxva2
1065     vaapi
1066     vda
1067     vdpau
1068 "
1069 LIBRARY_LIST="
1070     avcodec
1071     avdevice
1072     avfilter
1073     avformat
1074     avresample
1075     avutil
1076     swscale
1077 "
1078
1079 PROGRAM_LIST="
1080     avconv
1081     avplay
1082     avprobe
1083     avserver
1084 "
1085
1086 CONFIG_LIST="
1087     $COMPONENT_LIST
1088     $EXTERNAL_LIBRARY_LIST
1089     $HWACCEL_LIST
1090     $LIBRARY_LIST
1091     $PROGRAM_LIST
1092     dct
1093     doc
1094     fft
1095     gpl
1096     gray
1097     hardcoded_tables
1098     lsp
1099     lzo
1100     mdct
1101     memalign_hack
1102     network
1103     nonfree
1104     pic
1105     rdft
1106     runtime_cpudetect
1107     safe_bitstream_reader
1108     shared
1109     small
1110     sram
1111     static
1112     swscale_alpha
1113     thumb
1114     version3
1115     xmm_clobber_test
1116 "
1117
1118 THREADS_LIST='
1119     pthreads
1120     w32threads
1121 '
1122
1123 ARCH_LIST='
1124     aarch64
1125     alpha
1126     arm
1127     avr32
1128     avr32_ap
1129     avr32_uc
1130     bfin
1131     ia64
1132     m68k
1133     mips
1134     mips64
1135     parisc
1136     ppc
1137     ppc64
1138     s390
1139     sh4
1140     sparc
1141     sparc64
1142     tilegx
1143     tilepro
1144     tomi
1145     x86
1146     x86_32
1147     x86_64
1148 '
1149
1150 ARCH_EXT_LIST_ARM='
1151     armv5te
1152     armv6
1153     armv6t2
1154     neon
1155     vfp
1156     vfpv3
1157 '
1158
1159 ARCH_EXT_LIST_X86='
1160     amd3dnow
1161     amd3dnowext
1162     avx
1163     fma4
1164     mmx
1165     mmxext
1166     sse
1167     sse2
1168     sse3
1169     sse4
1170     sse42
1171     ssse3
1172 '
1173
1174 ARCH_EXT_LIST="
1175     $ARCH_EXT_LIST_ARM
1176     $ARCH_EXT_LIST_X86
1177     altivec
1178     ppc4xx
1179     vis
1180 "
1181
1182 HAVE_LIST_CMDLINE='
1183     inline_asm
1184     symver
1185     yasm
1186 '
1187
1188 HAVE_LIST_PUB='
1189     bigendian
1190     fast_unaligned
1191 '
1192
1193 MATH_FUNCS="
1194     atanf
1195     atan2f
1196     cbrtf
1197     cosf
1198     exp2
1199     exp2f
1200     expf
1201     isinf
1202     isnan
1203     ldexpf
1204     llrint
1205     llrintf
1206     log2
1207     log2f
1208     log10f
1209     lrint
1210     lrintf
1211     powf
1212     rint
1213     round
1214     roundf
1215     sinf
1216     trunc
1217     truncf
1218 "
1219
1220 HAVE_LIST="
1221     $ARCH_EXT_LIST
1222     $(add_suffix _external $ARCH_EXT_LIST)
1223     $(add_suffix _inline   $ARCH_EXT_LIST)
1224     $HAVE_LIST_CMDLINE
1225     $HAVE_LIST_PUB
1226     $THREADS_LIST
1227     $MATH_FUNCS
1228     aligned_malloc
1229     aligned_stack
1230     alsa_asoundlib_h
1231     altivec_h
1232     arpa_inet_h
1233     asm_mod_q
1234     asm_mod_y
1235     attribute_may_alias
1236     attribute_packed
1237     cdio_paranoia_h
1238     cdio_paranoia_paranoia_h
1239     closesocket
1240     cmov
1241     CommandLineToArgvW
1242     cpunop
1243     CryptGenRandom
1244     dcbzl
1245     dev_bktr_ioctl_bt848_h
1246     dev_bktr_ioctl_meteor_h
1247     dev_ic_bt8xx_h
1248     dev_video_bktr_ioctl_bt848_h
1249     dev_video_meteor_ioctl_meteor_h
1250     direct_h
1251     dlfcn_h
1252     dlopen
1253     dos_paths
1254     dxva_h
1255     ebp_available
1256     ebx_available
1257     fast_64bit
1258     fast_clz
1259     fast_cmov
1260     fcntl
1261     fork
1262     getaddrinfo
1263     gethrtime
1264     getopt
1265     GetProcessAffinityMask
1266     GetProcessMemoryInfo
1267     GetProcessTimes
1268     GetSystemTimeAsFileTime
1269     getrusage
1270     getservbyport
1271     gettimeofday
1272     gnu_as
1273     gsm_h
1274     ibm_asm
1275     inet_aton
1276     io_h
1277     isatty
1278     jack_port_get_latency_range
1279     ldbrx
1280     libdc1394_1
1281     libdc1394_2
1282     local_aligned_16
1283     local_aligned_8
1284     localtime_r
1285     loongson
1286     machine_ioctl_bt848_h
1287     machine_ioctl_meteor_h
1288     machine_rw_barrier
1289     malloc_h
1290     MapViewOfFile
1291     memalign
1292     MemoryBarrier
1293     mkstemp
1294     mm_empty
1295     mmap
1296     mprotect
1297     msvcrt
1298     nanosleep
1299     poll_h
1300     posix_memalign
1301     rdtsc
1302     sched_getaffinity
1303     sdl
1304     sdl_video_size
1305     SetConsoleTextAttribute
1306     setmode
1307     setrlimit
1308     Sleep
1309     sndio_h
1310     socklen_t
1311     soundcard_h
1312     strerror_r
1313     strptime
1314     strtok_r
1315     struct_addrinfo
1316     struct_group_source_req
1317     struct_ip_mreq_source
1318     struct_ipv6_mreq
1319     struct_pollfd
1320     struct_rusage_ru_maxrss
1321     struct_sockaddr_in6
1322     struct_sockaddr_sa_len
1323     struct_sockaddr_storage
1324     struct_v4l2_frmivalenum_discrete
1325     symver_asm_label
1326     symver_gnu_asm
1327     sync_synchronize
1328     sysconf
1329     sysctl
1330     sys_mman_h
1331     sys_param_h
1332     sys_resource_h
1333     sys_select_h
1334     sys_soundcard_h
1335     sys_time_h
1336     sys_videoio_h
1337     threads
1338     unistd_h
1339     usleep
1340     vfp_args
1341     VirtualAlloc
1342     windows_h
1343     winsock2_h
1344     xform_asm
1345     xmm_clobbers
1346 "
1347
1348 # options emitted with CONFIG_ prefix but not available on the command line
1349 CONFIG_EXTRA="
1350     aandcttables
1351     ac3dsp
1352     audio_frame_queue
1353     error_resilience
1354     gcrypt
1355     golomb
1356     gplv3
1357     h264chroma
1358     h264dsp
1359     h264pred
1360     h264qpel
1361     huffman
1362     lgplv3
1363     lpc
1364     mpegaudio
1365     mpegaudiodsp
1366     mpegvideo
1367     mpegvideoenc
1368     nettle
1369     rangecoder
1370     rtpdec
1371     rtpenc_chain
1372     sinewin
1373     videodsp
1374     vp3dsp
1375 "
1376
1377 CMDLINE_SELECT="
1378     $ARCH_EXT_LIST
1379     $CONFIG_LIST
1380     $HAVE_LIST_CMDLINE
1381     $THREADS_LIST
1382     asm
1383     cross_compile
1384     debug
1385     extra_warnings
1386     logging
1387     lto
1388     optimizations
1389 "
1390
1391 PATHS_LIST='
1392     bindir
1393     datadir
1394     incdir
1395     libdir
1396     mandir
1397     prefix
1398     shlibdir
1399 '
1400
1401 CMDLINE_SET="
1402     $PATHS_LIST
1403     ar
1404     arch
1405     as
1406     build_suffix
1407     cc
1408     cpu
1409     cross_prefix
1410     dep_cc
1411     extra_version
1412     host_cc
1413     host_cflags
1414     host_ld
1415     host_ldflags
1416     host_libs
1417     host_os
1418     ld
1419     logfile
1420     malloc_prefix
1421     nm
1422     optflags
1423     pkg_config
1424     random_seed
1425     samples
1426     sysinclude
1427     sysroot
1428     target_exec
1429     target_os
1430     target_path
1431     toolchain
1432 "
1433
1434 CMDLINE_APPEND="
1435     extra_cflags
1436     host_cppflags
1437 "
1438
1439 # code dependency declarations
1440
1441 # architecture extensions
1442
1443 armv5te_deps="arm"
1444 armv6_deps="arm"
1445 armv6t2_deps="arm"
1446 neon_deps="arm"
1447 vfp_deps="arm"
1448 vfpv3_deps="vfp"
1449
1450 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1451
1452 altivec_deps="ppc"
1453 ppc4xx_deps="ppc"
1454
1455 vis_deps="sparc"
1456
1457 x86_64_suggest="cmov fast_cmov"
1458
1459 amd3dnow_deps="mmx"
1460 amd3dnowext_deps="amd3dnow"
1461 mmx_deps="x86"
1462 mmxext_deps="mmx"
1463 sse_deps="mmxext"
1464 sse2_deps="sse"
1465 sse3_deps="sse2"
1466 ssse3_deps="sse3"
1467 sse4_deps="ssse3"
1468 sse42_deps="sse4"
1469 avx_deps="sse42"
1470 fma4_deps="avx"
1471
1472 mmx_external_deps="yasm"
1473 mmx_inline_deps="inline_asm"
1474 mmx_suggest="mmx_external mmx_inline"
1475
1476 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1477     eval dep=\$${ext}_deps
1478     eval ${ext}_external_deps='"${dep}_external"'
1479     eval ${ext}_inline_deps='"${dep}_inline"'
1480     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1481 done
1482
1483 aligned_stack_if_any="ppc x86"
1484 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1485 fast_clz_if_any="alpha avr32 mips ppc x86"
1486 fast_unaligned_if_any="ppc x86"
1487
1488 inline_asm_deps="!tms470"
1489 need_memalign="altivec neon sse"
1490
1491 symver_if_any="symver_asm_label symver_gnu_asm"
1492
1493 log2_deps="!msvcrt"
1494
1495 # subsystems
1496 dct_select="rdft"
1497 mdct_select="fft"
1498 rdft_select="fft"
1499 mpegaudio_select="mpegaudiodsp"
1500 mpegaudiodsp_select="dct"
1501 mpegvideo_select="videodsp"
1502 mpegvideoenc_select="mpegvideo"
1503
1504 # decoders / encoders
1505 aac_decoder_select="mdct sinewin"
1506 aac_encoder_select="audio_frame_queue mdct sinewin"
1507 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1508 ac3_decoder_select="mdct ac3dsp ac3_parser"
1509 ac3_encoder_select="mdct ac3dsp"
1510 ac3_fixed_encoder_select="mdct ac3dsp"
1511 alac_encoder_select="lpc"
1512 amrnb_decoder_select="lsp"
1513 amrwb_decoder_select="lsp"
1514 atrac1_decoder_select="mdct sinewin"
1515 atrac3_decoder_select="mdct"
1516 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1517 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1518 cavs_decoder_select="golomb h264chroma mpegvideo videodsp"
1519 comfortnoise_encoder_select="lpc"
1520 cook_decoder_select="mdct sinewin"
1521 cscd_decoder_select="lzo"
1522 cscd_decoder_suggest="zlib"
1523 dca_decoder_select="mdct"
1524 dnxhd_encoder_select="aandcttables mpegvideoenc"
1525 dxa_decoder_select="zlib"
1526 eac3_decoder_select="ac3_decoder"
1527 eac3_encoder_select="ac3_encoder"
1528 eamad_decoder_select="aandcttables mpegvideo"
1529 eatgq_decoder_select="aandcttables"
1530 eatqi_decoder_select="aandcttables mpegvideo"
1531 ffv1_decoder_select="golomb rangecoder"
1532 ffv1_encoder_select="rangecoder"
1533 ffvhuff_encoder_select="huffman"
1534 flac_decoder_select="golomb"
1535 flac_encoder_select="golomb lpc"
1536 flashsv_decoder_select="zlib"
1537 flashsv_encoder_select="zlib"
1538 flashsv2_decoder_select="zlib"
1539 flv_decoder_select="h263_decoder"
1540 flv_encoder_select="h263_encoder"
1541 fraps_decoder_select="huffman"
1542 h261_decoder_select="error_resilience mpegvideo"
1543 h261_encoder_select="aandcttables mpegvideoenc"
1544 h263_decoder_select="error_resilience h263_parser mpegvideo"
1545 h263_encoder_select="aandcttables mpegvideoenc"
1546 h263i_decoder_select="h263_decoder"
1547 h263p_encoder_select="h263_encoder"
1548 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
1549 huffyuv_encoder_select="huffman"
1550 iac_decoder_select="fft mdct sinewin"
1551 imc_decoder_select="fft mdct sinewin"
1552 jpegls_decoder_select="golomb"
1553 jpegls_encoder_select="golomb"
1554 ljpeg_encoder_select="aandcttables mpegvideoenc"
1555 loco_decoder_select="golomb"
1556 mdec_decoder_select="error_resilience mpegvideo"
1557 mjpeg_encoder_select="aandcttables mpegvideoenc"
1558 mlp_decoder_select="mlp_parser"
1559 mp1_decoder_select="mpegaudio"
1560 mp1float_decoder_select="mpegaudio"
1561 mp2_decoder_select="mpegaudio"
1562 mp2float_decoder_select="mpegaudio"
1563 mp3_decoder_select="mpegaudio"
1564 mp3adu_decoder_select="mpegaudio"
1565 mp3adufloat_decoder_select="mpegaudio"
1566 mp3float_decoder_select="mpegaudio"
1567 mp3on4_decoder_select="mpegaudio"
1568 mp3on4float_decoder_select="mpegaudio"
1569 mpc7_decoder_select="mpegaudiodsp"
1570 mpc8_decoder_select="mpegaudiodsp"
1571 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1572 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1573 mpeg1video_decoder_select="error_resilience mpegvideo"
1574 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1575 mpeg2video_decoder_select="error_resilience mpegvideo"
1576 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1577 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1578 mpeg4_encoder_select="h263_encoder"
1579 msmpeg4v1_decoder_select="h263_decoder"
1580 msmpeg4v1_encoder_select="h263_encoder"
1581 msmpeg4v2_decoder_select="h263_decoder"
1582 msmpeg4v2_encoder_select="h263_encoder"
1583 msmpeg4v3_decoder_select="h263_decoder"
1584 msmpeg4v3_encoder_select="h263_encoder"
1585 mss2_decoder_select="error_resilience vc1_decoder"
1586 nellymoser_decoder_select="mdct sinewin"
1587 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1588 nuv_decoder_select="lzo"
1589 png_decoder_select="zlib"
1590 png_encoder_select="zlib"
1591 qcelp_decoder_select="lsp"
1592 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1593 ra_144_encoder_select="audio_frame_queue lpc"
1594 ralf_decoder_select="golomb"
1595 rv10_decoder_select="error_resilience h263_decoder"
1596 rv10_encoder_select="h263_encoder"
1597 rv20_decoder_select="error_resilience h263_decoder"
1598 rv20_encoder_select="h263_encoder"
1599 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1600 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1601 shorten_decoder_select="golomb"
1602 sipr_decoder_select="lsp"
1603 svq1_decoder_select="mpegvideo"
1604 svq1_encoder_select="aandcttables mpegvideoenc"
1605 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1606 svq3_decoder_suggest="zlib"
1607 theora_decoder_select="vp3_decoder"
1608 tiff_decoder_suggest="zlib"
1609 tiff_encoder_suggest="zlib"
1610 truehd_decoder_select="mlp_decoder"
1611 tscc_decoder_select="zlib"
1612 twinvq_decoder_select="mdct lsp sinewin"
1613 utvideo_encoder_select="huffman"
1614 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1615 vc1image_decoder_select="vc1_decoder"
1616 vorbis_decoder_select="mdct"
1617 vorbis_encoder_select="mdct"
1618 vp3_decoder_select="vp3dsp videodsp"
1619 vp5_decoder_select="h264chroma videodsp vp3dsp"
1620 vp6_decoder_select="h264chroma huffman videodsp vp3dsp"
1621 vp6a_decoder_select="vp6_decoder"
1622 vp6f_decoder_select="vp6_decoder"
1623 vp8_decoder_select="h264pred videodsp"
1624 wmapro_decoder_select="mdct sinewin"
1625 wmav1_decoder_select="mdct sinewin"
1626 wmav1_encoder_select="mdct sinewin"
1627 wmav2_decoder_select="mdct sinewin"
1628 wmav2_encoder_select="mdct sinewin"
1629 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1630 wmv1_decoder_select="h263_decoder"
1631 wmv1_encoder_select="h263_encoder"
1632 wmv2_decoder_select="h263_decoder videodsp"
1633 wmv2_encoder_select="h263_encoder"
1634 wmv3_decoder_select="vc1_decoder"
1635 wmv3image_decoder_select="wmv3_decoder"
1636 zerocodec_decoder_select="zlib"
1637 zlib_decoder_select="zlib"
1638 zlib_encoder_select="zlib"
1639 zmbv_decoder_select="zlib"
1640 zmbv_encoder_select="zlib"
1641
1642 # hardware accelerators
1643 dxva2_deps="dxva2api_h"
1644 vaapi_deps="va_va_h"
1645 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1646 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1647 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1648
1649 h263_vaapi_hwaccel_deps="vaapi"
1650 h263_vaapi_hwaccel_select="h263_decoder"
1651 h263_vdpau_hwaccel_deps="vdpau"
1652 h263_vdpau_hwaccel_select="h263_decoder"
1653 h264_dxva2_hwaccel_deps="dxva2"
1654 h264_dxva2_hwaccel_select="h264_decoder"
1655 h264_vaapi_hwaccel_deps="vaapi"
1656 h264_vaapi_hwaccel_select="h264_decoder"
1657 h264_vda_hwaccel_deps="vda"
1658 h264_vda_hwaccel_select="h264_decoder"
1659 h264_vdpau_decoder_deps="vdpau"
1660 h264_vdpau_decoder_select="h264_decoder"
1661 h264_vdpau_hwaccel_deps="vdpau"
1662 h264_vdpau_hwaccel_select="h264_decoder"
1663 mpeg_vdpau_decoder_deps="vdpau"
1664 mpeg_vdpau_decoder_select="mpegvideo_decoder"
1665 mpeg1_vdpau_decoder_deps="vdpau"
1666 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1667 mpeg1_vdpau_hwaccel_deps="vdpau"
1668 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1669 mpeg2_dxva2_hwaccel_deps="dxva2"
1670 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1671 mpeg2_vaapi_hwaccel_deps="vaapi"
1672 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1673 mpeg2_vdpau_hwaccel_deps="vdpau"
1674 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1675 mpeg4_vaapi_hwaccel_deps="vaapi"
1676 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1677 mpeg4_vdpau_decoder_deps="vdpau"
1678 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1679 mpeg4_vdpau_hwaccel_deps="vdpau"
1680 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1681 vc1_dxva2_hwaccel_deps="dxva2"
1682 vc1_dxva2_hwaccel_select="vc1_decoder"
1683 vc1_vaapi_hwaccel_deps="vaapi"
1684 vc1_vaapi_hwaccel_select="vc1_decoder"
1685 vc1_vdpau_decoder_deps="vdpau"
1686 vc1_vdpau_decoder_select="vc1_decoder"
1687 vc1_vdpau_hwaccel_deps="vdpau"
1688 vc1_vdpau_hwaccel_select="vc1_decoder"
1689 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1690 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1691 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1692 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1693
1694 # parsers
1695 h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
1696 mpeg4video_parser_select="error_resilience mpegvideo"
1697 mpegvideo_parser_select="error_resilience mpegvideo"
1698 vc1_parser_select="mpegvideo"
1699
1700 # external libraries
1701 libfaac_encoder_deps="libfaac"
1702 libfaac_encoder_select="audio_frame_queue"
1703 libfdk_aac_encoder_deps="libfdk_aac"
1704 libfdk_aac_encoder_select="audio_frame_queue"
1705 libgsm_decoder_deps="libgsm"
1706 libgsm_encoder_deps="libgsm"
1707 libgsm_ms_decoder_deps="libgsm"
1708 libgsm_ms_encoder_deps="libgsm"
1709 libilbc_decoder_deps="libilbc"
1710 libilbc_encoder_deps="libilbc"
1711 libmp3lame_encoder_deps="libmp3lame"
1712 libmp3lame_encoder_select="audio_frame_queue"
1713 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1714 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1715 libopencore_amrnb_encoder_select="audio_frame_queue"
1716 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1717 libopenjpeg_decoder_deps="libopenjpeg"
1718 libopenjpeg_encoder_deps="libopenjpeg"
1719 libopus_decoder_deps="libopus"
1720 libopus_encoder_deps="libopus"
1721 libopus_encoder_select="audio_frame_queue"
1722 libschroedinger_decoder_deps="libschroedinger"
1723 libschroedinger_encoder_deps="libschroedinger"
1724 libspeex_decoder_deps="libspeex"
1725 libspeex_encoder_deps="libspeex"
1726 libspeex_encoder_select="audio_frame_queue"
1727 libtheora_encoder_deps="libtheora"
1728 libvo_aacenc_encoder_deps="libvo_aacenc"
1729 libvo_aacenc_encoder_select="audio_frame_queue"
1730 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1731 libvorbis_encoder_deps="libvorbis"
1732 libvorbis_encoder_select="audio_frame_queue"
1733 libvpx_vp8_decoder_deps="libvpx"
1734 libvpx_vp8_encoder_deps="libvpx"
1735 libvpx_vp9_decoder_deps="libvpx"
1736 libvpx_vp9_encoder_deps="libvpx"
1737 libx264_encoder_deps="libx264"
1738 libxavs_encoder_deps="libxavs"
1739 libxvid_encoder_deps="libxvid"
1740
1741 # demuxers / muxers
1742 ac3_demuxer_select="ac3_parser"
1743 asf_stream_muxer_select="asf_muxer"
1744 avisynth_demuxer_deps="avisynth"
1745 dirac_demuxer_select="dirac_parser"
1746 eac3_demuxer_select="ac3_parser"
1747 flac_demuxer_select="flac_parser"
1748 ipod_muxer_select="mov_muxer"
1749 ismv_muxer_select="mov_muxer"
1750 matroska_audio_muxer_select="matroska_muxer"
1751 matroska_demuxer_suggest="bzlib lzo zlib"
1752 mov_demuxer_suggest="zlib"
1753 mov_muxer_select="rtpenc_chain"
1754 mp3_demuxer_select="mpegaudio_parser"
1755 mp4_muxer_select="mov_muxer"
1756 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1757 mpegtsraw_demuxer_select="mpegts_demuxer"
1758 mxf_d10_muxer_select="mxf_muxer"
1759 ogg_demuxer_select="golomb"
1760 psp_muxer_select="mov_muxer"
1761 rtp_demuxer_select="sdp_demuxer"
1762 rtp_muxer_select="mpegvideo"
1763 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1764 rtsp_demuxer_select="http_protocol rtpdec"
1765 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1766 sap_demuxer_select="sdp_demuxer"
1767 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1768 sdp_demuxer_select="rtpdec"
1769 smoothstreaming_muxer_select="ismv_muxer"
1770 spdif_muxer_select="aac_parser"
1771 tak_demuxer_select="tak_parser"
1772 tg2_muxer_select="mov_muxer"
1773 tgp_muxer_select="mov_muxer"
1774 w64_demuxer_deps="wav_demuxer"
1775
1776 # indevs / outdevs
1777 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1778 alsa_outdev_deps="alsa_asoundlib_h"
1779 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1780 dv1394_indev_deps="dv1394 dv_demuxer"
1781 fbdev_indev_deps="linux_fb_h"
1782 jack_indev_deps="jack_jack_h"
1783 libcdio_indev_deps="libcdio"
1784 libdc1394_indev_deps="libdc1394"
1785 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1786 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1787 pulse_indev_deps="libpulse"
1788 sndio_indev_deps="sndio_h"
1789 sndio_outdev_deps="sndio_h"
1790 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1791 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1792 vfwcap_indev_extralibs="-lavicap32"
1793 x11grab_indev_deps="x11grab XShmCreateImage"
1794
1795 # protocols
1796 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1797 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1798 ffrtmpcrypt_protocol_select="tcp_protocol"
1799 ffrtmphttp_protocol_deps="!librtmp_protocol"
1800 ffrtmphttp_protocol_select="http_protocol"
1801 gopher_protocol_select="network"
1802 httpproxy_protocol_select="tcp_protocol"
1803 http_protocol_select="tcp_protocol"
1804 https_protocol_select="tls_protocol"
1805 librtmp_protocol_deps="librtmp"
1806 librtmpe_protocol_deps="librtmp"
1807 librtmps_protocol_deps="librtmp"
1808 librtmpt_protocol_deps="librtmp"
1809 librtmpte_protocol_deps="librtmp"
1810 mmsh_protocol_select="http_protocol"
1811 mmst_protocol_select="network"
1812 rtmp_protocol_deps="!librtmp_protocol"
1813 rtmp_protocol_select="tcp_protocol"
1814 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1815 rtmps_protocol_deps="!librtmp_protocol"
1816 rtmps_protocol_select="tls_protocol"
1817 rtmpt_protocol_select="ffrtmphttp_protocol"
1818 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1819 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1820 rtp_protocol_select="udp_protocol"
1821 sctp_protocol_deps="struct_sctp_event_subscribe"
1822 sctp_protocol_select="network"
1823 srtp_protocol_select="rtp_protocol"
1824 tcp_protocol_select="network"
1825 tls_protocol_deps_any="openssl gnutls"
1826 tls_protocol_select="tcp_protocol"
1827 udp_protocol_select="network"
1828
1829 # filters
1830 blackframe_filter_deps="gpl"
1831 boxblur_filter_deps="gpl"
1832 cropdetect_filter_deps="gpl"
1833 delogo_filter_deps="gpl"
1834 drawtext_filter_deps="libfreetype"
1835 frei0r_filter_deps="frei0r dlopen strtok_r"
1836 frei0r_filter_extralibs='$ldl'
1837 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1838 frei0r_src_filter_extralibs='$ldl'
1839 hqdn3d_filter_deps="gpl"
1840 resample_filter_deps="avresample"
1841 ocv_filter_deps="libopencv"
1842 scale_filter_deps="swscale"
1843 yadif_filter_deps="gpl"
1844
1845 # libraries
1846 avcodec_deps="avutil"
1847 avdevice_deps="avutil avcodec avformat"
1848 avfilter_deps="avutil"
1849 avformat_deps="avutil avcodec"
1850 avresample_deps="avutil"
1851 swscale_deps="avutil"
1852
1853 # programs
1854 avconv_deps="avcodec avfilter avformat avresample swscale"
1855 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1856                fps_filter null_filter resample_filter scale_filter
1857                setpts_filter"
1858 avplay_deps="avcodec avformat avresample swscale sdl"
1859 avplay_select="rdft"
1860 avprobe_deps="avcodec avformat"
1861 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1862 avserver_extralibs='$ldl'
1863
1864 doc_deps="texi2html"
1865
1866 # default parameters
1867
1868 logfile="config.log"
1869
1870 # installation paths
1871 prefix_default="/usr/local"
1872 bindir_default='${prefix}/bin'
1873 datadir_default='${prefix}/share/avconv'
1874 incdir_default='${prefix}/include'
1875 libdir_default='${prefix}/lib'
1876 mandir_default='${prefix}/share/man'
1877 shlibdir_default="$libdir_default"
1878
1879 # toolchain
1880 ar_default="ar"
1881 cc_default="gcc"
1882 host_cc_default="gcc"
1883 cp_f="cp -f"
1884 ln_s="ln -s -f"
1885 nm_default="nm -g"
1886 objformat="elf"
1887 pkg_config_default=pkg-config
1888 ranlib="ranlib"
1889 yasmexe="yasm"
1890
1891 nogas=":"
1892
1893 # machine
1894 arch_default=$(uname -m)
1895 cpu="generic"
1896
1897 # OS
1898 target_os_default=$(tolower $(uname -s))
1899 host_os=$target_os_default
1900
1901 # configurable options
1902 enable $LIBRARY_LIST $PROGRAM_LIST
1903
1904 enable asm
1905 enable debug
1906 enable doc
1907 enable optimizations
1908 enable safe_bitstream_reader
1909 enable static
1910 enable swscale_alpha
1911
1912 # build settings
1913 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1914 AVSERVERLDFLAGS=-Wl,-E
1915 LIBPREF="lib"
1916 LIBSUF=".a"
1917 FULLNAME='$(NAME)$(BUILDSUF)'
1918 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1919 SLIBPREF="lib"
1920 SLIBSUF=".so"
1921 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1922 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1923 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1924 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1925 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1926 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1927
1928 asflags_filter=echo
1929 cflags_filter=echo
1930 ldflags_filter=echo
1931
1932 AS_C='-c'
1933 AS_O='-o $@'
1934 CC_C='-c'
1935 CC_E='-E -o $@'
1936 CC_O='-o $@'
1937 LD_O='-o $@'
1938 LD_LIB='-l%'
1939 LD_PATH='-L'
1940 HOSTCC_C='-c'
1941 HOSTCC_O='-o $@'
1942 HOSTLD_O='-o $@'
1943
1944 host_cflags='-O2 -g'
1945 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1946 host_libs='-lm'
1947 host_cflags_filter=echo
1948 host_ldflags_filter=echo
1949
1950 target_path='$(CURDIR)'
1951
1952 # since the object filename is not given with the -MM flag, the compiler
1953 # is only able to print the basename, and we must add the path ourselves
1954 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1955 DEPFLAGS='-MM'
1956
1957 # find source path
1958 if test -f configure; then
1959     source_path=.
1960 else
1961     source_path=$(cd $(dirname "$0"); pwd)
1962     echo "$source_path" | grep -q '[[:blank:]]' &&
1963         die "Out of tree builds are impossible with whitespace in source path."
1964     test -e "$source_path/config.h" &&
1965         die "Out of tree builds are impossible with config.h in source dir."
1966 fi
1967
1968 for v in "$@"; do
1969     r=${v#*=}
1970     l=${v%"$r"}
1971     r=$(sh_quote "$r")
1972     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1973 done
1974
1975 find_things(){
1976     thing=$1
1977     pattern=$2
1978     file=$source_path/$3
1979     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1980 }
1981
1982 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1983 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1984 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1985 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1986 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1987 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1988 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1989 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1990 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1991 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1992 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1993
1994 ALL_COMPONENTS="
1995     $BSF_LIST
1996     $DECODER_LIST
1997     $DEMUXER_LIST
1998     $ENCODER_LIST
1999     $FILTER_LIST
2000     $HWACCEL_LIST
2001     $INDEV_LIST
2002     $MUXER_LIST
2003     $OUTDEV_LIST
2004     $PARSER_LIST
2005     $PROTOCOL_LIST
2006 "
2007
2008 for n in $COMPONENT_LIST; do
2009     v=$(toupper ${n%s})_LIST
2010     eval enable \$$v
2011     eval ${n}_if_any="\$$v"
2012 done
2013
2014 enable $ARCH_EXT_LIST
2015
2016 die_unknown(){
2017     echo "Unknown option \"$1\"."
2018     echo "See $0 --help for available options."
2019     exit 1
2020 }
2021
2022 print_3_columns() {
2023     cat | tr ' ' '\n' | sort | pr -r -3 -t
2024 }
2025
2026 show_list() {
2027     suffix=_$1
2028     shift
2029     echo $* | sed s/$suffix//g | print_3_columns
2030     exit 0
2031 }
2032
2033 rand_list(){
2034     IFS=', '
2035     set -- $*
2036     unset IFS
2037     for thing; do
2038         comp=${thing%:*}
2039         prob=${thing#$comp}
2040         prob=${prob#:}
2041         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2042         echo "prob ${prob:-0.5}"
2043         printf '%s\n' $comp
2044     done
2045 }
2046
2047 do_random(){
2048     action=$1
2049     shift
2050     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2051     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2052 }
2053
2054 for opt do
2055     optval="${opt#*=}"
2056     case "$opt" in
2057         --extra-ldflags=*)
2058             add_ldflags $optval
2059         ;;
2060         --extra-libs=*)
2061             add_extralibs $optval
2062         ;;
2063         --disable-devices)
2064             disable $INDEV_LIST $OUTDEV_LIST
2065         ;;
2066         --enable-debug=*)
2067             debuglevel="$optval"
2068         ;;
2069         --disable-programs)
2070             disable $PROGRAM_LIST
2071         ;;
2072         --disable-everything)
2073             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2074         ;;
2075         --disable-all)
2076             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2077             disable $LIBRARY_LIST $PROGRAM_LIST doc
2078         ;;
2079         --enable-random|--disable-random)
2080             action=${opt%%-random}
2081             do_random ${action#--} $COMPONENT_LIST
2082         ;;
2083         --enable-random=*|--disable-random=*)
2084             action=${opt%%-random=*}
2085             do_random ${action#--} $optval
2086         ;;
2087         --enable-*=*|--disable-*=*)
2088             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2089             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2090             eval list=\$$(toupper $thing)_LIST
2091             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2092             $action $(filter "$name" $list)
2093         ;;
2094         --enable-?*|--disable-?*)
2095             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2096             if is_in $option $COMPONENT_LIST; then
2097                 test $action = disable && action=unset
2098                 eval $action \$$(toupper ${option%s})_LIST
2099             elif is_in $option $CMDLINE_SELECT; then
2100                 $action $option
2101             else
2102                 die_unknown $opt
2103             fi
2104         ;;
2105         --list-*)
2106             NAME="${opt#--list-}"
2107             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2108             NAME=${NAME%s}
2109             eval show_list $NAME \$$(toupper $NAME)_LIST
2110         ;;
2111         --help|-h) show_help
2112         ;;
2113         *)
2114             optname="${opt%%=*}"
2115             optname="${optname#--}"
2116             optname=$(echo "$optname" | sed 's/-/_/g')
2117             if is_in $optname $CMDLINE_SET; then
2118                 eval $optname='$optval'
2119             elif is_in $optname $CMDLINE_APPEND; then
2120                 append $optname "$optval"
2121             else
2122                 die_unknown $opt
2123             fi
2124         ;;
2125     esac
2126 done
2127
2128 disabled logging && logfile=/dev/null
2129
2130 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2131 set >> $logfile
2132
2133 test -n "$cross_prefix" && enable cross_compile
2134
2135 if enabled cross_compile; then
2136     test -n "$arch" && test -n "$target_os" ||
2137         die "Must specify target arch and OS when cross-compiling"
2138 fi
2139
2140 ar_default="${cross_prefix}${ar_default}"
2141 cc_default="${cross_prefix}${cc_default}"
2142 nm_default="${cross_prefix}${nm_default}"
2143 pkg_config_default="${cross_prefix}${pkg_config_default}"
2144 ranlib="${cross_prefix}${ranlib}"
2145
2146 sysinclude_default="${sysroot}/usr/include"
2147
2148 case "$toolchain" in
2149     clang-asan)
2150         cc_default="clang"
2151         add_cflags  -faddress-sanitizer
2152         add_ldflags -faddress-sanitizer
2153     ;;
2154     clang-tsan)
2155         cc_default="clang"
2156         add_cflags  -fthread-sanitizer
2157         add_ldflags -fthread-sanitizer
2158     ;;
2159     msvc)
2160         cc_default="c99wrap cl"
2161         ld_default="c99wrap link"
2162         nm_default="dumpbin -symbols"
2163         ar_default="lib"
2164         target_os_default="win32"
2165     ;;
2166     ?*)
2167         die "Unknown toolchain $toolchain"
2168     ;;
2169 esac
2170
2171 set_default arch cc pkg_config sysinclude target_os
2172 enabled cross_compile || host_cc_default=$cc
2173 set_default host_cc
2174
2175 if ! $pkg_config --version >/dev/null 2>&1; then
2176     warn "$pkg_config not found, library detection may fail."
2177     pkg_config=false
2178 fi
2179
2180 exesuf() {
2181     case $1 in
2182         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2183     esac
2184 }
2185
2186 EXESUF=$(exesuf $target_os)
2187 HOSTEXESUF=$(exesuf $host_os)
2188
2189 # set temporary file name
2190 : ${TMPDIR:=$TEMPDIR}
2191 : ${TMPDIR:=$TMP}
2192 : ${TMPDIR:=/tmp}
2193
2194 if ! check_cmd mktemp -u XXXXXX; then
2195     # simple replacement for missing mktemp
2196     # NOT SAFE FOR GENERAL USE
2197     mktemp(){
2198         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2199     }
2200 fi
2201
2202 tmpfile(){
2203     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2204         (set -C; exec > $tmp) 2>/dev/null ||
2205         die "Unable to create temporary file in $TMPDIR."
2206     append TMPFILES $tmp
2207     eval $1=$tmp
2208 }
2209
2210 trap 'rm -f -- $TMPFILES' EXIT
2211
2212 tmpfile TMPASM .asm
2213 tmpfile TMPC   .c
2214 tmpfile TMPE   $EXESUF
2215 tmpfile TMPH   .h
2216 tmpfile TMPO   .o
2217 tmpfile TMPS   .S
2218 tmpfile TMPSH  .sh
2219 tmpfile TMPV   .ver
2220
2221 unset -f mktemp
2222
2223 chmod +x $TMPE
2224
2225 # make sure we can execute files in $TMPDIR
2226 cat > $TMPSH 2>> $logfile <<EOF
2227 #! /bin/sh
2228 EOF
2229 chmod +x $TMPSH >> $logfile 2>&1
2230 if ! $TMPSH >> $logfile 2>&1; then
2231     cat <<EOF
2232 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2233 variable to another directory and make sure that it is not mounted noexec.
2234 EOF
2235     die "Sanity test failed."
2236 fi
2237
2238 ccc_flags(){
2239     for flag; do
2240         case $flag in
2241             -std=c99)           echo -c99                       ;;
2242             -mcpu=*)            echo -arch ${flag#*=}           ;;
2243             -mieee)             echo -ieee                      ;;
2244             -O*|-fast)          echo $flag                      ;;
2245             -fno-math-errno)    echo -assume nomath_errno       ;;
2246             -g)                 echo -g3                        ;;
2247             -Wall)              echo -msg_enable level2         ;;
2248             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2249             -Wl,*)              echo $flag                      ;;
2250             -f*|-W*)                                            ;;
2251             *)                  echo $flag                      ;;
2252         esac
2253    done
2254 }
2255
2256 msvc_flags(){
2257     for flag; do
2258         case $flag in
2259             -fomit-frame-pointer) echo -Oy ;;
2260             -g)                   echo -Z7 ;;
2261             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2262                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2263                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2264                                        -wd4996 -wd4273 ;;
2265             -std=c99)             ;;
2266             -fno-math-errno)      ;;
2267             -fno-common)          ;;
2268             -fno-signed-zeros)    ;;
2269             -fPIC)                ;;
2270             -lz)                  echo zlib.lib ;;
2271             -lavifil32)           echo vfw32.lib ;;
2272             -lavicap32)           echo vfw32.lib user32.lib ;;
2273             -l*)                  echo ${flag#-l}.lib ;;
2274             *)                    echo $flag ;;
2275         esac
2276     done
2277 }
2278
2279 pgi_flags(){
2280     for flag; do
2281         case $flag in
2282             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2283             -fomit-frame-pointer) echo -Mnoframe ;;
2284             -g)                   echo -gopt ;;
2285             *)                    echo $flag ;;
2286         esac
2287     done
2288 }
2289
2290 suncc_flags(){
2291     for flag; do
2292         case $flag in
2293             -march=*|-mcpu=*)
2294                 case "${flag#*=}" in
2295                     native)                   echo -xtarget=native       ;;
2296                     v9|niagara)               echo -xarch=sparc          ;;
2297                     ultrasparc)               echo -xarch=sparcvis       ;;
2298                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2299                     i586|pentium)             echo -xchip=pentium        ;;
2300                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2301                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2302                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2303                     pentium4*)          echo -xtarget=pentium4           ;;
2304                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2305                     *-sse3)             echo -xarch=sse3                 ;;
2306                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2307                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2308                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2309                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2310                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2311                     k8|opteron|athlon64|athlon-fx)
2312                                               echo -xarch=sse2a          ;;
2313                     athlon*)                  echo -xarch=pentium_proa   ;;
2314                 esac
2315                 ;;
2316             -std=c99)             echo -xc99              ;;
2317             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2318             -fPIC)                echo -KPIC -xcode=pic32 ;;
2319             -W*,*)                echo $flag              ;;
2320             -f*-*|-W*|-mimpure-text)                      ;;
2321             -shared)              echo -G                 ;;
2322             *)                    echo $flag              ;;
2323         esac
2324     done
2325 }
2326
2327 tms470_flags(){
2328     for flag; do
2329         case $flag in
2330             -march=*|-mcpu=*)
2331                 case "${flag#*=}" in
2332                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2333                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2334                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2335                     armv6*|arm11*)          echo -mv=6   ;;
2336                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2337                                             echo -mv=5e  ;;
2338                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2339                 esac
2340                 ;;
2341             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2342             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2343             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2344             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2345             -msoft-float)   echo --float_support=vfplib       ;;
2346             -O[0-3]|-mf=*)  echo $flag                        ;;
2347             -g)             echo -g -mn                       ;;
2348             -pds=*)         echo $flag                        ;;
2349             -D*|-I*)        echo $flag                        ;;
2350             --gcc|--abi=*)  echo $flag                        ;;
2351             -me)            echo $flag                        ;;
2352         esac
2353     done
2354 }
2355
2356 probe_cc(){
2357     pfx=$1
2358     _cc=$2
2359
2360     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2361     unset _ld_o _ldflags _ld_lib _ld_path
2362     unset _depflags _DEPCMD _DEPFLAGS
2363     _flags_filter=echo
2364
2365     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2366         _type=llvm_gcc
2367         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2368         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2369         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2370         _cflags_speed='-O3'
2371         _cflags_size='-Os'
2372     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2373         _type=gcc
2374         gcc_version=$($_cc --version | head -n1)
2375         gcc_basever=$($_cc -dumpversion)
2376         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2377         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2378         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2379         if ! $_cc -dumpversion | grep -q '^2\.'; then
2380             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2381         fi
2382         _cflags_speed='-O2'
2383         _cflags_size='-Os'
2384     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2385         _type=icc
2386         _ident=$($_cc --version | head -n1)
2387         _depflags='-MMD'
2388         _cflags_speed='-O3'
2389         _cflags_size='-Os'
2390         _cflags_noopt='-O1'
2391     elif $_cc -v 2>&1 | grep -q xlc; then
2392         _type=xlc
2393         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2394         _cflags_speed='-O5'
2395         _cflags_size='-O5 -qcompact'
2396     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2397         _type=ccc
2398         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2399         _DEPFLAGS='-M'
2400         _cflags_speed='-fast'
2401         _cflags_size='-O1'
2402         _flags_filter=ccc_flags
2403     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2404         test -d "$sysroot" || die "No valid sysroot specified."
2405         _type=armcc
2406         _ident=$($_cc --vsn | head -n1)
2407         armcc_conf="$PWD/armcc.conf"
2408         $_cc --arm_linux_configure                 \
2409              --arm_linux_config_file="$armcc_conf" \
2410              --configure_sysroot="$sysroot"        \
2411              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2412              die "Error creating armcc configuration file."
2413         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2414         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2415         as_default="${cross_prefix}gcc"
2416         _depflags='-MMD'
2417         _cflags_speed='-O3'
2418         _cflags_size='-Os'
2419     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2420         _type=tms470
2421         _ident=$($_cc -version | head -n1 | tr -s ' ')
2422         _flags='--gcc --abi=eabi -me'
2423         _cc_e='-ppl -fe=$@'
2424         _cc_o='-fe=$@'
2425         _depflags='-ppa -ppd=$(@:.o=.d)'
2426         _cflags_speed='-O3 -mf=5'
2427         _cflags_size='-O3 -mf=2'
2428         _flags_filter=tms470_flags
2429     elif $_cc -v 2>&1 | grep -q clang; then
2430         _type=clang
2431         _ident=$($_cc --version | head -n1)
2432         _depflags='-MMD'
2433         _cflags_speed='-O3'
2434         _cflags_size='-Os'
2435     elif $_cc -V 2>&1 | grep -q Sun; then
2436         _type=suncc
2437         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2438         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2439         _DEPFLAGS='-xM1 -xc99'
2440         _ldflags='-std=c99'
2441         _cflags_speed='-O5'
2442         _cflags_size='-O5 -xspace'
2443         _flags_filter=suncc_flags
2444     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2445         _type=pathscale
2446         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2447         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2448         _cflags_speed='-O2'
2449         _cflags_size='-Os'
2450         _flags_filter='filter_out -Wdisabled-optimization'
2451     elif $_cc -v 2>&1 | grep -q Open64; then
2452         _type=open64
2453         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2454         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2455         _cflags_speed='-O2'
2456         _cflags_size='-Os'
2457         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2458     elif $_cc -V 2>&1 | grep -q Portland; then
2459         _type=pgi
2460         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2461         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2462         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2463         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2464         _cflags_noopt="-O1"
2465         _flags_filter=pgi_flags
2466     elif $_cc 2>&1 | grep -q Microsoft; then
2467         _type=msvc
2468         _ident=$($cc 2>&1 | head -n1)
2469         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2470         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2471         _cflags_speed="-O2"
2472         _cflags_size="-O1"
2473         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2474         if $_cc 2>&1 | grep -q Linker; then
2475             _ld_o='-out $@'
2476         else
2477             _ld_o='-Fe$@'
2478         fi
2479         _cc_o='-Fo $@'
2480         _cc_e='-P -Fi $@'
2481         _flags_filter=msvc_flags
2482         _ld_lib='lib%.a'
2483         _ld_path='-libpath:'
2484         _flags='-nologo'
2485         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2486         if [ $pfx = hostcc ]; then
2487             append _cflags -Dsnprintf=_snprintf
2488         fi
2489     fi
2490
2491     eval ${pfx}_type=\$_type
2492     eval ${pfx}_ident=\$_ident
2493 }
2494
2495 set_ccvars(){
2496     eval ${1}_C=\${_cc_c-\${${1}_C}}
2497     eval ${1}_E=\${_cc_e-\${${1}_E}}
2498     eval ${1}_O=\${_cc_o-\${${1}_O}}
2499
2500     if [ -n "$_depflags" ]; then
2501         eval ${1}_DEPFLAGS=\$_depflags
2502     else
2503         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2504         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2505         eval DEP${1}FLAGS=\$_flags
2506     fi
2507 }
2508
2509 probe_cc cc "$cc"
2510 cflags_filter=$_flags_filter
2511 cflags_speed=$_cflags_speed
2512 cflags_size=$_cflags_size
2513 cflags_noopt=$_cflags_noopt
2514 add_cflags $_flags $_cflags
2515 cc_ldflags=$_ldflags
2516 set_ccvars CC
2517
2518 probe_cc hostcc "$host_cc"
2519 host_cflags_filter=$_flags_filter
2520 add_host_cflags  $_flags $_cflags
2521 set_ccvars HOSTCC
2522
2523 test -n "$cc_type" && enable $cc_type ||
2524     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2525
2526 : ${as_default:=$cc}
2527 : ${dep_cc_default:=$cc}
2528 : ${ld_default:=$cc}
2529 : ${host_ld_default:=$host_cc}
2530 set_default ar as dep_cc ld host_ld
2531
2532 probe_cc as "$as"
2533 asflags_filter=$_flags_filter
2534 add_asflags $_flags $_cflags
2535 set_ccvars AS
2536
2537 probe_cc ld "$ld"
2538 ldflags_filter=$_flags_filter
2539 add_ldflags $_flags $_ldflags
2540 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2541 LD_O=${_ld_o-$LD_O}
2542 LD_LIB=${_ld_lib-$LD_LIB}
2543 LD_PATH=${_ld_path-$LD_PATH}
2544
2545 probe_cc hostld "$host_ld"
2546 host_ldflags_filter=$_flags_filter
2547 add_host_ldflags $_flags $_ldflags
2548 HOSTLD_O=${_ld_o-$HOSTLD_O}
2549
2550 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2551     probe_cc depcc "$dep_cc"
2552     CCDEP=${_DEPCMD:-$DEPCMD}
2553     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2554     DEPCCFLAGS=$_flags
2555 fi
2556
2557 if $ar 2>&1 | grep -q Microsoft; then
2558     arflags="-nologo"
2559     ar_o='-out:$@'
2560 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2561     arflags="rq"
2562     ar_o='$@'
2563 else
2564     arflags="rc"
2565     ar_o='$@'
2566 fi
2567
2568 add_cflags $extra_cflags
2569 add_asflags $extra_cflags
2570
2571 if test -n "$sysroot"; then
2572     case "$cc_type" in
2573         gcc|llvm_gcc|clang)
2574             add_cppflags --sysroot="$sysroot"
2575             add_ldflags --sysroot="$sysroot"
2576         ;;
2577         tms470)
2578             add_cppflags -I"$sysinclude"
2579             add_ldflags  --sysroot="$sysroot"
2580         ;;
2581     esac
2582 fi
2583
2584 if test "$cpu" = host; then
2585     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2586
2587     case "$cc_type" in
2588         gcc|llvm_gcc)
2589             check_native(){
2590                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2591                 sed -n "/cc1.*$1=/{
2592                             s/.*$1=\\([^ ]*\\).*/\\1/
2593                             p
2594                             q
2595                         }" $TMPE
2596             }
2597             cpu=$(check_native -march || check_native -mcpu)
2598         ;;
2599     esac
2600
2601     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2602 fi
2603
2604 # Deal with common $arch aliases
2605 case "$arch" in
2606     aarch64|arm64)
2607         arch="aarch64"
2608     ;;
2609     arm*)
2610         arch="arm"
2611     ;;
2612     mips*|IP*)
2613         arch="mips"
2614     ;;
2615     parisc*|hppa*)
2616         arch="parisc"
2617     ;;
2618     "Power Macintosh"|ppc*|powerpc*)
2619         arch="ppc"
2620     ;;
2621     s390|s390x)
2622         arch="s390"
2623     ;;
2624     sh4|sh)
2625         arch="sh4"
2626     ;;
2627     sun4u|sparc*)
2628         arch="sparc"
2629     ;;
2630     tilegx|tile-gx)
2631         arch="tilegx"
2632     ;;
2633     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2634         arch="x86"
2635     ;;
2636 esac
2637
2638 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2639 enable $arch
2640
2641 # Add processor-specific flags
2642 if enabled aarch64; then
2643
2644     case $cpu in
2645         armv*)
2646             cpuflags="-march=$cpu"
2647         ;;
2648         *)
2649             cpuflags="-mcpu=$cpu"
2650         ;;
2651     esac
2652
2653 elif enabled alpha; then
2654
2655     cpuflags="-mcpu=$cpu"
2656
2657 elif enabled arm; then
2658
2659     check_arm_arch() {
2660         check_cpp_condition stddef.h \
2661             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2662             $cpuflags
2663     }
2664
2665     probe_arm_arch() {
2666         if   check_arm_arch 4;        then echo armv4;
2667         elif check_arm_arch 4T;       then echo armv4t;
2668         elif check_arm_arch 5;        then echo armv5;
2669         elif check_arm_arch 5E;       then echo armv5e;
2670         elif check_arm_arch 5T;       then echo armv5t;
2671         elif check_arm_arch 5TE;      then echo armv5te;
2672         elif check_arm_arch 5TEJ;     then echo armv5te;
2673         elif check_arm_arch 6;        then echo armv6;
2674         elif check_arm_arch 6J;       then echo armv6j;
2675         elif check_arm_arch 6K;       then echo armv6k;
2676         elif check_arm_arch 6Z;       then echo armv6z;
2677         elif check_arm_arch 6ZK;      then echo armv6zk;
2678         elif check_arm_arch 6T2;      then echo armv6t2;
2679         elif check_arm_arch 7;        then echo armv7;
2680         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2681         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2682         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2683         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2684         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2685         fi
2686     }
2687
2688     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2689
2690     case $cpu in
2691         armv*)
2692             cpuflags="-march=$cpu"
2693             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2694         ;;
2695         *)
2696             cpuflags="-mcpu=$cpu"
2697             case $cpu in
2698                 cortex-a*)                               subarch=armv7a  ;;
2699                 cortex-r*)                               subarch=armv7r  ;;
2700                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2701                 arm11*)                                  subarch=armv6   ;;
2702                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2703                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2704                 *)                             subarch=$(probe_arm_arch) ;;
2705             esac
2706         ;;
2707     esac
2708
2709     case "$subarch" in
2710         armv5t*)    enable fast_clz                ;;
2711         armv[6-8]*) enable fast_clz fast_unaligned ;;
2712     esac
2713
2714 elif enabled avr32; then
2715
2716     case $cpu in
2717         ap7[02]0[0-2])
2718             subarch="avr32_ap"
2719             cpuflags="-mpart=$cpu"
2720         ;;
2721         ap)
2722             subarch="avr32_ap"
2723             cpuflags="-march=$cpu"
2724         ;;
2725         uc3[ab]*)
2726             subarch="avr32_uc"
2727             cpuflags="-mcpu=$cpu"
2728         ;;
2729         uc)
2730             subarch="avr32_uc"
2731             cpuflags="-march=$cpu"
2732         ;;
2733     esac
2734
2735 elif enabled bfin; then
2736
2737     cpuflags="-mcpu=$cpu"
2738
2739 elif enabled mips; then
2740
2741     cpuflags="-march=$cpu"
2742
2743 elif enabled ppc; then
2744
2745     case $(tolower $cpu) in
2746         601|ppc601|powerpc601)
2747             cpuflags="-mcpu=601"
2748             disable altivec
2749         ;;
2750         603*|ppc603*|powerpc603*)
2751             cpuflags="-mcpu=603"
2752             disable altivec
2753         ;;
2754         604*|ppc604*|powerpc604*)
2755             cpuflags="-mcpu=604"
2756             disable altivec
2757         ;;
2758         g3|75*|ppc75*|powerpc75*)
2759             cpuflags="-mcpu=750"
2760             disable altivec
2761         ;;
2762         g4|745*|ppc745*|powerpc745*)
2763             cpuflags="-mcpu=7450"
2764         ;;
2765         74*|ppc74*|powerpc74*)
2766             cpuflags="-mcpu=7400"
2767         ;;
2768         g5|970|ppc970|powerpc970)
2769             cpuflags="-mcpu=970"
2770         ;;
2771         power[3-7]*)
2772             cpuflags="-mcpu=$cpu"
2773         ;;
2774         cell)
2775             cpuflags="-mcpu=cell"
2776             enable ldbrx
2777         ;;
2778         e500mc)
2779             cpuflags="-mcpu=e500mc"
2780             disable altivec
2781         ;;
2782         e500v2)
2783             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2784             disable altivec
2785         ;;
2786         e500)
2787             cpuflags="-mcpu=8540 -mhard-float"
2788             disable altivec
2789         ;;
2790     esac
2791
2792 elif enabled sparc; then
2793
2794     case $cpu in
2795         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2796             cpuflags="-mcpu=$cpu"
2797             disable vis
2798         ;;
2799         ultrasparc*|niagara[234])
2800             cpuflags="-mcpu=$cpu"
2801         ;;
2802     esac
2803
2804 elif enabled x86; then
2805
2806     case $cpu in
2807         i[345]86|pentium)
2808             cpuflags="-march=$cpu"
2809             disable mmx
2810         ;;
2811         # targets that do NOT support conditional mov (cmov)
2812         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2813             cpuflags="-march=$cpu"
2814             disable cmov
2815         ;;
2816         # targets that do support conditional mov (cmov)
2817         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2818             cpuflags="-march=$cpu"
2819             enable cmov
2820             enable fast_cmov
2821         ;;
2822         # targets that do support conditional mov but on which it's slow
2823         pentium4|pentium4m|prescott|nocona)
2824             cpuflags="-march=$cpu"
2825             enable cmov
2826             disable fast_cmov
2827         ;;
2828     esac
2829
2830 fi
2831
2832 if [ "$cpu" != generic ]; then
2833     add_cflags  $cpuflags
2834     add_asflags $cpuflags
2835 fi
2836
2837 # compiler sanity check
2838 check_exec <<EOF
2839 int main(void){ return 0; }
2840 EOF
2841 if test "$?" != 0; then
2842     echo "$cc is unable to create an executable file."
2843     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2844         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2845         echo "Only do this if you know what cross compiling means."
2846     fi
2847     die "C compiler test failed."
2848 fi
2849
2850 add_cppflags -D_ISOC99_SOURCE
2851 check_cflags -std=c99
2852 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2853 #include <stdlib.h>
2854 EOF
2855 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2856 #include <stdlib.h>
2857 EOF
2858
2859 check_host_cflags -std=c99
2860 check_host_cflags -Wall
2861
2862 check_64bit(){
2863     arch32=$1
2864     arch64=$2
2865     expr=$3
2866     check_code cc "" "int test[2*($expr) - 1]" &&
2867         subarch=$arch64 || subarch=$arch32
2868 }
2869
2870 case "$arch" in
2871     aarch64|alpha|ia64)
2872         spic=$shared
2873     ;;
2874     mips)
2875         check_64bit mips mips64 '_MIPS_SIM > 1'
2876         spic=$shared
2877     ;;
2878     parisc)
2879         check_64bit parisc parisc64 'sizeof(void *) > 4'
2880         spic=$shared
2881     ;;
2882     ppc)
2883         check_64bit ppc ppc64 'sizeof(void *) > 4'
2884         spic=$shared
2885     ;;
2886     sparc)
2887         check_64bit sparc sparc64 'sizeof(void *) > 4'
2888         spic=$shared
2889     ;;
2890     x86)
2891         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2892         if test "$subarch" = "x86_64"; then
2893             spic=$shared
2894         fi
2895     ;;
2896 esac
2897
2898 enable $subarch
2899 enabled spic && enable pic
2900
2901 # OS specific
2902 case $target_os in
2903     haiku)
2904         prefix_default="/boot/common"
2905         network_extralibs="-lnetwork"
2906         host_libs=
2907         ;;
2908     sunos)
2909         AVSERVERLDFLAGS=""
2910         SHFLAGS='-shared -Wl,-h,$$(@F)'
2911         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2912         network_extralibs="-lsocket -lnsl"
2913         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2914         # When using suncc to build, the Solaris linker will mark
2915         # an executable with each instruction set encountered by
2916         # the Solaris assembler.  As our libraries contain their own
2917         # guards for processor-specific code, instead suppress
2918         # generation of the HWCAPS ELF section on Solaris x86 only.
2919         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2920         nm_default='nm -P -g'
2921         ;;
2922     netbsd)
2923         disable symver
2924         oss_indev_extralibs="-lossaudio"
2925         oss_outdev_extralibs="-lossaudio"
2926         ;;
2927     openbsd|bitrig)
2928         disable symver
2929         SHFLAGS='-shared'
2930         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2931         SLIB_INSTALL_LINKS=
2932         oss_indev_extralibs="-lossaudio"
2933         oss_outdev_extralibs="-lossaudio"
2934         ;;
2935     dragonfly)
2936         disable symver
2937         ;;
2938     freebsd)
2939         ;;
2940     bsd/os)
2941         add_extralibs -lpoll -lgnugetopt
2942         ;;
2943     darwin)
2944         gas="gas-preprocessor.pl $cc"
2945         enabled ppc && add_asflags -force_cpusubtype_ALL
2946         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2947         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2948         add_ldflags -Wl,-dynamic,-search_paths_first
2949         SLIBSUF=".dylib"
2950         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2951         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2952         AVSERVERLDFLAGS=-Wl,-bind_at_load
2953         objformat="macho"
2954         enabled x86_64 && objformat="macho64"
2955         enabled_any pic shared ||
2956             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2957         ;;
2958     mingw32*)
2959         if test $target_os = "mingw32ce"; then
2960             disable network
2961         else
2962             target_os=mingw32
2963         fi
2964         LIBTARGET=i386
2965         if enabled x86_64; then
2966             LIBTARGET="i386:x86-64"
2967         elif enabled arm; then
2968             LIBTARGET=arm-wince
2969         fi
2970         shlibdir_default="$bindir_default"
2971         SLIBPREF=""
2972         SLIBSUF=".dll"
2973         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2974         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2975         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2976         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2977         SLIB_INSTALL_LINKS=
2978         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2979         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2980         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2981         objformat="win32"
2982         dlltool="${cross_prefix}dlltool"
2983         ranlib=:
2984         enable dos_paths
2985         ;;
2986     win32|win64)
2987         if enabled shared; then
2988             # Link to the import library instead of the normal static library
2989             # for shared libs.
2990             LD_LIB='%.lib'
2991             # Cannot build shared and static libraries at the same time with
2992             # MSVC.
2993             disable static
2994         fi
2995         shlibdir_default="$bindir_default"
2996         SLIBPREF=""
2997         SLIBSUF=".dll"
2998         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2999         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3000         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3001         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3002         SLIB_INSTALL_LINKS=
3003         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3004         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3005         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3006         objformat="win32"
3007         ranlib=:
3008         enable dos_paths
3009         ;;
3010     cygwin*)
3011         target_os=cygwin
3012         shlibdir_default="$bindir_default"
3013         SLIBPREF="cyg"
3014         SLIBSUF=".dll"
3015         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3016         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3017         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3018         SLIB_INSTALL_LINKS=
3019         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3020         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3021         objformat="win32"
3022         enable dos_paths
3023         ;;
3024     *-dos|freedos|opendos)
3025         network_extralibs="-lsocket"
3026         objformat="coff"
3027         enable dos_paths
3028         add_cppflags -U__STRICT_ANSI__
3029         ;;
3030     linux)
3031         enable dv1394
3032         ;;
3033     irix*)
3034         target_os=irix
3035         ranlib="echo ignoring ranlib"
3036         ;;
3037     os/2*)
3038         ln_s="cp -f"
3039         objformat="aout"
3040         add_cppflags -D_GNU_SOURCE
3041         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3042         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3043         AVSERVERLDFLAGS=""
3044         LIBSUF="_s.a"
3045         SLIBPREF=""
3046         SLIBSUF=".dll"
3047         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3048         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3049         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3050             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3051             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3052             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3053             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3054             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3055         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3056             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3057         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3058         enable dos_paths
3059         ;;
3060     gnu/kfreebsd)
3061         add_cppflags -D_BSD_SOURCE
3062         ;;
3063     gnu)
3064         ;;
3065     qnx)
3066         add_cppflags -D_QNX_SOURCE
3067         network_extralibs="-lsocket"
3068         ;;
3069     symbian)
3070         SLIBSUF=".dll"
3071         enable dos_paths
3072         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3073         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3074         add_ldflags -Wl,--target1-abs,--no-undefined \
3075                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3076                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3077         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3078                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3079                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3080         ;;
3081     osf1)
3082         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3083         AVSERVERLDFLAGS=
3084         ;;
3085     minix)
3086         ;;
3087     plan9)
3088         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3089                      -D_REENTRANT_SOURCE        \
3090                      -D_RESEARCH_SOURCE         \
3091                      -DFD_SETSIZE=96            \
3092                      -DHAVE_SOCK_OPTS
3093         add_compat strtod.o strtod=avpriv_strtod
3094         network_extralibs='-lbsd'
3095         exeobjs=compat/plan9/main.o
3096         disable avserver
3097         cp_f='cp'
3098         ;;
3099     none)
3100         ;;
3101     *)
3102         die "Unknown OS '$target_os'."
3103         ;;
3104 esac
3105
3106 # determine libc flavour
3107
3108 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3109 if check_cpp_condition features.h "defined __UCLIBC__"; then
3110     libc_type=uclibc
3111     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3112 elif check_cpp_condition features.h "defined __GLIBC__"; then
3113     libc_type=glibc
3114     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3115 # MinGW headers can be installed on Cygwin, so check for newlib first.
3116 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3117     libc_type=newlib
3118     add_cppflags -U__STRICT_ANSI__
3119 elif check_header _mingw.h; then
3120     libc_type=mingw
3121     check_cpp_condition _mingw.h \
3122         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3123             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3124         die "ERROR: MinGW runtime version must be >= 3.15."
3125     add_cppflags -U__STRICT_ANSI__
3126 elif check_func_headers stdlib.h _get_doserrno; then
3127     libc_type=msvcrt
3128     add_compat strtod.o strtod=avpriv_strtod
3129     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3130                                  _snprintf=avpriv_snprintf  \
3131                                  vsnprintf=avpriv_vsnprintf
3132 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3133     libc_type=klibc
3134 fi
3135
3136 test -n "$libc_type" && enable $libc_type
3137
3138 # hacks for compiler/libc/os combinations
3139
3140 if enabled_all tms470 glibc; then
3141     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3142     add_cppflags -D__USER_LABEL_PREFIX__=
3143     add_cppflags -D__builtin_memset=memset
3144     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3145     add_cflags   -pds=48    # incompatible redefinition of macro
3146 fi
3147
3148 if enabled_all ccc glibc; then
3149     add_ldflags -Wl,-z,now  # calls to libots crash without this
3150 fi
3151
3152 esc(){
3153     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3154 }
3155
3156 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3157
3158 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3159
3160 set_default $PATHS_LIST
3161 set_default nm
3162
3163 # we need to build at least one lib type
3164 if ! enabled_any static shared; then
3165     cat <<EOF
3166 At least one library type must be built.
3167 Specify --enable-static to build the static libraries or --enable-shared to
3168 build the shared libraries as well. To only build the shared libraries specify
3169 --disable-static in addition to --enable-shared.
3170 EOF
3171     exit 1;
3172 fi
3173
3174 die_license_disabled() {
3175     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3176 }
3177
3178 die_license_disabled gpl libcdio
3179 die_license_disabled gpl libx264
3180 die_license_disabled gpl libxavs
3181 die_license_disabled gpl libxvid
3182 die_license_disabled gpl x11grab
3183
3184 die_license_disabled nonfree libfaac
3185 die_license_disabled nonfree libfdk_aac
3186 die_license_disabled nonfree openssl
3187
3188 die_license_disabled version3 libopencore_amrnb
3189 die_license_disabled version3 libopencore_amrwb
3190 die_license_disabled version3 libvo_aacenc
3191 die_license_disabled version3 libvo_amrwbenc
3192
3193 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3194
3195 disabled optimizations || check_cflags -fomit-frame-pointer
3196
3197 enable_pic() {
3198     enable pic
3199     add_cppflags -DPIC
3200     add_cflags   -fPIC
3201     add_asflags  -fPIC
3202 }
3203
3204 enabled pic && enable_pic
3205
3206 check_cc <<EOF || die "Symbol mangling check failed."
3207 int ff_extern;
3208 EOF
3209 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3210 extern_prefix=${sym%%ff_extern*}
3211
3212 check_cc <<EOF && enable_weak inline_asm
3213 void foo(void) { __asm__ volatile ("" ::); }
3214 EOF
3215
3216 _restrict=
3217 for restrict_keyword in restrict __restrict__ __restrict; do
3218     check_cc <<EOF && _restrict=$restrict_keyword && break
3219 void foo(char * $restrict_keyword p);
3220 EOF
3221 done
3222
3223 check_cc <<EOF && enable attribute_packed
3224 struct { int x; } __attribute__((packed)) x;
3225 EOF
3226
3227 check_cc <<EOF && enable attribute_may_alias
3228 union { int x; } __attribute__((may_alias)) x;
3229 EOF
3230
3231 check_cc <<EOF || die "endian test failed"
3232 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3233 EOF
3234 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3235
3236 if enabled alpha; then
3237
3238     check_cflags -mieee
3239
3240 elif enabled arm; then
3241
3242     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3243     enabled thumb && check_cflags -mthumb || check_cflags -marm
3244     nogas=die
3245
3246     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3247         enable vfp_args
3248     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3249         case "${cross_prefix:-$cc}" in
3250             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3251             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3252 __asm__ (".eabi_attribute 28, 1");
3253 int main(void) { return 0; }
3254 EOF
3255         esac
3256         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3257     fi
3258
3259     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3260     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3261     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3262     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3263     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3264     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3265
3266     [ $target_os = linux ] ||
3267         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3268             $ARCH_EXT_LIST_ARM
3269
3270     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3271     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3272
3273     enabled_all armv6t2 shared !pic && enable_pic
3274
3275 elif enabled mips; then
3276
3277     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3278
3279 elif enabled parisc; then
3280
3281     if enabled gcc; then
3282         case $($cc -dumpversion) in
3283             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3284         esac
3285     fi
3286
3287 elif enabled ppc; then
3288
3289     enable local_aligned_8 local_aligned_16
3290
3291     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3292     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3293     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3294     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3295
3296     # AltiVec flags: The FSF version of GCC differs from the Apple version
3297     if enabled altivec; then
3298         nogas=warn
3299         check_cflags -maltivec -mabi=altivec &&
3300         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3301         check_cflags -faltivec
3302
3303         # check if our compiler supports Motorola AltiVec C API
3304         check_cc <<EOF || disable altivec
3305 $inc_altivec_h
3306 int main(void) {
3307     vector signed int v1 = (vector signed int) { 0 };
3308     vector signed int v2 = (vector signed int) { 1 };
3309     v1 = vec_add(v1, v2);
3310     return 0;
3311 }
3312 EOF
3313
3314         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3315     fi
3316
3317 elif enabled sparc; then
3318
3319     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3320
3321 elif enabled x86; then
3322
3323     check_builtin rdtsc    intrin.h   "__rdtsc()"
3324     check_builtin mm_empty mmintrin.h "_mm_empty()"
3325
3326     enable local_aligned_8 local_aligned_16
3327
3328     # check whether EBP is available on x86
3329     # As 'i' is stored on the stack, this program will crash
3330     # if the base pointer is used to access it because the
3331     # base pointer is cleared in the inline assembly code.
3332     check_exec_crash <<EOF && enable ebp_available
3333 volatile int i=0;
3334 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3335 return i;
3336 EOF
3337
3338     # check whether EBX is available on x86
3339     check_inline_asm ebx_available '""::"b"(0)' &&
3340         check_inline_asm ebx_available '"":::"%ebx"'
3341
3342     # check whether xmm clobbers are supported
3343     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3344
3345     # check whether binutils is new enough to compile SSSE3/MMXEXT
3346     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3347     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3348
3349     if ! disabled_any asm mmx yasm; then
3350         if check_cmd $yasmexe --version; then
3351             enabled x86_64 && yasm_extra="-m amd64"
3352             yasm_debug="-g dwarf2"
3353         elif check_cmd nasm -v; then
3354             yasmexe=nasm
3355             yasm_debug="-g -F dwarf"
3356             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3357         fi
3358
3359         YASMFLAGS="-f $objformat $yasm_extra"
3360         enabled pic               && append YASMFLAGS "-DPIC"
3361         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3362         case "$objformat" in
3363             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3364         esac
3365
3366         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3367             die "yasm not found, use --disable-yasm for a crippled build"
3368         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3369         check_yasm "CPU amdnop" && enable cpunop
3370     fi
3371
3372     case "$cpu" in
3373         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3374             disable fast_clz
3375         ;;
3376     esac
3377
3378 fi
3379
3380 if enabled asm; then
3381     as=${gas:=$as}
3382     check_as <<EOF && enable gnu_as || \
3383         $nogas "GNU assembler not found, install gas-preprocessor"
3384 .macro m n
3385 \n: .int 0
3386 .endm
3387 m x
3388 EOF
3389 fi
3390
3391 check_ldflags -Wl,--as-needed
3392
3393 if check_func dlopen; then
3394     ldl=
3395 elif check_func dlopen -ldl; then
3396     ldl=-ldl
3397 fi
3398
3399 if ! disabled network; then
3400     check_type "sys/types.h sys/socket.h" socklen_t
3401     check_type netdb.h "struct addrinfo"
3402     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3403     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3404     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3405     check_type netinet/in.h "struct sockaddr_in6"
3406     check_type poll.h "struct pollfd"
3407     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3408     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3409     check_type netinet/sctp.h "struct sctp_event_subscribe"
3410     check_func getaddrinfo $network_extralibs
3411     check_func getservbyport $network_extralibs
3412     # Prefer arpa/inet.h over winsock2
3413     if check_header arpa/inet.h ; then
3414         check_func closesocket
3415     elif check_header winsock2.h ; then
3416         check_func_headers winsock2.h closesocket -lws2 &&
3417             network_extralibs="-lws2" ||
3418         { check_func_headers winsock2.h closesocket -lws2_32 &&
3419             network_extralibs="-lws2_32"; }
3420         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3421         check_type ws2tcpip.h socklen_t
3422         check_type ws2tcpip.h "struct addrinfo"
3423         check_type ws2tcpip.h "struct group_source_req"
3424         check_type ws2tcpip.h "struct ip_mreq_source"
3425         check_type ws2tcpip.h "struct ipv6_mreq"
3426         check_type winsock2.h "struct pollfd"
3427         check_type ws2tcpip.h "struct sockaddr_in6"
3428         check_type ws2tcpip.h "struct sockaddr_storage"
3429         check_struct winsock2.h "struct sockaddr" sa_len
3430     else
3431         disable network
3432     fi
3433 fi
3434
3435 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3436 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3437
3438 check_func  fcntl
3439 check_func  fork
3440 check_func  gethrtime
3441 check_func  getopt
3442 check_func  getrusage
3443 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3444 check_func  gettimeofday
3445 check_func  inet_aton $network_extralibs
3446 check_func  isatty
3447 check_func  localtime_r
3448 check_func  ${malloc_prefix}memalign            && enable memalign
3449 check_func  mkstemp
3450 check_func  mmap
3451 check_func  mprotect
3452 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3453 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3454 check_func  setrlimit
3455 check_func  strerror_r
3456 check_func  strptime
3457 check_func  strtok_r
3458 check_func  sched_getaffinity
3459 check_builtin sync_synchronize "" "__sync_synchronize()"
3460 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3461 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3462 check_func  sysconf
3463 check_func  sysctl
3464 check_func  usleep
3465 check_func_headers io.h setmode
3466 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3467 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3468 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3469 check_func_headers windows.h GetProcessAffinityMask
3470 check_func_headers windows.h GetProcessTimes
3471 check_func_headers windows.h GetSystemTimeAsFileTime
3472 check_func_headers windows.h MapViewOfFile
3473 check_func_headers windows.h SetConsoleTextAttribute
3474 check_func_headers windows.h Sleep
3475 check_func_headers windows.h VirtualAlloc
3476
3477 check_header direct.h
3478 check_header dlfcn.h
3479 check_header dxva.h
3480 check_header dxva2api.h
3481 check_header io.h
3482 check_header malloc.h
3483 check_header poll.h
3484 check_header sys/mman.h
3485 check_header sys/param.h
3486 check_header sys/resource.h
3487 check_header sys/select.h
3488 check_header sys/time.h
3489 check_header unistd.h
3490 check_header vdpau/vdpau.h
3491 check_header vdpau/vdpau_x11.h
3492 check_header VideoDecodeAcceleration/VDADecoder.h
3493 check_header windows.h
3494 check_header X11/extensions/XvMClib.h
3495
3496 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3497 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3498
3499 if ! disabled w32threads && ! enabled pthreads; then
3500     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3501 fi
3502
3503 # check for some common methods of building with pthread support
3504 # do this before the optional library checks as some of them require pthreads
3505 if ! disabled pthreads && ! enabled w32threads; then
3506     enable pthreads
3507     if check_func pthread_create; then
3508         :
3509     elif check_func pthread_create -pthread; then
3510         add_cflags -pthread
3511         add_extralibs -pthread
3512     elif check_func pthread_create -pthreads; then
3513         add_cflags -pthreads
3514         add_extralibs -pthreads
3515     elif check_func pthread_create -lpthreadGC2; then
3516         add_extralibs -lpthreadGC2
3517     elif ! check_lib pthread.h pthread_create -lpthread; then
3518         disable pthreads
3519     fi
3520 fi
3521
3522 for thread in $THREADS_LIST; do
3523     if enabled $thread; then
3524         test -n "$thread_type" &&
3525             die "ERROR: Only one thread type must be selected." ||
3526             thread_type="$thread"
3527     fi
3528 done
3529
3530 check_lib math.h sin -lm && LIBM="-lm"
3531 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3532
3533 atan2f_args=2
3534 ldexpf_args=2
3535 powf_args=2
3536
3537 for func in $MATH_FUNCS; do
3538     eval check_mathfunc $func \${${func}_args:-1}
3539 done
3540
3541 # these are off by default, so fail if requested and not available
3542 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3543 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3544 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3545 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3546 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3547 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3548 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3549                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3550                         done || die "ERROR: libgsm not found"; }
3551 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3552 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3553 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3554 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3555 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3556 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3557 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3558 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3559 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3560 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3561 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3562 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3563 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3564 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3565 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3566 enabled libvpx     && {
3567     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3568                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3569     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3570                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3571     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3572     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3573 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3574                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3575                         die "ERROR: libx264 version must be >= 0.118."; }
3576 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3577 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3578 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3579                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3580                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3581                         die "ERROR: openssl not found"; }
3582
3583 if enabled gnutls; then
3584     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3585     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3586 fi
3587
3588 # libdc1394 check
3589 if enabled libdc1394; then
3590     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3591         enable libdc1394_2; } ||
3592     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3593         enable libdc1394_1; } ||
3594     die "ERROR: No version of libdc1394 found "
3595 fi
3596
3597 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3598     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3599     enable sdl &&
3600     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3601 fi
3602
3603 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3604
3605 check_header linux/fb.h
3606 check_header linux/videodev2.h
3607 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3608
3609 check_header sys/videoio.h
3610
3611 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3612 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3613 # w32api 3.12 had it defined wrong
3614 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3615
3616 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3617 { check_header dev/bktr/ioctl_meteor.h &&
3618   check_header dev/bktr/ioctl_bt848.h; } ||
3619 { check_header machine/ioctl_meteor.h &&
3620   check_header machine/ioctl_bt848.h; } ||
3621 { check_header dev/video/meteor/ioctl_meteor.h &&
3622   check_header dev/video/bktr/ioctl_bt848.h; } ||
3623 check_header dev/ic/bt8xx.h
3624
3625 check_header sndio.h
3626 check_header sys/soundcard.h
3627 check_header soundcard.h
3628
3629 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3630
3631 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3632     check_func jack_port_get_latency_range -ljack
3633
3634 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3635
3636 if enabled libcdio; then
3637     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3638 fi
3639
3640 enabled x11grab                                           &&
3641 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3642 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3643 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3644
3645 enabled vdpau &&
3646     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3647     disable vdpau
3648
3649 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3650
3651 # add some useful compiler flags if supported
3652 check_cflags -Wall
3653 check_cflags -Wno-parentheses
3654 check_cflags -Wno-switch
3655 check_cflags -Wno-format-zero-length
3656 check_cflags -Wdisabled-optimization
3657 check_cflags -Wpointer-arith
3658 check_cflags -Wredundant-decls
3659 check_cflags -Wno-pointer-sign
3660 check_cflags -Wcast-qual
3661 check_cflags -Wwrite-strings
3662 check_cflags -Wtype-limits
3663 check_cflags -Wundef
3664 check_cflags -Wmissing-prototypes
3665 check_cflags -Wstrict-prototypes
3666 enabled extra_warnings && check_cflags -Winline
3667
3668 # add some linker flags
3669 check_ldflags -Wl,--warn-common
3670 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3671 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3672
3673 enabled xmm_clobber_test &&
3674     check_ldflags -Wl,--wrap,avcodec_open2              \
3675                   -Wl,--wrap,avcodec_decode_audio4      \
3676                   -Wl,--wrap,avcodec_decode_video2      \
3677                   -Wl,--wrap,avcodec_decode_subtitle2   \
3678                   -Wl,--wrap,avcodec_encode_audio2      \
3679                   -Wl,--wrap,avcodec_encode_video       \
3680                   -Wl,--wrap,avcodec_encode_subtitle    \
3681                   -Wl,--wrap,sws_scale ||
3682     disable xmm_clobber_test
3683
3684 echo "X{};" > $TMPV
3685 if test_ldflags -Wl,--version-script,$TMPV; then
3686     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3687     check_cc <<EOF && enable symver_asm_label
3688 void ff_foo(void) __asm__ ("av_foo@VERSION");
3689 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3690 EOF
3691     check_cc <<EOF && enable symver_gnu_asm
3692 __asm__(".symver ff_foo,av_foo@VERSION");
3693 void ff_foo(void) {}
3694 EOF
3695 fi
3696
3697 if [ -z "$optflags" ]; then
3698     if enabled small; then
3699         optflags=$cflags_size
3700     elif enabled optimizations; then
3701         optflags=$cflags_speed
3702     else
3703         optflags=$cflags_noopt
3704     fi
3705 fi
3706
3707 check_optflags(){
3708     check_cflags "$@"
3709     enabled lto && check_ldflags "$@"
3710 }
3711
3712
3713 if enabled lto; then
3714     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3715     check_cflags  -flto
3716     check_ldflags -flto $cpuflags
3717 fi
3718
3719 check_optflags $optflags
3720 check_optflags -fno-math-errno
3721 check_optflags -fno-signed-zeros
3722
3723 if enabled icc; then
3724     # Just warnings, no remarks
3725     check_cflags -w1
3726     # -wd: Disable following warnings
3727     # 144, 167, 556: -Wno-pointer-sign
3728     # 1292: attribute "foo" ignored
3729     # 1419: external declaration in primary source file
3730     # 10006: ignoring unknown option -fno-signed-zeros
3731     # 10148: ignoring unknown option -Wno-parentheses
3732     # 10156: ignoring option '-W'; no argument required
3733     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3734     # 11030: Warning unknown option --as-needed
3735     # 10156: ignoring option '-export'; no argument required
3736     check_ldflags -wd10156,11030
3737     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3738     enable ebp_available
3739     if enabled x86_32; then
3740         icc_version=$($cc -dumpversion)
3741         test ${icc_version%%.*} -ge 11 &&
3742             check_cflags -falign-stack=maintain-16-byte ||
3743             disable aligned_stack
3744     fi
3745 elif enabled ccc; then
3746     # disable some annoying warnings
3747     add_cflags -msg_disable bitnotint
3748     add_cflags -msg_disable mixfuncvoid
3749     add_cflags -msg_disable nonstandcast
3750     add_cflags -msg_disable unsupieee
3751 elif enabled gcc; then
3752     check_optflags -fno-tree-vectorize
3753     check_cflags -Werror=implicit-function-declaration
3754     check_cflags -Werror=missing-prototypes
3755     check_cflags -Werror=return-type
3756     check_cflags -Werror=vla
3757 elif enabled llvm_gcc; then
3758     check_cflags -mllvm -stack-alignment=16
3759 elif enabled clang; then
3760     check_cflags -mllvm -stack-alignment=16
3761     check_cflags -Qunused-arguments
3762     check_cflags -Werror=implicit-function-declaration
3763     check_cflags -Werror=missing-prototypes
3764     check_cflags -Werror=return-type
3765 elif enabled armcc; then
3766     # 2523: use of inline assembler is deprecated
3767     add_cflags -W${armcc_opt},--diag_suppress=2523
3768     add_cflags -W${armcc_opt},--diag_suppress=1207
3769     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3770     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3771     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3772     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3773 elif enabled tms470; then
3774     add_cflags -pds=824 -pds=837
3775 elif enabled pathscale; then
3776     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3777 elif enabled msvc; then
3778     enabled x86_32 && disable aligned_stack
3779 fi
3780
3781 case $target_os in
3782     osf1)
3783         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3784     ;;
3785     plan9)
3786         add_cppflags -Dmain=plan9_main
3787     ;;
3788 esac
3789
3790 enabled_any $THREADS_LIST      && enable threads
3791
3792 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3793
3794 check_deps $CONFIG_LIST       \
3795            $CONFIG_EXTRA      \
3796            $HAVE_LIST         \
3797            $ALL_COMPONENTS    \
3798
3799 ! enabled_any memalign posix_memalign aligned_malloc &&
3800     enabled_any $need_memalign && enable memalign_hack
3801
3802 echo "install prefix            $prefix"
3803 echo "source path               $source_path"
3804 echo "C compiler                $cc"
3805 echo "ARCH                      $arch ($cpu)"
3806 if test "$build_suffix" != ""; then
3807     echo "build suffix              $build_suffix"
3808 fi
3809 if test "$extra_version" != ""; then
3810     echo "version string suffix     $extra_version"
3811 fi
3812 echo "big-endian                ${bigendian-no}"
3813 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3814 if enabled x86; then
3815     echo "${yasmexe}                      ${yasm-no}"
3816     echo "MMX enabled               ${mmx-no}"
3817     echo "MMXEXT enabled            ${mmxext-no}"
3818     echo "3DNow! enabled            ${amd3dnow-no}"
3819     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3820     echo "SSE enabled               ${sse-no}"
3821     echo "SSSE3 enabled             ${ssse3-no}"
3822     echo "AVX enabled               ${avx-no}"
3823     echo "FMA4 enabled              ${fma4-no}"
3824     echo "CMOV enabled              ${cmov-no}"
3825     echo "CMOV is fast              ${fast_cmov-no}"
3826     echo "EBX available             ${ebx_available-no}"
3827     echo "EBP available             ${ebp_available-no}"
3828 fi
3829 if enabled arm; then
3830     echo "ARMv5TE enabled           ${armv5te-no}"
3831     echo "ARMv6 enabled             ${armv6-no}"
3832     echo "ARMv6T2 enabled           ${armv6t2-no}"
3833     echo "VFP enabled               ${vfp-no}"
3834     echo "NEON enabled              ${neon-no}"
3835 fi
3836 if enabled ppc; then
3837     echo "AltiVec enabled           ${altivec-no}"
3838     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3839     echo "dcbzl available           ${dcbzl-no}"
3840 fi
3841 if enabled sparc; then
3842     echo "VIS enabled               ${vis-no}"
3843 fi
3844 echo "debug symbols             ${debug-no}"
3845 echo "optimize for size         ${small-no}"
3846 echo "optimizations             ${optimizations-no}"
3847 echo "static                    ${static-no}"
3848 echo "shared                    ${shared-no}"
3849 echo "new filter support        ${avfilter-no}"
3850 echo "network support           ${network-no}"
3851 echo "threading support         ${thread_type-no}"
3852 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3853 echo "SDL support               ${sdl-no}"
3854 test -n "$random_seed" &&
3855     echo "random seed               ${random_seed}"
3856 echo
3857
3858 echo "External libraries:"
3859 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3860 echo
3861
3862 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3863     echo "Enabled ${type}s:"
3864     eval list=\$$(toupper $type)_LIST
3865     print_enabled '_*' $list | print_3_columns
3866     echo
3867 done
3868
3869 license="LGPL version 2.1 or later"
3870 if enabled nonfree; then
3871     license="nonfree and unredistributable"
3872 elif enabled gplv3; then
3873     license="GPL version 3 or later"
3874 elif enabled lgplv3; then
3875     license="LGPL version 3 or later"
3876 elif enabled gpl; then
3877     license="GPL version 2 or later"
3878 fi
3879
3880 echo "License: $license"
3881
3882 echo "Creating config.mak and config.h..."
3883
3884 test -e Makefile || $ln_s "$source_path/Makefile" .
3885
3886 config_files="$TMPH config.mak"
3887
3888 cat > config.mak <<EOF
3889 # Automatically generated by configure - do not modify!
3890 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3891 prefix=$prefix
3892 LIBDIR=\$(DESTDIR)$libdir
3893 SHLIBDIR=\$(DESTDIR)$shlibdir
3894 INCDIR=\$(DESTDIR)$incdir
3895 BINDIR=\$(DESTDIR)$bindir
3896 DATADIR=\$(DESTDIR)$datadir
3897 MANDIR=\$(DESTDIR)$mandir
3898 SRC_PATH=$source_path
3899 CC_IDENT=$cc_ident
3900 ARCH=$arch
3901 CC=$cc
3902 AS=$as
3903 LD=$ld
3904 DEPCC=$dep_cc
3905 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3906 DEPAS=$as
3907 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3908 YASM=$yasmexe
3909 DEPYASM=$yasmexe
3910 AR=$ar
3911 ARFLAGS=$arflags
3912 AR_O=$ar_o
3913 RANLIB=$ranlib
3914 LN_S=$ln_s
3915 CPPFLAGS=$CPPFLAGS
3916 CFLAGS=$CFLAGS
3917 ASFLAGS=$ASFLAGS
3918 AS_C=$AS_C
3919 AS_O=$AS_O
3920 CC_C=$CC_C
3921 CC_E=$CC_E
3922 CC_O=$CC_O
3923 LD_O=$LD_O
3924 LD_LIB=$LD_LIB
3925 LD_PATH=$LD_PATH
3926 DLLTOOL=$dlltool
3927 LDFLAGS=$LDFLAGS
3928 LDFLAGS-avserver=$AVSERVERLDFLAGS
3929 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
3930 YASMFLAGS=$YASMFLAGS
3931 BUILDSUF=$build_suffix
3932 FULLNAME=$FULLNAME
3933 LIBPREF=$LIBPREF
3934 LIBSUF=$LIBSUF
3935 LIBNAME=$LIBNAME
3936 SLIBPREF=$SLIBPREF
3937 SLIBSUF=$SLIBSUF
3938 EXESUF=$EXESUF
3939 EXTRA_VERSION=$extra_version
3940 CCDEP=$CCDEP
3941 CCDEP_FLAGS=$CCDEP_FLAGS
3942 ASDEP=$ASDEP
3943 ASDEP_FLAGS=$ASDEP_FLAGS
3944 CC_DEPFLAGS=$CC_DEPFLAGS
3945 AS_DEPFLAGS=$AS_DEPFLAGS
3946 HOSTCC=$host_cc
3947 HOSTLD=$host_ld
3948 HOSTCFLAGS=$host_cflags
3949 HOSTCPPFLAGS=$host_cppflags
3950 HOSTEXESUF=$HOSTEXESUF
3951 HOSTLDFLAGS=$host_ldflags
3952 HOSTLIBS=$host_libs
3953 DEPHOSTCC=$host_cc
3954 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
3955 HOSTCCDEP=$HOSTCCDEP
3956 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
3957 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
3958 HOSTCC_C=$HOSTCC_C
3959 HOSTCC_O=$HOSTCC_O
3960 HOSTLD_O=$HOSTLD_O
3961 TARGET_EXEC=$target_exec
3962 TARGET_PATH=$target_path
3963 LIBS-avplay=$sdl_libs
3964 CFLAGS-avplay=$sdl_cflags
3965 ZLIB=$($ldflags_filter -lz)
3966 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3967 EXTRALIBS=$extralibs
3968 COMPAT_OBJS=$compat_objs
3969 EXEOBJS=$exeobjs
3970 INSTALL=install
3971 LIBTARGET=${LIBTARGET}
3972 SLIBNAME=${SLIBNAME}
3973 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3974 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3975 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3976 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3977 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3978 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3979 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3980 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3981 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
3982 EOF
3983
3984 get_version(){
3985     lcname=lib${1}
3986     name=$(toupper $lcname)
3987     file=$source_path/$lcname/version.h
3988     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
3989     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3990     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3991     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3992     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
3993 }
3994
3995 map 'get_version $v' $LIBRARY_LIST
3996
3997 cat > $TMPH <<EOF
3998 /* Automatically generated by configure - do not modify! */
3999 #ifndef LIBAV_CONFIG_H
4000 #define LIBAV_CONFIG_H
4001 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4002 #define LIBAV_LICENSE "$(c_escape $license)"
4003 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4004 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4005 #define restrict $_restrict
4006 #define EXTERN_PREFIX "${extern_prefix}"
4007 #define EXTERN_ASM ${extern_prefix}
4008 #define SLIBSUF "$SLIBSUF"
4009 EOF
4010
4011 test -n "$malloc_prefix" &&
4012     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4013
4014 if enabled yasm; then
4015     append config_files $TMPASM
4016     printf '' >$TMPASM
4017 fi
4018
4019 print_config ARCH_   "$config_files" $ARCH_LIST
4020 print_config HAVE_   "$config_files" $HAVE_LIST
4021 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4022                                      $CONFIG_EXTRA      \
4023                                      $ALL_COMPONENTS    \
4024
4025 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4026
4027 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4028 cp_if_changed $TMPH config.h
4029 touch .config
4030
4031 enabled yasm && cp_if_changed $TMPASM config.asm
4032
4033 cat > $TMPH <<EOF
4034 /* Generated by ffconf */
4035 #ifndef AVUTIL_AVCONFIG_H
4036 #define AVUTIL_AVCONFIG_H
4037 EOF
4038
4039 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4040
4041 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4042
4043 cp_if_changed $TMPH libavutil/avconfig.h
4044
4045 test -n "$WARNINGS" && printf "\n$WARNINGS"
4046
4047 # build pkg-config files
4048
4049 pkgconfig_generate(){
4050     name=$1
4051     shortname=${name#lib}${build_suffix}
4052     comment=$2
4053     version=$3
4054     libs=$4
4055     requires=$5
4056     enabled ${name#lib} || return 0
4057     mkdir -p $name
4058     cat <<EOF > $name/$name.pc
4059 prefix=$prefix
4060 exec_prefix=\${prefix}
4061 libdir=$libdir
4062 includedir=$incdir
4063
4064 Name: $name
4065 Description: $comment
4066 Version: $version
4067 Requires: $(enabled shared || echo $requires)
4068 Requires.private: $(enabled shared && echo $requires)
4069 Conflicts:
4070 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4071 Libs.private: $(enabled shared && echo $libs)
4072 Cflags: -I\${includedir}
4073 EOF
4074     cat <<EOF > $name/$name-uninstalled.pc
4075 prefix=
4076 exec_prefix=
4077 libdir=\${pcfiledir}
4078 includedir=${source_path}
4079
4080 Name: $name
4081 Description: $comment
4082 Version: $version
4083 Requires: $requires
4084 Conflicts:
4085 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4086 Cflags: -I\${includedir}
4087 EOF
4088 }
4089
4090 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4091 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4092 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4093 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4094 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4095 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4096 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"