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
 104 Program options:
 105   --disable-programs       do not build command line programs
 106   --disable-avconv         disable avconv build
 107   --disable-avplay         disable avplay build
 108   --disable-avprobe        disable avprobe build
 109   --disable-avserver       disable avserver build
 110
 111 Component options:
 112   --disable-doc            do not build documentation
 113   --disable-avdevice       disable libavdevice build
 114   --disable-avcodec        disable libavcodec build
 115   --disable-avformat       disable libavformat build
 116   --disable-avutil         disable libavutil build
 117   --disable-swscale        disable libswscale build
 118   --disable-avfilter       disable video filter support [no]
 119   --disable-avresample     disable libavresample build [no]
 120   --disable-pthreads       disable pthreads [auto]
 121   --disable-w32threads     disable Win32 threads [auto]
 122   --enable-x11grab         enable X11 grabbing [no]
 123   --disable-network        disable network support [no]
 124   --disable-dct            disable DCT code
 125   --disable-dwt            disable DWT code
 126   --disable-lsp            disable LSP code
 127   --disable-lzo            disable LZO decoder code
 128   --disable-mdct           disable MDCT code
 129   --disable-rdft           disable RDFT code
 130   --disable-fft            disable FFT code
 131   --enable-dxva2           enable DXVA2 code
 132   --enable-vaapi           enable VAAPI code
 133   --enable-vda             enable VDA code
 134   --enable-vdpau           enable VDPAU code
 135
 136 Individual component options:
 137   --disable-everything     disable all components listed below
 138   --disable-encoder=NAME   disable encoder NAME
 139   --enable-encoder=NAME    enable encoder NAME
 140   --disable-encoders       disable all encoders
 141   --disable-decoder=NAME   disable decoder NAME
 142   --enable-decoder=NAME    enable decoder NAME
 143   --disable-decoders       disable all decoders
 144   --disable-hwaccel=NAME   disable hwaccel NAME
 145   --enable-hwaccel=NAME    enable hwaccel NAME
 146   --disable-hwaccels       disable all hwaccels
 147   --disable-muxer=NAME     disable muxer NAME
 148   --enable-muxer=NAME      enable muxer NAME
 149   --disable-muxers         disable all muxers
 150   --disable-demuxer=NAME   disable demuxer NAME
 151   --enable-demuxer=NAME    enable demuxer NAME
 152   --disable-demuxers       disable all demuxers
 153   --enable-parser=NAME     enable parser NAME
 154   --disable-parser=NAME    disable parser NAME
 155   --disable-parsers        disable all parsers
 156   --enable-bsf=NAME        enable bitstream filter NAME
 157   --disable-bsf=NAME       disable bitstream filter NAME
 158   --disable-bsfs           disable all bitstream filters
 159   --enable-protocol=NAME   enable protocol NAME
 160   --disable-protocol=NAME  disable protocol NAME
 161   --disable-protocols      disable all protocols
 162   --enable-indev=NAME      enable input device NAME
 163   --disable-indev=NAME     disable input device NAME
 164   --disable-indevs         disable input devices
 165   --enable-outdev=NAME     enable output device NAME
 166   --disable-outdev=NAME    disable output device NAME
 167   --disable-outdevs        disable output devices
 168   --disable-devices        disable all devices
 169   --enable-filter=NAME     enable filter NAME
 170   --disable-filter=NAME    disable filter NAME
 171   --disable-filters        disable all filters
 172
 173 External library support:
 174   --enable-avisynth        enable reading of AVISynth script files [no]
 175   --enable-bzlib           enable bzlib [autodetect]
 176   --enable-frei0r          enable frei0r video filtering
 177   --enable-gnutls          enable gnutls [no]
 178   --enable-libcdio         enable audio CD grabbing with libcdio
 179   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 180                            and libraw1394 [no]
 181   --enable-libfaac         enable AAC encoding via libfaac [no]
 182   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 183   --enable-libfreetype     enable libfreetype [no]
 184   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 185   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 186   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 187   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 188   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 189   --enable-libopencv       enable video filtering via libopencv [no]
 190   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 191   --enable-libopus         enable Opus decoding via libopus [no]
 192   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 193   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 194   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 195   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 196   --enable-libtheora       enable Theora encoding via libtheora [no]
 197   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 198   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 199   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 200   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
 201   --enable-libx264         enable H.264 encoding via x264 [no]
 202   --enable-libxavs         enable AVS encoding via xavs [no]
 203   --enable-libxvid         enable Xvid encoding via xvidcore,
 204                            native MPEG-4/Xvid encoder exists [no]
 205   --enable-openssl         enable openssl [no]
 206   --enable-zlib            enable zlib [autodetect]
 207
 208 Advanced options (experts only):
 209   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 210   --enable-cross-compile   assume a cross-compiler is used
 211   --sysroot=PATH           root of cross-build tree
 212   --sysinclude=PATH        location of cross-build system headers
 213   --target-os=OS           compiler targets OS [$target_os]
 214   --target-exec=CMD        command to run executables on target
 215   --target-path=DIR        path to view of build directory on target
 216   --toolchain=NAME         set tool defaults according to NAME
 217   --nm=NM                  use nm tool
 218   --ar=AR                  use archive tool AR [$ar_default]
 219   --as=AS                  use assembler AS [$as_default]
 220   --cc=CC                  use C compiler CC [$cc_default]
 221   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 222   --ld=LD                  use linker LD
 223   --host-cc=HOSTCC         use host C compiler HOSTCC
 224   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 225   --host-ld=HOSTLD         use host linker HOSTLD
 226   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 227   --host-libs=HLIBS        use libs HLIBS when linking for host
 228   --host-os=OS             compiler host OS [$target_os]
 229   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 230   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 231   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 232   --extra-version=STRING   version string suffix []
 233   --optflags=OPTFLAGS      override optimization-related compiler flags
 234   --build-suffix=SUFFIX    library name suffix []
 235   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 236   --arch=ARCH              select architecture [$arch]
 237   --cpu=CPU                select the minimum required CPU (affects
 238                            instruction selection, may crash on older CPUs)
 239   --enable-pic             build position-independent code
 240   --enable-sram            allow use of on-chip SRAM
 241   --enable-thumb           compile for Thumb instruction set
 242   --disable-symver         disable symbol versioning
 243   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 244   --disable-safe-bitstream-reader
 245                            disable buffer boundary checking in bitreaders
 246                            (faster, but may crash)
 247   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 248   --enable-lto             use link-time optimization
 249
 250 Optimization options (experts only):
 251   --disable-asm            disable all assembler optimizations
 252   --disable-altivec        disable AltiVec optimizations
 253   --disable-amd3dnow       disable 3DNow! optimizations
 254   --disable-amd3dnowext    disable 3DNow! extended optimizations
 255   --disable-mmx            disable MMX optimizations
 256   --disable-mmxext         disable MMXEXT optimizations
 257   --disable-sse            disable SSE optimizations
 258   --disable-sse2           disable SSE2 optimizations
 259   --disable-sse3           disable SSE3 optimizations
 260   --disable-ssse3          disable SSSE3 optimizations
 261   --disable-sse4           disable SSE4 optimizations
 262   --disable-sse42          disable SSE4.2 optimizations
 263   --disable-avx            disable AVX optimizations
 264   --disable-fma4           disable FMA4 optimizations
 265   --disable-armv5te        disable armv5te optimizations
 266   --disable-armv6          disable armv6 optimizations
 267   --disable-armv6t2        disable armv6t2 optimizations
 268   --disable-vfp            disable VFP optimizations
 269   --disable-neon           disable NEON optimizations
 270   --disable-vis            disable VIS optimizations
 271   --disable-inline-asm     disable use of inline assembler
 272   --disable-yasm           disable use of yasm assembler
 273
 274 Developer options (useful when working on Libav itself):
 275   --disable-debug          disable debugging symbols
 276   --enable-debug=LEVEL     set the debug level [$debuglevel]
 277   --disable-optimizations  disable compiler optimizations
 278   --enable-extra-warnings  enable more compiler warnings
 279   --samples=PATH           location of test samples for FATE, if not set use
 280                            \$LIBAV_SAMPLES at make invocation time.
 281   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 282                            should be used only for debugging purposes)
 283   --enable-random          randomly enable/disable components
 284   --disable-random
 285   --enable-random=LIST     randomly enable/disable specific components or
 286   --disable-random=LIST    component groups. LIST is a comma-separated list
 287                            of NAME[:PROB] entries where NAME is a component
 288                            (group) and PROB the probability associated with
 289                            NAME (default 0.5).
 290   --random-seed=VALUE      seed value for --enable/disable-random
 291
 292 NOTE: Object files are built at the place where configure is launched.
 293 EOF
 294   exit 0
 295 }
 296
 297 quotes='""'
 298
 299 log(){
 300     echo "$@" >> $logfile
 301 }
 302
 303 log_file(){
 304     log BEGIN $1
 305     pr -n -t $1 >> $logfile
 306     log END $1
 307 }
 308
 309 echolog(){
 310     log "$@"
 311     echo "$@"
 312 }
 313
 314 warn(){
 315     log "WARNING: $*"
 316     WARNINGS="${WARNINGS}WARNING: $*\n"
 317 }
 318
 319 die(){
 320     echolog "$@"
 321     cat <<EOF
 322
 323 If you think configure made a mistake, make sure you are using the latest
 324 version from Git.  If the latest version fails, report the problem to the
 325 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 326 EOF
 327     if disabled logging; then
 328         cat <<EOF
 329 Rerun configure with logging enabled (do not use --disable-logging), and
 330 include the log this produces with your report.
 331 EOF
 332     else
 333         cat <<EOF
 334 Include the log file "$logfile" produced by configure as this will help
 335 solving the problem.
 336 EOF
 337     fi
 338     exit 1
 339 }
 340
 341 # Avoid locale weirdness, besides we really just want to translate ASCII.
 342 toupper(){
 343     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 344 }
 345
 346 tolower(){
 347     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 348 }
 349
 350 c_escape(){
 351     echo "$*" | sed 's/["\\]/\\\0/g'
 352 }
 353
 354 sh_quote(){
 355     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 356     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 357     echo "$v"
 358 }
 359
 360 cleanws(){
 361     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 362 }
 363
 364 filter(){
 365     pat=$1
 366     shift
 367     for v; do
 368         eval "case $v in $pat) echo $v ;; esac"
 369     done
 370 }
 371
 372 filter_out(){
 373     pat=$1
 374     shift
 375     for v; do
 376         eval "case $v in $pat) ;; *) echo $v ;; esac"
 377     done
 378 }
 379
 380 map(){
 381     m=$1
 382     shift
 383     for v; do eval $m; done
 384 }
 385
 386 add_suffix(){
 387     suffix=$1
 388     shift
 389     for v; do echo ${v}${suffix}; done
 390 }
 391
 392 set_all(){
 393     value=$1
 394     shift
 395     for var in $*; do
 396         eval $var=$value
 397     done
 398 }
 399
 400 set_weak(){
 401     value=$1
 402     shift
 403     for var; do
 404         eval : \${$var:=$value}
 405     done
 406 }
 407
 408 set_safe(){
 409     var=$1
 410     shift
 411     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 412 }
 413
 414 get_safe(){
 415     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 416 }
 417
 418 pushvar(){
 419     for var in $*; do
 420         eval level=\${${var}_level:=0}
 421         eval ${var}_${level}="\$$var"
 422         eval ${var}_level=$(($level+1))
 423     done
 424 }
 425
 426 popvar(){
 427     for var in $*; do
 428         eval level=\${${var}_level:-0}
 429         test $level = 0 && continue
 430         eval level=$(($level-1))
 431         eval $var="\${${var}_${level}}"
 432         eval ${var}_level=$level
 433         eval unset ${var}_${level}
 434     done
 435 }
 436
 437 enable(){
 438     set_all yes $*
 439 }
 440
 441 disable(){
 442     set_all no $*
 443 }
 444
 445 enable_weak(){
 446     set_weak yes $*
 447 }
 448
 449 disable_weak(){
 450     set_weak no $*
 451 }
 452
 453 enable_safe(){
 454     for var; do
 455         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 456     done
 457 }
 458
 459 disable_safe(){
 460     for var; do
 461         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 462     done
 463 }
 464
 465 do_enable_deep(){
 466     for var; do
 467         enabled $var && continue
 468         eval sel="\$${var}_select"
 469         eval sgs="\$${var}_suggest"
 470         pushvar var sgs
 471         enable_deep $sel
 472         popvar sgs
 473         enable_deep_weak $sgs
 474         popvar var
 475     done
 476 }
 477
 478 enable_deep(){
 479     do_enable_deep $*
 480     enable $*
 481 }
 482
 483 enable_deep_weak(){
 484     do_enable_deep $*
 485     enable_weak $*
 486 }
 487
 488 enabled(){
 489     test "${1#!}" = "$1" && op== || op=!=
 490     eval test "x\$${1#!}" $op "xyes"
 491 }
 492
 493 disabled(){
 494     test "${1#!}" = "$1" && op== || op=!=
 495     eval test "x\$${1#!}" $op "xno"
 496 }
 497
 498 enabled_all(){
 499     for opt; do
 500         enabled $opt || return 1
 501     done
 502 }
 503
 504 disabled_all(){
 505     for opt; do
 506         disabled $opt || return 1
 507     done
 508 }
 509
 510 enabled_any(){
 511     for opt; do
 512         enabled $opt && return 0
 513     done
 514 }
 515
 516 disabled_any(){
 517     for opt; do
 518         disabled $opt && return 0
 519     done
 520     return 1
 521 }
 522
 523 set_default(){
 524     for opt; do
 525         eval : \${$opt:=\$${opt}_default}
 526     done
 527 }
 528
 529 is_in(){
 530     value=$1
 531     shift
 532     for var in $*; do
 533         [ $var = $value ] && return 0
 534     done
 535     return 1
 536 }
 537
 538 do_check_deps(){
 539     for cfg; do
 540         cfg="${cfg#!}"
 541         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 542         disabled ${cfg}_checking && continue
 543         enable ${cfg}_checking
 544         append allopts $cfg
 545
 546         eval dep_all="\$${cfg}_deps"
 547         eval dep_any="\$${cfg}_deps_any"
 548         eval dep_sel="\$${cfg}_select"
 549         eval dep_sgs="\$${cfg}_suggest"
 550         eval dep_ifa="\$${cfg}_if"
 551         eval dep_ifn="\$${cfg}_if_any"
 552
 553         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 554         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 555         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 556
 557         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 558         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 559         enabled_all  $dep_all || disable $cfg
 560         enabled_any  $dep_any || disable $cfg
 561         disabled_any $dep_sel && disable $cfg
 562
 563         if enabled $cfg; then
 564             enable_deep $dep_sel
 565             enable_deep_weak $dep_sgs
 566         fi
 567
 568         disable ${cfg}_checking
 569     done
 570 }
 571
 572 check_deps(){
 573     unset allopts
 574
 575     do_check_deps "$@"
 576
 577     for cfg in $allopts; do
 578         enabled $cfg || continue
 579         eval dep_extralibs="\$${cfg}_extralibs"
 580         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 581     done
 582 }
 583
 584 print_config(){
 585     pfx=$1
 586     files=$2
 587     shift 2
 588     map 'eval echo "$v \${$v:-no}"' "$@" |
 589     awk "BEGIN { split(\"$files\", files) }
 590         {
 591             c = \"$pfx\" toupper(\$1);
 592             v = \$2;
 593             sub(/yes/, 1, v);
 594             sub(/no/,  0, v);
 595             for (f in files) {
 596                 file = files[f];
 597                 if (file ~ /\\.h\$/) {
 598                     printf(\"#define %s %d\\n\", c, v) >>file;
 599                 } else if (file ~ /\\.asm\$/) {
 600                     printf(\"%%define %s %d\\n\", c, v) >>file;
 601                 } else if (file ~ /\\.mak\$/) {
 602                     n = -v ? \"\" : \"!\";
 603                     printf(\"%s%s=yes\\n\", n, c) >>file;
 604                 }
 605             }
 606         }"
 607 }
 608
 609 print_enabled(){
 610     suf=$1
 611     shift
 612     for v; do
 613         enabled $v && printf "%s\n" ${v%$suf};
 614     done
 615 }
 616
 617 append(){
 618     var=$1
 619     shift
 620     eval "$var=\"\$$var $*\""
 621 }
 622
 623 prepend(){
 624     var=$1
 625     shift
 626     eval "$var=\"$* \$$var\""
 627 }
 628
 629 add_cppflags(){
 630     append CPPFLAGS "$@"
 631 }
 632
 633 add_cflags(){
 634     append CFLAGS $($cflags_filter "$@")
 635 }
 636
 637 add_asflags(){
 638     append ASFLAGS $($asflags_filter "$@")
 639 }
 640
 641 add_ldflags(){
 642     append LDFLAGS $($ldflags_filter "$@")
 643 }
 644
 645 add_extralibs(){
 646     prepend extralibs $($ldflags_filter "$@")
 647 }
 648
 649 add_host_cflags(){
 650     append host_cflags $($host_cflags_filter "$@")
 651 }
 652
 653 add_host_ldflags(){
 654     append host_ldflags $($host_ldflags_filter "$@")
 655 }
 656
 657 add_compat(){
 658     append compat_objs $1
 659     shift
 660     map 'add_cppflags -D$v' "$@"
 661 }
 662
 663 check_cmd(){
 664     log "$@"
 665     "$@" >> $logfile 2>&1
 666 }
 667
 668 cc_o(){
 669     eval printf '%s\\n' $CC_O
 670 }
 671
 672 cc_e(){
 673     eval printf '%s\\n' $CC_E
 674 }
 675
 676 check_cc(){
 677     log check_cc "$@"
 678     cat > $TMPC
 679     log_file $TMPC
 680     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 681 }
 682
 683 check_cpp(){
 684     log check_cpp "$@"
 685     cat > $TMPC
 686     log_file $TMPC
 687     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 688 }
 689
 690 as_o(){
 691     eval printf '%s\\n' $AS_O
 692 }
 693
 694 check_as(){
 695     log check_as "$@"
 696     cat > $TMPS
 697     log_file $TMPS
 698     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 699 }
 700
 701 check_inline_asm(){
 702     log check_inline_asm "$@"
 703     name="$1"
 704     code="$2"
 705     shift 2
 706     disable $name
 707     check_cc "$@" <<EOF && enable $name
 708 void foo(void){ __asm__ volatile($code); }
 709 EOF
 710 }
 711
 712 check_insn(){
 713     log check_insn "$@"
 714     check_inline_asm ${1}_inline "\"$2\""
 715     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 716 }
 717
 718 check_yasm(){
 719     log check_yasm "$@"
 720     echo "$1" > $TMPS
 721     log_file $TMPS
 722     shift 1
 723     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 724 }
 725
 726 ld_o(){
 727     eval printf '%s\\n' $LD_O
 728 }
 729
 730 check_ld(){
 731     log check_ld "$@"
 732     flags=$(filter_out '-l*' "$@")
 733     libs=$(filter '-l*' "$@")
 734     check_cc $($cflags_filter $flags) || return
 735     flags=$($ldflags_filter $flags)
 736     libs=$($ldflags_filter $libs)
 737     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 738 }
 739
 740 check_code(){
 741     log check_code "$@"
 742     check=$1
 743     headers=$2
 744     code=$3
 745     shift 3
 746     {
 747         for hdr in $headers; do
 748             echo "#include <$hdr>"
 749         done
 750         echo "int main(void) { $code; return 0; }"
 751     } | check_$check "$@"
 752 }
 753
 754 check_cppflags(){
 755     log check_cppflags "$@"
 756     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 757 int x;
 758 EOF
 759 }
 760
 761 check_cflags(){
 762     log check_cflags "$@"
 763     set -- $($cflags_filter "$@")
 764     check_cc "$@" <<EOF && append CFLAGS "$@"
 765 int x;
 766 EOF
 767 }
 768
 769 test_ldflags(){
 770     log test_ldflags "$@"
 771     check_ld "$@" <<EOF
 772 int main(void){ return 0; }
 773 EOF
 774 }
 775
 776 check_ldflags(){
 777     log check_ldflags "$@"
 778     test_ldflags "$@" && add_ldflags "$@"
 779 }
 780
 781 check_header(){
 782     log check_header "$@"
 783     header=$1
 784     shift
 785     disable_safe $header
 786     check_cpp "$@" <<EOF && enable_safe $header
 787 #include <$header>
 788 int x;
 789 EOF
 790 }
 791
 792 check_func(){
 793     log check_func "$@"
 794     func=$1
 795     shift
 796     disable $func
 797     check_ld "$@" <<EOF && enable $func
 798 extern int $func();
 799 int main(void){ $func(); }
 800 EOF
 801 }
 802
 803 check_mathfunc(){
 804     log check_mathfunc "$@"
 805     func=$1
 806     narg=$2
 807     shift 2
 808     test $narg = 2 && args="f, g" || args="f"
 809     disable $func
 810     check_ld "$@" <<EOF && enable $func
 811 #include <math.h>
 812 float foo(float f, float g) { return $func($args); }
 813 int main(void){ return 0; }
 814 EOF
 815 }
 816
 817 check_func_headers(){
 818     log check_func_headers "$@"
 819     headers=$1
 820     funcs=$2
 821     shift 2
 822     {
 823         for hdr in $headers; do
 824             echo "#include <$hdr>"
 825         done
 826         for func in $funcs; do
 827             echo "long check_$func(void) { return (long) $func; }"
 828         done
 829         echo "int main(void) { return 0; }"
 830     } | check_ld "$@" && enable $funcs && enable_safe $headers
 831 }
 832
 833 check_cpp_condition(){
 834     log check_cpp_condition "$@"
 835     header=$1
 836     condition=$2
 837     shift 2
 838     check_cpp "$@" <<EOF
 839 #include <$header>
 840 #if !($condition)
 841 #error "unsatisfied condition: $condition"
 842 #endif
 843 EOF
 844 }
 845
 846 check_lib(){
 847     log check_lib "$@"
 848     header="$1"
 849     func="$2"
 850     shift 2
 851     check_header $header && check_func $func "$@" && add_extralibs "$@"
 852 }
 853
 854 check_lib2(){
 855     log check_lib2 "$@"
 856     headers="$1"
 857     funcs="$2"
 858     shift 2
 859     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 860 }
 861
 862 check_pkg_config(){
 863     log check_pkg_config "$@"
 864     pkg="$1"
 865     headers="$2"
 866     funcs="$3"
 867     shift 3
 868     $pkg_config --exists $pkg || return
 869     pkg_cflags=$($pkg_config --cflags $pkg)
 870     pkg_libs=$($pkg_config --libs $pkg)
 871     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 872         set_safe ${pkg}_cflags $pkg_cflags   &&
 873         set_safe ${pkg}_libs   $pkg_libs
 874 }
 875
 876 check_exec(){
 877     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 878 }
 879
 880 check_exec_crash(){
 881     code=$(cat)
 882
 883     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 884     # are safe but may not be available everywhere.  Thus we use
 885     # raise(SIGTERM) instead.  The check is run in a subshell so we
 886     # can redirect the "Terminated" message from the shell.  SIGBUS
 887     # is not defined by standard C so it is used conditionally.
 888
 889     (check_exec "$@") >> $logfile 2>&1 <<EOF
 890 #include <signal.h>
 891 static void sighandler(int sig){
 892     raise(SIGTERM);
 893 }
 894 int foo(void){
 895     $code
 896 }
 897 int main(void){
 898     signal(SIGILL, sighandler);
 899     signal(SIGFPE, sighandler);
 900     signal(SIGSEGV, sighandler);
 901 #ifdef SIGBUS
 902     signal(SIGBUS, sighandler);
 903 #endif
 904     foo();
 905 }
 906 EOF
 907 }
 908
 909 check_type(){
 910     log check_type "$@"
 911     headers=$1
 912     type=$2
 913     shift 2
 914     disable_safe "$type"
 915     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 916 }
 917
 918 check_struct(){
 919     log check_type "$@"
 920     headers=$1
 921     struct=$2
 922     member=$3
 923     shift 3
 924     disable_safe "${struct}_${member}"
 925     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 926         enable_safe "${struct}_${member}"
 927 }
 928
 929 require(){
 930     name="$1"
 931     header="$2"
 932     func="$3"
 933     shift 3
 934     check_lib $header $func "$@" || die "ERROR: $name not found"
 935 }
 936
 937 require2(){
 938     name="$1"
 939     headers="$2"
 940     func="$3"
 941     shift 3
 942     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 943 }
 944
 945 require_pkg_config(){
 946     pkg="$1"
 947     check_pkg_config "$@" || die "ERROR: $pkg not found"
 948     add_cflags    $(get_safe ${pkg}_cflags)
 949     add_extralibs $(get_safe ${pkg}_libs)
 950 }
 951
 952 hostcc_o(){
 953     eval printf '%s\\n' $HOSTCC_O
 954 }
 955
 956 check_host_cc(){
 957     log check_host_cc "$@"
 958     cat > $TMPC
 959     log_file $TMPC
 960     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
 961 }
 962
 963 check_host_cflags(){
 964     log check_host_cflags "$@"
 965     set -- $($host_cflags_filter "$@")
 966     check_host_cc "$@" <<EOF && append host_cflags "$@"
 967 int x;
 968 EOF
 969 }
 970
 971 apply(){
 972     file=$1
 973     shift
 974     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
 975 }
 976
 977 cp_if_changed(){
 978     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
 979     mkdir -p "$(dirname $2)"
 980     $cp_f "$1" "$2"
 981 }
 982
 983 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 984 # system-dependent things.
 985
 986 COMPONENT_LIST="
 987     bsfs
 988     decoders
 989     demuxers
 990     encoders
 991     filters
 992     hwaccels
 993     indevs
 994     muxers
 995     outdevs
 996     parsers
 997     protocols
 998 "
 999
1000 LIBRARY_LIST="
1001     avcodec
1002     avdevice
1003     avfilter
1004     avformat
1005     avresample
1006     avutil
1007     swscale
1008 "
1009
1010 PROGRAM_LIST="
1011     avconv
1012     avplay
1013     avprobe
1014     avserver
1015 "
1016
1017 CONFIG_LIST="
1018     $COMPONENT_LIST
1019     $LIBRARY_LIST
1020     $PROGRAM_LIST
1021     avisynth
1022     bzlib
1023     dct
1024     doc
1025     dwt
1026     dxva2
1027     fft
1028     frei0r
1029     gnutls
1030     gpl
1031     gray
1032     hardcoded_tables
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     lsp
1059     lzo
1060     mdct
1061     memalign_hack
1062     network
1063     nonfree
1064     openssl
1065     pic
1066     rdft
1067     runtime_cpudetect
1068     safe_bitstream_reader
1069     shared
1070     small
1071     sram
1072     static
1073     swscale_alpha
1074     thumb
1075     vaapi
1076     vda
1077     vdpau
1078     version3
1079     xmm_clobber_test
1080     x11grab
1081     zlib
1082 "
1083
1084 THREADS_LIST='
1085     pthreads
1086     w32threads
1087 '
1088
1089 ARCH_LIST='
1090     aarch64
1091     alpha
1092     arm
1093     avr32
1094     avr32_ap
1095     avr32_uc
1096     bfin
1097     ia64
1098     m68k
1099     mips
1100     mips64
1101     parisc
1102     ppc
1103     ppc64
1104     s390
1105     sh4
1106     sparc
1107     sparc64
1108     tilegx
1109     tilepro
1110     tomi
1111     x86
1112     x86_32
1113     x86_64
1114 '
1115
1116 ARCH_EXT_LIST_ARM='
1117     armv5te
1118     armv6
1119     armv6t2
1120     neon
1121     vfp
1122     vfpv3
1123 '
1124
1125 ARCH_EXT_LIST_X86='
1126     amd3dnow
1127     amd3dnowext
1128     avx
1129     fma4
1130     mmx
1131     mmxext
1132     sse
1133     sse2
1134     sse3
1135     sse4
1136     sse42
1137     ssse3
1138 '
1139
1140 ARCH_EXT_LIST="
1141     $ARCH_EXT_LIST_ARM
1142     $ARCH_EXT_LIST_X86
1143     altivec
1144     ppc4xx
1145     vis
1146 "
1147
1148 HAVE_LIST_CMDLINE='
1149     inline_asm
1150     symver
1151     yasm
1152 '
1153
1154 HAVE_LIST_PUB='
1155     bigendian
1156     fast_unaligned
1157 '
1158
1159 MATH_FUNCS="
1160     atanf
1161     atan2f
1162     cbrtf
1163     cosf
1164     exp2
1165     exp2f
1166     expf
1167     isinf
1168     isnan
1169     ldexpf
1170     llrint
1171     llrintf
1172     log2
1173     log2f
1174     log10f
1175     lrint
1176     lrintf
1177     powf
1178     rint
1179     round
1180     roundf
1181     sinf
1182     trunc
1183     truncf
1184 "
1185
1186 HAVE_LIST="
1187     $ARCH_EXT_LIST
1188     $(add_suffix _external $ARCH_EXT_LIST)
1189     $(add_suffix _inline   $ARCH_EXT_LIST)
1190     $HAVE_LIST_CMDLINE
1191     $HAVE_LIST_PUB
1192     $THREADS_LIST
1193     $MATH_FUNCS
1194     aligned_malloc
1195     aligned_stack
1196     alsa_asoundlib_h
1197     altivec_h
1198     arpa_inet_h
1199     asm_mod_q
1200     asm_mod_y
1201     attribute_may_alias
1202     attribute_packed
1203     closesocket
1204     cmov
1205     CommandLineToArgvW
1206     cpunop
1207     CryptGenRandom
1208     dcbzl
1209     dev_bktr_ioctl_bt848_h
1210     dev_bktr_ioctl_meteor_h
1211     dev_ic_bt8xx_h
1212     dev_video_bktr_ioctl_bt848_h
1213     dev_video_meteor_ioctl_meteor_h
1214     direct_h
1215     dlfcn_h
1216     dlopen
1217     dos_paths
1218     dxva_h
1219     ebp_available
1220     ebx_available
1221     fast_64bit
1222     fast_clz
1223     fast_cmov
1224     fcntl
1225     fork
1226     getaddrinfo
1227     gethrtime
1228     getopt
1229     GetProcessAffinityMask
1230     GetProcessMemoryInfo
1231     GetProcessTimes
1232     GetSystemTimeAsFileTime
1233     getrusage
1234     getservbyport
1235     gettimeofday
1236     gnu_as
1237     ibm_asm
1238     inet_aton
1239     io_h
1240     isatty
1241     jack_port_get_latency_range
1242     ldbrx
1243     libdc1394_1
1244     libdc1394_2
1245     local_aligned_16
1246     local_aligned_8
1247     localtime_r
1248     loongson
1249     machine_ioctl_bt848_h
1250     machine_ioctl_meteor_h
1251     malloc_h
1252     MapViewOfFile
1253     memalign
1254     mkstemp
1255     mm_empty
1256     mmap
1257     mprotect
1258     msvcrt
1259     nanosleep
1260     poll_h
1261     posix_memalign
1262     rdtsc
1263     sched_getaffinity
1264     sdl
1265     sdl_video_size
1266     SetConsoleTextAttribute
1267     setmode
1268     setrlimit
1269     Sleep
1270     sndio_h
1271     socklen_t
1272     soundcard_h
1273     strerror_r
1274     strptime
1275     strtok_r
1276     struct_addrinfo
1277     struct_group_source_req
1278     struct_ip_mreq_source
1279     struct_ipv6_mreq
1280     struct_pollfd
1281     struct_rusage_ru_maxrss
1282     struct_sockaddr_in6
1283     struct_sockaddr_sa_len
1284     struct_sockaddr_storage
1285     struct_v4l2_frmivalenum_discrete
1286     symver_asm_label
1287     symver_gnu_asm
1288     sysconf
1289     sysctl
1290     sys_mman_h
1291     sys_param_h
1292     sys_resource_h
1293     sys_select_h
1294     sys_soundcard_h
1295     sys_time_h
1296     sys_videoio_h
1297     threads
1298     unistd_h
1299     usleep
1300     vfp_args
1301     VirtualAlloc
1302     windows_h
1303     winsock2_h
1304     xform_asm
1305     xmm_clobbers
1306 "
1307
1308 # options emitted with CONFIG_ prefix but not available on command line
1309 CONFIG_EXTRA="
1310     aandcttables
1311     ac3dsp
1312     error_resilience
1313     gcrypt
1314     golomb
1315     gplv3
1316     h264chroma
1317     h264dsp
1318     h264pred
1319     h264qpel
1320     huffman
1321     lgplv3
1322     lpc
1323     mpegaudio
1324     mpegaudiodsp
1325     mpegvideo
1326     mpegvideoenc
1327     nettle
1328     rangecoder
1329     rtpdec
1330     sinewin
1331     vp3dsp
1332 "
1333
1334 CMDLINE_SELECT="
1335     $ARCH_EXT_LIST
1336     $CONFIG_LIST
1337     $HAVE_LIST_CMDLINE
1338     $THREADS_LIST
1339     asm
1340     cross_compile
1341     debug
1342     extra_warnings
1343     logging
1344     lto
1345     optimizations
1346 "
1347
1348 PATHS_LIST='
1349     bindir
1350     datadir
1351     incdir
1352     libdir
1353     mandir
1354     prefix
1355     shlibdir
1356 '
1357
1358 CMDLINE_SET="
1359     $PATHS_LIST
1360     ar
1361     arch
1362     as
1363     build_suffix
1364     cc
1365     cpu
1366     cross_prefix
1367     dep_cc
1368     extra_version
1369     host_cc
1370     host_cflags
1371     host_ld
1372     host_ldflags
1373     host_libs
1374     host_os
1375     ld
1376     logfile
1377     malloc_prefix
1378     nm
1379     optflags
1380     pkg_config
1381     random_seed
1382     samples
1383     sysinclude
1384     sysroot
1385     target_exec
1386     target_os
1387     target_path
1388     toolchain
1389 "
1390
1391 CMDLINE_APPEND="
1392     extra_cflags
1393 "
1394
1395 # code dependency declarations
1396
1397 # architecture extensions
1398
1399 armv5te_deps="arm"
1400 armv6_deps="arm"
1401 armv6t2_deps="arm"
1402 neon_deps="arm"
1403 vfp_deps="arm"
1404 vfpv3_deps="vfp"
1405
1406 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1407
1408 altivec_deps="ppc"
1409 ppc4xx_deps="ppc"
1410
1411 vis_deps="sparc"
1412
1413 x86_64_suggest="cmov fast_cmov"
1414
1415 amd3dnow_deps="mmx"
1416 amd3dnowext_deps="amd3dnow"
1417 mmx_deps="x86"
1418 mmxext_deps="mmx"
1419 sse_deps="mmxext"
1420 sse2_deps="sse"
1421 sse3_deps="sse2"
1422 ssse3_deps="sse3"
1423 sse4_deps="ssse3"
1424 sse42_deps="sse4"
1425 avx_deps="sse42"
1426 fma4_deps="avx"
1427
1428 mmx_external_deps="yasm"
1429 mmx_inline_deps="inline_asm"
1430 mmx_suggest="mmx_external mmx_inline"
1431
1432 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1433     eval dep=\$${ext}_deps
1434     eval ${ext}_external_deps='"${dep}_external"'
1435     eval ${ext}_inline_deps='"${dep}_inline"'
1436     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1437 done
1438
1439 aligned_stack_if_any="ppc x86"
1440 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1441 fast_clz_if_any="alpha avr32 mips ppc x86"
1442 fast_unaligned_if_any="ppc x86"
1443
1444 inline_asm_deps="!tms470"
1445 need_memalign="altivec neon sse"
1446
1447 symver_if_any="symver_asm_label symver_gnu_asm"
1448
1449 log2_deps="!msvcrt"
1450
1451 # subsystems
1452 dct_select="rdft"
1453 mdct_select="fft"
1454 rdft_select="fft"
1455 mpegaudio_select="mpegaudiodsp"
1456 mpegaudiodsp_select="dct"
1457 mpegvideoenc_select="mpegvideo"
1458
1459 # decoders / encoders / hardware accelerators
1460 aac_decoder_select="mdct sinewin"
1461 aac_encoder_select="mdct sinewin"
1462 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1463 ac3_decoder_select="mdct ac3dsp ac3_parser"
1464 ac3_encoder_select="mdct ac3dsp"
1465 ac3_fixed_encoder_select="mdct ac3dsp"
1466 alac_encoder_select="lpc"
1467 amrnb_decoder_select="lsp"
1468 amrwb_decoder_select="lsp"
1469 atrac1_decoder_select="mdct sinewin"
1470 atrac3_decoder_select="mdct"
1471 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1472 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1473 cavs_decoder_select="golomb mpegvideo"
1474 comfortnoise_encoder_select="lpc"
1475 cook_decoder_select="mdct sinewin"
1476 cscd_decoder_select="lzo"
1477 cscd_decoder_suggest="zlib"
1478 dca_decoder_select="mdct"
1479 dnxhd_encoder_select="aandcttables mpegvideoenc"
1480 dxa_decoder_select="zlib"
1481 eac3_decoder_select="ac3_decoder"
1482 eac3_encoder_select="ac3_encoder"
1483 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1484 eatgq_decoder_select="aandcttables"
1485 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1486 ffv1_decoder_select="golomb rangecoder"
1487 ffv1_encoder_select="rangecoder"
1488 ffvhuff_encoder_select="huffman"
1489 flac_decoder_select="golomb"
1490 flac_encoder_select="golomb lpc"
1491 flashsv_decoder_select="zlib"
1492 flashsv_encoder_select="zlib"
1493 flashsv2_decoder_select="zlib"
1494 flv_decoder_select="h263_decoder"
1495 flv_encoder_select="h263_encoder"
1496 fraps_decoder_select="huffman"
1497 h261_decoder_select="error_resilience mpegvideo"
1498 h261_encoder_select="aandcttables mpegvideoenc"
1499 h263_decoder_select="error_resilience h263_parser mpegvideo"
1500 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1501 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1502 h263i_decoder_select="h263_decoder"
1503 h263p_encoder_select="h263_encoder"
1504 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1505 h264_dxva2_hwaccel_deps="dxva2api_h"
1506 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1507 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1508 h264_vda_hwaccel_select="vda h264_decoder"
1509 h264_vdpau_decoder_select="vdpau h264_decoder"
1510 huffyuv_encoder_select="huffman"
1511 iac_decoder_select="fft mdct sinewin"
1512 imc_decoder_select="fft mdct sinewin"
1513 jpegls_decoder_select="golomb"
1514 jpegls_encoder_select="golomb"
1515 ljpeg_encoder_select="aandcttables mpegvideoenc"
1516 loco_decoder_select="golomb"
1517 mdec_decoder_select="error_resilience mpegvideo"
1518 mjpeg_encoder_select="aandcttables mpegvideoenc"
1519 mlp_decoder_select="mlp_parser"
1520 mp1_decoder_select="mpegaudio"
1521 mp1float_decoder_select="mpegaudio"
1522 mp2_decoder_select="mpegaudio"
1523 mp2float_decoder_select="mpegaudio"
1524 mp3_decoder_select="mpegaudio"
1525 mp3adu_decoder_select="mpegaudio"
1526 mp3adufloat_decoder_select="mpegaudio"
1527 mp3float_decoder_select="mpegaudio"
1528 mp3on4_decoder_select="mpegaudio"
1529 mp3on4float_decoder_select="mpegaudio"
1530 mpc7_decoder_select="mpegaudiodsp"
1531 mpc8_decoder_select="mpegaudiodsp"
1532 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1533 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1534 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1535 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1536 mpeg1video_decoder_select="error_resilience mpegvideo"
1537 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1538 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1539 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1540 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1541 mpeg2video_decoder_select="error_resilience mpegvideo"
1542 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1543 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1544 mpeg4_encoder_select="h263_encoder"
1545 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1546 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1547 msmpeg4v1_decoder_select="h263_decoder"
1548 msmpeg4v1_encoder_select="h263_encoder"
1549 msmpeg4v2_decoder_select="h263_decoder"
1550 msmpeg4v2_encoder_select="h263_encoder"
1551 msmpeg4v3_decoder_select="h263_decoder"
1552 msmpeg4v3_encoder_select="h263_encoder"
1553 mss2_decoder_select="vc1_decoder"
1554 nellymoser_decoder_select="mdct sinewin"
1555 nellymoser_encoder_select="mdct sinewin"
1556 nuv_decoder_select="lzo"
1557 png_decoder_select="zlib"
1558 png_encoder_select="zlib"
1559 qcelp_decoder_select="lsp"
1560 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1561 ra_144_encoder_select="lpc"
1562 ralf_decoder_select="golomb"
1563 rv10_decoder_select="h263_decoder"
1564 rv10_encoder_select="h263_encoder"
1565 rv20_decoder_select="h263_decoder"
1566 rv20_encoder_select="h263_encoder"
1567 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1568 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1569 shorten_decoder_select="golomb"
1570 sipr_decoder_select="lsp"
1571 snow_decoder_select="dwt rangecoder"
1572 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1573 svq1_decoder_select="error_resilience mpegvideo"
1574 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1575 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1576 svq3_decoder_suggest="zlib"
1577 theora_decoder_select="vp3_decoder"
1578 tiff_decoder_suggest="zlib"
1579 tiff_encoder_suggest="zlib"
1580 truehd_decoder_select="mlp_decoder"
1581 tscc_decoder_select="zlib"
1582 twinvq_decoder_select="mdct lsp sinewin"
1583 utvideo_encoder_select="huffman"
1584 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1585 vc1_dxva2_hwaccel_deps="dxva2api_h"
1586 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1587 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1588 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1589 vc1image_decoder_select="vc1_decoder"
1590 vorbis_decoder_select="mdct"
1591 vorbis_encoder_select="mdct"
1592 vp3_decoder_select="vp3dsp"
1593 vp5_decoder_select="vp3dsp"
1594 vp6_decoder_select="huffman vp3dsp"
1595 vp6a_decoder_select="vp6_decoder"
1596 vp6f_decoder_select="vp6_decoder"
1597 vp8_decoder_select="h264pred h264qpel"
1598 wmapro_decoder_select="mdct sinewin"
1599 wmav1_decoder_select="mdct sinewin"
1600 wmav1_encoder_select="mdct sinewin"
1601 wmav2_decoder_select="mdct sinewin"
1602 wmav2_encoder_select="mdct sinewin"
1603 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1604 wmv1_decoder_select="h263_decoder"
1605 wmv1_encoder_select="h263_encoder"
1606 wmv2_decoder_select="h263_decoder"
1607 wmv2_encoder_select="h263_encoder"
1608 wmv3_decoder_select="vc1_decoder"
1609 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1610 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1611 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1612 wmv3image_decoder_select="wmv3_decoder"
1613 zerocodec_decoder_select="zlib"
1614 zlib_decoder_select="zlib"
1615 zlib_encoder_select="zlib"
1616 zmbv_decoder_select="zlib"
1617 zmbv_encoder_select="zlib"
1618
1619 vaapi_deps="va_va_h"
1620 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1621 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1622
1623 # parsers
1624 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1625 mpeg4video_parser_select="error_resilience mpegvideo"
1626 mpegvideo_parser_select="error_resilience mpegvideo"
1627 vc1_parser_select="error_resilience mpegvideo"
1628
1629 # external libraries
1630 libfaac_encoder_deps="libfaac"
1631 libfdk_aac_encoder_deps="libfdk_aac"
1632 libgsm_decoder_deps="libgsm"
1633 libgsm_encoder_deps="libgsm"
1634 libgsm_ms_decoder_deps="libgsm"
1635 libgsm_ms_encoder_deps="libgsm"
1636 libilbc_decoder_deps="libilbc"
1637 libilbc_encoder_deps="libilbc"
1638 libmp3lame_encoder_deps="libmp3lame"
1639 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1640 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1641 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1642 libopenjpeg_decoder_deps="libopenjpeg"
1643 libopenjpeg_encoder_deps="libopenjpeg"
1644 libopus_decoder_deps="libopus"
1645 libopus_encoder_deps="libopus"
1646 libschroedinger_decoder_deps="libschroedinger"
1647 libschroedinger_encoder_deps="libschroedinger"
1648 libspeex_decoder_deps="libspeex"
1649 libspeex_encoder_deps="libspeex"
1650 libtheora_encoder_deps="libtheora"
1651 libvo_aacenc_encoder_deps="libvo_aacenc"
1652 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1653 libvorbis_encoder_deps="libvorbis"
1654 libvpx_decoder_deps="libvpx"
1655 libvpx_encoder_deps="libvpx"
1656 libx264_encoder_deps="libx264"
1657 libxavs_encoder_deps="libxavs"
1658 libxvid_encoder_deps="libxvid"
1659
1660 # demuxers / muxers
1661 ac3_demuxer_select="ac3_parser"
1662 asf_stream_muxer_select="asf_muxer"
1663 avisynth_demuxer_deps="avisynth"
1664 dirac_demuxer_select="dirac_parser"
1665 eac3_demuxer_select="ac3_parser"
1666 flac_demuxer_select="flac_parser"
1667 ipod_muxer_select="mov_muxer"
1668 ismv_muxer_select="mov_muxer"
1669 matroska_audio_muxer_select="matroska_muxer"
1670 matroska_demuxer_suggest="bzlib lzo zlib"
1671 mov_demuxer_suggest="zlib"
1672 mp3_demuxer_select="mpegaudio_parser"
1673 mp4_muxer_select="mov_muxer"
1674 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1675 mpegtsraw_demuxer_select="mpegts_demuxer"
1676 mxf_d10_muxer_select="mxf_muxer"
1677 ogg_demuxer_select="golomb"
1678 psp_muxer_select="mov_muxer"
1679 rtp_demuxer_select="sdp_demuxer"
1680 rtp_muxer_select="mpegvideo"
1681 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1682 rtsp_demuxer_select="http_protocol rtpdec"
1683 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1684 sap_demuxer_select="sdp_demuxer"
1685 sap_muxer_select="rtp_muxer rtp_protocol"
1686 sdp_demuxer_select="rtpdec"
1687 smoothstreaming_muxer_select="ismv_muxer"
1688 spdif_muxer_select="aac_parser"
1689 tak_demuxer_select="tak_parser"
1690 tg2_muxer_select="mov_muxer"
1691 tgp_muxer_select="mov_muxer"
1692 w64_demuxer_deps="wav_demuxer"
1693
1694 # indevs / outdevs
1695 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1696 alsa_outdev_deps="alsa_asoundlib_h"
1697 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1698 dv1394_indev_deps="dv1394 dv_demuxer"
1699 fbdev_indev_deps="linux_fb_h"
1700 jack_indev_deps="jack_jack_h"
1701 libcdio_indev_deps="libcdio"
1702 libdc1394_indev_deps="libdc1394"
1703 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1704 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1705 pulse_indev_deps="libpulse"
1706 sndio_indev_deps="sndio_h"
1707 sndio_outdev_deps="sndio_h"
1708 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1709 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1710 vfwcap_indev_extralibs="-lavicap32"
1711 x11grab_indev_deps="x11grab XShmCreateImage"
1712
1713 # protocols
1714 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1715 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1716 ffrtmpcrypt_protocol_select="tcp_protocol"
1717 ffrtmphttp_protocol_deps="!librtmp_protocol"
1718 ffrtmphttp_protocol_select="http_protocol"
1719 gopher_protocol_select="network"
1720 httpproxy_protocol_select="tcp_protocol"
1721 http_protocol_select="tcp_protocol"
1722 https_protocol_select="tls_protocol"
1723 librtmp_protocol_deps="librtmp"
1724 librtmpe_protocol_deps="librtmp"
1725 librtmps_protocol_deps="librtmp"
1726 librtmpt_protocol_deps="librtmp"
1727 librtmpte_protocol_deps="librtmp"
1728 mmsh_protocol_select="http_protocol"
1729 mmst_protocol_select="network"
1730 rtmp_protocol_deps="!librtmp_protocol"
1731 rtmp_protocol_select="tcp_protocol"
1732 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1733 rtmps_protocol_deps="!librtmp_protocol"
1734 rtmps_protocol_select="tls_protocol"
1735 rtmpt_protocol_select="ffrtmphttp_protocol"
1736 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1737 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1738 rtp_protocol_select="udp_protocol"
1739 sctp_protocol_deps="struct_sctp_event_subscribe"
1740 sctp_protocol_select="network"
1741 tcp_protocol_select="network"
1742 tls_protocol_deps_any="openssl gnutls"
1743 tls_protocol_select="tcp_protocol"
1744 udp_protocol_select="network"
1745
1746 # filters
1747 blackframe_filter_deps="gpl"
1748 boxblur_filter_deps="gpl"
1749 cropdetect_filter_deps="gpl"
1750 delogo_filter_deps="gpl"
1751 drawtext_filter_deps="libfreetype"
1752 frei0r_filter_deps="frei0r dlopen strtok_r"
1753 frei0r_filter_extralibs='$ldl'
1754 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1755 frei0r_src_filter_extralibs='$ldl'
1756 hqdn3d_filter_deps="gpl"
1757 resample_filter_deps="avresample"
1758 ocv_filter_deps="libopencv"
1759 scale_filter_deps="swscale"
1760 yadif_filter_deps="gpl"
1761
1762 # libraries
1763 avcodec_deps="avutil"
1764 avdevice_deps="avutil avcodec avformat"
1765 avfilter_deps="avutil"
1766 avformat_deps="avutil avcodec"
1767 avresample_deps="avutil"
1768 swscale_deps="avutil"
1769
1770 # programs
1771 avconv_deps="avcodec avfilter avformat avresample swscale"
1772 avconv_select="aformat_filter asyncts_filter
1773                format_filter fps_filter scale_filter setpts_filter"
1774 avplay_deps="avcodec avformat avresample swscale sdl"
1775 avplay_select="rdft"
1776 avprobe_deps="avcodec avformat"
1777 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1778 avserver_extralibs='$ldl'
1779
1780 doc_deps="texi2html"
1781
1782 # default parameters
1783
1784 logfile="config.log"
1785
1786 # installation paths
1787 prefix_default="/usr/local"
1788 bindir_default='${prefix}/bin'
1789 datadir_default='${prefix}/share/avconv'
1790 incdir_default='${prefix}/include'
1791 libdir_default='${prefix}/lib'
1792 mandir_default='${prefix}/share/man'
1793 shlibdir_default="$libdir_default"
1794
1795 # toolchain
1796 ar_default="ar"
1797 cc_default="gcc"
1798 host_cc_default="gcc"
1799 cp_f="cp -f"
1800 ln_s="ln -sf"
1801 nm_default="nm -g"
1802 objformat="elf"
1803 pkg_config_default=pkg-config
1804 ranlib="ranlib"
1805 yasmexe="yasm"
1806
1807 nogas=":"
1808
1809 # machine
1810 arch_default=$(uname -m)
1811 cpu="generic"
1812
1813 # OS
1814 target_os_default=$(tolower $(uname -s))
1815 host_os=$target_os_default
1816
1817 # configurable options
1818 enable $LIBRARY_LIST $PROGRAM_LIST
1819
1820 enable asm
1821 enable debug
1822 enable doc
1823 enable optimizations
1824 enable safe_bitstream_reader
1825 enable static
1826 enable swscale_alpha
1827
1828 # build settings
1829 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1830 AVSERVERLDFLAGS=-Wl,-E
1831 LIBPREF="lib"
1832 LIBSUF=".a"
1833 FULLNAME='$(NAME)$(BUILDSUF)'
1834 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1835 SLIBPREF="lib"
1836 SLIBSUF=".so"
1837 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1838 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1839 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1840 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1841 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1842 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1843
1844 asflags_filter=echo
1845 cflags_filter=echo
1846 ldflags_filter=echo
1847
1848 AS_C='-c'
1849 AS_O='-o $@'
1850 CC_C='-c'
1851 CC_E='-E -o $@'
1852 CC_O='-o $@'
1853 LD_O='-o $@'
1854 LD_LIB='-l%'
1855 LD_PATH='-L'
1856 HOSTCC_C='-c'
1857 HOSTCC_O='-o $@'
1858 HOSTLD_O='-o $@'
1859
1860 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
1861 host_libs='-lm'
1862 host_cflags_filter=echo
1863 host_ldflags_filter=echo
1864
1865 target_path='$(CURDIR)'
1866
1867 # since the object filename is not given with the -MM flag, the compiler
1868 # is only able to print the basename, and we must add the path ourselves
1869 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1870 DEPFLAGS='-MM'
1871
1872 # find source path
1873 if test -f configure; then
1874     source_path=.
1875 else
1876     source_path=$(cd $(dirname "$0"); pwd)
1877     echo "$source_path" | grep -q '[[:blank:]]' &&
1878         die "Out of tree builds are impossible with whitespace in source path."
1879     test -e "$source_path/config.h" &&
1880         die "Out of tree builds are impossible with config.h in source dir."
1881 fi
1882
1883 for v in "$@"; do
1884     r=${v#*=}
1885     l=${v%"$r"}
1886     r=$(sh_quote "$r")
1887     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1888 done
1889
1890 find_things(){
1891     thing=$1
1892     pattern=$2
1893     file=$source_path/$3
1894     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1895 }
1896
1897 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1898 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1899 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1900 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1901 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1902 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1903 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1904 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1905 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1906 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1907 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1908
1909 ALL_COMPONENTS="
1910     $BSF_LIST
1911     $DECODER_LIST
1912     $DEMUXER_LIST
1913     $ENCODER_LIST
1914     $FILTER_LIST
1915     $HWACCEL_LIST
1916     $INDEV_LIST
1917     $MUXER_LIST
1918     $OUTDEV_LIST
1919     $PARSER_LIST
1920     $PROTOCOL_LIST
1921 "
1922
1923 for n in $COMPONENT_LIST; do
1924     v=$(toupper ${n%s})_LIST
1925     eval enable \$$v
1926     eval ${n}_if_any="\$$v"
1927 done
1928
1929 disable snow_decoder snow_encoder
1930
1931 enable $ARCH_EXT_LIST
1932
1933 die_unknown(){
1934     echo "Unknown option \"$1\"."
1935     echo "See $0 --help for available options."
1936     exit 1
1937 }
1938
1939 show_list() {
1940     suffix=_$1
1941     shift
1942     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1943     exit 0
1944 }
1945
1946 rand_list(){
1947     IFS=', '
1948     set -- $*
1949     unset IFS
1950     for thing; do
1951         comp=${thing%:*}
1952         prob=${thing#$comp}
1953         prob=${prob#:}
1954         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
1955         echo "prob ${prob:-0.5}"
1956         printf '%s\n' $comp
1957     done
1958 }
1959
1960 do_random(){
1961     action=$1
1962     shift
1963     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
1964     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
1965 }
1966
1967 for opt do
1968     optval="${opt#*=}"
1969     case "$opt" in
1970         --extra-ldflags=*)
1971             add_ldflags $optval
1972         ;;
1973         --extra-libs=*)
1974             add_extralibs $optval
1975         ;;
1976         --disable-devices)
1977             disable $INDEV_LIST $OUTDEV_LIST
1978         ;;
1979         --enable-debug=*)
1980             debuglevel="$optval"
1981         ;;
1982         --disable-programs)
1983             disable $PROGRAM_LIST
1984         ;;
1985         --disable-everything)
1986             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1987         ;;
1988         --enable-random|--disable-random)
1989             action=${opt%%-random}
1990             do_random ${action#--} $COMPONENT_LIST
1991         ;;
1992         --enable-random=*|--disable-random=*)
1993             action=${opt%%-random=*}
1994             do_random ${action#--} $optval
1995         ;;
1996         --enable-*=*|--disable-*=*)
1997             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1998             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1999             eval list=\$$(toupper $thing)_LIST
2000             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2001             $action $(filter "$name" $list)
2002         ;;
2003         --enable-?*|--disable-?*)
2004             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2005             if is_in $option $COMPONENT_LIST; then
2006                 test $action = disable && action=unset
2007                 eval $action \$$(toupper ${option%s})_LIST
2008             elif is_in $option $CMDLINE_SELECT; then
2009                 $action $option
2010             else
2011                 die_unknown $opt
2012             fi
2013         ;;
2014         --list-*)
2015             NAME="${opt#--list-}"
2016             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2017             NAME=${NAME%s}
2018             eval show_list $NAME \$$(toupper $NAME)_LIST
2019         ;;
2020         --help|-h) show_help
2021         ;;
2022         *)
2023             optname="${opt%%=*}"
2024             optname="${optname#--}"
2025             optname=$(echo "$optname" | sed 's/-/_/g')
2026             if is_in $optname $CMDLINE_SET; then
2027                 eval $optname='$optval'
2028             elif is_in $optname $CMDLINE_APPEND; then
2029                 append $optname "$optval"
2030             else
2031                 die_unknown $opt
2032             fi
2033         ;;
2034     esac
2035 done
2036
2037 disabled logging && logfile=/dev/null
2038
2039 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2040 set >> $logfile
2041
2042 test -n "$cross_prefix" && enable cross_compile
2043
2044 if enabled cross_compile; then
2045     test -n "$arch" && test -n "$target_os" ||
2046         die "Must specify target arch and OS when cross-compiling"
2047 fi
2048
2049 ar_default="${cross_prefix}${ar_default}"
2050 cc_default="${cross_prefix}${cc_default}"
2051 nm_default="${cross_prefix}${nm_default}"
2052 pkg_config_default="${cross_prefix}${pkg_config_default}"
2053 ranlib="${cross_prefix}${ranlib}"
2054
2055 sysinclude_default="${sysroot}/usr/include"
2056
2057 case "$toolchain" in
2058     clang-asan)
2059         cc_default="clang"
2060         add_cflags  -faddress-sanitizer
2061         add_ldflags -faddress-sanitizer
2062     ;;
2063     clang-tsan)
2064         cc_default="clang"
2065         add_cflags  -fthread-sanitizer
2066         add_ldflags -fthread-sanitizer
2067     ;;
2068     msvc)
2069         cc_default="c99wrap cl"
2070         ld_default="c99wrap link"
2071         nm_default="dumpbin -symbols"
2072         ar_default="lib"
2073         target_os_default="win32"
2074     ;;
2075     ?*)
2076         die "Unknown toolchain $toolchain"
2077     ;;
2078 esac
2079
2080 set_default arch cc pkg_config sysinclude target_os
2081 enabled cross_compile || host_cc_default=$cc
2082 set_default host_cc
2083
2084 if ! $pkg_config --version >/dev/null 2>&1; then
2085     warn "$pkg_config not found, library detection may fail."
2086     pkg_config=false
2087 fi
2088
2089 exesuf() {
2090     case $1 in
2091         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2092     esac
2093 }
2094
2095 EXESUF=$(exesuf $target_os)
2096 HOSTEXESUF=$(exesuf $host_os)
2097
2098 # set temporary file name
2099 : ${TMPDIR:=$TEMPDIR}
2100 : ${TMPDIR:=$TMP}
2101 : ${TMPDIR:=/tmp}
2102
2103 if ! check_cmd mktemp -u XXXXXX; then
2104     # simple replacement for missing mktemp
2105     # NOT SAFE FOR GENERAL USE
2106     mktemp(){
2107         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2108     }
2109 fi
2110
2111 tmpfile(){
2112     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2113         (set -C; exec > $tmp) 2>/dev/null ||
2114         die "Unable to create temporary file in $TMPDIR."
2115     append TMPFILES $tmp
2116     eval $1=$tmp
2117 }
2118
2119 trap 'rm -f -- $TMPFILES' EXIT
2120
2121 tmpfile TMPASM .asm
2122 tmpfile TMPC   .c
2123 tmpfile TMPE   $EXESUF
2124 tmpfile TMPH   .h
2125 tmpfile TMPO   .o
2126 tmpfile TMPS   .S
2127 tmpfile TMPSH  .sh
2128 tmpfile TMPV   .ver
2129
2130 unset -f mktemp
2131
2132 chmod +x $TMPE
2133
2134 # make sure we can execute files in $TMPDIR
2135 cat > $TMPSH 2>> $logfile <<EOF
2136 #! /bin/sh
2137 EOF
2138 chmod +x $TMPSH >> $logfile 2>&1
2139 if ! $TMPSH >> $logfile 2>&1; then
2140     cat <<EOF
2141 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2142 variable to another directory and make sure that it is not mounted noexec.
2143 EOF
2144     die "Sanity test failed."
2145 fi
2146
2147 ccc_flags(){
2148     for flag; do
2149         case $flag in
2150             -std=c99)           echo -c99                       ;;
2151             -mcpu=*)            echo -arch ${flag#*=}           ;;
2152             -mieee)             echo -ieee                      ;;
2153             -O*|-fast)          echo $flag                      ;;
2154             -fno-math-errno)    echo -assume nomath_errno       ;;
2155             -g)                 echo -g3                        ;;
2156             -Wall)              echo -msg_enable level2         ;;
2157             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2158             -Wl,*)              echo $flag                      ;;
2159             -f*|-W*)                                            ;;
2160             *)                  echo $flag                      ;;
2161         esac
2162    done
2163 }
2164
2165 msvc_flags(){
2166     for flag; do
2167         case $flag in
2168             -fomit-frame-pointer) echo -Oy ;;
2169             -g)                   echo -Z7 ;;
2170             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2171                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2172                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2173                                        -wd4996 -wd4273 ;;
2174             -std=c99)             ;;
2175             -fno-math-errno)      ;;
2176             -fno-common)          ;;
2177             -fno-signed-zeros)    ;;
2178             -lz)                  echo zlib.lib ;;
2179             -lavifil32)           echo vfw32.lib ;;
2180             -lavicap32)           echo vfw32.lib user32.lib ;;
2181             -l*)                  echo ${flag#-l}.lib ;;
2182             *)                    echo $flag ;;
2183         esac
2184     done
2185 }
2186
2187 pgi_flags(){
2188     for flag; do
2189         case $flag in
2190             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2191             -fomit-frame-pointer) echo -Mnoframe ;;
2192             -g)                   echo -gopt ;;
2193             *)                    echo $flag ;;
2194         esac
2195     done
2196 }
2197
2198 suncc_flags(){
2199     for flag; do
2200         case $flag in
2201             -march=*|-mcpu=*)
2202                 case "${flag#*=}" in
2203                     native)                   echo -xtarget=native       ;;
2204                     v9|niagara)               echo -xarch=sparc          ;;
2205                     ultrasparc)               echo -xarch=sparcvis       ;;
2206                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2207                     i586|pentium)             echo -xchip=pentium        ;;
2208                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2209                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2210                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2211                     pentium4*)          echo -xtarget=pentium4           ;;
2212                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2213                     *-sse3)             echo -xarch=sse3                 ;;
2214                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2215                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2216                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2217                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2218                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2219                     k8|opteron|athlon64|athlon-fx)
2220                                               echo -xarch=sse2a          ;;
2221                     athlon*)                  echo -xarch=pentium_proa   ;;
2222                 esac
2223                 ;;
2224             -std=c99)             echo -xc99              ;;
2225             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2226             -fPIC)                echo -KPIC -xcode=pic32 ;;
2227             -W*,*)                echo $flag              ;;
2228             -f*-*|-W*)                                    ;;
2229             *)                    echo $flag              ;;
2230         esac
2231     done
2232 }
2233
2234 tms470_flags(){
2235     for flag; do
2236         case $flag in
2237             -march=*|-mcpu=*)
2238                 case "${flag#*=}" in
2239                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2240                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2241                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2242                     armv6*|arm11*)          echo -mv=6   ;;
2243                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2244                                             echo -mv=5e  ;;
2245                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2246                 esac
2247                 ;;
2248             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2249             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2250             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2251             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2252             -msoft-float)   echo --float_support=vfplib       ;;
2253             -O[0-3]|-mf=*)  echo $flag                        ;;
2254             -g)             echo -g -mn                       ;;
2255             -pds=*)         echo $flag                        ;;
2256             -D*|-I*)        echo $flag                        ;;
2257             --gcc|--abi=*)  echo $flag                        ;;
2258             -me)            echo $flag                        ;;
2259         esac
2260     done
2261 }
2262
2263 probe_cc(){
2264     pfx=$1
2265     _cc=$2
2266
2267     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2268     unset _ld_o _ldflags _ld_lib _ld_path
2269     unset _depflags _DEPCMD _DEPFLAGS
2270     _flags_filter=echo
2271
2272     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2273         _type=llvm_gcc
2274         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2275         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2276         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2277         _cflags_speed='-O3'
2278         _cflags_size='-Os'
2279     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2280         _type=gcc
2281         gcc_version=$($_cc --version | head -n1)
2282         gcc_basever=$($_cc -dumpversion)
2283         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2284         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2285         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2286         if ! $_cc -dumpversion | grep -q '^2\.'; then
2287             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2288         fi
2289         _cflags_speed='-O3'
2290         _cflags_size='-Os'
2291     elif $_cc --version 2>/dev/null | grep -q Intel; then
2292         _type=icc
2293         _ident=$($_cc --version | head -n1)
2294         _depflags='-MMD'
2295         _cflags_speed='-O3'
2296         _cflags_size='-Os'
2297         _cflags_noopt='-O1'
2298     elif $_cc -v 2>&1 | grep -q xlc; then
2299         _type=xlc
2300         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2301         _cflags_speed='-O5'
2302         _cflags_size='-O5 -qcompact'
2303     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2304         _type=ccc
2305         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2306         _DEPFLAGS='-M'
2307         _cflags_speed='-fast'
2308         _cflags_size='-O1'
2309         _flags_filter=ccc_flags
2310     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2311         test -d "$sysroot" || die "No valid sysroot specified."
2312         _type=armcc
2313         _ident=$($_cc --vsn | head -n1)
2314         armcc_conf="$PWD/armcc.conf"
2315         $_cc --arm_linux_configure                 \
2316              --arm_linux_config_file="$armcc_conf" \
2317              --configure_sysroot="$sysroot"        \
2318              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2319              die "Error creating armcc configuration file."
2320         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2321         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2322         as_default="${cross_prefix}gcc"
2323         _depflags='-MMD'
2324         _cflags_speed='-O3'
2325         _cflags_size='-Os'
2326     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2327         _type=tms470
2328         _ident=$($_cc -version | head -n1 | tr -s ' ')
2329         _flags='--gcc --abi=eabi -me'
2330         _cc_e='-ppl -fe=$@'
2331         _cc_o='-fe=$@'
2332         _depflags='-ppa -ppd=$(@:.o=.d)'
2333         _cflags_speed='-O3 -mf=5'
2334         _cflags_size='-O3 -mf=2'
2335         _flags_filter=tms470_flags
2336     elif $_cc -v 2>&1 | grep -q clang; then
2337         _type=clang
2338         _ident=$($_cc --version | head -n1)
2339         _depflags='-MMD'
2340         _cflags_speed='-O3'
2341         _cflags_size='-Os'
2342     elif $_cc -V 2>&1 | grep -q Sun; then
2343         _type=suncc
2344         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2345         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2346         _DEPFLAGS='-xM1 -xc99'
2347         _ldflags='-std=c99'
2348         _cflags_speed='-O5'
2349         _cflags_size='-O5 -xspace'
2350         _flags_filter=suncc_flags
2351     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2352         _type=pathscale
2353         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2355         _cflags_speed='-O2'
2356         _cflags_size='-Os'
2357         _flags_filter='filter_out -Wdisabled-optimization'
2358     elif $_cc -v 2>&1 | grep -q Open64; then
2359         _type=open64
2360         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2362         _cflags_speed='-O2'
2363         _cflags_size='-Os'
2364         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2365     elif $_cc -V 2>&1 | grep -q Portland; then
2366         _type=pgi
2367         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2368         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2369         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2370         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2371         _cflags_noopt="-O1"
2372         _flags_filter=pgi_flags
2373     elif $_cc 2>&1 | grep -q Microsoft; then
2374         _type=msvc
2375         _ident=$($cc 2>&1 | head -n1)
2376         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2377         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2378         _cflags_speed="-O2"
2379         _cflags_size="-O1"
2380         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2381         if $_cc 2>&1 | grep -q Linker; then
2382             _ld_o='-out $@'
2383         else
2384             _ld_o='-Fe$@'
2385         fi
2386         _cc_o='-Fo $@'
2387         _cc_e='-P -Fi $@'
2388         _flags_filter=msvc_flags
2389         _ld_lib='lib%.a'
2390         _ld_path='-libpath:'
2391         _flags='-nologo'
2392         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2393         if [ $pfx = hostcc ]; then
2394             append _cflags -Dsnprintf=_snprintf
2395         fi
2396     fi
2397
2398     eval ${pfx}_type=\$_type
2399     eval ${pfx}_ident=\$_ident
2400 }
2401
2402 set_ccvars(){
2403     eval ${1}_C=\${_cc_c-\${${1}_C}}
2404     eval ${1}_E=\${_cc_e-\${${1}_E}}
2405     eval ${1}_O=\${_cc_o-\${${1}_O}}
2406
2407     if [ -n "$_depflags" ]; then
2408         eval ${1}_DEPFLAGS=\$_depflags
2409     else
2410         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2411         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2412         eval DEP${1}FLAGS=\$_flags
2413     fi
2414 }
2415
2416 probe_cc cc "$cc"
2417 cflags_filter=$_flags_filter
2418 cflags_speed=$_cflags_speed
2419 cflags_size=$_cflags_size
2420 cflags_noopt=$_cflags_noopt
2421 add_cflags $_flags $_cflags
2422 cc_ldflags=$_ldflags
2423 set_ccvars CC
2424
2425 probe_cc hostcc "$host_cc"
2426 host_cflags_filter=$_flags_filter
2427 add_host_cflags  $_flags $_cflags
2428 set_ccvars HOSTCC
2429
2430 test -n "$cc_type" && enable $cc_type ||
2431     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2432
2433 : ${as_default:=$cc}
2434 : ${dep_cc_default:=$cc}
2435 : ${ld_default:=$cc}
2436 : ${host_ld_default:=$host_cc}
2437 set_default ar as dep_cc ld host_ld
2438
2439 probe_cc as "$as"
2440 asflags_filter=$_flags_filter
2441 add_asflags $_flags $_cflags
2442 set_ccvars AS
2443
2444 probe_cc ld "$ld"
2445 ldflags_filter=$_flags_filter
2446 add_ldflags $_flags $_ldflags
2447 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2448 LD_O=${_ld_o-$LD_O}
2449 LD_LIB=${_ld_lib-$LD_LIB}
2450 LD_PATH=${_ld_path-$LD_PATH}
2451
2452 probe_cc hostld "$host_ld"
2453 host_ldflags_filter=$_flags_filter
2454 add_host_ldflags $_flags $_ldflags
2455 HOSTLD_O=${_ld_o-$HOSTLD_O}
2456
2457 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2458     probe_cc depcc "$dep_cc"
2459     CCDEP=${_DEPCMD:-$DEPCMD}
2460     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2461     DEPCCFLAGS=$_flags
2462 fi
2463
2464 if $ar 2>&1 | grep -q Microsoft; then
2465     arflags="-nologo"
2466     ar_o='-out:$@'
2467 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2468     arflags="rq"
2469     ar_o='$@'
2470 else
2471     arflags="rc"
2472     ar_o='$@'
2473 fi
2474
2475 add_cflags $extra_cflags
2476 add_asflags $extra_cflags
2477
2478 if test -n "$sysroot"; then
2479     case "$cc_type" in
2480         gcc|llvm_gcc|clang)
2481             add_cppflags --sysroot="$sysroot"
2482             add_ldflags --sysroot="$sysroot"
2483         ;;
2484         tms470)
2485             add_cppflags -I"$sysinclude"
2486             add_ldflags  --sysroot="$sysroot"
2487         ;;
2488     esac
2489 fi
2490
2491 if test "$cpu" = host; then
2492     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2493
2494     case "$cc_type" in
2495         gcc|llvm_gcc)
2496             check_native(){
2497                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2498                 sed -n "/cc1.*$1=/{
2499                             s/.*$1=\\([^ ]*\\).*/\\1/
2500                             p
2501                             q
2502                         }" $TMPE
2503             }
2504             cpu=$(check_native -march || check_native -mcpu)
2505         ;;
2506     esac
2507
2508     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2509 fi
2510
2511 # Deal with common $arch aliases
2512 case "$arch" in
2513     aarch64|arm64)
2514         arch="aarch64"
2515     ;;
2516     arm*)
2517         arch="arm"
2518     ;;
2519     mips*|IP*)
2520         arch="mips"
2521     ;;
2522     parisc*|hppa*)
2523         arch="parisc"
2524     ;;
2525     "Power Macintosh"|ppc*|powerpc*)
2526         arch="ppc"
2527     ;;
2528     s390|s390x)
2529         arch="s390"
2530     ;;
2531     sh4|sh)
2532         arch="sh4"
2533     ;;
2534     sun4u|sparc*)
2535         arch="sparc"
2536     ;;
2537     tilegx|tile-gx)
2538         arch="tilegx"
2539     ;;
2540     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2541         arch="x86"
2542     ;;
2543 esac
2544
2545 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2546 enable $arch
2547
2548 # Add processor-specific flags
2549 if enabled aarch64; then
2550
2551     case $cpu in
2552         armv*)
2553             cpuflags="-march=$cpu"
2554         ;;
2555         *)
2556             cpuflags="-mcpu=$cpu"
2557         ;;
2558     esac
2559
2560 elif enabled alpha; then
2561
2562     cpuflags="-mcpu=$cpu"
2563
2564 elif enabled arm; then
2565
2566     check_arm_arch() {
2567         check_cpp_condition stddef.h \
2568             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2569             $cpuflags
2570     }
2571
2572     probe_arm_arch() {
2573         if   check_arm_arch 4;        then echo armv4;
2574         elif check_arm_arch 4T;       then echo armv4t;
2575         elif check_arm_arch 5;        then echo armv5;
2576         elif check_arm_arch 5E;       then echo armv5e;
2577         elif check_arm_arch 5T;       then echo armv5t;
2578         elif check_arm_arch 5TE;      then echo armv5te;
2579         elif check_arm_arch 5TEJ;     then echo armv5te;
2580         elif check_arm_arch 6;        then echo armv6;
2581         elif check_arm_arch 6J;       then echo armv6j;
2582         elif check_arm_arch 6K;       then echo armv6k;
2583         elif check_arm_arch 6Z;       then echo armv6z;
2584         elif check_arm_arch 6ZK;      then echo armv6zk;
2585         elif check_arm_arch 6T2;      then echo armv6t2;
2586         elif check_arm_arch 7;        then echo armv7;
2587         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2588         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2589         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2590         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2591         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2592         fi
2593     }
2594
2595     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2596
2597     case $cpu in
2598         armv*)
2599             cpuflags="-march=$cpu"
2600             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2601         ;;
2602         *)
2603             cpuflags="-mcpu=$cpu"
2604             case $cpu in
2605                 cortex-a*)                               subarch=armv7a  ;;
2606                 cortex-r*)                               subarch=armv7r  ;;
2607                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2608                 arm11*)                                  subarch=armv6   ;;
2609                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2610                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2611                 *)                             subarch=$(probe_arm_arch) ;;
2612             esac
2613         ;;
2614     esac
2615
2616     case "$subarch" in
2617         armv5t*)    enable fast_clz                ;;
2618         armv[6-8]*) enable fast_clz fast_unaligned ;;
2619     esac
2620
2621 elif enabled avr32; then
2622
2623     case $cpu in
2624         ap7[02]0[0-2])
2625             subarch="avr32_ap"
2626             cpuflags="-mpart=$cpu"
2627         ;;
2628         ap)
2629             subarch="avr32_ap"
2630             cpuflags="-march=$cpu"
2631         ;;
2632         uc3[ab]*)
2633             subarch="avr32_uc"
2634             cpuflags="-mcpu=$cpu"
2635         ;;
2636         uc)
2637             subarch="avr32_uc"
2638             cpuflags="-march=$cpu"
2639         ;;
2640     esac
2641
2642 elif enabled bfin; then
2643
2644     cpuflags="-mcpu=$cpu"
2645
2646 elif enabled mips; then
2647
2648     cpuflags="-march=$cpu"
2649
2650 elif enabled ppc; then
2651
2652     case $(tolower $cpu) in
2653         601|ppc601|powerpc601)
2654             cpuflags="-mcpu=601"
2655             disable altivec
2656         ;;
2657         603*|ppc603*|powerpc603*)
2658             cpuflags="-mcpu=603"
2659             disable altivec
2660         ;;
2661         604*|ppc604*|powerpc604*)
2662             cpuflags="-mcpu=604"
2663             disable altivec
2664         ;;
2665         g3|75*|ppc75*|powerpc75*)
2666             cpuflags="-mcpu=750"
2667             disable altivec
2668         ;;
2669         g4|745*|ppc745*|powerpc745*)
2670             cpuflags="-mcpu=7450"
2671         ;;
2672         74*|ppc74*|powerpc74*)
2673             cpuflags="-mcpu=7400"
2674         ;;
2675         g5|970|ppc970|powerpc970)
2676             cpuflags="-mcpu=970"
2677         ;;
2678         power[3-7]*)
2679             cpuflags="-mcpu=$cpu"
2680         ;;
2681         cell)
2682             cpuflags="-mcpu=cell"
2683             enable ldbrx
2684         ;;
2685         e500mc)
2686             cpuflags="-mcpu=e500mc"
2687             disable altivec
2688         ;;
2689         e500v2)
2690             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2691             disable altivec
2692         ;;
2693         e500)
2694             cpuflags="-mcpu=8540 -mhard-float"
2695             disable altivec
2696         ;;
2697     esac
2698
2699 elif enabled sparc; then
2700
2701     case $cpu in
2702         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2703             cpuflags="-mcpu=$cpu"
2704             disable vis
2705         ;;
2706         ultrasparc*|niagara[234])
2707             cpuflags="-mcpu=$cpu"
2708         ;;
2709     esac
2710
2711 elif enabled x86; then
2712
2713     case $cpu in
2714         i[345]86|pentium)
2715             cpuflags="-march=$cpu"
2716             disable mmx
2717         ;;
2718         # targets that do NOT support conditional mov (cmov)
2719         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2720             cpuflags="-march=$cpu"
2721             disable cmov
2722         ;;
2723         # targets that do support conditional mov (cmov)
2724         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2725             cpuflags="-march=$cpu"
2726             enable cmov
2727             enable fast_cmov
2728         ;;
2729         # targets that do support conditional mov but on which it's slow
2730         pentium4|pentium4m|prescott|nocona)
2731             cpuflags="-march=$cpu"
2732             enable cmov
2733             disable fast_cmov
2734         ;;
2735     esac
2736
2737 fi
2738
2739 if [ "$cpu" != generic ]; then
2740     add_cflags  $cpuflags
2741     add_asflags $cpuflags
2742 fi
2743
2744 # compiler sanity check
2745 check_exec <<EOF
2746 int main(void){ return 0; }
2747 EOF
2748 if test "$?" != 0; then
2749     echo "$cc is unable to create an executable file."
2750     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2751         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2752         echo "Only do this if you know what cross compiling means."
2753     fi
2754     die "C compiler test failed."
2755 fi
2756
2757 add_cppflags -D_ISOC99_SOURCE
2758 check_cflags -std=c99
2759 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2760 #include <stdlib.h>
2761 EOF
2762 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2763 #include <stdlib.h>
2764 EOF
2765
2766 check_host_cflags -std=c99
2767 check_host_cflags -Wall
2768
2769 check_64bit(){
2770     arch32=$1
2771     arch64=$2
2772     expr=$3
2773     check_code cc "" "int test[2*($expr) - 1]" &&
2774         subarch=$arch64 || subarch=$arch32
2775 }
2776
2777 case "$arch" in
2778     alpha|ia64)
2779         spic=$shared
2780     ;;
2781     mips)
2782         check_64bit mips mips64 '_MIPS_SIM > 1'
2783         spic=$shared
2784     ;;
2785     parisc)
2786         check_64bit parisc parisc64 'sizeof(void *) > 4'
2787         spic=$shared
2788     ;;
2789     ppc)
2790         check_64bit ppc ppc64 'sizeof(void *) > 4'
2791         spic=$shared
2792     ;;
2793     sparc)
2794         check_64bit sparc sparc64 'sizeof(void *) > 4'
2795         spic=$shared
2796     ;;
2797     x86)
2798         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2799         if test "$subarch" = "x86_64"; then
2800             spic=$shared
2801         fi
2802     ;;
2803 esac
2804
2805 enable $subarch
2806 enabled spic && enable pic
2807
2808 # OS specific
2809 case $target_os in
2810     haiku)
2811         prefix_default="/boot/common"
2812         network_extralibs="-lnetwork"
2813         host_libs=
2814         ;;
2815     sunos)
2816         AVSERVERLDFLAGS=""
2817         SHFLAGS='-shared -Wl,-h,$$(@F)'
2818         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2819         network_extralibs="-lsocket -lnsl"
2820         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2821         # When using suncc to build, the Solaris linker will mark
2822         # an executable with each instruction set encountered by
2823         # the Solaris assembler.  As our libraries contain their own
2824         # guards for processor-specific code, instead suppress
2825         # generation of the HWCAPS ELF section on Solaris x86 only.
2826         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2827         nm_default='nm -P -g'
2828         ;;
2829     netbsd)
2830         disable symver
2831         oss_indev_extralibs="-lossaudio"
2832         oss_outdev_extralibs="-lossaudio"
2833         ;;
2834     openbsd|bitrig)
2835         # On OpenBSD 4.5. the compiler does not use PIC unless
2836         # explicitly using -fPIC. Libav builds fine without PIC,
2837         # however the generated executable will not do anything
2838         # (simply quits with exit-code 1, no crash, no output).
2839         # Thus explicitly enable PIC here.
2840         enable pic
2841         disable symver
2842         SHFLAGS='-shared'
2843         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
2844         SLIB_INSTALL_LINKS=
2845         oss_indev_extralibs="-lossaudio"
2846         oss_outdev_extralibs="-lossaudio"
2847         ;;
2848     dragonfly)
2849         disable symver
2850         ;;
2851     freebsd)
2852         ;;
2853     bsd/os)
2854         add_extralibs -lpoll -lgnugetopt
2855         ;;
2856     darwin)
2857         gas="gas-preprocessor.pl $cc"
2858         enabled ppc && add_asflags -force_cpusubtype_ALL
2859         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2860         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2861         add_ldflags -Wl,-dynamic,-search_paths_first
2862         SLIBSUF=".dylib"
2863         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2864         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2865         AVSERVERLDFLAGS=-Wl,-bind_at_load
2866         objformat="macho"
2867         enabled x86_64 && objformat="macho64"
2868         enabled_any pic shared ||
2869             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2870         ;;
2871     mingw32*)
2872         if test $target_os = "mingw32ce"; then
2873             disable network
2874         else
2875             target_os=mingw32
2876         fi
2877         LIBTARGET=i386
2878         if enabled x86_64; then
2879             LIBTARGET="i386:x86-64"
2880         elif enabled arm; then
2881             LIBTARGET=arm-wince
2882         fi
2883         shlibdir_default="$bindir_default"
2884         SLIBPREF=""
2885         SLIBSUF=".dll"
2886         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2887         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2888         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2889         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2890         SLIB_INSTALL_LINKS=
2891         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2892         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2893         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2894         objformat="win32"
2895         dlltool="${cross_prefix}dlltool"
2896         ranlib=:
2897         enable dos_paths
2898         add_cppflags -U__STRICT_ANSI__
2899         ;;
2900     win32|win64)
2901         if enabled shared; then
2902             # Link to the import library instead of the normal static library
2903             # for shared libs.
2904             LD_LIB='%.lib'
2905             # Cannot build shared and static libraries at the same time with
2906             # MSVC.
2907             disable static
2908         fi
2909         shlibdir_default="$bindir_default"
2910         SLIBPREF=""
2911         SLIBSUF=".dll"
2912         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2913         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2914         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
2915         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2916         SLIB_INSTALL_LINKS=
2917         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2918         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2919         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
2920         objformat="win32"
2921         ranlib=:
2922         enable dos_paths
2923         ;;
2924     cygwin*)
2925         target_os=cygwin
2926         shlibdir_default="$bindir_default"
2927         SLIBPREF="cyg"
2928         SLIBSUF=".dll"
2929         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2930         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2931         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2932         SLIB_INSTALL_LINKS=
2933         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
2934         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
2935         objformat="win32"
2936         enable dos_paths
2937         ;;
2938     *-dos|freedos|opendos)
2939         network_extralibs="-lsocket"
2940         objformat="coff"
2941         enable dos_paths
2942         add_cppflags -U__STRICT_ANSI__
2943         ;;
2944     linux)
2945         enable dv1394
2946         ;;
2947     irix*)
2948         target_os=irix
2949         ranlib="echo ignoring ranlib"
2950         ;;
2951     os/2*)
2952         ln_s="cp -f"
2953         objformat="aout"
2954         add_cppflags -D_GNU_SOURCE
2955         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2956         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2957         AVSERVERLDFLAGS=""
2958         LIBSUF="_s.a"
2959         SLIBPREF=""
2960         SLIBSUF=".dll"
2961         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2962         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2963         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2964             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2965             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2966             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2967             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2968             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2969         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2970             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2971         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2972         enable dos_paths
2973         ;;
2974     gnu/kfreebsd)
2975         add_cppflags -D_BSD_SOURCE
2976         ;;
2977     gnu)
2978         ;;
2979     qnx)
2980         add_cppflags -D_QNX_SOURCE
2981         network_extralibs="-lsocket"
2982         ;;
2983     symbian)
2984         SLIBSUF=".dll"
2985         enable dos_paths
2986         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2987         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2988         add_ldflags -Wl,--target1-abs,--no-undefined \
2989                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2990                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2991         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2992                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2993                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2994         ;;
2995     osf1)
2996         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
2997         AVSERVERLDFLAGS=
2998         ;;
2999     minix)
3000         ;;
3001     plan9)
3002         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3003                      -D_REENTRANT_SOURCE        \
3004                      -D_RESEARCH_SOURCE         \
3005                      -DFD_SETSIZE=96            \
3006                      -DHAVE_SOCK_OPTS
3007         add_compat strtod.o strtod=avpriv_strtod
3008         network_extralibs='-lbsd'
3009         exeobjs=compat/plan9/main.o
3010         disable avserver
3011         ln_s='ln -s -f'
3012         cp_f='cp'
3013         ;;
3014     none)
3015         ;;
3016     *)
3017         die "Unknown OS '$target_os'."
3018         ;;
3019 esac
3020
3021 # determine libc flavour
3022
3023 if check_cpp_condition features.h "defined __UCLIBC__"; then
3024     libc_type=uclibc
3025     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3026 elif check_cpp_condition features.h "defined __GLIBC__"; then
3027     libc_type=glibc
3028     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3029 elif check_header _mingw.h; then
3030     libc_type=mingw
3031     check_cpp_condition _mingw.h \
3032         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3033             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3034         die "ERROR: MinGW runtime version must be >= 3.15."
3035 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3036     libc_type=newlib
3037     add_cppflags -U__STRICT_ANSI__
3038 elif check_func_headers stdlib.h _get_doserrno; then
3039     libc_type=msvcrt
3040     add_compat strtod.o strtod=avpriv_strtod
3041     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3042                                  _snprintf=avpriv_snprintf  \
3043                                  vsnprintf=avpriv_vsnprintf
3044 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3045     libc_type=klibc
3046 fi
3047
3048 test -n "$libc_type" && enable $libc_type
3049
3050 # hacks for compiler/libc/os combinations
3051
3052 if enabled_all tms470 glibc; then
3053     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3054     add_cppflags -D__USER_LABEL_PREFIX__=
3055     add_cppflags -D__builtin_memset=memset
3056     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3057     add_cflags   -pds=48    # incompatible redefinition of macro
3058 fi
3059
3060 if enabled_all ccc glibc; then
3061     add_ldflags -Wl,-z,now  # calls to libots crash without this
3062 fi
3063
3064 esc(){
3065     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3066 }
3067
3068 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3069
3070 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3071
3072 set_default $PATHS_LIST
3073 set_default nm
3074
3075 # we need to build at least one lib type
3076 if ! enabled_any static shared; then
3077     cat <<EOF
3078 At least one library type must be built.
3079 Specify --enable-static to build the static libraries or --enable-shared to
3080 build the shared libraries as well. To only build the shared libraries specify
3081 --disable-static in addition to --enable-shared.
3082 EOF
3083     exit 1;
3084 fi
3085
3086 die_license_disabled() {
3087     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3088 }
3089
3090 die_license_disabled gpl libcdio
3091 die_license_disabled gpl libx264
3092 die_license_disabled gpl libxavs
3093 die_license_disabled gpl libxvid
3094 die_license_disabled gpl x11grab
3095
3096 die_license_disabled nonfree libfaac
3097 die_license_disabled nonfree libfdk_aac
3098 die_license_disabled nonfree openssl
3099
3100 die_license_disabled version3 libopencore_amrnb
3101 die_license_disabled version3 libopencore_amrwb
3102 die_license_disabled version3 libvo_aacenc
3103 die_license_disabled version3 libvo_amrwbenc
3104
3105 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3106
3107 disabled optimizations || check_cflags -fomit-frame-pointer
3108
3109 enable_pic() {
3110     enable pic
3111     add_cppflags -DPIC
3112     add_cflags   -fPIC
3113     add_asflags  -fPIC
3114 }
3115
3116 enabled pic && enable_pic
3117
3118 check_cc <<EOF || die "Symbol mangling check failed."
3119 int ff_extern;
3120 EOF
3121 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3122 extern_prefix=${sym%%ff_extern*}
3123
3124 check_cc <<EOF && enable_weak inline_asm
3125 void foo(void) { __asm__ volatile ("" ::); }
3126 EOF
3127
3128 _restrict=
3129 for restrict_keyword in restrict __restrict__ __restrict; do
3130     check_cc <<EOF && _restrict=$restrict_keyword && break
3131 void foo(char * $restrict_keyword p);
3132 EOF
3133 done
3134
3135 check_cc <<EOF && enable attribute_packed
3136 struct { int x; } __attribute__((packed)) x;
3137 EOF
3138
3139 check_cc <<EOF && enable attribute_may_alias
3140 union { int x; } __attribute__((may_alias)) x;
3141 EOF
3142
3143 check_cc <<EOF || die "endian test failed"
3144 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3145 EOF
3146 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3147
3148 if enabled alpha; then
3149
3150     check_cflags -mieee
3151
3152 elif enabled arm; then
3153
3154     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3155     enabled thumb && check_cflags -mthumb || check_cflags -marm
3156     nogas=die
3157
3158     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3159         enable vfp_args
3160     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3161         case "${cross_prefix:-$cc}" in
3162             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3163             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3164 __asm__ (".eabi_attribute 28, 1");
3165 int main(void) { return 0; }
3166 EOF
3167         esac
3168         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3169     fi
3170
3171     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3172     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3173     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3174     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3175     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3176     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3177
3178     [ $target_os = linux ] ||
3179         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3180             $ARCH_EXT_LIST_ARM
3181
3182     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3183     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3184
3185     enabled_all armv6t2 shared !pic && enable_pic
3186
3187 elif enabled mips; then
3188
3189     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3190
3191 elif enabled parisc; then
3192
3193     if enabled gcc; then
3194         case $($cc -dumpversion) in
3195             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3196         esac
3197     fi
3198
3199 elif enabled ppc; then
3200
3201     enable local_aligned_8 local_aligned_16
3202
3203     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3204     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3205     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3206     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3207
3208     # AltiVec flags: The FSF version of GCC differs from the Apple version
3209     if enabled altivec; then
3210         nogas=warn
3211         check_cflags -maltivec -mabi=altivec &&
3212         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3213         check_cflags -faltivec
3214
3215         # check if our compiler supports Motorola AltiVec C API
3216         check_cc <<EOF || disable altivec
3217 $inc_altivec_h
3218 int main(void) {
3219     vector signed int v1 = (vector signed int) { 0 };
3220     vector signed int v2 = (vector signed int) { 1 };
3221     v1 = vec_add(v1, v2);
3222     return 0;
3223 }
3224 EOF
3225
3226         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3227     fi
3228
3229 elif enabled sparc; then
3230
3231     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3232
3233 elif enabled x86; then
3234
3235     check_code ld intrin.h "__rdtsc()" && enable rdtsc
3236
3237     check_code ld mmintrin.h "_mm_empty()" && enable mm_empty
3238
3239     enable local_aligned_8 local_aligned_16
3240
3241     # check whether EBP is available on x86
3242     # As 'i' is stored on the stack, this program will crash
3243     # if the base pointer is used to access it because the
3244     # base pointer is cleared in the inline assembly code.
3245     check_exec_crash <<EOF && enable ebp_available
3246 volatile int i=0;
3247 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3248 return i;
3249 EOF
3250
3251     # check whether EBX is available on x86
3252     check_inline_asm ebx_available '""::"b"(0)' &&
3253         check_inline_asm ebx_available '"":::"%ebx"'
3254
3255     # check whether xmm clobbers are supported
3256     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3257
3258     # check whether binutils is new enough to compile SSSE3/MMXEXT
3259     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3260     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3261
3262     if ! disabled_any asm mmx yasm; then
3263         if check_cmd $yasmexe --version; then
3264             enabled x86_64 && yasm_extra="-m amd64"
3265             yasm_debug="-g dwarf2"
3266         elif check_cmd nasm -v; then
3267             yasmexe=nasm
3268             yasm_debug="-g -F dwarf"
3269             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3270         fi
3271
3272         YASMFLAGS="-f $objformat $yasm_extra"
3273         enabled pic               && append YASMFLAGS "-DPIC"
3274         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3275         case "$objformat" in
3276             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3277         esac
3278
3279         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3280             die "yasm not found, use --disable-yasm for a crippled build"
3281         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3282         check_yasm "CPU amdnop" && enable cpunop
3283     fi
3284
3285     case "$cpu" in
3286         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3287             disable fast_clz
3288         ;;
3289     esac
3290
3291 fi
3292
3293 if enabled asm; then
3294     as=${gas:=$as}
3295     check_as <<EOF && enable gnu_as || \
3296         $nogas "GNU assembler not found, install gas-preprocessor"
3297 .macro m n
3298 \n: .int 0
3299 .endm
3300 m x
3301 EOF
3302 fi
3303
3304 check_ldflags -Wl,--as-needed
3305
3306 if check_func dlopen; then
3307     ldl=
3308 elif check_func dlopen -ldl; then
3309     ldl=-ldl
3310 fi
3311
3312 if ! disabled network; then
3313     check_type "sys/types.h sys/socket.h" socklen_t
3314     check_type netdb.h "struct addrinfo"
3315     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3316     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3317     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3318     check_type netinet/in.h "struct sockaddr_in6"
3319     check_type poll.h "struct pollfd"
3320     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3321     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3322     check_type netinet/sctp.h "struct sctp_event_subscribe"
3323     check_func getaddrinfo $network_extralibs
3324     check_func getservbyport $network_extralibs
3325     # Prefer arpa/inet.h over winsock2
3326     if check_header arpa/inet.h ; then
3327         check_func closesocket
3328     elif check_header winsock2.h ; then
3329         check_func_headers winsock2.h closesocket -lws2 &&
3330             network_extralibs="-lws2" ||
3331         { check_func_headers winsock2.h closesocket -lws2_32 &&
3332             network_extralibs="-lws2_32"; }
3333         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3334         check_type ws2tcpip.h socklen_t
3335         check_type ws2tcpip.h "struct addrinfo"
3336         check_type ws2tcpip.h "struct group_source_req"
3337         check_type ws2tcpip.h "struct ip_mreq_source"
3338         check_type ws2tcpip.h "struct ipv6_mreq"
3339         check_type winsock2.h "struct pollfd"
3340         check_type ws2tcpip.h "struct sockaddr_in6"
3341         check_type ws2tcpip.h "struct sockaddr_storage"
3342         check_struct winsock2.h "struct sockaddr" sa_len
3343     else
3344         disable network
3345     fi
3346 fi
3347
3348 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3349 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3350
3351 check_func  fcntl
3352 check_func  fork
3353 check_func  gethrtime
3354 check_func  getopt
3355 check_func  getrusage
3356 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3357 check_func  gettimeofday
3358 check_func  inet_aton $network_extralibs
3359 check_func  isatty
3360 check_func  localtime_r
3361 check_func  ${malloc_prefix}memalign            && enable memalign
3362 check_func  mkstemp
3363 check_func  mmap
3364 check_func  mprotect
3365 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3366 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3367 check_func  setrlimit
3368 check_func  strerror_r
3369 check_func  strptime
3370 check_func  strtok_r
3371 check_func  sched_getaffinity
3372 check_func  sysconf
3373 check_func  sysctl
3374 check_func  usleep
3375 check_func_headers io.h setmode
3376 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3377 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3378 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3379 check_func_headers windows.h GetProcessAffinityMask
3380 check_func_headers windows.h GetProcessTimes
3381 check_func_headers windows.h GetSystemTimeAsFileTime
3382 check_func_headers windows.h MapViewOfFile
3383 check_func_headers windows.h SetConsoleTextAttribute
3384 check_func_headers windows.h Sleep
3385 check_func_headers windows.h VirtualAlloc
3386
3387 check_header direct.h
3388 check_header dlfcn.h
3389 check_header dxva.h
3390 check_header dxva2api.h
3391 check_header io.h
3392 check_header malloc.h
3393 check_header poll.h
3394 check_header sys/mman.h
3395 check_header sys/param.h
3396 check_header sys/resource.h
3397 check_header sys/select.h
3398 check_header sys/time.h
3399 check_header unistd.h
3400 check_header vdpau/vdpau.h
3401 check_header vdpau/vdpau_x11.h
3402 check_header windows.h
3403 check_header X11/extensions/XvMClib.h
3404
3405 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3406 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3407
3408 if ! disabled w32threads && ! enabled pthreads; then
3409     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3410 fi
3411
3412 # check for some common methods of building with pthread support
3413 # do this before the optional library checks as some of them require pthreads
3414 if ! disabled pthreads && ! enabled w32threads; then
3415     enable pthreads
3416     if check_func pthread_create; then
3417         :
3418     elif check_func pthread_create -pthread; then
3419         add_cflags -pthread
3420         add_extralibs -pthread
3421     elif check_func pthread_create -pthreads; then
3422         add_cflags -pthreads
3423         add_extralibs -pthreads
3424     elif check_func pthread_create -lpthreadGC2; then
3425         add_extralibs -lpthreadGC2
3426     elif ! check_lib pthread.h pthread_create -lpthread; then
3427         disable pthreads
3428     fi
3429 fi
3430
3431 for thread in $THREADS_LIST; do
3432     if enabled $thread; then
3433         test -n "$thread_type" &&
3434             die "ERROR: Only one thread type must be selected." ||
3435             thread_type="$thread"
3436     fi
3437 done
3438
3439 check_lib math.h sin -lm && LIBM="-lm"
3440 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3441
3442 atan2f_args=2
3443 ldexpf_args=2
3444 powf_args=2
3445
3446 for func in $MATH_FUNCS; do
3447     eval check_mathfunc $func \${${func}_args:-1}
3448 done
3449
3450 # these are off by default, so fail if requested and not available
3451 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3452 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3453 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3454 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3455 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3456 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3457 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3458 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3459 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3460 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3461 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3462 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3463 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3464 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3465 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3466 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3467 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3468 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3469 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3470 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3471 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3472 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3473 enabled libvpx     && {
3474     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3475                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3476     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3477                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
3478 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3479                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3480                         die "ERROR: libx264 version must be >= 0.118."; }
3481 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3482 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3483 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3484                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3485                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3486                         die "ERROR: openssl not found"; }
3487
3488 if enabled gnutls; then
3489     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3490     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3491 fi
3492
3493 # libdc1394 check
3494 if enabled libdc1394; then
3495     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3496         enable libdc1394_2; } ||
3497     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3498         enable libdc1394_1; } ||
3499     die "ERROR: No version of libdc1394 found "
3500 fi
3501
3502 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3503     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3504     enable sdl &&
3505     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3506 fi
3507
3508 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3509
3510 check_header linux/fb.h
3511 check_header linux/videodev2.h
3512 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3513
3514 check_header sys/videoio.h
3515
3516 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3517 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3518 # w32api 3.12 had it defined wrong
3519 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3520
3521 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3522 { check_header dev/bktr/ioctl_meteor.h &&
3523   check_header dev/bktr/ioctl_bt848.h; } ||
3524 { check_header machine/ioctl_meteor.h &&
3525   check_header machine/ioctl_bt848.h; } ||
3526 { check_header dev/video/meteor/ioctl_meteor.h &&
3527   check_header dev/video/bktr/ioctl_bt848.h; } ||
3528 check_header dev/ic/bt8xx.h
3529
3530 check_header sndio.h
3531 check_header sys/soundcard.h
3532 check_header soundcard.h
3533
3534 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3535
3536 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3537     check_func jack_port_get_latency_range -ljack
3538
3539 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3540
3541 enabled libcdio &&
3542     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3543
3544 enabled x11grab                                           &&
3545 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3546 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3547 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3548
3549 # check for VDA header
3550 if ! disabled vda && check_header VideoDecodeAcceleration/VDADecoder.h; then
3551     enable vda && add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3552 fi
3553
3554 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3555     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3556         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3557 fi
3558
3559 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3560
3561 # add some useful compiler flags if supported
3562 check_cflags -Wdeclaration-after-statement
3563 check_cflags -Wall
3564 check_cflags -Wno-parentheses
3565 check_cflags -Wno-switch
3566 check_cflags -Wno-format-zero-length
3567 check_cflags -Wdisabled-optimization
3568 check_cflags -Wpointer-arith
3569 check_cflags -Wredundant-decls
3570 check_cflags -Wno-pointer-sign
3571 check_cflags -Wcast-qual
3572 check_cflags -Wwrite-strings
3573 check_cflags -Wtype-limits
3574 check_cflags -Wundef
3575 check_cflags -Wmissing-prototypes
3576 check_cflags -Wstrict-prototypes
3577 enabled extra_warnings && check_cflags -Winline
3578
3579 # add some linker flags
3580 check_ldflags -Wl,--warn-common
3581 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3582 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3583
3584 enabled xmm_clobber_test &&
3585     check_ldflags -Wl,--wrap,avcodec_open2              \
3586                   -Wl,--wrap,avcodec_decode_audio4      \
3587                   -Wl,--wrap,avcodec_decode_video2      \
3588                   -Wl,--wrap,avcodec_decode_subtitle2   \
3589                   -Wl,--wrap,avcodec_encode_audio2      \
3590                   -Wl,--wrap,avcodec_encode_video       \
3591                   -Wl,--wrap,avcodec_encode_subtitle    \
3592                   -Wl,--wrap,sws_scale ||
3593     disable xmm_clobber_test
3594
3595 echo "X{};" > $TMPV
3596 if test_ldflags -Wl,--version-script,$TMPV; then
3597     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3598     check_cc <<EOF && enable symver_asm_label
3599 void ff_foo(void) __asm__ ("av_foo@VERSION");
3600 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3601 EOF
3602     check_cc <<EOF && enable symver_gnu_asm
3603 __asm__(".symver ff_foo,av_foo@VERSION");
3604 void ff_foo(void) {}
3605 EOF
3606 fi
3607
3608 if [ -z "$optflags" ]; then
3609     if enabled small; then
3610         optflags=$cflags_size
3611     elif enabled optimizations; then
3612         optflags=$cflags_speed
3613     else
3614         optflags=$cflags_noopt
3615     fi
3616 fi
3617
3618 check_optflags(){
3619     check_cflags "$@"
3620     enabled lto && check_ldflags "$@"
3621 }
3622
3623
3624 if enabled lto; then
3625     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3626     check_cflags  -flto
3627     check_ldflags -flto $cpuflags
3628 fi
3629
3630 check_optflags $optflags
3631 check_optflags -fno-math-errno
3632 check_optflags -fno-signed-zeros
3633
3634 if enabled icc; then
3635     # Just warnings, no remarks
3636     check_cflags -w1
3637     # -wd: Disable following warnings
3638     # 144, 167, 556: -Wno-pointer-sign
3639     # 1292: attribute "foo" ignored
3640     # 1419: external declaration in primary source file
3641     # 10006: ignoring unknown option -fno-signed-zeros
3642     # 10148: ignoring unknown option -Wno-parentheses
3643     # 10156: ignoring option '-W'; no argument required
3644     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3645     # 11030: Warning unknown option --as-needed
3646     # 10156: ignoring option '-export'; no argument required
3647     check_ldflags -wd10156,11030
3648     # Allow to compile with optimizations
3649     check_ldflags -march=$cpu
3650     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3651     enable ebp_available
3652     if enabled x86_32; then
3653         icc_version=$($cc -dumpversion)
3654         test ${icc_version%%.*} -ge 11 &&
3655             check_cflags -falign-stack=maintain-16-byte ||
3656             disable aligned_stack
3657     fi
3658 elif enabled ccc; then
3659     # disable some annoying warnings
3660     add_cflags -msg_disable bitnotint
3661     add_cflags -msg_disable mixfuncvoid
3662     add_cflags -msg_disable nonstandcast
3663     add_cflags -msg_disable unsupieee
3664 elif enabled gcc; then
3665     check_optflags -fno-tree-vectorize
3666     check_cflags -Werror=implicit-function-declaration
3667     check_cflags -Werror=missing-prototypes
3668     check_cflags -Werror=declaration-after-statement
3669     check_cflags -Werror=vla
3670 elif enabled llvm_gcc; then
3671     check_cflags -mllvm -stack-alignment=16
3672 elif enabled clang; then
3673     check_cflags -mllvm -stack-alignment=16
3674     check_cflags -Qunused-arguments
3675     check_cflags -Werror=implicit-function-declaration
3676     check_cflags -Werror=missing-prototypes
3677 elif enabled armcc; then
3678     # 2523: use of inline assembler is deprecated
3679     add_cflags -W${armcc_opt},--diag_suppress=2523
3680     add_cflags -W${armcc_opt},--diag_suppress=1207
3681     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3682     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3683     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3684     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3685 elif enabled tms470; then
3686     add_cflags -pds=824 -pds=837
3687 elif enabled pathscale; then
3688     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3689 elif enabled msvc; then
3690     enabled x86_32 && disable aligned_stack
3691 fi
3692
3693 case $target_os in
3694     osf1)
3695         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3696     ;;
3697     plan9)
3698         add_cppflags -Dmain=plan9_main
3699     ;;
3700 esac
3701
3702 enabled_any $THREADS_LIST      && enable threads
3703
3704 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3705
3706 check_deps $CONFIG_LIST       \
3707            $CONFIG_EXTRA      \
3708            $HAVE_LIST         \
3709            $ALL_COMPONENTS    \
3710
3711 ! enabled_any memalign posix_memalign aligned_malloc &&
3712     enabled_any $need_memalign && enable memalign_hack
3713
3714 echo "install prefix            $prefix"
3715 echo "source path               $source_path"
3716 echo "C compiler                $cc"
3717 echo "ARCH                      $arch ($cpu)"
3718 if test "$build_suffix" != ""; then
3719     echo "build suffix              $build_suffix"
3720 fi
3721 if test "$extra_version" != ""; then
3722     echo "version string suffix     $extra_version"
3723 fi
3724 echo "big-endian                ${bigendian-no}"
3725 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3726 if enabled x86; then
3727     echo "${yasmexe}                      ${yasm-no}"
3728     echo "MMX enabled               ${mmx-no}"
3729     echo "MMXEXT enabled            ${mmxext-no}"
3730     echo "3DNow! enabled            ${amd3dnow-no}"
3731     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3732     echo "SSE enabled               ${sse-no}"
3733     echo "SSSE3 enabled             ${ssse3-no}"
3734     echo "AVX enabled               ${avx-no}"
3735     echo "FMA4 enabled              ${fma4-no}"
3736     echo "CMOV enabled              ${cmov-no}"
3737     echo "CMOV is fast              ${fast_cmov-no}"
3738     echo "EBX available             ${ebx_available-no}"
3739     echo "EBP available             ${ebp_available-no}"
3740 fi
3741 if enabled arm; then
3742     echo "ARMv5TE enabled           ${armv5te-no}"
3743     echo "ARMv6 enabled             ${armv6-no}"
3744     echo "ARMv6T2 enabled           ${armv6t2-no}"
3745     echo "VFP enabled               ${vfp-no}"
3746     echo "NEON enabled              ${neon-no}"
3747 fi
3748 if enabled ppc; then
3749     echo "AltiVec enabled           ${altivec-no}"
3750     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3751     echo "dcbzl available           ${dcbzl-no}"
3752 fi
3753 if enabled sparc; then
3754     echo "VIS enabled               ${vis-no}"
3755 fi
3756 echo "debug symbols             ${debug-no}"
3757 echo "optimize for size         ${small-no}"
3758 echo "optimizations             ${optimizations-no}"
3759 echo "static                    ${static-no}"
3760 echo "shared                    ${shared-no}"
3761 echo "new filter support        ${avfilter-no}"
3762 echo "network support           ${network-no}"
3763 echo "threading support         ${thread_type-no}"
3764 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3765 echo "SDL support               ${sdl-no}"
3766 echo "libdxva2 enabled          ${dxva2-no}"
3767 echo "libva enabled             ${vaapi-no}"
3768 echo "libvdpau enabled          ${vdpau-no}"
3769 echo "AVISynth enabled          ${avisynth-no}"
3770 echo "frei0r enabled            ${frei0r-no}"
3771 echo "gnutls enabled            ${gnutls-no}"
3772 echo "libcdio support           ${libcdio-no}"
3773 echo "libdc1394 support         ${libdc1394-no}"
3774 echo "libfaac enabled           ${libfaac-no}"
3775 echo "libfdk-aac enabled        ${libfdk_aac-no}"
3776 echo "libgsm enabled            ${libgsm-no}"
3777 echo "libilbc enabled           ${libilbc-no}"
3778 echo "libmp3lame enabled        ${libmp3lame-no}"
3779 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3780 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3781 echo "libopencv support         ${libopencv-no}"
3782 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3783 echo "libopus enabled           ${libopus-no}"
3784 echo "libpulse enabled          ${libpulse-no}"
3785 echo "librtmp enabled           ${librtmp-no}"
3786 echo "libschroedinger enabled   ${libschroedinger-no}"
3787 echo "libspeex enabled          ${libspeex-no}"
3788 echo "libtheora enabled         ${libtheora-no}"
3789 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3790 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3791 echo "libvorbis enabled         ${libvorbis-no}"
3792 echo "libvpx enabled            ${libvpx-no}"
3793 echo "libx264 enabled           ${libx264-no}"
3794 echo "libxavs enabled           ${libxavs-no}"
3795 echo "libxvid enabled           ${libxvid-no}"
3796 echo "openssl enabled           ${openssl-no}"
3797 echo "zlib enabled              ${zlib-no}"
3798 echo "bzlib enabled             ${bzlib-no}"
3799 test -n "$random_seed" &&
3800     echo "random seed               ${random_seed}"
3801 echo
3802
3803 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3804     echo "Enabled ${type}s:"
3805     eval list=\$$(toupper $type)_LIST
3806     print_enabled '_*' $list | sort | pr -r -3 -t
3807     echo
3808 done
3809
3810 license="LGPL version 2.1 or later"
3811 if enabled nonfree; then
3812     license="nonfree and unredistributable"
3813 elif enabled gplv3; then
3814     license="GPL version 3 or later"
3815 elif enabled lgplv3; then
3816     license="LGPL version 3 or later"
3817 elif enabled gpl; then
3818     license="GPL version 2 or later"
3819 fi
3820
3821 echo "License: $license"
3822
3823 echo "Creating config.mak and config.h..."
3824
3825 test -e Makefile || $ln_s "$source_path/Makefile" .
3826
3827 config_files="$TMPH config.mak"
3828
3829 cat > config.mak <<EOF
3830 # Automatically generated by configure - do not modify!
3831 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3832 prefix=$prefix
3833 LIBDIR=\$(DESTDIR)$libdir
3834 SHLIBDIR=\$(DESTDIR)$shlibdir
3835 INCDIR=\$(DESTDIR)$incdir
3836 BINDIR=\$(DESTDIR)$bindir
3837 DATADIR=\$(DESTDIR)$datadir
3838 MANDIR=\$(DESTDIR)$mandir
3839 SRC_PATH=$source_path
3840 CC_IDENT=$cc_ident
3841 ARCH=$arch
3842 CC=$cc
3843 AS=$as
3844 LD=$ld
3845 DEPCC=$dep_cc
3846 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3847 DEPAS=$as
3848 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3849 YASM=$yasmexe
3850 DEPYASM=$yasmexe
3851 AR=$ar
3852 ARFLAGS=$arflags
3853 AR_O=$ar_o
3854 RANLIB=$ranlib
3855 LN_S=$ln_s
3856 CPPFLAGS=$CPPFLAGS
3857 CFLAGS=$CFLAGS
3858 ASFLAGS=$ASFLAGS
3859 AS_C=$AS_C
3860 AS_O=$AS_O
3861 CC_C=$CC_C
3862 CC_E=$CC_E
3863 CC_O=$CC_O
3864 LD_O=$LD_O
3865 LD_LIB=$LD_LIB
3866 LD_PATH=$LD_PATH
3867 DLLTOOL=$dlltool
3868 LDFLAGS=$LDFLAGS
3869 LDFLAGS-avserver=$AVSERVERLDFLAGS
3870 SHFLAGS=$SHFLAGS
3871 YASMFLAGS=$YASMFLAGS
3872 BUILDSUF=$build_suffix
3873 FULLNAME=$FULLNAME
3874 LIBPREF=$LIBPREF
3875 LIBSUF=$LIBSUF
3876 LIBNAME=$LIBNAME
3877 SLIBPREF=$SLIBPREF
3878 SLIBSUF=$SLIBSUF
3879 EXESUF=$EXESUF
3880 EXTRA_VERSION=$extra_version
3881 CCDEP=$CCDEP
3882 CCDEP_FLAGS=$CCDEP_FLAGS
3883 ASDEP=$ASDEP
3884 ASDEP_FLAGS=$ASDEP_FLAGS
3885 CC_DEPFLAGS=$CC_DEPFLAGS
3886 AS_DEPFLAGS=$AS_DEPFLAGS
3887 HOSTCC=$host_cc
3888 HOSTLD=$host_ld
3889 HOSTCFLAGS=$host_cflags
3890 HOSTEXESUF=$HOSTEXESUF
3891 HOSTLDFLAGS=$host_ldflags
3892 HOSTLIBS=$host_libs
3893 DEPHOSTCC=$host_cc
3894 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
3895 HOSTCCDEP=$HOSTCCDEP
3896 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
3897 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
3898 HOSTCC_C=$HOSTCC_C
3899 HOSTCC_O=$HOSTCC_O
3900 HOSTLD_O=$HOSTLD_O
3901 TARGET_EXEC=$target_exec
3902 TARGET_PATH=$target_path
3903 LIBS-avplay=$sdl_libs
3904 CFLAGS-avplay=$sdl_cflags
3905 ZLIB=$($ldflags_filter -lz)
3906 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3907 EXTRALIBS=$extralibs
3908 COMPAT_OBJS=$compat_objs
3909 EXEOBJS=$exeobjs
3910 INSTALL=install
3911 LIBTARGET=${LIBTARGET}
3912 SLIBNAME=${SLIBNAME}
3913 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3914 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3915 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3916 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3917 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3918 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3919 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3920 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3921 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
3922 EOF
3923
3924 get_version(){
3925     lcname=lib${1}
3926     name=$(toupper $lcname)
3927     file=$source_path/$lcname/version.h
3928     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
3929     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3930     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3931     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3932 }
3933
3934 map 'get_version $v' $LIBRARY_LIST
3935
3936 cat > $TMPH <<EOF
3937 /* Automatically generated by configure - do not modify! */
3938 #ifndef LIBAV_CONFIG_H
3939 #define LIBAV_CONFIG_H
3940 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3941 #define LIBAV_LICENSE "$(c_escape $license)"
3942 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3943 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
3944 #define restrict $_restrict
3945 #define EXTERN_PREFIX "${extern_prefix}"
3946 #define EXTERN_ASM ${extern_prefix}
3947 #define SLIBSUF "$SLIBSUF"
3948 EOF
3949
3950 test -n "$malloc_prefix" &&
3951     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3952
3953 if enabled yasm; then
3954     append config_files $TMPASM
3955     printf '' >$TMPASM
3956 fi
3957
3958 print_config ARCH_   "$config_files" $ARCH_LIST
3959 print_config HAVE_   "$config_files" $HAVE_LIST
3960 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3961                                      $CONFIG_EXTRA      \
3962                                      $ALL_COMPONENTS    \
3963
3964 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3965
3966 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3967 cp_if_changed $TMPH config.h
3968 touch .config
3969
3970 enabled yasm && cp_if_changed $TMPASM config.asm
3971
3972 cat > $TMPH <<EOF
3973 /* Generated by ffconf */
3974 #ifndef AVUTIL_AVCONFIG_H
3975 #define AVUTIL_AVCONFIG_H
3976 EOF
3977
3978 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3979
3980 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3981
3982 cp_if_changed $TMPH libavutil/avconfig.h
3983
3984 test -n "$WARNINGS" && printf "\n$WARNINGS"
3985
3986 # build pkg-config files
3987
3988 pkgconfig_generate(){
3989     name=$1
3990     shortname=${name#lib}${build_suffix}
3991     comment=$2
3992     version=$3
3993     libs=$4
3994     requires=$5
3995     enabled ${name#lib} || return 0
3996     mkdir -p $name
3997     cat <<EOF > $name/$name.pc
3998 prefix=$prefix
3999 exec_prefix=\${prefix}
4000 libdir=$libdir
4001 includedir=$incdir
4002
4003 Name: $name
4004 Description: $comment
4005 Version: $version
4006 Requires: $(enabled shared || echo $requires)
4007 Requires.private: $(enabled shared && echo $requires)
4008 Conflicts:
4009 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4010 Libs.private: $(enabled shared && echo $libs)
4011 Cflags: -I\${includedir}
4012 EOF
4013     cat <<EOF > $name/$name-uninstalled.pc
4014 prefix=
4015 exec_prefix=
4016 libdir=\${pcfiledir}
4017 includedir=${source_path}
4018
4019 Name: $name
4020 Description: $comment
4021 Version: $version
4022 Requires: $requires
4023 Conflicts:
4024 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4025 Cflags: -I\${includedir}
4026 EOF
4027 }
4028
4029 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4030 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4031 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4032 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4033 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4034 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4035 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"