git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-raise-major     increase major version numbers in sonames [no]
 110
 111 Program options:
 112   --disable-programs       do not build command line programs
 113   --disable-ffmpeg         disable ffmpeg build
 114   --disable-ffplay         disable ffplay build
 115   --disable-ffprobe        disable ffprobe build
 116   --disable-ffserver       disable ffserver build
 117
 118 Documentation options:
 119   --disable-doc            do not build documentation
 120   --disable-htmlpages      do not build HTML documentation pages
 121   --disable-manpages       do not build man documentation pages
 122   --disable-podpages       do not build POD documentation pages
 123   --disable-txtpages       do not build text documentation pages
 124
 125 Component options:
 126   --disable-avdevice       disable libavdevice build
 127   --disable-avcodec        disable libavcodec build
 128   --disable-avformat       disable libavformat build
 129   --disable-avutil         disable libavutil build
 130   --disable-swresample     disable libswresample build
 131   --disable-swscale        disable libswscale build
 132   --disable-postproc       disable libpostproc build
 133   --disable-avfilter       disable libavfilter build
 134   --enable-avresample      enable libavresample build [no]
 135   --disable-pthreads       disable pthreads [auto]
 136   --disable-w32threads     disable Win32 threads [auto]
 137   --disable-os2threads     disable OS/2 threads [auto]
 138   --disable-network        disable network support [no]
 139   --disable-dct            disable DCT code
 140   --disable-dwt            disable DWT code
 141   --disable-error-resilience disable error resilience code
 142   --disable-lsp            disable LSP code
 143   --disable-lzo            disable LZO decoder code
 144   --disable-mdct           disable MDCT code
 145   --disable-rdft           disable RDFT code
 146   --disable-fft            disable FFT code
 147   --disable-pixelutils     disable pixel utils in libavutil
 148
 149 Hardware accelerators:
 150   --disable-dxva2          disable DXVA2 code [autodetect]
 151   --disable-vaapi          disable VAAPI code [autodetect]
 152   --disable-vda            disable VDA code [autodetect]
 153   --disable-vdpau          disable VDPAU code [autodetect]
 154
 155 Individual component options:
 156   --disable-everything     disable all components listed below
 157   --disable-encoder=NAME   disable encoder NAME
 158   --enable-encoder=NAME    enable encoder NAME
 159   --disable-encoders       disable all encoders
 160   --disable-decoder=NAME   disable decoder NAME
 161   --enable-decoder=NAME    enable decoder NAME
 162   --disable-decoders       disable all decoders
 163   --disable-hwaccel=NAME   disable hwaccel NAME
 164   --enable-hwaccel=NAME    enable hwaccel NAME
 165   --disable-hwaccels       disable all hwaccels
 166   --disable-muxer=NAME     disable muxer NAME
 167   --enable-muxer=NAME      enable muxer NAME
 168   --disable-muxers         disable all muxers
 169   --disable-demuxer=NAME   disable demuxer NAME
 170   --enable-demuxer=NAME    enable demuxer NAME
 171   --disable-demuxers       disable all demuxers
 172   --enable-parser=NAME     enable parser NAME
 173   --disable-parser=NAME    disable parser NAME
 174   --disable-parsers        disable all parsers
 175   --enable-bsf=NAME        enable bitstream filter NAME
 176   --disable-bsf=NAME       disable bitstream filter NAME
 177   --disable-bsfs           disable all bitstream filters
 178   --enable-protocol=NAME   enable protocol NAME
 179   --disable-protocol=NAME  disable protocol NAME
 180   --disable-protocols      disable all protocols
 181   --enable-indev=NAME      enable input device NAME
 182   --disable-indev=NAME     disable input device NAME
 183   --disable-indevs         disable input devices
 184   --enable-outdev=NAME     enable output device NAME
 185   --disable-outdev=NAME    disable output device NAME
 186   --disable-outdevs        disable output devices
 187   --disable-devices        disable all devices
 188   --enable-filter=NAME     enable filter NAME
 189   --disable-filter=NAME    disable filter NAME
 190   --disable-filters        disable all filters
 191
 192 External library support:
 193   --enable-avisynth        enable reading of AviSynth script files [no]
 194   --disable-bzlib          disable bzlib [autodetect]
 195   --enable-fontconfig      enable fontconfig
 196   --enable-frei0r          enable frei0r video filtering
 197   --enable-gnutls          enable gnutls [no]
 198   --disable-iconv          disable iconv [autodetect]
 199   --enable-ladspa          enable LADSPA audio filtering
 200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 201   --enable-libass          enable libass subtitles rendering [no]
 202   --enable-libbluray       enable BluRay reading using libbluray [no]
 203   --enable-libbs2b         enable bs2b DSP library [no]
 204   --enable-libcaca         enable textual display using libcaca
 205   --enable-libcelt         enable CELT decoding via libcelt [no]
 206   --enable-libcdio         enable audio CD grabbing with libcdio
 207   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 208                            and libraw1394 [no]
 209   --enable-libfaac         enable AAC encoding via libfaac [no]
 210   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 211   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 212   --enable-libfreetype     enable libfreetype [no]
 213   --enable-libfribidi      enable libfribidi [no]
 214   --enable-libgme          enable Game Music Emu via libgme [no]
 215   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 216   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 217   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 218   --enable-libmodplug      enable ModPlug via libmodplug [no]
 219   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 220   --enable-libnut          enable NUT (de)muxing via libnut,
 221                            native (de)muxer exists [no]
 222   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 223   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 224   --enable-libopencv       enable video filtering via libopencv [no]
 225   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 226   --enable-libopus         enable Opus de/encoding via libopus [no]
 227   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 228   --enable-libquvi         enable quvi input via libquvi [no]
 229   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 230   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 231   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 232   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 233   --enable-libsoxr         enable Include libsoxr resampling [no]
 234   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 235   --enable-libssh          enable SFTP protocol via libssh [no]
 236   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 237   --enable-libtheora       enable Theora encoding via libtheora [no]
 238   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 239   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 240   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 241   --enable-libvidstab      enable video stabilization using vid.stab [no]
 242   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 243   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 244   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 245                            native implementation exists [no]
 246   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 247   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 248   --enable-libwebp         enable WebP encoding via libwebp [no]
 249   --enable-libx264         enable H.264 encoding via x264 [no]
 250   --enable-libx265         enable HEVC encoding via x265 [no]
 251   --enable-libxavs         enable AVS encoding via xavs [no]
 252   --enable-libxvid         enable Xvid encoding via xvidcore,
 253                            native MPEG-4/Xvid encoder exists [no]
 254   --enable-libzmq          enable message passing via libzmq [no]
 255   --enable-libzvbi         enable teletext support via libzvbi [no]
 256   --enable-decklink        enable Blackmagick DeckLink output [no]
 257   --enable-openal          enable OpenAL 1.1 capture support [no]
 258   --enable-opencl          enable OpenCL code
 259   --enable-opengl          enable OpenGL rendering [no]
 260   --enable-openssl         enable openssl [no]
 261   --enable-x11grab         enable X11 grabbing [no]
 262   --disable-xlib           disable xlib [autodetect]
 263   --disable-zlib           disable zlib [autodetect]
 264
 265 Toolchain options:
 266   --arch=ARCH              select architecture [$arch]
 267   --cpu=CPU                select the minimum required CPU (affects
 268                            instruction selection, may crash on older CPUs)
 269   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 270   --progs-suffix=SUFFIX    program name suffix []
 271   --enable-cross-compile   assume a cross-compiler is used
 272   --sysroot=PATH           root of cross-build tree
 273   --sysinclude=PATH        location of cross-build system headers
 274   --target-os=OS           compiler targets OS [$target_os]
 275   --target-exec=CMD        command to run executables on target
 276   --target-path=DIR        path to view of build directory on target
 277   --target-samples=DIR     path to samples directory on target
 278   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 279   --toolchain=NAME         set tool defaults according to NAME
 280   --nm=NM                  use nm tool NM [$nm_default]
 281   --ar=AR                  use archive tool AR [$ar_default]
 282   --as=AS                  use assembler AS [$as_default]
 283   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 284   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 285   --cc=CC                  use C compiler CC [$cc_default]
 286   --cxx=CXX                use C compiler CXX [$cxx_default]
 287   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 288   --ld=LD                  use linker LD [$ld_default]
 289   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 290   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 291   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 292   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 293   --host-cc=HOSTCC         use host C compiler HOSTCC
 294   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 295   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 296   --host-ld=HOSTLD         use host linker HOSTLD
 297   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 298   --host-libs=HLIBS        use libs HLIBS when linking for host
 299   --host-os=OS             compiler host OS [$target_os]
 300   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 301   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 302   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 303   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 304   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 305   --extra-version=STRING   version string suffix []
 306   --optflags=OPTFLAGS      override optimization-related compiler flags
 307   --build-suffix=SUFFIX    library name suffix []
 308   --enable-pic             build position-independent code
 309   --enable-thumb           compile for Thumb instruction set
 310   --enable-lto             use link-time optimization
 311
 312 Advanced options (experts only):
 313   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 314   --disable-symver         disable symbol versioning
 315   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 316   --disable-safe-bitstream-reader
 317                            disable buffer boundary checking in bitreaders
 318                            (faster, but may crash)
 319   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 320   --enable-sram            allow use of on-chip SRAM
 321   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 322
 323 Optimization options (experts only):
 324   --disable-asm            disable all assembly optimizations
 325   --disable-altivec        disable AltiVec optimizations
 326   --disable-amd3dnow       disable 3DNow! optimizations
 327   --disable-amd3dnowext    disable 3DNow! extended optimizations
 328   --disable-mmx            disable MMX optimizations
 329   --disable-mmxext         disable MMXEXT optimizations
 330   --disable-sse            disable SSE optimizations
 331   --disable-sse2           disable SSE2 optimizations
 332   --disable-sse3           disable SSE3 optimizations
 333   --disable-ssse3          disable SSSE3 optimizations
 334   --disable-sse4           disable SSE4 optimizations
 335   --disable-sse42          disable SSE4.2 optimizations
 336   --disable-avx            disable AVX optimizations
 337   --disable-xop            disable XOP optimizations
 338   --disable-fma3           disable FMA3 optimizations
 339   --disable-fma4           disable FMA4 optimizations
 340   --disable-avx2           disable AVX2 optimizations
 341   --disable-armv5te        disable armv5te optimizations
 342   --disable-armv6          disable armv6 optimizations
 343   --disable-armv6t2        disable armv6t2 optimizations
 344   --disable-vfp            disable VFP optimizations
 345   --disable-neon           disable NEON optimizations
 346   --disable-inline-asm     disable use of inline assembly
 347   --disable-yasm           disable use of nasm/yasm assembly
 348   --disable-mips32r2       disable MIPS32R2 optimizations
 349   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 350   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 351   --disable-mipsfpu        disable floating point MIPS optimizations
 352   --disable-fast-unaligned consider unaligned accesses slow
 353
 354 Developer options (useful when working on FFmpeg itself):
 355   --disable-debug          disable debugging symbols
 356   --enable-debug=LEVEL     set the debug level [$debuglevel]
 357   --disable-optimizations  disable compiler optimizations
 358   --enable-extra-warnings  enable more compiler warnings
 359   --disable-stripping      disable stripping of executables and shared libraries
 360   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 361                            2 causes a slowdown at runtime.
 362   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 363   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 364                            leaks and errors, using the specified valgrind binary.
 365                            Cannot be combined with --target-exec
 366   --enable-ftrapv          Trap arithmetic overflows
 367   --samples=PATH           location of test samples for FATE, if not set use
 368                            \$FATE_SAMPLES at make invocation time.
 369   --enable-neon-clobber-test check NEON registers for clobbering (should be
 370                            used only for debugging purposes)
 371   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 372                            should be used only for debugging purposes)
 373   --enable-random          randomly enable/disable components
 374   --disable-random
 375   --enable-random=LIST     randomly enable/disable specific components or
 376   --disable-random=LIST    component groups. LIST is a comma-separated list
 377                            of NAME[:PROB] entries where NAME is a component
 378                            (group) and PROB the probability associated with
 379                            NAME (default 0.5).
 380   --random-seed=VALUE      seed value for --enable/disable-random
 381
 382 NOTE: Object files are built at the place where configure is launched.
 383 EOF
 384   exit 0
 385 }
 386
 387 quotes='""'
 388
 389 log(){
 390     echo "$@" >> $logfile
 391 }
 392
 393 log_file(){
 394     log BEGIN $1
 395     pr -n -t $1 >> $logfile
 396     log END $1
 397 }
 398
 399 echolog(){
 400     log "$@"
 401     echo "$@"
 402 }
 403
 404 warn(){
 405     log "WARNING: $*"
 406     WARNINGS="${WARNINGS}WARNING: $*\n"
 407 }
 408
 409 die(){
 410     echolog "$@"
 411     cat <<EOF
 412
 413 If you think configure made a mistake, make sure you are using the latest
 414 version from Git.  If the latest version fails, report the problem to the
 415 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 416 EOF
 417     if disabled logging; then
 418         cat <<EOF
 419 Rerun configure with logging enabled (do not use --disable-logging), and
 420 include the log this produces with your report.
 421 EOF
 422     else
 423         cat <<EOF
 424 Include the log file "$logfile" produced by configure as this will help
 425 solve the problem.
 426 EOF
 427     fi
 428     exit 1
 429 }
 430
 431 # Avoid locale weirdness, besides we really just want to translate ASCII.
 432 toupper(){
 433     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 434 }
 435
 436 tolower(){
 437     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 438 }
 439
 440 c_escape(){
 441     echo "$*" | sed 's/["\\]/\\\0/g'
 442 }
 443
 444 sh_quote(){
 445     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 446     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 447     echo "$v"
 448 }
 449
 450 cleanws(){
 451     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 452 }
 453
 454 filter(){
 455     pat=$1
 456     shift
 457     for v; do
 458         eval "case $v in $pat) echo $v ;; esac"
 459     done
 460 }
 461
 462 filter_out(){
 463     pat=$1
 464     shift
 465     for v; do
 466         eval "case $v in $pat) ;; *) echo $v ;; esac"
 467     done
 468 }
 469
 470 map(){
 471     m=$1
 472     shift
 473     for v; do eval $m; done
 474 }
 475
 476 add_suffix(){
 477     suffix=$1
 478     shift
 479     for v; do echo ${v}${suffix}; done
 480 }
 481
 482 set_all(){
 483     value=$1
 484     shift
 485     for var in $*; do
 486         eval $var=$value
 487     done
 488 }
 489
 490 set_weak(){
 491     value=$1
 492     shift
 493     for var; do
 494         eval : \${$var:=$value}
 495     done
 496 }
 497
 498 sanitize_var_name(){
 499     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 500 }
 501
 502 set_safe(){
 503     var=$1
 504     shift
 505     eval $(sanitize_var_name "$var")='$*'
 506 }
 507
 508 get_safe(){
 509     eval echo \$$(sanitize_var_name "$1")
 510 }
 511
 512 pushvar(){
 513     for pvar in $*; do
 514         eval level=\${${pvar}_level:=0}
 515         eval ${pvar}_${level}="\$$pvar"
 516         eval ${pvar}_level=$(($level+1))
 517     done
 518 }
 519
 520 popvar(){
 521     for pvar in $*; do
 522         eval level=\${${pvar}_level:-0}
 523         test $level = 0 && continue
 524         eval level=$(($level-1))
 525         eval $pvar="\${${pvar}_${level}}"
 526         eval ${pvar}_level=$level
 527         eval unset ${pvar}_${level}
 528     done
 529 }
 530
 531 enable(){
 532     set_all yes $*
 533 }
 534
 535 disable(){
 536     set_all no $*
 537 }
 538
 539 enable_weak(){
 540     set_weak yes $*
 541 }
 542
 543 disable_weak(){
 544     set_weak no $*
 545 }
 546
 547 enable_safe(){
 548     for var; do
 549         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 550     done
 551 }
 552
 553 disable_safe(){
 554     for var; do
 555         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 556     done
 557 }
 558
 559 do_enable_deep(){
 560     for var; do
 561         enabled $var && continue
 562         eval sel="\$${var}_select"
 563         eval sgs="\$${var}_suggest"
 564         pushvar var sgs
 565         enable_deep $sel
 566         popvar sgs
 567         enable_deep_weak $sgs
 568         popvar var
 569     done
 570 }
 571
 572 enable_deep(){
 573     do_enable_deep $*
 574     enable $*
 575 }
 576
 577 enable_deep_weak(){
 578     for var; do
 579         disabled $var && continue
 580         pushvar var
 581         do_enable_deep $var
 582         popvar var
 583         enable_weak $var
 584     done
 585 }
 586
 587 enabled(){
 588     test "${1#!}" = "$1" && op== || op=!=
 589     eval test "x\$${1#!}" $op "xyes"
 590 }
 591
 592 disabled(){
 593     test "${1#!}" = "$1" && op== || op=!=
 594     eval test "x\$${1#!}" $op "xno"
 595 }
 596
 597 enabled_all(){
 598     for opt; do
 599         enabled $opt || return 1
 600     done
 601 }
 602
 603 disabled_all(){
 604     for opt; do
 605         disabled $opt || return 1
 606     done
 607 }
 608
 609 enabled_any(){
 610     for opt; do
 611         enabled $opt && return 0
 612     done
 613 }
 614
 615 disabled_any(){
 616     for opt; do
 617         disabled $opt && return 0
 618     done
 619     return 1
 620 }
 621
 622 set_default(){
 623     for opt; do
 624         eval : \${$opt:=\$${opt}_default}
 625     done
 626 }
 627
 628 is_in(){
 629     value=$1
 630     shift
 631     for var in $*; do
 632         [ $var = $value ] && return 0
 633     done
 634     return 1
 635 }
 636
 637 do_check_deps(){
 638     for cfg; do
 639         cfg="${cfg#!}"
 640         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 641         disabled ${cfg}_checking && continue
 642         enable ${cfg}_checking
 643         append allopts $cfg
 644
 645         eval dep_all="\$${cfg}_deps"
 646         eval dep_any="\$${cfg}_deps_any"
 647         eval dep_sel="\$${cfg}_select"
 648         eval dep_sgs="\$${cfg}_suggest"
 649         eval dep_ifa="\$${cfg}_if"
 650         eval dep_ifn="\$${cfg}_if_any"
 651
 652         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 653         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 654         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 655
 656         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 657         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 658         enabled_all  $dep_all || disable $cfg
 659         enabled_any  $dep_any || disable $cfg
 660         disabled_any $dep_sel && disable $cfg
 661
 662         if enabled $cfg; then
 663             enable_deep $dep_sel
 664             enable_deep_weak $dep_sgs
 665         fi
 666
 667         disable ${cfg}_checking
 668     done
 669 }
 670
 671 check_deps(){
 672     unset allopts
 673
 674     do_check_deps "$@"
 675
 676     for cfg in $allopts; do
 677         enabled $cfg || continue
 678         eval dep_extralibs="\$${cfg}_extralibs"
 679         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 680     done
 681 }
 682
 683 print_config(){
 684     pfx=$1
 685     files=$2
 686     shift 2
 687     map 'eval echo "$v \${$v:-no}"' "$@" |
 688     awk "BEGIN { split(\"$files\", files) }
 689         {
 690             c = \"$pfx\" toupper(\$1);
 691             v = \$2;
 692             sub(/yes/, 1, v);
 693             sub(/no/,  0, v);
 694             for (f in files) {
 695                 file = files[f];
 696                 if (file ~ /\\.h\$/) {
 697                     printf(\"#define %s %d\\n\", c, v) >>file;
 698                 } else if (file ~ /\\.asm\$/) {
 699                     printf(\"%%define %s %d\\n\", c, v) >>file;
 700                 } else if (file ~ /\\.mak\$/) {
 701                     n = -v ? \"\" : \"!\";
 702                     printf(\"%s%s=yes\\n\", n, c) >>file;
 703                 } else if (file ~ /\\.texi\$/) {
 704                     pre = -v ? \"\" : \"@c \";
 705                     yesno = \$2;
 706                     c2 = tolower(c);
 707                     gsub(/_/, \"-\", c2);
 708                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 709                 }
 710             }
 711         }"
 712 }
 713
 714 print_enabled(){
 715     suf=$1
 716     shift
 717     for v; do
 718         enabled $v && printf "%s\n" ${v%$suf};
 719     done
 720 }
 721
 722 append(){
 723     var=$1
 724     shift
 725     eval "$var=\"\$$var $*\""
 726 }
 727
 728 prepend(){
 729     var=$1
 730     shift
 731     eval "$var=\"$* \$$var\""
 732 }
 733
 734 unique(){
 735     var=$1
 736     uniq_list=""
 737     for tok in $(eval echo \$$var); do
 738         uniq_list="$(filter_out $tok $uniq_list) $tok"
 739     done
 740     eval "$var=\"${uniq_list}\""
 741 }
 742
 743 add_cppflags(){
 744     append CPPFLAGS "$@"
 745 }
 746
 747 add_cflags(){
 748     append CFLAGS $($cflags_filter "$@")
 749 }
 750
 751 add_cxxflags(){
 752     append CXXFLAGS $($cflags_filter "$@")
 753 }
 754
 755 add_asflags(){
 756     append ASFLAGS $($asflags_filter "$@")
 757 }
 758
 759 add_ldflags(){
 760     append LDFLAGS $($ldflags_filter "$@")
 761 }
 762
 763 add_ldexeflags(){
 764     append LDEXEFLAGS $($ldflags_filter "$@")
 765 }
 766
 767 add_stripflags(){
 768     append ASMSTRIPFLAGS "$@"
 769 }
 770
 771 add_extralibs(){
 772     prepend extralibs $($ldflags_filter "$@")
 773 }
 774
 775 add_host_cppflags(){
 776     append host_cppflags "$@"
 777 }
 778
 779 add_host_cflags(){
 780     append host_cflags $($host_cflags_filter "$@")
 781 }
 782
 783 add_host_ldflags(){
 784     append host_ldflags $($host_ldflags_filter "$@")
 785 }
 786
 787 add_compat(){
 788     append compat_objs $1
 789     shift
 790     map 'add_cppflags -D$v' "$@"
 791 }
 792
 793 check_cmd(){
 794     log "$@"
 795     "$@" >> $logfile 2>&1
 796 }
 797
 798 check_stat(){
 799     log check_stat "$@"
 800     stat "$1" >> $logfile 2>&1
 801 }
 802
 803 cc_o(){
 804     eval printf '%s\\n' $CC_O
 805 }
 806
 807 cc_e(){
 808     eval printf '%s\\n' $CC_E
 809 }
 810
 811 check_cc(){
 812     log check_cc "$@"
 813     cat > $TMPC
 814     log_file $TMPC
 815     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 816 }
 817
 818 check_cxx(){
 819     log check_cxx "$@"
 820     cat > $TMPCPP
 821     log_file $TMPCPP
 822     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 823 }
 824
 825 check_oc(){
 826     log check_oc "$@"
 827     cat > $TMPM
 828     log_file $TMPM
 829     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 830 }
 831
 832 check_cpp(){
 833     log check_cpp "$@"
 834     cat > $TMPC
 835     log_file $TMPC
 836     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 837 }
 838
 839 as_o(){
 840     eval printf '%s\\n' $AS_O
 841 }
 842
 843 check_as(){
 844     log check_as "$@"
 845     cat > $TMPS
 846     log_file $TMPS
 847     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 848 }
 849
 850 check_inline_asm(){
 851     log check_inline_asm "$@"
 852     name="$1"
 853     code="$2"
 854     shift 2
 855     disable $name
 856     check_cc "$@" <<EOF && enable $name
 857 void foo(void){ __asm__ volatile($code); }
 858 EOF
 859 }
 860
 861 check_insn(){
 862     log check_insn "$@"
 863     check_inline_asm ${1}_inline "\"$2\""
 864     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 865 }
 866
 867 check_yasm(){
 868     log check_yasm "$@"
 869     echo "$1" > $TMPS
 870     log_file $TMPS
 871     shift 1
 872     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 873 }
 874
 875 ld_o(){
 876     eval printf '%s\\n' $LD_O
 877 }
 878
 879 check_ld(){
 880     log check_ld "$@"
 881     type=$1
 882     shift 1
 883     flags=$(filter_out '-l*|*.so' $@)
 884     libs=$(filter '-l*|*.so' $@)
 885     check_$type $($cflags_filter $flags) || return
 886     flags=$($ldflags_filter $flags)
 887     libs=$($ldflags_filter $libs)
 888     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 889 }
 890
 891 print_include(){
 892     hdr=$1
 893     test "${hdr%.h}" = "${hdr}" &&
 894         echo "#include $hdr"    ||
 895         echo "#include <$hdr>"
 896 }
 897
 898 check_code(){
 899     log check_code "$@"
 900     check=$1
 901     headers=$2
 902     code=$3
 903     shift 3
 904     {
 905         for hdr in $headers; do
 906             print_include $hdr
 907         done
 908         echo "int main(void) { $code; return 0; }"
 909     } | check_$check "$@"
 910 }
 911
 912 check_cppflags(){
 913     log check_cppflags "$@"
 914     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 915 int x;
 916 EOF
 917 }
 918
 919 test_cflags(){
 920     log test_cflags "$@"
 921     set -- $($cflags_filter "$@")
 922     check_cc "$@" <<EOF
 923 int x;
 924 EOF
 925 }
 926
 927 check_cflags(){
 928     log check_cflags "$@"
 929     test_cflags "$@" && add_cflags "$@"
 930 }
 931
 932 check_cxxflags(){
 933     log check_cxxflags "$@"
 934     set -- $($cflags_filter "$@")
 935     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 936 int x;
 937 EOF
 938 }
 939
 940 test_ldflags(){
 941     log test_ldflags "$@"
 942     check_ld "cc" "$@" <<EOF
 943 int main(void){ return 0; }
 944 EOF
 945 }
 946
 947 check_ldflags(){
 948     log check_ldflags "$@"
 949     test_ldflags "$@" && add_ldflags "$@"
 950 }
 951
 952 test_stripflags(){
 953     log test_stripflags "$@"
 954     # call check_cc to get a fresh TMPO
 955     check_cc <<EOF
 956 int main(void) { return 0; }
 957 EOF
 958     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 959 }
 960
 961 check_stripflags(){
 962     log check_stripflags "$@"
 963     test_stripflags "$@" && add_stripflags "$@"
 964 }
 965
 966 check_header(){
 967     log check_header "$@"
 968     header=$1
 969     shift
 970     disable_safe $header
 971     check_cpp "$@" <<EOF && enable_safe $header
 972 #include <$header>
 973 int x;
 974 EOF
 975 }
 976
 977 check_header_oc(){
 978     log check_header_oc "$@"
 979     rm -f -- "$TMPO"
 980     header=$1
 981     shift
 982     disable_safe $header
 983     {
 984        echo "#include <$header>"
 985        echo "int main(void) { return 0; }"
 986     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 987 }
 988
 989 check_func(){
 990     log check_func "$@"
 991     func=$1
 992     shift
 993     disable $func
 994     check_ld "cc" "$@" <<EOF && enable $func
 995 extern int $func();
 996 int main(void){ $func(); }
 997 EOF
 998 }
 999
1000 check_mathfunc(){
1001     log check_mathfunc "$@"
1002     func=$1
1003     narg=$2
1004     shift 2
1005     test $narg = 2 && args="f, g" || args="f"
1006     disable $func
1007     check_ld "cc" "$@" <<EOF && enable $func
1008 #include <math.h>
1009 float foo(float f, float g) { return $func($args); }
1010 int main(void){ return (int) foo; }
1011 EOF
1012 }
1013
1014 check_func_headers(){
1015     log check_func_headers "$@"
1016     headers=$1
1017     funcs=$2
1018     shift 2
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         for func in $funcs; do
1024             echo "long check_$func(void) { return (long) $func; }"
1025         done
1026         echo "int main(void) { return 0; }"
1027     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1028 }
1029
1030 check_class_headers_cpp(){
1031     log check_class_headers_cpp "$@"
1032     headers=$1
1033     classes=$2
1034     shift 2
1035     {
1036         for hdr in $headers; do
1037             echo "#include <$hdr>"
1038         done
1039         echo "int main(void) { "
1040         i=1
1041         for class in $classes; do
1042             echo "$class obj$i;"
1043             i=$(expr $i + 1)
1044         done
1045         echo "return 0; }"
1046     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1047 }
1048
1049 check_cpp_condition(){
1050     log check_cpp_condition "$@"
1051     header=$1
1052     condition=$2
1053     shift 2
1054     check_cpp "$@" <<EOF
1055 #include <$header>
1056 #if !($condition)
1057 #error "unsatisfied condition: $condition"
1058 #endif
1059 EOF
1060 }
1061
1062 check_lib(){
1063     log check_lib "$@"
1064     header="$1"
1065     func="$2"
1066     shift 2
1067     check_header $header && check_func $func "$@" && add_extralibs "$@"
1068 }
1069
1070 check_lib2(){
1071     log check_lib2 "$@"
1072     headers="$1"
1073     funcs="$2"
1074     shift 2
1075     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1076 }
1077
1078 check_lib_cpp(){
1079     log check_lib_cpp "$@"
1080     headers="$1"
1081     classes="$2"
1082     shift 2
1083     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1084 }
1085
1086 check_pkg_config(){
1087     log check_pkg_config "$@"
1088     pkgandversion="$1"
1089     pkg="${1%% *}"
1090     headers="$2"
1091     funcs="$3"
1092     shift 3
1093     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1094     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1095     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1096     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1097         set_safe ${pkg}_cflags $pkg_cflags   &&
1098         set_safe ${pkg}_libs   $pkg_libs
1099 }
1100
1101 check_exec(){
1102     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1103 }
1104
1105 check_exec_crash(){
1106     code=$(cat)
1107
1108     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1109     # are safe but may not be available everywhere.  Thus we use
1110     # raise(SIGTERM) instead.  The check is run in a subshell so we
1111     # can redirect the "Terminated" message from the shell.  SIGBUS
1112     # is not defined by standard C so it is used conditionally.
1113
1114     (check_exec "$@") >> $logfile 2>&1 <<EOF
1115 #include <signal.h>
1116 static void sighandler(int sig){
1117     raise(SIGTERM);
1118 }
1119 int foo(void){
1120     $code
1121 }
1122 int (*func_ptr)(void) = foo;
1123 int main(void){
1124     signal(SIGILL, sighandler);
1125     signal(SIGFPE, sighandler);
1126     signal(SIGSEGV, sighandler);
1127 #ifdef SIGBUS
1128     signal(SIGBUS, sighandler);
1129 #endif
1130     return func_ptr();
1131 }
1132 EOF
1133 }
1134
1135 check_type(){
1136     log check_type "$@"
1137     headers=$1
1138     type=$2
1139     shift 2
1140     disable_safe "$type"
1141     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1142 }
1143
1144 check_struct(){
1145     log check_struct "$@"
1146     headers=$1
1147     struct=$2
1148     member=$3
1149     shift 3
1150     disable_safe "${struct}_${member}"
1151     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1152         enable_safe "${struct}_${member}"
1153 }
1154
1155 check_builtin(){
1156     log check_builtin "$@"
1157     name=$1
1158     headers=$2
1159     builtin=$3
1160     shift 3
1161     disable "$name"
1162     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1163 }
1164
1165 check_compile_assert(){
1166     log check_compile_assert "$@"
1167     name=$1
1168     headers=$2
1169     condition=$3
1170     shift 3
1171     disable "$name"
1172     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1173 }
1174
1175 require(){
1176     name="$1"
1177     header="$2"
1178     func="$3"
1179     shift 3
1180     check_lib $header $func "$@" || die "ERROR: $name not found"
1181 }
1182
1183 require2(){
1184     name="$1"
1185     headers="$2"
1186     func="$3"
1187     shift 3
1188     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1189 }
1190
1191 require_cpp(){
1192     name="$1"
1193     headers="$2"
1194     classes="$3"
1195     shift 3
1196     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1197 }
1198
1199 require_pkg_config(){
1200     pkg="$1"
1201     check_pkg_config "$@" || die "ERROR: $pkg not found"
1202     add_cflags    $(get_safe ${pkg}_cflags)
1203     add_extralibs $(get_safe ${pkg}_libs)
1204 }
1205
1206 require_libfreetype(){
1207     log require_libfreetype "$@"
1208     pkg="freetype2"
1209     check_cmd $pkg_config --exists --print-errors $pkg \
1210       || die "ERROR: $pkg not found"
1211     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1212     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1213     {
1214         echo "#include <ft2build.h>"
1215         echo "#include FT_FREETYPE_H"
1216         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1217         echo "int main(void) { return 0; }"
1218     } | check_ld "cc" $pkg_cflags $pkg_libs \
1219       && set_safe ${pkg}_cflags $pkg_cflags \
1220       && set_safe ${pkg}_libs   $pkg_libs \
1221       || die "ERROR: $pkg not found"
1222     add_cflags    $(get_safe ${pkg}_cflags)
1223     add_extralibs $(get_safe ${pkg}_libs)
1224 }
1225
1226 hostcc_e(){
1227     eval printf '%s\\n' $HOSTCC_E
1228 }
1229
1230 hostcc_o(){
1231     eval printf '%s\\n' $HOSTCC_O
1232 }
1233
1234 check_host_cc(){
1235     log check_host_cc "$@"
1236     cat > $TMPC
1237     log_file $TMPC
1238     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1239 }
1240
1241 check_host_cpp(){
1242     log check_host_cpp "$@"
1243     cat > $TMPC
1244     log_file $TMPC
1245     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1246 }
1247
1248 check_host_cppflags(){
1249     log check_host_cppflags "$@"
1250     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1251 int x;
1252 EOF
1253 }
1254
1255 check_host_cflags(){
1256     log check_host_cflags "$@"
1257     set -- $($host_cflags_filter "$@")
1258     check_host_cc "$@" <<EOF && append host_cflags "$@"
1259 int x;
1260 EOF
1261 }
1262
1263 check_host_cpp_condition(){
1264     log check_host_cpp_condition "$@"
1265     header=$1
1266     condition=$2
1267     shift 2
1268     check_host_cpp "$@" <<EOF
1269 #include <$header>
1270 #if !($condition)
1271 #error "unsatisfied condition: $condition"
1272 #endif
1273 EOF
1274 }
1275
1276 apply(){
1277     file=$1
1278     shift
1279     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1280 }
1281
1282 cp_if_changed(){
1283     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1284     mkdir -p "$(dirname $2)"
1285     $cp_f "$1" "$2"
1286 }
1287
1288 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1289 # system-dependent things.
1290
1291 COMPONENT_LIST="
1292     bsfs
1293     decoders
1294     demuxers
1295     encoders
1296     filters
1297     hwaccels
1298     indevs
1299     muxers
1300     outdevs
1301     parsers
1302     protocols
1303 "
1304
1305 EXAMPLE_LIST="
1306     avio_reading_example
1307     decoding_encoding_example
1308     demuxing_decoding_example
1309     filter_audio_example
1310     filtering_audio_example
1311     filtering_video_example
1312     metadata_example
1313     muxing_example
1314     remuxing_example
1315     resampling_audio_example
1316     scaling_video_example
1317     transcode_aac_example
1318     transcoding_example
1319 "
1320
1321 EXTERNAL_LIBRARY_LIST="
1322     avisynth
1323     bzlib
1324     crystalhd
1325     decklink
1326     frei0r
1327     gnutls
1328     iconv
1329     ladspa
1330     libaacplus
1331     libass
1332     libbluray
1333     libbs2b
1334     libcaca
1335     libcdio
1336     libcelt
1337     libdc1394
1338     libfaac
1339     libfdk_aac
1340     libflite
1341     libfontconfig
1342     libfreetype
1343     libfribidi
1344     libgme
1345     libgsm
1346     libiec61883
1347     libilbc
1348     libmodplug
1349     libmp3lame
1350     libnut
1351     libopencore_amrnb
1352     libopencore_amrwb
1353     libopencv
1354     libopenjpeg
1355     libopus
1356     libpulse
1357     libquvi
1358     librtmp
1359     libschroedinger
1360     libshine
1361     libsmbclient
1362     libsoxr
1363     libspeex
1364     libssh
1365     libstagefright_h264
1366     libtheora
1367     libtwolame
1368     libutvideo
1369     libv4l2
1370     libvidstab
1371     libvo_aacenc
1372     libvo_amrwbenc
1373     libvorbis
1374     libvpx
1375     libwavpack
1376     libwebp
1377     libx264
1378     libx265
1379     libxavs
1380     libxvid
1381     libzmq
1382     libzvbi
1383     openal
1384     opencl
1385     opengl
1386     openssl
1387     x11grab
1388     xlib
1389     zlib
1390 "
1391
1392 DOCUMENT_LIST="
1393     doc
1394     htmlpages
1395     manpages
1396     podpages
1397     txtpages
1398 "
1399
1400 FEATURE_LIST="
1401     ftrapv
1402     gray
1403     hardcoded_tables
1404     runtime_cpudetect
1405     safe_bitstream_reader
1406     shared
1407     small
1408     sram
1409     static
1410     swscale_alpha
1411 "
1412
1413 HWACCEL_LIST="
1414     dxva2
1415     vaapi
1416     vda
1417     vdpau
1418     xvmc
1419 "
1420
1421 LIBRARY_LIST="
1422     avcodec
1423     avdevice
1424     avfilter
1425     avformat
1426     avresample
1427     avutil
1428     postproc
1429     swresample
1430     swscale
1431 "
1432
1433 LICENSE_LIST="
1434     gpl
1435     nonfree
1436     version3
1437 "
1438
1439 PROGRAM_LIST="
1440     ffplay
1441     ffprobe
1442     ffserver
1443     ffmpeg
1444 "
1445
1446 SUBSYSTEM_LIST="
1447     dct
1448     dwt
1449     error_resilience
1450     fast_unaligned
1451     fft
1452     lsp
1453     lzo
1454     mdct
1455     pixelutils
1456     network
1457     rdft
1458 "
1459
1460 CONFIG_LIST="
1461     $COMPONENT_LIST
1462     $DOCUMENT_LIST
1463     $EXAMPLE_LIST
1464     $EXTERNAL_LIBRARY_LIST
1465     $FEATURE_LIST
1466     $HWACCEL_LIST
1467     $LICENSE_LIST
1468     $LIBRARY_LIST
1469     $PROGRAM_LIST
1470     $SUBSYSTEM_LIST
1471     fontconfig
1472     incompatible_libav_abi
1473     memalign_hack
1474     memory_poisoning
1475     neon_clobber_test
1476     pic
1477     pod2man
1478     raise_major
1479     thumb
1480     xmm_clobber_test
1481 "
1482
1483 THREADS_LIST="
1484     pthreads
1485     os2threads
1486     w32threads
1487 "
1488
1489 ATOMICS_LIST="
1490     atomics_gcc
1491     atomics_suncc
1492     atomics_win32
1493 "
1494
1495 ARCH_LIST="
1496     aarch64
1497     alpha
1498     arm
1499     avr32
1500     avr32_ap
1501     avr32_uc
1502     bfin
1503     ia64
1504     m68k
1505     mips
1506     mips64
1507     parisc
1508     ppc
1509     ppc64
1510     s390
1511     sh4
1512     sparc
1513     sparc64
1514     tilegx
1515     tilepro
1516     tomi
1517     x86
1518     x86_32
1519     x86_64
1520 "
1521
1522 ARCH_EXT_LIST_ARM="
1523     armv5te
1524     armv6
1525     armv6t2
1526     armv8
1527     neon
1528     vfp
1529     vfpv3
1530 "
1531
1532 ARCH_EXT_LIST_MIPS="
1533     mipsfpu
1534     mips32r2
1535     mipsdspr1
1536     mipsdspr2
1537 "
1538
1539 ARCH_EXT_LIST_X86_SIMD="
1540     amd3dnow
1541     amd3dnowext
1542     avx
1543     avx2
1544     fma3
1545     fma4
1546     mmx
1547     mmxext
1548     sse
1549     sse2
1550     sse3
1551     sse4
1552     sse42
1553     ssse3
1554     xop
1555 "
1556
1557 ARCH_EXT_LIST_PPC="
1558     altivec
1559     dcbzl
1560     ldbrx
1561     ppc4xx
1562     vsx
1563 "
1564
1565 ARCH_EXT_LIST_X86="
1566     $ARCH_EXT_LIST_X86_SIMD
1567     cpunop
1568     i686
1569 "
1570
1571 ARCH_EXT_LIST="
1572     $ARCH_EXT_LIST_ARM
1573     $ARCH_EXT_LIST_PPC
1574     $ARCH_EXT_LIST_X86
1575     $ARCH_EXT_LIST_MIPS
1576     loongson
1577 "
1578
1579 ARCH_FEATURES="
1580     aligned_stack
1581     fast_64bit
1582     fast_clz
1583     fast_cmov
1584     local_aligned_8
1585     local_aligned_16
1586     local_aligned_32
1587     simd_align_16
1588 "
1589
1590 BUILTIN_LIST="
1591     atomic_cas_ptr
1592     machine_rw_barrier
1593     MemoryBarrier
1594     mm_empty
1595     rdtsc
1596     sarestart
1597     sync_val_compare_and_swap
1598 "
1599 HAVE_LIST_CMDLINE="
1600     inline_asm
1601     symver
1602     yasm
1603 "
1604
1605 HAVE_LIST_PUB="
1606     bigendian
1607     fast_unaligned
1608     incompatible_libav_abi
1609 "
1610
1611 HEADERS_LIST="
1612     alsa_asoundlib_h
1613     altivec_h
1614     arpa_inet_h
1615     asm_types_h
1616     cdio_paranoia_h
1617     cdio_paranoia_paranoia_h
1618     CL_cl_h
1619     dev_bktr_ioctl_bt848_h
1620     dev_bktr_ioctl_meteor_h
1621     dev_ic_bt8xx_h
1622     dev_video_bktr_ioctl_bt848_h
1623     dev_video_meteor_ioctl_meteor_h
1624     direct_h
1625     dlfcn_h
1626     dxva_h
1627     ES2_gl_h
1628     gsm_h
1629     io_h
1630     mach_mach_time_h
1631     machine_ioctl_bt848_h
1632     machine_ioctl_meteor_h
1633     malloc_h
1634     openjpeg_1_5_openjpeg_h
1635     OpenGL_gl3_h
1636     poll_h
1637     sndio_h
1638     soundcard_h
1639     sys_mman_h
1640     sys_param_h
1641     sys_resource_h
1642     sys_select_h
1643     sys_soundcard_h
1644     sys_time_h
1645     sys_un_h
1646     sys_videoio_h
1647     termios_h
1648     unistd_h
1649     windows_h
1650     winsock2_h
1651 "
1652
1653 INTRINSICS_LIST="
1654     intrinsics_neon
1655 "
1656
1657 MATH_FUNCS="
1658     atanf
1659     atan2f
1660     cbrt
1661     cbrtf
1662     cosf
1663     exp2
1664     exp2f
1665     expf
1666     fminf
1667     isinf
1668     isnan
1669     ldexpf
1670     llrint
1671     llrintf
1672     log2
1673     log2f
1674     log10f
1675     lrint
1676     lrintf
1677     powf
1678     rint
1679     round
1680     roundf
1681     sinf
1682     trunc
1683     truncf
1684 "
1685
1686 SYSTEM_FUNCS="
1687     access
1688     aligned_malloc
1689     clock_gettime
1690     closesocket
1691     CommandLineToArgvW
1692     CoTaskMemFree
1693     CryptGenRandom
1694     dlopen
1695     fcntl
1696     flt_lim
1697     fork
1698     getaddrinfo
1699     gethrtime
1700     getopt
1701     GetProcessAffinityMask
1702     GetProcessMemoryInfo
1703     GetProcessTimes
1704     getrusage
1705     getservbyport
1706     GetSystemTimeAsFileTime
1707     gettimeofday
1708     glob
1709     glXGetProcAddress
1710     inet_aton
1711     isatty
1712     jack_port_get_latency_range
1713     kbhit
1714     localtime_r
1715     lzo1x_999_compress
1716     mach_absolute_time
1717     MapViewOfFile
1718     memalign
1719     mkstemp
1720     mmap
1721     mprotect
1722     nanosleep
1723     PeekNamedPipe
1724     posix_memalign
1725     pthread_cancel
1726     sched_getaffinity
1727     SetConsoleTextAttribute
1728     setmode
1729     setrlimit
1730     Sleep
1731     strerror_r
1732     sysconf
1733     sysctl
1734     usleep
1735     VirtualAlloc
1736     wglGetProcAddress
1737 "
1738
1739 TOOLCHAIN_FEATURES="
1740     as_dn_directive
1741     as_func
1742     asm_mod_q
1743     attribute_may_alias
1744     attribute_packed
1745     ebp_available
1746     ebx_available
1747     gnu_as
1748     gnu_windres
1749     ibm_asm
1750     inline_asm_labels
1751     inline_asm_nonlocal_labels
1752     inline_asm_direct_symbol_refs
1753     pragma_deprecated
1754     rsync_contimeout
1755     symver_asm_label
1756     symver_gnu_asm
1757     vfp_args
1758     xform_asm
1759     xmm_clobbers
1760 "
1761
1762 TYPES_LIST="
1763     socklen_t
1764     struct_addrinfo
1765     struct_group_source_req
1766     struct_ip_mreq_source
1767     struct_ipv6_mreq
1768     struct_pollfd
1769     struct_rusage_ru_maxrss
1770     struct_sctp_event_subscribe
1771     struct_sockaddr_in6
1772     struct_sockaddr_sa_len
1773     struct_sockaddr_storage
1774     struct_stat_st_mtim_tv_nsec
1775     struct_v4l2_frmivalenum_discrete
1776 "
1777
1778 HAVE_LIST="
1779     $ARCH_EXT_LIST
1780     $(add_suffix _external $ARCH_EXT_LIST)
1781     $(add_suffix _inline   $ARCH_EXT_LIST)
1782     $ARCH_FEATURES
1783     $ATOMICS_LIST
1784     $BUILTIN_LIST
1785     $HAVE_LIST_CMDLINE
1786     $HAVE_LIST_PUB
1787     $HEADERS_LIST
1788     $INTRINSICS_LIST
1789     $MATH_FUNCS
1790     $SYSTEM_FUNCS
1791     $THREADS_LIST
1792     $TOOLCHAIN_FEATURES
1793     $TYPES_LIST
1794     atomics_native
1795     dos_paths
1796     dxva2api_cobj
1797     dxva2_lib
1798     libc_msvcrt
1799     libdc1394_1
1800     libdc1394_2
1801     makeinfo
1802     perl
1803     pod2man
1804     sdl
1805     texi2html
1806     threads
1807     vdpau_x11
1808     xlib
1809 "
1810
1811 # options emitted with CONFIG_ prefix but not available on the command line
1812 CONFIG_EXTRA="
1813     aandcttables
1814     ac3dsp
1815     audio_frame_queue
1816     audiodsp
1817     blockdsp
1818     bswapdsp
1819     cabac
1820     dvprofile
1821     exif
1822     fdctdsp
1823     frame_thread_encoder
1824     gcrypt
1825     golomb
1826     gplv3
1827     h263dsp
1828     h264chroma
1829     h264dsp
1830     h264pred
1831     h264qpel
1832     hpeldsp
1833     huffman
1834     huffyuvdsp
1835     huffyuvencdsp
1836     idctdsp
1837     iirfilter
1838     intrax8
1839     lgplv3
1840     llauddsp
1841     llviddsp
1842     lpc
1843     me_cmp
1844     mpeg_er
1845     mpegaudio
1846     mpegaudiodsp
1847     mpegvideo
1848     mpegvideoenc
1849     nettle
1850     pixblockdsp
1851     qpeldsp
1852     rangecoder
1853     riffdec
1854     riffenc
1855     rtpdec
1856     rtpenc_chain
1857     sinewin
1858     startcode
1859     tpeldsp
1860     videodsp
1861     vp3dsp
1862 "
1863
1864 CMDLINE_SELECT="
1865     $ARCH_EXT_LIST
1866     $CONFIG_LIST
1867     $HAVE_LIST_CMDLINE
1868     $THREADS_LIST
1869     asm
1870     cross_compile
1871     debug
1872     extra_warnings
1873     logging
1874     lto
1875     optimizations
1876     rpath
1877     stripping
1878 "
1879
1880 PATHS_LIST="
1881     bindir
1882     datadir
1883     docdir
1884     incdir
1885     libdir
1886     mandir
1887     prefix
1888     shlibdir
1889 "
1890
1891 CMDLINE_SET="
1892     $PATHS_LIST
1893     ar
1894     arch
1895     as
1896     assert_level
1897     build_suffix
1898     cc
1899     cpu
1900     cross_prefix
1901     cxx
1902     dep_cc
1903     doxygen
1904     extra_version
1905     gas
1906     host_cc
1907     host_cflags
1908     host_ld
1909     host_ldflags
1910     host_libs
1911     host_os
1912     install
1913     ld
1914     logfile
1915     malloc_prefix
1916     nm
1917     optflags
1918     pkg_config
1919     pkg_config_flags
1920     progs_suffix
1921     random_seed
1922     ranlib
1923     samples
1924     strip
1925     sws_max_filter_size
1926     sysinclude
1927     sysroot
1928     target_exec
1929     target_os
1930     target_path
1931     target_samples
1932     tempprefix
1933     toolchain
1934     valgrind
1935     yasmexe
1936 "
1937
1938 CMDLINE_APPEND="
1939     extra_cflags
1940     extra_cxxflags
1941     host_cppflags
1942 "
1943
1944 # code dependency declarations
1945
1946 # architecture extensions
1947
1948 armv5te_deps="arm"
1949 armv6_deps="arm"
1950 armv6t2_deps="arm"
1951 armv8_deps="aarch64"
1952 neon_deps_any="aarch64 arm"
1953 intrinsics_neon_deps="neon"
1954 vfp_deps_any="aarch64 arm"
1955 vfpv3_deps="vfp"
1956
1957 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1958
1959 mipsfpu_deps="mips"
1960 mips32r2_deps="mips"
1961 mipsdspr1_deps="mips"
1962 mipsdspr2_deps="mips"
1963
1964 altivec_deps="ppc"
1965 ppc4xx_deps="ppc"
1966 vsx_deps="ppc"
1967
1968 cpunop_deps="i686"
1969 x86_64_select="i686"
1970 x86_64_suggest="fast_cmov"
1971
1972 amd3dnow_deps="mmx"
1973 amd3dnowext_deps="amd3dnow"
1974 i686_deps="x86"
1975 mmx_deps="x86"
1976 mmxext_deps="mmx"
1977 sse_deps="mmxext"
1978 sse2_deps="sse"
1979 sse3_deps="sse2"
1980 ssse3_deps="sse3"
1981 sse4_deps="ssse3"
1982 sse42_deps="sse4"
1983 avx_deps="sse42"
1984 xop_deps="avx"
1985 fma3_deps="avx"
1986 fma4_deps="avx"
1987 avx2_deps="avx"
1988
1989 mmx_external_deps="yasm"
1990 mmx_inline_deps="inline_asm"
1991 mmx_suggest="mmx_external mmx_inline"
1992
1993 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1994     eval dep=\$${ext}_deps
1995     eval ${ext}_external_deps='"${dep}_external"'
1996     eval ${ext}_inline_deps='"${dep}_inline"'
1997     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1998 done
1999
2000 aligned_stack_if_any="aarch64 ppc x86"
2001 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2002 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2003 fast_unaligned_if_any="aarch64 ppc x86"
2004 simd_align_16_if_any="altivec neon sse"
2005
2006 # system capabilities
2007
2008 symver_if_any="symver_asm_label symver_gnu_asm"
2009
2010 # threading support
2011 atomics_gcc_if="sync_val_compare_and_swap"
2012 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2013 atomics_win32_if="MemoryBarrier"
2014 atomics_native_if_any="$ATOMICS_LIST"
2015 w32threads_deps="atomics_native"
2016 threads_if_any="$THREADS_LIST"
2017
2018 # subsystems
2019 dct_select="rdft"
2020 error_resilience_select="me_cmp"
2021 frame_thread_encoder_deps="encoders threads"
2022 intrax8_select="error_resilience"
2023 mdct_select="fft"
2024 rdft_select="fft"
2025 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2026 mpeg_er_select="error_resilience"
2027 mpegaudio_select="mpegaudiodsp"
2028 mpegaudiodsp_select="dct"
2029 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2030 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2031
2032 # decoders / encoders
2033 aac_decoder_select="mdct sinewin"
2034 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2035 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2036 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2037 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2038 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2039 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2040 aic_decoder_select="golomb idctdsp"
2041 alac_encoder_select="lpc"
2042 als_decoder_select="bswapdsp"
2043 amrnb_decoder_select="lsp"
2044 amrwb_decoder_select="lsp"
2045 amv_decoder_select="sp5x_decoder exif"
2046 amv_encoder_select="aandcttables mpegvideoenc"
2047 ape_decoder_select="bswapdsp llauddsp"
2048 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2049 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2050 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2051 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2052 atrac1_decoder_select="mdct sinewin"
2053 atrac3_decoder_select="mdct"
2054 atrac3p_decoder_select="mdct sinewin"
2055 avrn_decoder_select="exif"
2056 bink_decoder_select="blockdsp hpeldsp"
2057 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2058 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2059 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2060 cllc_decoder_select="bswapdsp"
2061 comfortnoise_encoder_select="lpc"
2062 cook_decoder_select="audiodsp mdct sinewin"
2063 cscd_decoder_select="lzo"
2064 cscd_decoder_suggest="zlib"
2065 dca_decoder_select="mdct"
2066 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2067 dnxhd_decoder_select="blockdsp idctdsp"
2068 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2069 dvvideo_decoder_select="dvprofile idctdsp"
2070 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2071 dxa_decoder_select="zlib"
2072 eac3_decoder_select="ac3_decoder"
2073 eac3_encoder_select="ac3_encoder"
2074 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2075 eatgq_decoder_select="aandcttables"
2076 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2077 exr_decoder_select="zlib"
2078 ffv1_decoder_select="golomb rangecoder"
2079 ffv1_encoder_select="rangecoder"
2080 ffvhuff_decoder_select="huffyuv_decoder"
2081 ffvhuff_encoder_select="huffyuv_encoder"
2082 fic_decoder_select="golomb"
2083 flac_decoder_select="golomb"
2084 flac_encoder_select="bswapdsp golomb lpc"
2085 flashsv_decoder_select="zlib"
2086 flashsv_encoder_select="zlib"
2087 flashsv2_encoder_select="zlib"
2088 flashsv2_decoder_select="zlib"
2089 flv_decoder_select="h263_decoder"
2090 flv_encoder_select="h263_encoder"
2091 fourxm_decoder_select="blockdsp bswapdsp"
2092 fraps_decoder_select="bswapdsp huffman"
2093 g2m_decoder_select="blockdsp idctdsp zlib"
2094 g729_decoder_select="audiodsp"
2095 h261_decoder_select="mpeg_er mpegvideo"
2096 h261_encoder_select="aandcttables mpegvideoenc"
2097 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2098 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2099 h263i_decoder_select="h263_decoder"
2100 h263p_encoder_select="h263_encoder"
2101 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2102 h264_decoder_suggest="error_resilience"
2103 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2104 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2105 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2106 iac_decoder_select="imc_decoder"
2107 imc_decoder_select="bswapdsp fft mdct sinewin"
2108 indeo3_decoder_select="hpeldsp"
2109 interplay_video_decoder_select="hpeldsp"
2110 jpegls_decoder_select="golomb mjpeg_decoder"
2111 jpegls_encoder_select="golomb"
2112 jv_decoder_select="blockdsp"
2113 lagarith_decoder_select="huffyuvdsp"
2114 ljpeg_encoder_select="aandcttables idctdsp"
2115 loco_decoder_select="golomb"
2116 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2117 metasound_decoder_select="lsp mdct sinewin"
2118 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2119 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2120 mjpeg_encoder_select="aandcttables mpegvideoenc"
2121 mjpegb_decoder_select="mjpeg_decoder"
2122 mlp_decoder_select="mlp_parser"
2123 motionpixels_decoder_select="bswapdsp"
2124 mp1_decoder_select="mpegaudio"
2125 mp1float_decoder_select="mpegaudio"
2126 mp2_decoder_select="mpegaudio"
2127 mp2float_decoder_select="mpegaudio"
2128 mp3_decoder_select="mpegaudio"
2129 mp3adu_decoder_select="mpegaudio"
2130 mp3adufloat_decoder_select="mpegaudio"
2131 mp3float_decoder_select="mpegaudio"
2132 mp3on4_decoder_select="mpegaudio"
2133 mp3on4float_decoder_select="mpegaudio"
2134 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2135 mpc8_decoder_select="mpegaudiodsp"
2136 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2137 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2138 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2139 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2140 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2141 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2142 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2143 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2144 mpeg4_encoder_select="h263_encoder"
2145 msmpeg4v1_decoder_select="h263_decoder"
2146 msmpeg4v2_decoder_select="h263_decoder"
2147 msmpeg4v2_encoder_select="h263_encoder"
2148 msmpeg4v3_decoder_select="h263_decoder"
2149 msmpeg4v3_encoder_select="h263_encoder"
2150 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2151 mxpeg_decoder_select="mjpeg_decoder"
2152 nellymoser_decoder_select="mdct sinewin"
2153 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2154 nuv_decoder_select="idctdsp lzo"
2155 on2avc_decoder_select="mdct"
2156 opus_decoder_deps="swresample"
2157 png_decoder_select="zlib"
2158 png_encoder_select="huffyuvencdsp zlib"
2159 prores_decoder_select="blockdsp idctdsp"
2160 prores_encoder_select="fdctdsp"
2161 qcelp_decoder_select="lsp"
2162 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2163 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2164 ra_144_decoder_select="audiodsp"
2165 ralf_decoder_select="golomb"
2166 rawvideo_decoder_select="bswapdsp"
2167 rtjpeg_decoder_select="me_cmp"
2168 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2169 rv10_encoder_select="h263_encoder"
2170 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2171 rv20_encoder_select="h263_encoder"
2172 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2173 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2174 shorten_decoder_select="golomb"
2175 sipr_decoder_select="lsp"
2176 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2177 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2178 sonic_decoder_select="golomb rangecoder"
2179 sonic_encoder_select="golomb rangecoder"
2180 sonic_ls_encoder_select="golomb rangecoder"
2181 sp5x_decoder_select="mjpeg_decoder"
2182 svq1_decoder_select="hpeldsp"
2183 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2184 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2185 svq3_decoder_suggest="zlib"
2186 tak_decoder_select="audiodsp"
2187 theora_decoder_select="vp3_decoder"
2188 thp_decoder_select="mjpeg_decoder"
2189 tiff_decoder_suggest="zlib"
2190 tiff_encoder_suggest="zlib"
2191 truehd_decoder_select="mlp_parser"
2192 truemotion2_decoder_select="bswapdsp"
2193 truespeech_decoder_select="bswapdsp"
2194 tscc_decoder_select="zlib"
2195 twinvq_decoder_select="mdct lsp sinewin"
2196 utvideo_decoder_select="bswapdsp"
2197 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2198 vble_decoder_select="huffyuvdsp"
2199 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2200 vc1image_decoder_select="vc1_decoder"
2201 vorbis_decoder_select="mdct"
2202 vorbis_encoder_select="mdct"
2203 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2204 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2205 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2206 vp6a_decoder_select="vp6_decoder"
2207 vp6f_decoder_select="vp6_decoder"
2208 vp7_decoder_select="h264pred videodsp"
2209 vp8_decoder_select="h264pred videodsp"
2210 vp9_decoder_select="videodsp vp9_parser"
2211 webp_decoder_select="vp8_decoder"
2212 wmalossless_decoder_select="llauddsp"
2213 wmapro_decoder_select="mdct sinewin"
2214 wmav1_decoder_select="mdct sinewin"
2215 wmav1_encoder_select="mdct sinewin"
2216 wmav2_decoder_select="mdct sinewin"
2217 wmav2_encoder_select="mdct sinewin"
2218 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2219 wmv1_decoder_select="h263_decoder"
2220 wmv1_encoder_select="h263_encoder"
2221 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2222 wmv2_encoder_select="h263_encoder"
2223 wmv3_decoder_select="vc1_decoder"
2224 wmv3image_decoder_select="wmv3_decoder"
2225 zerocodec_decoder_select="zlib"
2226 zlib_decoder_select="zlib"
2227 zlib_encoder_select="zlib"
2228 zmbv_decoder_select="zlib"
2229 zmbv_encoder_select="zlib"
2230
2231 # hardware accelerators
2232 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2233 dxva2_deps="dxva2api_h"
2234 vaapi_deps="va_va_h"
2235 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2236 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2237 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2238 xvmc_deps="X11_extensions_XvMClib_h"
2239
2240 h263_vaapi_hwaccel_deps="vaapi"
2241 h263_vaapi_hwaccel_select="h263_decoder"
2242 h263_vdpau_hwaccel_deps="vdpau"
2243 h263_vdpau_hwaccel_select="h263_decoder"
2244 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2245 h264_dxva2_hwaccel_deps="dxva2"
2246 h264_dxva2_hwaccel_select="h264_decoder"
2247 h264_vaapi_hwaccel_deps="vaapi"
2248 h264_vaapi_hwaccel_select="h264_decoder"
2249 h264_vda_decoder_deps="vda"
2250 h264_vda_decoder_select="h264_decoder"
2251 h264_vda_hwaccel_deps="vda"
2252 h264_vda_hwaccel_select="h264_decoder"
2253 h264_vda_old_hwaccel_deps="vda"
2254 h264_vda_old_hwaccel_select="h264_decoder"
2255 h264_vdpau_decoder_deps="vdpau"
2256 h264_vdpau_decoder_select="h264_decoder"
2257 h264_vdpau_hwaccel_deps="vdpau"
2258 h264_vdpau_hwaccel_select="h264_decoder"
2259 mpeg_vdpau_decoder_deps="vdpau"
2260 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2261 mpeg_xvmc_hwaccel_deps="xvmc"
2262 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2263 mpeg1_vdpau_decoder_deps="vdpau"
2264 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2265 mpeg1_vdpau_hwaccel_deps="vdpau"
2266 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2267 mpeg1_xvmc_hwaccel_deps="xvmc"
2268 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2269 mpeg2_crystalhd_decoder_select="crystalhd"
2270 mpeg2_dxva2_hwaccel_deps="dxva2"
2271 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2272 mpeg2_vaapi_hwaccel_deps="vaapi"
2273 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2274 mpeg2_vdpau_hwaccel_deps="vdpau"
2275 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2276 mpeg2_xvmc_hwaccel_deps="xvmc"
2277 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2278 mpeg4_crystalhd_decoder_select="crystalhd"
2279 mpeg4_vaapi_hwaccel_deps="vaapi"
2280 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2281 mpeg4_vdpau_decoder_deps="vdpau"
2282 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2283 mpeg4_vdpau_hwaccel_deps="vdpau"
2284 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2285 msmpeg4_crystalhd_decoder_select="crystalhd"
2286 vc1_crystalhd_decoder_select="crystalhd"
2287 vc1_dxva2_hwaccel_deps="dxva2"
2288 vc1_dxva2_hwaccel_select="vc1_decoder"
2289 vc1_vaapi_hwaccel_deps="vaapi"
2290 vc1_vaapi_hwaccel_select="vc1_decoder"
2291 vc1_vdpau_decoder_deps="vdpau"
2292 vc1_vdpau_decoder_select="vc1_decoder"
2293 vc1_vdpau_hwaccel_deps="vdpau"
2294 vc1_vdpau_hwaccel_select="vc1_decoder"
2295 wmv3_crystalhd_decoder_select="crystalhd"
2296 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2297 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2298 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2299 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2300
2301 # parsers
2302 h264_parser_select="h264_decoder"
2303 hevc_parser_select="hevc_decoder"
2304 mpegvideo_parser_select="mpegvideo"
2305 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2306 vc1_parser_select="mpegvideo startcode vc1_decoder"
2307
2308 # external libraries
2309 libaacplus_encoder_deps="libaacplus"
2310 libcelt_decoder_deps="libcelt"
2311 libfaac_encoder_deps="libfaac"
2312 libfaac_encoder_select="audio_frame_queue"
2313 libfdk_aac_decoder_deps="libfdk_aac"
2314 libfdk_aac_encoder_deps="libfdk_aac"
2315 libfdk_aac_encoder_select="audio_frame_queue"
2316 libgme_demuxer_deps="libgme"
2317 libgsm_decoder_deps="libgsm"
2318 libgsm_encoder_deps="libgsm"
2319 libgsm_ms_decoder_deps="libgsm"
2320 libgsm_ms_encoder_deps="libgsm"
2321 libilbc_decoder_deps="libilbc"
2322 libilbc_encoder_deps="libilbc"
2323 libmodplug_demuxer_deps="libmodplug"
2324 libmp3lame_encoder_deps="libmp3lame"
2325 libmp3lame_encoder_select="audio_frame_queue"
2326 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2327 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2328 libopencore_amrnb_encoder_select="audio_frame_queue"
2329 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2330 libopenjpeg_decoder_deps="libopenjpeg"
2331 libopenjpeg_encoder_deps="libopenjpeg"
2332 libopus_decoder_deps="libopus"
2333 libopus_encoder_deps="libopus"
2334 libopus_encoder_select="audio_frame_queue"
2335 libquvi_demuxer_deps="libquvi"
2336 libschroedinger_decoder_deps="libschroedinger"
2337 libschroedinger_encoder_deps="libschroedinger"
2338 libshine_encoder_deps="libshine"
2339 libshine_encoder_select="audio_frame_queue"
2340 libspeex_decoder_deps="libspeex"
2341 libspeex_encoder_deps="libspeex"
2342 libspeex_encoder_select="audio_frame_queue"
2343 libstagefright_h264_decoder_deps="libstagefright_h264"
2344 libtheora_encoder_deps="libtheora"
2345 libtwolame_encoder_deps="libtwolame"
2346 libvo_aacenc_encoder_deps="libvo_aacenc"
2347 libvo_aacenc_encoder_select="audio_frame_queue"
2348 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2349 libvorbis_decoder_deps="libvorbis"
2350 libvorbis_encoder_deps="libvorbis"
2351 libvorbis_encoder_select="audio_frame_queue"
2352 libvpx_vp8_decoder_deps="libvpx"
2353 libvpx_vp8_encoder_deps="libvpx"
2354 libvpx_vp9_decoder_deps="libvpx"
2355 libvpx_vp9_encoder_deps="libvpx"
2356 libwavpack_encoder_deps="libwavpack"
2357 libwebp_encoder_deps="libwebp"
2358 libx264_encoder_deps="libx264"
2359 libx264rgb_encoder_deps="libx264"
2360 libx265_encoder_deps="libx265"
2361 libxavs_encoder_deps="libxavs"
2362 libxvid_encoder_deps="libxvid"
2363 libutvideo_decoder_deps="libutvideo"
2364 libutvideo_encoder_deps="libutvideo"
2365 libzvbi_teletext_decoder_deps="libzvbi"
2366
2367 # demuxers / muxers
2368 ac3_demuxer_select="ac3_parser"
2369 asf_demuxer_select="riffdec"
2370 asf_muxer_select="riffenc"
2371 asf_stream_muxer_select="asf_muxer"
2372 avi_demuxer_select="riffdec exif"
2373 avi_muxer_select="riffenc"
2374 avisynth_demuxer_deps="avisynth"
2375 avisynth_demuxer_select="riffdec"
2376 caf_demuxer_select="riffdec"
2377 dirac_demuxer_select="dirac_parser"
2378 dts_demuxer_select="dca_parser"
2379 dtshd_demuxer_select="dca_parser"
2380 dv_demuxer_select="dvprofile"
2381 dv_muxer_select="dvprofile"
2382 dxa_demuxer_select="riffdec"
2383 eac3_demuxer_select="ac3_parser"
2384 f4v_muxer_select="mov_muxer"
2385 flac_demuxer_select="flac_parser"
2386 hds_muxer_select="flv_muxer"
2387 hls_muxer_select="mpegts_muxer"
2388 image2_alias_pix_demuxer_select="image2_demuxer"
2389 image2_brender_pix_demuxer_select="image2_demuxer"
2390 ipod_muxer_select="mov_muxer"
2391 ismv_muxer_select="mov_muxer"
2392 libnut_demuxer_deps="libnut"
2393 libnut_muxer_deps="libnut"
2394 matroska_audio_muxer_select="matroska_muxer"
2395 matroska_demuxer_select="riffdec"
2396 matroska_demuxer_suggest="bzlib lzo zlib"
2397 matroska_muxer_select="riffenc"
2398 mmf_muxer_select="riffenc"
2399 mov_demuxer_select="riffdec"
2400 mov_demuxer_suggest="zlib"
2401 mov_muxer_select="riffenc rtpenc_chain"
2402 mp3_demuxer_select="mpegaudio_parser"
2403 mp4_muxer_select="mov_muxer"
2404 mpegts_muxer_select="adts_muxer latm_muxer"
2405 mpegtsraw_demuxer_select="mpegts_demuxer"
2406 mxf_d10_muxer_select="mxf_muxer"
2407 nut_muxer_select="riffenc"
2408 nuv_demuxer_select="riffdec"
2409 ogg_demuxer_select="golomb"
2410 psp_muxer_select="mov_muxer"
2411 rtp_demuxer_select="sdp_demuxer"
2412 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2413 rtsp_demuxer_select="http_protocol rtpdec"
2414 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2415 sap_demuxer_select="sdp_demuxer"
2416 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2417 sdp_demuxer_select="rtpdec"
2418 smoothstreaming_muxer_select="ismv_muxer"
2419 spdif_muxer_select="aac_parser"
2420 tak_demuxer_select="tak_parser"
2421 tg2_muxer_select="mov_muxer"
2422 tgp_muxer_select="mov_muxer"
2423 vobsub_demuxer_select="mpegps_demuxer"
2424 w64_demuxer_select="wav_demuxer"
2425 w64_muxer_select="wav_muxer"
2426 wav_demuxer_select="riffdec"
2427 wav_muxer_select="riffenc"
2428 webm_muxer_select="riffenc"
2429 wtv_demuxer_select="riffdec"
2430 wtv_muxer_select="riffenc"
2431 xmv_demuxer_select="riffdec"
2432 xwma_demuxer_select="riffdec"
2433
2434 # indevs / outdevs
2435 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2436 alsa_outdev_deps="alsa_asoundlib_h"
2437 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2438 avfoundation_indev_select="avfoundation"
2439 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2440 caca_outdev_deps="libcaca"
2441 decklink_outdev_deps="decklink pthreads"
2442 decklink_outdev_extralibs="-lstdc++"
2443 dshow_indev_deps="IBaseFilter"
2444 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2445 dv1394_indev_deps="dv1394"
2446 dv1394_indev_select="dv_demuxer"
2447 fbdev_indev_deps="linux_fb_h"
2448 fbdev_outdev_deps="linux_fb_h"
2449 gdigrab_indev_deps="CreateDIBSection"
2450 gdigrab_indev_extralibs="-lgdi32"
2451 gdigrab_indev_select="bmp_decoder"
2452 iec61883_indev_deps="libiec61883"
2453 jack_indev_deps="jack_jack_h sem_timedwait"
2454 lavfi_indev_deps="avfilter"
2455 libcdio_indev_deps="libcdio"
2456 libdc1394_indev_deps="libdc1394"
2457 libv4l2_indev_deps="libv4l2"
2458 openal_indev_deps="openal"
2459 opengl_outdev_deps="opengl"
2460 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2461 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2462 pulse_indev_deps="libpulse"
2463 pulse_outdev_deps="libpulse"
2464 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2465 qtkit_indev_select="qtkit"
2466 sdl_outdev_deps="sdl"
2467 sndio_indev_deps="sndio_h"
2468 sndio_outdev_deps="sndio_h"
2469 v4l_indev_deps="linux_videodev_h"
2470 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2471 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2472 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2473 vfwcap_indev_extralibs="-lavicap32"
2474 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2475 xv_outdev_extralibs="-lXv -lX11 -lXext"
2476 x11grab_indev_deps="x11grab"
2477
2478 # protocols
2479 bluray_protocol_deps="libbluray"
2480 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2481 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2482 ffrtmpcrypt_protocol_select="tcp_protocol"
2483 ffrtmphttp_protocol_deps="!librtmp_protocol"
2484 ffrtmphttp_protocol_select="http_protocol"
2485 ftp_protocol_select="tcp_protocol"
2486 gopher_protocol_select="network"
2487 http_protocol_select="tcp_protocol"
2488 httpproxy_protocol_select="tcp_protocol"
2489 https_protocol_select="tls_protocol"
2490 icecast_protocol_select="http_protocol"
2491 librtmp_protocol_deps="librtmp"
2492 librtmpe_protocol_deps="librtmp"
2493 librtmps_protocol_deps="librtmp"
2494 librtmpt_protocol_deps="librtmp"
2495 librtmpte_protocol_deps="librtmp"
2496 libsmbclient_protocol_deps="libsmbclient gplv3"
2497 libssh_protocol_deps="libssh"
2498 mmsh_protocol_select="http_protocol"
2499 mmst_protocol_select="network"
2500 rtmp_protocol_deps="!librtmp_protocol"
2501 rtmp_protocol_select="tcp_protocol"
2502 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2503 rtmps_protocol_deps="!librtmp_protocol"
2504 rtmps_protocol_select="tls_protocol"
2505 rtmpt_protocol_select="ffrtmphttp_protocol"
2506 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2507 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2508 rtp_protocol_select="udp_protocol"
2509 sctp_protocol_deps="struct_sctp_event_subscribe"
2510 sctp_protocol_select="network"
2511 srtp_protocol_select="rtp_protocol"
2512 tcp_protocol_select="network"
2513 tls_protocol_deps_any="openssl gnutls"
2514 tls_protocol_select="tcp_protocol"
2515 udp_protocol_select="network"
2516 unix_protocol_deps="sys_un_h"
2517 unix_protocol_select="network"
2518
2519 # filters
2520 aconvert_filter_deps="swresample"
2521 amovie_filter_deps="avcodec avformat"
2522 aresample_filter_deps="swresample"
2523 ass_filter_deps="libass"
2524 asyncts_filter_deps="avresample"
2525 atempo_filter_deps="avcodec"
2526 atempo_filter_select="rdft"
2527 azmq_filter_deps="libzmq"
2528 blackframe_filter_deps="gpl"
2529 boxblur_filter_deps="gpl"
2530 bs2b_filter_deps="libbs2b"
2531 colormatrix_filter_deps="gpl"
2532 cropdetect_filter_deps="gpl"
2533 delogo_filter_deps="gpl"
2534 deshake_filter_select="pixelutils"
2535 drawtext_filter_deps="libfreetype"
2536 ebur128_filter_deps="gpl"
2537 flite_filter_deps="libflite"
2538 frei0r_filter_deps="frei0r dlopen"
2539 frei0r_filter_extralibs='$ldl'
2540 frei0r_src_filter_deps="frei0r dlopen"
2541 frei0r_src_filter_extralibs='$ldl'
2542 geq_filter_deps="gpl"
2543 histeq_filter_deps="gpl"
2544 hqdn3d_filter_deps="gpl"
2545 interlace_filter_deps="gpl"
2546 kerndeint_filter_deps="gpl"
2547 ladspa_filter_deps="ladspa dlopen"
2548 ladspa_filter_extralibs='$ldl'
2549 mcdeint_filter_deps="avcodec gpl"
2550 movie_filter_deps="avcodec avformat"
2551 mp_filter_deps="gpl avcodec swscale inline_asm"
2552 mpdecimate_filter_deps="gpl"
2553 mpdecimate_filter_select="pixelutils"
2554 mptestsrc_filter_deps="gpl"
2555 negate_filter_deps="lut_filter"
2556 perspective_filter_deps="gpl"
2557 ocv_filter_deps="libopencv"
2558 owdenoise_filter_deps="gpl"
2559 pan_filter_deps="swresample"
2560 phase_filter_deps="gpl"
2561 pp_filter_deps="gpl postproc"
2562 pullup_filter_deps="gpl"
2563 removelogo_filter_deps="avcodec avformat swscale"
2564 resample_filter_deps="avresample"
2565 sab_filter_deps="gpl swscale"
2566 scale_filter_deps="swscale"
2567 select_filter_select="pixelutils"
2568 smartblur_filter_deps="gpl swscale"
2569 showspectrum_filter_deps="avcodec"
2570 showspectrum_filter_select="rdft"
2571 spp_filter_deps="gpl avcodec"
2572 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2573 stereo3d_filter_deps="gpl"
2574 subtitles_filter_deps="avformat avcodec libass"
2575 super2xsai_filter_deps="gpl"
2576 tinterlace_filter_deps="gpl"
2577 vidstabdetect_filter_deps="libvidstab"
2578 vidstabtransform_filter_deps="libvidstab"
2579 pixfmts_super2xsai_test_deps="super2xsai_filter"
2580 tinterlace_merge_test_deps="tinterlace_filter"
2581 tinterlace_pad_test_deps="tinterlace_filter"
2582 zmq_filter_deps="libzmq"
2583 zoompan_filter_deps="swscale"
2584
2585 # examples
2586 avio_reading="avformat avcodec avutil"
2587 avcodec_example_deps="avcodec avutil"
2588 demuxing_decoding_example_deps="avcodec avformat avutil"
2589 filter_audio_example_deps="avfilter avutil"
2590 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2591 filtering_video_example_deps="avfilter avcodec avformat avutil"
2592 metadata_example_deps="avformat avutil"
2593 muxing_example_deps="avcodec avformat avutil swscale"
2594 remuxing_example_deps="avcodec avformat avutil"
2595 resampling_audio_example_deps="avutil swresample"
2596 scaling_video_example_deps="avutil swscale"
2597 transcode_aac_example_deps="avcodec avformat swresample"
2598 transcoding_example_deps="avfilter avcodec avformat avutil"
2599
2600 # libraries, in linking order
2601 avcodec_deps="avutil"
2602 avdevice_deps="avformat avcodec avutil"
2603 avfilter_deps="avutil"
2604 avformat_deps="avcodec avutil"
2605 avresample_deps="avutil"
2606 postproc_deps="avutil gpl"
2607 swresample_deps="avutil"
2608 swscale_deps="avutil"
2609
2610 # programs
2611 ffmpeg_deps="avcodec avfilter avformat swresample"
2612 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2613                null_filter
2614                setpts_filter trim_filter"
2615 ffplay_deps="avcodec avformat swscale swresample sdl"
2616 ffplay_libs='$sdl_libs'
2617 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2618 ffprobe_deps="avcodec avformat"
2619 ffserver_deps="avformat fork sarestart"
2620 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2621
2622 # documentation
2623 podpages_deps="perl"
2624 manpages_deps="perl pod2man"
2625 htmlpages_deps="perl texi2html"
2626 txtpages_deps="perl makeinfo"
2627 doc_deps_any="manpages htmlpages podpages txtpages"
2628
2629 # default parameters
2630
2631 logfile="config.log"
2632
2633 # installation paths
2634 prefix_default="/usr/local"
2635 bindir_default='${prefix}/bin'
2636 datadir_default='${prefix}/share/ffmpeg'
2637 docdir_default='${prefix}/share/doc/ffmpeg'
2638 incdir_default='${prefix}/include'
2639 libdir_default='${prefix}/lib'
2640 mandir_default='${prefix}/share/man'
2641 shlibdir_default="$libdir_default"
2642
2643 # toolchain
2644 ar_default="ar"
2645 cc_default="gcc"
2646 cxx_default="g++"
2647 host_cc_default="gcc"
2648 cp_f="cp -f"
2649 doxygen_default="doxygen"
2650 install="install"
2651 ln_s="ln -s -f"
2652 nm_default="nm -g"
2653 objformat="elf"
2654 pkg_config_default=pkg-config
2655 ranlib_default="ranlib"
2656 strip_default="strip"
2657 yasmexe_default="yasm"
2658 windres_default="windres"
2659
2660 nogas=":"
2661
2662 # OS
2663 target_os_default=$(tolower $(uname -s))
2664 host_os=$target_os_default
2665
2666 # machine
2667 if test "$target_os_default" = aix; then
2668     arch_default=$(uname -p)
2669     strip_default="strip -X32_64"
2670 else
2671     arch_default=$(uname -m)
2672 fi
2673 cpu="generic"
2674 intrinsics="none"
2675
2676 # configurable options
2677 enable $PROGRAM_LIST
2678 enable $DOCUMENT_LIST
2679 enable $EXAMPLE_LIST
2680 enable $(filter_out avresample $LIBRARY_LIST)
2681 enable stripping
2682
2683 enable asm
2684 enable debug
2685 enable doc
2686 enable optimizations
2687 enable runtime_cpudetect
2688 enable safe_bitstream_reader
2689 enable static
2690 enable swscale_alpha
2691
2692 sws_max_filter_size_default=256
2693 set_default sws_max_filter_size
2694
2695 # Enable hwaccels by default.
2696 enable dxva2 vaapi vda vdpau xvmc
2697 enable xlib
2698
2699 # build settings
2700 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2701 LIBPREF="lib"
2702 LIBSUF=".a"
2703 FULLNAME='$(NAME)$(BUILDSUF)'
2704 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2705 SLIBPREF="lib"
2706 SLIBSUF=".so"
2707 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2708 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2709 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2710 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2711 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2712 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2713
2714 asflags_filter=echo
2715 cflags_filter=echo
2716 ldflags_filter=echo
2717
2718 AS_C='-c'
2719 AS_O='-o $@'
2720 CC_C='-c'
2721 CC_E='-E -o $@'
2722 CC_O='-o $@'
2723 CXX_C='-c'
2724 CXX_O='-o $@'
2725 LD_O='-o $@'
2726 LD_LIB='-l%'
2727 LD_PATH='-L'
2728 HOSTCC_C='-c'
2729 HOSTCC_E='-E -o $@'
2730 HOSTCC_O='-o $@'
2731 HOSTLD_O='-o $@'
2732
2733 host_libs='-lm'
2734 host_cflags_filter=echo
2735 host_ldflags_filter=echo
2736
2737 target_path='$(CURDIR)'
2738
2739 # since the object filename is not given with the -MM flag, the compiler
2740 # is only able to print the basename, and we must add the path ourselves
2741 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2742 DEPFLAGS='-MM'
2743
2744 # find source path
2745 if test -f configure; then
2746     source_path=.
2747 else
2748     source_path=$(cd $(dirname "$0"); pwd)
2749     echo "$source_path" | grep -q '[[:blank:]]' &&
2750         die "Out of tree builds are impossible with whitespace in source path."
2751     test -e "$source_path/config.h" &&
2752         die "Out of tree builds are impossible with config.h in source dir."
2753 fi
2754
2755 for v in "$@"; do
2756     r=${v#*=}
2757     l=${v%"$r"}
2758     r=$(sh_quote "$r")
2759     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2760 done
2761
2762 find_things(){
2763     thing=$1
2764     pattern=$2
2765     file=$source_path/$3
2766     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2767 }
2768
2769 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2770 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2771 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2772 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2773 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2774 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2775 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2776 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2777 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2778 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2779 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2780
2781 ALL_COMPONENTS="
2782     $BSF_LIST
2783     $DECODER_LIST
2784     $DEMUXER_LIST
2785     $ENCODER_LIST
2786     $FILTER_LIST
2787     $HWACCEL_LIST
2788     $INDEV_LIST
2789     $MUXER_LIST
2790     $OUTDEV_LIST
2791     $PARSER_LIST
2792     $PROTOCOL_LIST
2793 "
2794
2795 for n in $COMPONENT_LIST; do
2796     v=$(toupper ${n%s})_LIST
2797     eval enable \$$v
2798     eval ${n}_if_any="\$$v"
2799 done
2800
2801 enable $ARCH_EXT_LIST
2802
2803 die_unknown(){
2804     echo "Unknown option \"$1\"."
2805     echo "See $0 --help for available options."
2806     exit 1
2807 }
2808
2809 print_3_columns() {
2810     cat | tr ' ' '\n' | sort | pr -r -3 -t
2811 }
2812
2813 show_list() {
2814     suffix=_$1
2815     shift
2816     echo $* | sed s/$suffix//g | print_3_columns
2817     exit 0
2818 }
2819
2820 rand_list(){
2821     IFS=', '
2822     set -- $*
2823     unset IFS
2824     for thing; do
2825         comp=${thing%:*}
2826         prob=${thing#$comp}
2827         prob=${prob#:}
2828         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2829         echo "prob ${prob:-0.5}"
2830         printf '%s\n' $comp
2831     done
2832 }
2833
2834 do_random(){
2835     action=$1
2836     shift
2837     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2838     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2839 }
2840
2841 for opt do
2842     optval="${opt#*=}"
2843     case "$opt" in
2844         --extra-ldflags=*)
2845             add_ldflags $optval
2846         ;;
2847         --extra-ldexeflags=*)
2848             add_ldexeflags $optval
2849         ;;
2850         --extra-libs=*)
2851             add_extralibs $optval
2852         ;;
2853         --disable-devices)
2854             disable $INDEV_LIST $OUTDEV_LIST
2855         ;;
2856         --enable-debug=*)
2857             debuglevel="$optval"
2858         ;;
2859         --disable-programs)
2860             disable $PROGRAM_LIST
2861         ;;
2862         --disable-everything)
2863             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2864         ;;
2865         --disable-all)
2866             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2867             disable $LIBRARY_LIST $PROGRAM_LIST doc
2868         ;;
2869         --enable-random|--disable-random)
2870             action=${opt%%-random}
2871             do_random ${action#--} $COMPONENT_LIST
2872         ;;
2873         --enable-random=*|--disable-random=*)
2874             action=${opt%%-random=*}
2875             do_random ${action#--} $optval
2876         ;;
2877         --enable-*=*|--disable-*=*)
2878             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2879             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2880             eval list=\$$(toupper $thing)_LIST
2881             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2882             list=$(filter "$name" $list)
2883             [ "$list" = "" ] && warn "Option $opt did not match anything"
2884             $action $list
2885         ;;
2886         --enable-?*|--disable-?*)
2887             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2888             if is_in $option $COMPONENT_LIST; then
2889                 test $action = disable && action=unset
2890                 eval $action \$$(toupper ${option%s})_LIST
2891             elif is_in $option $CMDLINE_SELECT; then
2892                 $action $option
2893             else
2894                 die_unknown $opt
2895             fi
2896         ;;
2897         --list-*)
2898             NAME="${opt#--list-}"
2899             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2900             NAME=${NAME%s}
2901             eval show_list $NAME \$$(toupper $NAME)_LIST
2902         ;;
2903         --help|-h) show_help
2904         ;;
2905         --fatal-warnings) enable fatal_warnings
2906         ;;
2907         *)
2908             optname="${opt%%=*}"
2909             optname="${optname#--}"
2910             optname=$(echo "$optname" | sed 's/-/_/g')
2911             if is_in $optname $CMDLINE_SET; then
2912                 eval $optname='$optval'
2913             elif is_in $optname $CMDLINE_APPEND; then
2914                 append $optname "$optval"
2915             else
2916                 die_unknown $opt
2917             fi
2918         ;;
2919     esac
2920 done
2921
2922 disabled logging && logfile=/dev/null
2923
2924 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2925 set >> $logfile
2926
2927 test -n "$cross_prefix" && enable cross_compile
2928
2929 if enabled cross_compile; then
2930     test -n "$arch" && test -n "$target_os" ||
2931         die "Must specify target arch and OS when cross-compiling"
2932 fi
2933
2934 ar_default="${cross_prefix}${ar_default}"
2935 cc_default="${cross_prefix}${cc_default}"
2936 cxx_default="${cross_prefix}${cxx_default}"
2937 nm_default="${cross_prefix}${nm_default}"
2938 pkg_config_default="${cross_prefix}${pkg_config_default}"
2939 ranlib_default="${cross_prefix}${ranlib_default}"
2940 strip_default="${cross_prefix}${strip_default}"
2941 windres_default="${cross_prefix}${windres_default}"
2942
2943 sysinclude_default="${sysroot}/usr/include"
2944
2945 test -n "$valgrind" && toolchain="valgrind-memcheck"
2946
2947 case "$toolchain" in
2948     clang-asan)
2949         cc_default="clang"
2950         add_cflags  -fsanitize=address
2951         add_ldflags -fsanitize=address
2952     ;;
2953     clang-tsan)
2954         cc_default="clang"
2955         add_cflags  -fsanitize=thread -pie
2956         add_ldflags -fsanitize=thread -pie
2957     ;;
2958     clang-usan)
2959         cc_default="clang"
2960         add_cflags  -fsanitize=undefined
2961         add_ldflags -fsanitize=undefined
2962     ;;
2963     gcc-asan)
2964         cc_default="gcc"
2965         add_cflags  -fsanitize=address
2966         add_ldflags -fsanitize=address
2967     ;;
2968     gcc-tsan)
2969         cc_default="gcc"
2970         add_cflags  -fsanitize=thread -pie -fPIC
2971         add_ldflags -fsanitize=thread -pie -fPIC
2972     ;;
2973     gcc-usan)
2974         cc_default="gcc"
2975         add_cflags  -fsanitize=undefined
2976         add_ldflags -fsanitize=undefined
2977     ;;
2978     valgrind-massif)
2979         target_exec_default=${valgrind:-"valgrind"}
2980         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
2981     ;;
2982     valgrind-memcheck)
2983         target_exec_default=${valgrind:-"valgrind"}
2984         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2985     ;;
2986     msvc)
2987         # Check whether the current MSVC version needs the C99 converter.
2988         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2989         # support enough of C99 to build ffmpeg. Default to the new
2990         # behaviour if the regexp was unable to match anything, since this
2991         # successfully parses the version number of existing supported
2992         # versions that require the converter (MSVC 2010 and 2012).
2993         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2994         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2995             cc_default="cl"
2996         else
2997             cc_default="c99wrap cl"
2998         fi
2999         ld_default="link"
3000         nm_default="dumpbin -symbols"
3001         ar_default="lib"
3002         target_os_default="win32"
3003         # Use a relative path for TMPDIR. This makes sure all the
3004         # ffconf temp files are written with a relative path, avoiding
3005         # issues with msys/win32 path conversion for MSVC parameters
3006         # such as -Fo<file> or -out:<file>.
3007         TMPDIR=.
3008     ;;
3009     icl)
3010         cc_default="icl"
3011         ld_default="xilink"
3012         nm_default="dumpbin -symbols"
3013         ar_default="xilib"
3014         target_os_default="win32"
3015         TMPDIR=.
3016     ;;
3017     gcov)
3018         add_cflags  -fprofile-arcs -ftest-coverage
3019         add_ldflags -fprofile-arcs -ftest-coverage
3020     ;;
3021     hardened)
3022         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3023         add_ldflags -Wl,-z,relro -Wl,-z,now
3024     ;;
3025     ?*)
3026         die "Unknown toolchain $toolchain"
3027     ;;
3028 esac
3029
3030 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3031     target_exec target_os yasmexe
3032 enabled cross_compile || host_cc_default=$cc
3033 set_default host_cc
3034
3035 if ! $pkg_config --version >/dev/null 2>&1; then
3036     warn "$pkg_config not found, library detection may fail."
3037     pkg_config=false
3038 fi
3039
3040 if test $doxygen != $doxygen_default && \
3041   ! $doxygen --version >/dev/null 2>&1; then
3042     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3043 fi
3044
3045 exesuf() {
3046     case $1 in
3047         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3048     esac
3049 }
3050
3051 EXESUF=$(exesuf $target_os)
3052 HOSTEXESUF=$(exesuf $host_os)
3053
3054 # set temporary file name
3055 : ${TMPDIR:=$TEMPDIR}
3056 : ${TMPDIR:=$TMP}
3057 : ${TMPDIR:=/tmp}
3058
3059 if [ -n "$tempprefix" ] ; then
3060     mktemp(){
3061         echo $tempprefix.${HOSTNAME}.${UID}
3062     }
3063 elif ! check_cmd mktemp -u XXXXXX; then
3064     # simple replacement for missing mktemp
3065     # NOT SAFE FOR GENERAL USE
3066     mktemp(){
3067         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3068     }
3069 fi
3070
3071 tmpfile(){
3072     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3073         (set -C; exec > $tmp) 2>/dev/null ||
3074         die "Unable to create temporary file in $TMPDIR."
3075     append TMPFILES $tmp
3076     eval $1=$tmp
3077 }
3078
3079 trap 'rm -f -- $TMPFILES' EXIT
3080
3081 tmpfile TMPASM .asm
3082 tmpfile TMPC   .c
3083 tmpfile TMPCPP .cpp
3084 tmpfile TMPE   $EXESUF
3085 tmpfile TMPH   .h
3086 tmpfile TMPM   .m
3087 tmpfile TMPO   .o
3088 tmpfile TMPS   .S
3089 tmpfile TMPSH  .sh
3090 tmpfile TMPV   .ver
3091
3092 unset -f mktemp
3093
3094 chmod +x $TMPE
3095
3096 # make sure we can execute files in $TMPDIR
3097 cat > $TMPSH 2>> $logfile <<EOF
3098 #! /bin/sh
3099 EOF
3100 chmod +x $TMPSH >> $logfile 2>&1
3101 if ! $TMPSH >> $logfile 2>&1; then
3102     cat <<EOF
3103 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3104 variable to another directory and make sure that it is not mounted noexec.
3105 EOF
3106     die "Sanity test failed."
3107 fi
3108
3109 ccc_flags(){
3110     for flag; do
3111         case $flag in
3112             -std=c99)           echo -c99                       ;;
3113             -mcpu=*)            echo -arch ${flag#*=}           ;;
3114             -mieee)             echo -ieee                      ;;
3115             -O*|-fast)          echo $flag                      ;;
3116             -fno-math-errno)    echo -assume nomath_errno       ;;
3117             -g)                 echo -g3                        ;;
3118             -Wall)              echo -msg_enable level2         ;;
3119             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3120             -Wl,*)              echo $flag                      ;;
3121             -f*|-W*)                                            ;;
3122             *)                  echo $flag                      ;;
3123         esac
3124    done
3125 }
3126
3127 cparser_flags(){
3128     for flag; do
3129         case $flag in
3130             -Wno-switch)             echo -Wno-switch-enum ;;
3131             -Wno-format-zero-length) ;;
3132             -Wdisabled-optimization) ;;
3133             -Wno-pointer-sign)       echo -Wno-other ;;
3134             *)                       echo $flag ;;
3135         esac
3136     done
3137 }
3138
3139 msvc_common_flags(){
3140     for flag; do
3141         case $flag in
3142             # In addition to specifying certain flags under the compiler
3143             # specific filters, they must be specified here as well or else the
3144             # generic catch all at the bottom will print the original flag.
3145             -Wall)                ;;
3146             -std=c99)             ;;
3147             # Common flags
3148             -fomit-frame-pointer) ;;
3149             -g)                   echo -Z7 ;;
3150             -fno-math-errno)      ;;
3151             -fno-common)          ;;
3152             -fno-signed-zeros)    ;;
3153             -fPIC)                ;;
3154             -mthumb)              ;;
3155             -march=*)             ;;
3156             -lz)                  echo zlib.lib ;;
3157             -lavifil32)           echo vfw32.lib ;;
3158             -lavicap32)           echo vfw32.lib user32.lib ;;
3159             -l*)                  echo ${flag#-l}.lib ;;
3160             *)                    echo $flag ;;
3161         esac
3162     done
3163 }
3164
3165 msvc_flags(){
3166     msvc_common_flags "$@"
3167     for flag; do
3168         case $flag in
3169             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3170                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3171                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3172                                        -wd4554 \
3173                                        -wd4273 ;;
3174         esac
3175     done
3176 }
3177
3178 icl_flags(){
3179     msvc_common_flags "$@"
3180     for flag; do
3181         case $flag in
3182             # Despite what Intel's documentation says -Wall, which is supported
3183             # on Windows, does enable remarks so disable them here.
3184             -Wall)                echo $flag -Qdiag-disable:remark ;;
3185             -std=c99)             echo -Qstd=c99 ;;
3186             -flto)                echo -ipo ;;
3187         esac
3188     done
3189 }
3190
3191 icc_flags(){
3192     for flag; do
3193         case $flag in
3194             -flto)                echo -ipo ;;
3195             *)                    echo $flag ;;
3196         esac
3197     done
3198 }
3199
3200 pgi_flags(){
3201     for flag; do
3202         case $flag in
3203             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3204             -fomit-frame-pointer) echo -Mnoframe ;;
3205             -g)                   echo -gopt ;;
3206             *)                    echo $flag ;;
3207         esac
3208     done
3209 }
3210
3211 suncc_flags(){
3212     for flag; do
3213         case $flag in
3214             -march=*|-mcpu=*)
3215                 case "${flag#*=}" in
3216                     native)                   echo -xtarget=native       ;;
3217                     v9|niagara)               echo -xarch=sparc          ;;
3218                     ultrasparc)               echo -xarch=sparcvis       ;;
3219                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3220                     i586|pentium)             echo -xchip=pentium        ;;
3221                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3222                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3223                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3224                     pentium4*)          echo -xtarget=pentium4           ;;
3225                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3226                     *-sse3)             echo -xarch=sse3                 ;;
3227                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3228                     bonnell)                   echo -xarch=ssse3         ;;
3229                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3230                     westmere)                  echo -xtarget=westmere    ;;
3231                     silvermont)                echo -xarch=sse4_2        ;;
3232                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3233                     core-avx*|ivybridge|haswell|broadwell)
3234                                                echo -xarch=avx           ;;
3235                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3236                     btver1)                    echo -xarch=amdsse4a      ;;
3237                     btver2|bdver*)             echo -xarch=avx           ;;
3238                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3239                     k8|opteron|athlon64|athlon-fx)
3240                                                echo -xarch=sse2a         ;;
3241                     athlon*)                   echo -xarch=pentium_proa  ;;
3242                 esac
3243                 ;;
3244             -std=c99)             echo -xc99              ;;
3245             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3246             -fPIC)                echo -KPIC -xcode=pic32 ;;
3247             -W*,*)                echo $flag              ;;
3248             -f*-*|-W*|-mimpure-text)                      ;;
3249             -shared)              echo -G                 ;;
3250             *)                    echo $flag              ;;
3251         esac
3252     done
3253 }
3254
3255 tms470_flags(){
3256     for flag; do
3257         case $flag in
3258             -march=*|-mcpu=*)
3259                 case "${flag#*=}" in
3260                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3261                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3262                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3263                     armv6*|arm11*)          echo -mv=6   ;;
3264                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3265                                             echo -mv=5e  ;;
3266                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3267                 esac
3268                 ;;
3269             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3270             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3271             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3272             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3273             -msoft-float)   echo --float_support=vfplib       ;;
3274             -O[0-3]|-mf=*)  echo $flag                        ;;
3275             -g)             echo -g -mn                       ;;
3276             -pds=*)         echo $flag                        ;;
3277             -D*|-I*)        echo $flag                        ;;
3278             --gcc|--abi=*)  echo $flag                        ;;
3279             -me)            echo $flag                        ;;
3280         esac
3281     done
3282 }
3283
3284 probe_cc(){
3285     pfx=$1
3286     _cc=$2
3287
3288     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3289     unset _ld_o _ldflags _ld_lib _ld_path
3290     unset _depflags _DEPCMD _DEPFLAGS
3291     _flags_filter=echo
3292
3293     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3294         true # no-op to avoid reading stdin in following checks
3295     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3296         _type=llvm_gcc
3297         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3298         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3299         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3300         _cflags_speed='-O3'
3301         _cflags_size='-Os'
3302     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3303         _type=gcc
3304         gcc_version=$($_cc --version | head -n1)
3305         gcc_basever=$($_cc -dumpversion)
3306         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3307         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3308         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3309         if ! $_cc -dumpversion | grep -q '^2\.'; then
3310             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3311         fi
3312         _cflags_speed='-O3'
3313         _cflags_size='-Os'
3314     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3315         _type=icc
3316         _ident=$($_cc --version | head -n1)
3317         _depflags='-MMD'
3318         _cflags_speed='-O3'
3319         _cflags_size='-Os'
3320         _cflags_noopt='-O1'
3321         _flags_filter=icc_flags
3322     elif $_cc -v 2>&1 | grep -q xlc; then
3323         _type=xlc
3324         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3325         _cflags_speed='-O5'
3326         _cflags_size='-O5 -qcompact'
3327     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3328         _type=ccc
3329         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3330         _DEPFLAGS='-M'
3331         _cflags_speed='-fast'
3332         _cflags_size='-O1'
3333         _flags_filter=ccc_flags
3334     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3335         test -d "$sysroot" || die "No valid sysroot specified."
3336         _type=armcc
3337         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3338         armcc_conf="$PWD/armcc.conf"
3339         $_cc --arm_linux_configure                 \
3340              --arm_linux_config_file="$armcc_conf" \
3341              --configure_sysroot="$sysroot"        \
3342              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3343              die "Error creating armcc configuration file."
3344         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3345         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3346         as_default="${cross_prefix}gcc"
3347         _depflags='-MMD'
3348         _cflags_speed='-O3'
3349         _cflags_size='-Os'
3350     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3351         _type=tms470
3352         _ident=$($_cc -version | head -n1 | tr -s ' ')
3353         _flags='--gcc --abi=eabi -me'
3354         _cc_e='-ppl -fe=$@'
3355         _cc_o='-fe=$@'
3356         _depflags='-ppa -ppd=$(@:.o=.d)'
3357         _cflags_speed='-O3 -mf=5'
3358         _cflags_size='-O3 -mf=2'
3359         _flags_filter=tms470_flags
3360     elif $_cc -v 2>&1 | grep -q clang; then
3361         _type=clang
3362         _ident=$($_cc --version | head -n1)
3363         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3364         _cflags_speed='-O3'
3365         _cflags_size='-Os'
3366     elif $_cc -V 2>&1 | grep -q Sun; then
3367         _type=suncc
3368         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3369         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3370         _DEPFLAGS='-xM1 -xc99'
3371         _ldflags='-std=c99'
3372         _cflags_speed='-O5'
3373         _cflags_size='-O5 -xspace'
3374         _flags_filter=suncc_flags
3375     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3376         _type=pathscale
3377         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3378         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3379         _cflags_speed='-O2'
3380         _cflags_size='-Os'
3381         _flags_filter='filter_out -Wdisabled-optimization'
3382     elif $_cc -v 2>&1 | grep -q Open64; then
3383         _type=open64
3384         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3385         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3386         _cflags_speed='-O2'
3387         _cflags_size='-Os'
3388         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3389     elif $_cc -V 2>&1 | grep -q Portland; then
3390         _type=pgi
3391         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3392         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3393         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3394         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3395         _cflags_noopt="-O"
3396         _flags_filter=pgi_flags
3397     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3398         _type=armasm
3399         _ident=$($_cc | head -n1)
3400         # 4509: "This form of conditional instruction is deprecated"
3401         _flags="-nologo -ignore 4509"
3402     elif $_cc 2>&1 | grep -q Microsoft; then
3403         _type=msvc
3404         _ident=$($cc 2>&1 | head -n1)
3405         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3406         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3407         _cflags_speed="-O2"
3408         _cflags_size="-O1"
3409         if $_cc 2>&1 | grep -q Linker; then
3410             _ld_o='-out:$@'
3411         else
3412             _ld_o='-Fe$@'
3413         fi
3414         _cc_o='-Fo$@'
3415         _cc_e='-P -Fi$@'
3416         _flags_filter=msvc_flags
3417         _ld_lib='lib%.a'
3418         _ld_path='-libpath:'
3419         _flags='-nologo'
3420         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3421         if [ $pfx = hostcc ]; then
3422             append _cflags -Dsnprintf=_snprintf
3423         fi
3424         disable stripping
3425     elif $_cc 2>&1 | grep -q Intel; then
3426         _type=icl
3427         _ident=$($cc 2>&1 | head -n1)
3428         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3429         # Not only is O3 broken on 13.x+ but it is slower on all previous
3430         # versions (tested) as well.
3431         _cflags_speed="-O2"
3432         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3433         if $_cc 2>&1 | grep -q Linker; then
3434             _ld_o='-out:$@'
3435         else
3436             _ld_o='-Fe$@'
3437         fi
3438         _cc_o='-Fo$@'
3439         _cc_e='-P'
3440         _flags_filter=icl_flags
3441         _ld_lib='lib%.a'
3442         _ld_path='-libpath:'
3443         # -Qdiag-error to make icl error when seeing certain unknown arguments
3444         _flags='-nologo -Qdiag-error:4044,10157'
3445         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3446         # with MSVC which enables it by default.
3447         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3448         if [ $pfx = hostcc ]; then
3449             append _cflags -Dsnprintf=_snprintf
3450         fi
3451     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3452         _type=cparser
3453         _ident=$($_cc --version | head -n1)
3454         _depflags='-MMD'
3455         _cflags_speed='-O4'
3456         _cflags_size='-O2'
3457         _flags_filter=cparser_flags
3458     fi
3459
3460     eval ${pfx}_type=\$_type
3461     eval ${pfx}_ident=\$_ident
3462 }
3463
3464 set_ccvars(){
3465     eval ${1}_C=\${_cc_c-\${${1}_C}}
3466     eval ${1}_E=\${_cc_e-\${${1}_E}}
3467     eval ${1}_O=\${_cc_o-\${${1}_O}}
3468
3469     if [ -n "$_depflags" ]; then
3470         eval ${1}_DEPFLAGS=\$_depflags
3471     else
3472         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3473         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3474         eval DEP${1}FLAGS=\$_flags
3475     fi
3476 }
3477
3478 probe_cc cc "$cc"
3479 cflags_filter=$_flags_filter
3480 cflags_speed=$_cflags_speed
3481 cflags_size=$_cflags_size
3482 cflags_noopt=$_cflags_noopt
3483 add_cflags $_flags $_cflags
3484 cc_ldflags=$_ldflags
3485 set_ccvars CC
3486
3487 probe_cc hostcc "$host_cc"
3488 host_cflags_filter=$_flags_filter
3489 add_host_cflags  $_flags $_cflags
3490 set_ccvars HOSTCC
3491
3492 test -n "$cc_type" && enable $cc_type ||
3493     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3494
3495 : ${as_default:=$cc}
3496 : ${dep_cc_default:=$cc}
3497 : ${ld_default:=$cc}
3498 : ${host_ld_default:=$host_cc}
3499 set_default ar as dep_cc ld host_ld windres
3500
3501 probe_cc as "$as"
3502 asflags_filter=$_flags_filter
3503 add_asflags $_flags $_cflags
3504 set_ccvars AS
3505
3506 probe_cc ld "$ld"
3507 ldflags_filter=$_flags_filter
3508 add_ldflags $_flags $_ldflags
3509 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3510 LD_O=${_ld_o-$LD_O}
3511 LD_LIB=${_ld_lib-$LD_LIB}
3512 LD_PATH=${_ld_path-$LD_PATH}
3513
3514 probe_cc hostld "$host_ld"
3515 host_ldflags_filter=$_flags_filter
3516 add_host_ldflags $_flags $_ldflags
3517 HOSTLD_O=${_ld_o-$HOSTLD_O}
3518
3519 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3520     probe_cc depcc "$dep_cc"
3521     CCDEP=${_DEPCMD:-$DEPCMD}
3522     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3523     DEPCCFLAGS=$_flags
3524 fi
3525
3526 if $ar 2>&1 | grep -q Microsoft; then
3527     arflags="-nologo"
3528     ar_o='-out:$@'
3529 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3530     arflags="rq"
3531     ar_o='$@'
3532 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3533     arflags='-Xany -r -c'
3534     ar_o='$@'
3535 else
3536     arflags="rc"
3537     ar_o='$@'
3538 fi
3539
3540 add_cflags $extra_cflags
3541 add_cxxflags $extra_cxxflags
3542 add_asflags $extra_cflags
3543
3544 if test -n "$sysroot"; then
3545     case "$cc_type" in
3546         gcc|llvm_gcc|clang)
3547             add_cppflags --sysroot="$sysroot"
3548             add_ldflags --sysroot="$sysroot"
3549 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3550             add_cppflags -isysroot "$sysroot"
3551             add_ldflags -isysroot "$sysroot"
3552         ;;
3553         tms470)
3554             add_cppflags -I"$sysinclude"
3555             add_ldflags  --sysroot="$sysroot"
3556         ;;
3557     esac
3558 fi
3559
3560 if test "$cpu" = host; then
3561     enabled cross_compile &&
3562         die "--cpu=host makes no sense when cross-compiling."
3563
3564     case "$cc_type" in
3565         gcc|llvm_gcc)
3566             check_native(){
3567                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3568                 sed -n "/cc1.*$1=/{
3569                             s/.*$1=\\([^ ]*\\).*/\\1/
3570                             p
3571                             q
3572                         }" $TMPE
3573             }
3574             cpu=$(check_native -march || check_native -mcpu)
3575         ;;
3576     esac
3577
3578     test "${cpu:-host}" = host &&
3579         die "--cpu=host not supported with compiler $cc"
3580 fi
3581
3582 # Deal with common $arch aliases
3583 case "$arch" in
3584     aarch64|arm64)
3585         arch="aarch64"
3586     ;;
3587     arm*|iPad*|iPhone*)
3588         arch="arm"
3589     ;;
3590     mips*|IP*)
3591         arch="mips"
3592     ;;
3593     parisc*|hppa*)
3594         arch="parisc"
3595     ;;
3596     "Power Macintosh"|ppc*|powerpc*)
3597         arch="ppc"
3598     ;;
3599     s390|s390x)
3600         arch="s390"
3601     ;;
3602     sh4|sh)
3603         arch="sh4"
3604     ;;
3605     sun4u|sparc*)
3606         arch="sparc"
3607     ;;
3608     tilegx|tile-gx)
3609         arch="tilegx"
3610     ;;
3611     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3612         arch="x86"
3613     ;;
3614 esac
3615
3616 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3617 enable $arch
3618
3619 # Add processor-specific flags
3620 if enabled aarch64; then
3621
3622     case $cpu in
3623         armv*)
3624             cpuflags="-march=$cpu"
3625         ;;
3626         *)
3627             cpuflags="-mcpu=$cpu"
3628         ;;
3629     esac
3630
3631 elif enabled alpha; then
3632
3633     cpuflags="-mcpu=$cpu"
3634
3635 elif enabled arm; then
3636
3637     check_arm_arch() {
3638         check_cpp_condition stddef.h \
3639             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3640             $cpuflags
3641     }
3642
3643     probe_arm_arch() {
3644         if   check_arm_arch 4;        then echo armv4;
3645         elif check_arm_arch 4T;       then echo armv4t;
3646         elif check_arm_arch 5;        then echo armv5;
3647         elif check_arm_arch 5E;       then echo armv5e;
3648         elif check_arm_arch 5T;       then echo armv5t;
3649         elif check_arm_arch 5TE;      then echo armv5te;
3650         elif check_arm_arch 5TEJ;     then echo armv5te;
3651         elif check_arm_arch 6;        then echo armv6;
3652         elif check_arm_arch 6J;       then echo armv6j;
3653         elif check_arm_arch 6K;       then echo armv6k;
3654         elif check_arm_arch 6Z;       then echo armv6z;
3655         elif check_arm_arch 6ZK;      then echo armv6zk;
3656         elif check_arm_arch 6T2;      then echo armv6t2;
3657         elif check_arm_arch 7;        then echo armv7;
3658         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3659         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3660         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3661         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3662         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3663         fi
3664     }
3665
3666     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3667
3668     case $cpu in
3669         armv*)
3670             cpuflags="-march=$cpu"
3671             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3672         ;;
3673         *)
3674             cpuflags="-mcpu=$cpu"
3675             case $cpu in
3676                 cortex-a*)                               subarch=armv7a  ;;
3677                 cortex-r*)                               subarch=armv7r  ;;
3678                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3679                 arm11*)                                  subarch=armv6   ;;
3680                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3681                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3682                 *)                             subarch=$(probe_arm_arch) ;;
3683             esac
3684         ;;
3685     esac
3686
3687     case "$subarch" in
3688         armv5t*)    enable fast_clz                ;;
3689         armv[6-8]*)
3690             enable fast_clz
3691             disabled fast_unaligned || enable fast_unaligned
3692             ;;
3693     esac
3694
3695 elif enabled avr32; then
3696
3697     case $cpu in
3698         ap7[02]0[0-2])
3699             subarch="avr32_ap"
3700             cpuflags="-mpart=$cpu"
3701         ;;
3702         ap)
3703             subarch="avr32_ap"
3704             cpuflags="-march=$cpu"
3705         ;;
3706         uc3[ab]*)
3707             subarch="avr32_uc"
3708             cpuflags="-mcpu=$cpu"
3709         ;;
3710         uc)
3711             subarch="avr32_uc"
3712             cpuflags="-march=$cpu"
3713         ;;
3714     esac
3715
3716 elif enabled bfin; then
3717
3718     cpuflags="-mcpu=$cpu"
3719
3720 elif enabled mips; then
3721
3722     cpuflags="-march=$cpu"
3723
3724     case $cpu in
3725         24kc)
3726             disable mipsfpu
3727             disable mipsdspr1
3728             disable mipsdspr2
3729         ;;
3730         24kf*)
3731             disable mipsdspr1
3732             disable mipsdspr2
3733         ;;
3734         24kec|34kc|1004kc)
3735             disable mipsfpu
3736             disable mipsdspr2
3737         ;;
3738         24kef*|34kf*|1004kf*)
3739             disable mipsdspr2
3740         ;;
3741         74kc)
3742             disable mipsfpu
3743         ;;
3744     esac
3745
3746 elif enabled ppc; then
3747
3748     disable ldbrx
3749     disable vsx
3750
3751     case $(tolower $cpu) in
3752         601|ppc601|powerpc601)
3753             cpuflags="-mcpu=601"
3754             disable altivec
3755         ;;
3756         603*|ppc603*|powerpc603*)
3757             cpuflags="-mcpu=603"
3758             disable altivec
3759         ;;
3760         604*|ppc604*|powerpc604*)
3761             cpuflags="-mcpu=604"
3762             disable altivec
3763         ;;
3764         g3|75*|ppc75*|powerpc75*)
3765             cpuflags="-mcpu=750"
3766             disable altivec
3767         ;;
3768         g4|745*|ppc745*|powerpc745*)
3769             cpuflags="-mcpu=7450"
3770         ;;
3771         74*|ppc74*|powerpc74*)
3772             cpuflags="-mcpu=7400"
3773         ;;
3774         g5|970|ppc970|powerpc970)
3775             cpuflags="-mcpu=970"
3776         ;;
3777         power[3-8]*)
3778             cpuflags="-mcpu=$cpu"
3779         ;;
3780         cell)
3781             cpuflags="-mcpu=cell"
3782             enable ldbrx
3783         ;;
3784         e500mc)
3785             cpuflags="-mcpu=e500mc"
3786             disable altivec
3787         ;;
3788         e500v2)
3789             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3790             disable altivec
3791             disable dcbzl
3792         ;;
3793         e500)
3794             cpuflags="-mcpu=8540 -mhard-float"
3795             disable altivec
3796             disable dcbzl
3797         ;;
3798     esac
3799
3800 elif enabled sparc; then
3801
3802     case $cpu in
3803         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3804             cpuflags="-mcpu=$cpu"
3805         ;;
3806         ultrasparc*|niagara[234])
3807             cpuflags="-mcpu=$cpu"
3808         ;;
3809     esac
3810
3811 elif enabled x86; then
3812
3813     case $cpu in
3814         i[345]86|pentium)
3815             cpuflags="-march=$cpu"
3816             disable mmx
3817         ;;
3818         # targets that do NOT support nopl and conditional mov (cmov)
3819         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3820             cpuflags="-march=$cpu"
3821             disable i686
3822         ;;
3823         # targets that do support nopl and conditional mov (cmov)
3824         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3825         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3826             cpuflags="-march=$cpu"
3827             enable i686
3828             enable fast_cmov
3829         ;;
3830         # targets that do support conditional mov but on which it's slow
3831         pentium4|pentium4m|prescott|nocona)
3832             cpuflags="-march=$cpu"
3833             enable i686
3834             disable fast_cmov
3835         ;;
3836     esac
3837
3838 fi
3839
3840 if [ "$cpu" != generic ]; then
3841     add_cflags  $cpuflags
3842     add_asflags $cpuflags
3843 fi
3844
3845 # compiler sanity check
3846 check_exec <<EOF
3847 int main(void){ return 0; }
3848 EOF
3849 if test "$?" != 0; then
3850     echo "$cc is unable to create an executable file."
3851     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3852         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3853         echo "Only do this if you know what cross compiling means."
3854     fi
3855     die "C compiler test failed."
3856 fi
3857
3858 add_cppflags -D_ISOC99_SOURCE
3859 add_cxxflags -D__STDC_CONSTANT_MACROS
3860 check_cflags -std=c99
3861 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3862 #include <stdlib.h>
3863 EOF
3864 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3865 #include <stdlib.h>
3866 EOF
3867
3868 add_host_cppflags -D_ISOC99_SOURCE
3869 check_host_cflags -std=c99
3870 check_host_cflags -Wall
3871 check_host_cflags -O3
3872
3873 check_64bit(){
3874     arch32=$1
3875     arch64=$2
3876     expr=$3
3877     check_code cc "" "int test[2*($expr) - 1]" &&
3878         subarch=$arch64 || subarch=$arch32
3879 }
3880
3881 case "$arch" in
3882     aarch64|alpha|ia64)
3883         spic=$shared
3884     ;;
3885     mips)
3886         check_64bit mips mips64 '_MIPS_SIM > 1'
3887         spic=$shared
3888     ;;
3889     parisc)
3890         check_64bit parisc parisc64 'sizeof(void *) > 4'
3891         spic=$shared
3892     ;;
3893     ppc)
3894         check_64bit ppc ppc64 'sizeof(void *) > 4'
3895         spic=$shared
3896     ;;
3897     s390)
3898         check_64bit s390 s390x 'sizeof(void *) > 4'
3899         spic=$shared
3900     ;;
3901     sparc)
3902         check_64bit sparc sparc64 'sizeof(void *) > 4'
3903         spic=$shared
3904     ;;
3905     x86)
3906         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3907         if test "$subarch" = "x86_64"; then
3908             spic=$shared
3909         fi
3910     ;;
3911     ppc)
3912         check_cc <<EOF && subarch="ppc64"
3913         int test[(int)sizeof(char*) - 7];
3914 EOF
3915     ;;
3916 esac
3917
3918 enable $subarch
3919 enabled spic && enable_weak pic
3920
3921 # OS specific
3922 case $target_os in
3923     aix)
3924         SHFLAGS=-shared
3925         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3926         enabled shared && add_ldflags -Wl,-brtl
3927         ;;
3928     android)
3929         disable symver
3930         SLIB_INSTALL_NAME='$(SLIBNAME)'
3931         SLIB_INSTALL_LINKS=
3932         # soname not set on purpose
3933         SHFLAGS=-shared
3934         ;;
3935     haiku)
3936         prefix_default="/boot/common"
3937         network_extralibs="-lnetwork"
3938         host_libs=
3939         ;;
3940     sunos)
3941         SHFLAGS='-shared -Wl,-h,$$(@F)'
3942         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3943         network_extralibs="-lsocket -lnsl"
3944         # When using suncc to build, the Solaris linker will mark
3945         # an executable with each instruction set encountered by
3946         # the Solaris assembler.  As our libraries contain their own
3947         # guards for processor-specific code, instead suppress
3948         # generation of the HWCAPS ELF section on Solaris x86 only.
3949         enabled_all suncc x86 &&
3950             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3951             add_ldflags -Wl,-M,mapfile
3952         nm_default='nm -P -g'
3953         ;;
3954     netbsd)
3955         disable symver
3956         oss_indev_extralibs="-lossaudio"
3957         oss_outdev_extralibs="-lossaudio"
3958         enabled gcc || check_ldflags -Wl,-zmuldefs
3959         ;;
3960     openbsd|bitrig)
3961         disable symver
3962         SHFLAGS='-shared'
3963         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3964         SLIB_INSTALL_LINKS=
3965         oss_indev_extralibs="-lossaudio"
3966         oss_outdev_extralibs="-lossaudio"
3967         ;;
3968     dragonfly)
3969         disable symver
3970         ;;
3971     freebsd)
3972         ;;
3973     bsd/os)
3974         add_extralibs -lpoll -lgnugetopt
3975         strip="strip -d"
3976         ;;
3977     darwin)
3978         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3979         enabled ppc && add_asflags -force_cpusubtype_ALL
3980         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3981         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3982         strip="${strip} -x"
3983         add_ldflags -Wl,-dynamic,-search_paths_first
3984         SLIBSUF=".dylib"
3985         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3986         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3987         objformat="macho"
3988         enabled x86_64 && objformat="macho64"
3989         enabled_any pic shared ||
3990             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3991         ;;
3992     mingw32*)
3993         if test $target_os = "mingw32ce"; then
3994             disable network
3995         else
3996             target_os=mingw32
3997         fi
3998         LIBTARGET=i386
3999         if enabled x86_64; then
4000             LIBTARGET="i386:x86-64"
4001         elif enabled arm; then
4002             LIBTARGET=arm-wince
4003         fi
4004         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4005         check_ldflags -Wl,--nxcompat
4006         check_ldflags -Wl,--dynamicbase
4007         shlibdir_default="$bindir_default"
4008         SLIBPREF=""
4009         SLIBSUF=".dll"
4010         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4011         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4012         dlltool="${cross_prefix}dlltool"
4013         if check_cmd lib.exe -list; then
4014             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4015             if enabled x86_64; then
4016                 LIBTARGET=x64
4017             fi
4018         elif check_cmd $dlltool --version; then
4019             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4020         fi
4021         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4022         SLIB_INSTALL_LINKS=
4023         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4024         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4025         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4026         objformat="win32"
4027         ranlib=:
4028         enable dos_paths
4029         ;;
4030     win32|win64)
4031         disable symver
4032         if enabled shared; then
4033             # Link to the import library instead of the normal static library
4034             # for shared libs.
4035             LD_LIB='%.lib'
4036             # Cannot build both shared and static libs with MSVC or icl.
4037             disable static
4038         fi
4039         shlibdir_default="$bindir_default"
4040         SLIBPREF=""
4041         SLIBSUF=".dll"
4042         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4043         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4044         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4045         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4046         SLIB_INSTALL_LINKS=
4047         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4048         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4049         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4050         objformat="win32"
4051         ranlib=:
4052         enable dos_paths
4053         ;;
4054     cygwin*)
4055         target_os=cygwin
4056         shlibdir_default="$bindir_default"
4057         SLIBPREF="cyg"
4058         SLIBSUF=".dll"
4059         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4060         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4061         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4062         SLIB_INSTALL_LINKS=
4063         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4064         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4065         objformat="win32"
4066         enable dos_paths
4067         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4068         ;;
4069     *-dos|freedos|opendos)
4070         network_extralibs="-lsocket"
4071         objformat="coff"
4072         enable dos_paths
4073         add_cppflags -U__STRICT_ANSI__
4074         ;;
4075     linux)
4076         enable dv1394
4077         ;;
4078     irix*)
4079         target_os=irix
4080         ranlib="echo ignoring ranlib"
4081         ;;
4082     os/2*)
4083         strip="lxlite -CS"
4084         ln_s="cp -f"
4085         objformat="aout"
4086         add_cppflags -D_GNU_SOURCE
4087         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4088         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4089         LIBSUF="_s.a"
4090         SLIBPREF=""
4091         SLIBSUF=".dll"
4092         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4093         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4094         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4095             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4096             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4097             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4098             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4099             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4100         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4101             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4102         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4103         enable dos_paths
4104         enable_weak os2threads
4105         ;;
4106     gnu/kfreebsd)
4107         add_cppflags -D_BSD_SOURCE
4108         ;;
4109     gnu)
4110         ;;
4111     qnx)
4112         add_cppflags -D_QNX_SOURCE
4113         network_extralibs="-lsocket"
4114         ;;
4115     symbian)
4116         SLIBSUF=".dll"
4117         enable dos_paths
4118         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4119         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4120         add_ldflags -Wl,--target1-abs,--no-undefined \
4121                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4122                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4123         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4124                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4125                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4126         ;;
4127     osf1)
4128         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4129         ;;
4130     minix)
4131         ;;
4132     plan9)
4133         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4134                      -D_REENTRANT_SOURCE        \
4135                      -D_RESEARCH_SOURCE         \
4136                      -DFD_SETSIZE=96            \
4137                      -DHAVE_SOCK_OPTS
4138         add_compat strtod.o strtod=avpriv_strtod
4139         network_extralibs='-lbsd'
4140         exeobjs=compat/plan9/main.o
4141         disable ffserver
4142         cp_f='cp'
4143         ;;
4144     none)
4145         ;;
4146     *)
4147         die "Unknown OS '$target_os'."
4148         ;;
4149 esac
4150
4151 # determine libc flavour
4152
4153 probe_libc(){
4154     pfx=$1
4155     pfx_no_=${pfx%_}
4156     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4157     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4158         eval ${pfx}libc_type=uclibc
4159         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4160     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4161         eval ${pfx}libc_type=glibc
4162         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4163     # MinGW headers can be installed on Cygwin, so check for newlib first.
4164     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4165         eval ${pfx}libc_type=newlib
4166         add_${pfx}cppflags -U__STRICT_ANSI__
4167     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4168     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4169         eval ${pfx}libc_type=mingw64
4170         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4171             add_compat msvcrt/snprintf.o
4172             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4173         fi
4174         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4175         eval test \$${pfx_no_}cc_type = "gcc" &&
4176             add_${pfx}cppflags -D__printf__=__gnu_printf__
4177     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4178          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4179         eval ${pfx}libc_type=mingw32
4180         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4181             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4182             die "ERROR: MinGW32 runtime version must be >= 3.15."
4183         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4184         eval test \$${pfx_no_}cc_type = "gcc" &&
4185             add_${pfx}cppflags -D__printf__=__gnu_printf__
4186     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4187         eval ${pfx}libc_type=msvcrt
4188         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4189         # 0x601 by default unless something else is set by the user.
4190         # This can easily lead to us detecting functions only present
4191         # in such new versions and producing binaries requiring windows 7.0.
4192         # Therefore explicitly set the default to XP unless the user has
4193         # set something else on the command line.
4194         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4195             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4196     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4197         eval ${pfx}libc_type=klibc
4198     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4199         eval ${pfx}libc_type=bionic
4200     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4201         eval ${pfx}libc_type=solaris
4202         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4203     fi
4204 }
4205
4206 probe_libc
4207 test -n "$libc_type" && enable libc_$libc_type
4208 probe_libc host_
4209 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4210
4211 case $libc_type in
4212     bionic)
4213         add_compat strtod.o strtod=avpriv_strtod
4214         ;;
4215     msvcrt)
4216         add_compat strtod.o strtod=avpriv_strtod
4217         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4218                                      _snprintf=avpriv_snprintf  \
4219                                      vsnprintf=avpriv_vsnprintf
4220         ;;
4221 esac
4222
4223 # hacks for compiler/libc/os combinations
4224
4225 if enabled_all tms470 libc_glibc; then
4226     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4227     add_cppflags -D__USER_LABEL_PREFIX__=
4228     add_cppflags -D__builtin_memset=memset
4229     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4230     add_cflags   -pds=48    # incompatible redefinition of macro
4231 fi
4232
4233 if enabled_all ccc libc_glibc; then
4234     add_ldflags -Wl,-z,now  # calls to libots crash without this
4235 fi
4236
4237 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4238     add_cppflags '-I\$(SRC_PATH)/compat/float'
4239
4240 esc(){
4241     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4242 }
4243
4244 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4245
4246 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4247
4248 set_default $PATHS_LIST
4249 set_default nm
4250
4251 # we need to build at least one lib type
4252 if ! enabled_any static shared; then
4253     cat <<EOF
4254 At least one library type must be built.
4255 Specify --enable-static to build the static libraries or --enable-shared to
4256 build the shared libraries as well. To only build the shared libraries specify
4257 --disable-static in addition to --enable-shared.
4258 EOF
4259     exit 1;
4260 fi
4261
4262 die_license_disabled() {
4263     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4264 }
4265
4266 die_license_disabled_gpl() {
4267     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4268 }
4269
4270 die_license_disabled gpl frei0r
4271 die_license_disabled gpl libcdio
4272 die_license_disabled gpl libsmbclient
4273 die_license_disabled gpl libutvideo
4274 die_license_disabled gpl libvidstab
4275 die_license_disabled gpl libx264
4276 die_license_disabled gpl libx265
4277 die_license_disabled gpl libxavs
4278 die_license_disabled gpl libxvid
4279 die_license_disabled gpl libzvbi
4280 die_license_disabled gpl x11grab
4281
4282 die_license_disabled nonfree libaacplus
4283 die_license_disabled nonfree libfaac
4284 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4285 enabled gpl && die_license_disabled_gpl nonfree openssl
4286
4287 die_license_disabled version3 libopencore_amrnb
4288 die_license_disabled version3 libopencore_amrwb
4289 die_license_disabled version3 libsmbclient
4290 die_license_disabled version3 libvo_aacenc
4291 die_license_disabled version3 libvo_amrwbenc
4292
4293 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4294
4295 disabled optimizations || check_cflags -fomit-frame-pointer
4296
4297 enable_weak_pic() {
4298     disabled pic && return
4299     enable pic
4300     add_cppflags -DPIC
4301     case "$target_os" in
4302     mingw*|cygwin*)
4303         ;;
4304     *)
4305         add_cflags -fPIC
4306         ;;
4307     esac
4308     add_asflags  -fPIC
4309 }
4310
4311 enabled pic && enable_weak_pic
4312
4313 check_cc <<EOF || die "Symbol mangling check failed."
4314 int ff_extern;
4315 EOF
4316 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4317 extern_prefix=${sym%%ff_extern*}
4318
4319 check_cc <<EOF && enable_weak inline_asm
4320 void foo(void) { __asm__ volatile ("" ::); }
4321 EOF
4322
4323 _restrict=
4324 for restrict_keyword in restrict __restrict__ __restrict; do
4325     check_cc <<EOF && _restrict=$restrict_keyword && break
4326 void foo(char * $restrict_keyword p);
4327 EOF
4328 done
4329
4330 check_cc <<EOF && enable pragma_deprecated
4331 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4332 EOF
4333
4334 check_cc <<EOF && enable attribute_packed
4335 struct { int x; } __attribute__((packed)) x;
4336 EOF
4337
4338 check_cc <<EOF && enable attribute_may_alias
4339 union { int x; } __attribute__((may_alias)) x;
4340 EOF
4341
4342 check_cc <<EOF || die "endian test failed"
4343 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4344 EOF
4345 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4346
4347 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4348     if ! enabled bigendian ;then
4349         enable vsx
4350     fi
4351 fi
4352
4353 check_gas() {
4354     log "check_gas using '$as' as AS"
4355     # :vararg is used on aarch64, arm and ppc altivec
4356     check_as <<EOF || return 1
4357 .macro m n, y:vararg=0
4358 \n: .int \y
4359 .endm
4360 m x
4361 EOF
4362     # .altmacro is only used in arm asm
4363     ! enabled arm || check_as <<EOF || return 1
4364 .altmacro
4365 EOF
4366     enable gnu_as
4367     return 0
4368 }
4369
4370 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4371     enabled_any arm aarch64 && nogas=die
4372     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4373
4374     if ! check_gas ; then
4375         as=${gas:=$as}
4376         check_gas || \
4377             $nogas "GNU assembler not found, install gas-preprocessor"
4378     fi
4379
4380     check_as <<EOF && enable as_func
4381 .func test
4382 .endfunc
4383 EOF
4384 fi
4385
4386 check_inline_asm inline_asm_labels '"1:\n"'
4387
4388 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4389
4390 if enabled aarch64; then
4391     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4392     # internal assembler in clang 3.3 does not support this instruction
4393     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4394     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4395
4396     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4397
4398 elif enabled alpha; then
4399
4400     check_cflags -mieee
4401
4402 elif enabled arm; then
4403
4404     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4405 float func(float a, float b){ return a+b; }
4406 EOF
4407
4408     enabled thumb && check_cflags -mthumb || check_cflags -marm
4409
4410     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4411         enable vfp_args
4412     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4413         case "${cross_prefix:-$cc}" in
4414             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4415             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4416 __asm__ (".eabi_attribute 28, 1");
4417 int main(void) { return 0; }
4418 EOF
4419         esac
4420         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4421     fi
4422
4423     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4424     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4425     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4426     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4427     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4428     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4429
4430     [ $target_os = linux ] || [ $target_os = android ] ||
4431         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4432             $ARCH_EXT_LIST_ARM
4433
4434     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4435
4436     check_as <<EOF && enable as_dn_directive
4437 ra .dn d0.i16
4438 .unreq ra
4439 EOF
4440
4441     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4442
4443 elif enabled mips; then
4444
4445     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4446     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4447      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4448     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4449      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4450     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4451      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4452     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4453      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4454
4455 elif enabled parisc; then
4456
4457     if enabled gcc; then
4458         case $($cc -dumpversion) in
4459             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4460         esac
4461     fi
4462
4463 elif enabled ppc; then
4464
4465     enable local_aligned_8 local_aligned_16 local_aligned_32
4466
4467     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4468     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4469     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4470     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4471
4472     # AltiVec flags: The FSF version of GCC differs from the Apple version
4473     if enabled altivec; then
4474         check_cflags -maltivec -mabi=altivec &&
4475         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4476         check_cflags -faltivec
4477
4478         # check if our compiler supports Motorola AltiVec C API
4479         check_cc <<EOF || disable altivec
4480 $inc_altivec_h
4481 int main(void) {
4482     vector signed int v1 = (vector signed int) { 0 };
4483     vector signed int v2 = (vector signed int) { 1 };
4484     v1 = vec_add(v1, v2);
4485     return 0;
4486 }
4487 EOF
4488
4489         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4490     fi
4491
4492     if enabled vsx; then
4493         check_cflags -mvsx
4494     fi
4495 elif enabled x86; then
4496
4497     check_builtin rdtsc    intrin.h   "__rdtsc()"
4498     check_builtin mm_empty mmintrin.h "_mm_empty()"
4499
4500     enable local_aligned_8 local_aligned_16 local_aligned_32
4501
4502     # check whether EBP is available on x86
4503     # As 'i' is stored on the stack, this program will crash
4504     # if the base pointer is used to access it because the
4505     # base pointer is cleared in the inline assembly code.
4506     check_exec_crash <<EOF && enable ebp_available
4507 volatile int i=0;
4508 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4509 return i;
4510 EOF
4511
4512     # check whether EBX is available on x86
4513     check_inline_asm ebx_available '""::"b"(0)' &&
4514         check_inline_asm ebx_available '"":::"%ebx"'
4515
4516     # check whether xmm clobbers are supported
4517     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4518
4519     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4520         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4521
4522     # check whether binutils is new enough to compile SSSE3/MMXEXT
4523     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4524     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4525
4526     if ! disabled_any asm mmx yasm; then
4527         if check_cmd $yasmexe --version; then
4528             enabled x86_64 && yasm_extra="-m amd64"
4529             yasm_debug="-g dwarf2"
4530         elif check_cmd nasm -v; then
4531             yasmexe=nasm
4532             yasm_debug="-g -F dwarf"
4533             if enabled x86_64; then
4534                 case "$objformat" in
4535                     elf)   objformat=elf64 ;;
4536                     win32) objformat=win64 ;;
4537                 esac
4538             fi
4539         fi
4540
4541         YASMFLAGS="-f $objformat $yasm_extra"
4542         enabled pic               && append YASMFLAGS "-DPIC"
4543         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4544         case "$objformat" in
4545             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4546         esac
4547
4548         check_yasm "movbe ecx, [5]" && enable yasm ||
4549             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4550         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4551         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4552         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4553         check_yasm "CPU amdnop" || disable cpunop
4554     fi
4555
4556     case "$cpu" in
4557         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4558             disable fast_clz
4559         ;;
4560     esac
4561
4562 fi
4563
4564 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4565
4566 check_ldflags -Wl,--as-needed
4567
4568 if check_func dlopen; then
4569     ldl=
4570 elif check_func dlopen -ldl; then
4571     ldl=-ldl
4572 fi
4573
4574 if ! disabled network; then
4575     check_func getaddrinfo $network_extralibs
4576     check_func getservbyport $network_extralibs
4577     check_func inet_aton $network_extralibs
4578
4579     check_type netdb.h "struct addrinfo"
4580     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4581     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4582     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4583     check_type poll.h "struct pollfd"
4584     check_type netinet/sctp.h "struct sctp_event_subscribe"
4585     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4586     check_type netinet/in.h "struct sockaddr_in6"
4587     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4588     check_type "sys/types.h sys/socket.h" socklen_t
4589
4590     # Prefer arpa/inet.h over winsock2
4591     if check_header arpa/inet.h ; then
4592         check_func closesocket
4593     elif check_header winsock2.h ; then
4594         check_func_headers winsock2.h closesocket -lws2 &&
4595             network_extralibs="-lws2" ||
4596         { check_func_headers winsock2.h closesocket -lws2_32 &&
4597             network_extralibs="-lws2_32"; } || disable winsock2_h network
4598         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4599
4600         check_type ws2tcpip.h socklen_t
4601         check_type ws2tcpip.h "struct addrinfo"
4602         check_type ws2tcpip.h "struct group_source_req"
4603         check_type ws2tcpip.h "struct ip_mreq_source"
4604         check_type ws2tcpip.h "struct ipv6_mreq"
4605         check_type winsock2.h "struct pollfd"
4606         check_struct winsock2.h "struct sockaddr" sa_len
4607         check_type ws2tcpip.h "struct sockaddr_in6"
4608         check_type ws2tcpip.h "struct sockaddr_storage"
4609     else
4610         disable network
4611     fi
4612 fi
4613
4614 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4615 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4616 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4617 check_builtin sarestart signal.h "SA_RESTART"
4618 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4619
4620 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4621 check_func  ${malloc_prefix}memalign            && enable memalign
4622 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4623
4624 check_func  access
4625 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4626 check_func  fcntl
4627 check_func  fork
4628 check_func  gethrtime
4629 check_func  getopt
4630 check_func  getrusage
4631 check_func  gettimeofday
4632 check_func  isatty
4633 check_func  localtime_r
4634 check_func  mach_absolute_time
4635 check_func  mkstemp
4636 check_func  mmap
4637 check_func  mprotect
4638 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4639 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4640 check_func  sched_getaffinity
4641 check_func  setrlimit
4642 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4643 check_func  strerror_r
4644 check_func  sysconf
4645 check_func  sysctl
4646 check_func  usleep
4647
4648 check_func_headers conio.h kbhit
4649 check_func_headers io.h setmode
4650 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4651 check_func_headers stdlib.h getenv
4652
4653 check_func_headers windows.h CoTaskMemFree -lole32
4654 check_func_headers windows.h GetProcessAffinityMask
4655 check_func_headers windows.h GetProcessTimes
4656 check_func_headers windows.h GetSystemTimeAsFileTime
4657 check_func_headers windows.h MapViewOfFile
4658 check_func_headers windows.h PeekNamedPipe
4659 check_func_headers windows.h SetConsoleTextAttribute
4660 check_func_headers windows.h Sleep
4661 check_func_headers windows.h VirtualAlloc
4662 check_func_headers glob.h glob
4663 enabled xlib &&
4664     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4665
4666 check_header cl/cl.h
4667 check_header direct.h
4668 check_header dlfcn.h
4669 check_header dxva.h
4670 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4671 check_header io.h
4672 check_header libcrystalhd/libcrystalhd_if.h
4673 check_header mach/mach_time.h
4674 check_header malloc.h
4675 check_header poll.h
4676 check_header sys/mman.h
4677 check_header sys/param.h
4678 check_header sys/resource.h
4679 check_header sys/select.h
4680 check_header sys/time.h
4681 check_header sys/un.h
4682 check_header termios.h
4683 check_header unistd.h
4684 check_header vdpau/vdpau.h
4685 check_header vdpau/vdpau_x11.h
4686 check_header VideoDecodeAcceleration/VDADecoder.h
4687 check_header windows.h
4688 check_header X11/extensions/XvMClib.h
4689 check_header asm/types.h
4690
4691 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4692 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4693 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4694
4695 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4696
4697 if ! disabled w32threads && ! enabled pthreads; then
4698     check_func_headers "windows.h process.h" _beginthreadex &&
4699         enable w32threads || disable w32threads
4700 fi
4701
4702 # check for some common methods of building with pthread support
4703 # do this before the optional library checks as some of them require pthreads
4704 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4705     enable pthreads
4706     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4707         add_cflags -pthread
4708         add_extralibs -pthread
4709     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4710         add_cflags -pthreads
4711         add_extralibs -pthreads
4712     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4713         add_cflags -ldl -pthread
4714         add_extralibs -ldl -pthread
4715     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4716         add_extralibs -lpthreadGC2
4717     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4718         :
4719     elif ! check_func pthread_join && ! check_func pthread_create; then
4720         disable pthreads
4721     fi
4722     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4723 fi
4724
4725
4726 if enabled pthreads; then
4727   check_func pthread_cancel
4728 fi
4729
4730 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4731 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4732
4733 check_lib math.h sin -lm && LIBM="-lm"
4734 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4735
4736 atan2f_args=2
4737 ldexpf_args=2
4738 powf_args=2
4739 fminf_args=2
4740
4741 for func in $MATH_FUNCS; do
4742     eval check_mathfunc $func \${${func}_args:-1}
4743 done
4744
4745 # these are off by default, so fail if requested and not available
4746 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4747 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4748                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4749                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4750 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4751 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4752 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4753 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4754 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4755 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4756 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4757 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4758 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4759 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4760                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4761                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4762 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4763 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4764 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4765 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4766 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4767 enabled fontconfig        && enable libfontconfig
4768 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4769 enabled libfreetype       && require_libfreetype
4770 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4771 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4772 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4773                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4774                                done || die "ERROR: libgsm not found"; }
4775 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4776 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4777 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4778 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4779 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4780 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4781 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4782 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4783                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4784                                die "ERROR: libopenjpeg not found"; }
4785 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4786 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4787 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4788 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4789 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4790 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4791 enabled libsmbclient      && { { check_pkg_config smbclient libsmbclient.h smbc_init &&
4792                                  require_pkg_config smbclient libsmbclient.h smbc_init; } ||
4793                                  require smbclient libsmbclient.h smbc_init -lsmbclient; }
4794 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4795 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4796 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4797 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4798     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4799     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4800 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4801 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4802                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4803                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4804 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4805 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4806 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4807 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4808 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4809 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4810 enabled libvpx            && {
4811     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4812                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4813     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4814                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4815     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4816     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4817 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4818 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion &&
4819                              { check_code cc webp/encode.h "WebPPicture wp; wp.use_argb++" ||
4820                                die "ERROR: libwebp too old."; }
4821 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4822                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4823                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4824 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4825                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4826                                die "ERROR: libx265 version must be >= 17."; }
4827 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4828 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4829 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4830 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4831 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4832                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4833                                die "ERROR: openal not found"; } &&
4834                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4835                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4836 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4837                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4838                                die "ERROR: opencl not found"; } &&
4839                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4840                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4841                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4842 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4843                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4844                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4845                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4846                                die "ERROR: opengl not found."
4847                              }
4848 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4849                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4850                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4851                                die "ERROR: openssl not found"; }
4852 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4853
4854 if enabled gnutls; then
4855     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4856     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4857 fi
4858
4859 # libdc1394 check
4860 if enabled libdc1394; then
4861     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4862         enable libdc1394_2; } ||
4863     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4864         enable libdc1394_1; } ||
4865     die "ERROR: No version of libdc1394 found "
4866 fi
4867
4868 SDL_CONFIG="${cross_prefix}sdl-config"
4869 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4870     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4871     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4872     enable sdl
4873 else
4874   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4875     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4876     sdl_libs=$("${SDL_CONFIG}" --libs)
4877     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4878     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4879     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4880     enable sdl
4881   fi
4882 fi
4883 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4884
4885 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4886 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4887 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4888 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4889 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4890
4891 check_header linux/fb.h
4892 check_header linux/videodev.h
4893 check_header linux/videodev2.h
4894 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4895
4896 check_header sys/videoio.h
4897
4898 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4899 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4900 # w32api 3.12 had it defined wrong
4901 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4902
4903 check_type "dshow.h" IBaseFilter
4904
4905 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4906 { check_header dev/bktr/ioctl_meteor.h &&
4907   check_header dev/bktr/ioctl_bt848.h; } ||
4908 { check_header machine/ioctl_meteor.h &&
4909   check_header machine/ioctl_bt848.h; } ||
4910 { check_header dev/video/meteor/ioctl_meteor.h &&
4911   check_header dev/video/bktr/ioctl_bt848.h; } ||
4912 check_header dev/ic/bt8xx.h
4913
4914 check_header sndio.h
4915 if check_struct sys/soundcard.h audio_buf_info bytes; then
4916     enable_safe sys/soundcard.h
4917 else
4918     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4919     #include <sys/soundcard.h>
4920     audio_buf_info abc;
4921 EOF
4922 fi
4923 check_header soundcard.h
4924
4925 enabled_any alsa_indev alsa_outdev &&
4926     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4927
4928 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4929     check_func jack_port_get_latency_range -ljack
4930
4931 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4932
4933 if enabled libcdio; then
4934     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4935     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4936     die "ERROR: libcdio-paranoia not found"
4937 fi
4938
4939 enabled xlib &&
4940     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4941
4942 enabled x11grab                                           &&
4943 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4944 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4945 { enabled xlib || die "ERROR: Xlib not found"; }
4946
4947 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4948
4949 enabled dxva2api_h &&
4950     check_cc <<EOF && enable dxva2api_cobj
4951 #define _WIN32_WINNT 0x0600
4952 #define COBJMACROS
4953 #include <windows.h>
4954 #include <d3d9.h>
4955 #include <dxva2api.h>
4956 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
4957 EOF
4958
4959 enabled vaapi &&
4960     check_lib va/va.h vaInitialize -lva ||
4961     disable vaapi
4962
4963 enabled vdpau &&
4964     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4965     disable vdpau
4966
4967 enabled vdpau && enabled xlib &&
4968     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4969     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4970     enable vdpau_x11
4971
4972 # Funny iconv installations are not unusual, so check it after all flags have been set
4973 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4974
4975 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4976
4977 # add some useful compiler flags if supported
4978 check_cflags -Wdeclaration-after-statement
4979 check_cflags -Wall
4980 check_cflags -Wdisabled-optimization
4981 check_cflags -Wpointer-arith
4982 check_cflags -Wredundant-decls
4983 check_cflags -Wwrite-strings
4984 check_cflags -Wtype-limits
4985 check_cflags -Wundef
4986 check_cflags -Wmissing-prototypes
4987 check_cflags -Wno-pointer-to-int-cast
4988 check_cflags -Wstrict-prototypes
4989 check_cflags -Wempty-body
4990 enabled extra_warnings && check_cflags -Winline
4991
4992 check_disable_warning(){
4993     warning_flag=-W${1#-Wno-}
4994     test_cflags $warning_flag && add_cflags $1
4995 }
4996
4997 check_disable_warning -Wno-parentheses
4998 check_disable_warning -Wno-switch
4999 check_disable_warning -Wno-format-zero-length
5000 check_disable_warning -Wno-pointer-sign
5001
5002 # add some linker flags
5003 check_ldflags -Wl,--warn-common
5004 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5005 enabled rpath && add_ldflags -Wl,-rpath,$libdir
5006 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5007
5008 # add some strip flags
5009 # -wN '..@*' is more selective than -x, but not available everywhere.
5010 check_stripflags -wN \'..@*\' || check_stripflags -x
5011
5012 enabled neon_clobber_test &&
5013     check_ldflags -Wl,--wrap,avcodec_open2              \
5014                   -Wl,--wrap,avcodec_decode_audio4      \
5015                   -Wl,--wrap,avcodec_decode_video2      \
5016                   -Wl,--wrap,avcodec_decode_subtitle2   \
5017                   -Wl,--wrap,avcodec_encode_audio2      \
5018                   -Wl,--wrap,avcodec_encode_video2      \
5019                   -Wl,--wrap,avcodec_encode_subtitle    \
5020                   -Wl,--wrap,swr_convert                \
5021                   -Wl,--wrap,avresample_convert ||
5022     disable neon_clobber_test
5023
5024 enabled xmm_clobber_test &&
5025     check_ldflags -Wl,--wrap,avcodec_open2              \
5026                   -Wl,--wrap,avcodec_decode_audio4      \
5027                   -Wl,--wrap,avcodec_decode_video2      \
5028                   -Wl,--wrap,avcodec_decode_subtitle2   \
5029                   -Wl,--wrap,avcodec_encode_audio2      \
5030                   -Wl,--wrap,avcodec_encode_video       \
5031                   -Wl,--wrap,avcodec_encode_video2      \
5032                   -Wl,--wrap,avcodec_encode_subtitle    \
5033                   -Wl,--wrap,swr_convert                \
5034                   -Wl,--wrap,avresample_convert         \
5035                   -Wl,--wrap,sws_scale ||
5036     disable xmm_clobber_test
5037
5038 echo "X{};" > $TMPV
5039 if test_ldflags -Wl,--version-script,$TMPV; then
5040     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5041     check_cc <<EOF && enable symver_asm_label
5042 void ff_foo(void) __asm__ ("av_foo@VERSION");
5043 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5044 EOF
5045     check_cc <<EOF && enable symver_gnu_asm
5046 __asm__(".symver ff_foo,av_foo@VERSION");
5047 void ff_foo(void) {}
5048 EOF
5049 fi
5050
5051 if [ -z "$optflags" ]; then
5052     if enabled small; then
5053         optflags=$cflags_size
5054     elif enabled optimizations; then
5055         optflags=$cflags_speed
5056     else
5057         optflags=$cflags_noopt
5058     fi
5059 fi
5060
5061 check_optflags(){
5062     check_cflags "$@"
5063     enabled lto && check_ldflags "$@"
5064 }
5065
5066
5067 if enabled lto; then
5068     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5069     check_cflags  -flto
5070     check_ldflags -flto $cpuflags
5071     disable inline_asm_direct_symbol_refs
5072 fi
5073
5074 check_optflags $optflags
5075 check_optflags -fno-math-errno
5076 check_optflags -fno-signed-zeros
5077
5078 enabled ftrapv && check_cflags -ftrapv
5079
5080 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5081 int x;
5082 EOF
5083
5084
5085 if enabled icc; then
5086     # Just warnings, no remarks
5087     check_cflags -w1
5088     # -wd: Disable following warnings
5089     # 144, 167, 556: -Wno-pointer-sign
5090     # 188: enumerated type mixed with another type
5091     # 1292: attribute "foo" ignored
5092     # 1419: external declaration in primary source file
5093     # 10006: ignoring unknown option -fno-signed-zeros
5094     # 10148: ignoring unknown option -Wno-parentheses
5095     # 10156: ignoring option '-W'; no argument required
5096     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5097     # 11030: Warning unknown option --as-needed
5098     # 10156: ignoring option '-export'; no argument required
5099     check_ldflags -wd10156,11030
5100     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5101     enable ebp_available
5102     # The test above does not test linking
5103     enabled lto && disable symver_asm_label
5104     if enabled x86_32; then
5105         icc_version=$($cc -dumpversion)
5106         test ${icc_version%%.*} -ge 11 &&
5107             check_cflags -falign-stack=maintain-16-byte ||
5108             disable aligned_stack
5109     fi
5110 elif enabled ccc; then
5111     # disable some annoying warnings
5112     add_cflags -msg_disable bitnotint
5113     add_cflags -msg_disable mixfuncvoid
5114     add_cflags -msg_disable nonstandcast
5115     add_cflags -msg_disable unsupieee
5116 elif enabled gcc; then
5117     check_optflags -fno-tree-vectorize
5118     check_cflags -Werror=format-security
5119     check_cflags -Werror=implicit-function-declaration
5120     check_cflags -Werror=missing-prototypes
5121     check_cflags -Werror=return-type
5122     check_cflags -Werror=vla
5123     check_cflags -Wformat
5124     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5125 elif enabled llvm_gcc; then
5126     check_cflags -mllvm -stack-alignment=16
5127 elif enabled clang; then
5128     check_cflags -mllvm -stack-alignment=16
5129     check_cflags -Qunused-arguments
5130     check_cflags -Werror=implicit-function-declaration
5131     check_cflags -Werror=missing-prototypes
5132     check_cflags -Werror=return-type
5133 elif enabled cparser; then
5134     add_cflags -Wno-missing-variable-declarations
5135     add_cflags -Wno-empty-statement
5136 elif enabled armcc; then
5137     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5138     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5139     # 2523: use of inline assembly is deprecated
5140     add_cflags -W${armcc_opt},--diag_suppress=2523
5141     add_cflags -W${armcc_opt},--diag_suppress=1207
5142     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5143     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5144     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5145     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5146 elif enabled tms470; then
5147     add_cflags -pds=824 -pds=837
5148     disable inline_asm
5149 elif enabled pathscale; then
5150     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5151 elif enabled_any msvc icl; then
5152     enabled x86_32 && disable aligned_stack
5153     enabled_all x86_32 debug && add_cflags -Oy-
5154     enabled debug && add_ldflags -debug
5155     enable pragma_deprecated
5156     if enabled icl; then
5157         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5158         # (correctly) on icl 13.x.
5159         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5160             add_cflags -Qansi-alias
5161         # Some inline asm is not compilable in debug
5162         if enabled debug; then
5163             disable ebp_available
5164             disable ebx_available
5165         fi
5166     fi
5167     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5168     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5169 fi
5170
5171 case $as_type in
5172     clang)
5173         add_asflags -Qunused-arguments
5174     ;;
5175 esac
5176
5177 case $ld_type in
5178     clang)
5179         check_ldflags -Qunused-arguments
5180     ;;
5181 esac
5182
5183 case $target_os in
5184     osf1)
5185         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5186     ;;
5187     plan9)
5188         add_cppflags -Dmain=plan9_main
5189     ;;
5190 esac
5191
5192 enable frame_thread_encoder
5193
5194 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5195
5196 check_deps $CONFIG_LIST       \
5197            $CONFIG_EXTRA      \
5198            $HAVE_LIST         \
5199            $ALL_COMPONENTS    \
5200
5201 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
5202
5203
5204 if test $target_os = "haiku"; then
5205     disable memalign
5206     disable posix_memalign
5207 fi
5208
5209 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5210     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5211     enable dxva2_lib
5212
5213 ! enabled_any memalign posix_memalign aligned_malloc &&
5214     enabled simd_align_16 && enable memalign_hack
5215
5216 # add_dep lib dep
5217 # -> enable ${lib}_deps_${dep}
5218 # -> add $dep to ${lib}_deps only once
5219 add_dep() {
5220     lib=$1
5221     dep=$2
5222     enabled "${lib}_deps_${dep}" && return 0
5223     enable  "${lib}_deps_${dep}"
5224     prepend "${lib}_deps" $dep
5225 }
5226
5227 # merge deps lib components
5228 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5229 merge_deps() {
5230     lib=$1
5231     shift
5232     for comp in $*; do
5233         enabled $comp || continue
5234         eval "dep=\"\$${comp}_deps\""
5235         for d in $dep; do
5236             add_dep $lib $d
5237         done
5238     done
5239 }
5240
5241 merge_deps libavfilter $FILTER_LIST
5242
5243 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5244
5245 for thread in $THREADS_LIST; do
5246     if enabled $thread; then
5247         test -n "$thread_type" &&
5248             die "ERROR: Only one thread type must be selected." ||
5249             thread_type="$thread"
5250     fi
5251 done
5252
5253 enabled zlib && add_cppflags -DZLIB_CONST
5254
5255 # conditional library dependencies, in linking order
5256 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5257 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5258 enabled aresample_filter    && prepend avfilter_deps "swresample"
5259 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5260 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5261 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5262 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5263 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5264 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5265 enabled mp_filter           && prepend avfilter_deps "avcodec"
5266 enabled pan_filter          && prepend avfilter_deps "swresample"
5267 enabled pp_filter           && prepend avfilter_deps "postproc"
5268 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5269 enabled resample_filter && prepend avfilter_deps "avresample"
5270 enabled sab_filter          && prepend avfilter_deps "swscale"
5271 enabled scale_filter    && prepend avfilter_deps "swscale"
5272 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5273 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5274 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5275
5276 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5277
5278 enabled opus_decoder    && prepend avcodec_deps "swresample"
5279
5280 expand_deps(){
5281     lib_deps=${1}_deps
5282     eval "deps=\$$lib_deps"
5283     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5284     unique $lib_deps
5285 }
5286
5287 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5288 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5289
5290 map 'expand_deps $v' $LIBRARY_LIST
5291
5292 echo "install prefix            $prefix"
5293 echo "source path               $source_path"
5294 echo "C compiler                $cc"
5295 echo "C library                 $libc_type"
5296 if test "$host_cc" != "$cc"; then
5297     echo "host C compiler           $host_cc"
5298     echo "host C library            $host_libc_type"
5299 fi
5300 echo "ARCH                      $arch ($cpu)"
5301 if test "$build_suffix" != ""; then
5302     echo "build suffix              $build_suffix"
5303 fi
5304 if test "$progs_suffix" != ""; then
5305     echo "progs suffix              $progs_suffix"
5306 fi
5307 if test "$extra_version" != ""; then
5308     echo "version string suffix     $extra_version"
5309 fi
5310 echo "big-endian                ${bigendian-no}"
5311 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5312 if enabled x86; then
5313     echo "${yasmexe}                      ${yasm-no}"
5314     echo "MMX enabled               ${mmx-no}"
5315     echo "MMXEXT enabled            ${mmxext-no}"
5316     echo "3DNow! enabled            ${amd3dnow-no}"
5317     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5318     echo "SSE enabled               ${sse-no}"
5319     echo "SSSE3 enabled             ${ssse3-no}"
5320     echo "AVX enabled               ${avx-no}"
5321     echo "XOP enabled               ${xop-no}"
5322     echo "FMA3 enabled              ${fma3-no}"
5323     echo "FMA4 enabled              ${fma4-no}"
5324     echo "i686 features enabled     ${i686-no}"
5325     echo "CMOV is fast              ${fast_cmov-no}"
5326     echo "EBX available             ${ebx_available-no}"
5327     echo "EBP available             ${ebp_available-no}"
5328 fi
5329 if enabled aarch64; then
5330     echo "NEON enabled              ${neon-no}"
5331     echo "VFP enabled               ${vfp-no}"
5332 fi
5333 if enabled arm; then
5334     echo "ARMv5TE enabled           ${armv5te-no}"
5335     echo "ARMv6 enabled             ${armv6-no}"
5336     echo "ARMv6T2 enabled           ${armv6t2-no}"
5337     echo "VFP enabled               ${vfp-no}"
5338     echo "NEON enabled              ${neon-no}"
5339     echo "THUMB enabled             ${thumb-no}"
5340 fi
5341 if enabled mips; then
5342     echo "MIPS FPU enabled          ${mipsfpu-no}"
5343     echo "MIPS32R2 enabled          ${mips32r2-no}"
5344     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5345     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5346 fi
5347 if enabled ppc; then
5348     echo "AltiVec enabled           ${altivec-no}"
5349     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5350     echo "PPC VSX optimizations     ${vsx-no}"
5351     echo "dcbzl available           ${dcbzl-no}"
5352 fi
5353 echo "debug symbols             ${debug-no}"
5354 echo "strip symbols             ${stripping-no}"
5355 echo "optimize for size         ${small-no}"
5356 echo "optimizations             ${optimizations-no}"
5357 echo "static                    ${static-no}"
5358 echo "shared                    ${shared-no}"
5359 echo "postprocessing support    ${postproc-no}"
5360 echo "new filter support        ${avfilter-no}"
5361 echo "network support           ${network-no}"
5362 echo "threading support         ${thread_type-no}"
5363 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5364 echo "SDL support               ${sdl-no}"
5365 echo "opencl enabled            ${opencl-no}"
5366 echo "texi2html enabled         ${texi2html-no}"
5367 echo "perl enabled              ${perl-no}"
5368 echo "pod2man enabled           ${pod2man-no}"
5369 echo "makeinfo enabled          ${makeinfo-no}"
5370 test -n "$random_seed" &&
5371     echo "random seed               ${random_seed}"
5372 echo
5373
5374 echo "External libraries:"
5375 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5376 echo
5377
5378 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5379     echo "Enabled ${type}s:"
5380     eval list=\$$(toupper $type)_LIST
5381     print_enabled '_*' $list | print_3_columns
5382     echo
5383 done
5384
5385 license="LGPL version 2.1 or later"
5386 if enabled nonfree; then
5387     license="nonfree and unredistributable"
5388 elif enabled gplv3; then
5389     license="GPL version 3 or later"
5390 elif enabled lgplv3; then
5391     license="LGPL version 3 or later"
5392 elif enabled gpl; then
5393     license="GPL version 2 or later"
5394 fi
5395
5396 echo "License: $license"
5397
5398 echo "Creating config.mak, config.h, and doc/config.texi..."
5399
5400 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5401
5402 enabled stripping || strip="echo skipping strip"
5403
5404 config_files="$TMPH config.mak doc/config.texi"
5405
5406 cat > config.mak <<EOF
5407 # Automatically generated by configure - do not modify!
5408 ifndef FFMPEG_CONFIG_MAK
5409 FFMPEG_CONFIG_MAK=1
5410 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5411 prefix=$prefix
5412 LIBDIR=\$(DESTDIR)$libdir
5413 SHLIBDIR=\$(DESTDIR)$shlibdir
5414 INCDIR=\$(DESTDIR)$incdir
5415 BINDIR=\$(DESTDIR)$bindir
5416 DATADIR=\$(DESTDIR)$datadir
5417 DOCDIR=\$(DESTDIR)$docdir
5418 MANDIR=\$(DESTDIR)$mandir
5419 SRC_PATH=$source_path
5420 ifndef MAIN_MAKEFILE
5421 SRC_PATH:=\$(SRC_PATH:.%=..%)
5422 endif
5423 CC_IDENT=$cc_ident
5424 ARCH=$arch
5425 INTRINSICS=$intrinsics
5426 CC=$cc
5427 CXX=$cxx
5428 AS=$as
5429 LD=$ld
5430 DEPCC=$dep_cc
5431 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5432 DEPAS=$as
5433 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5434 YASM=$yasmexe
5435 DEPYASM=$yasmexe
5436 AR=$ar
5437 ARFLAGS=$arflags
5438 AR_O=$ar_o
5439 RANLIB=$ranlib
5440 STRIP=$strip
5441 CP=cp -p
5442 LN_S=$ln_s
5443 CPPFLAGS=$CPPFLAGS
5444 CFLAGS=$CFLAGS
5445 CXXFLAGS=$CXXFLAGS
5446 ASFLAGS=$ASFLAGS
5447 AS_C=$AS_C
5448 AS_O=$AS_O
5449 CC_C=$CC_C
5450 CC_E=$CC_E
5451 CC_O=$CC_O
5452 CXX_C=$CXX_C
5453 CXX_O=$CXX_O
5454 LD_O=$LD_O
5455 LD_LIB=$LD_LIB
5456 LD_PATH=$LD_PATH
5457 DLLTOOL=$dlltool
5458 WINDRES=$windres
5459 DEPWINDRES=$dep_cc
5460 DOXYGEN=$doxygen
5461 LDFLAGS=$LDFLAGS
5462 LDEXEFLAGS=$LDEXEFLAGS
5463 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5464 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5465 YASMFLAGS=$YASMFLAGS
5466 BUILDSUF=$build_suffix
5467 PROGSSUF=$progs_suffix
5468 FULLNAME=$FULLNAME
5469 LIBPREF=$LIBPREF
5470 LIBSUF=$LIBSUF
5471 LIBNAME=$LIBNAME
5472 SLIBPREF=$SLIBPREF
5473 SLIBSUF=$SLIBSUF
5474 EXESUF=$EXESUF
5475 EXTRA_VERSION=$extra_version
5476 CCDEP=$CCDEP
5477 CXXDEP=$CXXDEP
5478 CCDEP_FLAGS=$CCDEP_FLAGS
5479 ASDEP=$ASDEP
5480 ASDEP_FLAGS=$ASDEP_FLAGS
5481 CC_DEPFLAGS=$CC_DEPFLAGS
5482 AS_DEPFLAGS=$AS_DEPFLAGS
5483 HOSTCC=$host_cc
5484 HOSTLD=$host_ld
5485 HOSTCFLAGS=$host_cflags
5486 HOSTCPPFLAGS=$host_cppflags
5487 HOSTEXESUF=$HOSTEXESUF
5488 HOSTLDFLAGS=$host_ldflags
5489 HOSTLIBS=$host_libs
5490 DEPHOSTCC=$host_cc
5491 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5492 HOSTCCDEP=$HOSTCCDEP
5493 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5494 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5495 HOSTCC_C=$HOSTCC_C
5496 HOSTCC_O=$HOSTCC_O
5497 HOSTLD_O=$HOSTLD_O
5498 TARGET_EXEC=$target_exec $target_exec_args
5499 TARGET_PATH=$target_path
5500 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5501 CFLAGS-ffplay=$sdl_cflags
5502 ZLIB=$($ldflags_filter -lz)
5503 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5504 EXTRALIBS=$extralibs
5505 COMPAT_OBJS=$compat_objs
5506 EXEOBJS=$exeobjs
5507 INSTALL=$install
5508 LIBTARGET=${LIBTARGET}
5509 SLIBNAME=${SLIBNAME}
5510 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5511 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5512 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5513 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5514 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5515 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5516 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5517 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5518 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5519 NOREDZONE_FLAGS=$noredzone_flags
5520 EOF
5521
5522 get_version(){
5523     lcname=lib${1}
5524     name=$(toupper $lcname)
5525     file=$source_path/$lcname/version.h
5526     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5527     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5528     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5529     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5530     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5531     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5532 }
5533
5534 map 'get_version $v' $LIBRARY_LIST
5535
5536 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5537
5538 print_program_libs(){
5539     eval "program_libs=\$${1}_libs"
5540     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5541 }
5542
5543 map 'print_program_libs $v' $PROGRAM_LIST
5544
5545 cat > $TMPH <<EOF
5546 /* Automatically generated by configure - do not modify! */
5547 #ifndef FFMPEG_CONFIG_H
5548 #define FFMPEG_CONFIG_H
5549 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5550 #define FFMPEG_LICENSE "$(c_escape $license)"
5551 #define CONFIG_THIS_YEAR 2014
5552 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5553 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5554 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5555 #define av_restrict $_restrict
5556 #define EXTERN_PREFIX "${extern_prefix}"
5557 #define EXTERN_ASM ${extern_prefix}
5558 #define BUILDSUF "$build_suffix"
5559 #define SLIBSUF "$SLIBSUF"
5560 #define HAVE_MMX2 HAVE_MMXEXT
5561 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5562 EOF
5563
5564 test -n "$assert_level" &&
5565     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5566
5567 test -n "$malloc_prefix" &&
5568     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5569
5570 if enabled yasm; then
5571     append config_files $TMPASM
5572     printf '' >$TMPASM
5573 fi
5574
5575 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5576
5577
5578 mkdir -p doc
5579 echo "@c auto-generated by configure" > doc/config.texi
5580
5581 print_config ARCH_   "$config_files" $ARCH_LIST
5582 print_config HAVE_   "$config_files" $HAVE_LIST
5583 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5584                                      $CONFIG_EXTRA      \
5585                                      $ALL_COMPONENTS    \
5586
5587 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5588 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5589
5590 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5591 cp_if_changed $TMPH config.h
5592 touch .config
5593
5594 enabled yasm && cp_if_changed $TMPASM config.asm
5595
5596 cat > $TMPH <<EOF
5597 /* Generated by ffconf */
5598 #ifndef AVUTIL_AVCONFIG_H
5599 #define AVUTIL_AVCONFIG_H
5600 EOF
5601
5602 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5603
5604 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5605
5606 cp_if_changed $TMPH libavutil/avconfig.h
5607
5608 if test -n "$WARNINGS"; then
5609     printf "\n$WARNINGS"
5610     enabled fatal_warnings && exit 1
5611 fi
5612
5613 # build pkg-config files
5614
5615 lib_version(){
5616     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5617 }
5618
5619 pkgconfig_generate(){
5620     name=$1
5621     shortname=${name#lib}${build_suffix}
5622     comment=$2
5623     version=$3
5624     libs=$4
5625     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5626     requires=${requires%, }
5627     enabled ${name#lib} || return 0
5628     mkdir -p $name
5629     cat <<EOF > $name/$name${build_suffix}.pc
5630 prefix=$prefix
5631 exec_prefix=\${prefix}
5632 libdir=$libdir
5633 includedir=$incdir
5634
5635 Name: $name
5636 Description: $comment
5637 Version: $version
5638 Requires: $(enabled shared || echo $requires)
5639 Requires.private: $(enabled shared && echo $requires)
5640 Conflicts:
5641 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5642 Libs.private: $(enabled shared && echo $libs)
5643 Cflags: -I\${includedir}
5644 EOF
5645
5646 mkdir -p doc/examples/pc-uninstalled
5647 includedir=${source_path}
5648 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5649     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5650 prefix=
5651 exec_prefix=
5652 libdir=\${pcfiledir}/../../../$name
5653 includedir=${includedir}
5654
5655 Name: $name
5656 Description: $comment
5657 Version: $version
5658 Requires: $requires
5659 Conflicts:
5660 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5661 Cflags: -I\${includedir}
5662 EOF
5663 }
5664
5665 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5666 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5667 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5668 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5669 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5670 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5671 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5672 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5673 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"