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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 311   --disable-sndio          disable sndio support [autodetect]
 312   --disable-schannel       disable SChannel SSP, needed for TLS support on
 313                            Windows if openssl and gnutls are not used [autodetect]
 314   --disable-sdl2           disable sdl2 [autodetect]
 315   --disable-securetransport disable Secure Transport, needed for TLS support
 316                            on OSX if openssl and gnutls are not used [autodetect]
 317   --enable-vapoursynth     enable VapourSynth demuxer [no]
 318   --disable-xlib           disable xlib [autodetect]
 319   --disable-zlib           disable zlib [autodetect]
 320
 321   The following libraries provide various hardware acceleration features:
 322   --disable-amf            disable AMF video encoding code [autodetect]
 323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 330   --enable-libdrm          enable DRM code (Linux) [no]
 331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 336   --enable-omx             enable OpenMAX IL code [no]
 337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 343
 344 Toolchain options:
 345   --arch=ARCH              select architecture [$arch]
 346   --cpu=CPU                select the minimum required CPU (affects
 347                            instruction selection, may crash on older CPUs)
 348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 349   --progs-suffix=SUFFIX    program name suffix []
 350   --enable-cross-compile   assume a cross-compiler is used
 351   --sysroot=PATH           root of cross-build tree
 352   --sysinclude=PATH        location of cross-build system headers
 353   --target-os=OS           compiler targets OS [$target_os]
 354   --target-exec=CMD        command to run executables on target
 355   --target-path=DIR        path to view of build directory on target
 356   --target-samples=DIR     path to samples directory on target
 357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 358   --toolchain=NAME         set tool defaults according to NAME
 359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 361                            valgrind-massif, valgrind-memcheck,
 362                            msvc, icl, gcov, llvm-cov, hardened)
 363   --nm=NM                  use nm tool NM [$nm_default]
 364   --ar=AR                  use archive tool AR [$ar_default]
 365   --as=AS                  use assembler AS [$as_default]
 366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 367   --strip=STRIP            use strip tool STRIP [$strip_default]
 368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 370   --cc=CC                  use C compiler CC [$cc_default]
 371   --cxx=CXX                use C compiler CXX [$cxx_default]
 372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 375   --ld=LD                  use linker LD [$ld_default]
 376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 380   --host-cc=HOSTCC         use host C compiler HOSTCC
 381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 383   --host-ld=HOSTLD         use host linker HOSTLD
 384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 386   --host-os=OS             compiler host OS [$target_os]
 387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 394   --extra-version=STRING   version string suffix []
 395   --optflags=OPTFLAGS      override optimization-related compiler flags
 396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 397   --build-suffix=SUFFIX    library name suffix []
 398   --enable-pic             build position-independent code
 399   --enable-thumb           compile for Thumb instruction set
 400   --enable-lto             use link-time optimization
 401   --env="ENV=override"     override the environment variables
 402
 403 Advanced options (experts only):
 404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 405   --custom-allocator=NAME  use a supported custom allocator
 406   --disable-symver         disable symbol versioning
 407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 408   --disable-safe-bitstream-reader
 409                            disable buffer boundary checking in bitreaders
 410                            (faster, but may crash)
 411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 412
 413 Optimization options (experts only):
 414   --disable-asm            disable all assembly optimizations
 415   --disable-altivec        disable AltiVec optimizations
 416   --disable-vsx            disable VSX optimizations
 417   --disable-power8         disable POWER8 optimizations
 418   --disable-amd3dnow       disable 3DNow! optimizations
 419   --disable-amd3dnowext    disable 3DNow! extended optimizations
 420   --disable-mmx            disable MMX optimizations
 421   --disable-mmxext         disable MMXEXT optimizations
 422   --disable-sse            disable SSE optimizations
 423   --disable-sse2           disable SSE2 optimizations
 424   --disable-sse3           disable SSE3 optimizations
 425   --disable-ssse3          disable SSSE3 optimizations
 426   --disable-sse4           disable SSE4 optimizations
 427   --disable-sse42          disable SSE4.2 optimizations
 428   --disable-avx            disable AVX optimizations
 429   --disable-xop            disable XOP optimizations
 430   --disable-fma3           disable FMA3 optimizations
 431   --disable-fma4           disable FMA4 optimizations
 432   --disable-avx2           disable AVX2 optimizations
 433   --disable-avx512         disable AVX-512 optimizations
 434   --disable-aesni          disable AESNI optimizations
 435   --disable-armv5te        disable armv5te optimizations
 436   --disable-armv6          disable armv6 optimizations
 437   --disable-armv6t2        disable armv6t2 optimizations
 438   --disable-vfp            disable VFP optimizations
 439   --disable-neon           disable NEON optimizations
 440   --disable-inline-asm     disable use of inline assembly
 441   --disable-x86asm         disable use of standalone x86 assembly
 442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 444   --disable-msa            disable MSA optimizations
 445   --disable-msa2           disable MSA2 optimizations
 446   --disable-mipsfpu        disable floating point MIPS optimizations
 447   --disable-mmi            disable Loongson SIMD optimizations
 448   --disable-fast-unaligned consider unaligned accesses slow
 449
 450 Developer options (useful when working on FFmpeg itself):
 451   --disable-debug          disable debugging symbols
 452   --enable-debug=LEVEL     set the debug level [$debuglevel]
 453   --disable-optimizations  disable compiler optimizations
 454   --enable-extra-warnings  enable more compiler warnings
 455   --disable-stripping      disable stripping of executables and shared libraries
 456   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 457                            2 causes a slowdown at runtime.
 458   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 459   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 460                            leaks and errors, using the specified valgrind binary.
 461                            Cannot be combined with --target-exec
 462   --enable-ftrapv          Trap arithmetic overflows
 463   --samples=PATH           location of test samples for FATE, if not set use
 464                            \$FATE_SAMPLES at make invocation time.
 465   --enable-neon-clobber-test check NEON registers for clobbering (should be
 466                            used only for debugging purposes)
 467   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 468                            should be used only for debugging purposes)
 469   --enable-random          randomly enable/disable components
 470   --disable-random
 471   --enable-random=LIST     randomly enable/disable specific components or
 472   --disable-random=LIST    component groups. LIST is a comma-separated list
 473                            of NAME[:PROB] entries where NAME is a component
 474                            (group) and PROB the probability associated with
 475                            NAME (default 0.5).
 476   --random-seed=VALUE      seed value for --enable/disable-random
 477   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 478                            (only applies to --disable-optimizations builds)
 479   --enable-ossfuzz         Enable building fuzzer tool
 480   --libfuzzer=PATH         path to libfuzzer
 481   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 482                            in the name) of tests whose result is ignored
 483   --enable-linux-perf      enable Linux Performance Monitor API
 484
 485 NOTE: Object files are built at the place where configure is launched.
 486 EOF
 487   exit 0
 488 }
 489
 490 if test -t 1 && which tput >/dev/null 2>&1; then
 491     ncolors=$(tput colors)
 492     if test -n "$ncolors" && test $ncolors -ge 8; then
 493         bold_color=$(tput bold)
 494         warn_color=$(tput setaf 3)
 495         error_color=$(tput setaf 1)
 496         reset_color=$(tput sgr0)
 497     fi
 498     # 72 used instead of 80 since that's the default of pr
 499     ncols=$(tput cols)
 500 fi
 501 : ${ncols:=72}
 502
 503 log(){
 504     echo "$@" >> $logfile
 505 }
 506
 507 log_file(){
 508     log BEGIN "$1"
 509     log_file_i=1
 510     while IFS= read -r log_file_line; do
 511         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 512         log_file_i=$(($log_file_i+1))
 513     done < "$1" >> "$logfile"
 514     log END "$1"
 515 }
 516
 517 warn(){
 518     log "WARNING: $*"
 519     WARNINGS="${WARNINGS}WARNING: $*\n"
 520 }
 521
 522 die(){
 523     log "$@"
 524     echo "$error_color$bold_color$@$reset_color"
 525     cat <<EOF
 526
 527 If you think configure made a mistake, make sure you are using the latest
 528 version from Git.  If the latest version fails, report the problem to the
 529 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 530 EOF
 531     if disabled logging; then
 532         cat <<EOF
 533 Rerun configure with logging enabled (do not use --disable-logging), and
 534 include the log this produces with your report.
 535 EOF
 536     else
 537         cat <<EOF
 538 Include the log file "$logfile" produced by configure as this will help
 539 solve the problem.
 540 EOF
 541     fi
 542     exit 1
 543 }
 544
 545 # Avoid locale weirdness, besides we really just want to translate ASCII.
 546 toupper(){
 547     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 548 }
 549
 550 tolower(){
 551     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 552 }
 553
 554 c_escape(){
 555     echo "$*" | sed 's/["\\]/\\\0/g'
 556 }
 557
 558 sh_quote(){
 559     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 560     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 561     echo "$v"
 562 }
 563
 564 cleanws(){
 565     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 566 }
 567
 568 filter(){
 569     pat=$1
 570     shift
 571     for v; do
 572         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 573     done
 574 }
 575
 576 filter_out(){
 577     pat=$1
 578     shift
 579     for v; do
 580         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 581     done
 582 }
 583
 584 map(){
 585     m=$1
 586     shift
 587     for v; do eval $m; done
 588 }
 589
 590 add_suffix(){
 591     suffix=$1
 592     shift
 593     for v; do echo ${v}${suffix}; done
 594 }
 595
 596 remove_suffix(){
 597     suffix=$1
 598     shift
 599     for v; do echo ${v%$suffix}; done
 600 }
 601
 602 set_all(){
 603     value=$1
 604     shift
 605     for var in $*; do
 606         eval $var=$value
 607     done
 608 }
 609
 610 set_weak(){
 611     value=$1
 612     shift
 613     for var; do
 614         eval : \${$var:=$value}
 615     done
 616 }
 617
 618 sanitize_var_name(){
 619     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 620 }
 621
 622 set_sanitized(){
 623     var=$1
 624     shift
 625     eval $(sanitize_var_name "$var")='$*'
 626 }
 627
 628 get_sanitized(){
 629     eval echo \$$(sanitize_var_name "$1")
 630 }
 631
 632 pushvar(){
 633     for pvar in $*; do
 634         eval level=\${${pvar}_level:=0}
 635         eval ${pvar}_${level}="\$$pvar"
 636         eval ${pvar}_level=$(($level+1))
 637     done
 638 }
 639
 640 popvar(){
 641     for pvar in $*; do
 642         eval level=\${${pvar}_level:-0}
 643         test $level = 0 && continue
 644         eval level=$(($level-1))
 645         eval $pvar="\${${pvar}_${level}}"
 646         eval ${pvar}_level=$level
 647         eval unset ${pvar}_${level}
 648     done
 649 }
 650
 651 request(){
 652     for var in $*; do
 653         eval ${var}_requested=yes
 654         eval $var=
 655     done
 656 }
 657
 658 warn_if_gets_disabled(){
 659     for var in $*; do
 660         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 661     done
 662 }
 663
 664 enable(){
 665     set_all yes $*
 666 }
 667
 668 disable(){
 669     set_all no $*
 670 }
 671
 672 disable_with_reason(){
 673     disable $1
 674     eval "${1}_disable_reason=\"$2\""
 675     if requested $1; then
 676         die "ERROR: $1 requested, but $2"
 677     fi
 678 }
 679
 680 enable_weak(){
 681     set_weak yes $*
 682 }
 683
 684 disable_weak(){
 685     set_weak no $*
 686 }
 687
 688 enable_sanitized(){
 689     for var; do
 690         enable $(sanitize_var_name $var)
 691     done
 692 }
 693
 694 disable_sanitized(){
 695     for var; do
 696         disable $(sanitize_var_name $var)
 697     done
 698 }
 699
 700 do_enable_deep(){
 701     for var; do
 702         enabled $var && continue
 703         set -- $var
 704         eval enable_deep \$${var}_select
 705         var=$1
 706         eval enable_deep_weak \$${var}_suggest
 707     done
 708 }
 709
 710 enable_deep(){
 711     do_enable_deep $*
 712     enable $*
 713 }
 714
 715 enable_deep_weak(){
 716     for var; do
 717         disabled $var && continue
 718         set -- $var
 719         do_enable_deep $var
 720         var=$1
 721         enable_weak $var
 722     done
 723 }
 724
 725 requested(){
 726     test "${1#!}" = "$1" && op="=" || op="!="
 727     eval test "x\$${1#!}_requested" $op "xyes"
 728 }
 729
 730 enabled(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}" $op "xyes"
 733 }
 734
 735 disabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xno"
 738 }
 739
 740 enabled_all(){
 741     for opt; do
 742         enabled $opt || return 1
 743     done
 744 }
 745
 746 disabled_all(){
 747     for opt; do
 748         disabled $opt || return 1
 749     done
 750 }
 751
 752 enabled_any(){
 753     for opt; do
 754         enabled $opt && return 0
 755     done
 756 }
 757
 758 disabled_any(){
 759     for opt; do
 760         disabled $opt && return 0
 761     done
 762     return 1
 763 }
 764
 765 set_default(){
 766     for opt; do
 767         eval : \${$opt:=\$${opt}_default}
 768     done
 769 }
 770
 771 is_in(){
 772     value=$1
 773     shift
 774     for var in $*; do
 775         [ $var = $value ] && return 0
 776     done
 777     return 1
 778 }
 779
 780 # The cfg loop is very hot (several thousands iterations), and in bash also
 781 # potentialy quite slow. Try to abort the iterations early, preferably without
 782 # calling functions. 70%+ of the time cfg is already done or without deps.
 783 check_deps(){
 784     for cfg; do
 785         eval [ x\$${cfg}_checking = xdone ] && continue
 786         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 787
 788         eval "
 789         dep_all=\$${cfg}_deps
 790         dep_any=\$${cfg}_deps_any
 791         dep_con=\$${cfg}_conflict
 792         dep_sel=\$${cfg}_select
 793         dep_sgs=\$${cfg}_suggest
 794         dep_ifa=\$${cfg}_if
 795         dep_ifn=\$${cfg}_if_any
 796         "
 797
 798         # most of the time here $cfg has no deps - avoid costly no-op work
 799         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 800             eval ${cfg}_checking=inprogress
 801
 802             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 803             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 804             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 805
 806             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 807             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 808             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 809             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 810             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 811             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 812
 813             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 814
 815             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 816                 # filter out library deps, these do not belong in extralibs
 817                 is_in $dep $LIBRARY_LIST && continue
 818                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 819             done
 820         fi
 821
 822         eval ${cfg}_checking=done
 823     done
 824 }
 825
 826 print_config(){
 827     pfx=$1
 828     files=$2
 829     shift 2
 830     map 'eval echo "$v \${$v:-no}"' "$@" |
 831     awk "BEGIN { split(\"$files\", files) }
 832         {
 833             c = \"$pfx\" toupper(\$1);
 834             v = \$2;
 835             sub(/yes/, 1, v);
 836             sub(/no/,  0, v);
 837             for (f in files) {
 838                 file = files[f];
 839                 if (file ~ /\\.h\$/) {
 840                     printf(\"#define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.asm\$/) {
 842                     printf(\"%%define %s %d\\n\", c, v) >>file;
 843                 } else if (file ~ /\\.mak\$/) {
 844                     n = -v ? \"\" : \"!\";
 845                     printf(\"%s%s=yes\\n\", n, c) >>file;
 846                 } else if (file ~ /\\.texi\$/) {
 847                     pre = -v ? \"\" : \"@c \";
 848                     yesno = \$2;
 849                     c2 = tolower(c);
 850                     gsub(/_/, \"-\", c2);
 851                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 852                 }
 853             }
 854         }"
 855 }
 856
 857 print_enabled(){
 858     suf=$1
 859     shift
 860     for v; do
 861         enabled $v && printf "%s\n" ${v%$suf}
 862     done
 863 }
 864
 865 append(){
 866     var=$1
 867     shift
 868     eval "$var=\"\$$var $*\""
 869 }
 870
 871 prepend(){
 872     var=$1
 873     shift
 874     eval "$var=\"$* \$$var\""
 875 }
 876
 877 reverse () {
 878     eval '
 879         reverse_out=
 880         for v in $'$1'; do
 881             reverse_out="$v $reverse_out"
 882         done
 883         '$1'=$reverse_out
 884     '
 885 }
 886
 887 # keeps the last occurence of each non-unique item
 888 unique(){
 889     unique_out=
 890     eval unique_in=\$$1
 891     reverse unique_in
 892     for v in $unique_in; do
 893         # " $unique_out" +space such that every item is surrounded with spaces
 894         case " $unique_out" in *" $v "*) continue; esac  # already in list
 895         unique_out="$unique_out$v "
 896     done
 897     reverse unique_out
 898     eval $1=\$unique_out
 899 }
 900
 901 resolve(){
 902     resolve_out=
 903     eval resolve_in=\$$1
 904     for v in $resolve_in; do
 905         eval 'resolve_out="$resolve_out$'$v' "'
 906     done
 907     eval $1=\$resolve_out
 908 }
 909
 910 add_cppflags(){
 911     append CPPFLAGS "$@"
 912 }
 913
 914 add_cflags(){
 915     append CFLAGS $($cflags_filter "$@")
 916 }
 917
 918 add_cflags_headers(){
 919     append CFLAGS_HEADERS $($cflags_filter "$@")
 920 }
 921
 922 add_cxxflags(){
 923     append CXXFLAGS $($cflags_filter "$@")
 924 }
 925
 926 add_objcflags(){
 927     append OBJCFLAGS $($objcflags_filter "$@")
 928 }
 929
 930 add_asflags(){
 931     append ASFLAGS $($asflags_filter "$@")
 932 }
 933
 934 add_ldflags(){
 935     append LDFLAGS $($ldflags_filter "$@")
 936 }
 937
 938 add_ldexeflags(){
 939     append LDEXEFLAGS $($ldflags_filter "$@")
 940 }
 941
 942 add_ldsoflags(){
 943     append LDSOFLAGS $($ldflags_filter "$@")
 944 }
 945
 946 add_extralibs(){
 947     prepend extralibs $($ldflags_filter "$@")
 948 }
 949
 950 add_stripflags(){
 951     append ASMSTRIPFLAGS "$@"
 952 }
 953
 954 add_host_cppflags(){
 955     append host_cppflags "$@"
 956 }
 957
 958 add_host_cflags(){
 959     append host_cflags $($host_cflags_filter "$@")
 960 }
 961
 962 add_host_ldflags(){
 963     append host_ldflags $($host_ldflags_filter "$@")
 964 }
 965
 966 add_compat(){
 967     append compat_objs $1
 968     shift
 969     map 'add_cppflags -D$v' "$@"
 970 }
 971
 972 test_cmd(){
 973     log "$@"
 974     "$@" >> $logfile 2>&1
 975 }
 976
 977 test_stat(){
 978     log test_stat "$@"
 979     stat "$1" >> $logfile 2>&1
 980 }
 981
 982 cc_e(){
 983     eval printf '%s\\n' $CC_E
 984 }
 985
 986 cc_o(){
 987     eval printf '%s\\n' $CC_O
 988 }
 989
 990 as_o(){
 991     eval printf '%s\\n' $AS_O
 992 }
 993
 994 x86asm_o(){
 995     eval printf '%s\\n' $X86ASM_O
 996 }
 997
 998 ld_o(){
 999     eval printf '%s\\n' $LD_O
1000 }
1001
1002 hostcc_e(){
1003     eval printf '%s\\n' $HOSTCC_E
1004 }
1005
1006 hostcc_o(){
1007     eval printf '%s\\n' $HOSTCC_O
1008 }
1009
1010 nvcc_o(){
1011     eval printf '%s\\n' $NVCC_O
1012 }
1013
1014 test_cc(){
1015     log test_cc "$@"
1016     cat > $TMPC
1017     log_file $TMPC
1018     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1019 }
1020
1021 test_cxx(){
1022     log test_cxx "$@"
1023     cat > $TMPCPP
1024     log_file $TMPCPP
1025     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1026 }
1027
1028 test_objcc(){
1029     log test_objcc "$@"
1030     cat > $TMPM
1031     log_file $TMPM
1032     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1033 }
1034
1035 test_nvcc(){
1036     log test_nvcc "$@"
1037     cat > $TMPCU
1038     log_file $TMPCU
1039     tmpcu_=$TMPCU
1040     tmpo_=$TMPO
1041     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1042     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1043 }
1044
1045 check_nvcc() {
1046     log check_nvcc "$@"
1047     name=$1
1048     shift 1
1049     disabled $name && return
1050     disable $name
1051     test_nvcc "$@" <<EOF && enable $name
1052 extern "C" {
1053     __global__ void hello(unsigned char *data) {}
1054 }
1055 EOF
1056 }
1057
1058 test_cpp(){
1059     log test_cpp "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1063 }
1064
1065 test_as(){
1066     log test_as "$@"
1067     cat > $TMPS
1068     log_file $TMPS
1069     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1070 }
1071
1072 test_x86asm(){
1073     log test_x86asm "$@"
1074     echo "$1" > $TMPASM
1075     log_file $TMPASM
1076     shift
1077     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1078 }
1079
1080 check_cmd(){
1081     log check_cmd "$@"
1082     cmd=$1
1083     disabled $cmd && return
1084     disable $cmd
1085     test_cmd $@ && enable $cmd
1086 }
1087
1088 check_as(){
1089     log check_as "$@"
1090     name=$1
1091     code=$2
1092     shift 2
1093     disable $name
1094     test_as $@ <<EOF && enable $name
1095 $code
1096 EOF
1097 }
1098
1099 check_inline_asm(){
1100     log check_inline_asm "$@"
1101     name="$1"
1102     code="$2"
1103     shift 2
1104     disable $name
1105     test_cc "$@" <<EOF && enable $name
1106 void foo(void){ __asm__ volatile($code); }
1107 EOF
1108 }
1109
1110 check_inline_asm_flags(){
1111     log check_inline_asm_flags "$@"
1112     name="$1"
1113     code="$2"
1114     flags=''
1115     shift 2
1116     while [ "$1" != "" ]; do
1117       append flags $1
1118       shift
1119     done;
1120     disable $name
1121     cat > $TMPC <<EOF
1122 void foo(void){ __asm__ volatile($code); }
1123 EOF
1124     log_file $TMPC
1125     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1126     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1127 }
1128
1129 check_insn(){
1130     log check_insn "$@"
1131     check_inline_asm ${1}_inline "\"$2\""
1132     check_as ${1}_external "$2"
1133 }
1134
1135 check_x86asm(){
1136     log check_x86asm "$@"
1137     name=$1
1138     shift
1139     disable $name
1140     test_x86asm "$@" && enable $name
1141 }
1142
1143 test_ld(){
1144     log test_ld "$@"
1145     type=$1
1146     shift 1
1147     flags=$(filter_out '-l*|*.so' $@)
1148     libs=$(filter '-l*|*.so' $@)
1149     test_$type $($cflags_filter $flags) || return
1150     flags=$($ldflags_filter $flags)
1151     libs=$($ldflags_filter $libs)
1152     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1153 }
1154
1155 check_ld(){
1156     log check_ld "$@"
1157     type=$1
1158     name=$2
1159     shift 2
1160     disable $name
1161     test_ld $type $@ && enable $name
1162 }
1163
1164 print_include(){
1165     hdr=$1
1166     test "${hdr%.h}" = "${hdr}" &&
1167         echo "#include $hdr"    ||
1168         echo "#include <$hdr>"
1169 }
1170
1171 test_code(){
1172     log test_code "$@"
1173     check=$1
1174     headers=$2
1175     code=$3
1176     shift 3
1177     {
1178         for hdr in $headers; do
1179             print_include $hdr
1180         done
1181         echo "int main(void) { $code; return 0; }"
1182     } | test_$check "$@"
1183 }
1184
1185 check_cppflags(){
1186     log check_cppflags "$@"
1187     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1188 #include <stdlib.h>
1189 EOF
1190 }
1191
1192 test_cflags(){
1193     log test_cflags "$@"
1194     set -- $($cflags_filter "$@")
1195     test_cc "$@" <<EOF
1196 int x;
1197 EOF
1198 }
1199
1200 check_cflags(){
1201     log check_cflags "$@"
1202     test_cflags "$@" && add_cflags "$@"
1203 }
1204
1205 check_cxxflags(){
1206     log check_cxxflags "$@"
1207     set -- $($cflags_filter "$@")
1208     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 test_objcflags(){
1214     log test_objcflags "$@"
1215     set -- $($objcflags_filter "$@")
1216     test_objcc "$@" <<EOF
1217 int x;
1218 EOF
1219 }
1220
1221 check_objcflags(){
1222     log check_objcflags "$@"
1223     test_objcflags "$@" && add_objcflags "$@"
1224 }
1225
1226 test_ldflags(){
1227     log test_ldflags "$@"
1228     set -- $($ldflags_filter "$@")
1229     test_ld "cc" "$@" <<EOF
1230 int main(void){ return 0; }
1231 EOF
1232 }
1233
1234 check_ldflags(){
1235     log check_ldflags "$@"
1236     test_ldflags "$@" && add_ldflags "$@"
1237 }
1238
1239 test_stripflags(){
1240     log test_stripflags "$@"
1241     # call test_cc to get a fresh TMPO
1242     test_cc <<EOF
1243 int main(void) { return 0; }
1244 EOF
1245     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1246 }
1247
1248 check_stripflags(){
1249     log check_stripflags "$@"
1250     test_stripflags "$@" && add_stripflags "$@"
1251 }
1252
1253 check_headers(){
1254     log check_headers "$@"
1255     headers=$1
1256     shift
1257     disable_sanitized $headers
1258     {
1259         for hdr in $headers; do
1260             print_include $hdr
1261         done
1262         echo "int x;"
1263     } | test_cpp "$@" && enable_sanitized $headers
1264 }
1265
1266 check_header_objcc(){
1267     log check_header_objcc "$@"
1268     rm -f -- "$TMPO"
1269     header=$1
1270     shift
1271     disable_sanitized $header
1272     {
1273        echo "#include <$header>"
1274        echo "int main(void) { return 0; }"
1275     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1276 }
1277
1278 check_apple_framework(){
1279     log check_apple_framework "$@"
1280     framework="$1"
1281     name="$(tolower $framework)"
1282     header="${framework}/${framework}.h"
1283     disable $name
1284     check_header_objcc $header &&
1285         enable $name && eval ${name}_extralibs='"-framework $framework"'
1286 }
1287
1288 check_func(){
1289     log check_func "$@"
1290     func=$1
1291     shift
1292     disable $func
1293     test_ld "cc" "$@" <<EOF && enable $func
1294 extern int $func();
1295 int main(void){ $func(); }
1296 EOF
1297 }
1298
1299 check_complexfunc(){
1300     log check_complexfunc "$@"
1301     func=$1
1302     narg=$2
1303     shift 2
1304     test $narg = 2 && args="f, g" || args="f * I"
1305     disable $func
1306     test_ld "cc" "$@" <<EOF && enable $func
1307 #include <complex.h>
1308 #include <math.h>
1309 float foo(complex float f, complex float g) { return $func($args); }
1310 int main(void){ return (int) foo; }
1311 EOF
1312 }
1313
1314 check_mathfunc(){
1315     log check_mathfunc "$@"
1316     func=$1
1317     narg=$2
1318     shift 2
1319     test $narg = 2 && args="f, g" || args="f"
1320     disable $func
1321     test_ld "cc" "$@" <<EOF && enable $func
1322 #include <math.h>
1323 float foo(float f, float g) { return $func($args); }
1324 int main(void){ return (int) foo; }
1325 EOF
1326 }
1327
1328 check_func_headers(){
1329     log check_func_headers "$@"
1330     headers=$1
1331     funcs=$2
1332     shift 2
1333     {
1334         for hdr in $headers; do
1335             print_include $hdr
1336         done
1337         echo "#include <stdint.h>"
1338         for func in $funcs; do
1339             echo "long check_$func(void) { return (long) $func; }"
1340         done
1341         echo "int main(void) { int ret = 0;"
1342         # LTO could optimize out the test functions without this
1343         for func in $funcs; do
1344             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1345         done
1346         echo "return ret; }"
1347     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1348 }
1349
1350 check_class_headers_cpp(){
1351     log check_class_headers_cpp "$@"
1352     headers=$1
1353     classes=$2
1354     shift 2
1355     {
1356         for hdr in $headers; do
1357             echo "#include <$hdr>"
1358         done
1359         echo "int main(void) { "
1360         i=1
1361         for class in $classes; do
1362             echo "$class obj$i;"
1363             i=$(expr $i + 1)
1364         done
1365         echo "return 0; }"
1366     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1367 }
1368
1369 test_cpp_condition(){
1370     log test_cpp_condition "$@"
1371     header=$1
1372     condition=$2
1373     shift 2
1374     test_cpp "$@" <<EOF
1375 #include <$header>
1376 #if !($condition)
1377 #error "unsatisfied condition: $condition"
1378 #endif
1379 EOF
1380 }
1381
1382 check_cpp_condition(){
1383     log check_cpp_condition "$@"
1384     name=$1
1385     shift 1
1386     disable $name
1387     test_cpp_condition "$@" && enable $name
1388 }
1389
1390 test_cflags_cc(){
1391     log test_cflags_cc "$@"
1392     flags=$1
1393     header=$2
1394     condition=$3
1395     shift 3
1396     set -- $($cflags_filter "$flags")
1397     test_cc "$@" <<EOF
1398 #include <$header>
1399 #if !($condition)
1400 #error "unsatisfied condition: $condition"
1401 #endif
1402 EOF
1403 }
1404
1405 check_lib(){
1406     log check_lib "$@"
1407     name="$1"
1408     headers="$2"
1409     funcs="$3"
1410     shift 3
1411     disable $name
1412     check_func_headers "$headers" "$funcs" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 check_lib_cpp(){
1417     log check_lib_cpp "$@"
1418     name="$1"
1419     headers="$2"
1420     classes="$3"
1421     shift 3
1422     disable $name
1423     check_class_headers_cpp "$headers" "$classes" "$@" &&
1424         enable $name && eval ${name}_extralibs="\$@"
1425 }
1426
1427 test_pkg_config(){
1428     log test_pkg_config "$@"
1429     name="$1"
1430     pkg_version="$2"
1431     pkg="${2%% *}"
1432     headers="$3"
1433     funcs="$4"
1434     shift 4
1435     disable $name
1436     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1437     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1438     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1439     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1440         enable $name &&
1441         set_sanitized "${name}_cflags"    $pkg_cflags &&
1442         set_sanitized "${name}_extralibs" $pkg_libs
1443 }
1444
1445 check_pkg_config(){
1446     log check_pkg_config "$@"
1447     name="$1"
1448     test_pkg_config "$@" &&
1449         eval add_cflags \$${name}_cflags
1450 }
1451
1452 test_exec(){
1453     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1454 }
1455
1456 check_exec_crash(){
1457     log check_exec_crash "$@"
1458     code=$(cat)
1459
1460     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1461     # are safe but may not be available everywhere.  Thus we use
1462     # raise(SIGTERM) instead.  The check is run in a subshell so we
1463     # can redirect the "Terminated" message from the shell.  SIGBUS
1464     # is not defined by standard C so it is used conditionally.
1465
1466     (test_exec "$@") >> $logfile 2>&1 <<EOF
1467 #include <signal.h>
1468 static void sighandler(int sig){
1469     raise(SIGTERM);
1470 }
1471 int foo(void){
1472     $code
1473 }
1474 int (*func_ptr)(void) = foo;
1475 int main(void){
1476     signal(SIGILL, sighandler);
1477     signal(SIGFPE, sighandler);
1478     signal(SIGSEGV, sighandler);
1479 #ifdef SIGBUS
1480     signal(SIGBUS, sighandler);
1481 #endif
1482     return func_ptr();
1483 }
1484 EOF
1485 }
1486
1487 check_type(){
1488     log check_type "$@"
1489     headers=$1
1490     type=$2
1491     shift 2
1492     disable_sanitized "$type"
1493     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1494 }
1495
1496 check_struct(){
1497     log check_struct "$@"
1498     headers=$1
1499     struct=$2
1500     member=$3
1501     shift 3
1502     disable_sanitized "${struct}_${member}"
1503     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1504         enable_sanitized "${struct}_${member}"
1505 }
1506
1507 check_builtin(){
1508     log check_builtin "$@"
1509     name=$1
1510     headers=$2
1511     builtin=$3
1512     shift 3
1513     disable "$name"
1514     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1515 }
1516
1517 check_compile_assert(){
1518     log check_compile_assert "$@"
1519     name=$1
1520     headers=$2
1521     condition=$3
1522     shift 3
1523     disable "$name"
1524     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1525 }
1526
1527 check_cc(){
1528     log check_cc "$@"
1529     name=$1
1530     shift
1531     disable "$name"
1532     test_code cc "$@" && enable "$name"
1533 }
1534
1535 require(){
1536     log require "$@"
1537     name_version="$1"
1538     name="${1%% *}"
1539     shift
1540     check_lib $name "$@" || die "ERROR: $name_version not found"
1541 }
1542
1543 require_cc(){
1544     log require_cc "$@"
1545     name="$1"
1546     check_cc "$@" || die "ERROR: $name failed"
1547 }
1548
1549 require_cpp(){
1550     name="$1"
1551     headers="$2"
1552     classes="$3"
1553     shift 3
1554     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1555 }
1556
1557 require_headers(){
1558     log require_headers "$@"
1559     headers="$1"
1560     check_headers "$@" || die "ERROR: $headers not found"
1561 }
1562
1563 require_cpp_condition(){
1564     log require_cpp_condition "$@"
1565     condition="$3"
1566     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1567 }
1568
1569 require_pkg_config(){
1570     log require_pkg_config "$@"
1571     pkg_version="$2"
1572     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1573 }
1574
1575 test_host_cc(){
1576     log test_host_cc "$@"
1577     cat > $TMPC
1578     log_file $TMPC
1579     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1580 }
1581
1582 test_host_cpp(){
1583     log test_host_cpp "$@"
1584     cat > $TMPC
1585     log_file $TMPC
1586     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1587 }
1588
1589 check_host_cppflags(){
1590     log check_host_cppflags "$@"
1591     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1592 #include <stdlib.h>
1593 EOF
1594 }
1595
1596 check_host_cflags(){
1597     log check_host_cflags "$@"
1598     set -- $($host_cflags_filter "$@")
1599     test_host_cc "$@" <<EOF && append host_cflags "$@"
1600 int x;
1601 EOF
1602 }
1603
1604 test_host_cpp_condition(){
1605     log test_host_cpp_condition "$@"
1606     header=$1
1607     condition=$2
1608     shift 2
1609     test_host_cpp "$@" <<EOF
1610 #include <$header>
1611 #if !($condition)
1612 #error "unsatisfied condition: $condition"
1613 #endif
1614 EOF
1615 }
1616
1617 check_host_cpp_condition(){
1618     log check_host_cpp_condition "$@"
1619     name=$1
1620     shift 1
1621     disable $name
1622     test_host_cpp_condition "$@" && enable $name
1623 }
1624
1625 cp_if_changed(){
1626     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1627     mkdir -p "$(dirname $2)"
1628     cp -f "$1" "$2"
1629 }
1630
1631 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1632 # system-dependent things.
1633
1634 AVCODEC_COMPONENTS="
1635     bsfs
1636     decoders
1637     encoders
1638     hwaccels
1639     parsers
1640 "
1641
1642 AVDEVICE_COMPONENTS="
1643     indevs
1644     outdevs
1645 "
1646
1647 AVFILTER_COMPONENTS="
1648     filters
1649 "
1650
1651 AVFORMAT_COMPONENTS="
1652     demuxers
1653     muxers
1654     protocols
1655 "
1656
1657 COMPONENT_LIST="
1658     $AVCODEC_COMPONENTS
1659     $AVDEVICE_COMPONENTS
1660     $AVFILTER_COMPONENTS
1661     $AVFORMAT_COMPONENTS
1662 "
1663
1664 EXAMPLE_LIST="
1665     avio_dir_cmd_example
1666     avio_reading_example
1667     decode_audio_example
1668     decode_video_example
1669     demuxing_decoding_example
1670     encode_audio_example
1671     encode_video_example
1672     extract_mvs_example
1673     filter_audio_example
1674     filtering_audio_example
1675     filtering_video_example
1676     http_multiclient_example
1677     hw_decode_example
1678     metadata_example
1679     muxing_example
1680     qsvdec_example
1681     remuxing_example
1682     resampling_audio_example
1683     scaling_video_example
1684     transcode_aac_example
1685     transcoding_example
1686     vaapi_encode_example
1687     vaapi_transcode_example
1688 "
1689
1690 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1691     alsa
1692     appkit
1693     avfoundation
1694     bzlib
1695     coreimage
1696     iconv
1697     libxcb
1698     libxcb_shm
1699     libxcb_shape
1700     libxcb_xfixes
1701     lzma
1702     schannel
1703     sdl2
1704     securetransport
1705     sndio
1706     xlib
1707     zlib
1708 "
1709
1710 EXTERNAL_LIBRARY_GPL_LIST="
1711     avisynth
1712     frei0r
1713     libcdio
1714     libdavs2
1715     librubberband
1716     libvidstab
1717     libx264
1718     libx265
1719     libxavs
1720     libxavs2
1721     libxvid
1722 "
1723
1724 EXTERNAL_LIBRARY_NONFREE_LIST="
1725     decklink
1726     libfdk_aac
1727     openssl
1728     libtls
1729 "
1730
1731 EXTERNAL_LIBRARY_VERSION3_LIST="
1732     gmp
1733     libaribb24
1734     liblensfun
1735     libopencore_amrnb
1736     libopencore_amrwb
1737     libvmaf
1738     libvo_amrwbenc
1739     mbedtls
1740     rkmpp
1741 "
1742
1743 EXTERNAL_LIBRARY_GPLV3_LIST="
1744     libsmbclient
1745 "
1746
1747 EXTERNAL_LIBRARY_LIST="
1748     $EXTERNAL_LIBRARY_GPL_LIST
1749     $EXTERNAL_LIBRARY_NONFREE_LIST
1750     $EXTERNAL_LIBRARY_VERSION3_LIST
1751     $EXTERNAL_LIBRARY_GPLV3_LIST
1752     chromaprint
1753     gcrypt
1754     gnutls
1755     jni
1756     ladspa
1757     libaom
1758     libass
1759     libbluray
1760     libbs2b
1761     libcaca
1762     libcelt
1763     libcodec2
1764     libdav1d
1765     libdc1394
1766     libdrm
1767     libflite
1768     libfontconfig
1769     libfreetype
1770     libfribidi
1771     libgme
1772     libgsm
1773     libiec61883
1774     libilbc
1775     libjack
1776     libklvanc
1777     libkvazaar
1778     libmodplug
1779     libmp3lame
1780     libmysofa
1781     libopencv
1782     libopenh264
1783     libopenjpeg
1784     libopenmpt
1785     libopus
1786     libpulse
1787     librsvg
1788     librtmp
1789     libshine
1790     libsmbclient
1791     libsnappy
1792     libsoxr
1793     libspeex
1794     libsrt
1795     libssh
1796     libtensorflow
1797     libtesseract
1798     libtheora
1799     libtwolame
1800     libv4l2
1801     libvorbis
1802     libvpx
1803     libwavpack
1804     libwebp
1805     libxml2
1806     libzimg
1807     libzmq
1808     libzvbi
1809     lv2
1810     mediacodec
1811     openal
1812     opengl
1813     pocketsphinx
1814     vapoursynth
1815 "
1816
1817 HWACCEL_AUTODETECT_LIBRARY_LIST="
1818     amf
1819     audiotoolbox
1820     crystalhd
1821     cuda
1822     cuda_llvm
1823     cuvid
1824     d3d11va
1825     dxva2
1826     ffnvcodec
1827     nvdec
1828     nvenc
1829     vaapi
1830     vdpau
1831     videotoolbox
1832     v4l2_m2m
1833     xvmc
1834 "
1835
1836 # catchall list of things that require external libs to link
1837 EXTRALIBS_LIST="
1838     cpu_init
1839     cws2fws
1840 "
1841
1842 HWACCEL_LIBRARY_NONFREE_LIST="
1843     cuda_nvcc
1844     cuda_sdk
1845     libnpp
1846 "
1847
1848 HWACCEL_LIBRARY_LIST="
1849     $HWACCEL_LIBRARY_NONFREE_LIST
1850     libmfx
1851     mmal
1852     omx
1853     opencl
1854 "
1855
1856 DOCUMENT_LIST="
1857     doc
1858     htmlpages
1859     manpages
1860     podpages
1861     txtpages
1862 "
1863
1864 FEATURE_LIST="
1865     ftrapv
1866     gray
1867     hardcoded_tables
1868     omx_rpi
1869     runtime_cpudetect
1870     safe_bitstream_reader
1871     shared
1872     small
1873     static
1874     swscale_alpha
1875 "
1876
1877 # this list should be kept in linking order
1878 LIBRARY_LIST="
1879     avdevice
1880     avfilter
1881     swscale
1882     postproc
1883     avformat
1884     avcodec
1885     swresample
1886     avresample
1887     avutil
1888 "
1889
1890 LICENSE_LIST="
1891     gpl
1892     nonfree
1893     version3
1894 "
1895
1896 PROGRAM_LIST="
1897     ffplay
1898     ffprobe
1899     ffmpeg
1900 "
1901
1902 SUBSYSTEM_LIST="
1903     dct
1904     dwt
1905     error_resilience
1906     faan
1907     fast_unaligned
1908     fft
1909     lsp
1910     lzo
1911     mdct
1912     pixelutils
1913     network
1914     rdft
1915 "
1916
1917 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1918 CONFIG_LIST="
1919     $DOCUMENT_LIST
1920     $EXAMPLE_LIST
1921     $EXTERNAL_LIBRARY_LIST
1922     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1923     $HWACCEL_LIBRARY_LIST
1924     $HWACCEL_AUTODETECT_LIBRARY_LIST
1925     $FEATURE_LIST
1926     $LICENSE_LIST
1927     $LIBRARY_LIST
1928     $PROGRAM_LIST
1929     $SUBSYSTEM_LIST
1930     autodetect
1931     fontconfig
1932     linux_perf
1933     memory_poisoning
1934     neon_clobber_test
1935     ossfuzz
1936     pic
1937     thumb
1938     valgrind_backtrace
1939     xmm_clobber_test
1940     $COMPONENT_LIST
1941 "
1942
1943 THREADS_LIST="
1944     pthreads
1945     os2threads
1946     w32threads
1947 "
1948
1949 ATOMICS_LIST="
1950     atomics_gcc
1951     atomics_suncc
1952     atomics_win32
1953 "
1954
1955 AUTODETECT_LIBS="
1956     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1957     $HWACCEL_AUTODETECT_LIBRARY_LIST
1958     $THREADS_LIST
1959 "
1960
1961 ARCH_LIST="
1962     aarch64
1963     alpha
1964     arm
1965     avr32
1966     avr32_ap
1967     avr32_uc
1968     bfin
1969     ia64
1970     m68k
1971     mips
1972     mips64
1973     parisc
1974     ppc
1975     ppc64
1976     s390
1977     sh4
1978     sparc
1979     sparc64
1980     tilegx
1981     tilepro
1982     tomi
1983     x86
1984     x86_32
1985     x86_64
1986 "
1987
1988 ARCH_EXT_LIST_ARM="
1989     armv5te
1990     armv6
1991     armv6t2
1992     armv8
1993     neon
1994     vfp
1995     vfpv3
1996     setend
1997 "
1998
1999 ARCH_EXT_LIST_MIPS="
2000     mipsfpu
2001     mips32r2
2002     mips32r5
2003     mips64r2
2004     mips32r6
2005     mips64r6
2006     mipsdsp
2007     mipsdspr2
2008     msa
2009     msa2
2010 "
2011
2012 ARCH_EXT_LIST_LOONGSON="
2013     loongson2
2014     loongson3
2015     mmi
2016 "
2017
2018 ARCH_EXT_LIST_X86_SIMD="
2019     aesni
2020     amd3dnow
2021     amd3dnowext
2022     avx
2023     avx2
2024     avx512
2025     fma3
2026     fma4
2027     mmx
2028     mmxext
2029     sse
2030     sse2
2031     sse3
2032     sse4
2033     sse42
2034     ssse3
2035     xop
2036 "
2037
2038 ARCH_EXT_LIST_PPC="
2039     altivec
2040     dcbzl
2041     ldbrx
2042     power8
2043     ppc4xx
2044     vsx
2045 "
2046
2047 ARCH_EXT_LIST_X86="
2048     $ARCH_EXT_LIST_X86_SIMD
2049     cpunop
2050     i686
2051 "
2052
2053 ARCH_EXT_LIST="
2054     $ARCH_EXT_LIST_ARM
2055     $ARCH_EXT_LIST_PPC
2056     $ARCH_EXT_LIST_X86
2057     $ARCH_EXT_LIST_MIPS
2058     $ARCH_EXT_LIST_LOONGSON
2059 "
2060
2061 ARCH_FEATURES="
2062     aligned_stack
2063     fast_64bit
2064     fast_clz
2065     fast_cmov
2066     local_aligned
2067     simd_align_16
2068     simd_align_32
2069     simd_align_64
2070 "
2071
2072 BUILTIN_LIST="
2073     atomic_cas_ptr
2074     machine_rw_barrier
2075     MemoryBarrier
2076     mm_empty
2077     rdtsc
2078     sem_timedwait
2079     sync_val_compare_and_swap
2080 "
2081 HAVE_LIST_CMDLINE="
2082     inline_asm
2083     symver
2084     x86asm
2085 "
2086
2087 HAVE_LIST_PUB="
2088     bigendian
2089     fast_unaligned
2090 "
2091
2092 HEADERS_LIST="
2093     arpa_inet_h
2094     asm_types_h
2095     cdio_paranoia_h
2096     cdio_paranoia_paranoia_h
2097     cuda_h
2098     dispatch_dispatch_h
2099     dev_bktr_ioctl_bt848_h
2100     dev_bktr_ioctl_meteor_h
2101     dev_ic_bt8xx_h
2102     dev_video_bktr_ioctl_bt848_h
2103     dev_video_meteor_ioctl_meteor_h
2104     direct_h
2105     dirent_h
2106     dxgidebug_h
2107     dxva_h
2108     ES2_gl_h
2109     gsm_h
2110     io_h
2111     linux_perf_event_h
2112     machine_ioctl_bt848_h
2113     machine_ioctl_meteor_h
2114     malloc_h
2115     opencv2_core_core_c_h
2116     OpenGL_gl3_h
2117     poll_h
2118     sys_param_h
2119     sys_resource_h
2120     sys_select_h
2121     sys_soundcard_h
2122     sys_time_h
2123     sys_un_h
2124     sys_videoio_h
2125     termios_h
2126     udplite_h
2127     unistd_h
2128     valgrind_valgrind_h
2129     windows_h
2130     winsock2_h
2131 "
2132
2133 INTRINSICS_LIST="
2134     intrinsics_neon
2135 "
2136
2137 COMPLEX_FUNCS="
2138     cabs
2139     cexp
2140 "
2141
2142 MATH_FUNCS="
2143     atanf
2144     atan2f
2145     cbrt
2146     cbrtf
2147     copysign
2148     cosf
2149     erf
2150     exp2
2151     exp2f
2152     expf
2153     hypot
2154     isfinite
2155     isinf
2156     isnan
2157     ldexpf
2158     llrint
2159     llrintf
2160     log2
2161     log2f
2162     log10f
2163     lrint
2164     lrintf
2165     powf
2166     rint
2167     round
2168     roundf
2169     sinf
2170     trunc
2171     truncf
2172 "
2173
2174 SYSTEM_FEATURES="
2175     dos_paths
2176     libc_msvcrt
2177     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2178     section_data_rel_ro
2179     threads
2180     uwp
2181     winrt
2182 "
2183
2184 SYSTEM_FUNCS="
2185     access
2186     aligned_malloc
2187     arc4random
2188     clock_gettime
2189     closesocket
2190     CommandLineToArgvW
2191     fcntl
2192     getaddrinfo
2193     gethrtime
2194     getopt
2195     GetProcessAffinityMask
2196     GetProcessMemoryInfo
2197     GetProcessTimes
2198     getrusage
2199     GetSystemTimeAsFileTime
2200     gettimeofday
2201     glob
2202     glXGetProcAddress
2203     gmtime_r
2204     inet_aton
2205     isatty
2206     kbhit
2207     localtime_r
2208     lstat
2209     lzo1x_999_compress
2210     mach_absolute_time
2211     MapViewOfFile
2212     memalign
2213     mkstemp
2214     mmap
2215     mprotect
2216     nanosleep
2217     PeekNamedPipe
2218     posix_memalign
2219     pthread_cancel
2220     sched_getaffinity
2221     SecItemImport
2222     SetConsoleTextAttribute
2223     SetConsoleCtrlHandler
2224     setmode
2225     setrlimit
2226     Sleep
2227     strerror_r
2228     sysconf
2229     sysctl
2230     usleep
2231     UTGetOSTypeFromString
2232     VirtualAlloc
2233     wglGetProcAddress
2234 "
2235
2236 SYSTEM_LIBRARIES="
2237     bcrypt
2238     vaapi_drm
2239     vaapi_x11
2240     vdpau_x11
2241 "
2242
2243 TOOLCHAIN_FEATURES="
2244     as_arch_directive
2245     as_dn_directive
2246     as_fpu_directive
2247     as_func
2248     as_object_arch
2249     asm_mod_q
2250     blocks_extension
2251     ebp_available
2252     ebx_available
2253     gnu_as
2254     gnu_windres
2255     ibm_asm
2256     inline_asm_direct_symbol_refs
2257     inline_asm_labels
2258     inline_asm_nonlocal_labels
2259     pragma_deprecated
2260     rsync_contimeout
2261     symver_asm_label
2262     symver_gnu_asm
2263     vfp_args
2264     xform_asm
2265     xmm_clobbers
2266 "
2267
2268 TYPES_LIST="
2269     kCMVideoCodecType_HEVC
2270     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2271     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2272     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2273     kCVImageBufferTransferFunction_Linear
2274     socklen_t
2275     struct_addrinfo
2276     struct_group_source_req
2277     struct_ip_mreq_source
2278     struct_ipv6_mreq
2279     struct_msghdr_msg_flags
2280     struct_pollfd
2281     struct_rusage_ru_maxrss
2282     struct_sctp_event_subscribe
2283     struct_sockaddr_in6
2284     struct_sockaddr_sa_len
2285     struct_sockaddr_storage
2286     struct_stat_st_mtim_tv_nsec
2287     struct_v4l2_frmivalenum_discrete
2288 "
2289
2290 HAVE_LIST="
2291     $ARCH_EXT_LIST
2292     $(add_suffix _external $ARCH_EXT_LIST)
2293     $(add_suffix _inline   $ARCH_EXT_LIST)
2294     $ARCH_FEATURES
2295     $BUILTIN_LIST
2296     $COMPLEX_FUNCS
2297     $HAVE_LIST_CMDLINE
2298     $HAVE_LIST_PUB
2299     $HEADERS_LIST
2300     $INTRINSICS_LIST
2301     $MATH_FUNCS
2302     $SYSTEM_FEATURES
2303     $SYSTEM_FUNCS
2304     $SYSTEM_LIBRARIES
2305     $THREADS_LIST
2306     $TOOLCHAIN_FEATURES
2307     $TYPES_LIST
2308     makeinfo
2309     makeinfo_html
2310     opencl_d3d11
2311     opencl_drm_arm
2312     opencl_drm_beignet
2313     opencl_dxva2
2314     opencl_vaapi_beignet
2315     opencl_vaapi_intel_media
2316     perl
2317     pod2man
2318     texi2html
2319 "
2320
2321 # options emitted with CONFIG_ prefix but not available on the command line
2322 CONFIG_EXTRA="
2323     aandcttables
2324     ac3dsp
2325     adts_header
2326     audio_frame_queue
2327     audiodsp
2328     blockdsp
2329     bswapdsp
2330     cabac
2331     cbs
2332     cbs_av1
2333     cbs_h264
2334     cbs_h265
2335     cbs_jpeg
2336     cbs_mpeg2
2337     cbs_vp9
2338     dirac_parse
2339     dnn
2340     dvprofile
2341     exif
2342     faandct
2343     faanidct
2344     fdctdsp
2345     flacdsp
2346     fmtconvert
2347     frame_thread_encoder
2348     g722dsp
2349     golomb
2350     gplv3
2351     h263dsp
2352     h264chroma
2353     h264dsp
2354     h264parse
2355     h264pred
2356     h264qpel
2357     hevcparse
2358     hpeldsp
2359     huffman
2360     huffyuvdsp
2361     huffyuvencdsp
2362     idctdsp
2363     iirfilter
2364     mdct15
2365     intrax8
2366     iso_media
2367     ividsp
2368     jpegtables
2369     lgplv3
2370     libx262
2371     llauddsp
2372     llviddsp
2373     llvidencdsp
2374     lpc
2375     lzf
2376     me_cmp
2377     mpeg_er
2378     mpegaudio
2379     mpegaudiodsp
2380     mpegaudioheader
2381     mpegvideo
2382     mpegvideoenc
2383     mss34dsp
2384     pixblockdsp
2385     qpeldsp
2386     qsv
2387     qsvdec
2388     qsvenc
2389     qsvvpp
2390     rangecoder
2391     riffdec
2392     riffenc
2393     rtpdec
2394     rtpenc_chain
2395     rv34dsp
2396     scene_sad
2397     sinewin
2398     snappy
2399     srtp
2400     startcode
2401     texturedsp
2402     texturedspenc
2403     tpeldsp
2404     vaapi_1
2405     vaapi_encode
2406     vc1dsp
2407     videodsp
2408     vp3dsp
2409     vp56dsp
2410     vp8dsp
2411     wma_freqs
2412     wmv2dsp
2413 "
2414
2415 CMDLINE_SELECT="
2416     $ARCH_EXT_LIST
2417     $CONFIG_LIST
2418     $HAVE_LIST_CMDLINE
2419     $THREADS_LIST
2420     asm
2421     cross_compile
2422     debug
2423     extra_warnings
2424     logging
2425     lto
2426     optimizations
2427     rpath
2428     stripping
2429 "
2430
2431 PATHS_LIST="
2432     bindir
2433     datadir
2434     docdir
2435     incdir
2436     libdir
2437     mandir
2438     pkgconfigdir
2439     prefix
2440     shlibdir
2441     install_name_dir
2442 "
2443
2444 CMDLINE_SET="
2445     $PATHS_LIST
2446     ar
2447     arch
2448     as
2449     assert_level
2450     build_suffix
2451     cc
2452     objcc
2453     cpu
2454     cross_prefix
2455     custom_allocator
2456     cxx
2457     dep_cc
2458     doxygen
2459     env
2460     extra_version
2461     gas
2462     host_cc
2463     host_cflags
2464     host_extralibs
2465     host_ld
2466     host_ldflags
2467     host_os
2468     ignore_tests
2469     install
2470     ld
2471     ln_s
2472     logfile
2473     malloc_prefix
2474     nm
2475     optflags
2476     nvcc
2477     nvccflags
2478     pkg_config
2479     pkg_config_flags
2480     progs_suffix
2481     random_seed
2482     ranlib
2483     samples
2484     strip
2485     sws_max_filter_size
2486     sysinclude
2487     sysroot
2488     target_exec
2489     target_os
2490     target_path
2491     target_samples
2492     tempprefix
2493     toolchain
2494     valgrind
2495     windres
2496     x86asmexe
2497 "
2498
2499 CMDLINE_APPEND="
2500     extra_cflags
2501     extra_cxxflags
2502     extra_objcflags
2503     host_cppflags
2504 "
2505
2506 # code dependency declarations
2507
2508 # architecture extensions
2509
2510 armv5te_deps="arm"
2511 armv6_deps="arm"
2512 armv6t2_deps="arm"
2513 armv8_deps="aarch64"
2514 neon_deps_any="aarch64 arm"
2515 intrinsics_neon_deps="neon"
2516 vfp_deps_any="aarch64 arm"
2517 vfpv3_deps="vfp"
2518 setend_deps="arm"
2519
2520 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2521
2522 altivec_deps="ppc"
2523 dcbzl_deps="ppc"
2524 ldbrx_deps="ppc"
2525 ppc4xx_deps="ppc"
2526 vsx_deps="altivec"
2527 power8_deps="vsx"
2528
2529 loongson2_deps="mips"
2530 loongson3_deps="mips"
2531 mips32r2_deps="mips"
2532 mips32r5_deps="mips"
2533 mips32r6_deps="mips"
2534 mips64r2_deps="mips"
2535 mips64r6_deps="mips"
2536 mipsfpu_deps="mips"
2537 mipsdsp_deps="mips"
2538 mipsdspr2_deps="mips"
2539 mmi_deps="mips"
2540 msa_deps="mipsfpu"
2541 msa2_deps="msa"
2542
2543 cpunop_deps="i686"
2544 x86_64_select="i686"
2545 x86_64_suggest="fast_cmov"
2546
2547 amd3dnow_deps="mmx"
2548 amd3dnowext_deps="amd3dnow"
2549 i686_deps="x86"
2550 mmx_deps="x86"
2551 mmxext_deps="mmx"
2552 sse_deps="mmxext"
2553 sse2_deps="sse"
2554 sse3_deps="sse2"
2555 ssse3_deps="sse3"
2556 sse4_deps="ssse3"
2557 sse42_deps="sse4"
2558 aesni_deps="sse42"
2559 avx_deps="sse42"
2560 xop_deps="avx"
2561 fma3_deps="avx"
2562 fma4_deps="avx"
2563 avx2_deps="avx"
2564 avx512_deps="avx2"
2565
2566 mmx_external_deps="x86asm"
2567 mmx_inline_deps="inline_asm x86"
2568 mmx_suggest="mmx_external mmx_inline"
2569
2570 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2571     eval dep=\$${ext}_deps
2572     eval ${ext}_external_deps='"${dep}_external"'
2573     eval ${ext}_inline_deps='"${dep}_inline"'
2574     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2575 done
2576
2577 aligned_stack_if_any="aarch64 ppc x86"
2578 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2579 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2580 fast_unaligned_if_any="aarch64 ppc x86"
2581 simd_align_16_if_any="altivec neon sse"
2582 simd_align_32_if_any="avx"
2583 simd_align_64_if_any="avx512"
2584
2585 # system capabilities
2586 linux_perf_deps="linux_perf_event_h"
2587 symver_if_any="symver_asm_label symver_gnu_asm"
2588 valgrind_backtrace_conflict="optimizations"
2589 valgrind_backtrace_deps="valgrind_valgrind_h"
2590
2591 # threading support
2592 atomics_gcc_if="sync_val_compare_and_swap"
2593 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2594 atomics_win32_if="MemoryBarrier"
2595 atomics_native_if_any="$ATOMICS_LIST"
2596 w32threads_deps="atomics_native"
2597 threads_if_any="$THREADS_LIST"
2598
2599 # subsystems
2600 cbs_av1_select="cbs"
2601 cbs_h264_select="cbs"
2602 cbs_h265_select="cbs"
2603 cbs_jpeg_select="cbs"
2604 cbs_mpeg2_select="cbs"
2605 cbs_vp9_select="cbs"
2606 dct_select="rdft"
2607 dirac_parse_select="golomb"
2608 dnn_suggest="libtensorflow"
2609 error_resilience_select="me_cmp"
2610 faandct_deps="faan"
2611 faandct_select="fdctdsp"
2612 faanidct_deps="faan"
2613 faanidct_select="idctdsp"
2614 h264dsp_select="startcode"
2615 hevcparse_select="golomb"
2616 frame_thread_encoder_deps="encoders threads"
2617 intrax8_select="blockdsp idctdsp"
2618 mdct_select="fft"
2619 mdct15_select="fft"
2620 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2621 mpeg_er_select="error_resilience"
2622 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2623 mpegaudiodsp_select="dct"
2624 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2625 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2626 vc1dsp_select="h264chroma qpeldsp startcode"
2627 rdft_select="fft"
2628
2629 # decoders / encoders
2630 aac_decoder_select="adts_header mdct15 mdct sinewin"
2631 aac_fixed_decoder_select="adts_header mdct sinewin"
2632 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2633 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2634 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2635 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2636 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2637 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2638 acelp_kelvin_decoder_select="audiodsp"
2639 adpcm_g722_decoder_select="g722dsp"
2640 adpcm_g722_encoder_select="g722dsp"
2641 aic_decoder_select="golomb idctdsp"
2642 alac_encoder_select="lpc"
2643 als_decoder_select="bswapdsp"
2644 amrnb_decoder_select="lsp"
2645 amrwb_decoder_select="lsp"
2646 amv_decoder_select="sp5x_decoder exif"
2647 amv_encoder_select="jpegtables mpegvideoenc"
2648 ape_decoder_select="bswapdsp llauddsp"
2649 apng_decoder_deps="zlib"
2650 apng_encoder_deps="zlib"
2651 apng_encoder_select="llvidencdsp"
2652 aptx_decoder_select="audio_frame_queue"
2653 aptx_encoder_select="audio_frame_queue"
2654 aptx_hd_decoder_select="audio_frame_queue"
2655 aptx_hd_encoder_select="audio_frame_queue"
2656 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2657 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2658 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2659 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2660 atrac1_decoder_select="mdct sinewin"
2661 atrac3_decoder_select="mdct"
2662 atrac3al_decoder_select="mdct"
2663 atrac3p_decoder_select="mdct sinewin"
2664 atrac3pal_decoder_select="mdct sinewin"
2665 atrac9_decoder_select="mdct"
2666 avrn_decoder_select="exif jpegtables"
2667 bink_decoder_select="blockdsp hpeldsp"
2668 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2669 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2670 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2671 clearvideo_decoder_select="idctdsp"
2672 cllc_decoder_select="bswapdsp"
2673 comfortnoise_encoder_select="lpc"
2674 cook_decoder_select="audiodsp mdct sinewin"
2675 cscd_decoder_select="lzo"
2676 cscd_decoder_suggest="zlib"
2677 dca_decoder_select="mdct"
2678 dds_decoder_select="texturedsp"
2679 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2680 dnxhd_decoder_select="blockdsp idctdsp"
2681 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2682 dolby_e_decoder_select="mdct"
2683 dvvideo_decoder_select="dvprofile idctdsp"
2684 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2685 dxa_decoder_deps="zlib"
2686 dxv_decoder_select="lzf texturedsp"
2687 eac3_decoder_select="ac3_decoder"
2688 eac3_encoder_select="ac3_encoder"
2689 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2690 eatgq_decoder_select="aandcttables"
2691 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2692 exr_decoder_deps="zlib"
2693 ffv1_decoder_select="rangecoder"
2694 ffv1_encoder_select="rangecoder"
2695 ffvhuff_decoder_select="huffyuv_decoder"
2696 ffvhuff_encoder_select="huffyuv_encoder"
2697 fic_decoder_select="golomb"
2698 flac_decoder_select="flacdsp"
2699 flac_encoder_select="bswapdsp flacdsp lpc"
2700 flashsv2_decoder_deps="zlib"
2701 flashsv2_encoder_deps="zlib"
2702 flashsv_decoder_deps="zlib"
2703 flashsv_encoder_deps="zlib"
2704 flv_decoder_select="h263_decoder"
2705 flv_encoder_select="h263_encoder"
2706 fourxm_decoder_select="blockdsp bswapdsp"
2707 fraps_decoder_select="bswapdsp huffman"
2708 g2m_decoder_deps="zlib"
2709 g2m_decoder_select="blockdsp idctdsp jpegtables"
2710 g729_decoder_select="audiodsp"
2711 h261_decoder_select="mpegvideo"
2712 h261_encoder_select="mpegvideoenc"
2713 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2714 h263_encoder_select="h263dsp mpegvideoenc"
2715 h263i_decoder_select="h263_decoder"
2716 h263p_decoder_select="h263_decoder"
2717 h263p_encoder_select="h263_encoder"
2718 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2719 h264_decoder_suggest="error_resilience"
2720 hap_decoder_select="snappy texturedsp"
2721 hap_encoder_deps="libsnappy"
2722 hap_encoder_select="texturedspenc"
2723 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2724 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2725 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2726 hymt_decoder_select="huffyuv_decoder"
2727 iac_decoder_select="imc_decoder"
2728 imc_decoder_select="bswapdsp fft mdct sinewin"
2729 imm4_decoder_select="bswapdsp"
2730 imm5_decoder_select="h264_decoder hevc_decoder"
2731 indeo3_decoder_select="hpeldsp"
2732 indeo4_decoder_select="ividsp"
2733 indeo5_decoder_select="ividsp"
2734 interplay_video_decoder_select="hpeldsp"
2735 jpegls_decoder_select="mjpeg_decoder"
2736 jv_decoder_select="blockdsp"
2737 lagarith_decoder_select="llviddsp"
2738 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2739 lscr_decoder_deps="zlib"
2740 magicyuv_decoder_select="llviddsp"
2741 magicyuv_encoder_select="llvidencdsp"
2742 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2743 metasound_decoder_select="lsp mdct sinewin"
2744 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2745 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2746 mjpeg_encoder_select="jpegtables mpegvideoenc"
2747 mjpegb_decoder_select="mjpeg_decoder"
2748 mlp_decoder_select="mlp_parser"
2749 mlp_encoder_select="lpc audio_frame_queue"
2750 motionpixels_decoder_select="bswapdsp"
2751 mp1_decoder_select="mpegaudio"
2752 mp1float_decoder_select="mpegaudio"
2753 mp2_decoder_select="mpegaudio"
2754 mp2float_decoder_select="mpegaudio"
2755 mp3_decoder_select="mpegaudio"
2756 mp3adu_decoder_select="mpegaudio"
2757 mp3adufloat_decoder_select="mpegaudio"
2758 mp3float_decoder_select="mpegaudio"
2759 mp3on4_decoder_select="mpegaudio"
2760 mp3on4float_decoder_select="mpegaudio"
2761 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2762 mpc8_decoder_select="mpegaudiodsp"
2763 mpegvideo_decoder_select="mpegvideo"
2764 mpeg1video_decoder_select="mpegvideo"
2765 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2766 mpeg2video_decoder_select="mpegvideo"
2767 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2768 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2769 mpeg4_encoder_select="h263_encoder"
2770 msa1_decoder_select="mss34dsp"
2771 mscc_decoder_deps="zlib"
2772 msmpeg4v1_decoder_select="h263_decoder"
2773 msmpeg4v2_decoder_select="h263_decoder"
2774 msmpeg4v2_encoder_select="h263_encoder"
2775 msmpeg4v3_decoder_select="h263_decoder"
2776 msmpeg4v3_encoder_select="h263_encoder"
2777 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2778 mts2_decoder_select="mss34dsp"
2779 mwsc_decoder_deps="zlib"
2780 mxpeg_decoder_select="mjpeg_decoder"
2781 nellymoser_decoder_select="mdct sinewin"
2782 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2783 nuv_decoder_select="idctdsp lzo"
2784 on2avc_decoder_select="mdct"
2785 opus_decoder_deps="swresample"
2786 opus_decoder_select="mdct15"
2787 opus_encoder_select="audio_frame_queue mdct15"
2788 png_decoder_deps="zlib"
2789 png_encoder_deps="zlib"
2790 png_encoder_select="llvidencdsp"
2791 prores_decoder_select="blockdsp idctdsp"
2792 prores_encoder_select="fdctdsp"
2793 qcelp_decoder_select="lsp"
2794 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2795 ra_144_decoder_select="audiodsp"
2796 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2797 ralf_decoder_select="golomb"
2798 rasc_decoder_deps="zlib"
2799 rawvideo_decoder_select="bswapdsp"
2800 rscc_decoder_deps="zlib"
2801 rtjpeg_decoder_select="me_cmp"
2802 rv10_decoder_select="h263_decoder"
2803 rv10_encoder_select="h263_encoder"
2804 rv20_decoder_select="h263_decoder"
2805 rv20_encoder_select="h263_encoder"
2806 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2807 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2808 screenpresso_decoder_deps="zlib"
2809 shorten_decoder_select="bswapdsp"
2810 sipr_decoder_select="lsp"
2811 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2812 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2813 sonic_decoder_select="golomb rangecoder"
2814 sonic_encoder_select="golomb rangecoder"
2815 sonic_ls_encoder_select="golomb rangecoder"
2816 sp5x_decoder_select="mjpeg_decoder"
2817 speedhq_decoder_select="mpegvideo"
2818 srgc_decoder_deps="zlib"
2819 svq1_decoder_select="hpeldsp"
2820 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2821 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2822 svq3_decoder_suggest="zlib"
2823 tak_decoder_select="audiodsp"
2824 tdsc_decoder_deps="zlib"
2825 tdsc_decoder_select="mjpeg_decoder"
2826 theora_decoder_select="vp3_decoder"
2827 thp_decoder_select="mjpeg_decoder"
2828 tiff_decoder_select="mjpeg_decoder"
2829 tiff_decoder_suggest="zlib lzma"
2830 tiff_encoder_suggest="zlib"
2831 truehd_decoder_select="mlp_parser"
2832 truehd_encoder_select="lpc audio_frame_queue"
2833 truemotion2_decoder_select="bswapdsp"
2834 truespeech_decoder_select="bswapdsp"
2835 tscc_decoder_deps="zlib"
2836 twinvq_decoder_select="mdct lsp sinewin"
2837 txd_decoder_select="texturedsp"
2838 utvideo_decoder_select="bswapdsp llviddsp"
2839 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2840 vble_decoder_select="llviddsp"
2841 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2842 vc1image_decoder_select="vc1_decoder"
2843 vorbis_decoder_select="mdct"
2844 vorbis_encoder_select="audio_frame_queue mdct"
2845 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2846 vp4_decoder_select="vp3_decoder"
2847 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2848 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2849 vp6a_decoder_select="vp6_decoder"
2850 vp6f_decoder_select="vp6_decoder"
2851 vp7_decoder_select="h264pred videodsp vp8dsp"
2852 vp8_decoder_select="h264pred videodsp vp8dsp"
2853 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2854 wcmv_decoder_deps="zlib"
2855 webp_decoder_select="vp8_decoder exif"
2856 wmalossless_decoder_select="llauddsp"
2857 wmapro_decoder_select="mdct sinewin wma_freqs"
2858 wmav1_decoder_select="mdct sinewin wma_freqs"
2859 wmav1_encoder_select="mdct sinewin wma_freqs"
2860 wmav2_decoder_select="mdct sinewin wma_freqs"
2861 wmav2_encoder_select="mdct sinewin wma_freqs"
2862 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2863 wmv1_decoder_select="h263_decoder"
2864 wmv1_encoder_select="h263_encoder"
2865 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2866 wmv2_encoder_select="h263_encoder wmv2dsp"
2867 wmv3_decoder_select="vc1_decoder"
2868 wmv3image_decoder_select="wmv3_decoder"
2869 xma1_decoder_select="wmapro_decoder"
2870 xma2_decoder_select="wmapro_decoder"
2871 ylc_decoder_select="bswapdsp"
2872 zerocodec_decoder_deps="zlib"
2873 zlib_decoder_deps="zlib"
2874 zlib_encoder_deps="zlib"
2875 zmbv_decoder_deps="zlib"
2876 zmbv_encoder_deps="zlib"
2877
2878 # hardware accelerators
2879 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2880 cuda_deps="ffnvcodec"
2881 cuvid_deps="ffnvcodec"
2882 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2883 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2884 ffnvcodec_deps_any="libdl LoadLibrary"
2885 nvdec_deps="ffnvcodec"
2886 vaapi_x11_deps="xlib"
2887 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2888 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2889 xvmc_deps="X11_extensions_XvMClib_h"
2890
2891 h263_vaapi_hwaccel_deps="vaapi"
2892 h263_vaapi_hwaccel_select="h263_decoder"
2893 h263_videotoolbox_hwaccel_deps="videotoolbox"
2894 h263_videotoolbox_hwaccel_select="h263_decoder"
2895 h264_d3d11va_hwaccel_deps="d3d11va"
2896 h264_d3d11va_hwaccel_select="h264_decoder"
2897 h264_d3d11va2_hwaccel_deps="d3d11va"
2898 h264_d3d11va2_hwaccel_select="h264_decoder"
2899 h264_dxva2_hwaccel_deps="dxva2"
2900 h264_dxva2_hwaccel_select="h264_decoder"
2901 h264_nvdec_hwaccel_deps="nvdec"
2902 h264_nvdec_hwaccel_select="h264_decoder"
2903 h264_vaapi_hwaccel_deps="vaapi"
2904 h264_vaapi_hwaccel_select="h264_decoder"
2905 h264_vdpau_hwaccel_deps="vdpau"
2906 h264_vdpau_hwaccel_select="h264_decoder"
2907 h264_videotoolbox_hwaccel_deps="videotoolbox"
2908 h264_videotoolbox_hwaccel_select="h264_decoder"
2909 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2910 hevc_d3d11va_hwaccel_select="hevc_decoder"
2911 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2912 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2913 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2914 hevc_dxva2_hwaccel_select="hevc_decoder"
2915 hevc_nvdec_hwaccel_deps="nvdec"
2916 hevc_nvdec_hwaccel_select="hevc_decoder"
2917 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2918 hevc_vaapi_hwaccel_select="hevc_decoder"
2919 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2920 hevc_vdpau_hwaccel_select="hevc_decoder"
2921 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2922 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2923 mjpeg_nvdec_hwaccel_deps="nvdec"
2924 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2925 mjpeg_vaapi_hwaccel_deps="vaapi"
2926 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2927 mpeg_xvmc_hwaccel_deps="xvmc"
2928 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2929 mpeg1_nvdec_hwaccel_deps="nvdec"
2930 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2931 mpeg1_vdpau_hwaccel_deps="vdpau"
2932 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2933 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2934 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2935 mpeg1_xvmc_hwaccel_deps="xvmc"
2936 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2937 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2938 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2939 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2940 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2941 mpeg2_dxva2_hwaccel_deps="dxva2"
2942 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2943 mpeg2_nvdec_hwaccel_deps="nvdec"
2944 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2945 mpeg2_vaapi_hwaccel_deps="vaapi"
2946 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2947 mpeg2_vdpau_hwaccel_deps="vdpau"
2948 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2949 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2950 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2951 mpeg2_xvmc_hwaccel_deps="xvmc"
2952 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2953 mpeg4_nvdec_hwaccel_deps="nvdec"
2954 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2955 mpeg4_vaapi_hwaccel_deps="vaapi"
2956 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2957 mpeg4_vdpau_hwaccel_deps="vdpau"
2958 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2959 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2960 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2961 vc1_d3d11va_hwaccel_deps="d3d11va"
2962 vc1_d3d11va_hwaccel_select="vc1_decoder"
2963 vc1_d3d11va2_hwaccel_deps="d3d11va"
2964 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2965 vc1_dxva2_hwaccel_deps="dxva2"
2966 vc1_dxva2_hwaccel_select="vc1_decoder"
2967 vc1_nvdec_hwaccel_deps="nvdec"
2968 vc1_nvdec_hwaccel_select="vc1_decoder"
2969 vc1_vaapi_hwaccel_deps="vaapi"
2970 vc1_vaapi_hwaccel_select="vc1_decoder"
2971 vc1_vdpau_hwaccel_deps="vdpau"
2972 vc1_vdpau_hwaccel_select="vc1_decoder"
2973 vp8_nvdec_hwaccel_deps="nvdec"
2974 vp8_nvdec_hwaccel_select="vp8_decoder"
2975 vp8_vaapi_hwaccel_deps="vaapi"
2976 vp8_vaapi_hwaccel_select="vp8_decoder"
2977 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2978 vp9_d3d11va_hwaccel_select="vp9_decoder"
2979 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2980 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2981 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2982 vp9_dxva2_hwaccel_select="vp9_decoder"
2983 vp9_nvdec_hwaccel_deps="nvdec"
2984 vp9_nvdec_hwaccel_select="vp9_decoder"
2985 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2986 vp9_vaapi_hwaccel_select="vp9_decoder"
2987 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2988 vp9_vdpau_hwaccel_select="vp9_decoder"
2989 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2990 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2991 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2992 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2993 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2994 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2995
2996 # hardware-accelerated codecs
2997 omx_deps="libdl pthreads"
2998 omx_rpi_select="omx"
2999 qsv_deps="libmfx"
3000 qsvdec_select="qsv"
3001 qsvenc_select="qsv"
3002 qsvvpp_select="qsv"
3003 vaapi_encode_deps="vaapi"
3004 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3005
3006 hwupload_cuda_filter_deps="ffnvcodec"
3007 scale_npp_filter_deps="ffnvcodec libnpp"
3008 scale_cuda_filter_deps="ffnvcodec"
3009 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3010 thumbnail_cuda_filter_deps="ffnvcodec"
3011 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3012 transpose_npp_filter_deps="ffnvcodec libnpp"
3013
3014 amf_deps_any="libdl LoadLibrary"
3015 nvenc_deps="ffnvcodec"
3016 nvenc_deps_any="libdl LoadLibrary"
3017 nvenc_encoder_deps="nvenc"
3018
3019 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3020 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3021 h264_amf_encoder_deps="amf"
3022 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3023 h264_cuvid_decoder_deps="cuvid"
3024 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3025 h264_mediacodec_decoder_deps="mediacodec"
3026 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3027 h264_mmal_decoder_deps="mmal"
3028 h264_nvenc_encoder_deps="nvenc"
3029 h264_omx_encoder_deps="omx"
3030 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3031 h264_qsv_encoder_select="qsvenc"
3032 h264_rkmpp_decoder_deps="rkmpp"
3033 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3034 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3035 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3036 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3037 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3038 hevc_amf_encoder_deps="amf"
3039 hevc_cuvid_decoder_deps="cuvid"
3040 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3041 hevc_mediacodec_decoder_deps="mediacodec"
3042 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3043 hevc_nvenc_encoder_deps="nvenc"
3044 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3045 hevc_qsv_encoder_select="hevcparse qsvenc"
3046 hevc_rkmpp_decoder_deps="rkmpp"
3047 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3048 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3049 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3050 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3051 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3052 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3053 mjpeg_cuvid_decoder_deps="cuvid"
3054 mjpeg_qsv_decoder_select="qsvdec"
3055 mjpeg_qsv_encoder_deps="libmfx"
3056 mjpeg_qsv_encoder_select="qsvenc"
3057 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3058 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3059 mpeg1_cuvid_decoder_deps="cuvid"
3060 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3061 mpeg2_crystalhd_decoder_select="crystalhd"
3062 mpeg2_cuvid_decoder_deps="cuvid"
3063 mpeg2_mmal_decoder_deps="mmal"
3064 mpeg2_mediacodec_decoder_deps="mediacodec"
3065 mpeg2_qsv_decoder_select="qsvdec"
3066 mpeg2_qsv_encoder_select="qsvenc"
3067 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3068 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3069 mpeg4_crystalhd_decoder_select="crystalhd"
3070 mpeg4_cuvid_decoder_deps="cuvid"
3071 mpeg4_mediacodec_decoder_deps="mediacodec"
3072 mpeg4_mmal_decoder_deps="mmal"
3073 mpeg4_omx_encoder_deps="omx"
3074 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3075 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3076 msmpeg4_crystalhd_decoder_select="crystalhd"
3077 nvenc_h264_encoder_select="h264_nvenc_encoder"
3078 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3079 vc1_crystalhd_decoder_select="crystalhd"
3080 vc1_cuvid_decoder_deps="cuvid"
3081 vc1_mmal_decoder_deps="mmal"
3082 vc1_qsv_decoder_select="qsvdec"
3083 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3084 vp8_cuvid_decoder_deps="cuvid"
3085 vp8_mediacodec_decoder_deps="mediacodec"
3086 vp8_qsv_decoder_select="qsvdec"
3087 vp8_rkmpp_decoder_deps="rkmpp"
3088 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3089 vp8_vaapi_encoder_select="vaapi_encode"
3090 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3091 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3092 vp9_cuvid_decoder_deps="cuvid"
3093 vp9_mediacodec_decoder_deps="mediacodec"
3094 vp9_qsv_decoder_select="qsvdec"
3095 vp9_rkmpp_decoder_deps="rkmpp"
3096 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3097 vp9_vaapi_encoder_select="vaapi_encode"
3098 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3099 vp9_qsv_encoder_select="qsvenc"
3100 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3101 wmv3_crystalhd_decoder_select="crystalhd"
3102
3103 # parsers
3104 aac_parser_select="adts_header"
3105 av1_parser_select="cbs_av1"
3106 h264_parser_select="golomb h264dsp h264parse"
3107 hevc_parser_select="hevcparse"
3108 mpegaudio_parser_select="mpegaudioheader"
3109 mpegvideo_parser_select="mpegvideo"
3110 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3111 vc1_parser_select="vc1dsp"
3112
3113 # bitstream_filters
3114 aac_adtstoasc_bsf_select="adts_header"
3115 av1_frame_split_bsf_select="cbs_av1"
3116 av1_metadata_bsf_select="cbs_av1"
3117 eac3_core_bsf_select="ac3_parser"
3118 filter_units_bsf_select="cbs"
3119 h264_metadata_bsf_deps="const_nan"
3120 h264_metadata_bsf_select="cbs_h264"
3121 h264_redundant_pps_bsf_select="cbs_h264"
3122 hevc_metadata_bsf_select="cbs_h265"
3123 mjpeg2jpeg_bsf_select="jpegtables"
3124 mpeg2_metadata_bsf_select="cbs_mpeg2"
3125 trace_headers_bsf_select="cbs"
3126 vp9_metadata_bsf_select="cbs_vp9"
3127
3128 # external libraries
3129 aac_at_decoder_deps="audiotoolbox"
3130 aac_at_decoder_select="aac_adtstoasc_bsf"
3131 ac3_at_decoder_deps="audiotoolbox"
3132 ac3_at_decoder_select="ac3_parser"
3133 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3134 alac_at_decoder_deps="audiotoolbox"
3135 amr_nb_at_decoder_deps="audiotoolbox"
3136 avisynth_deps_any="libdl LoadLibrary"
3137 avisynth_demuxer_deps="avisynth"
3138 avisynth_demuxer_select="riffdec"
3139 eac3_at_decoder_deps="audiotoolbox"
3140 eac3_at_decoder_select="ac3_parser"
3141 gsm_ms_at_decoder_deps="audiotoolbox"
3142 ilbc_at_decoder_deps="audiotoolbox"
3143 mp1_at_decoder_deps="audiotoolbox"
3144 mp2_at_decoder_deps="audiotoolbox"
3145 mp3_at_decoder_deps="audiotoolbox"
3146 mp1_at_decoder_select="mpegaudioheader"
3147 mp2_at_decoder_select="mpegaudioheader"
3148 mp3_at_decoder_select="mpegaudioheader"
3149 pcm_alaw_at_decoder_deps="audiotoolbox"
3150 pcm_mulaw_at_decoder_deps="audiotoolbox"
3151 qdmc_decoder_select="fft"
3152 qdmc_at_decoder_deps="audiotoolbox"
3153 qdm2_at_decoder_deps="audiotoolbox"
3154 aac_at_encoder_deps="audiotoolbox"
3155 aac_at_encoder_select="audio_frame_queue"
3156 alac_at_encoder_deps="audiotoolbox"
3157 alac_at_encoder_select="audio_frame_queue"
3158 ilbc_at_encoder_deps="audiotoolbox"
3159 ilbc_at_encoder_select="audio_frame_queue"
3160 pcm_alaw_at_encoder_deps="audiotoolbox"
3161 pcm_alaw_at_encoder_select="audio_frame_queue"
3162 pcm_mulaw_at_encoder_deps="audiotoolbox"
3163 pcm_mulaw_at_encoder_select="audio_frame_queue"
3164 chromaprint_muxer_deps="chromaprint"
3165 h264_videotoolbox_encoder_deps="pthreads"
3166 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3167 hevc_videotoolbox_encoder_deps="pthreads"
3168 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3169 libaom_av1_decoder_deps="libaom"
3170 libaom_av1_encoder_deps="libaom"
3171 libaom_av1_encoder_select="extract_extradata_bsf"
3172 libaribb24_decoder_deps="libaribb24"
3173 libcelt_decoder_deps="libcelt"
3174 libcodec2_decoder_deps="libcodec2"
3175 libcodec2_encoder_deps="libcodec2"
3176 libdav1d_decoder_deps="libdav1d"
3177 libdavs2_decoder_deps="libdavs2"
3178 libfdk_aac_decoder_deps="libfdk_aac"
3179 libfdk_aac_encoder_deps="libfdk_aac"
3180 libfdk_aac_encoder_select="audio_frame_queue"
3181 libgme_demuxer_deps="libgme"
3182 libgsm_decoder_deps="libgsm"
3183 libgsm_encoder_deps="libgsm"
3184 libgsm_ms_decoder_deps="libgsm"
3185 libgsm_ms_encoder_deps="libgsm"
3186 libilbc_decoder_deps="libilbc"
3187 libilbc_encoder_deps="libilbc"
3188 libkvazaar_encoder_deps="libkvazaar"
3189 libmodplug_demuxer_deps="libmodplug"
3190 libmp3lame_encoder_deps="libmp3lame"
3191 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3192 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3193 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3194 libopencore_amrnb_encoder_select="audio_frame_queue"
3195 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3196 libopenh264_decoder_deps="libopenh264"
3197 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3198 libopenh264_encoder_deps="libopenh264"
3199 libopenjpeg_decoder_deps="libopenjpeg"
3200 libopenjpeg_encoder_deps="libopenjpeg"
3201 libopenmpt_demuxer_deps="libopenmpt"
3202 libopus_decoder_deps="libopus"
3203 libopus_encoder_deps="libopus"
3204 libopus_encoder_select="audio_frame_queue"
3205 librsvg_decoder_deps="librsvg"
3206 libshine_encoder_deps="libshine"
3207 libshine_encoder_select="audio_frame_queue"
3208 libspeex_decoder_deps="libspeex"
3209 libspeex_encoder_deps="libspeex"
3210 libspeex_encoder_select="audio_frame_queue"
3211 libtheora_encoder_deps="libtheora"
3212 libtwolame_encoder_deps="libtwolame"
3213 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3214 libvorbis_decoder_deps="libvorbis"
3215 libvorbis_encoder_deps="libvorbis libvorbisenc"
3216 libvorbis_encoder_select="audio_frame_queue"
3217 libvpx_vp8_decoder_deps="libvpx"
3218 libvpx_vp8_encoder_deps="libvpx"
3219 libvpx_vp9_decoder_deps="libvpx"
3220 libvpx_vp9_encoder_deps="libvpx"
3221 libwavpack_encoder_deps="libwavpack"
3222 libwavpack_encoder_select="audio_frame_queue"
3223 libwebp_encoder_deps="libwebp"
3224 libwebp_anim_encoder_deps="libwebp"
3225 libx262_encoder_deps="libx262"
3226 libx264_encoder_deps="libx264"
3227 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3228 libx264rgb_encoder_select="libx264_encoder"
3229 libx265_encoder_deps="libx265"
3230 libxavs_encoder_deps="libxavs"
3231 libxavs2_encoder_deps="libxavs2"
3232 libxvid_encoder_deps="libxvid"
3233 libzvbi_teletext_decoder_deps="libzvbi"
3234 vapoursynth_demuxer_deps="vapoursynth"
3235 videotoolbox_suggest="coreservices"
3236 videotoolbox_deps="corefoundation coremedia corevideo"
3237 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3238
3239 # demuxers / muxers
3240 ac3_demuxer_select="ac3_parser"
3241 act_demuxer_select="riffdec"
3242 aiff_muxer_select="iso_media"
3243 asf_demuxer_select="riffdec"
3244 asf_o_demuxer_select="riffdec"
3245 asf_muxer_select="riffenc"
3246 asf_stream_muxer_select="asf_muxer"
3247 avi_demuxer_select="iso_media riffdec exif"
3248 avi_muxer_select="riffenc"
3249 caf_demuxer_select="iso_media riffdec"
3250 caf_muxer_select="iso_media"
3251 dash_muxer_select="mp4_muxer"
3252 dash_demuxer_deps="libxml2"
3253 dirac_demuxer_select="dirac_parser"
3254 dts_demuxer_select="dca_parser"
3255 dtshd_demuxer_select="dca_parser"
3256 dv_demuxer_select="dvprofile"
3257 dv_muxer_select="dvprofile"
3258 dxa_demuxer_select="riffdec"
3259 eac3_demuxer_select="ac3_parser"
3260 f4v_muxer_select="mov_muxer"
3261 fifo_muxer_deps="threads"
3262 flac_demuxer_select="flac_parser"
3263 hds_muxer_select="flv_muxer"
3264 hls_muxer_select="mpegts_muxer"
3265 hls_muxer_suggest="gcrypt openssl"
3266 image2_alias_pix_demuxer_select="image2_demuxer"
3267 image2_brender_pix_demuxer_select="image2_demuxer"
3268 ipod_muxer_select="mov_muxer"
3269 ismv_muxer_select="mov_muxer"
3270 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3271 matroska_audio_muxer_select="matroska_muxer"
3272 matroska_demuxer_select="iso_media riffdec"
3273 matroska_demuxer_suggest="bzlib lzo zlib"
3274 matroska_muxer_select="iso_media riffenc"
3275 mmf_muxer_select="riffenc"
3276 mov_demuxer_select="iso_media riffdec"
3277 mov_demuxer_suggest="zlib"
3278 mov_muxer_select="iso_media riffenc rtpenc_chain"
3279 mp3_demuxer_select="mpegaudio_parser"
3280 mp3_muxer_select="mpegaudioheader"
3281 mp4_muxer_select="mov_muxer"
3282 mpegts_demuxer_select="iso_media"
3283 mpegts_muxer_select="adts_muxer latm_muxer"
3284 mpegtsraw_demuxer_select="mpegts_demuxer"
3285 mxf_muxer_select="golomb"
3286 mxf_d10_muxer_select="mxf_muxer"
3287 mxf_opatom_muxer_select="mxf_muxer"
3288 nut_muxer_select="riffenc"
3289 nuv_demuxer_select="riffdec"
3290 oga_muxer_select="ogg_muxer"
3291 ogg_demuxer_select="dirac_parse"
3292 ogv_muxer_select="ogg_muxer"
3293 opus_muxer_select="ogg_muxer"
3294 psp_muxer_select="mov_muxer"
3295 rtp_demuxer_select="sdp_demuxer"
3296 rtp_muxer_select="golomb jpegtables"
3297 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3298 rtsp_demuxer_select="http_protocol rtpdec"
3299 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3300 sap_demuxer_select="sdp_demuxer"
3301 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3302 sdp_demuxer_select="rtpdec"
3303 smoothstreaming_muxer_select="ismv_muxer"
3304 spdif_demuxer_select="adts_header"
3305 spdif_muxer_select="adts_header"
3306 spx_muxer_select="ogg_muxer"
3307 swf_demuxer_suggest="zlib"
3308 tak_demuxer_select="tak_parser"
3309 tg2_muxer_select="mov_muxer"
3310 tgp_muxer_select="mov_muxer"
3311 vobsub_demuxer_select="mpegps_demuxer"
3312 w64_demuxer_select="wav_demuxer"
3313 w64_muxer_select="wav_muxer"
3314 wav_demuxer_select="riffdec"
3315 wav_muxer_select="riffenc"
3316 webm_muxer_select="iso_media riffenc"
3317 webm_dash_manifest_demuxer_select="matroska_demuxer"
3318 wtv_demuxer_select="mpegts_demuxer riffdec"
3319 wtv_muxer_select="mpegts_muxer riffenc"
3320 xmv_demuxer_select="riffdec"
3321 xwma_demuxer_select="riffdec"
3322
3323 # indevs / outdevs
3324 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3325 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3326 alsa_indev_deps="alsa"
3327 alsa_outdev_deps="alsa"
3328 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3329 avfoundation_indev_suggest="coregraphics applicationservices"
3330 avfoundation_indev_extralibs="-framework Foundation"
3331 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3332 caca_outdev_deps="libcaca"
3333 decklink_deps_any="libdl LoadLibrary"
3334 decklink_indev_deps="decklink threads"
3335 decklink_indev_extralibs="-lstdc++"
3336 decklink_outdev_deps="decklink threads"
3337 decklink_outdev_suggest="libklvanc"
3338 decklink_outdev_extralibs="-lstdc++"
3339 dshow_indev_deps="IBaseFilter"
3340 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3341 fbdev_indev_deps="linux_fb_h"
3342 fbdev_outdev_deps="linux_fb_h"
3343 gdigrab_indev_deps="CreateDIBSection"
3344 gdigrab_indev_extralibs="-lgdi32"
3345 gdigrab_indev_select="bmp_decoder"
3346 iec61883_indev_deps="libiec61883"
3347 jack_indev_deps="libjack"
3348 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3349 kmsgrab_indev_deps="libdrm"
3350 lavfi_indev_deps="avfilter"
3351 libcdio_indev_deps="libcdio"
3352 libdc1394_indev_deps="libdc1394"
3353 openal_indev_deps="openal"
3354 opengl_outdev_deps="opengl"
3355 opengl_outdev_suggest="sdl2"
3356 oss_indev_deps_any="sys_soundcard_h"
3357 oss_outdev_deps_any="sys_soundcard_h"
3358 pulse_indev_deps="libpulse"
3359 pulse_outdev_deps="libpulse"
3360 sdl2_outdev_deps="sdl2"
3361 sndio_indev_deps="sndio"
3362 sndio_outdev_deps="sndio"
3363 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3364 v4l2_indev_suggest="libv4l2"
3365 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3366 v4l2_outdev_suggest="libv4l2"
3367 vfwcap_indev_deps="vfw32 vfwcap_defines"
3368 xcbgrab_indev_deps="libxcb"
3369 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3370 xv_outdev_deps="xlib"
3371
3372 # protocols
3373 async_protocol_deps="threads"
3374 bluray_protocol_deps="libbluray"
3375 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3376 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3377 ffrtmpcrypt_protocol_select="tcp_protocol"
3378 ffrtmphttp_protocol_conflict="librtmp_protocol"
3379 ffrtmphttp_protocol_select="http_protocol"
3380 ftp_protocol_select="tcp_protocol"
3381 gopher_protocol_select="network"
3382 http_protocol_select="tcp_protocol"
3383 http_protocol_suggest="zlib"
3384 httpproxy_protocol_select="tcp_protocol"
3385 httpproxy_protocol_suggest="zlib"
3386 https_protocol_select="tls_protocol"
3387 https_protocol_suggest="zlib"
3388 icecast_protocol_select="http_protocol"
3389 mmsh_protocol_select="http_protocol"
3390 mmst_protocol_select="network"
3391 rtmp_protocol_conflict="librtmp_protocol"
3392 rtmp_protocol_select="tcp_protocol"
3393 rtmp_protocol_suggest="zlib"
3394 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3395 rtmpe_protocol_suggest="zlib"
3396 rtmps_protocol_conflict="librtmp_protocol"
3397 rtmps_protocol_select="tls_protocol"
3398 rtmps_protocol_suggest="zlib"
3399 rtmpt_protocol_select="ffrtmphttp_protocol"
3400 rtmpt_protocol_suggest="zlib"
3401 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3402 rtmpte_protocol_suggest="zlib"
3403 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3404 rtmpts_protocol_suggest="zlib"
3405 rtp_protocol_select="udp_protocol"
3406 schannel_conflict="openssl gnutls libtls mbedtls"
3407 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3408 sctp_protocol_select="network"
3409 securetransport_conflict="openssl gnutls libtls mbedtls"
3410 srtp_protocol_select="rtp_protocol srtp"
3411 tcp_protocol_select="network"
3412 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3413 tls_protocol_select="tcp_protocol"
3414 udp_protocol_select="network"
3415 udplite_protocol_select="network"
3416 unix_protocol_deps="sys_un_h"
3417 unix_protocol_select="network"
3418
3419 # external library protocols
3420 librtmp_protocol_deps="librtmp"
3421 librtmpe_protocol_deps="librtmp"
3422 librtmps_protocol_deps="librtmp"
3423 librtmpt_protocol_deps="librtmp"
3424 librtmpte_protocol_deps="librtmp"
3425 libsmbclient_protocol_deps="libsmbclient gplv3"
3426 libsrt_protocol_deps="libsrt"
3427 libsrt_protocol_select="network"
3428 libssh_protocol_deps="libssh"
3429 libtls_conflict="openssl gnutls mbedtls"
3430 libzmq_protocol_deps="libzmq"
3431 libzmq_protocol_select="network"
3432
3433 # filters
3434 afftdn_filter_deps="avcodec"
3435 afftdn_filter_select="fft"
3436 afftfilt_filter_deps="avcodec"
3437 afftfilt_filter_select="fft"
3438 afir_filter_deps="avcodec"
3439 afir_filter_select="fft"
3440 amovie_filter_deps="avcodec avformat"
3441 aresample_filter_deps="swresample"
3442 asr_filter_deps="pocketsphinx"
3443 ass_filter_deps="libass"
3444 atempo_filter_deps="avcodec"
3445 atempo_filter_select="rdft"
3446 avgblur_opencl_filter_deps="opencl"
3447 azmq_filter_deps="libzmq"
3448 blackframe_filter_deps="gpl"
3449 bm3d_filter_deps="avcodec"
3450 bm3d_filter_select="dct"
3451 boxblur_filter_deps="gpl"
3452 boxblur_opencl_filter_deps="opencl gpl"
3453 bs2b_filter_deps="libbs2b"
3454 colorkey_opencl_filter_deps="opencl"
3455 colormatrix_filter_deps="gpl"
3456 convolution_opencl_filter_deps="opencl"
3457 convolve_filter_deps="avcodec"
3458 convolve_filter_select="fft"
3459 coreimage_filter_deps="coreimage appkit"
3460 coreimage_filter_extralibs="-framework OpenGL"
3461 coreimagesrc_filter_deps="coreimage appkit"
3462 coreimagesrc_filter_extralibs="-framework OpenGL"
3463 cover_rect_filter_deps="avcodec avformat gpl"
3464 cropdetect_filter_deps="gpl"
3465 deconvolve_filter_deps="avcodec"
3466 deconvolve_filter_select="fft"
3467 deinterlace_qsv_filter_deps="libmfx"
3468 deinterlace_vaapi_filter_deps="vaapi"
3469 delogo_filter_deps="gpl"
3470 denoise_vaapi_filter_deps="vaapi"
3471 derain_filter_select="dnn"
3472 deshake_filter_select="pixelutils"
3473 deshake_opencl_filter_deps="opencl"
3474 dilation_opencl_filter_deps="opencl"
3475 drawtext_filter_deps="libfreetype"
3476 drawtext_filter_suggest="libfontconfig libfribidi"
3477 elbg_filter_deps="avcodec"
3478 eq_filter_deps="gpl"
3479 erosion_opencl_filter_deps="opencl"
3480 fftfilt_filter_deps="avcodec"
3481 fftfilt_filter_select="rdft"
3482 fftdnoiz_filter_deps="avcodec"
3483 fftdnoiz_filter_select="fft"
3484 find_rect_filter_deps="avcodec avformat gpl"
3485 firequalizer_filter_deps="avcodec"
3486 firequalizer_filter_select="rdft"
3487 flite_filter_deps="libflite"
3488 framerate_filter_select="scene_sad"
3489 freezedetect_filter_select="scene_sad"
3490 frei0r_filter_deps="frei0r libdl"
3491 frei0r_src_filter_deps="frei0r libdl"
3492 fspp_filter_deps="gpl"
3493 geq_filter_deps="gpl"
3494 histeq_filter_deps="gpl"
3495 hqdn3d_filter_deps="gpl"
3496 interlace_filter_deps="gpl"
3497 kerndeint_filter_deps="gpl"
3498 ladspa_filter_deps="ladspa libdl"
3499 lensfun_filter_deps="liblensfun version3"
3500 lv2_filter_deps="lv2"
3501 mcdeint_filter_deps="avcodec gpl"
3502 movie_filter_deps="avcodec avformat"
3503 mpdecimate_filter_deps="gpl"
3504 mpdecimate_filter_select="pixelutils"
3505 minterpolate_filter_select="scene_sad"
3506 mptestsrc_filter_deps="gpl"
3507 negate_filter_deps="lut_filter"
3508 nlmeans_opencl_filter_deps="opencl"
3509 nnedi_filter_deps="gpl"
3510 ocr_filter_deps="libtesseract"
3511 ocv_filter_deps="libopencv"
3512 openclsrc_filter_deps="opencl"
3513 overlay_opencl_filter_deps="opencl"
3514 overlay_qsv_filter_deps="libmfx"
3515 overlay_qsv_filter_select="qsvvpp"
3516 owdenoise_filter_deps="gpl"
3517 pan_filter_deps="swresample"
3518 perspective_filter_deps="gpl"
3519 phase_filter_deps="gpl"
3520 pp7_filter_deps="gpl"
3521 pp_filter_deps="gpl postproc"
3522 prewitt_opencl_filter_deps="opencl"
3523 procamp_vaapi_filter_deps="vaapi"
3524 program_opencl_filter_deps="opencl"
3525 pullup_filter_deps="gpl"
3526 removelogo_filter_deps="avcodec avformat swscale"
3527 repeatfields_filter_deps="gpl"
3528 resample_filter_deps="avresample"
3529 roberts_opencl_filter_deps="opencl"
3530 rubberband_filter_deps="librubberband"
3531 sab_filter_deps="gpl swscale"
3532 scale2ref_filter_deps="swscale"
3533 scale_filter_deps="swscale"
3534 scale_qsv_filter_deps="libmfx"
3535 select_filter_select="scene_sad"
3536 sharpness_vaapi_filter_deps="vaapi"
3537 showcqt_filter_deps="avcodec avformat swscale"
3538 showcqt_filter_suggest="libfontconfig libfreetype"
3539 showcqt_filter_select="fft"
3540 showfreqs_filter_deps="avcodec"
3541 showfreqs_filter_select="fft"
3542 showspectrum_filter_deps="avcodec"
3543 showspectrum_filter_select="fft"
3544 showspectrumpic_filter_deps="avcodec"
3545 showspectrumpic_filter_select="fft"
3546 signature_filter_deps="gpl avcodec avformat"
3547 smartblur_filter_deps="gpl swscale"
3548 sobel_opencl_filter_deps="opencl"
3549 sofalizer_filter_deps="libmysofa avcodec"
3550 sofalizer_filter_select="fft"
3551 spectrumsynth_filter_deps="avcodec"
3552 spectrumsynth_filter_select="fft"
3553 spp_filter_deps="gpl avcodec"
3554 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3555 sr_filter_deps="avformat swscale"
3556 sr_filter_select="dnn"
3557 stereo3d_filter_deps="gpl"
3558 subtitles_filter_deps="avformat avcodec libass"
3559 super2xsai_filter_deps="gpl"
3560 pixfmts_super2xsai_test_deps="super2xsai_filter"
3561 tinterlace_filter_deps="gpl"
3562 tinterlace_merge_test_deps="tinterlace_filter"
3563 tinterlace_pad_test_deps="tinterlace_filter"
3564 tonemap_filter_deps="const_nan"
3565 tonemap_opencl_filter_deps="opencl const_nan"
3566 transpose_opencl_filter_deps="opencl"
3567 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3568 unsharp_opencl_filter_deps="opencl"
3569 uspp_filter_deps="gpl avcodec"
3570 vaguedenoiser_filter_deps="gpl"
3571 vidstabdetect_filter_deps="libvidstab"
3572 vidstabtransform_filter_deps="libvidstab"
3573 libvmaf_filter_deps="libvmaf pthreads"
3574 zmq_filter_deps="libzmq"
3575 zoompan_filter_deps="swscale"
3576 zscale_filter_deps="libzimg const_nan"
3577 scale_vaapi_filter_deps="vaapi"
3578 vpp_qsv_filter_deps="libmfx"
3579 vpp_qsv_filter_select="qsvvpp"
3580 yadif_cuda_filter_deps="ffnvcodec"
3581 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3582
3583 # examples
3584 avio_dir_cmd_deps="avformat avutil"
3585 avio_reading_deps="avformat avcodec avutil"
3586 decode_audio_example_deps="avcodec avutil"
3587 decode_video_example_deps="avcodec avutil"
3588 demuxing_decoding_example_deps="avcodec avformat avutil"
3589 encode_audio_example_deps="avcodec avutil"
3590 encode_video_example_deps="avcodec avutil"
3591 extract_mvs_example_deps="avcodec avformat avutil"
3592 filter_audio_example_deps="avfilter avutil"
3593 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3594 filtering_video_example_deps="avfilter avcodec avformat avutil"
3595 http_multiclient_example_deps="avformat avutil fork"
3596 hw_decode_example_deps="avcodec avformat avutil"
3597 metadata_example_deps="avformat avutil"
3598 muxing_example_deps="avcodec avformat avutil swscale"
3599 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3600 remuxing_example_deps="avcodec avformat avutil"
3601 resampling_audio_example_deps="avutil swresample"
3602 scaling_video_example_deps="avutil swscale"
3603 transcode_aac_example_deps="avcodec avformat swresample"
3604 transcoding_example_deps="avfilter avcodec avformat avutil"
3605 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3606 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3607
3608 # EXTRALIBS_LIST
3609 cpu_init_extralibs="pthreads_extralibs"
3610 cws2fws_extralibs="zlib_extralibs"
3611
3612 # libraries, in any order
3613 avcodec_deps="avutil"
3614 avcodec_suggest="libm"
3615 avcodec_select="null_bsf"
3616 avdevice_deps="avformat avcodec avutil"
3617 avdevice_suggest="libm"
3618 avfilter_deps="avutil"
3619 avfilter_suggest="libm"
3620 avformat_deps="avcodec avutil"
3621 avformat_suggest="libm network zlib"
3622 avresample_deps="avutil"
3623 avresample_suggest="libm"
3624 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3625 postproc_deps="avutil gpl"
3626 postproc_suggest="libm"
3627 swresample_deps="avutil"
3628 swresample_suggest="libm libsoxr"
3629 swscale_deps="avutil"
3630 swscale_suggest="libm"
3631
3632 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3633 avfilter_extralibs="pthreads_extralibs"
3634 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3635
3636 # programs
3637 ffmpeg_deps="avcodec avfilter avformat"
3638 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3639                hflip_filter null_filter
3640                transpose_filter trim_filter vflip_filter"
3641 ffmpeg_suggest="ole32 psapi shell32"
3642 ffplay_deps="avcodec avformat swscale swresample sdl2"
3643 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3644 ffplay_suggest="shell32"
3645 ffprobe_deps="avcodec avformat"
3646 ffprobe_suggest="shell32"
3647
3648 # documentation
3649 podpages_deps="perl"
3650 manpages_deps="perl pod2man"
3651 htmlpages_deps="perl"
3652 htmlpages_deps_any="makeinfo_html texi2html"
3653 txtpages_deps="perl makeinfo"
3654 doc_deps_any="manpages htmlpages podpages txtpages"
3655
3656 # default parameters
3657
3658 logfile="ffbuild/config.log"
3659
3660 # installation paths
3661 prefix_default="/usr/local"
3662 bindir_default='${prefix}/bin'
3663 datadir_default='${prefix}/share/ffmpeg'
3664 docdir_default='${prefix}/share/doc/ffmpeg'
3665 incdir_default='${prefix}/include'
3666 libdir_default='${prefix}/lib'
3667 mandir_default='${prefix}/share/man'
3668
3669 # toolchain
3670 ar_default="ar"
3671 cc_default="gcc"
3672 cxx_default="g++"
3673 host_cc_default="gcc"
3674 doxygen_default="doxygen"
3675 install="install"
3676 ln_s_default="ln -s -f"
3677 nm_default="nm -g"
3678 pkg_config_default=pkg-config
3679 ranlib_default="ranlib"
3680 strip_default="strip"
3681 version_script='--version-script'
3682 objformat="elf32"
3683 x86asmexe_default="nasm"
3684 windres_default="windres"
3685 striptype="direct"
3686
3687 # OS
3688 target_os_default=$(tolower $(uname -s))
3689 host_os=$target_os_default
3690
3691 # machine
3692 if test "$target_os_default" = aix; then
3693     arch_default=$(uname -p)
3694     strip_default="strip -X32_64"
3695     nm_default="nm -g -X32_64"
3696 else
3697     arch_default=$(uname -m)
3698 fi
3699 cpu="generic"
3700 intrinsics="none"
3701
3702 # configurable options
3703 enable $PROGRAM_LIST
3704 enable $DOCUMENT_LIST
3705 enable $EXAMPLE_LIST
3706 enable $(filter_out avresample $LIBRARY_LIST)
3707 enable stripping
3708
3709 enable asm
3710 enable debug
3711 enable doc
3712 enable faan faandct faanidct
3713 enable optimizations
3714 enable runtime_cpudetect
3715 enable safe_bitstream_reader
3716 enable static
3717 enable swscale_alpha
3718 enable valgrind_backtrace
3719
3720 sws_max_filter_size_default=256
3721 set_default sws_max_filter_size
3722
3723 # internal components are enabled by default
3724 enable $EXTRALIBS_LIST
3725
3726 # Avoid external, non-system, libraries getting enabled by dependency resolution
3727 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3728
3729 # build settings
3730 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3731 LIBPREF="lib"
3732 LIBSUF=".a"
3733 FULLNAME='$(NAME)$(BUILDSUF)'
3734 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3735 SLIBPREF="lib"
3736 SLIBSUF=".so"
3737 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3738 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3739 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3740 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3741 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3742 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3743 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3744
3745 asflags_filter=echo
3746 cflags_filter=echo
3747 ldflags_filter=echo
3748
3749 AS_C='-c'
3750 AS_O='-o $@'
3751 CC_C='-c'
3752 CC_E='-E -o $@'
3753 CC_O='-o $@'
3754 CXX_C='-c'
3755 CXX_O='-o $@'
3756 OBJCC_C='-c'
3757 OBJCC_E='-E -o $@'
3758 OBJCC_O='-o $@'
3759 X86ASM_O='-o $@'
3760 LD_O='-o $@'
3761 LD_LIB='-l%'
3762 LD_PATH='-L'
3763 HOSTCC_C='-c'
3764 HOSTCC_E='-E -o $@'
3765 HOSTCC_O='-o $@'
3766 HOSTLD_O='-o $@'
3767 NVCC_C='-c'
3768 NVCC_O='-o $@'
3769
3770 host_extralibs='-lm'
3771 host_cflags_filter=echo
3772 host_ldflags_filter=echo
3773
3774 target_path='$(CURDIR)'
3775
3776 # since the object filename is not given with the -MM flag, the compiler
3777 # is only able to print the basename, and we must add the path ourselves
3778 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3779 DEPFLAGS='-MM'
3780
3781 mkdir -p ffbuild
3782
3783 # find source path
3784 if test -f configure; then
3785     source_path=.
3786 elif test -f src/configure; then
3787     source_path=src
3788 else
3789     source_path=$(cd $(dirname "$0"); pwd)
3790     case "$source_path" in
3791         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3792     esac
3793     test -e "$source_path/config.h" &&
3794         die "Out of tree builds are impossible with config.h in source dir."
3795 fi
3796
3797 for v in "$@"; do
3798     r=${v#*=}
3799     l=${v%"$r"}
3800     r=$(sh_quote "$r")
3801     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3802 done
3803
3804 find_things_extern(){
3805     thing=$1
3806     pattern=$2
3807     file=$source_path/$3
3808     out=${4:-$thing}
3809     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3810 }
3811
3812 find_filters_extern(){
3813     file=$source_path/$1
3814     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3815 }
3816
3817 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3818 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3819 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3820 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3821 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3822 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3823 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3824 CODEC_LIST="
3825     $ENCODER_LIST
3826     $DECODER_LIST
3827 "
3828 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3829 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3830 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3831 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3832
3833 AVCODEC_COMPONENTS_LIST="
3834     $BSF_LIST
3835     $DECODER_LIST
3836     $ENCODER_LIST
3837     $HWACCEL_LIST
3838     $PARSER_LIST
3839 "
3840
3841 AVDEVICE_COMPONENTS_LIST="
3842     $INDEV_LIST
3843     $OUTDEV_LIST
3844 "
3845
3846 AVFILTER_COMPONENTS_LIST="
3847     $FILTER_LIST
3848 "
3849
3850 AVFORMAT_COMPONENTS_LIST="
3851     $DEMUXER_LIST
3852     $MUXER_LIST
3853     $PROTOCOL_LIST
3854 "
3855
3856 ALL_COMPONENTS="
3857     $AVCODEC_COMPONENTS_LIST
3858     $AVDEVICE_COMPONENTS_LIST
3859     $AVFILTER_COMPONENTS_LIST
3860     $AVFORMAT_COMPONENTS_LIST
3861 "
3862
3863 for n in $COMPONENT_LIST; do
3864     v=$(toupper ${n%s})_LIST
3865     eval enable \$$v
3866     eval ${n}_if_any="\$$v"
3867 done
3868
3869 enable $ARCH_EXT_LIST
3870
3871 die_unknown(){
3872     echo "Unknown option \"$1\"."
3873     echo "See $0 --help for available options."
3874     exit 1
3875 }
3876
3877 print_in_columns() {
3878     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3879     {
3880         num_cols = width > col_width ? int(width / col_width) : 1;
3881         num_rows = int((NF + num_cols-1) / num_cols);
3882         y = x = 1;
3883         for (y = 1; y <= num_rows; y++) {
3884             i = y;
3885             for (x = 1; x <= num_cols; x++) {
3886                 if (i <= NF) {
3887                   line = sprintf("%s%-" col_width "s", line, $i);
3888                 }
3889                 i = i + num_rows;
3890             }
3891             print line; line = "";
3892         }
3893     }' | sed 's/ *$//'
3894 }
3895
3896 show_list() {
3897     suffix=_$1
3898     shift
3899     echo $* | sed s/$suffix//g | print_in_columns
3900     exit 0
3901 }
3902
3903 rand_list(){
3904     IFS=', '
3905     set -- $*
3906     unset IFS
3907     for thing; do
3908         comp=${thing%:*}
3909         prob=${thing#$comp}
3910         prob=${prob#:}
3911         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3912         echo "prob ${prob:-0.5}"
3913         printf '%s\n' $comp
3914     done
3915 }
3916
3917 do_random(){
3918     action=$1
3919     shift
3920     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3921     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3922 }
3923
3924 for opt do
3925     optval="${opt#*=}"
3926     case "$opt" in
3927         --extra-ldflags=*)
3928             add_ldflags $optval
3929         ;;
3930         --extra-ldexeflags=*)
3931             add_ldexeflags $optval
3932         ;;
3933         --extra-ldsoflags=*)
3934             add_ldsoflags $optval
3935         ;;
3936         --extra-ldlibflags=*)
3937             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3938                  "removed in the future. Use --extra-ldsoflags instead."
3939             add_ldsoflags $optval
3940         ;;
3941         --extra-libs=*)
3942             add_extralibs $optval
3943         ;;
3944         --disable-devices)
3945             disable $INDEV_LIST $OUTDEV_LIST
3946         ;;
3947         --enable-debug=*)
3948             debuglevel="$optval"
3949         ;;
3950         --disable-programs)
3951             disable $PROGRAM_LIST
3952         ;;
3953         --disable-everything)
3954             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3955         ;;
3956         --disable-all)
3957             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3958             disable $LIBRARY_LIST $PROGRAM_LIST doc
3959             enable avutil
3960         ;;
3961         --enable-random|--disable-random)
3962             action=${opt%%-random}
3963             do_random ${action#--} $COMPONENT_LIST
3964         ;;
3965         --enable-random=*|--disable-random=*)
3966             action=${opt%%-random=*}
3967             do_random ${action#--} $optval
3968         ;;
3969         --enable-sdl)
3970             enable sdl2
3971         ;;
3972         --enable-*=*|--disable-*=*)
3973             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3974             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3975             eval list=\$$(toupper $thing)_LIST
3976             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3977             list=$(filter "$name" $list)
3978             [ "$list" = "" ] && warn "Option $opt did not match anything"
3979             test $action = enable && warn_if_gets_disabled $list
3980             $action $list
3981         ;;
3982         --enable-yasm|--disable-yasm)
3983             warn "The ${opt} option is only provided for compatibility and will be\n"\
3984                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3985             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3986         ;;
3987         --yasmexe=*)
3988             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3989                  "removed in the future. Use --x86asmexe instead."
3990             x86asmexe="$optval"
3991         ;;
3992         --enable-?*|--disable-?*)
3993             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3994             if is_in $option $COMPONENT_LIST; then
3995                 test $action = disable && action=unset
3996                 eval $action \$$(toupper ${option%s})_LIST
3997             elif is_in $option $CMDLINE_SELECT; then
3998                 $action $option
3999             else
4000                 die_unknown $opt
4001             fi
4002         ;;
4003         --list-*)
4004             NAME="${opt#--list-}"
4005             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4006             NAME=${NAME%s}
4007             eval show_list $NAME \$$(toupper $NAME)_LIST
4008         ;;
4009         --help|-h) show_help
4010         ;;
4011         --quiet|-q) quiet=yes
4012         ;;
4013         --fatal-warnings) enable fatal_warnings
4014         ;;
4015         --libfuzzer=*)
4016             libfuzzer_path="$optval"
4017         ;;
4018         *)
4019             optname="${opt%%=*}"
4020             optname="${optname#--}"
4021             optname=$(echo "$optname" | sed 's/-/_/g')
4022             if is_in $optname $CMDLINE_SET; then
4023                 eval $optname='$optval'
4024             elif is_in $optname $CMDLINE_APPEND; then
4025                 append $optname "$optval"
4026             else
4027                 die_unknown $opt
4028             fi
4029         ;;
4030     esac
4031 done
4032
4033 for e in $env; do
4034     eval "export $e"
4035 done
4036
4037 if disabled autodetect; then
4038
4039     # Unless iconv is explicitely disabled by the user, we still want to probe
4040     # for the iconv from the libc.
4041     disabled iconv || enable libc_iconv
4042
4043     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4044     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4045 fi
4046 # Mark specifically enabled, but normally autodetected libraries as requested.
4047 for lib in $AUTODETECT_LIBS; do
4048     enabled $lib && request $lib
4049 done
4050 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4051 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4052 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4053
4054 disabled logging && logfile=/dev/null
4055
4056 # command line configuration sanity checks
4057
4058 # we need to build at least one lib type
4059 if ! enabled_any static shared; then
4060     cat <<EOF
4061 At least one library type must be built.
4062 Specify --enable-static to build the static libraries or --enable-shared to
4063 build the shared libraries as well. To only build the shared libraries specify
4064 --disable-static in addition to --enable-shared.
4065 EOF
4066     exit 1
4067 fi
4068
4069 die_license_disabled() {
4070     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4071 }
4072
4073 die_license_disabled_gpl() {
4074     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4075 }
4076
4077 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4078 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4079
4080 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4081 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4082
4083 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4084
4085 if enabled nonfree; then
4086     license="nonfree and unredistributable"
4087 elif enabled gplv3; then
4088     license="GPL version 3 or later"
4089 elif enabled lgplv3; then
4090     license="LGPL version 3 or later"
4091 elif enabled gpl; then
4092     license="GPL version 2 or later"
4093 else
4094     license="LGPL version 2.1 or later"
4095 fi
4096
4097 enabled_all gnutls openssl &&
4098     die "GnuTLS and OpenSSL must not be enabled at the same time."
4099
4100 enabled_all gnutls mbedtls &&
4101     die "GnuTLS and mbedTLS must not be enabled at the same time."
4102
4103 enabled_all openssl mbedtls &&
4104     die "OpenSSL and mbedTLS must not be enabled at the same time."
4105
4106 # Disable all the library-specific components if the library itself
4107 # is disabled, see AVCODEC_LIST and following _LIST variables.
4108
4109 disable_components(){
4110     disabled ${1} && disable $(
4111         eval components="\$$(toupper ${1})_COMPONENTS"
4112         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4113     )
4114 }
4115
4116 map 'disable_components $v' $LIBRARY_LIST
4117
4118 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4119 set >> $logfile
4120
4121 test -n "$valgrind" && toolchain="valgrind-memcheck"
4122
4123 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4124     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4125     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4126 }
4127
4128 case "$toolchain" in
4129     *-asan)
4130         cc_default="${toolchain%-asan}"
4131         add_cflags  -fsanitize=address
4132         add_ldflags -fsanitize=address
4133     ;;
4134     *-msan)
4135         cc_default="${toolchain%-msan}"
4136         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4137         add_ldflags -fsanitize=memory
4138     ;;
4139     *-tsan)
4140         cc_default="${toolchain%-tsan}"
4141         add_cflags  -fsanitize=thread
4142         add_ldflags -fsanitize=thread
4143         case "$toolchain" in
4144             gcc-tsan)
4145                 add_cflags  -fPIC
4146                 add_ldflags -fPIC
4147                 ;;
4148         esac
4149     ;;
4150     *-usan)
4151         cc_default="${toolchain%-usan}"
4152         add_cflags  -fsanitize=undefined
4153         add_ldflags -fsanitize=undefined
4154     ;;
4155     valgrind-*)
4156         target_exec_default="valgrind"
4157         case "$toolchain" in
4158             valgrind-massif)
4159                 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"
4160                 ;;
4161             valgrind-memcheck)
4162                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4163                 ;;
4164         esac
4165     ;;
4166     msvc)
4167         # Check whether the current MSVC version needs the C99 converter.
4168         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4169         # support enough of C99 to build ffmpeg. Default to the new
4170         # behaviour if the regexp was unable to match anything, since this
4171         # successfully parses the version number of existing supported
4172         # versions that require the converter (MSVC 2010 and 2012).
4173         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4174         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4175             cc_default="cl.exe"
4176             cxx_default="cl.exe"
4177         else
4178             die "Unsupported MSVC version (2013 or newer required)"
4179         fi
4180         ld_default="$source_path/compat/windows/mslink"
4181         nm_default="dumpbin.exe -symbols"
4182         ar_default="lib.exe"
4183         case "$arch" in
4184         aarch64|arm64)
4185             as_default="armasm64.exe"
4186             ;;
4187         arm*)
4188             as_default="armasm.exe"
4189             ;;
4190         esac
4191         target_os_default="win32"
4192         # Use a relative path for TMPDIR. This makes sure all the
4193         # ffconf temp files are written with a relative path, avoiding
4194         # issues with msys/win32 path conversion for MSVC parameters
4195         # such as -Fo<file> or -out:<file>.
4196         TMPDIR=.
4197     ;;
4198     icl)
4199         cc_default="icl"
4200         ld_default="xilink"
4201         nm_default="dumpbin -symbols"
4202         ar_default="xilib"
4203         target_os_default="win32"
4204         TMPDIR=.
4205     ;;
4206     gcov)
4207         add_cflags  -fprofile-arcs -ftest-coverage
4208         add_ldflags -fprofile-arcs -ftest-coverage
4209     ;;
4210     llvm-cov)
4211         add_cflags -fprofile-arcs -ftest-coverage
4212         add_ldflags --coverage
4213     ;;
4214     hardened)
4215         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4216         add_cflags   -fno-strict-overflow -fstack-protector-all
4217         add_ldflags  -Wl,-z,relro -Wl,-z,now
4218         add_cflags   -fPIE
4219         add_ldexeflags -fPIE -pie
4220     ;;
4221     ?*)
4222         die "Unknown toolchain $toolchain"
4223     ;;
4224 esac
4225
4226 if test -n "$cross_prefix"; then
4227     test -n "$arch" && test -n "$target_os" ||
4228         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4229     enable cross_compile
4230 fi
4231
4232 set_default target_os
4233 if test "$target_os" = android; then
4234     cc_default="clang"
4235 fi
4236
4237 ar_default="${cross_prefix}${ar_default}"
4238 cc_default="${cross_prefix}${cc_default}"
4239 cxx_default="${cross_prefix}${cxx_default}"
4240 nm_default="${cross_prefix}${nm_default}"
4241 pkg_config_default="${cross_prefix}${pkg_config_default}"
4242 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4243     ranlib_default="${cross_prefix}${ranlib_default} -D"
4244 else
4245     ranlib_default="${cross_prefix}${ranlib_default}"
4246 fi
4247 strip_default="${cross_prefix}${strip_default}"
4248 windres_default="${cross_prefix}${windres_default}"
4249
4250 sysinclude_default="${sysroot}/usr/include"
4251
4252 if enabled cuda_sdk; then
4253     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4254     enable cuda_nvcc
4255 fi
4256
4257 if enabled cuda_nvcc; then
4258     nvcc_default="nvcc"
4259     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4260 else
4261     nvcc_default="clang"
4262     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4263     NVCC_C=""
4264 fi
4265
4266 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4267     target_exec x86asmexe nvcc
4268 enabled cross_compile || host_cc_default=$cc
4269 set_default host_cc
4270
4271 pkg_config_fail_message=""
4272 if ! $pkg_config --version >/dev/null 2>&1; then
4273     warn "$pkg_config not found, library detection may fail."
4274     pkg_config=false
4275 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4276     pkg_config_fail_message="
4277 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4278 fi
4279
4280 if test $doxygen != $doxygen_default && \
4281   ! $doxygen --version >/dev/null 2>&1; then
4282     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4283 fi
4284
4285 exesuf() {
4286     case $1 in
4287         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4288     esac
4289 }
4290
4291 EXESUF=$(exesuf $target_os)
4292 HOSTEXESUF=$(exesuf $host_os)
4293
4294 # set temporary file name
4295 : ${TMPDIR:=$TEMPDIR}
4296 : ${TMPDIR:=$TMP}
4297 : ${TMPDIR:=/tmp}
4298
4299 if [ -n "$tempprefix" ] ; then
4300     mktemp(){
4301         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4302         echo "$tmpname"
4303         mkdir "$tmpname"
4304     }
4305 elif ! test_cmd mktemp -u XXXXXX; then
4306     # simple replacement for missing mktemp
4307     # NOT SAFE FOR GENERAL USE
4308     mktemp(){
4309         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4310         echo "$tmpname"
4311         mkdir "$tmpname"
4312     }
4313 fi
4314
4315 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4316     die "Unable to create temporary directory in $TMPDIR."
4317
4318 tmpfile(){
4319     tmp="${FFTMPDIR}/test"$2
4320     (set -C; exec > $tmp) 2> /dev/null ||
4321         die "Unable to create temporary file in $FFTMPDIR."
4322     eval $1=$tmp
4323 }
4324
4325 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4326 trap 'exit 2' INT
4327
4328 tmpfile TMPASM .asm
4329 tmpfile TMPC   .c
4330 tmpfile TMPCPP .cpp
4331 tmpfile TMPE   $EXESUF
4332 tmpfile TMPH   .h
4333 tmpfile TMPM   .m
4334 tmpfile TMPCU  .cu
4335 tmpfile TMPO   .o
4336 tmpfile TMPS   .S
4337 tmpfile TMPSH  .sh
4338 tmpfile TMPV   .ver
4339
4340 unset -f mktemp
4341
4342 chmod +x $TMPE
4343
4344 # make sure we can execute files in $TMPDIR
4345 cat > $TMPSH 2>> $logfile <<EOF
4346 #! /bin/sh
4347 EOF
4348 chmod +x $TMPSH >> $logfile 2>&1
4349 if ! $TMPSH >> $logfile 2>&1; then
4350     cat <<EOF
4351 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4352 variable to another directory and make sure that it is not mounted noexec.
4353 EOF
4354     die "Sanity test failed."
4355 fi
4356
4357 armasm_flags(){
4358     for flag; do
4359         case $flag in
4360             # Filter out MSVC cl.exe options from cflags that shouldn't
4361             # be passed to gas-preprocessor
4362             -M[TD]*)                                            ;;
4363             *)                  echo $flag                      ;;
4364         esac
4365    done
4366 }
4367
4368 cparser_flags(){
4369     for flag; do
4370         case $flag in
4371             -Wno-switch)             echo -Wno-switch-enum ;;
4372             -Wno-format-zero-length) ;;
4373             -Wdisabled-optimization) ;;
4374             -Wno-pointer-sign)       echo -Wno-other ;;
4375             *)                       echo $flag ;;
4376         esac
4377     done
4378 }
4379
4380 msvc_common_flags(){
4381     for flag; do
4382         case $flag in
4383             # In addition to specifying certain flags under the compiler
4384             # specific filters, they must be specified here as well or else the
4385             # generic catch all at the bottom will print the original flag.
4386             -Wall)                ;;
4387             -Wextra)              ;;
4388             -std=c99)             ;;
4389             # Common flags
4390             -fomit-frame-pointer) ;;
4391             -g)                   echo -Z7 ;;
4392             -fno-math-errno)      ;;
4393             -fno-common)          ;;
4394             -fno-signed-zeros)    ;;
4395             -fPIC)                ;;
4396             -mthumb)              ;;
4397             -march=*)             ;;
4398             -lz)                  echo zlib.lib ;;
4399             -lx264)               echo libx264.lib ;;
4400             -lstdc++)             ;;
4401             -l*)                  echo ${flag#-l}.lib ;;
4402             -LARGEADDRESSAWARE)   echo $flag ;;
4403             -L*)                  echo -libpath:${flag#-L} ;;
4404             *)                    echo $flag ;;
4405         esac
4406     done
4407 }
4408
4409 msvc_flags(){
4410     msvc_common_flags "$@"
4411     for flag; do
4412         case $flag in
4413             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4414                                        -wd4554 ;;
4415             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4416                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4417                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4418                                        -wd4307 \
4419                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4420         esac
4421     done
4422 }
4423
4424 icl_flags(){
4425     msvc_common_flags "$@"
4426     for flag; do
4427         case $flag in
4428             # Despite what Intel's documentation says -Wall, which is supported
4429             # on Windows, does enable remarks so disable them here.
4430             -Wall)                echo $flag -Qdiag-disable:remark ;;
4431             -std=c99)             echo -Qstd=c99 ;;
4432             -flto)                echo -ipo ;;
4433         esac
4434     done
4435 }
4436
4437 icc_flags(){
4438     for flag; do
4439         case $flag in
4440             -flto)                echo -ipo ;;
4441             *)                    echo $flag ;;
4442         esac
4443     done
4444 }
4445
4446 suncc_flags(){
4447     for flag; do
4448         case $flag in
4449             -march=*|-mcpu=*)
4450                 case "${flag#*=}" in
4451                     native)                   echo -xtarget=native       ;;
4452                     v9|niagara)               echo -xarch=sparc          ;;
4453                     ultrasparc)               echo -xarch=sparcvis       ;;
4454                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4455                     i586|pentium)             echo -xchip=pentium        ;;
4456                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4457                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4458                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4459                     pentium4*)          echo -xtarget=pentium4           ;;
4460                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4461                     *-sse3)             echo -xarch=sse3                 ;;
4462                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4463                     bonnell)                   echo -xarch=ssse3         ;;
4464                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4465                     westmere)                  echo -xtarget=westmere    ;;
4466                     silvermont)                echo -xarch=sse4_2        ;;
4467                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4468                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4469                                                echo -xarch=avx           ;;
4470                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4471                     btver1)                    echo -xarch=amdsse4a      ;;
4472                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4473                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4474                     k8|opteron|athlon64|athlon-fx)
4475                                                echo -xarch=sse2a         ;;
4476                     athlon*)                   echo -xarch=pentium_proa  ;;
4477                 esac
4478                 ;;
4479             -std=c99)             echo -xc99              ;;
4480             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4481             -fPIC)                echo -KPIC -xcode=pic32 ;;
4482             -W*,*)                echo $flag              ;;
4483             -f*-*|-W*|-mimpure-text)                      ;;
4484             -shared)              echo -G                 ;;
4485             *)                    echo $flag              ;;
4486         esac
4487     done
4488 }
4489
4490 probe_cc(){
4491     pfx=$1
4492     _cc=$2
4493     first=$3
4494
4495     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4496     unset _ld_o _ldflags _ld_lib _ld_path
4497     unset _depflags _DEPCMD _DEPFLAGS
4498     _flags_filter=echo
4499
4500     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4501         true # no-op to avoid reading stdin in following checks
4502     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4503         _type=llvm_gcc
4504         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4505         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4506         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4507         _cflags_speed='-O3'
4508         _cflags_size='-Os'
4509     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4510         _type=gcc
4511         gcc_version=$($_cc --version | head -n1)
4512         gcc_basever=$($_cc -dumpversion)
4513         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4514         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4515         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4516         case $gcc_basever in
4517             2) ;;
4518             2.*) ;;
4519             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4520         esac
4521         if [ "$first" = true ]; then
4522             case $gcc_basever in
4523                 4.2*)
4524                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4525             esac
4526         fi
4527         _cflags_speed='-O3'
4528         _cflags_size='-Os'
4529     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4530         _type=icc
4531         _ident=$($_cc --version | head -n1)
4532         _depflags='-MMD'
4533         _cflags_speed='-O3'
4534         _cflags_size='-Os'
4535         _cflags_noopt='-O1'
4536         _flags_filter=icc_flags
4537     elif $_cc -v 2>&1 | grep -q xlc; then
4538         _type=xlc
4539         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4540         _cflags_speed='-O5'
4541         _cflags_size='-O5 -qcompact'
4542     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4543         test -d "$sysroot" || die "No valid sysroot specified."
4544         _type=armcc
4545         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4546         armcc_conf="$PWD/armcc.conf"
4547         $_cc --arm_linux_configure                 \
4548              --arm_linux_config_file="$armcc_conf" \
4549              --configure_sysroot="$sysroot"        \
4550              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4551              die "Error creating armcc configuration file."
4552         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4553         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4554         as_default="${cross_prefix}gcc"
4555         _depflags='-MMD'
4556         _cflags_speed='-O3'
4557         _cflags_size='-Os'
4558     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4559         _type=clang
4560         _ident=$($_cc --version 2>/dev/null | head -n1)
4561         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4562         _cflags_speed='-O3'
4563         _cflags_size='-Oz'
4564     elif $_cc -V 2>&1 | grep -q Sun; then
4565         _type=suncc
4566         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4567         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4568         _DEPFLAGS='-xM1 -xc99'
4569         _ldflags='-std=c99'
4570         _cflags_speed='-O5'
4571         _cflags_size='-O5 -xspace'
4572         _flags_filter=suncc_flags
4573     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4574         _type=pathscale
4575         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4576         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4577         _cflags_speed='-O2'
4578         _cflags_size='-Os'
4579         _flags_filter='filter_out -Wdisabled-optimization'
4580     elif $_cc -v 2>&1 | grep -q Open64; then
4581         _type=open64
4582         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4583         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4584         _cflags_speed='-O2'
4585         _cflags_size='-Os'
4586         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4587     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4588         _type=armasm
4589         _ident=$($_cc | head -n1)
4590         # 4509: "This form of conditional instruction is deprecated"
4591         _flags="-nologo -ignore 4509"
4592         _flags_filter=armasm_flags
4593     elif $_cc 2>&1 | grep -q Intel; then
4594         _type=icl
4595         _ident=$($_cc 2>&1 | head -n1)
4596         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4597         # Not only is O3 broken on 13.x+ but it is slower on all previous
4598         # versions (tested) as well.
4599         _cflags_speed="-O2"
4600         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4601         if $_cc 2>&1 | grep -q Linker; then
4602             _ld_o='-out:$@'
4603         else
4604             _ld_o='-Fe$@'
4605         fi
4606         _cc_o='-Fo$@'
4607         _cc_e='-P'
4608         _flags_filter=icl_flags
4609         _ld_lib='lib%.a'
4610         _ld_path='-libpath:'
4611         # -Qdiag-error to make icl error when seeing certain unknown arguments
4612         _flags='-nologo -Qdiag-error:4044,10157'
4613         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4614         # with MSVC which enables it by default.
4615         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4616         disable stripping
4617     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4618         # lld can emulate multiple different linkers; in ms link.exe mode,
4619         # the -? parameter gives the help output which contains an identifyable
4620         # string, while it gives an error in other modes.
4621         _type=lld-link
4622         # The link.exe mode doesn't have a switch for getting the version,
4623         # but we can force it back to gnu mode and get the version from there.
4624         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4625         _ld_o='-out:$@'
4626         _flags_filter=msvc_flags
4627         _ld_lib='lib%.a'
4628         _ld_path='-libpath:'
4629     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4630         _type=msvc
4631         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4632         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4633         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4634         _cflags_speed="-O2"
4635         _cflags_size="-O1"
4636         _cflags_noopt="-O1"
4637         if $_cc -nologo- 2>&1 | grep -q Linker; then
4638             _ld_o='-out:$@'
4639         else
4640             _ld_o='-Fe$@'
4641         fi
4642         _cc_o='-Fo$@'
4643         _cc_e='-P -Fi$@'
4644         _flags_filter=msvc_flags
4645         _ld_lib='lib%.a'
4646         _ld_path='-libpath:'
4647         _flags='-nologo'
4648         disable stripping
4649     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4650         _type=cparser
4651         _ident=$($_cc --version | head -n1)
4652         _depflags='-MMD'
4653         _cflags_speed='-O4'
4654         _cflags_size='-O2'
4655         _flags_filter=cparser_flags
4656     fi
4657
4658     eval ${pfx}_type=\$_type
4659     eval ${pfx}_ident=\$_ident
4660 }
4661
4662 set_ccvars(){
4663     eval ${1}_C=\${_cc_c-\${${1}_C}}
4664     eval ${1}_E=\${_cc_e-\${${1}_E}}
4665     eval ${1}_O=\${_cc_o-\${${1}_O}}
4666
4667     if [ -n "$_depflags" ]; then
4668         eval ${1}_DEPFLAGS=\$_depflags
4669     else
4670         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4671         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4672         eval DEP${1}FLAGS=\$_flags
4673     fi
4674 }
4675
4676 probe_cc cc "$cc" "true"
4677 cflags_filter=$_flags_filter
4678 cflags_speed=$_cflags_speed
4679 cflags_size=$_cflags_size
4680 cflags_noopt=$_cflags_noopt
4681 add_cflags $_flags $_cflags
4682 cc_ldflags=$_ldflags
4683 set_ccvars CC
4684 set_ccvars CXX
4685
4686 probe_cc hostcc "$host_cc"
4687 host_cflags_filter=$_flags_filter
4688 host_cflags_speed=$_cflags_speed
4689 add_host_cflags  $_flags $_cflags
4690 set_ccvars HOSTCC
4691
4692 test -n "$cc_type" && enable $cc_type ||
4693     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4694
4695 : ${as_default:=$cc}
4696 : ${objcc_default:=$cc}
4697 : ${dep_cc_default:=$cc}
4698 : ${ld_default:=$cc}
4699 : ${host_ld_default:=$host_cc}
4700 set_default ar as objcc dep_cc ld ln_s host_ld windres
4701
4702 probe_cc as "$as"
4703 asflags_filter=$_flags_filter
4704 add_asflags $_flags $_cflags
4705 set_ccvars AS
4706
4707 probe_cc objcc "$objcc"
4708 objcflags_filter=$_flags_filter
4709 add_objcflags $_flags $_cflags
4710 set_ccvars OBJC
4711
4712 probe_cc ld "$ld"
4713 ldflags_filter=$_flags_filter
4714 add_ldflags $_flags $_ldflags
4715 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4716 LD_O=${_ld_o-$LD_O}
4717 LD_LIB=${_ld_lib-$LD_LIB}
4718 LD_PATH=${_ld_path-$LD_PATH}
4719
4720 probe_cc hostld "$host_ld"
4721 host_ldflags_filter=$_flags_filter
4722 add_host_ldflags $_flags $_ldflags
4723 HOSTLD_O=${_ld_o-$HOSTLD_O}
4724
4725 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4726     probe_cc depcc "$dep_cc"
4727     CCDEP=${_DEPCMD:-$DEPCMD}
4728     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4729     DEPCCFLAGS=$_flags
4730 fi
4731
4732 if $ar 2>&1 | grep -q Microsoft; then
4733     arflags="-nologo"
4734     ar_o='-out:$@'
4735 elif $ar 2>&1 | grep -q "\[D\] "; then
4736     arflags="rcD"
4737     ar_o='$@'
4738 else
4739     arflags="rc"
4740     ar_o='$@'
4741 fi
4742
4743 add_cflags $extra_cflags
4744 add_cxxflags $extra_cxxflags
4745 add_objcflags $extra_objcflags
4746 add_asflags $extra_cflags
4747
4748 if test -n "$sysroot"; then
4749     case "$cc_type" in
4750         gcc|llvm_gcc|clang)
4751             add_cppflags --sysroot="$sysroot"
4752             add_ldflags --sysroot="$sysroot"
4753         ;;
4754     esac
4755 fi
4756
4757 if test "$cpu" = host; then
4758     enabled cross_compile &&
4759         die "--cpu=host makes no sense when cross-compiling."
4760
4761     case "$cc_type" in
4762         gcc|llvm_gcc)
4763             check_native(){
4764                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4765                 sed -n "/cc1.*$1=/{
4766                             s/.*$1=\\([^ ]*\\).*/\\1/
4767                             p
4768                             q
4769                         }" $TMPE
4770             }
4771             cpu=$(check_native -march || check_native -mcpu)
4772         ;;
4773         clang)
4774             check_native(){
4775                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4776                 sed -n "/cc1.*-target-cpu /{
4777                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4778                             p
4779                             q
4780                         }" $TMPE
4781             }
4782             cpu=$(check_native -march)
4783         ;;
4784     esac
4785
4786     test "${cpu:-host}" = host &&
4787         die "--cpu=host not supported with compiler $cc"
4788 fi
4789
4790 # Deal with common $arch aliases
4791 case "$arch" in
4792     aarch64|arm64)
4793         arch="aarch64"
4794     ;;
4795     arm*|iPad*|iPhone*)
4796         arch="arm"
4797     ;;
4798     mips*|IP*)
4799         case "$arch" in
4800         *el)
4801             add_cppflags -EL
4802             add_ldflags -EL
4803         ;;
4804         *eb)
4805             add_cppflags -EB
4806             add_ldflags -EB
4807         ;;
4808         esac
4809         arch="mips"
4810     ;;
4811     parisc*|hppa*)
4812         arch="parisc"
4813     ;;
4814     "Power Macintosh"|ppc*|powerpc*)
4815         arch="ppc"
4816     ;;
4817     s390|s390x)
4818         arch="s390"
4819     ;;
4820     sh4|sh)
4821         arch="sh4"
4822     ;;
4823     sun4*|sparc*)
4824         arch="sparc"
4825     ;;
4826     tilegx|tile-gx)
4827         arch="tilegx"
4828     ;;
4829     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4830         arch="x86"
4831     ;;
4832 esac
4833
4834 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4835 enable $arch
4836
4837 # Add processor-specific flags
4838 if enabled aarch64; then
4839
4840     case $cpu in
4841         armv*)
4842             cpuflags="-march=$cpu"
4843         ;;
4844         *)
4845             cpuflags="-mcpu=$cpu"
4846         ;;
4847     esac
4848
4849 elif enabled alpha; then
4850
4851     cpuflags="-mcpu=$cpu"
4852
4853 elif enabled arm; then
4854
4855     check_arm_arch() {
4856         test_cpp_condition stddef.h \
4857             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4858             $cpuflags
4859     }
4860
4861     probe_arm_arch() {
4862         if   check_arm_arch 4;        then echo armv4
4863         elif check_arm_arch 4T;       then echo armv4t
4864         elif check_arm_arch 5;        then echo armv5
4865         elif check_arm_arch 5E;       then echo armv5e
4866         elif check_arm_arch 5T;       then echo armv5t
4867         elif check_arm_arch 5TE;      then echo armv5te
4868         elif check_arm_arch 5TEJ;     then echo armv5te
4869         elif check_arm_arch 6;        then echo armv6
4870         elif check_arm_arch 6J;       then echo armv6j
4871         elif check_arm_arch 6K;       then echo armv6k
4872         elif check_arm_arch 6Z;       then echo armv6z
4873         elif check_arm_arch 6KZ;      then echo armv6zk
4874         elif check_arm_arch 6ZK;      then echo armv6zk
4875         elif check_arm_arch 6T2;      then echo armv6t2
4876         elif check_arm_arch 7;        then echo armv7
4877         elif check_arm_arch 7A  7_A;  then echo armv7-a
4878         elif check_arm_arch 7S;       then echo armv7-a
4879         elif check_arm_arch 7R  7_R;  then echo armv7-r
4880         elif check_arm_arch 7M  7_M;  then echo armv7-m
4881         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4882         elif check_arm_arch 8A  8_A;  then echo armv8-a
4883         fi
4884     }
4885
4886     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4887
4888     case $cpu in
4889         armv*)
4890             cpuflags="-march=$cpu"
4891             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4892         ;;
4893         *)
4894             cpuflags="-mcpu=$cpu"
4895             case $cpu in
4896                 cortex-a*)                               subarch=armv7a  ;;
4897                 cortex-r*)                               subarch=armv7r  ;;
4898                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4899                 arm11*)                                  subarch=armv6   ;;
4900                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4901                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4902                 *)                             subarch=$(probe_arm_arch) ;;
4903             esac
4904         ;;
4905     esac
4906
4907     case "$subarch" in
4908         armv5t*)    enable fast_clz                ;;
4909         armv[6-8]*)
4910             enable fast_clz
4911             disabled fast_unaligned || enable fast_unaligned
4912             ;;
4913     esac
4914
4915 elif enabled avr32; then
4916
4917     case $cpu in
4918         ap7[02]0[0-2])
4919             subarch="avr32_ap"
4920             cpuflags="-mpart=$cpu"
4921         ;;
4922         ap)
4923             subarch="avr32_ap"
4924             cpuflags="-march=$cpu"
4925         ;;
4926         uc3[ab]*)
4927             subarch="avr32_uc"
4928             cpuflags="-mcpu=$cpu"
4929         ;;
4930         uc)
4931             subarch="avr32_uc"
4932             cpuflags="-march=$cpu"
4933         ;;
4934     esac
4935
4936 elif enabled bfin; then
4937
4938     cpuflags="-mcpu=$cpu"
4939
4940 elif enabled mips; then
4941
4942     cpuflags="-march=$cpu"
4943
4944     if [ "$cpu" != "generic" ]; then
4945         disable mips32r2
4946         disable mips32r5
4947         disable mips64r2
4948         disable mips32r6
4949         disable mips64r6
4950         disable loongson2
4951         disable loongson3
4952
4953         case $cpu in
4954             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4955                 enable mips32r2
4956                 disable msa
4957             ;;
4958             p5600|i6400|p6600)
4959                 disable mipsdsp
4960                 disable mipsdspr2
4961             ;;
4962             loongson*)
4963                 enable loongson2
4964                 enable loongson3
4965                 enable local_aligned
4966                 enable simd_align_16
4967                 enable fast_64bit
4968                 enable fast_clz
4969                 enable fast_cmov
4970                 enable fast_unaligned
4971                 disable aligned_stack
4972                 disable mipsdsp
4973                 disable mipsdspr2
4974                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4975                 if [ $cc == gcc ]; then
4976                     gcc_version=$(gcc -dumpversion)
4977                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4978                         expensive_optimization_flag=""
4979                     else
4980                         expensive_optimization_flag="-fno-expensive-optimizations"
4981                     fi
4982                 fi
4983                 case $cpu in
4984                     loongson3*)
4985                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4986                     ;;
4987                     loongson2e)
4988                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4989                     ;;
4990                     loongson2f)
4991                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4992                     ;;
4993                 esac
4994             ;;
4995             *)
4996                 # Unknown CPU. Disable everything.
4997                 warn "unknown CPU. Disabling all MIPS optimizations."
4998                 disable mipsfpu
4999                 disable mipsdsp
5000                 disable mipsdspr2
5001                 disable msa
5002                 disable mmi
5003             ;;
5004         esac
5005
5006         case $cpu in
5007             24kc)
5008                 disable mipsfpu
5009                 disable mipsdsp
5010                 disable mipsdspr2
5011             ;;
5012             24kf*)
5013                 disable mipsdsp
5014                 disable mipsdspr2
5015             ;;
5016             24kec|34kc|1004kc)
5017                 disable mipsfpu
5018                 disable mipsdspr2
5019             ;;
5020             24kef*|34kf*|1004kf*)
5021                 disable mipsdspr2
5022             ;;
5023             74kc)
5024                 disable mipsfpu
5025             ;;
5026             p5600)
5027                 enable mips32r5
5028                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5029             ;;
5030             i6400)
5031                 enable mips64r6
5032                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5033             ;;
5034             p6600)
5035                 enable mips64r6
5036                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5037             ;;
5038         esac
5039     else
5040         # We do not disable anything. Is up to the user to disable the unwanted features.
5041         warn 'generic cpu selected'
5042     fi
5043
5044 elif enabled ppc; then
5045
5046     disable ldbrx
5047
5048     case $(tolower $cpu) in
5049         601|ppc601|powerpc601)
5050             cpuflags="-mcpu=601"
5051             disable altivec
5052         ;;
5053         603*|ppc603*|powerpc603*)
5054             cpuflags="-mcpu=603"
5055             disable altivec
5056         ;;
5057         604*|ppc604*|powerpc604*)
5058             cpuflags="-mcpu=604"
5059             disable altivec
5060         ;;
5061         g3|75*|ppc75*|powerpc75*)
5062             cpuflags="-mcpu=750"
5063             disable altivec
5064         ;;
5065         g4|745*|ppc745*|powerpc745*)
5066             cpuflags="-mcpu=7450"
5067             disable vsx
5068         ;;
5069         74*|ppc74*|powerpc74*)
5070             cpuflags="-mcpu=7400"
5071             disable vsx
5072         ;;
5073         g5|970|ppc970|powerpc970)
5074             cpuflags="-mcpu=970"
5075             disable vsx
5076         ;;
5077         power[3-6]*)
5078             cpuflags="-mcpu=$cpu"
5079             disable vsx
5080         ;;
5081         power[7-8]*)
5082             cpuflags="-mcpu=$cpu"
5083         ;;
5084         cell)
5085             cpuflags="-mcpu=cell"
5086             enable ldbrx
5087             disable vsx
5088         ;;
5089         e500mc)
5090             cpuflags="-mcpu=e500mc"
5091             disable altivec
5092         ;;
5093         e500v2)
5094             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5095             disable altivec
5096             disable dcbzl
5097         ;;
5098         e500)
5099             cpuflags="-mcpu=8540 -mhard-float"
5100             disable altivec
5101             disable dcbzl
5102         ;;
5103     esac
5104
5105 elif enabled sparc; then
5106
5107     case $cpu in
5108         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5109             cpuflags="-mcpu=$cpu"
5110         ;;
5111         ultrasparc*|niagara[234])
5112             cpuflags="-mcpu=$cpu"
5113         ;;
5114     esac
5115
5116 elif enabled x86; then
5117
5118     case $cpu in
5119         i[345]86|pentium)
5120             cpuflags="-march=$cpu"
5121             disable i686
5122             disable mmx
5123         ;;
5124         # targets that do NOT support nopl and conditional mov (cmov)
5125         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5126             cpuflags="-march=$cpu"
5127             disable i686
5128         ;;
5129         # targets that do support nopl and conditional mov (cmov)
5130         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5131         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5132         |amdfam10|barcelona|b[dt]ver*|znver*)
5133             cpuflags="-march=$cpu"
5134             enable i686
5135             enable fast_cmov
5136         ;;
5137         # targets that do support conditional mov but on which it's slow
5138         pentium4|pentium4m|prescott|nocona)
5139             cpuflags="-march=$cpu"
5140             enable i686
5141             disable fast_cmov
5142         ;;
5143     esac
5144
5145 fi
5146
5147 if [ "$cpu" != generic ]; then
5148     add_cflags  $cpuflags
5149     add_asflags $cpuflags
5150     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5151 fi
5152
5153 # compiler sanity check
5154 test_exec <<EOF
5155 int main(void){ return 0; }
5156 EOF
5157 if test "$?" != 0; then
5158     echo "$cc is unable to create an executable file."
5159     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5160         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5161         echo "Only do this if you know what cross compiling means."
5162     fi
5163     die "C compiler test failed."
5164 fi
5165
5166 add_cppflags -D_ISOC99_SOURCE
5167 add_cxxflags -D__STDC_CONSTANT_MACROS
5168 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5169
5170 # some compilers silently accept -std=c11, so we also need to check that the
5171 # version macro is defined properly
5172 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5173     add_cflags -std=c11 ||
5174     check_cflags -std=c99
5175
5176 check_cppflags -D_FILE_OFFSET_BITS=64
5177 check_cppflags -D_LARGEFILE_SOURCE
5178
5179 add_host_cppflags -D_ISOC99_SOURCE
5180 check_host_cflags -std=c99
5181 check_host_cflags -Wall
5182 check_host_cflags $host_cflags_speed
5183
5184 check_64bit(){
5185     arch32=$1
5186     arch64=$2
5187     expr=${3:-'sizeof(void *) > 4'}
5188     test_code cc "" "int test[2*($expr) - 1]" &&
5189         subarch=$arch64 || subarch=$arch32
5190     enable $subarch
5191 }
5192
5193 case "$arch" in
5194     aarch64|alpha|ia64)
5195         enabled shared && enable_weak pic
5196     ;;
5197     mips)
5198         check_64bit mips mips64 '_MIPS_SIM > 1'
5199         enabled shared && enable_weak pic
5200     ;;
5201     parisc)
5202         check_64bit parisc parisc64
5203         enabled shared && enable_weak pic
5204     ;;
5205     ppc)
5206         check_64bit ppc ppc64
5207         enabled shared && enable_weak pic
5208     ;;
5209     s390)
5210         check_64bit s390 s390x
5211         enabled shared && enable_weak pic
5212     ;;
5213     sparc)
5214         check_64bit sparc sparc64
5215         enabled shared && enable_weak pic
5216     ;;
5217     x86)
5218         check_64bit x86_32 x86_64
5219         # Treat x32 as x64 for now. Note it also needs pic if shared
5220         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5221             subarch=x86_64 && enable x86_64 && disable x86_32
5222         if enabled x86_64; then
5223             enabled shared && enable_weak pic
5224             objformat=elf64
5225         fi
5226     ;;
5227 esac
5228
5229 # OS specific
5230 case $target_os in
5231     aix)
5232         SHFLAGS=-shared
5233         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5234         enabled shared && add_ldflags -Wl,-brtl
5235         arflags='-Xany -r -c'
5236         striptype=""
5237         ;;
5238     android)
5239         disable symver
5240         enable section_data_rel_ro
5241         add_cflags -fPIE
5242         add_ldexeflags -fPIE -pie
5243         SLIB_INSTALL_NAME='$(SLIBNAME)'
5244         SLIB_INSTALL_LINKS=
5245         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5246         ;;
5247     haiku)
5248         prefix_default="/boot/common"
5249         network_extralibs="-lnetwork"
5250         host_extralibs=
5251         ;;
5252     sunos)
5253         SHFLAGS='-shared -Wl,-h,$$(@F)'
5254         enabled x86 && append SHFLAGS -mimpure-text
5255         network_extralibs="-lsocket -lnsl"
5256         add_cppflags -D__EXTENSIONS__
5257         # When using suncc to build, the Solaris linker will mark
5258         # an executable with each instruction set encountered by
5259         # the Solaris assembler.  As our libraries contain their own
5260         # guards for processor-specific code, instead suppress
5261         # generation of the HWCAPS ELF section on Solaris x86 only.
5262         enabled_all suncc x86 &&
5263             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5264             add_ldflags -Wl,-M,mapfile
5265         nm_default='nm -P -g'
5266         striptype=""
5267         version_script='-M'
5268         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5269         ;;
5270     netbsd)
5271         disable symver
5272         oss_indev_extralibs="-lossaudio"
5273         oss_outdev_extralibs="-lossaudio"
5274         enabled gcc || check_ldflags -Wl,-zmuldefs
5275         ;;
5276     openbsd|bitrig)
5277         disable symver
5278         striptype=""
5279         SHFLAGS='-shared'
5280         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5281         SLIB_INSTALL_LINKS=
5282         oss_indev_extralibs="-lossaudio"
5283         oss_outdev_extralibs="-lossaudio"
5284         ;;
5285     dragonfly)
5286         disable symver
5287         ;;
5288     freebsd)
5289         ;;
5290     bsd/os)
5291         add_extralibs -lpoll -lgnugetopt
5292         strip="strip -d"
5293         ;;
5294     darwin)
5295         enabled ppc && add_asflags -force_cpusubtype_ALL
5296         install_name_dir_default='$(SHLIBDIR)'
5297         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5298         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5299         strip="${strip} -x"
5300         add_ldflags -Wl,-dynamic,-search_paths_first
5301         check_cflags -Werror=partial-availability
5302         SLIBSUF=".dylib"
5303         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5304         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5305         enabled x86_64 && objformat="macho64" || objformat="macho32"
5306         enabled_any pic shared x86_64 ||
5307             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5308         check_headers dispatch/dispatch.h &&
5309             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5310         if test -n "$sysroot"; then
5311             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5312             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5313         fi
5314         version_script='-exported_symbols_list'
5315         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5316         ;;
5317     msys*)
5318         die "Native MSYS builds are discouraged, please use the MINGW environment."
5319         ;;
5320     mingw32*|mingw64*)
5321         target_os=mingw32
5322         LIBTARGET=i386
5323         if enabled x86_64; then
5324             LIBTARGET="i386:x86-64"
5325         elif enabled arm; then
5326             LIBTARGET="arm"
5327         elif enabled aarch64; then
5328             LIBTARGET="arm64"
5329         fi
5330         if enabled shared; then
5331             # Cannot build both shared and static libs when using dllimport.
5332             disable static
5333         fi
5334         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5335         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5336         shlibdir_default="$bindir_default"
5337         SLIBPREF=""
5338         SLIBSUF=".dll"
5339         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5340         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5341         if test_cmd lib.exe -list; then
5342             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5343             if enabled x86_64; then
5344                 LIBTARGET=x64
5345             fi
5346         else
5347             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5348         fi
5349         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5350         SLIB_INSTALL_LINKS=
5351         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5352         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5353         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5354         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5355         enabled x86_64 && objformat="win64" || objformat="win32"
5356         dlltool="${cross_prefix}dlltool"
5357         ranlib=:
5358         enable dos_paths
5359         check_ldflags -Wl,--nxcompat,--dynamicbase
5360         # Lets work around some stupidity in binutils.
5361         # ld will strip relocations from executables even though we need them
5362         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5363         # however ld then forgets what the entry point should be (oops) so we
5364         # have to manually (re)set it.
5365         if enabled x86_32; then
5366             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5367         elif enabled x86_64; then
5368             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5369             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5370             # Set image base >4GB for extra entropy with HEASLR
5371             add_ldexeflags -Wl,--image-base,0x140000000
5372             append SHFLAGS -Wl,--image-base,0x180000000
5373         fi
5374         ;;
5375     win32|win64)
5376         disable symver
5377         if enabled shared; then
5378             # Link to the import library instead of the normal static library
5379             # for shared libs.
5380             LD_LIB='%.lib'
5381             # Cannot build both shared and static libs with MSVC or icl.
5382             disable static
5383         fi
5384         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5385         shlibdir_default="$bindir_default"
5386         SLIBPREF=""
5387         SLIBSUF=".dll"
5388         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5389         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5390         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5391         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5392         SLIB_INSTALL_LINKS=
5393         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5394         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5395         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5396         enabled x86_64 && objformat="win64" || objformat="win32"
5397         ranlib=:
5398         enable dos_paths
5399         ;;
5400     cygwin*)
5401         target_os=cygwin
5402         shlibdir_default="$bindir_default"
5403         SLIBPREF="cyg"
5404         SLIBSUF=".dll"
5405         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5406         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5407         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5408         SLIB_INSTALL_LINKS=
5409         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5410         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5411         enabled x86_64 && objformat="win64" || objformat="win32"
5412         enable dos_paths
5413         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5414         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5415         ;;
5416     *-dos|freedos|opendos)
5417         network_extralibs="-lsocket"
5418         objformat="coff"
5419         enable dos_paths
5420         ;;
5421     linux)
5422         enable section_data_rel_ro
5423         enabled_any arm aarch64 && enable_weak linux_perf
5424         ;;
5425     irix*)
5426         target_os=irix
5427         ranlib="echo ignoring ranlib"
5428         ;;
5429     os/2*)
5430         strip="lxlite -CS"
5431         striptype=""
5432         objformat="aout"
5433         add_cppflags -D_GNU_SOURCE
5434         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5435         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5436         LIBSUF="_s.a"
5437         SLIBPREF=""
5438         SLIBSUF=".dll"
5439         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5440         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5441         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5442             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5443             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5444             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5445             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5446         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5447             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5448         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5449         SLIB_INSTALL_LINKS=
5450         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5451         enable dos_paths
5452         enable_weak os2threads
5453         ;;
5454     gnu/kfreebsd)
5455         add_cppflags -D_BSD_SOURCE
5456         ;;
5457     gnu)
5458         ;;
5459     qnx)
5460         add_cppflags -D_QNX_SOURCE
5461         network_extralibs="-lsocket"
5462         ;;
5463     symbian)
5464         SLIBSUF=".dll"
5465         enable dos_paths
5466         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5467         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5468         add_ldflags -Wl,--target1-abs,--no-undefined \
5469                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5470                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5471         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5472                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5473                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5474         ;;
5475     minix)
5476         ;;
5477     none)
5478         ;;
5479     *)
5480         die "Unknown OS '$target_os'."
5481         ;;
5482 esac
5483
5484 # test if creating links works
5485 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5486 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5487 mkdir "$link_dest"
5488 $ln_s "$link_dest" "$link_name"
5489 touch "$link_dest/test_file"
5490 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5491     # create link to source path
5492     [ -e src ] && rm src
5493     $ln_s "$source_path" src
5494     source_link=src
5495 else
5496     # creating directory links doesn't work
5497     # fall back to using the full source path
5498     source_link="$source_path"
5499 fi
5500 # cleanup
5501 rm -r "$link_dest"
5502 rm -r "$link_name"
5503
5504 # determine libc flavour
5505
5506 probe_libc(){
5507     pfx=$1
5508     pfx_no_=${pfx%_}
5509     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5510     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5511         eval ${pfx}libc_type=uclibc
5512         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5513     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5514         eval ${pfx}libc_type=glibc
5515         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5516     # MinGW headers can be installed on Cygwin, so check for newlib first.
5517     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5518         eval ${pfx}libc_type=newlib
5519         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5520     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5521     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5522         eval ${pfx}libc_type=mingw64
5523         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5524             add_compat msvcrt/snprintf.o
5525             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5526         fi
5527         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5528         eval test \$${pfx_no_}cc_type = "gcc" &&
5529             add_${pfx}cppflags -D__printf__=__gnu_printf__
5530         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5531             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5532         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5533     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5534          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5535         eval ${pfx}libc_type=mingw32
5536         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5537             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5538             die "ERROR: MinGW32 runtime version must be >= 3.15."
5539         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5540         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5541             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5542         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5543             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5544         eval test \$${pfx_no_}cc_type = "gcc" &&
5545             add_${pfx}cppflags -D__printf__=__gnu_printf__
5546         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5547     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5548         eval ${pfx}libc_type=msvcrt
5549         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5550             if [ "$pfx" = host_ ]; then
5551                 add_host_cppflags -Dsnprintf=_snprintf
5552             else
5553                 add_compat strtod.o strtod=avpriv_strtod
5554                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5555                                              _snprintf=avpriv_snprintf  \
5556                                              vsnprintf=avpriv_vsnprintf
5557             fi
5558         fi
5559         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5560         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5561         # 0x601 by default unless something else is set by the user.
5562         # This can easily lead to us detecting functions only present
5563         # in such new versions and producing binaries requiring windows 7.0.
5564         # Therefore explicitly set the default to Vista unless the user has
5565         # set something else on the command line.
5566         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5567         # family. For these cases, configure is free to use any functions
5568         # found in the SDK headers by default. (Alternatively, we could force
5569         # _WIN32_WINNT to 0x0602 in that case.)
5570         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5571             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5572 #ifdef WINAPI_FAMILY
5573 #include <winapifamily.h>
5574 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5575 #error not desktop
5576 #endif
5577 #endif
5578 EOF
5579         if [ "$pfx" = "" ]; then
5580             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5581             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5582         fi
5583     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5584         eval ${pfx}libc_type=klibc
5585     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5586         eval ${pfx}libc_type=bionic
5587     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5588         eval ${pfx}libc_type=solaris
5589         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5590     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5591         eval ${pfx}libc_type=djgpp
5592         add_cppflags -U__STRICT_ANSI__
5593         add_cflags "-include $source_path/compat/djgpp/math.h"
5594         add_compat djgpp/math.o
5595     fi
5596     test_${pfx}cc <<EOF
5597 #include <time.h>
5598 void *v = localtime_r;
5599 EOF
5600 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5601 #include <time.h>
5602 void *v = localtime_r;
5603 EOF
5604
5605     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5606 }
5607
5608 probe_libc
5609 probe_libc host_
5610
5611 # hacks for compiler/libc/os combinations
5612
5613 case $libc_type in
5614     bionic)
5615         add_compat strtod.o strtod=avpriv_strtod
5616         ;;
5617 esac
5618
5619 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5620     add_cppflags '-I\$(SRC_PATH)/compat/float'
5621
5622 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5623
5624 set_default libdir
5625 : ${shlibdir_default:="$libdir"}
5626 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5627
5628 set_default $PATHS_LIST
5629 set_default nm
5630
5631 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5632
5633 enable_weak_pic() {
5634     disabled pic && return
5635     enable pic
5636     add_cppflags -DPIC
5637     case "$target_os" in
5638     mingw*|cygwin*|win*)
5639         ;;
5640     *)
5641         add_cflags -fPIC
5642         add_asflags -fPIC
5643         ;;
5644     esac
5645 }
5646
5647 enabled pic && enable_weak_pic
5648
5649 test_cc <<EOF || die "Symbol mangling check failed."
5650 int ff_extern;
5651 EOF
5652 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5653 extern_prefix=${sym%%ff_extern*}
5654
5655 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5656
5657 for restrict_keyword in restrict __restrict__ __restrict ""; do
5658     test_code cc "" "char * $restrict_keyword p" && break
5659 done
5660
5661 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5662
5663 # The global variable ensures the bits appear unchanged in the object file.
5664 test_cc <<EOF || die "endian test failed"
5665 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5666 EOF
5667 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5668
5669 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5670
5671 if ! enabled ppc64 || enabled bigendian; then
5672     disable vsx
5673 fi
5674
5675 check_gas() {
5676     log "check_gas using '$as' as AS"
5677     # :vararg is used on aarch64, arm and ppc altivec
5678     check_as vararg "
5679 .macro m n, y:vararg=0
5680 \n: .int \y
5681 .endm
5682 m x" || return 1
5683     # .altmacro is only used in arm asm
5684     ! enabled arm || check_as gnu_as ".altmacro"
5685 }
5686
5687 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5688     nogas=:
5689     enabled_any arm aarch64 && nogas=die
5690     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5691     as_noop=-v
5692
5693     case $as_type in
5694         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5695         gcc)  gaspp_as_type=gas ;;
5696         *)    gaspp_as_type=$as_type ;;
5697     esac
5698
5699     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5700
5701     test "${as#*gas-preprocessor.pl}" != "$as" ||
5702     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5703         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5704
5705     if ! check_gas ; then
5706         as=${gas:=$as}
5707         check_gas || \
5708             $nogas "GNU assembler not found, install/update gas-preprocessor"
5709     fi
5710
5711     check_as as_func ".func test
5712                       .endfunc"
5713 fi
5714
5715 check_inline_asm inline_asm_labels '"1:\n"'
5716
5717 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5718
5719 if enabled aarch64; then
5720     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5721     # internal assembler in clang 3.3 does not support this instruction
5722     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5723     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5724
5725     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5726
5727 elif enabled alpha; then
5728
5729     check_cflags -mieee
5730
5731 elif enabled arm; then
5732
5733     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5734     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5735 float func(float a, float b){ return a+b; }
5736 EOF
5737     enabled thumb && check_cflags -mthumb || check_cflags -marm
5738
5739     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5740         :
5741     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5742         :
5743     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5744         case "${cross_prefix:-$cc}" in
5745             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5746             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5747 __asm__ (".eabi_attribute 28, 1");
5748 int main(void) { return 0; }
5749 EOF
5750         esac
5751         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5752     fi
5753
5754     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5755     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5756     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5757     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5758     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5759     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5760     enabled setend  && check_insn setend  'setend be'
5761
5762     [ $target_os = linux ] || [ $target_os = android ] ||
5763         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5764             $ARCH_EXT_LIST_ARM
5765
5766     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5767
5768     check_as as_arch_directive ".arch armv7-a"
5769     check_as as_dn_directive   "ra .dn d0.i16"
5770     check_as as_fpu_directive  ".fpu neon"
5771
5772     # llvm's integrated assembler supports .object_arch from llvm 3.5
5773     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5774         check_as as_object_arch ".object_arch armv4"
5775
5776     # MS armasm fails to assemble our PIC constructs
5777     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5778
5779 elif enabled mips; then
5780
5781     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5782     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5783     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5784
5785     # Enable minimum ISA based on selected options
5786     if enabled mips64; then
5787         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5788         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5789         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5790     else
5791         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5792         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5793         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5794         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5795     fi
5796
5797     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5798     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5799     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5800     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5801     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5802     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5803
5804     if enabled bigendian && enabled msa; then
5805         disable msa
5806     fi
5807
5808 elif enabled parisc; then
5809
5810     if enabled gcc; then
5811         case $($cc -dumpversion) in
5812             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5813         esac
5814     fi
5815
5816 elif enabled ppc; then
5817
5818     enable local_aligned
5819
5820     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5821     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5822     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5823     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5824
5825     if enabled altivec; then
5826         check_cflags -maltivec -mabi=altivec
5827
5828         # check if our compiler supports Motorola AltiVec C API
5829         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5830                                     vector signed int v2 = (vector signed int) { 1 };
5831                                     v1 = vec_add(v1, v2);"
5832
5833         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5834     fi
5835
5836     if enabled vsx; then
5837         check_cflags -mvsx &&
5838         check_cc vsx altivec.h "int v[4] = { 0 };
5839                                 vector signed int v1 = vec_vsx_ld(0, v);"
5840     fi
5841
5842     if enabled power8; then
5843         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5844     fi
5845
5846 elif enabled x86; then
5847
5848     check_builtin rdtsc    intrin.h   "__rdtsc()"
5849     check_builtin mm_empty mmintrin.h "_mm_empty()"
5850
5851     enable local_aligned
5852
5853     # check whether EBP is available on x86
5854     # As 'i' is stored on the stack, this program will crash
5855     # if the base pointer is used to access it because the
5856     # base pointer is cleared in the inline assembly code.
5857     check_exec_crash <<EOF && enable ebp_available
5858 volatile int i=0;
5859 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5860 return i;
5861 EOF
5862
5863     # check whether EBX is available on x86
5864     check_inline_asm ebx_available '""::"b"(0)' &&
5865         check_inline_asm ebx_available '"":::"%ebx"'
5866
5867     # check whether xmm clobbers are supported
5868     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5869
5870     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5871         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5872
5873     # check whether binutils is new enough to compile SSSE3/MMXEXT
5874     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5875     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5876
5877     probe_x86asm(){
5878         x86asmexe_probe=$1
5879         if test_cmd $x86asmexe_probe -v; then
5880             x86asmexe=$x86asmexe_probe
5881             x86asm_type=nasm
5882             x86asm_debug="-g -F dwarf"
5883             X86ASMDEP=
5884             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5885         elif test_cmd $x86asmexe_probe --version; then
5886             x86asmexe=$x86asmexe_probe
5887             x86asm_type=yasm
5888             x86asm_debug="-g dwarf2"
5889             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5890             X86ASM_DEPFLAGS=
5891         fi
5892         check_x86asm x86asm "movbe ecx, [5]"
5893     }
5894
5895     if ! disabled_any asm mmx x86asm; then
5896         disable x86asm
5897         for program in $x86asmexe nasm yasm; do
5898             probe_x86asm $program && break
5899         done
5900         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5901         X86ASMFLAGS="-f $objformat"
5902         enabled pic               && append X86ASMFLAGS "-DPIC"
5903         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5904         case "$objformat" in
5905             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5906         esac
5907
5908         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5909         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5910         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5911         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5912         check_x86asm cpunop          "CPU amdnop"
5913     fi
5914
5915     case "$cpu" in
5916         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5917             disable fast_clz
5918         ;;
5919     esac
5920
5921 fi
5922
5923 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5924
5925 check_ldflags -Wl,--as-needed
5926 check_ldflags -Wl,-z,noexecstack
5927
5928 if ! disabled network; then
5929     check_func getaddrinfo $network_extralibs
5930     check_func inet_aton $network_extralibs
5931
5932     check_type netdb.h "struct addrinfo"
5933     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5934     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5935     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5936     check_type poll.h "struct pollfd"
5937     check_type netinet/sctp.h "struct sctp_event_subscribe"
5938     check_struct "sys/socket.h" "struct msghdr" msg_flags
5939     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5940     check_type netinet/in.h "struct sockaddr_in6"
5941     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5942     check_type "sys/types.h sys/socket.h" socklen_t
5943
5944     # Prefer arpa/inet.h over winsock2
5945     if check_headers arpa/inet.h ; then
5946         check_func closesocket
5947     elif check_headers winsock2.h ; then
5948         check_func_headers winsock2.h closesocket -lws2 &&
5949             network_extralibs="-lws2" ||
5950         { check_func_headers winsock2.h closesocket -lws2_32 &&
5951             network_extralibs="-lws2_32"; } || disable winsock2_h network
5952         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5953
5954         check_type ws2tcpip.h socklen_t
5955         check_type ws2tcpip.h "struct addrinfo"
5956         check_type ws2tcpip.h "struct group_source_req"
5957         check_type ws2tcpip.h "struct ip_mreq_source"
5958         check_type ws2tcpip.h "struct ipv6_mreq"
5959         check_type winsock2.h "struct pollfd"
5960         check_struct winsock2.h "struct sockaddr" sa_len
5961         check_type ws2tcpip.h "struct sockaddr_in6"
5962         check_type ws2tcpip.h "struct sockaddr_storage"
5963     else
5964         disable network
5965     fi
5966 fi
5967
5968 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5969 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5970 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5971 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5972 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5973 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5974 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5975
5976 case "$custom_allocator" in
5977     jemalloc)
5978         # jemalloc by default does not use a prefix
5979         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5980     ;;
5981     tcmalloc)
5982         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5983         malloc_prefix=tc_
5984     ;;
5985 esac
5986
5987 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5988 check_func  ${malloc_prefix}memalign            && enable memalign
5989 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5990
5991 check_func  access
5992 check_func_headers stdlib.h arc4random
5993 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5994 check_func  fcntl
5995 check_func  fork
5996 check_func  gethrtime
5997 check_func  getopt
5998 check_func  getrusage
5999 check_func  gettimeofday
6000 check_func  isatty
6001 check_func  mkstemp
6002 check_func  mmap
6003 check_func  mprotect
6004 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6005 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6006 check_func  sched_getaffinity
6007 check_func  setrlimit
6008 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6009 check_func  strerror_r
6010 check_func  sysconf
6011 check_func  sysctl
6012 check_func  usleep
6013
6014 check_func_headers conio.h kbhit
6015 check_func_headers io.h setmode
6016 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6017 check_func_headers mach/mach_time.h mach_absolute_time
6018 check_func_headers stdlib.h getenv
6019 check_func_headers sys/stat.h lstat
6020
6021 check_func_headers windows.h GetProcessAffinityMask
6022 check_func_headers windows.h GetProcessTimes
6023 check_func_headers windows.h GetSystemTimeAsFileTime
6024 check_func_headers windows.h LoadLibrary
6025 check_func_headers windows.h MapViewOfFile
6026 check_func_headers windows.h PeekNamedPipe
6027 check_func_headers windows.h SetConsoleTextAttribute
6028 check_func_headers windows.h SetConsoleCtrlHandler
6029 check_func_headers windows.h Sleep
6030 check_func_headers windows.h VirtualAlloc
6031 check_func_headers glob.h glob
6032 enabled xlib &&
6033     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6034
6035 check_headers direct.h
6036 check_headers dirent.h
6037 check_headers dxgidebug.h
6038 check_headers dxva.h
6039 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6040 check_headers io.h
6041 check_headers linux/perf_event.h
6042 check_headers libcrystalhd/libcrystalhd_if.h
6043 check_headers malloc.h
6044 check_headers net/udplite.h
6045 check_headers poll.h
6046 check_headers sys/param.h
6047 check_headers sys/resource.h
6048 check_headers sys/select.h
6049 check_headers sys/time.h
6050 check_headers sys/un.h
6051 check_headers termios.h
6052 check_headers unistd.h
6053 check_headers valgrind/valgrind.h
6054 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6055 check_headers windows.h
6056 check_headers X11/extensions/XvMClib.h
6057 check_headers asm/types.h
6058
6059 # it seems there are versions of clang in some distros that try to use the
6060 # gcc headers, which explodes for stdatomic
6061 # so we also check that atomics actually work here
6062 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6063
6064 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6065 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6066     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6067 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6068 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6069 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6070
6071 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6072 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6073 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6074
6075 enabled appkit       && check_apple_framework AppKit
6076 enabled audiotoolbox && check_apple_framework AudioToolbox
6077 enabled avfoundation && check_apple_framework AVFoundation
6078 enabled coreimage    && check_apple_framework CoreImage
6079 enabled videotoolbox && check_apple_framework VideoToolbox
6080
6081 check_apple_framework CoreFoundation
6082 check_apple_framework CoreMedia
6083 check_apple_framework CoreVideo
6084
6085 enabled avfoundation && {
6086     disable coregraphics applicationservices
6087     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6088     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6089
6090 enabled videotoolbox && {
6091     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6092     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6093     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6094     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6095     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6096     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6097 }
6098
6099 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6100
6101 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6102 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6103 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6104 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6105 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6106
6107 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6108 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6109
6110 if [ -z "$nvccflags" ]; then
6111     nvccflags=$nvccflags_default
6112 fi
6113
6114 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6115     nvccflags="$nvccflags -m64"
6116 else
6117     nvccflags="$nvccflags -m32"
6118 fi
6119
6120 if enabled cuda_nvcc; then
6121     nvccflags="$nvccflags -ptx"
6122 else
6123     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6124     check_nvcc cuda_llvm
6125 fi
6126
6127 if ! disabled ffnvcodec; then
6128     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6129     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6130       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6131       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6132       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6133 fi
6134
6135 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6136
6137 if ! disabled w32threads && ! enabled pthreads; then
6138     check_func_headers "windows.h process.h" _beginthreadex &&
6139         check_type "windows.h" CONDITION_VARIABLE &&
6140         check_type "windows.h" INIT_ONCE &&
6141         enable w32threads || disable w32threads
6142     if ! enabled w32threads && enabled winrt; then
6143         check_func_headers "windows.h" CreateThread &&
6144             enable w32threads || disable w32threads
6145     fi
6146 fi
6147
6148 # check for some common methods of building with pthread support
6149 # do this before the optional library checks as some of them require pthreads
6150 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6151     if check_lib pthreads pthread.h pthread_join   -pthread &&
6152        check_lib pthreads pthread.h pthread_create -pthread; then
6153         add_cflags -pthread
6154     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6155          check_lib pthreads pthread.h pthread_create -pthreads; then
6156         add_cflags -pthreads
6157     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6158          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6159         add_cflags -ldl -pthread
6160     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6161          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6162         :
6163     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6164          check_lib pthreads pthread.h pthread_create -lpthread; then
6165         :
6166     elif check_func pthread_join && check_func pthread_create; then
6167         enable pthreads
6168     fi
6169     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6170
6171     if enabled pthreads; then
6172         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6173         check_func pthread_cancel $pthreads_extralibs
6174     fi
6175 fi
6176
6177 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6178                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6179 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6180 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6181
6182 # On some systems dynamic loading requires no extra linker flags
6183 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6184
6185 check_lib libm math.h sin -lm
6186
6187 atan2f_args=2
6188 copysign_args=2
6189 hypot_args=2
6190 ldexpf_args=2
6191 powf_args=2
6192
6193 for func in $MATH_FUNCS; do
6194     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6195 done
6196
6197 for func in $COMPLEX_FUNCS; do
6198     eval check_complexfunc $func \${${func}_args:-1}
6199 done
6200
6201 # these are off by default, so fail if requested and not available
6202 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6203 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6204 enabled decklink          && { require_headers DeckLinkAPI.h &&
6205                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6206 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6207 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6208 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6209 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6210 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6211 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6212 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6213                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6214                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6215 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6216 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6217 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6218 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6219 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6220 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6221                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6222                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6223 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6224 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6225 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6226 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6227 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6228 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6229 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6230                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6231                                  warn "using libfdk without pkg-config"; } }
6232 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
6233 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6234 enabled fontconfig        && enable libfontconfig
6235 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6236 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6237 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6238 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6239                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6240 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6241                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6242                                done || die "ERROR: libgsm not found"; }
6243 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6244 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6245 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6246 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6247 # While it may appear that require is being used as a pkg-config
6248 # fallback for libmfx, it is actually being used to detect a different
6249 # installation route altogether.  If libmfx is installed via the Intel
6250 # Media SDK or Intel Media Server Studio, these don't come with
6251 # pkg-config support.  Instead, users should make sure that the build
6252 # can find the libraries and headers through other means.
6253 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6254                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6255 if enabled libmfx; then
6256    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6257 fi
6258
6259 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6260 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6261 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6262                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6263 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6264                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6265                                die "ERROR: libnpp not found"; }
6266 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6267 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6268 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6269                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6270                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6271                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6272 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6273 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6274                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6275 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6276 enabled libopus           && {
6277     enabled libopus_decoder && {
6278         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6279     }
6280     enabled libopus_encoder && {
6281         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6282     }
6283 }
6284 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6285 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6286 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6287 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6288 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6289 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6290                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6291 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6292 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6293 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6294 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6295 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6296 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6297 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6298 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6299 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6300 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6301                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6302                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6303 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6304 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6305 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6306 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6307 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6308                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6309
6310 enabled libvpx            && {
6311     enabled libvpx_vp8_decoder && {
6312         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6313             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6314     }
6315     enabled libvpx_vp8_encoder && {
6316         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6317             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6318     }
6319     enabled libvpx_vp9_decoder && {
6320         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6321             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6322     }
6323     enabled libvpx_vp9_encoder && {
6324         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6325             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6326     }
6327     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6328         die "libvpx enabled but no supported decoders found"
6329     fi
6330 }
6331
6332 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6333 enabled libwebp           && {
6334     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6335     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6336 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6337                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6338                                  warn "using libx264 without pkg-config"; } } &&
6339                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6340                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6341 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6342                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6343 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6344 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6345 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6346 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6347 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6348 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6349                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6350                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6351 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6352 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6353                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6354                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6355                                die "ERROR: mbedTLS not found"; }
6356 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6357 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6358                                { ! enabled cross_compile &&
6359                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6360                                  add_ldflags -L/opt/vc/lib/ &&
6361                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6362                                die "ERROR: mmal not found" &&
6363                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6364 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6365                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6366                                die "ERROR: openal not found"; } &&
6367                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6368                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6369 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6370                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6371                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6372                                die "ERROR: opencl not found"; } &&
6373                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6374                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6375                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6376 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6377                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6378                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6379                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6380                                die "ERROR: opengl not found."
6381                              }
6382 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6383                                { ! enabled cross_compile &&
6384                                  add_cflags -isystem/opt/vc/include/IL &&
6385                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6386                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6387                              enable omx
6388 enabled omx               && require_headers OMX_Core.h
6389 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6390                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6391                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6392                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6393                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6394                                die "ERROR: openssl not found"; }
6395 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6396 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6397                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6398                                { enabled libdrm ||
6399                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6400                              }
6401 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6402
6403
6404 if enabled gcrypt; then
6405     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6406     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6407         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6408         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6409         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6410             die "ERROR: gcrypt not found"
6411         add_cflags $gcrypt_cflags
6412     else
6413         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6414     fi
6415 fi
6416
6417 if enabled sdl2; then
6418     SDL2_CONFIG="${cross_prefix}sdl2-config"
6419     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6420     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6421         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6422         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6423         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6424         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6425         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6426             enable sdl2
6427     fi
6428     if test $target_os = "mingw32"; then
6429         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6430     fi
6431 fi
6432
6433 if enabled decklink; then
6434     case $target_os in
6435         mingw32*|mingw64*|win32|win64)
6436             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6437             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6438             ;;
6439     esac
6440 fi
6441
6442 enabled securetransport &&
6443     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6444     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6445         disable securetransport
6446
6447 enabled securetransport &&
6448     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6449
6450 enabled schannel &&
6451     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6452     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6453     schannel_extralibs="-lsecur32" ||
6454         disable schannel
6455
6456 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6457 enabled makeinfo \
6458     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6459     && enable makeinfo_html || disable makeinfo_html
6460 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6461 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6462 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6463 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6464
6465 # check V4L2 codecs available in the API
6466 if enabled v4l2_m2m; then
6467     check_headers linux/fb.h
6468     check_headers linux/videodev2.h
6469     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6470     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6471     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6472     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6473     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6474     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6475     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6476     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6477     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6478     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6479     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6480 fi
6481
6482 check_headers sys/videoio.h
6483 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6484
6485 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6486 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6487 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6488 # w32api 3.12 had it defined wrong
6489 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6490
6491 check_type "dshow.h" IBaseFilter
6492
6493 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6494 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6495     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6496     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6497     check_headers "dev/ic/bt8xx.h"
6498
6499 if check_struct sys/soundcard.h audio_buf_info bytes; then
6500     enable_sanitized sys/soundcard.h
6501 else
6502     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6503     #include <sys/soundcard.h>
6504     audio_buf_info abc;
6505 EOF
6506 fi
6507
6508 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6509                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6510
6511 enabled libjack &&
6512     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6513
6514 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6515
6516 if enabled libcdio; then
6517     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6518     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6519     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6520     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6521     die "ERROR: No usable libcdio/cdparanoia found"
6522 fi
6523
6524 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6525     disable libxcb_shm libxcb_shape libxcb_xfixes
6526
6527 if enabled libxcb; then
6528     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6529     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6530     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6531 fi
6532
6533 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6534
6535 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6536 # the desktop api partition
6537 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6538 #ifdef WINAPI_FAMILY
6539 #include <winapifamily.h>
6540 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6541 #error desktop, not uwp
6542 #else
6543 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6544 #endif
6545 #else
6546 #error no family set
6547 #endif
6548 EOF
6549
6550 enabled vaapi &&
6551     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6552
6553 if enabled vaapi; then
6554     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6555
6556     if enabled xlib; then
6557         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6558     fi
6559
6560     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6561
6562     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6563     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6564     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6565     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6566     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6567     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6568     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6569 fi
6570
6571 if enabled_all opencl libdrm ; then
6572     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6573         enable opencl_drm_beignet
6574     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6575         enable opencl_drm_arm
6576 fi
6577
6578 if enabled_all opencl vaapi ; then
6579     if enabled opencl_drm_beignet ; then
6580         enable opencl_vaapi_beignet
6581     else
6582         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6583             enable opencl_vaapi_intel_media
6584     fi
6585 fi
6586
6587 if enabled_all opencl dxva2 ; then
6588     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6589         enable opencl_dxva2
6590 fi
6591
6592 if enabled_all opencl d3d11va ; then
6593     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6594         enable opencl_d3d11
6595 fi
6596
6597 enabled vdpau &&
6598     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6599
6600 enabled vdpau &&
6601     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6602
6603 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6604
6605 if enabled x86; then
6606     case $target_os in
6607         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6608             ;;
6609         *)
6610             disable ffnvcodec cuvid nvdec nvenc
6611             ;;
6612     esac
6613 elif enabled ppc64 && ! enabled bigendian; then
6614     case $target_os in
6615         linux)
6616             ;;
6617         *)
6618             disable ffnvcodec cuvid nvdec nvenc
6619             ;;
6620     esac
6621 else
6622     disable ffnvcodec cuvid nvdec nvenc
6623 fi
6624
6625 enabled ffnvcodec && enable cuda
6626
6627 enabled nvenc &&
6628     test_cc -I$source_path <<EOF || disable nvenc
6629 #include <ffnvcodec/nvEncodeAPI.h>
6630 NV_ENCODE_API_FUNCTION_LIST flist;
6631 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6632 int main(void) { return 0; }
6633 EOF
6634
6635 enabled amf &&
6636     check_cpp_condition amf "AMF/core/Version.h" \
6637         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6638
6639 # Funny iconv installations are not unusual, so check it after all flags have been set
6640 if enabled libc_iconv; then
6641     check_func_headers iconv.h iconv
6642 elif enabled iconv; then
6643     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6644 fi
6645
6646 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6647
6648 # add some useful compiler flags if supported
6649 check_cflags -Wdeclaration-after-statement
6650 check_cflags -Wall
6651 check_cflags -Wdisabled-optimization
6652 check_cflags -Wpointer-arith
6653 check_cflags -Wredundant-decls
6654 check_cflags -Wwrite-strings
6655 check_cflags -Wtype-limits
6656 check_cflags -Wundef
6657 check_cflags -Wmissing-prototypes
6658 check_cflags -Wno-pointer-to-int-cast
6659 check_cflags -Wstrict-prototypes
6660 check_cflags -Wempty-body
6661
6662 if enabled extra_warnings; then
6663     check_cflags -Wcast-qual
6664     check_cflags -Wextra
6665     check_cflags -Wpedantic
6666 fi
6667
6668 check_disable_warning(){
6669     warning_flag=-W${1#-Wno-}
6670     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6671 }
6672
6673 test_cflags -Werror=unused-command-line-argument &&
6674     append unknown_warning_flags "-Werror=unused-command-line-argument"
6675 test_cflags -Werror=unknown-warning-option &&
6676     append unknown_warning_flags "-Werror=unknown-warning-option"
6677
6678 check_disable_warning -Wno-parentheses
6679 check_disable_warning -Wno-switch
6680 check_disable_warning -Wno-format-zero-length
6681 check_disable_warning -Wno-pointer-sign
6682 check_disable_warning -Wno-unused-const-variable
6683 check_disable_warning -Wno-bool-operation
6684 check_disable_warning -Wno-char-subscripts
6685
6686 check_disable_warning_headers(){
6687     warning_flag=-W${1#-Wno-}
6688     test_cflags $warning_flag && add_cflags_headers $1
6689 }
6690
6691 check_disable_warning_headers -Wno-deprecated-declarations
6692 check_disable_warning_headers -Wno-unused-variable
6693
6694 test_cc <<EOF && enable blocks_extension
6695 void (^block)(void);
6696 EOF
6697
6698 # add some linker flags
6699 check_ldflags -Wl,--warn-common
6700 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6701 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6702 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6703
6704 # add some strip flags
6705 check_stripflags -x
6706
6707 enabled neon_clobber_test &&
6708     check_ldflags -Wl,--wrap,avcodec_open2              \
6709                   -Wl,--wrap,avcodec_decode_audio4      \
6710                   -Wl,--wrap,avcodec_decode_video2      \
6711                   -Wl,--wrap,avcodec_decode_subtitle2   \
6712                   -Wl,--wrap,avcodec_encode_audio2      \
6713                   -Wl,--wrap,avcodec_encode_video2      \
6714                   -Wl,--wrap,avcodec_encode_subtitle    \
6715                   -Wl,--wrap,avcodec_send_packet        \
6716                   -Wl,--wrap,avcodec_receive_packet     \
6717                   -Wl,--wrap,avcodec_send_frame         \
6718                   -Wl,--wrap,avcodec_receive_frame      \
6719                   -Wl,--wrap,swr_convert                \
6720                   -Wl,--wrap,avresample_convert ||
6721     disable neon_clobber_test
6722
6723 enabled xmm_clobber_test &&
6724     check_ldflags -Wl,--wrap,avcodec_open2              \
6725                   -Wl,--wrap,avcodec_decode_audio4      \
6726                   -Wl,--wrap,avcodec_decode_video2      \
6727                   -Wl,--wrap,avcodec_decode_subtitle2   \
6728                   -Wl,--wrap,avcodec_encode_audio2      \
6729                   -Wl,--wrap,avcodec_encode_video2      \
6730                   -Wl,--wrap,avcodec_encode_subtitle    \
6731                   -Wl,--wrap,avcodec_send_packet        \
6732                   -Wl,--wrap,avcodec_receive_packet     \
6733                   -Wl,--wrap,avcodec_send_frame         \
6734                   -Wl,--wrap,avcodec_receive_frame      \
6735                   -Wl,--wrap,swr_convert                \
6736                   -Wl,--wrap,avresample_convert         \
6737                   -Wl,--wrap,sws_scale ||
6738     disable xmm_clobber_test
6739
6740 check_ld "cc" proper_dce <<EOF
6741 extern const int array[512];
6742 static inline int func(void) { return array[0]; }
6743 int main(void) { return 0; }
6744 EOF
6745
6746 if enabled proper_dce; then
6747     echo "X { local: *; };" > $TMPV
6748     if test_ldflags -Wl,${version_script},$TMPV; then
6749         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6750         quotes='""'
6751         test_cc <<EOF && enable symver_asm_label
6752 void ff_foo(void) __asm__ ("av_foo@VERSION");
6753 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6754 EOF
6755         test_cc <<EOF && enable symver_gnu_asm
6756 __asm__(".symver ff_foo,av_foo@VERSION");
6757 void ff_foo(void) {}
6758 EOF
6759     fi
6760 fi
6761
6762 if [ -z "$optflags" ]; then
6763     if enabled small; then
6764         optflags=$cflags_size
6765     elif enabled optimizations; then
6766         optflags=$cflags_speed
6767     else
6768         optflags=$cflags_noopt
6769     fi
6770 fi
6771
6772 check_optflags(){
6773     check_cflags "$@"
6774     enabled lto && check_ldflags "$@"
6775 }
6776
6777 check_optflags $optflags
6778 check_optflags -fno-math-errno
6779 check_optflags -fno-signed-zeros
6780
6781 if enabled lto; then
6782     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6783     check_cflags  -flto
6784     check_ldflags -flto $cpuflags
6785     disable inline_asm_direct_symbol_refs
6786 fi
6787
6788 enabled ftrapv && check_cflags -ftrapv
6789
6790 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6791 int x;
6792 EOF
6793
6794
6795 if enabled icc; then
6796     # Just warnings, no remarks
6797     check_cflags -w1
6798     # -wd: Disable following warnings
6799     # 144, 167, 556: -Wno-pointer-sign
6800     # 188: enumerated type mixed with another type
6801     # 1292: attribute "foo" ignored
6802     # 1419: external declaration in primary source file
6803     # 10006: ignoring unknown option -fno-signed-zeros
6804     # 10148: ignoring unknown option -Wno-parentheses
6805     # 10156: ignoring option '-W'; no argument required
6806     # 13200: No EMMS instruction before call to function
6807     # 13203: No EMMS instruction before return from function
6808     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6809     # 11030: Warning unknown option --as-needed
6810     # 10156: ignoring option '-export'; no argument required
6811     check_ldflags -wd10156,11030
6812     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6813     enable ebp_available
6814     # The test above does not test linking
6815     enabled lto && disable symver_asm_label
6816     if enabled x86_32; then
6817         icc_version=$($cc -dumpversion)
6818         test ${icc_version%%.*} -ge 11 &&
6819             check_cflags -falign-stack=maintain-16-byte ||
6820             disable aligned_stack
6821     fi
6822 elif enabled gcc; then
6823     check_optflags -fno-tree-vectorize
6824     check_cflags -Werror=format-security
6825     check_cflags -Werror=implicit-function-declaration
6826     check_cflags -Werror=missing-prototypes
6827     check_cflags -Werror=return-type
6828     check_cflags -Werror=vla
6829     check_cflags -Wformat
6830     check_cflags -fdiagnostics-color=auto
6831     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6832     if enabled x86_32; then
6833         case $target_os in
6834         *bsd*)
6835             # BSDs don't guarantee a 16 byte aligned stack, but we can
6836             # request GCC to try to maintain 16 byte alignment throughout
6837             # function calls. Library entry points that might call assembly
6838             # functions align the stack. (The parameter means 2^4 bytes.)
6839             check_cflags -mpreferred-stack-boundary=4
6840             ;;
6841         esac
6842     fi
6843 elif enabled llvm_gcc; then
6844     check_cflags -mllvm -stack-alignment=16
6845 elif enabled clang; then
6846     if enabled x86_32; then
6847         # Clang doesn't support maintaining alignment without assuming the
6848         # same alignment in every function. If 16 byte alignment would be
6849         # enabled, one would also have to either add attribute_align_arg on
6850         # every single entry point into the libraries or enable -mstackrealign
6851         # (doing stack realignment in every single function).
6852         case $target_os in
6853         mingw32|win32|*bsd*)
6854             disable aligned_stack
6855             ;;
6856         *)
6857             check_cflags -mllvm -stack-alignment=16
6858             check_cflags -mstack-alignment=16
6859             ;;
6860         esac
6861     else
6862         check_cflags -mllvm -stack-alignment=16
6863         check_cflags -mstack-alignment=16
6864     fi
6865     check_cflags -Qunused-arguments
6866     check_cflags -Werror=implicit-function-declaration
6867     check_cflags -Werror=missing-prototypes
6868     check_cflags -Werror=return-type
6869 elif enabled cparser; then
6870     add_cflags -Wno-missing-variable-declarations
6871     add_cflags -Wno-empty-statement
6872 elif enabled armcc; then
6873     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6874     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6875     # 2523: use of inline assembly is deprecated
6876     add_cflags -W${armcc_opt},--diag_suppress=2523
6877     add_cflags -W${armcc_opt},--diag_suppress=1207
6878     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6879     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6880     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6881     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6882 elif enabled pathscale; then
6883     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6884     disable inline_asm
6885 elif enabled_any msvc icl; then
6886     enabled x86_32 && disable aligned_stack
6887     enabled_all x86_32 debug && add_cflags -Oy-
6888     enabled debug && add_ldflags -debug
6889     enable pragma_deprecated
6890     if enabled icl; then
6891         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6892         # (correctly) on icl 13.x.
6893         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6894             add_cflags -Qansi-alias
6895         # Some inline asm is not compilable in debug
6896         if enabled debug; then
6897             disable ebp_available
6898             disable ebx_available
6899         fi
6900     fi
6901     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6902     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6903     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6904     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6905     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6906     # MSVC 2013 and newer can handle it fine.
6907     # If this declspec fails, force including stdlib.h before the restrict redefinition
6908     # happens in config.h.
6909     if [ $restrict_keyword != restrict ]; then
6910         test_cc <<EOF || add_cflags -FIstdlib.h
6911 __declspec($restrict_keyword) void *foo(int);
6912 EOF
6913     fi
6914     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6915     # Issue has been fixed in MSVC v19.00.24218.
6916     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6917         check_cflags -d2SSAOptimizer-
6918     # enable utf-8 source processing on VS2015 U2 and newer
6919     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6920         add_cflags -utf-8
6921 fi
6922
6923 for pfx in "" host_; do
6924     varname=${pfx%_}cc_type
6925     eval "type=\$$varname"
6926     if [ "$type" = "msvc" ]; then
6927         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6928 static inline int foo(int a) { return a; }
6929 EOF
6930     fi
6931 done
6932
6933 case $as_type in
6934     clang)
6935         add_asflags -Qunused-arguments
6936     ;;
6937 esac
6938
6939 case $ld_type in
6940     clang)
6941         check_ldflags -Qunused-arguments
6942     ;;
6943 esac
6944
6945 enable frame_thread_encoder
6946
6947 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6948
6949 check_deps $CONFIG_LIST       \
6950            $CONFIG_EXTRA      \
6951            $HAVE_LIST         \
6952            $ALL_COMPONENTS    \
6953
6954 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"
6955 enabled avresample && warn "Building with deprecated library libavresample"
6956
6957 case $target_os in
6958 haiku)
6959     disable memalign
6960     disable posix_memalign
6961     ;;
6962 *-dos|freedos|opendos)
6963     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6964         disable memalign
6965     fi
6966     ;;
6967 esac
6968
6969 flatten_extralibs(){
6970     nested_entries=
6971     list_name=$1
6972     eval list=\$${1}
6973     for entry in $list; do
6974         entry_copy=$entry
6975         resolve entry_copy
6976         flat_entries=
6977         for e in $entry_copy; do
6978             case $e in
6979                 *_extralibs) nested_entries="$nested_entries$e ";;
6980                           *) flat_entries="$flat_entries$e ";;
6981             esac
6982         done
6983         eval $entry="\$flat_entries"
6984     done
6985     append $list_name "$nested_entries"
6986
6987     resolve nested_entries
6988     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6989         flatten_extralibs $list_name
6990     fi
6991 }
6992
6993 flatten_extralibs_wrapper(){
6994     list_name=$1
6995     flatten_extralibs $list_name
6996     unique $list_name
6997     resolve $list_name
6998     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6999     eval printf \''%s'\' \""\$$list_name"\"
7000 }
7001
7002 for linkunit in $LIBRARY_LIST; do
7003     unset current_extralibs
7004     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7005     for comp in ${components}; do
7006         enabled $comp || continue
7007         comp_extralibs="${comp}_extralibs"
7008         append current_extralibs $comp_extralibs
7009     done
7010     eval prepend ${linkunit}_extralibs $current_extralibs
7011 done
7012
7013 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7014     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7015 done
7016
7017 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7018
7019 for thread in $THREADS_LIST; do
7020     if enabled $thread; then
7021         test -n "$thread_type" &&
7022             die "ERROR: Only one thread type must be selected." ||
7023             thread_type="$thread"
7024     fi
7025 done
7026
7027 if disabled stdatomic; then
7028     if enabled atomics_gcc; then
7029         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7030     elif enabled atomics_win32; then
7031         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7032     elif enabled atomics_suncc; then
7033         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7034     elif enabled pthreads; then
7035         add_compat atomics/pthread/stdatomic.o
7036         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7037     else
7038         enabled threads && die "Threading is enabled, but no atomics are available"
7039         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7040     fi
7041 fi
7042
7043 # Check if requested libraries were found.
7044 for lib in $AUTODETECT_LIBS; do
7045     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7046 done
7047
7048 enabled zlib && add_cppflags -DZLIB_CONST
7049
7050 # conditional library dependencies, in any order
7051 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7052 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7053 enabled afir_filter         && prepend avfilter_deps "avcodec"
7054 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7055 enabled aresample_filter    && prepend avfilter_deps "swresample"
7056 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7057 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7058 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7059 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7060 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7061 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7062 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7063 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7064 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7065 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7066 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7067 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7068 enabled pan_filter          && prepend avfilter_deps "swresample"
7069 enabled pp_filter           && prepend avfilter_deps "postproc"
7070 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7071 enabled resample_filter && prepend avfilter_deps "avresample"
7072 enabled sab_filter          && prepend avfilter_deps "swscale"
7073 enabled scale_filter    && prepend avfilter_deps "swscale"
7074 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7075 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7076 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7077 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7078 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7079 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7080 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7081 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7082 enabled spp_filter          && prepend avfilter_deps "avcodec"
7083 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7084 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7085 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7086 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7087
7088 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7089
7090 #FIXME
7091 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7092     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7093
7094 enabled opus_decoder    && prepend avcodec_deps "swresample"
7095
7096 # reorder the items at var $1 to align with the items order at var $2 .
7097 # die if an item at $1 is not at $2 .
7098 reorder_by(){
7099     eval rb_in=\$$1
7100     eval rb_ordered=\$$2
7101
7102     for rb in $rb_in; do
7103         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7104     done
7105
7106     rb_out=
7107     for rb in $rb_ordered; do
7108         is_in $rb $rb_in && rb_out="$rb_out$rb "
7109     done
7110     eval $1=\$rb_out
7111 }
7112
7113 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7114 # within a set of N items, N expansions are enough to expose a cycle.
7115 expand_deps(){
7116     unique ${1}_deps  # required for the early break test.
7117     for dummy in $LIBRARY_LIST; do  # N iteratios
7118         eval deps=\$${1}_deps
7119         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7120         unique ${1}_deps
7121         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7122     done
7123
7124     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7125     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7126 }
7127
7128 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7129 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7130
7131 map 'expand_deps $v' $LIBRARY_LIST
7132
7133 if test "$quiet" != "yes"; then
7134
7135 echo "install prefix            $prefix"
7136 echo "source path               $source_path"
7137 echo "C compiler                $cc"
7138 echo "C library                 $libc_type"
7139 if test "$host_cc" != "$cc"; then
7140     echo "host C compiler           $host_cc"
7141     echo "host C library            $host_libc_type"
7142 fi
7143 echo "ARCH                      $arch ($cpu)"
7144 if test "$build_suffix" != ""; then
7145     echo "build suffix              $build_suffix"
7146 fi
7147 if test "$progs_suffix" != ""; then
7148     echo "progs suffix              $progs_suffix"
7149 fi
7150 if test "$extra_version" != ""; then
7151     echo "version string suffix     $extra_version"
7152 fi
7153 echo "big-endian                ${bigendian-no}"
7154 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7155 if enabled x86; then
7156     echo "standalone assembly       ${x86asm-no}"
7157     echo "x86 assembler             ${x86asmexe}"
7158     echo "MMX enabled               ${mmx-no}"
7159     echo "MMXEXT enabled            ${mmxext-no}"
7160     echo "3DNow! enabled            ${amd3dnow-no}"
7161     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7162     echo "SSE enabled               ${sse-no}"
7163     echo "SSSE3 enabled             ${ssse3-no}"
7164     echo "AESNI enabled             ${aesni-no}"
7165     echo "AVX enabled               ${avx-no}"
7166     echo "AVX2 enabled              ${avx2-no}"
7167     echo "AVX-512 enabled           ${avx512-no}"
7168     echo "XOP enabled               ${xop-no}"
7169     echo "FMA3 enabled              ${fma3-no}"
7170     echo "FMA4 enabled              ${fma4-no}"
7171     echo "i686 features enabled     ${i686-no}"
7172     echo "CMOV is fast              ${fast_cmov-no}"
7173     echo "EBX available             ${ebx_available-no}"
7174     echo "EBP available             ${ebp_available-no}"
7175 fi
7176 if enabled aarch64; then
7177     echo "NEON enabled              ${neon-no}"
7178     echo "VFP enabled               ${vfp-no}"
7179 fi
7180 if enabled arm; then
7181     echo "ARMv5TE enabled           ${armv5te-no}"
7182     echo "ARMv6 enabled             ${armv6-no}"
7183     echo "ARMv6T2 enabled           ${armv6t2-no}"
7184     echo "VFP enabled               ${vfp-no}"
7185     echo "NEON enabled              ${neon-no}"
7186     echo "THUMB enabled             ${thumb-no}"
7187 fi
7188 if enabled mips; then
7189     echo "MIPS FPU enabled          ${mipsfpu-no}"
7190     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7191     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7192     echo "MIPS MSA enabled          ${msa-no}"
7193     echo "MIPS MSA2 enabled         ${msa2-no}"
7194     echo "LOONGSON MMI enabled      ${mmi-no}"
7195 fi
7196 if enabled ppc; then
7197     echo "AltiVec enabled           ${altivec-no}"
7198     echo "VSX enabled               ${vsx-no}"
7199     echo "POWER8 enabled            ${power8-no}"
7200     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7201     echo "dcbzl available           ${dcbzl-no}"
7202 fi
7203 echo "debug symbols             ${debug-no}"
7204 echo "strip symbols             ${stripping-no}"
7205 echo "optimize for size         ${small-no}"
7206 echo "optimizations             ${optimizations-no}"
7207 echo "static                    ${static-no}"
7208 echo "shared                    ${shared-no}"
7209 echo "postprocessing support    ${postproc-no}"
7210 echo "network support           ${network-no}"
7211 echo "threading support         ${thread_type-no}"
7212 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7213 echo "texi2html enabled         ${texi2html-no}"
7214 echo "perl enabled              ${perl-no}"
7215 echo "pod2man enabled           ${pod2man-no}"
7216 echo "makeinfo enabled          ${makeinfo-no}"
7217 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7218 test -n "$random_seed" &&
7219     echo "random seed               ${random_seed}"
7220 echo
7221
7222 echo "External libraries:"
7223 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7224 echo
7225
7226 echo "External libraries providing hardware acceleration:"
7227 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7228 echo
7229
7230 echo "Libraries:"
7231 print_enabled '' $LIBRARY_LIST | print_in_columns
7232 echo
7233
7234 echo "Programs:"
7235 print_enabled '' $PROGRAM_LIST | print_in_columns
7236 echo
7237
7238 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7239     echo "Enabled ${type}s:"
7240     eval list=\$$(toupper $type)_LIST
7241     print_enabled '_*' $list | print_in_columns
7242     echo
7243 done
7244
7245 if test -n "$ignore_tests"; then
7246     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7247     echo "Ignored FATE tests:"
7248     echo $ignore_tests | print_in_columns
7249     echo
7250 fi
7251
7252 echo "License: $license"
7253
7254 fi # test "$quiet" != "yes"
7255
7256 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7257     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7258         if disabled $cfg; then
7259             varname=${cfg}_disable_reason
7260             eval "warn \"Disabled $cfg because \$$varname\""
7261         fi
7262     done
7263 fi
7264
7265 if test -n "$WARNINGS"; then
7266     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7267     enabled fatal_warnings && exit 1
7268 fi
7269
7270 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7271
7272 esc(){
7273     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7274 }
7275
7276 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7277
7278 enabled stripping || strip="echo skipping strip"
7279 enabled stripping || striptype=""
7280
7281 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7282
7283 cat > ffbuild/config.mak <<EOF
7284 # Automatically generated by configure - do not modify!
7285 ifndef FFMPEG_CONFIG_MAK
7286 FFMPEG_CONFIG_MAK=1
7287 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7288 prefix=$prefix
7289 LIBDIR=\$(DESTDIR)$libdir
7290 SHLIBDIR=\$(DESTDIR)$shlibdir
7291 INCDIR=\$(DESTDIR)$incdir
7292 BINDIR=\$(DESTDIR)$bindir
7293 DATADIR=\$(DESTDIR)$datadir
7294 DOCDIR=\$(DESTDIR)$docdir
7295 MANDIR=\$(DESTDIR)$mandir
7296 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7297 INSTALL_NAME_DIR=$install_name_dir
7298 SRC_PATH=$source_path
7299 SRC_LINK=$source_link
7300 ifndef MAIN_MAKEFILE
7301 SRC_PATH:=\$(SRC_PATH:.%=..%)
7302 endif
7303 CC_IDENT=$cc_ident
7304 ARCH=$arch
7305 INTRINSICS=$intrinsics
7306 EXTERN_PREFIX=$extern_prefix
7307 CC=$cc
7308 CXX=$cxx
7309 AS=$as
7310 OBJCC=$objcc
7311 LD=$ld
7312 DEPCC=$dep_cc
7313 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7314 DEPAS=$as
7315 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7316 X86ASM=$x86asmexe
7317 DEPX86ASM=$x86asmexe
7318 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7319 AR=$ar
7320 ARFLAGS=$arflags
7321 AR_O=$ar_o
7322 AR_CMD=$ar
7323 NM_CMD=$nm
7324 RANLIB=$ranlib
7325 STRIP=$strip
7326 STRIPTYPE=$striptype
7327 NVCC=$nvcc
7328 CP=cp -p
7329 LN_S=$ln_s
7330 CPPFLAGS=$CPPFLAGS
7331 CFLAGS=$CFLAGS
7332 CXXFLAGS=$CXXFLAGS
7333 OBJCFLAGS=$OBJCFLAGS
7334 ASFLAGS=$ASFLAGS
7335 NVCCFLAGS=$nvccflags
7336 AS_C=$AS_C
7337 AS_O=$AS_O
7338 OBJCC_C=$OBJCC_C
7339 OBJCC_E=$OBJCC_E
7340 OBJCC_O=$OBJCC_O
7341 CC_C=$CC_C
7342 CC_E=$CC_E
7343 CC_O=$CC_O
7344 CXX_C=$CXX_C
7345 CXX_O=$CXX_O
7346 NVCC_C=$NVCC_C
7347 NVCC_O=$NVCC_O
7348 LD_O=$LD_O
7349 X86ASM_O=$X86ASM_O
7350 LD_LIB=$LD_LIB
7351 LD_PATH=$LD_PATH
7352 DLLTOOL=$dlltool
7353 WINDRES=$windres
7354 DEPWINDRES=$dep_cc
7355 DOXYGEN=$doxygen
7356 LDFLAGS=$LDFLAGS
7357 LDEXEFLAGS=$LDEXEFLAGS
7358 LDSOFLAGS=$LDSOFLAGS
7359 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7360 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7361 X86ASMFLAGS=$X86ASMFLAGS
7362 BUILDSUF=$build_suffix
7363 PROGSSUF=$progs_suffix
7364 FULLNAME=$FULLNAME
7365 LIBPREF=$LIBPREF
7366 LIBSUF=$LIBSUF
7367 LIBNAME=$LIBNAME
7368 SLIBPREF=$SLIBPREF
7369 SLIBSUF=$SLIBSUF
7370 EXESUF=$EXESUF
7371 EXTRA_VERSION=$extra_version
7372 CCDEP=$CCDEP
7373 CXXDEP=$CXXDEP
7374 CCDEP_FLAGS=$CCDEP_FLAGS
7375 ASDEP=$ASDEP
7376 ASDEP_FLAGS=$ASDEP_FLAGS
7377 X86ASMDEP=$X86ASMDEP
7378 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7379 CC_DEPFLAGS=$CC_DEPFLAGS
7380 AS_DEPFLAGS=$AS_DEPFLAGS
7381 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7382 HOSTCC=$host_cc
7383 HOSTLD=$host_ld
7384 HOSTCFLAGS=$host_cflags
7385 HOSTCPPFLAGS=$host_cppflags
7386 HOSTEXESUF=$HOSTEXESUF
7387 HOSTLDFLAGS=$host_ldflags
7388 HOSTEXTRALIBS=$host_extralibs
7389 DEPHOSTCC=$host_cc
7390 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7391 HOSTCCDEP=$HOSTCCDEP
7392 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7393 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7394 HOSTCC_C=$HOSTCC_C
7395 HOSTCC_O=$HOSTCC_O
7396 HOSTLD_O=$HOSTLD_O
7397 TARGET_EXEC=$target_exec $target_exec_args
7398 TARGET_PATH=$target_path
7399 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7400 CFLAGS-ffplay=${sdl2_cflags}
7401 CFLAGS_HEADERS=$CFLAGS_HEADERS
7402 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7403 EXTRALIBS=$extralibs
7404 COMPAT_OBJS=$compat_objs
7405 INSTALL=$install
7406 LIBTARGET=${LIBTARGET}
7407 SLIBNAME=${SLIBNAME}
7408 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7409 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7410 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7411 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7412 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7413 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7414 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7415 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7416 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7417 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7418 NOREDZONE_FLAGS=$noredzone_flags
7419 LIBFUZZER_PATH=$libfuzzer_path
7420 IGNORE_TESTS=$ignore_tests
7421 EOF
7422
7423 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7424
7425 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7426     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7427 done
7428
7429 cat > $TMPH <<EOF
7430 /* Automatically generated by configure - do not modify! */
7431 #ifndef FFMPEG_CONFIG_H
7432 #define FFMPEG_CONFIG_H
7433 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7434 #define FFMPEG_LICENSE "$(c_escape $license)"
7435 #define CONFIG_THIS_YEAR 2019
7436 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7437 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7438 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7439 #define av_restrict $restrict_keyword
7440 #define EXTERN_PREFIX "${extern_prefix}"
7441 #define EXTERN_ASM ${extern_prefix}
7442 #define BUILDSUF "$build_suffix"
7443 #define SLIBSUF "$SLIBSUF"
7444 #define HAVE_MMX2 HAVE_MMXEXT
7445 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7446 EOF
7447
7448 test -n "$assert_level" &&
7449     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7450
7451 test -n "$malloc_prefix" &&
7452     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7453
7454 if enabled x86asm; then
7455     append config_files $TMPASM
7456     cat > $TMPASM <<EOF
7457 ; Automatically generated by configure - do not modify!
7458 EOF
7459 fi
7460
7461 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7462
7463
7464 mkdir -p doc
7465 mkdir -p tests
7466 mkdir -p tests/api
7467 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7468
7469 print_config ARCH_   "$config_files" $ARCH_LIST
7470 print_config HAVE_   "$config_files" $HAVE_LIST
7471 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7472                                      $CONFIG_EXTRA      \
7473                                      $ALL_COMPONENTS    \
7474
7475 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7476 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7477
7478 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7479 cp_if_changed $TMPH config.h
7480 touch ffbuild/.config
7481
7482 enabled x86asm && cp_if_changed $TMPASM config.asm
7483
7484 cat > $TMPH <<EOF
7485 /* Generated by ffmpeg configure */
7486 #ifndef AVUTIL_AVCONFIG_H
7487 #define AVUTIL_AVCONFIG_H
7488 EOF
7489
7490 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7491
7492 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7493
7494 cp_if_changed $TMPH libavutil/avconfig.h
7495
7496 # full_filter_name_foo=vf_foo
7497 # full_filter_name_bar=asrc_bar
7498 # ...
7499 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7500
7501 # generate the lists of enabled components
7502 print_enabled_components(){
7503     file=$1
7504     struct_name=$2
7505     name=$3
7506     shift 3
7507     echo "static const $struct_name * const $name[] = {" > $TMPH
7508     for c in $*; do
7509         if enabled $c; then
7510             case $name in
7511                 filter_list)
7512                     eval c=\$full_filter_name_${c%_filter}
7513                 ;;
7514                 indev_list)
7515                     c=${c%_indev}_demuxer
7516                 ;;
7517                 outdev_list)
7518                     c=${c%_outdev}_muxer
7519                 ;;
7520             esac
7521             printf "    &ff_%s,\n" $c >> $TMPH
7522         fi
7523     done
7524     if [ "$name" = "filter_list" ]; then
7525         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7526             printf "    &ff_%s,\n" $c >> $TMPH
7527         done
7528     fi
7529     echo "    NULL };" >> $TMPH
7530     cp_if_changed $TMPH $file
7531 }
7532
7533 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7534 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7535 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7536 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7537 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7538 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7539 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7540 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7541 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7542
7543 # Settings for pkg-config files
7544
7545 cat > $TMPH <<EOF
7546 # Automatically generated by configure - do not modify!
7547 shared=$shared
7548 build_suffix=$build_suffix
7549 prefix=$prefix
7550 libdir=$libdir
7551 incdir=$incdir
7552 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7553 source_path=${source_path}
7554 LIBPREF=${LIBPREF}
7555 LIBSUF=${LIBSUF}
7556 extralibs_avutil="$avutil_extralibs"
7557 extralibs_avcodec="$avcodec_extralibs"
7558 extralibs_avformat="$avformat_extralibs"
7559 extralibs_avdevice="$avdevice_extralibs"
7560 extralibs_avfilter="$avfilter_extralibs"
7561 extralibs_avresample="$avresample_extralibs"
7562 extralibs_postproc="$postproc_extralibs"
7563 extralibs_swscale="$swscale_extralibs"
7564 extralibs_swresample="$swresample_extralibs"
7565 EOF
7566
7567 for lib in $LIBRARY_LIST; do
7568     lib_deps="$(eval echo \$${lib}_deps)"
7569     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7570 done
7571
7572 cp_if_changed $TMPH ffbuild/config.sh