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-libopus will enable linking to
 194   libopus and allow the libopus encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libopus.
 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-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libuavs3d       enable AVS3 decoding via libuavs3d [no]
 281   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 282   --enable-libvidstab      enable video stabilization using vid.stab [no]
 283   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 284   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 285   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 286                            native implementation exists [no]
 287   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 288   --enable-libwebp         enable WebP encoding via libwebp [no]
 289   --enable-libx264         enable H.264 encoding via x264 [no]
 290   --enable-libx265         enable HEVC encoding via x265 [no]
 291   --enable-libxavs         enable AVS encoding via xavs [no]
 292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 297   --enable-libxvid         enable Xvid encoding via xvidcore,
 298                            native MPEG-4/Xvid encoder exists [no]
 299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 300                            for dash demuxing support [no]
 301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 302   --enable-libzmq          enable message passing via libzmq [no]
 303   --enable-libzvbi         enable teletext support via libzvbi [no]
 304   --enable-lv2             enable LV2 audio filtering [no]
 305   --disable-lzma           disable lzma [autodetect]
 306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 307   --enable-mbedtls         enable mbedTLS, needed for https support
 308                            if openssl, gnutls or libtls is not used [no]
 309   --enable-mediacodec      enable Android MediaCodec support [no]
 310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 312   --enable-openal          enable OpenAL 1.1 capture support [no]
 313   --enable-opencl          enable OpenCL processing [no]
 314   --enable-opengl          enable OpenGL rendering [no]
 315   --enable-openssl         enable openssl, needed for https support
 316                            if gnutls, libtls or mbedtls is not used [no]
 317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 318   --disable-sndio          disable sndio support [autodetect]
 319   --disable-schannel       disable SChannel SSP, needed for TLS support on
 320                            Windows if openssl and gnutls are not used [autodetect]
 321   --disable-sdl2           disable sdl2 [autodetect]
 322   --disable-securetransport disable Secure Transport, needed for TLS support
 323                            on OSX if openssl and gnutls are not used [autodetect]
 324   --enable-vapoursynth     enable VapourSynth demuxer [no]
 325   --enable-vulkan          enable Vulkan code [no]
 326   --disable-xlib           disable xlib [autodetect]
 327   --disable-zlib           disable zlib [autodetect]
 328
 329   The following libraries provide various hardware acceleration features:
 330   --disable-amf            disable AMF video encoding code [autodetect]
 331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 338   --enable-libdrm          enable DRM code (Linux) [no]
 339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 344   --enable-omx             enable OpenMAX IL code [no]
 345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 351
 352 Toolchain options:
 353   --arch=ARCH              select architecture [$arch]
 354   --cpu=CPU                select the minimum required CPU (affects
 355                            instruction selection, may crash on older CPUs)
 356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 357   --progs-suffix=SUFFIX    program name suffix []
 358   --enable-cross-compile   assume a cross-compiler is used
 359   --sysroot=PATH           root of cross-build tree
 360   --sysinclude=PATH        location of cross-build system headers
 361   --target-os=OS           compiler targets OS [$target_os]
 362   --target-exec=CMD        command to run executables on target
 363   --target-path=DIR        path to view of build directory on target
 364   --target-samples=DIR     path to samples directory on target
 365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 366   --toolchain=NAME         set tool defaults according to NAME
 367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 369                            valgrind-massif, valgrind-memcheck,
 370                            msvc, icl, gcov, llvm-cov, hardened)
 371   --nm=NM                  use nm tool NM [$nm_default]
 372   --ar=AR                  use archive tool AR [$ar_default]
 373   --as=AS                  use assembler AS [$as_default]
 374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 375   --strip=STRIP            use strip tool STRIP [$strip_default]
 376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 378   --cc=CC                  use C compiler CC [$cc_default]
 379   --cxx=CXX                use C compiler CXX [$cxx_default]
 380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 383   --ld=LD                  use linker LD [$ld_default]
 384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 388   --host-cc=HOSTCC         use host C compiler HOSTCC
 389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 391   --host-ld=HOSTLD         use host linker HOSTLD
 392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 394   --host-os=OS             compiler host OS [$target_os]
 395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 402   --extra-version=STRING   version string suffix []
 403   --optflags=OPTFLAGS      override optimization-related compiler flags
 404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 405   --build-suffix=SUFFIX    library name suffix []
 406   --enable-pic             build position-independent code
 407   --enable-thumb           compile for Thumb instruction set
 408   --enable-lto             use link-time optimization
 409   --env="ENV=override"     override the environment variables
 410
 411 Advanced options (experts only):
 412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 413   --custom-allocator=NAME  use a supported custom allocator
 414   --disable-symver         disable symbol versioning
 415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 416   --disable-safe-bitstream-reader
 417                            disable buffer boundary checking in bitreaders
 418                            (faster, but may crash)
 419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 420
 421 Optimization options (experts only):
 422   --disable-asm            disable all assembly optimizations
 423   --disable-altivec        disable AltiVec optimizations
 424   --disable-vsx            disable VSX optimizations
 425   --disable-power8         disable POWER8 optimizations
 426   --disable-amd3dnow       disable 3DNow! optimizations
 427   --disable-amd3dnowext    disable 3DNow! extended optimizations
 428   --disable-mmx            disable MMX optimizations
 429   --disable-mmxext         disable MMXEXT optimizations
 430   --disable-sse            disable SSE optimizations
 431   --disable-sse2           disable SSE2 optimizations
 432   --disable-sse3           disable SSE3 optimizations
 433   --disable-ssse3          disable SSSE3 optimizations
 434   --disable-sse4           disable SSE4 optimizations
 435   --disable-sse42          disable SSE4.2 optimizations
 436   --disable-avx            disable AVX optimizations
 437   --disable-xop            disable XOP optimizations
 438   --disable-fma3           disable FMA3 optimizations
 439   --disable-fma4           disable FMA4 optimizations
 440   --disable-avx2           disable AVX2 optimizations
 441   --disable-avx512         disable AVX-512 optimizations
 442   --disable-aesni          disable AESNI optimizations
 443   --disable-armv5te        disable armv5te optimizations
 444   --disable-armv6          disable armv6 optimizations
 445   --disable-armv6t2        disable armv6t2 optimizations
 446   --disable-vfp            disable VFP optimizations
 447   --disable-neon           disable NEON optimizations
 448   --disable-inline-asm     disable use of inline assembly
 449   --disable-x86asm         disable use of standalone x86 assembly
 450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 452   --disable-msa            disable MSA optimizations
 453   --disable-msa2           disable MSA2 optimizations
 454   --disable-mipsfpu        disable floating point MIPS optimizations
 455   --disable-mmi            disable Loongson SIMD optimizations
 456   --disable-fast-unaligned consider unaligned accesses slow
 457
 458 Developer options (useful when working on FFmpeg itself):
 459   --disable-debug          disable debugging symbols
 460   --enable-debug=LEVEL     set the debug level [$debuglevel]
 461   --disable-optimizations  disable compiler optimizations
 462   --enable-extra-warnings  enable more compiler warnings
 463   --disable-stripping      disable stripping of executables and shared libraries
 464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 465                            2 causes a slowdown at runtime.
 466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 468                            leaks and errors, using the specified valgrind binary.
 469                            Cannot be combined with --target-exec
 470   --enable-ftrapv          Trap arithmetic overflows
 471   --samples=PATH           location of test samples for FATE, if not set use
 472                            \$FATE_SAMPLES at make invocation time.
 473   --enable-neon-clobber-test check NEON registers for clobbering (should be
 474                            used only for debugging purposes)
 475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 476                            should be used only for debugging purposes)
 477   --enable-random          randomly enable/disable components
 478   --disable-random
 479   --enable-random=LIST     randomly enable/disable specific components or
 480   --disable-random=LIST    component groups. LIST is a comma-separated list
 481                            of NAME[:PROB] entries where NAME is a component
 482                            (group) and PROB the probability associated with
 483                            NAME (default 0.5).
 484   --random-seed=VALUE      seed value for --enable/disable-random
 485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 486                            (only applies to --disable-optimizations builds)
 487   --enable-ossfuzz         Enable building fuzzer tool
 488   --libfuzzer=PATH         path to libfuzzer
 489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 490                            in the name) of tests whose result is ignored
 491   --enable-linux-perf      enable Linux Performance Monitor API
 492   --disable-large-tests    disable tests that use a large amount of memory
 493
 494 NOTE: Object files are built at the place where configure is launched.
 495 EOF
 496   exit 0
 497 }
 498
 499 if test -t 1 && which tput >/dev/null 2>&1; then
 500     ncolors=$(tput colors)
 501     if test -n "$ncolors" && test $ncolors -ge 8; then
 502         bold_color=$(tput bold)
 503         warn_color=$(tput setaf 3)
 504         error_color=$(tput setaf 1)
 505         reset_color=$(tput sgr0)
 506     fi
 507     # 72 used instead of 80 since that's the default of pr
 508     ncols=$(tput cols)
 509 fi
 510 : ${ncols:=72}
 511
 512 log(){
 513     echo "$@" >> $logfile
 514 }
 515
 516 log_file(){
 517     log BEGIN "$1"
 518     log_file_i=1
 519     while IFS= read -r log_file_line; do
 520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 521         log_file_i=$(($log_file_i+1))
 522     done < "$1" >> "$logfile"
 523     log END "$1"
 524 }
 525
 526 warn(){
 527     log "WARNING: $*"
 528     WARNINGS="${WARNINGS}WARNING: $*\n"
 529 }
 530
 531 die(){
 532     log "$@"
 533     echo "$error_color$bold_color$@$reset_color"
 534     cat <<EOF
 535
 536 If you think configure made a mistake, make sure you are using the latest
 537 version from Git.  If the latest version fails, report the problem to the
 538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 539 EOF
 540     if disabled logging; then
 541         cat <<EOF
 542 Rerun configure with logging enabled (do not use --disable-logging), and
 543 include the log this produces with your report.
 544 EOF
 545     else
 546         cat <<EOF
 547 Include the log file "$logfile" produced by configure as this will help
 548 solve the problem.
 549 EOF
 550     fi
 551     exit 1
 552 }
 553
 554 # Avoid locale weirdness, besides we really just want to translate ASCII.
 555 toupper(){
 556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 557 }
 558
 559 tolower(){
 560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 561 }
 562
 563 c_escape(){
 564     echo "$*" | sed 's/["\\]/\\\0/g'
 565 }
 566
 567 sh_quote(){
 568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 570     echo "$v"
 571 }
 572
 573 cleanws(){
 574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 575 }
 576
 577 filter(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 filter_out(){
 586     pat=$1
 587     shift
 588     for v; do
 589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 590     done
 591 }
 592
 593 map(){
 594     m=$1
 595     shift
 596     for v; do eval $m; done
 597 }
 598
 599 add_suffix(){
 600     suffix=$1
 601     shift
 602     for v; do echo ${v}${suffix}; done
 603 }
 604
 605 remove_suffix(){
 606     suffix=$1
 607     shift
 608     for v; do echo ${v%$suffix}; done
 609 }
 610
 611 set_all(){
 612     value=$1
 613     shift
 614     for var in $*; do
 615         eval $var=$value
 616     done
 617 }
 618
 619 set_weak(){
 620     value=$1
 621     shift
 622     for var; do
 623         eval : \${$var:=$value}
 624     done
 625 }
 626
 627 sanitize_var_name(){
 628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 629 }
 630
 631 set_sanitized(){
 632     var=$1
 633     shift
 634     eval $(sanitize_var_name "$var")='$*'
 635 }
 636
 637 get_sanitized(){
 638     eval echo \$$(sanitize_var_name "$1")
 639 }
 640
 641 pushvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:=0}
 644         eval ${pvar}_${level}="\$$pvar"
 645         eval ${pvar}_level=$(($level+1))
 646     done
 647 }
 648
 649 popvar(){
 650     for pvar in $*; do
 651         eval level=\${${pvar}_level:-0}
 652         test $level = 0 && continue
 653         eval level=$(($level-1))
 654         eval $pvar="\${${pvar}_${level}}"
 655         eval ${pvar}_level=$level
 656         eval unset ${pvar}_${level}
 657     done
 658 }
 659
 660 request(){
 661     for var in $*; do
 662         eval ${var}_requested=yes
 663         eval $var=
 664     done
 665 }
 666
 667 warn_if_gets_disabled(){
 668     for var in $*; do
 669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 670     done
 671 }
 672
 673 enable(){
 674     set_all yes $*
 675 }
 676
 677 disable(){
 678     set_all no $*
 679 }
 680
 681 disable_with_reason(){
 682     disable $1
 683     eval "${1}_disable_reason=\"$2\""
 684     if requested $1; then
 685         die "ERROR: $1 requested, but $2"
 686     fi
 687 }
 688
 689 enable_weak(){
 690     set_weak yes $*
 691 }
 692
 693 disable_weak(){
 694     set_weak no $*
 695 }
 696
 697 enable_sanitized(){
 698     for var; do
 699         enable $(sanitize_var_name $var)
 700     done
 701 }
 702
 703 disable_sanitized(){
 704     for var; do
 705         disable $(sanitize_var_name $var)
 706     done
 707 }
 708
 709 do_enable_deep(){
 710     for var; do
 711         enabled $var && continue
 712         set -- $var
 713         eval enable_deep \$${var}_select
 714         var=$1
 715         eval enable_deep_weak \$${var}_suggest
 716     done
 717 }
 718
 719 enable_deep(){
 720     do_enable_deep $*
 721     enable $*
 722 }
 723
 724 enable_deep_weak(){
 725     for var; do
 726         disabled $var && continue
 727         set -- $var
 728         do_enable_deep $var
 729         var=$1
 730         enable_weak $var
 731     done
 732 }
 733
 734 requested(){
 735     test "${1#!}" = "$1" && op="=" || op="!="
 736     eval test "x\$${1#!}_requested" $op "xyes"
 737 }
 738
 739 enabled(){
 740     test "${1#!}" = "$1" && op="=" || op="!="
 741     eval test "x\$${1#!}" $op "xyes"
 742 }
 743
 744 disabled(){
 745     test "${1#!}" = "$1" && op="=" || op="!="
 746     eval test "x\$${1#!}" $op "xno"
 747 }
 748
 749 enabled_all(){
 750     for opt; do
 751         enabled $opt || return 1
 752     done
 753 }
 754
 755 disabled_all(){
 756     for opt; do
 757         disabled $opt || return 1
 758     done
 759 }
 760
 761 enabled_any(){
 762     for opt; do
 763         enabled $opt && return 0
 764     done
 765 }
 766
 767 disabled_any(){
 768     for opt; do
 769         disabled $opt && return 0
 770     done
 771     return 1
 772 }
 773
 774 set_default(){
 775     for opt; do
 776         eval : \${$opt:=\$${opt}_default}
 777     done
 778 }
 779
 780 is_in(){
 781     value=$1
 782     shift
 783     for var in $*; do
 784         [ $var = $value ] && return 0
 785     done
 786     return 1
 787 }
 788
 789 # The cfg loop is very hot (several thousands iterations), and in bash also
 790 # potentialy quite slow. Try to abort the iterations early, preferably without
 791 # calling functions. 70%+ of the time cfg is already done or without deps.
 792 check_deps(){
 793     for cfg; do
 794         eval [ x\$${cfg}_checking = xdone ] && continue
 795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 796
 797         eval "
 798         dep_all=\$${cfg}_deps
 799         dep_any=\$${cfg}_deps_any
 800         dep_con=\$${cfg}_conflict
 801         dep_sel=\$${cfg}_select
 802         dep_sgs=\$${cfg}_suggest
 803         dep_ifa=\$${cfg}_if
 804         dep_ifn=\$${cfg}_if_any
 805         "
 806
 807         # most of the time here $cfg has no deps - avoid costly no-op work
 808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 809             eval ${cfg}_checking=inprogress
 810
 811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 814
 815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 821
 822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 823
 824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 825                 # filter out library deps, these do not belong in extralibs
 826                 is_in $dep $LIBRARY_LIST && continue
 827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 828             done
 829         fi
 830
 831         eval ${cfg}_checking=done
 832     done
 833 }
 834
 835 print_config(){
 836     pfx=$1
 837     files=$2
 838     shift 2
 839     map 'eval echo "$v \${$v:-no}"' "$@" |
 840     awk "BEGIN { split(\"$files\", files) }
 841         {
 842             c = \"$pfx\" toupper(\$1);
 843             v = \$2;
 844             sub(/yes/, 1, v);
 845             sub(/no/,  0, v);
 846             for (f in files) {
 847                 file = files[f];
 848                 if (file ~ /\\.h\$/) {
 849                     printf(\"#define %s %d\\n\", c, v) >>file;
 850                 } else if (file ~ /\\.asm\$/) {
 851                     printf(\"%%define %s %d\\n\", c, v) >>file;
 852                 } else if (file ~ /\\.mak\$/) {
 853                     n = -v ? \"\" : \"!\";
 854                     printf(\"%s%s=yes\\n\", n, c) >>file;
 855                 } else if (file ~ /\\.texi\$/) {
 856                     pre = -v ? \"\" : \"@c \";
 857                     yesno = \$2;
 858                     c2 = tolower(c);
 859                     gsub(/_/, \"-\", c2);
 860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 861                 }
 862             }
 863         }"
 864 }
 865
 866 print_enabled(){
 867     suf=$1
 868     shift
 869     for v; do
 870         enabled $v && printf "%s\n" ${v%$suf}
 871     done
 872 }
 873
 874 append(){
 875     var=$1
 876     shift
 877     eval "$var=\"\$$var $*\""
 878 }
 879
 880 prepend(){
 881     var=$1
 882     shift
 883     eval "$var=\"$* \$$var\""
 884 }
 885
 886 reverse () {
 887     eval '
 888         reverse_out=
 889         for v in $'$1'; do
 890             reverse_out="$v $reverse_out"
 891         done
 892         '$1'=$reverse_out
 893     '
 894 }
 895
 896 # keeps the last occurence of each non-unique item
 897 unique(){
 898     unique_out=
 899     eval unique_in=\$$1
 900     reverse unique_in
 901     for v in $unique_in; do
 902         # " $unique_out" +space such that every item is surrounded with spaces
 903         case " $unique_out" in *" $v "*) continue; esac  # already in list
 904         unique_out="$unique_out$v "
 905     done
 906     reverse unique_out
 907     eval $1=\$unique_out
 908 }
 909
 910 resolve(){
 911     resolve_out=
 912     eval resolve_in=\$$1
 913     for v in $resolve_in; do
 914         eval 'resolve_out="$resolve_out$'$v' "'
 915     done
 916     eval $1=\$resolve_out
 917 }
 918
 919 add_cppflags(){
 920     append CPPFLAGS "$@"
 921 }
 922
 923 add_cflags(){
 924     append CFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_cflags_headers(){
 928     append CFLAGS_HEADERS $($cflags_filter "$@")
 929 }
 930
 931 add_cxxflags(){
 932     append CXXFLAGS $($cflags_filter "$@")
 933 }
 934
 935 add_objcflags(){
 936     append OBJCFLAGS $($objcflags_filter "$@")
 937 }
 938
 939 add_asflags(){
 940     append ASFLAGS $($asflags_filter "$@")
 941 }
 942
 943 add_ldflags(){
 944     append LDFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldexeflags(){
 948     append LDEXEFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_ldsoflags(){
 952     append LDSOFLAGS $($ldflags_filter "$@")
 953 }
 954
 955 add_extralibs(){
 956     prepend extralibs $($ldflags_filter "$@")
 957 }
 958
 959 add_stripflags(){
 960     append ASMSTRIPFLAGS "$@"
 961 }
 962
 963 add_host_cppflags(){
 964     append host_cppflags "$@"
 965 }
 966
 967 add_host_cflags(){
 968     append host_cflags $($host_cflags_filter "$@")
 969 }
 970
 971 add_host_ldflags(){
 972     append host_ldflags $($host_ldflags_filter "$@")
 973 }
 974
 975 add_compat(){
 976     append compat_objs $1
 977     shift
 978     map 'add_cppflags -D$v' "$@"
 979 }
 980
 981 test_cmd(){
 982     log "$@"
 983     "$@" >> $logfile 2>&1
 984 }
 985
 986 test_stat(){
 987     log test_stat "$@"
 988     stat "$1" >> $logfile 2>&1
 989 }
 990
 991 cc_e(){
 992     eval printf '%s\\n' $CC_E
 993 }
 994
 995 cc_o(){
 996     eval printf '%s\\n' $CC_O
 997 }
 998
 999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libuavs3d
1815     libv4l2
1816     libvmaf
1817     libvorbis
1818     libvpx
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_dma_buf_h
2129     linux_perf_event_h
2130     machine_ioctl_bt848_h
2131     machine_ioctl_meteor_h
2132     malloc_h
2133     opencv2_core_core_c_h
2134     OpenGL_gl3_h
2135     poll_h
2136     sys_param_h
2137     sys_resource_h
2138     sys_select_h
2139     sys_soundcard_h
2140     sys_time_h
2141     sys_un_h
2142     sys_videoio_h
2143     termios_h
2144     udplite_h
2145     unistd_h
2146     valgrind_valgrind_h
2147     windows_h
2148     winsock2_h
2149 "
2150
2151 INTRINSICS_LIST="
2152     intrinsics_neon
2153 "
2154
2155 COMPLEX_FUNCS="
2156     cabs
2157     cexp
2158 "
2159
2160 MATH_FUNCS="
2161     atanf
2162     atan2f
2163     cbrt
2164     cbrtf
2165     copysign
2166     cosf
2167     erf
2168     exp2
2169     exp2f
2170     expf
2171     hypot
2172     isfinite
2173     isinf
2174     isnan
2175     ldexpf
2176     llrint
2177     llrintf
2178     log2
2179     log2f
2180     log10f
2181     lrint
2182     lrintf
2183     powf
2184     rint
2185     round
2186     roundf
2187     sinf
2188     trunc
2189     truncf
2190 "
2191
2192 SYSTEM_FEATURES="
2193     dos_paths
2194     libc_msvcrt
2195     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2196     section_data_rel_ro
2197     threads
2198     uwp
2199     winrt
2200 "
2201
2202 SYSTEM_FUNCS="
2203     access
2204     aligned_malloc
2205     arc4random
2206     clock_gettime
2207     closesocket
2208     CommandLineToArgvW
2209     fcntl
2210     getaddrinfo
2211     gethrtime
2212     getopt
2213     GetModuleHandle
2214     GetProcessAffinityMask
2215     GetProcessMemoryInfo
2216     GetProcessTimes
2217     getrusage
2218     GetStdHandle
2219     GetSystemTimeAsFileTime
2220     gettimeofday
2221     glob
2222     glXGetProcAddress
2223     gmtime_r
2224     inet_aton
2225     isatty
2226     kbhit
2227     localtime_r
2228     lstat
2229     lzo1x_999_compress
2230     mach_absolute_time
2231     MapViewOfFile
2232     memalign
2233     mkstemp
2234     mmap
2235     mprotect
2236     nanosleep
2237     PeekNamedPipe
2238     posix_memalign
2239     pthread_cancel
2240     sched_getaffinity
2241     SecItemImport
2242     SetConsoleTextAttribute
2243     SetConsoleCtrlHandler
2244     SetDllDirectory
2245     setmode
2246     setrlimit
2247     Sleep
2248     strerror_r
2249     sysconf
2250     sysctl
2251     usleep
2252     UTGetOSTypeFromString
2253     VirtualAlloc
2254     wglGetProcAddress
2255 "
2256
2257 SYSTEM_LIBRARIES="
2258     bcrypt
2259     vaapi_drm
2260     vaapi_x11
2261     vdpau_x11
2262 "
2263
2264 TOOLCHAIN_FEATURES="
2265     as_arch_directive
2266     as_dn_directive
2267     as_fpu_directive
2268     as_func
2269     as_object_arch
2270     asm_mod_q
2271     blocks_extension
2272     ebp_available
2273     ebx_available
2274     gnu_as
2275     gnu_windres
2276     ibm_asm
2277     inline_asm_direct_symbol_refs
2278     inline_asm_labels
2279     inline_asm_nonlocal_labels
2280     pragma_deprecated
2281     rsync_contimeout
2282     symver_asm_label
2283     symver_gnu_asm
2284     vfp_args
2285     xform_asm
2286     xmm_clobbers
2287 "
2288
2289 TYPES_LIST="
2290     kCMVideoCodecType_HEVC
2291     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2292     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2293     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2294     kCVImageBufferTransferFunction_Linear
2295     socklen_t
2296     struct_addrinfo
2297     struct_group_source_req
2298     struct_ip_mreq_source
2299     struct_ipv6_mreq
2300     struct_msghdr_msg_flags
2301     struct_pollfd
2302     struct_rusage_ru_maxrss
2303     struct_sctp_event_subscribe
2304     struct_sockaddr_in6
2305     struct_sockaddr_sa_len
2306     struct_sockaddr_storage
2307     struct_stat_st_mtim_tv_nsec
2308     struct_v4l2_frmivalenum_discrete
2309 "
2310
2311 HAVE_LIST="
2312     $ARCH_EXT_LIST
2313     $(add_suffix _external $ARCH_EXT_LIST)
2314     $(add_suffix _inline   $ARCH_EXT_LIST)
2315     $ARCH_FEATURES
2316     $BUILTIN_LIST
2317     $COMPLEX_FUNCS
2318     $HAVE_LIST_CMDLINE
2319     $HAVE_LIST_PUB
2320     $HEADERS_LIST
2321     $INTRINSICS_LIST
2322     $MATH_FUNCS
2323     $SYSTEM_FEATURES
2324     $SYSTEM_FUNCS
2325     $SYSTEM_LIBRARIES
2326     $THREADS_LIST
2327     $TOOLCHAIN_FEATURES
2328     $TYPES_LIST
2329     libdrm_getfb2
2330     makeinfo
2331     makeinfo_html
2332     opencl_d3d11
2333     opencl_drm_arm
2334     opencl_drm_beignet
2335     opencl_dxva2
2336     opencl_vaapi_beignet
2337     opencl_vaapi_intel_media
2338     perl
2339     pod2man
2340     texi2html
2341 "
2342
2343 # options emitted with CONFIG_ prefix but not available on the command line
2344 CONFIG_EXTRA="
2345     aandcttables
2346     ac3dsp
2347     adts_header
2348     atsc_a53
2349     audio_frame_queue
2350     audiodsp
2351     blockdsp
2352     bswapdsp
2353     cabac
2354     cbs
2355     cbs_av1
2356     cbs_h264
2357     cbs_h265
2358     cbs_jpeg
2359     cbs_mpeg2
2360     cbs_vp9
2361     dirac_parse
2362     dnn
2363     dvprofile
2364     exif
2365     faandct
2366     faanidct
2367     fdctdsp
2368     flacdsp
2369     fmtconvert
2370     frame_thread_encoder
2371     g722dsp
2372     golomb
2373     gplv3
2374     h263dsp
2375     h264chroma
2376     h264dsp
2377     h264parse
2378     h264pred
2379     h264qpel
2380     hevcparse
2381     hpeldsp
2382     huffman
2383     huffyuvdsp
2384     huffyuvencdsp
2385     idctdsp
2386     iirfilter
2387     mdct15
2388     intrax8
2389     iso_media
2390     ividsp
2391     jpegtables
2392     lgplv3
2393     libx262
2394     llauddsp
2395     llviddsp
2396     llvidencdsp
2397     lpc
2398     lzf
2399     me_cmp
2400     mpeg_er
2401     mpegaudio
2402     mpegaudiodsp
2403     mpegaudioheader
2404     mpegvideo
2405     mpegvideoenc
2406     mss34dsp
2407     pixblockdsp
2408     qpeldsp
2409     qsv
2410     qsvdec
2411     qsvenc
2412     qsvvpp
2413     rangecoder
2414     riffdec
2415     riffenc
2416     rtpdec
2417     rtpenc_chain
2418     rv34dsp
2419     scene_sad
2420     sinewin
2421     snappy
2422     srtp
2423     startcode
2424     texturedsp
2425     texturedspenc
2426     tpeldsp
2427     vaapi_1
2428     vaapi_encode
2429     vc1dsp
2430     videodsp
2431     vp3dsp
2432     vp56dsp
2433     vp8dsp
2434     wma_freqs
2435     wmv2dsp
2436 "
2437
2438 CMDLINE_SELECT="
2439     $ARCH_EXT_LIST
2440     $CONFIG_LIST
2441     $HAVE_LIST_CMDLINE
2442     $THREADS_LIST
2443     asm
2444     cross_compile
2445     debug
2446     extra_warnings
2447     logging
2448     lto
2449     optimizations
2450     rpath
2451     stripping
2452 "
2453
2454 PATHS_LIST="
2455     bindir
2456     datadir
2457     docdir
2458     incdir
2459     libdir
2460     mandir
2461     pkgconfigdir
2462     prefix
2463     shlibdir
2464     install_name_dir
2465 "
2466
2467 CMDLINE_SET="
2468     $PATHS_LIST
2469     ar
2470     arch
2471     as
2472     assert_level
2473     build_suffix
2474     cc
2475     objcc
2476     cpu
2477     cross_prefix
2478     custom_allocator
2479     cxx
2480     dep_cc
2481     doxygen
2482     env
2483     extra_version
2484     gas
2485     host_cc
2486     host_cflags
2487     host_extralibs
2488     host_ld
2489     host_ldflags
2490     host_os
2491     ignore_tests
2492     install
2493     ld
2494     ln_s
2495     logfile
2496     malloc_prefix
2497     nm
2498     optflags
2499     nvcc
2500     nvccflags
2501     pkg_config
2502     pkg_config_flags
2503     progs_suffix
2504     random_seed
2505     ranlib
2506     samples
2507     strip
2508     sws_max_filter_size
2509     sysinclude
2510     sysroot
2511     target_exec
2512     target_os
2513     target_path
2514     target_samples
2515     tempprefix
2516     toolchain
2517     valgrind
2518     windres
2519     x86asmexe
2520 "
2521
2522 CMDLINE_APPEND="
2523     extra_cflags
2524     extra_cxxflags
2525     extra_objcflags
2526     host_cppflags
2527 "
2528
2529 # code dependency declarations
2530
2531 # architecture extensions
2532
2533 armv5te_deps="arm"
2534 armv6_deps="arm"
2535 armv6t2_deps="arm"
2536 armv8_deps="aarch64"
2537 neon_deps_any="aarch64 arm"
2538 intrinsics_neon_deps="neon"
2539 vfp_deps_any="aarch64 arm"
2540 vfpv3_deps="vfp"
2541 setend_deps="arm"
2542
2543 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2544
2545 altivec_deps="ppc"
2546 dcbzl_deps="ppc"
2547 ldbrx_deps="ppc"
2548 ppc4xx_deps="ppc"
2549 vsx_deps="altivec"
2550 power8_deps="vsx"
2551
2552 loongson2_deps="mips"
2553 loongson3_deps="mips"
2554 mips32r2_deps="mips"
2555 mips32r5_deps="mips"
2556 mips32r6_deps="mips"
2557 mips64r2_deps="mips"
2558 mips64r6_deps="mips"
2559 mipsfpu_deps="mips"
2560 mipsdsp_deps="mips"
2561 mipsdspr2_deps="mips"
2562 mmi_deps_any="loongson2 loongson3"
2563 msa_deps="mipsfpu"
2564 msa2_deps="msa"
2565
2566 cpunop_deps="i686"
2567 x86_64_select="i686"
2568 x86_64_suggest="fast_cmov"
2569
2570 amd3dnow_deps="mmx"
2571 amd3dnowext_deps="amd3dnow"
2572 i686_deps="x86"
2573 mmx_deps="x86"
2574 mmxext_deps="mmx"
2575 sse_deps="mmxext"
2576 sse2_deps="sse"
2577 sse3_deps="sse2"
2578 ssse3_deps="sse3"
2579 sse4_deps="ssse3"
2580 sse42_deps="sse4"
2581 aesni_deps="sse42"
2582 avx_deps="sse42"
2583 xop_deps="avx"
2584 fma3_deps="avx"
2585 fma4_deps="avx"
2586 avx2_deps="avx"
2587 avx512_deps="avx2"
2588
2589 mmx_external_deps="x86asm"
2590 mmx_inline_deps="inline_asm x86"
2591 mmx_suggest="mmx_external mmx_inline"
2592
2593 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2594     eval dep=\$${ext}_deps
2595     eval ${ext}_external_deps='"${dep}_external"'
2596     eval ${ext}_inline_deps='"${dep}_inline"'
2597     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2598 done
2599
2600 aligned_stack_if_any="aarch64 ppc x86"
2601 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2602 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2603 fast_unaligned_if_any="aarch64 ppc x86"
2604 simd_align_16_if_any="altivec neon sse"
2605 simd_align_32_if_any="avx"
2606 simd_align_64_if_any="avx512"
2607
2608 # system capabilities
2609 linux_perf_deps="linux_perf_event_h"
2610 symver_if_any="symver_asm_label symver_gnu_asm"
2611 valgrind_backtrace_conflict="optimizations"
2612 valgrind_backtrace_deps="valgrind_valgrind_h"
2613
2614 # threading support
2615 atomics_gcc_if="sync_val_compare_and_swap"
2616 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2617 atomics_win32_if="MemoryBarrier"
2618 atomics_native_if_any="$ATOMICS_LIST"
2619 w32threads_deps="atomics_native"
2620 threads_if_any="$THREADS_LIST"
2621
2622 # subsystems
2623 cbs_av1_select="cbs"
2624 cbs_h264_select="cbs"
2625 cbs_h265_select="cbs"
2626 cbs_jpeg_select="cbs"
2627 cbs_mpeg2_select="cbs"
2628 cbs_vp9_select="cbs"
2629 dct_select="rdft"
2630 dirac_parse_select="golomb"
2631 dnn_suggest="libtensorflow libopenvino"
2632 dnn_deps="swscale"
2633 error_resilience_select="me_cmp"
2634 faandct_deps="faan"
2635 faandct_select="fdctdsp"
2636 faanidct_deps="faan"
2637 faanidct_select="idctdsp"
2638 h264dsp_select="startcode"
2639 hevcparse_select="atsc_a53 golomb"
2640 frame_thread_encoder_deps="encoders threads"
2641 intrax8_select="blockdsp idctdsp"
2642 mdct_select="fft"
2643 mdct15_select="fft"
2644 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2645 mpeg_er_select="error_resilience"
2646 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2647 mpegaudiodsp_select="dct"
2648 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2649 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2650 vc1dsp_select="h264chroma qpeldsp startcode"
2651 rdft_select="fft"
2652
2653 # decoders / encoders
2654 aac_decoder_select="adts_header mdct15 mdct sinewin"
2655 aac_fixed_decoder_select="adts_header mdct sinewin"
2656 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2657 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2658 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2659 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2660 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2661 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2662 acelp_kelvin_decoder_select="audiodsp"
2663 adpcm_g722_decoder_select="g722dsp"
2664 adpcm_g722_encoder_select="g722dsp"
2665 aic_decoder_select="golomb idctdsp"
2666 alac_encoder_select="lpc"
2667 als_decoder_select="bswapdsp"
2668 amrnb_decoder_select="lsp"
2669 amrwb_decoder_select="lsp"
2670 amv_decoder_select="sp5x_decoder exif"
2671 amv_encoder_select="jpegtables mpegvideoenc"
2672 ape_decoder_select="bswapdsp llauddsp"
2673 apng_decoder_deps="zlib"
2674 apng_encoder_deps="zlib"
2675 apng_encoder_select="llvidencdsp"
2676 aptx_decoder_select="audio_frame_queue"
2677 aptx_encoder_select="audio_frame_queue"
2678 aptx_hd_decoder_select="audio_frame_queue"
2679 aptx_hd_encoder_select="audio_frame_queue"
2680 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2681 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2682 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2683 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2684 atrac1_decoder_select="mdct sinewin"
2685 atrac3_decoder_select="mdct"
2686 atrac3al_decoder_select="mdct"
2687 atrac3p_decoder_select="mdct sinewin"
2688 atrac3pal_decoder_select="mdct sinewin"
2689 atrac9_decoder_select="mdct"
2690 av1_decoder_select="cbs_av1"
2691 avrn_decoder_select="exif jpegtables"
2692 bink_decoder_select="blockdsp hpeldsp"
2693 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2694 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2695 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2696 clearvideo_decoder_select="idctdsp"
2697 cllc_decoder_select="bswapdsp"
2698 comfortnoise_encoder_select="lpc"
2699 cook_decoder_select="audiodsp mdct sinewin"
2700 cscd_decoder_select="lzo"
2701 cscd_decoder_suggest="zlib"
2702 dca_decoder_select="mdct"
2703 dca_encoder_select="mdct"
2704 dds_decoder_select="texturedsp"
2705 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2706 dnxhd_decoder_select="blockdsp idctdsp"
2707 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2708 dolby_e_decoder_select="mdct"
2709 dvvideo_decoder_select="dvprofile idctdsp"
2710 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2711 dxa_decoder_deps="zlib"
2712 dxv_decoder_select="lzf texturedsp"
2713 eac3_decoder_select="ac3_decoder"
2714 eac3_encoder_select="ac3_encoder"
2715 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2716 eatgq_decoder_select="aandcttables"
2717 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2718 exr_decoder_deps="zlib"
2719 ffv1_decoder_select="rangecoder"
2720 ffv1_encoder_select="rangecoder"
2721 ffvhuff_decoder_select="huffyuv_decoder"
2722 ffvhuff_encoder_select="huffyuv_encoder"
2723 fic_decoder_select="golomb"
2724 flac_decoder_select="flacdsp"
2725 flac_encoder_select="bswapdsp flacdsp lpc"
2726 flashsv2_decoder_deps="zlib"
2727 flashsv2_encoder_deps="zlib"
2728 flashsv_decoder_deps="zlib"
2729 flashsv_encoder_deps="zlib"
2730 flv_decoder_select="h263_decoder"
2731 flv_encoder_select="h263_encoder"
2732 fourxm_decoder_select="blockdsp bswapdsp"
2733 fraps_decoder_select="bswapdsp huffman"
2734 g2m_decoder_deps="zlib"
2735 g2m_decoder_select="blockdsp idctdsp jpegtables"
2736 g729_decoder_select="audiodsp"
2737 h261_decoder_select="mpegvideo"
2738 h261_encoder_select="mpegvideoenc"
2739 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2740 h263_encoder_select="h263dsp mpegvideoenc"
2741 h263i_decoder_select="h263_decoder"
2742 h263p_decoder_select="h263_decoder"
2743 h263p_encoder_select="h263_encoder"
2744 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2745 h264_decoder_suggest="error_resilience"
2746 hap_decoder_select="snappy texturedsp"
2747 hap_encoder_deps="libsnappy"
2748 hap_encoder_select="texturedspenc"
2749 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2750 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2751 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2752 hymt_decoder_select="huffyuv_decoder"
2753 iac_decoder_select="imc_decoder"
2754 imc_decoder_select="bswapdsp fft mdct sinewin"
2755 imm4_decoder_select="bswapdsp"
2756 imm5_decoder_select="h264_decoder hevc_decoder"
2757 indeo3_decoder_select="hpeldsp"
2758 indeo4_decoder_select="ividsp"
2759 indeo5_decoder_select="ividsp"
2760 interplay_video_decoder_select="hpeldsp"
2761 jpegls_decoder_select="mjpeg_decoder"
2762 jv_decoder_select="blockdsp"
2763 lagarith_decoder_select="llviddsp"
2764 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2765 lscr_decoder_deps="zlib"
2766 magicyuv_decoder_select="llviddsp"
2767 magicyuv_encoder_select="llvidencdsp"
2768 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2769 metasound_decoder_select="lsp mdct sinewin"
2770 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2771 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2772 mjpeg_encoder_select="jpegtables mpegvideoenc"
2773 mjpegb_decoder_select="mjpeg_decoder"
2774 mlp_decoder_select="mlp_parser"
2775 mlp_encoder_select="lpc audio_frame_queue"
2776 mobiclip_decoder_select="bswapdsp golomb"
2777 motionpixels_decoder_select="bswapdsp"
2778 mp1_decoder_select="mpegaudio"
2779 mp1float_decoder_select="mpegaudio"
2780 mp2_decoder_select="mpegaudio"
2781 mp2float_decoder_select="mpegaudio"
2782 mp3_decoder_select="mpegaudio"
2783 mp3adu_decoder_select="mpegaudio"
2784 mp3adufloat_decoder_select="mpegaudio"
2785 mp3float_decoder_select="mpegaudio"
2786 mp3on4_decoder_select="mpegaudio"
2787 mp3on4float_decoder_select="mpegaudio"
2788 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2789 mpc8_decoder_select="mpegaudiodsp"
2790 mpegvideo_decoder_select="mpegvideo"
2791 mpeg1video_decoder_select="mpegvideo"
2792 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2793 mpeg2video_decoder_select="mpegvideo"
2794 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2795 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2796 mpeg4_encoder_select="h263_encoder"
2797 msa1_decoder_select="mss34dsp"
2798 mscc_decoder_deps="zlib"
2799 msmpeg4v1_decoder_select="h263_decoder"
2800 msmpeg4v2_decoder_select="h263_decoder"
2801 msmpeg4v2_encoder_select="h263_encoder"
2802 msmpeg4v3_decoder_select="h263_decoder"
2803 msmpeg4v3_encoder_select="h263_encoder"
2804 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2805 mts2_decoder_select="jpegtables mss34dsp"
2806 mv30_decoder_select="aandcttables blockdsp"
2807 mvha_decoder_deps="zlib"
2808 mvha_decoder_select="llviddsp"
2809 mwsc_decoder_deps="zlib"
2810 mxpeg_decoder_select="mjpeg_decoder"
2811 nellymoser_decoder_select="mdct sinewin"
2812 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2813 notchlc_decoder_select="lzf"
2814 nuv_decoder_select="idctdsp lzo"
2815 on2avc_decoder_select="mdct"
2816 opus_decoder_deps="swresample"
2817 opus_decoder_select="mdct15"
2818 opus_encoder_select="audio_frame_queue mdct15"
2819 png_decoder_deps="zlib"
2820 png_encoder_deps="zlib"
2821 png_encoder_select="llvidencdsp"
2822 prores_decoder_select="blockdsp idctdsp"
2823 prores_encoder_select="fdctdsp"
2824 qcelp_decoder_select="lsp"
2825 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2826 ra_144_decoder_select="audiodsp"
2827 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2828 ralf_decoder_select="golomb"
2829 rasc_decoder_deps="zlib"
2830 rawvideo_decoder_select="bswapdsp"
2831 rscc_decoder_deps="zlib"
2832 rtjpeg_decoder_select="me_cmp"
2833 rv10_decoder_select="h263_decoder"
2834 rv10_encoder_select="h263_encoder"
2835 rv20_decoder_select="h263_decoder"
2836 rv20_encoder_select="h263_encoder"
2837 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2838 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2839 screenpresso_decoder_deps="zlib"
2840 shorten_decoder_select="bswapdsp"
2841 sipr_decoder_select="lsp"
2842 smvjpeg_decoder_select="mjpeg_decoder"
2843 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2844 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2845 sonic_decoder_select="golomb rangecoder"
2846 sonic_encoder_select="golomb rangecoder"
2847 sonic_ls_encoder_select="golomb rangecoder"
2848 sp5x_decoder_select="mjpeg_decoder"
2849 speedhq_decoder_select="mpegvideo"
2850 srgc_decoder_deps="zlib"
2851 svq1_decoder_select="hpeldsp"
2852 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2853 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2854 svq3_decoder_suggest="zlib"
2855 tak_decoder_select="audiodsp"
2856 tdsc_decoder_deps="zlib"
2857 tdsc_decoder_select="mjpeg_decoder"
2858 theora_decoder_select="vp3_decoder"
2859 thp_decoder_select="mjpeg_decoder"
2860 tiff_decoder_select="mjpeg_decoder"
2861 tiff_decoder_suggest="zlib lzma"
2862 tiff_encoder_suggest="zlib"
2863 truehd_decoder_select="mlp_parser"
2864 truehd_encoder_select="lpc audio_frame_queue"
2865 truemotion2_decoder_select="bswapdsp"
2866 truespeech_decoder_select="bswapdsp"
2867 tscc_decoder_deps="zlib"
2868 twinvq_decoder_select="mdct lsp sinewin"
2869 txd_decoder_select="texturedsp"
2870 utvideo_decoder_select="bswapdsp llviddsp"
2871 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2872 vble_decoder_select="llviddsp"
2873 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2874 vc1image_decoder_select="vc1_decoder"
2875 vorbis_decoder_select="mdct"
2876 vorbis_encoder_select="audio_frame_queue mdct"
2877 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2878 vp4_decoder_select="vp3_decoder"
2879 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2880 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2881 vp6a_decoder_select="vp6_decoder"
2882 vp6f_decoder_select="vp6_decoder"
2883 vp7_decoder_select="h264pred videodsp vp8dsp"
2884 vp8_decoder_select="h264pred videodsp vp8dsp"
2885 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2886 wcmv_decoder_deps="zlib"
2887 webp_decoder_select="vp8_decoder exif"
2888 wmalossless_decoder_select="llauddsp"
2889 wmapro_decoder_select="mdct sinewin wma_freqs"
2890 wmav1_decoder_select="mdct sinewin wma_freqs"
2891 wmav1_encoder_select="mdct sinewin wma_freqs"
2892 wmav2_decoder_select="mdct sinewin wma_freqs"
2893 wmav2_encoder_select="mdct sinewin wma_freqs"
2894 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2895 wmv1_decoder_select="h263_decoder"
2896 wmv1_encoder_select="h263_encoder"
2897 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2898 wmv2_encoder_select="h263_encoder wmv2dsp"
2899 wmv3_decoder_select="vc1_decoder"
2900 wmv3image_decoder_select="wmv3_decoder"
2901 xma1_decoder_select="wmapro_decoder"
2902 xma2_decoder_select="wmapro_decoder"
2903 ylc_decoder_select="bswapdsp"
2904 zerocodec_decoder_deps="zlib"
2905 zlib_decoder_deps="zlib"
2906 zlib_encoder_deps="zlib"
2907 zmbv_decoder_deps="zlib"
2908 zmbv_encoder_deps="zlib"
2909
2910 # hardware accelerators
2911 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2912 cuda_deps="ffnvcodec"
2913 cuvid_deps="ffnvcodec"
2914 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2915 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2916 ffnvcodec_deps_any="libdl LoadLibrary"
2917 nvdec_deps="ffnvcodec"
2918 vaapi_x11_deps="xlib"
2919 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2920 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2921 xvmc_deps="X11_extensions_XvMClib_h"
2922
2923 av1_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2924 av1_d3d11va_hwaccel_select="av1_decoder"
2925 av1_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_AV1"
2926 av1_d3d11va2_hwaccel_select="av1_decoder"
2927 av1_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_AV1"
2928 av1_dxva2_hwaccel_select="av1_decoder"
2929 av1_nvdec_hwaccel_deps="nvdec CUVIDAV1PICPARAMS"
2930 av1_nvdec_hwaccel_select="av1_decoder"
2931 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2932 av1_vaapi_hwaccel_select="av1_decoder"
2933 h263_vaapi_hwaccel_deps="vaapi"
2934 h263_vaapi_hwaccel_select="h263_decoder"
2935 h263_videotoolbox_hwaccel_deps="videotoolbox"
2936 h263_videotoolbox_hwaccel_select="h263_decoder"
2937 h264_d3d11va_hwaccel_deps="d3d11va"
2938 h264_d3d11va_hwaccel_select="h264_decoder"
2939 h264_d3d11va2_hwaccel_deps="d3d11va"
2940 h264_d3d11va2_hwaccel_select="h264_decoder"
2941 h264_dxva2_hwaccel_deps="dxva2"
2942 h264_dxva2_hwaccel_select="h264_decoder"
2943 h264_nvdec_hwaccel_deps="nvdec"
2944 h264_nvdec_hwaccel_select="h264_decoder"
2945 h264_vaapi_hwaccel_deps="vaapi"
2946 h264_vaapi_hwaccel_select="h264_decoder"
2947 h264_vdpau_hwaccel_deps="vdpau"
2948 h264_vdpau_hwaccel_select="h264_decoder"
2949 h264_videotoolbox_hwaccel_deps="videotoolbox"
2950 h264_videotoolbox_hwaccel_select="h264_decoder"
2951 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2952 hevc_d3d11va_hwaccel_select="hevc_decoder"
2953 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2954 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2955 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2956 hevc_dxva2_hwaccel_select="hevc_decoder"
2957 hevc_nvdec_hwaccel_deps="nvdec"
2958 hevc_nvdec_hwaccel_select="hevc_decoder"
2959 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2960 hevc_vaapi_hwaccel_select="hevc_decoder"
2961 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2962 hevc_vdpau_hwaccel_select="hevc_decoder"
2963 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2964 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2965 mjpeg_nvdec_hwaccel_deps="nvdec"
2966 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2967 mjpeg_vaapi_hwaccel_deps="vaapi"
2968 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2969 mpeg_xvmc_hwaccel_deps="xvmc"
2970 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2971 mpeg1_nvdec_hwaccel_deps="nvdec"
2972 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2973 mpeg1_vdpau_hwaccel_deps="vdpau"
2974 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2975 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2976 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2977 mpeg1_xvmc_hwaccel_deps="xvmc"
2978 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2979 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2980 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2981 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2982 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2983 mpeg2_dxva2_hwaccel_deps="dxva2"
2984 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2985 mpeg2_nvdec_hwaccel_deps="nvdec"
2986 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2987 mpeg2_vaapi_hwaccel_deps="vaapi"
2988 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2989 mpeg2_vdpau_hwaccel_deps="vdpau"
2990 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2991 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2992 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2993 mpeg2_xvmc_hwaccel_deps="xvmc"
2994 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2995 mpeg4_nvdec_hwaccel_deps="nvdec"
2996 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2997 mpeg4_vaapi_hwaccel_deps="vaapi"
2998 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2999 mpeg4_vdpau_hwaccel_deps="vdpau"
3000 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
3001 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
3002 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
3003 vc1_d3d11va_hwaccel_deps="d3d11va"
3004 vc1_d3d11va_hwaccel_select="vc1_decoder"
3005 vc1_d3d11va2_hwaccel_deps="d3d11va"
3006 vc1_d3d11va2_hwaccel_select="vc1_decoder"
3007 vc1_dxva2_hwaccel_deps="dxva2"
3008 vc1_dxva2_hwaccel_select="vc1_decoder"
3009 vc1_nvdec_hwaccel_deps="nvdec"
3010 vc1_nvdec_hwaccel_select="vc1_decoder"
3011 vc1_vaapi_hwaccel_deps="vaapi"
3012 vc1_vaapi_hwaccel_select="vc1_decoder"
3013 vc1_vdpau_hwaccel_deps="vdpau"
3014 vc1_vdpau_hwaccel_select="vc1_decoder"
3015 vp8_nvdec_hwaccel_deps="nvdec"
3016 vp8_nvdec_hwaccel_select="vp8_decoder"
3017 vp8_vaapi_hwaccel_deps="vaapi"
3018 vp8_vaapi_hwaccel_select="vp8_decoder"
3019 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3020 vp9_d3d11va_hwaccel_select="vp9_decoder"
3021 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3022 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3023 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3024 vp9_dxva2_hwaccel_select="vp9_decoder"
3025 vp9_nvdec_hwaccel_deps="nvdec"
3026 vp9_nvdec_hwaccel_select="vp9_decoder"
3027 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3028 vp9_vaapi_hwaccel_select="vp9_decoder"
3029 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3030 vp9_vdpau_hwaccel_select="vp9_decoder"
3031 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3032 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3033 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3034 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3035 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3036 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3037
3038 # hardware-accelerated codecs
3039 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3040 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3041 omx_deps="libdl pthreads"
3042 omx_rpi_select="omx"
3043 qsv_deps="libmfx"
3044 qsvdec_select="qsv"
3045 qsvenc_select="qsv"
3046 qsvvpp_select="qsv"
3047 vaapi_encode_deps="vaapi"
3048 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3049
3050 hwupload_cuda_filter_deps="ffnvcodec"
3051 scale_npp_filter_deps="ffnvcodec libnpp"
3052 scale_cuda_filter_deps="ffnvcodec"
3053 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3054 thumbnail_cuda_filter_deps="ffnvcodec"
3055 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3056 transpose_npp_filter_deps="ffnvcodec libnpp"
3057 overlay_cuda_filter_deps="ffnvcodec"
3058 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3059
3060 amf_deps_any="libdl LoadLibrary"
3061 nvenc_deps="ffnvcodec"
3062 nvenc_deps_any="libdl LoadLibrary"
3063 nvenc_encoder_deps="nvenc"
3064
3065 aac_mf_encoder_deps="mediafoundation"
3066 ac3_mf_encoder_deps="mediafoundation"
3067 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3068 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3069 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3070 h264_amf_encoder_deps="amf"
3071 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3072 h264_cuvid_decoder_deps="cuvid"
3073 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3074 h264_mediacodec_decoder_deps="mediacodec"
3075 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3076 h264_mf_encoder_deps="mediafoundation"
3077 h264_mmal_decoder_deps="mmal"
3078 h264_nvenc_encoder_deps="nvenc"
3079 h264_nvenc_encoder_select="atsc_a53"
3080 h264_omx_encoder_deps="omx"
3081 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3082 h264_qsv_encoder_select="atsc_a53 qsvenc"
3083 h264_rkmpp_decoder_deps="rkmpp"
3084 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3085 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3086 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3087 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3088 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3089 hevc_amf_encoder_deps="amf"
3090 hevc_cuvid_decoder_deps="cuvid"
3091 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3092 hevc_mediacodec_decoder_deps="mediacodec"
3093 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3094 hevc_mf_encoder_deps="mediafoundation"
3095 hevc_nvenc_encoder_deps="nvenc"
3096 hevc_nvenc_encoder_select="atsc_a53"
3097 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3098 hevc_qsv_encoder_select="hevcparse qsvenc"
3099 hevc_rkmpp_decoder_deps="rkmpp"
3100 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3101 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3102 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3103 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3104 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3105 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3106 mjpeg_cuvid_decoder_deps="cuvid"
3107 mjpeg_qsv_decoder_select="qsvdec"
3108 mjpeg_qsv_encoder_deps="libmfx"
3109 mjpeg_qsv_encoder_select="qsvenc"
3110 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3111 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3112 mp3_mf_encoder_deps="mediafoundation"
3113 mpeg1_cuvid_decoder_deps="cuvid"
3114 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3115 mpeg2_crystalhd_decoder_select="crystalhd"
3116 mpeg2_cuvid_decoder_deps="cuvid"
3117 mpeg2_mmal_decoder_deps="mmal"
3118 mpeg2_mediacodec_decoder_deps="mediacodec"
3119 mpeg2_qsv_decoder_select="qsvdec"
3120 mpeg2_qsv_encoder_select="qsvenc"
3121 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3122 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3123 mpeg4_crystalhd_decoder_select="crystalhd"
3124 mpeg4_cuvid_decoder_deps="cuvid"
3125 mpeg4_mediacodec_decoder_deps="mediacodec"
3126 mpeg4_mmal_decoder_deps="mmal"
3127 mpeg4_omx_encoder_deps="omx"
3128 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3129 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3130 msmpeg4_crystalhd_decoder_select="crystalhd"
3131 nvenc_h264_encoder_select="h264_nvenc_encoder"
3132 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3133 vc1_crystalhd_decoder_select="crystalhd"
3134 vc1_cuvid_decoder_deps="cuvid"
3135 vc1_mmal_decoder_deps="mmal"
3136 vc1_qsv_decoder_select="qsvdec"
3137 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3138 vp8_cuvid_decoder_deps="cuvid"
3139 vp8_mediacodec_decoder_deps="mediacodec"
3140 vp8_qsv_decoder_select="qsvdec"
3141 vp8_rkmpp_decoder_deps="rkmpp"
3142 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3143 vp8_vaapi_encoder_select="vaapi_encode"
3144 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3145 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3146 vp9_cuvid_decoder_deps="cuvid"
3147 vp9_mediacodec_decoder_deps="mediacodec"
3148 vp9_qsv_decoder_select="qsvdec"
3149 vp9_rkmpp_decoder_deps="rkmpp"
3150 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3151 vp9_vaapi_encoder_select="vaapi_encode"
3152 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3153 vp9_qsv_encoder_select="qsvenc"
3154 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3155 wmv3_crystalhd_decoder_select="crystalhd"
3156 av1_qsv_decoder_select="qsvdec"
3157
3158 # parsers
3159 aac_parser_select="adts_header"
3160 av1_parser_select="cbs_av1"
3161 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3162 hevc_parser_select="hevcparse"
3163 mpegaudio_parser_select="mpegaudioheader"
3164 mpegvideo_parser_select="mpegvideo"
3165 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3166 vc1_parser_select="vc1dsp"
3167
3168 # bitstream_filters
3169 aac_adtstoasc_bsf_select="adts_header"
3170 av1_frame_merge_bsf_select="cbs_av1"
3171 av1_frame_split_bsf_select="cbs_av1"
3172 av1_metadata_bsf_select="cbs_av1"
3173 eac3_core_bsf_select="ac3_parser"
3174 filter_units_bsf_select="cbs"
3175 h264_metadata_bsf_deps="const_nan"
3176 h264_metadata_bsf_select="cbs_h264"
3177 h264_redundant_pps_bsf_select="cbs_h264"
3178 hevc_metadata_bsf_select="cbs_h265"
3179 mjpeg2jpeg_bsf_select="jpegtables"
3180 mpeg2_metadata_bsf_select="cbs_mpeg2"
3181 trace_headers_bsf_select="cbs"
3182 vp9_metadata_bsf_select="cbs_vp9"
3183
3184 # external libraries
3185 aac_at_decoder_deps="audiotoolbox"
3186 aac_at_decoder_select="aac_adtstoasc_bsf"
3187 ac3_at_decoder_deps="audiotoolbox"
3188 ac3_at_decoder_select="ac3_parser"
3189 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3190 alac_at_decoder_deps="audiotoolbox"
3191 amr_nb_at_decoder_deps="audiotoolbox"
3192 avisynth_deps_any="libdl LoadLibrary"
3193 avisynth_demuxer_deps="avisynth"
3194 avisynth_demuxer_select="riffdec"
3195 eac3_at_decoder_deps="audiotoolbox"
3196 eac3_at_decoder_select="ac3_parser"
3197 gsm_ms_at_decoder_deps="audiotoolbox"
3198 ilbc_at_decoder_deps="audiotoolbox"
3199 mp1_at_decoder_deps="audiotoolbox"
3200 mp2_at_decoder_deps="audiotoolbox"
3201 mp3_at_decoder_deps="audiotoolbox"
3202 mp1_at_decoder_select="mpegaudioheader"
3203 mp2_at_decoder_select="mpegaudioheader"
3204 mp3_at_decoder_select="mpegaudioheader"
3205 pcm_alaw_at_decoder_deps="audiotoolbox"
3206 pcm_mulaw_at_decoder_deps="audiotoolbox"
3207 qdmc_decoder_select="fft"
3208 qdmc_at_decoder_deps="audiotoolbox"
3209 qdm2_at_decoder_deps="audiotoolbox"
3210 aac_at_encoder_deps="audiotoolbox"
3211 aac_at_encoder_select="audio_frame_queue"
3212 alac_at_encoder_deps="audiotoolbox"
3213 alac_at_encoder_select="audio_frame_queue"
3214 ilbc_at_encoder_deps="audiotoolbox"
3215 ilbc_at_encoder_select="audio_frame_queue"
3216 pcm_alaw_at_encoder_deps="audiotoolbox"
3217 pcm_alaw_at_encoder_select="audio_frame_queue"
3218 pcm_mulaw_at_encoder_deps="audiotoolbox"
3219 pcm_mulaw_at_encoder_select="audio_frame_queue"
3220 chromaprint_muxer_deps="chromaprint"
3221 h264_videotoolbox_encoder_deps="pthreads"
3222 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3223 hevc_videotoolbox_encoder_deps="pthreads"
3224 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3225 libaom_av1_decoder_deps="libaom"
3226 libaom_av1_encoder_deps="libaom"
3227 libaom_av1_encoder_select="extract_extradata_bsf"
3228 libaribb24_decoder_deps="libaribb24"
3229 libcelt_decoder_deps="libcelt"
3230 libcodec2_decoder_deps="libcodec2"
3231 libcodec2_encoder_deps="libcodec2"
3232 libdav1d_decoder_deps="libdav1d"
3233 libdav1d_decoder_select="atsc_a53"
3234 libdavs2_decoder_deps="libdavs2"
3235 libfdk_aac_decoder_deps="libfdk_aac"
3236 libfdk_aac_encoder_deps="libfdk_aac"
3237 libfdk_aac_encoder_select="audio_frame_queue"
3238 libgme_demuxer_deps="libgme"
3239 libgsm_decoder_deps="libgsm"
3240 libgsm_encoder_deps="libgsm"
3241 libgsm_ms_decoder_deps="libgsm"
3242 libgsm_ms_encoder_deps="libgsm"
3243 libilbc_decoder_deps="libilbc"
3244 libilbc_encoder_deps="libilbc"
3245 libkvazaar_encoder_deps="libkvazaar"
3246 libmodplug_demuxer_deps="libmodplug"
3247 libmp3lame_encoder_deps="libmp3lame"
3248 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3249 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3250 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3251 libopencore_amrnb_encoder_select="audio_frame_queue"
3252 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3253 libopenh264_decoder_deps="libopenh264"
3254 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3255 libopenh264_encoder_deps="libopenh264"
3256 libopenjpeg_decoder_deps="libopenjpeg"
3257 libopenjpeg_encoder_deps="libopenjpeg"
3258 libopenmpt_demuxer_deps="libopenmpt"
3259 libopus_decoder_deps="libopus"
3260 libopus_encoder_deps="libopus"
3261 libopus_encoder_select="audio_frame_queue"
3262 librav1e_encoder_deps="librav1e"
3263 librav1e_encoder_select="extract_extradata_bsf"
3264 librsvg_decoder_deps="librsvg"
3265 libshine_encoder_deps="libshine"
3266 libshine_encoder_select="audio_frame_queue"
3267 libspeex_decoder_deps="libspeex"
3268 libspeex_encoder_deps="libspeex"
3269 libspeex_encoder_select="audio_frame_queue"
3270 libsvtav1_encoder_deps="libsvtav1"
3271 libtheora_encoder_deps="libtheora"
3272 libtwolame_encoder_deps="libtwolame"
3273 libuavs3d_decoder_deps="libuavs3d"
3274 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3275 libvorbis_decoder_deps="libvorbis"
3276 libvorbis_encoder_deps="libvorbis libvorbisenc"
3277 libvorbis_encoder_select="audio_frame_queue"
3278 libvpx_vp8_decoder_deps="libvpx"
3279 libvpx_vp8_encoder_deps="libvpx"
3280 libvpx_vp9_decoder_deps="libvpx"
3281 libvpx_vp9_encoder_deps="libvpx"
3282 libwebp_encoder_deps="libwebp"
3283 libwebp_anim_encoder_deps="libwebp"
3284 libx262_encoder_deps="libx262"
3285 libx264_encoder_deps="libx264"
3286 libx264_encoder_select="atsc_a53"
3287 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3288 libx264rgb_encoder_select="libx264_encoder"
3289 libx265_encoder_deps="libx265"
3290 libxavs_encoder_deps="libxavs"
3291 libxavs2_encoder_deps="libxavs2"
3292 libxvid_encoder_deps="libxvid"
3293 libzvbi_teletext_decoder_deps="libzvbi"
3294 vapoursynth_demuxer_deps="vapoursynth"
3295 videotoolbox_suggest="coreservices"
3296 videotoolbox_deps="corefoundation coremedia corevideo"
3297 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3298
3299 # demuxers / muxers
3300 ac3_demuxer_select="ac3_parser"
3301 act_demuxer_select="riffdec"
3302 aiff_muxer_select="iso_media"
3303 asf_demuxer_select="riffdec"
3304 asf_o_demuxer_select="riffdec"
3305 asf_muxer_select="riffenc"
3306 asf_stream_muxer_select="asf_muxer"
3307 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3308 avi_demuxer_select="iso_media riffdec exif"
3309 avi_muxer_select="riffenc"
3310 caf_demuxer_select="iso_media riffdec"
3311 caf_muxer_select="iso_media"
3312 dash_muxer_select="mp4_muxer"
3313 dash_demuxer_deps="libxml2"
3314 dirac_demuxer_select="dirac_parser"
3315 dts_demuxer_select="dca_parser"
3316 dtshd_demuxer_select="dca_parser"
3317 dv_demuxer_select="dvprofile"
3318 dv_muxer_select="dvprofile"
3319 dxa_demuxer_select="riffdec"
3320 eac3_demuxer_select="ac3_parser"
3321 f4v_muxer_select="mov_muxer"
3322 fifo_muxer_deps="threads"
3323 flac_demuxer_select="flac_parser"
3324 flv_muxer_select="aac_adtstoasc_bsf"
3325 gxf_muxer_select="pcm_rechunk_bsf"
3326 hds_muxer_select="flv_muxer"
3327 hls_muxer_select="mpegts_muxer"
3328 hls_muxer_suggest="gcrypt openssl"
3329 image2_alias_pix_demuxer_select="image2_demuxer"
3330 image2_brender_pix_demuxer_select="image2_demuxer"
3331 ipod_muxer_select="mov_muxer"
3332 ismv_muxer_select="mov_muxer"
3333 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3334 latm_muxer_select="aac_adtstoasc_bsf"
3335 matroska_audio_muxer_select="matroska_muxer"
3336 matroska_demuxer_select="iso_media riffdec"
3337 matroska_demuxer_suggest="bzlib lzo zlib"
3338 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3339 mlp_demuxer_select="mlp_parser"
3340 mmf_muxer_select="riffenc"
3341 mov_demuxer_select="iso_media riffdec"
3342 mov_demuxer_suggest="zlib"
3343 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3344 mp3_demuxer_select="mpegaudio_parser"
3345 mp3_muxer_select="mpegaudioheader"
3346 mp4_muxer_select="mov_muxer"
3347 mpegts_demuxer_select="iso_media"
3348 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3349 mpegtsraw_demuxer_select="mpegts_demuxer"
3350 mxf_muxer_select="golomb pcm_rechunk_bsf"
3351 mxf_d10_muxer_select="mxf_muxer"
3352 mxf_opatom_muxer_select="mxf_muxer"
3353 nut_muxer_select="riffenc"
3354 nuv_demuxer_select="riffdec"
3355 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3356 oga_muxer_select="ogg_muxer"
3357 ogg_demuxer_select="dirac_parse"
3358 ogv_muxer_select="ogg_muxer"
3359 opus_muxer_select="ogg_muxer"
3360 psp_muxer_select="mov_muxer"
3361 rtp_demuxer_select="sdp_demuxer"
3362 rtp_muxer_select="golomb jpegtables"
3363 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3364 rtsp_demuxer_select="http_protocol rtpdec"
3365 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3366 sap_demuxer_select="sdp_demuxer"
3367 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3368 sdp_demuxer_select="rtpdec"
3369 smoothstreaming_muxer_select="ismv_muxer"
3370 spdif_demuxer_select="adts_header"
3371 spdif_muxer_select="adts_header"
3372 spx_muxer_select="ogg_muxer"
3373 swf_demuxer_suggest="zlib"
3374 tak_demuxer_select="tak_parser"
3375 truehd_demuxer_select="mlp_parser"
3376 tg2_muxer_select="mov_muxer"
3377 tgp_muxer_select="mov_muxer"
3378 vobsub_demuxer_select="mpegps_demuxer"
3379 w64_demuxer_select="wav_demuxer"
3380 w64_muxer_select="wav_muxer"
3381 wav_demuxer_select="riffdec"
3382 wav_muxer_select="riffenc"
3383 webm_chunk_muxer_select="webm_muxer"
3384 webm_muxer_select="iso_media riffenc"
3385 webm_dash_manifest_demuxer_select="matroska_demuxer"
3386 wtv_demuxer_select="mpegts_demuxer riffdec"
3387 wtv_muxer_select="mpegts_muxer riffenc"
3388 xmv_demuxer_select="riffdec"
3389 xwma_demuxer_select="riffdec"
3390
3391 # indevs / outdevs
3392 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3393 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3394 alsa_indev_deps="alsa"
3395 alsa_outdev_deps="alsa"
3396 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3397 avfoundation_indev_suggest="coregraphics applicationservices"
3398 avfoundation_indev_extralibs="-framework Foundation"
3399 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3400 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3401 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3402 caca_outdev_deps="libcaca"
3403 decklink_deps_any="libdl LoadLibrary"
3404 decklink_indev_deps="decklink threads"
3405 decklink_indev_extralibs="-lstdc++"
3406 decklink_outdev_deps="decklink threads"
3407 decklink_outdev_suggest="libklvanc"
3408 decklink_outdev_extralibs="-lstdc++"
3409 dshow_indev_deps="IBaseFilter"
3410 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3411 fbdev_indev_deps="linux_fb_h"
3412 fbdev_outdev_deps="linux_fb_h"
3413 gdigrab_indev_deps="CreateDIBSection"
3414 gdigrab_indev_extralibs="-lgdi32"
3415 gdigrab_indev_select="bmp_decoder"
3416 iec61883_indev_deps="libiec61883"
3417 jack_indev_deps="libjack"
3418 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3419 kmsgrab_indev_deps="libdrm"
3420 lavfi_indev_deps="avfilter"
3421 libcdio_indev_deps="libcdio"
3422 libdc1394_indev_deps="libdc1394"
3423 openal_indev_deps="openal"
3424 opengl_outdev_deps="opengl"
3425 opengl_outdev_suggest="sdl2"
3426 oss_indev_deps_any="sys_soundcard_h"
3427 oss_outdev_deps_any="sys_soundcard_h"
3428 pulse_indev_deps="libpulse"
3429 pulse_outdev_deps="libpulse"
3430 sdl2_outdev_deps="sdl2"
3431 sndio_indev_deps="sndio"
3432 sndio_outdev_deps="sndio"
3433 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3434 v4l2_indev_suggest="libv4l2"
3435 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3436 v4l2_outdev_suggest="libv4l2"
3437 vfwcap_indev_deps="vfw32 vfwcap_defines"
3438 xcbgrab_indev_deps="libxcb"
3439 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3440 xv_outdev_deps="xlib"
3441
3442 # protocols
3443 async_protocol_deps="threads"
3444 bluray_protocol_deps="libbluray"
3445 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3446 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3447 ffrtmpcrypt_protocol_select="tcp_protocol"
3448 ffrtmphttp_protocol_conflict="librtmp_protocol"
3449 ffrtmphttp_protocol_select="http_protocol"
3450 ftp_protocol_select="tcp_protocol"
3451 gopher_protocol_select="network"
3452 http_protocol_select="tcp_protocol"
3453 http_protocol_suggest="zlib"
3454 httpproxy_protocol_select="tcp_protocol"
3455 httpproxy_protocol_suggest="zlib"
3456 https_protocol_select="tls_protocol"
3457 https_protocol_suggest="zlib"
3458 icecast_protocol_select="http_protocol"
3459 mmsh_protocol_select="http_protocol"
3460 mmst_protocol_select="network"
3461 rtmp_protocol_conflict="librtmp_protocol"
3462 rtmp_protocol_select="tcp_protocol"
3463 rtmp_protocol_suggest="zlib"
3464 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3465 rtmpe_protocol_suggest="zlib"
3466 rtmps_protocol_conflict="librtmp_protocol"
3467 rtmps_protocol_select="tls_protocol"
3468 rtmps_protocol_suggest="zlib"
3469 rtmpt_protocol_select="ffrtmphttp_protocol"
3470 rtmpt_protocol_suggest="zlib"
3471 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3472 rtmpte_protocol_suggest="zlib"
3473 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3474 rtmpts_protocol_suggest="zlib"
3475 rtp_protocol_select="udp_protocol"
3476 schannel_conflict="openssl gnutls libtls mbedtls"
3477 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3478 sctp_protocol_select="network"
3479 securetransport_conflict="openssl gnutls libtls mbedtls"
3480 srtp_protocol_select="rtp_protocol srtp"
3481 tcp_protocol_select="network"
3482 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3483 tls_protocol_select="tcp_protocol"
3484 udp_protocol_select="network"
3485 udplite_protocol_select="network"
3486 unix_protocol_deps="sys_un_h"
3487 unix_protocol_select="network"
3488
3489 # external library protocols
3490 libamqp_protocol_deps="librabbitmq"
3491 libamqp_protocol_select="network"
3492 librtmp_protocol_deps="librtmp"
3493 librtmpe_protocol_deps="librtmp"
3494 librtmps_protocol_deps="librtmp"
3495 librtmpt_protocol_deps="librtmp"
3496 librtmpte_protocol_deps="librtmp"
3497 libsmbclient_protocol_deps="libsmbclient gplv3"
3498 libsrt_protocol_deps="libsrt"
3499 libsrt_protocol_select="network"
3500 libssh_protocol_deps="libssh"
3501 libtls_conflict="openssl gnutls mbedtls"
3502 libzmq_protocol_deps="libzmq"
3503 libzmq_protocol_select="network"
3504
3505 # filters
3506 afftdn_filter_deps="avcodec"
3507 afftdn_filter_select="fft"
3508 afftfilt_filter_deps="avcodec"
3509 afftfilt_filter_select="fft"
3510 afir_filter_deps="avcodec"
3511 afir_filter_select="rdft"
3512 amovie_filter_deps="avcodec avformat"
3513 aresample_filter_deps="swresample"
3514 asoftclip_filter_deps="swresample"
3515 asr_filter_deps="pocketsphinx"
3516 ass_filter_deps="libass"
3517 atempo_filter_deps="avcodec"
3518 atempo_filter_select="rdft"
3519 avgblur_opencl_filter_deps="opencl"
3520 avgblur_vulkan_filter_deps="vulkan libglslang"
3521 azmq_filter_deps="libzmq"
3522 blackframe_filter_deps="gpl"
3523 bm3d_filter_deps="avcodec"
3524 bm3d_filter_select="dct"
3525 boxblur_filter_deps="gpl"
3526 boxblur_opencl_filter_deps="opencl gpl"
3527 bs2b_filter_deps="libbs2b"
3528 chromaber_vulkan_filter_deps="vulkan libglslang"
3529 colorkey_opencl_filter_deps="opencl"
3530 colormatrix_filter_deps="gpl"
3531 convolution_opencl_filter_deps="opencl"
3532 convolve_filter_deps="avcodec"
3533 convolve_filter_select="fft"
3534 coreimage_filter_deps="coreimage appkit"
3535 coreimage_filter_extralibs="-framework OpenGL"
3536 coreimagesrc_filter_deps="coreimage appkit"
3537 coreimagesrc_filter_extralibs="-framework OpenGL"
3538 cover_rect_filter_deps="avcodec avformat gpl"
3539 cropdetect_filter_deps="gpl"
3540 deconvolve_filter_deps="avcodec"
3541 deconvolve_filter_select="fft"
3542 deinterlace_qsv_filter_deps="libmfx"
3543 deinterlace_vaapi_filter_deps="vaapi"
3544 delogo_filter_deps="gpl"
3545 denoise_vaapi_filter_deps="vaapi"
3546 derain_filter_select="dnn"
3547 deshake_filter_select="pixelutils"
3548 deshake_opencl_filter_deps="opencl"
3549 dilation_opencl_filter_deps="opencl"
3550 dnn_processing_filter_select="dnn"
3551 drawtext_filter_deps="libfreetype"
3552 drawtext_filter_suggest="libfontconfig libfribidi"
3553 elbg_filter_deps="avcodec"
3554 eq_filter_deps="gpl"
3555 erosion_opencl_filter_deps="opencl"
3556 fftfilt_filter_deps="avcodec"
3557 fftfilt_filter_select="rdft"
3558 fftdnoiz_filter_deps="avcodec"
3559 fftdnoiz_filter_select="fft"
3560 find_rect_filter_deps="avcodec avformat gpl"
3561 firequalizer_filter_deps="avcodec"
3562 firequalizer_filter_select="rdft"
3563 flite_filter_deps="libflite"
3564 framerate_filter_select="scene_sad"
3565 freezedetect_filter_select="scene_sad"
3566 frei0r_filter_deps="frei0r libdl"
3567 frei0r_src_filter_deps="frei0r libdl"
3568 fspp_filter_deps="gpl"
3569 headphone_filter_select="fft"
3570 histeq_filter_deps="gpl"
3571 hqdn3d_filter_deps="gpl"
3572 interlace_filter_deps="gpl"
3573 kerndeint_filter_deps="gpl"
3574 ladspa_filter_deps="ladspa libdl"
3575 lensfun_filter_deps="liblensfun version3"
3576 lv2_filter_deps="lv2"
3577 mcdeint_filter_deps="avcodec gpl"
3578 movie_filter_deps="avcodec avformat"
3579 mpdecimate_filter_deps="gpl"
3580 mpdecimate_filter_select="pixelutils"
3581 minterpolate_filter_select="scene_sad"
3582 mptestsrc_filter_deps="gpl"
3583 negate_filter_deps="lut_filter"
3584 nlmeans_opencl_filter_deps="opencl"
3585 nnedi_filter_deps="gpl"
3586 ocr_filter_deps="libtesseract"
3587 ocv_filter_deps="libopencv"
3588 openclsrc_filter_deps="opencl"
3589 overlay_opencl_filter_deps="opencl"
3590 overlay_qsv_filter_deps="libmfx"
3591 overlay_qsv_filter_select="qsvvpp"
3592 overlay_vulkan_filter_deps="vulkan libglslang"
3593 owdenoise_filter_deps="gpl"
3594 pad_opencl_filter_deps="opencl"
3595 pan_filter_deps="swresample"
3596 perspective_filter_deps="gpl"
3597 phase_filter_deps="gpl"
3598 pp7_filter_deps="gpl"
3599 pp_filter_deps="gpl postproc"
3600 prewitt_opencl_filter_deps="opencl"
3601 procamp_vaapi_filter_deps="vaapi"
3602 program_opencl_filter_deps="opencl"
3603 pullup_filter_deps="gpl"
3604 removelogo_filter_deps="avcodec avformat swscale"
3605 repeatfields_filter_deps="gpl"
3606 resample_filter_deps="avresample"
3607 roberts_opencl_filter_deps="opencl"
3608 rubberband_filter_deps="librubberband"
3609 sab_filter_deps="gpl swscale"
3610 scale2ref_filter_deps="swscale"
3611 scale_filter_deps="swscale"
3612 scale_qsv_filter_deps="libmfx"
3613 scdet_filter_select="scene_sad"
3614 select_filter_select="scene_sad"
3615 sharpness_vaapi_filter_deps="vaapi"
3616 showcqt_filter_deps="avcodec avformat swscale"
3617 showcqt_filter_suggest="libfontconfig libfreetype"
3618 showcqt_filter_select="fft"
3619 showfreqs_filter_deps="avcodec"
3620 showfreqs_filter_select="fft"
3621 showspatial_filter_select="fft"
3622 showspectrum_filter_deps="avcodec"
3623 showspectrum_filter_select="fft"
3624 showspectrumpic_filter_deps="avcodec"
3625 showspectrumpic_filter_select="fft"
3626 signature_filter_deps="gpl avcodec avformat"
3627 sinc_filter_select="rdft"
3628 smartblur_filter_deps="gpl swscale"
3629 sobel_opencl_filter_deps="opencl"
3630 sofalizer_filter_deps="libmysofa avcodec"
3631 sofalizer_filter_select="fft"
3632 spectrumsynth_filter_deps="avcodec"
3633 spectrumsynth_filter_select="fft"
3634 spp_filter_deps="gpl avcodec"
3635 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3636 sr_filter_deps="avformat swscale"
3637 sr_filter_select="dnn"
3638 stereo3d_filter_deps="gpl"
3639 subtitles_filter_deps="avformat avcodec libass"
3640 super2xsai_filter_deps="gpl"
3641 pixfmts_super2xsai_test_deps="super2xsai_filter"
3642 superequalizer_filter_select="rdft"
3643 surround_filter_select="rdft"
3644 tinterlace_filter_deps="gpl"
3645 tinterlace_merge_test_deps="tinterlace_filter"
3646 tinterlace_pad_test_deps="tinterlace_filter"
3647 tonemap_filter_deps="const_nan"
3648 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3649 tonemap_opencl_filter_deps="opencl const_nan"
3650 transpose_opencl_filter_deps="opencl"
3651 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3652 unsharp_opencl_filter_deps="opencl"
3653 uspp_filter_deps="gpl avcodec"
3654 vaguedenoiser_filter_deps="gpl"
3655 vidstabdetect_filter_deps="libvidstab"
3656 vidstabtransform_filter_deps="libvidstab"
3657 libvmaf_filter_deps="libvmaf pthreads"
3658 zmq_filter_deps="libzmq"
3659 zoompan_filter_deps="swscale"
3660 zscale_filter_deps="libzimg const_nan"
3661 scale_vaapi_filter_deps="vaapi"
3662 scale_vulkan_filter_deps="vulkan libglslang"
3663 vpp_qsv_filter_deps="libmfx"
3664 vpp_qsv_filter_select="qsvvpp"
3665 xfade_opencl_filter_deps="opencl"
3666 yadif_cuda_filter_deps="ffnvcodec"
3667 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3668
3669 # examples
3670 avio_list_dir_deps="avformat avutil"
3671 avio_reading_deps="avformat avcodec avutil"
3672 decode_audio_example_deps="avcodec avutil"
3673 decode_video_example_deps="avcodec avutil"
3674 demuxing_decoding_example_deps="avcodec avformat avutil"
3675 encode_audio_example_deps="avcodec avutil"
3676 encode_video_example_deps="avcodec avutil"
3677 extract_mvs_example_deps="avcodec avformat avutil"
3678 filter_audio_example_deps="avfilter avutil"
3679 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3680 filtering_video_example_deps="avfilter avcodec avformat avutil"
3681 http_multiclient_example_deps="avformat avutil fork"
3682 hw_decode_example_deps="avcodec avformat avutil"
3683 metadata_example_deps="avformat avutil"
3684 muxing_example_deps="avcodec avformat avutil swscale"
3685 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3686 remuxing_example_deps="avcodec avformat avutil"
3687 resampling_audio_example_deps="avutil swresample"
3688 scaling_video_example_deps="avutil swscale"
3689 transcode_aac_example_deps="avcodec avformat swresample"
3690 transcoding_example_deps="avfilter avcodec avformat avutil"
3691 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3692 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3693
3694 # EXTRALIBS_LIST
3695 cpu_init_extralibs="pthreads_extralibs"
3696 cws2fws_extralibs="zlib_extralibs"
3697
3698 # libraries, in any order
3699 avcodec_deps="avutil"
3700 avcodec_suggest="libm"
3701 avcodec_select="null_bsf"
3702 avdevice_deps="avformat avcodec avutil"
3703 avdevice_suggest="libm"
3704 avfilter_deps="avutil"
3705 avfilter_suggest="libm"
3706 avformat_deps="avcodec avutil"
3707 avformat_suggest="libm network zlib"
3708 avresample_deps="avutil"
3709 avresample_suggest="libm"
3710 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3711 postproc_deps="avutil gpl"
3712 postproc_suggest="libm"
3713 swresample_deps="avutil"
3714 swresample_suggest="libm libsoxr"
3715 swscale_deps="avutil"
3716 swscale_suggest="libm"
3717
3718 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3719 avfilter_extralibs="pthreads_extralibs"
3720 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3721
3722 # programs
3723 ffmpeg_deps="avcodec avfilter avformat"
3724 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3725                hflip_filter null_filter
3726                transpose_filter trim_filter vflip_filter"
3727 ffmpeg_suggest="ole32 psapi shell32"
3728 ffplay_deps="avcodec avformat swscale swresample sdl2"
3729 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3730 ffplay_suggest="shell32"
3731 ffprobe_deps="avcodec avformat"
3732 ffprobe_suggest="shell32"
3733
3734 # documentation
3735 podpages_deps="perl"
3736 manpages_deps="perl pod2man"
3737 htmlpages_deps="perl"
3738 htmlpages_deps_any="makeinfo_html texi2html"
3739 txtpages_deps="perl makeinfo"
3740 doc_deps_any="manpages htmlpages podpages txtpages"
3741
3742 # default parameters
3743
3744 logfile="ffbuild/config.log"
3745
3746 # installation paths
3747 prefix_default="/usr/local"
3748 bindir_default='${prefix}/bin'
3749 datadir_default='${prefix}/share/ffmpeg'
3750 docdir_default='${prefix}/share/doc/ffmpeg'
3751 incdir_default='${prefix}/include'
3752 libdir_default='${prefix}/lib'
3753 mandir_default='${prefix}/share/man'
3754
3755 # toolchain
3756 ar_default="ar"
3757 cc_default="gcc"
3758 cxx_default="g++"
3759 host_cc_default="gcc"
3760 doxygen_default="doxygen"
3761 install="install"
3762 ln_s_default="ln -s -f"
3763 nm_default="nm -g"
3764 pkg_config_default=pkg-config
3765 ranlib_default="ranlib"
3766 strip_default="strip"
3767 version_script='--version-script'
3768 objformat="elf32"
3769 x86asmexe_default="nasm"
3770 windres_default="windres"
3771 striptype="direct"
3772
3773 # OS
3774 target_os_default=$(tolower $(uname -s))
3775 host_os=$target_os_default
3776
3777 # machine
3778 if test "$target_os_default" = aix; then
3779     arch_default=$(uname -p)
3780     strip_default="strip -X32_64"
3781     nm_default="nm -g -X32_64"
3782 else
3783     arch_default=$(uname -m)
3784 fi
3785 cpu="generic"
3786 intrinsics="none"
3787
3788 # configurable options
3789 enable $PROGRAM_LIST
3790 enable $DOCUMENT_LIST
3791 enable $EXAMPLE_LIST
3792 enable $(filter_out avresample $LIBRARY_LIST)
3793 enable stripping
3794
3795 enable asm
3796 enable debug
3797 enable doc
3798 enable faan faandct faanidct
3799 enable large_tests
3800 enable optimizations
3801 enable runtime_cpudetect
3802 enable safe_bitstream_reader
3803 enable static
3804 enable swscale_alpha
3805 enable valgrind_backtrace
3806
3807 sws_max_filter_size_default=256
3808 set_default sws_max_filter_size
3809
3810 # internal components are enabled by default
3811 enable $EXTRALIBS_LIST
3812
3813 # Avoid external, non-system, libraries getting enabled by dependency resolution
3814 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3815
3816 # build settings
3817 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3818 LIBPREF="lib"
3819 LIBSUF=".a"
3820 FULLNAME='$(NAME)$(BUILDSUF)'
3821 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3822 SLIBPREF="lib"
3823 SLIBSUF=".so"
3824 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3825 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3826 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3827 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3828 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3829 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3830 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3831
3832 asflags_filter=echo
3833 cflags_filter=echo
3834 ldflags_filter=echo
3835
3836 AS_C='-c'
3837 AS_O='-o $@'
3838 CC_C='-c'
3839 CC_E='-E -o $@'
3840 CC_O='-o $@'
3841 CXX_C='-c'
3842 CXX_O='-o $@'
3843 OBJCC_C='-c'
3844 OBJCC_E='-E -o $@'
3845 OBJCC_O='-o $@'
3846 X86ASM_O='-o $@'
3847 LD_O='-o $@'
3848 LD_LIB='-l%'
3849 LD_PATH='-L'
3850 HOSTCC_C='-c'
3851 HOSTCC_E='-E -o $@'
3852 HOSTCC_O='-o $@'
3853 HOSTLD_O='-o $@'
3854 NVCC_C='-c'
3855 NVCC_O='-o $@'
3856
3857 host_extralibs='-lm'
3858 host_cflags_filter=echo
3859 host_ldflags_filter=echo
3860
3861 target_path='$(CURDIR)'
3862
3863 # since the object filename is not given with the -MM flag, the compiler
3864 # is only able to print the basename, and we must add the path ourselves
3865 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3866 DEPFLAGS='-MM'
3867
3868 mkdir -p ffbuild
3869
3870 # find source path
3871 if test -f configure; then
3872     source_path=.
3873 elif test -f src/configure; then
3874     source_path=src
3875 else
3876     source_path=$(cd $(dirname "$0"); pwd)
3877     case "$source_path" in
3878         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3879     esac
3880     test -e "$source_path/config.h" &&
3881         die "Out of tree builds are impossible with config.h in source dir."
3882 fi
3883
3884 for v in "$@"; do
3885     r=${v#*=}
3886     l=${v%"$r"}
3887     r=$(sh_quote "$r")
3888     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3889 done
3890
3891 find_things_extern(){
3892     thing=$1
3893     pattern=$2
3894     file=$source_path/$3
3895     out=${4:-$thing}
3896     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3897 }
3898
3899 find_filters_extern(){
3900     file=$source_path/$1
3901     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3902 }
3903
3904 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3905 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3906 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3907 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3908 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3909 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3910 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3911 CODEC_LIST="
3912     $ENCODER_LIST
3913     $DECODER_LIST
3914 "
3915 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3916 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3917 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3918 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3919
3920 AVCODEC_COMPONENTS_LIST="
3921     $BSF_LIST
3922     $DECODER_LIST
3923     $ENCODER_LIST
3924     $HWACCEL_LIST
3925     $PARSER_LIST
3926 "
3927
3928 AVDEVICE_COMPONENTS_LIST="
3929     $INDEV_LIST
3930     $OUTDEV_LIST
3931 "
3932
3933 AVFILTER_COMPONENTS_LIST="
3934     $FILTER_LIST
3935 "
3936
3937 AVFORMAT_COMPONENTS_LIST="
3938     $DEMUXER_LIST
3939     $MUXER_LIST
3940     $PROTOCOL_LIST
3941 "
3942
3943 ALL_COMPONENTS="
3944     $AVCODEC_COMPONENTS_LIST
3945     $AVDEVICE_COMPONENTS_LIST
3946     $AVFILTER_COMPONENTS_LIST
3947     $AVFORMAT_COMPONENTS_LIST
3948 "
3949
3950 for n in $COMPONENT_LIST; do
3951     v=$(toupper ${n%s})_LIST
3952     eval enable \$$v
3953     eval ${n}_if_any="\$$v"
3954 done
3955
3956 enable $ARCH_EXT_LIST
3957
3958 die_unknown(){
3959     echo "Unknown option \"$1\"."
3960     echo "See $0 --help for available options."
3961     exit 1
3962 }
3963
3964 print_in_columns() {
3965     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3966     {
3967         num_cols = width > col_width ? int(width / col_width) : 1;
3968         num_rows = int((NF + num_cols-1) / num_cols);
3969         y = x = 1;
3970         for (y = 1; y <= num_rows; y++) {
3971             i = y;
3972             for (x = 1; x <= num_cols; x++) {
3973                 if (i <= NF) {
3974                   line = sprintf("%s%-" col_width "s", line, $i);
3975                 }
3976                 i = i + num_rows;
3977             }
3978             print line; line = "";
3979         }
3980     }' | sed 's/ *$//'
3981 }
3982
3983 show_list() {
3984     suffix=_$1
3985     shift
3986     echo $* | sed s/$suffix//g | print_in_columns
3987     exit 0
3988 }
3989
3990 rand_list(){
3991     IFS=', '
3992     set -- $*
3993     unset IFS
3994     for thing; do
3995         comp=${thing%:*}
3996         prob=${thing#$comp}
3997         prob=${prob#:}
3998         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3999         echo "prob ${prob:-0.5}"
4000         printf '%s\n' $comp
4001     done
4002 }
4003
4004 do_random(){
4005     action=$1
4006     shift
4007     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4008     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4009 }
4010
4011 for opt do
4012     optval="${opt#*=}"
4013     case "$opt" in
4014         --extra-ldflags=*)
4015             add_ldflags $optval
4016         ;;
4017         --extra-ldexeflags=*)
4018             add_ldexeflags $optval
4019         ;;
4020         --extra-ldsoflags=*)
4021             add_ldsoflags $optval
4022         ;;
4023         --extra-ldlibflags=*)
4024             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4025                  "removed in the future. Use --extra-ldsoflags instead."
4026             add_ldsoflags $optval
4027         ;;
4028         --extra-libs=*)
4029             add_extralibs $optval
4030         ;;
4031         --disable-devices)
4032             disable $INDEV_LIST $OUTDEV_LIST
4033         ;;
4034         --enable-debug=*)
4035             debuglevel="$optval"
4036         ;;
4037         --disable-programs)
4038             disable $PROGRAM_LIST
4039         ;;
4040         --disable-everything)
4041             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4042         ;;
4043         --disable-all)
4044             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4045             disable $LIBRARY_LIST $PROGRAM_LIST doc
4046             enable avutil
4047         ;;
4048         --enable-random|--disable-random)
4049             action=${opt%%-random}
4050             do_random ${action#--} $COMPONENT_LIST
4051         ;;
4052         --enable-random=*|--disable-random=*)
4053             action=${opt%%-random=*}
4054             do_random ${action#--} $optval
4055         ;;
4056         --enable-sdl)
4057             enable sdl2
4058         ;;
4059         --enable-*=*|--disable-*=*)
4060             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4061             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4062             eval list=\$$(toupper $thing)_LIST
4063             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4064             list=$(filter "$name" $list)
4065             [ "$list" = "" ] && warn "Option $opt did not match anything"
4066             test $action = enable && warn_if_gets_disabled $list
4067             $action $list
4068         ;;
4069         --enable-yasm|--disable-yasm)
4070             warn "The ${opt} option is only provided for compatibility and will be\n"\
4071                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4072             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4073         ;;
4074         --yasmexe=*)
4075             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4076                  "removed in the future. Use --x86asmexe instead."
4077             x86asmexe="$optval"
4078         ;;
4079         --enable-?*|--disable-?*)
4080             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4081             if is_in $option $COMPONENT_LIST; then
4082                 test $action = disable && action=unset
4083                 eval $action \$$(toupper ${option%s})_LIST
4084             elif is_in $option $CMDLINE_SELECT; then
4085                 $action $option
4086             else
4087                 die_unknown $opt
4088             fi
4089         ;;
4090         --list-*)
4091             NAME="${opt#--list-}"
4092             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4093             NAME=${NAME%s}
4094             eval show_list $NAME \$$(toupper $NAME)_LIST
4095         ;;
4096         --help|-h) show_help
4097         ;;
4098         --quiet|-q) quiet=yes
4099         ;;
4100         --fatal-warnings) enable fatal_warnings
4101         ;;
4102         --libfuzzer=*)
4103             libfuzzer_path="$optval"
4104         ;;
4105         *)
4106             optname="${opt%%=*}"
4107             optname="${optname#--}"
4108             optname=$(echo "$optname" | sed 's/-/_/g')
4109             if is_in $optname $CMDLINE_SET; then
4110                 eval $optname='$optval'
4111             elif is_in $optname $CMDLINE_APPEND; then
4112                 append $optname "$optval"
4113             else
4114                 die_unknown $opt
4115             fi
4116         ;;
4117     esac
4118 done
4119
4120 for e in $env; do
4121     eval "export $e"
4122 done
4123
4124 if disabled autodetect; then
4125
4126     # Unless iconv is explicitely disabled by the user, we still want to probe
4127     # for the iconv from the libc.
4128     disabled iconv || enable libc_iconv
4129
4130     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4131     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4132 fi
4133 # Mark specifically enabled, but normally autodetected libraries as requested.
4134 for lib in $AUTODETECT_LIBS; do
4135     enabled $lib && request $lib
4136 done
4137 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4138 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4139 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4140
4141 disabled logging && logfile=/dev/null
4142
4143 # command line configuration sanity checks
4144
4145 # we need to build at least one lib type
4146 if ! enabled_any static shared; then
4147     cat <<EOF
4148 At least one library type must be built.
4149 Specify --enable-static to build the static libraries or --enable-shared to
4150 build the shared libraries as well. To only build the shared libraries specify
4151 --disable-static in addition to --enable-shared.
4152 EOF
4153     exit 1
4154 fi
4155
4156 die_license_disabled() {
4157     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4158 }
4159
4160 die_license_disabled_gpl() {
4161     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4162 }
4163
4164 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4165 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4166
4167 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4168 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4169
4170 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4171
4172 if enabled nonfree; then
4173     license="nonfree and unredistributable"
4174 elif enabled gplv3; then
4175     license="GPL version 3 or later"
4176 elif enabled lgplv3; then
4177     license="LGPL version 3 or later"
4178 elif enabled gpl; then
4179     license="GPL version 2 or later"
4180 else
4181     license="LGPL version 2.1 or later"
4182 fi
4183
4184 enabled_all gnutls openssl &&
4185     die "GnuTLS and OpenSSL must not be enabled at the same time."
4186
4187 enabled_all gnutls mbedtls &&
4188     die "GnuTLS and mbedTLS must not be enabled at the same time."
4189
4190 enabled_all openssl mbedtls &&
4191     die "OpenSSL and mbedTLS must not be enabled at the same time."
4192
4193 # Disable all the library-specific components if the library itself
4194 # is disabled, see AVCODEC_LIST and following _LIST variables.
4195
4196 disable_components(){
4197     disabled ${1} && disable $(
4198         eval components="\$$(toupper ${1})_COMPONENTS"
4199         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4200     )
4201 }
4202
4203 map 'disable_components $v' $LIBRARY_LIST
4204
4205 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4206 set >> $logfile
4207
4208 test -n "$valgrind" && toolchain="valgrind-memcheck"
4209
4210 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4211     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4212     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4213 }
4214
4215 case "$toolchain" in
4216     *-asan)
4217         cc_default="${toolchain%-asan}"
4218         add_cflags  -fsanitize=address
4219         add_ldflags -fsanitize=address
4220     ;;
4221     *-msan)
4222         cc_default="${toolchain%-msan}"
4223         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4224         add_ldflags -fsanitize=memory
4225     ;;
4226     *-tsan)
4227         cc_default="${toolchain%-tsan}"
4228         add_cflags  -fsanitize=thread
4229         add_ldflags -fsanitize=thread
4230         case "$toolchain" in
4231             gcc-tsan)
4232                 add_cflags  -fPIC
4233                 add_ldflags -fPIC
4234                 ;;
4235         esac
4236     ;;
4237     *-usan)
4238         cc_default="${toolchain%-usan}"
4239         add_cflags  -fsanitize=undefined
4240         add_ldflags -fsanitize=undefined
4241     ;;
4242     valgrind-*)
4243         target_exec_default="valgrind"
4244         case "$toolchain" in
4245             valgrind-massif)
4246                 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"
4247                 ;;
4248             valgrind-memcheck)
4249                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4250                 ;;
4251         esac
4252     ;;
4253     msvc)
4254         # Check whether the current MSVC version needs the C99 converter.
4255         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4256         # support enough of C99 to build ffmpeg. Default to the new
4257         # behaviour if the regexp was unable to match anything, since this
4258         # successfully parses the version number of existing supported
4259         # versions that require the converter (MSVC 2010 and 2012).
4260         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4261         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4262             cc_default="cl.exe"
4263             cxx_default="cl.exe"
4264         else
4265             die "Unsupported MSVC version (2013 or newer required)"
4266         fi
4267         ld_default="$source_path/compat/windows/mslink"
4268         nm_default="dumpbin.exe -symbols"
4269         ar_default="lib.exe"
4270         case "$arch" in
4271         aarch64|arm64)
4272             as_default="armasm64.exe"
4273             ;;
4274         arm*)
4275             as_default="armasm.exe"
4276             ;;
4277         esac
4278         target_os_default="win32"
4279         # Use a relative path for TMPDIR. This makes sure all the
4280         # ffconf temp files are written with a relative path, avoiding
4281         # issues with msys/win32 path conversion for MSVC parameters
4282         # such as -Fo<file> or -out:<file>.
4283         TMPDIR=.
4284     ;;
4285     icl)
4286         cc_default="icl"
4287         ld_default="xilink"
4288         nm_default="dumpbin -symbols"
4289         ar_default="xilib"
4290         target_os_default="win32"
4291         TMPDIR=.
4292     ;;
4293     gcov)
4294         add_cflags  -fprofile-arcs -ftest-coverage
4295         add_ldflags -fprofile-arcs -ftest-coverage
4296     ;;
4297     llvm-cov)
4298         add_cflags -fprofile-arcs -ftest-coverage
4299         add_ldflags --coverage
4300     ;;
4301     hardened)
4302         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4303         add_cflags   -fno-strict-overflow -fstack-protector-all
4304         add_ldflags  -Wl,-z,relro -Wl,-z,now
4305         add_cflags   -fPIE
4306         add_ldexeflags -fPIE -pie
4307     ;;
4308     ?*)
4309         die "Unknown toolchain $toolchain"
4310     ;;
4311 esac
4312
4313 if test -n "$cross_prefix"; then
4314     test -n "$arch" && test -n "$target_os" ||
4315         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4316     enable cross_compile
4317 fi
4318
4319 set_default target_os
4320 if test "$target_os" = android; then
4321     cc_default="clang"
4322 fi
4323
4324 ar_default="${cross_prefix}${ar_default}"
4325 cc_default="${cross_prefix}${cc_default}"
4326 cxx_default="${cross_prefix}${cxx_default}"
4327 nm_default="${cross_prefix}${nm_default}"
4328 pkg_config_default="${cross_prefix}${pkg_config_default}"
4329 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4330     ranlib_default="${cross_prefix}${ranlib_default} -D"
4331 else
4332     ranlib_default="${cross_prefix}${ranlib_default}"
4333 fi
4334 strip_default="${cross_prefix}${strip_default}"
4335 windres_default="${cross_prefix}${windres_default}"
4336
4337 sysinclude_default="${sysroot}/usr/include"
4338
4339 if enabled cuda_sdk; then
4340     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4341     enable cuda_nvcc
4342 fi
4343
4344 if enabled cuda_nvcc; then
4345     nvcc_default="nvcc"
4346     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4347 else
4348     nvcc_default="clang"
4349     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4350     NVCC_C=""
4351 fi
4352
4353 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4354     target_exec x86asmexe nvcc
4355 enabled cross_compile || host_cc_default=$cc
4356 set_default host_cc
4357
4358 pkg_config_fail_message=""
4359 if ! $pkg_config --version >/dev/null 2>&1; then
4360     warn "$pkg_config not found, library detection may fail."
4361     pkg_config=false
4362 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4363     pkg_config_fail_message="
4364 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4365 fi
4366
4367 if test $doxygen != $doxygen_default && \
4368   ! $doxygen --version >/dev/null 2>&1; then
4369     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4370 fi
4371
4372 exesuf() {
4373     case $1 in
4374         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4375     esac
4376 }
4377
4378 EXESUF=$(exesuf $target_os)
4379 HOSTEXESUF=$(exesuf $host_os)
4380
4381 # set temporary file name
4382 : ${TMPDIR:=$TEMPDIR}
4383 : ${TMPDIR:=$TMP}
4384 : ${TMPDIR:=/tmp}
4385
4386 if [ -n "$tempprefix" ] ; then
4387     mktemp(){
4388         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4389         echo "$tmpname"
4390         mkdir "$tmpname"
4391     }
4392 elif ! test_cmd mktemp -u XXXXXX; then
4393     # simple replacement for missing mktemp
4394     # NOT SAFE FOR GENERAL USE
4395     mktemp(){
4396         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4397         echo "$tmpname"
4398         mkdir "$tmpname"
4399     }
4400 fi
4401
4402 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4403     die "Unable to create temporary directory in $TMPDIR."
4404
4405 tmpfile(){
4406     tmp="${FFTMPDIR}/test"$2
4407     (set -C; exec > $tmp) 2> /dev/null ||
4408         die "Unable to create temporary file in $FFTMPDIR."
4409     eval $1=$tmp
4410 }
4411
4412 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4413 trap 'exit 2' INT
4414
4415 tmpfile TMPASM .asm
4416 tmpfile TMPC   .c
4417 tmpfile TMPCPP .cpp
4418 tmpfile TMPE   $EXESUF
4419 tmpfile TMPH   .h
4420 tmpfile TMPM   .m
4421 tmpfile TMPCU  .cu
4422 tmpfile TMPO   .o
4423 tmpfile TMPS   .S
4424 tmpfile TMPSH  .sh
4425 tmpfile TMPV   .ver
4426
4427 unset -f mktemp
4428
4429 chmod +x $TMPE
4430
4431 # make sure we can execute files in $TMPDIR
4432 cat > $TMPSH 2>> $logfile <<EOF
4433 #! /bin/sh
4434 EOF
4435 chmod +x $TMPSH >> $logfile 2>&1
4436 if ! $TMPSH >> $logfile 2>&1; then
4437     cat <<EOF
4438 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4439 variable to another directory and make sure that it is not mounted noexec.
4440 EOF
4441     die "Sanity test failed."
4442 fi
4443
4444 armasm_flags(){
4445     for flag; do
4446         case $flag in
4447             # Filter out MSVC cl.exe options from cflags that shouldn't
4448             # be passed to gas-preprocessor
4449             -M[TD]*)                                            ;;
4450             *)                  echo $flag                      ;;
4451         esac
4452    done
4453 }
4454
4455 cparser_flags(){
4456     for flag; do
4457         case $flag in
4458             -Wno-switch)             echo -Wno-switch-enum ;;
4459             -Wno-format-zero-length) ;;
4460             -Wdisabled-optimization) ;;
4461             -Wno-pointer-sign)       echo -Wno-other ;;
4462             *)                       echo $flag ;;
4463         esac
4464     done
4465 }
4466
4467 msvc_common_flags(){
4468     for flag; do
4469         case $flag in
4470             # In addition to specifying certain flags under the compiler
4471             # specific filters, they must be specified here as well or else the
4472             # generic catch all at the bottom will print the original flag.
4473             -Wall)                ;;
4474             -Wextra)              ;;
4475             -std=c*)              ;;
4476             # Common flags
4477             -fomit-frame-pointer) ;;
4478             -g)                   echo -Z7 ;;
4479             -fno-math-errno)      ;;
4480             -fno-common)          ;;
4481             -fno-signed-zeros)    ;;
4482             -fPIC)                ;;
4483             -mthumb)              ;;
4484             -march=*)             ;;
4485             -lz)                  echo zlib.lib ;;
4486             -lx264)               echo libx264.lib ;;
4487             -lstdc++)             ;;
4488             -l*)                  echo ${flag#-l}.lib ;;
4489             -LARGEADDRESSAWARE)   echo $flag ;;
4490             -L*)                  echo -libpath:${flag#-L} ;;
4491             -Wl,*)                ;;
4492             *)                    echo $flag ;;
4493         esac
4494     done
4495 }
4496
4497 msvc_flags(){
4498     msvc_common_flags "$@"
4499     for flag; do
4500         case $flag in
4501             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4502                                        -wd4554 ;;
4503             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4504                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4505                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4506                                        -wd4307 \
4507                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4508         esac
4509     done
4510 }
4511
4512 icl_flags(){
4513     msvc_common_flags "$@"
4514     for flag; do
4515         case $flag in
4516             # Despite what Intel's documentation says -Wall, which is supported
4517             # on Windows, does enable remarks so disable them here.
4518             -Wall)                echo $flag -Qdiag-disable:remark ;;
4519             -std=c99)             echo -Qstd=c99 ;;
4520             -flto)                echo -ipo ;;
4521         esac
4522     done
4523 }
4524
4525 icc_flags(){
4526     for flag; do
4527         case $flag in
4528             -flto)                echo -ipo ;;
4529             *)                    echo $flag ;;
4530         esac
4531     done
4532 }
4533
4534 suncc_flags(){
4535     for flag; do
4536         case $flag in
4537             -march=*|-mcpu=*)
4538                 case "${flag#*=}" in
4539                     native)                   echo -xtarget=native       ;;
4540                     v9|niagara)               echo -xarch=sparc          ;;
4541                     ultrasparc)               echo -xarch=sparcvis       ;;
4542                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4543                     i586|pentium)             echo -xchip=pentium        ;;
4544                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4545                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4546                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4547                     pentium4*)          echo -xtarget=pentium4           ;;
4548                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4549                     *-sse3)             echo -xarch=sse3                 ;;
4550                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4551                     bonnell)                   echo -xarch=ssse3         ;;
4552                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4553                     westmere)                  echo -xtarget=westmere    ;;
4554                     silvermont)                echo -xarch=sse4_2        ;;
4555                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4556                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4557                                                echo -xarch=avx           ;;
4558                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4559                     btver1)                    echo -xarch=amdsse4a      ;;
4560                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4561                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4562                     k8|opteron|athlon64|athlon-fx)
4563                                                echo -xarch=sse2a         ;;
4564                     athlon*)                   echo -xarch=pentium_proa  ;;
4565                 esac
4566                 ;;
4567             -std=c99)             echo -xc99              ;;
4568             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4569             -fPIC)                echo -KPIC -xcode=pic32 ;;
4570             -W*,*)                echo $flag              ;;
4571             -f*-*|-W*|-mimpure-text)                      ;;
4572             -shared)              echo -G                 ;;
4573             *)                    echo $flag              ;;
4574         esac
4575     done
4576 }
4577
4578 probe_cc(){
4579     pfx=$1
4580     _cc=$2
4581     first=$3
4582
4583     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4584     unset _ld_o _ldflags _ld_lib _ld_path
4585     unset _depflags _DEPCMD _DEPFLAGS
4586     _flags_filter=echo
4587
4588     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4589         true # no-op to avoid reading stdin in following checks
4590     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4591         _type=llvm_gcc
4592         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4593         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4594         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4595         _cflags_speed='-O3'
4596         _cflags_size='-Os'
4597     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4598         _type=gcc
4599         gcc_version=$($_cc --version | head -n1)
4600         gcc_basever=$($_cc -dumpversion)
4601         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4602         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4603         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4604         case $gcc_basever in
4605             2) ;;
4606             2.*) ;;
4607             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4608         esac
4609         if [ "$first" = true ]; then
4610             case $gcc_basever in
4611                 4.2*)
4612                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4613             esac
4614         fi
4615         _cflags_speed='-O3'
4616         _cflags_size='-Os'
4617     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4618         _type=icc
4619         _ident=$($_cc --version | head -n1)
4620         _depflags='-MMD'
4621         _cflags_speed='-O3'
4622         _cflags_size='-Os'
4623         _cflags_noopt='-O1'
4624         _flags_filter=icc_flags
4625     elif $_cc -v 2>&1 | grep -q xlc; then
4626         _type=xlc
4627         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4628         _cflags_speed='-O5'
4629         _cflags_size='-O5 -qcompact'
4630     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4631         test -d "$sysroot" || die "No valid sysroot specified."
4632         _type=armcc
4633         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4634         armcc_conf="$PWD/armcc.conf"
4635         $_cc --arm_linux_configure                 \
4636              --arm_linux_config_file="$armcc_conf" \
4637              --configure_sysroot="$sysroot"        \
4638              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4639              die "Error creating armcc configuration file."
4640         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4641         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4642         as_default="${cross_prefix}gcc"
4643         _depflags='-MMD'
4644         _cflags_speed='-O3'
4645         _cflags_size='-Os'
4646     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4647         _type=clang
4648         _ident=$($_cc --version 2>/dev/null | head -n1)
4649         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4650         _cflags_speed='-O3'
4651         _cflags_size='-Oz'
4652     elif $_cc -V 2>&1 | grep -q Sun; then
4653         _type=suncc
4654         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4655         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4656         _DEPFLAGS='-xM1 -xc99'
4657         _ldflags='-std=c99'
4658         _cflags_speed='-O5'
4659         _cflags_size='-O5 -xspace'
4660         _flags_filter=suncc_flags
4661     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4662         _type=pathscale
4663         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4664         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4665         _cflags_speed='-O2'
4666         _cflags_size='-Os'
4667         _flags_filter='filter_out -Wdisabled-optimization'
4668     elif $_cc -v 2>&1 | grep -q Open64; then
4669         _type=open64
4670         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4671         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4672         _cflags_speed='-O2'
4673         _cflags_size='-Os'
4674         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4675     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4676         _type=armasm
4677         _ident=$($_cc | head -n1)
4678         # 4509: "This form of conditional instruction is deprecated"
4679         _flags="-nologo -ignore 4509"
4680         _flags_filter=armasm_flags
4681     elif $_cc 2>&1 | grep -q Intel; then
4682         _type=icl
4683         _ident=$($_cc 2>&1 | head -n1)
4684         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4685         # Not only is O3 broken on 13.x+ but it is slower on all previous
4686         # versions (tested) as well.
4687         _cflags_speed="-O2"
4688         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4689         if $_cc 2>&1 | grep -q Linker; then
4690             _ld_o='-out:$@'
4691         else
4692             _ld_o='-Fe$@'
4693         fi
4694         _cc_o='-Fo$@'
4695         _cc_e='-P'
4696         _flags_filter=icl_flags
4697         _ld_lib='lib%.a'
4698         _ld_path='-libpath:'
4699         # -Qdiag-error to make icl error when seeing certain unknown arguments
4700         _flags='-nologo -Qdiag-error:4044,10157'
4701         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4702         # with MSVC which enables it by default.
4703         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4704         disable stripping
4705     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4706         # lld can emulate multiple different linkers; in ms link.exe mode,
4707         # the -? parameter gives the help output which contains an identifyable
4708         # string, while it gives an error in other modes.
4709         _type=lld-link
4710         # The link.exe mode doesn't have a switch for getting the version,
4711         # but we can force it back to gnu mode and get the version from there.
4712         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4713         _ld_o='-out:$@'
4714         _flags_filter=msvc_flags
4715         _ld_lib='lib%.a'
4716         _ld_path='-libpath:'
4717     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4718         _type=msvc
4719         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4720             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4721         else
4722             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4723         fi
4724         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4725         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4726         _cflags_speed="-O2"
4727         _cflags_size="-O1"
4728         _cflags_noopt="-O1"
4729         if $_cc -nologo- 2>&1 | grep -q Linker; then
4730             _ld_o='-out:$@'
4731         else
4732             _ld_o='-Fe$@'
4733         fi
4734         _cc_o='-Fo$@'
4735         _cc_e='-P -Fi$@'
4736         _flags_filter=msvc_flags
4737         _ld_lib='lib%.a'
4738         _ld_path='-libpath:'
4739         _flags='-nologo'
4740         disable stripping
4741     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4742         _type=cparser
4743         _ident=$($_cc --version | head -n1)
4744         _depflags='-MMD'
4745         _cflags_speed='-O4'
4746         _cflags_size='-O2'
4747         _flags_filter=cparser_flags
4748     fi
4749
4750     eval ${pfx}_type=\$_type
4751     eval ${pfx}_ident=\$_ident
4752 }
4753
4754 set_ccvars(){
4755     eval ${1}_C=\${_cc_c-\${${1}_C}}
4756     eval ${1}_E=\${_cc_e-\${${1}_E}}
4757     eval ${1}_O=\${_cc_o-\${${1}_O}}
4758
4759     if [ -n "$_depflags" ]; then
4760         eval ${1}_DEPFLAGS=\$_depflags
4761     else
4762         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4763         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4764         eval DEP${1}FLAGS=\$_flags
4765     fi
4766 }
4767
4768 probe_cc cc "$cc" "true"
4769 cflags_filter=$_flags_filter
4770 cflags_speed=$_cflags_speed
4771 cflags_size=$_cflags_size
4772 cflags_noopt=$_cflags_noopt
4773 add_cflags $_flags $_cflags
4774 cc_ldflags=$_ldflags
4775 set_ccvars CC
4776 set_ccvars CXX
4777
4778 probe_cc hostcc "$host_cc"
4779 host_cflags_filter=$_flags_filter
4780 host_cflags_speed=$_cflags_speed
4781 add_host_cflags  $_flags $_cflags
4782 set_ccvars HOSTCC
4783
4784 test -n "$cc_type" && enable $cc_type ||
4785     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4786
4787 : ${as_default:=$cc}
4788 : ${objcc_default:=$cc}
4789 : ${dep_cc_default:=$cc}
4790 : ${ld_default:=$cc}
4791 : ${host_ld_default:=$host_cc}
4792 set_default ar as objcc dep_cc ld ln_s host_ld windres
4793
4794 probe_cc as "$as"
4795 asflags_filter=$_flags_filter
4796 add_asflags $_flags $_cflags
4797 set_ccvars AS
4798
4799 probe_cc objcc "$objcc"
4800 objcflags_filter=$_flags_filter
4801 add_objcflags $_flags $_cflags
4802 set_ccvars OBJC
4803
4804 probe_cc ld "$ld"
4805 ldflags_filter=$_flags_filter
4806 add_ldflags $_flags $_ldflags
4807 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4808 LD_O=${_ld_o-$LD_O}
4809 LD_LIB=${_ld_lib-$LD_LIB}
4810 LD_PATH=${_ld_path-$LD_PATH}
4811
4812 probe_cc hostld "$host_ld"
4813 host_ldflags_filter=$_flags_filter
4814 add_host_ldflags $_flags $_ldflags
4815 HOSTLD_O=${_ld_o-$HOSTLD_O}
4816
4817 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4818     probe_cc depcc "$dep_cc"
4819     CCDEP=${_DEPCMD:-$DEPCMD}
4820     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4821     DEPCCFLAGS=$_flags
4822 fi
4823
4824 if $ar 2>&1 | grep -q Microsoft; then
4825     arflags="-nologo"
4826     ar_o='-out:$@'
4827 elif $ar 2>&1 | grep -q "\[D\] "; then
4828     arflags="rcD"
4829     ar_o='$@'
4830 else
4831     arflags="rc"
4832     ar_o='$@'
4833 fi
4834
4835 add_cflags $extra_cflags
4836 add_cxxflags $extra_cxxflags
4837 add_objcflags $extra_objcflags
4838 add_asflags $extra_cflags
4839
4840 if test -n "$sysroot"; then
4841     case "$cc_type" in
4842         gcc|llvm_gcc|clang)
4843             add_cppflags --sysroot="$sysroot"
4844             add_ldflags --sysroot="$sysroot"
4845         ;;
4846     esac
4847 fi
4848
4849 if test "$cpu" = host; then
4850     enabled cross_compile &&
4851         warn "--cpu=host makes no sense when cross-compiling."
4852
4853     case "$cc_type" in
4854         gcc|llvm_gcc)
4855             check_native(){
4856                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4857                 sed -n "/cc1.*$1=/{
4858                             s/.*$1=\\([^ ]*\\).*/\\1/
4859                             p
4860                             q
4861                         }" $TMPE
4862             }
4863             cpu=$(check_native -march || check_native -mcpu)
4864         ;;
4865         clang)
4866             check_native(){
4867                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4868                 sed -n "/cc1.*-target-cpu /{
4869                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4870                             p
4871                             q
4872                         }" $TMPE
4873             }
4874             cpu=$(check_native -march)
4875         ;;
4876     esac
4877
4878     test "${cpu:-host}" = host &&
4879         die "--cpu=host not supported with compiler $cc"
4880 fi
4881
4882 # Deal with common $arch aliases
4883 case "$arch" in
4884     aarch64|arm64)
4885         arch="aarch64"
4886     ;;
4887     arm*|iPad*|iPhone*)
4888         arch="arm"
4889     ;;
4890     mips*|IP*)
4891         case "$arch" in
4892         *el)
4893             add_cppflags -EL
4894             add_ldflags -EL
4895         ;;
4896         *eb)
4897             add_cppflags -EB
4898             add_ldflags -EB
4899         ;;
4900         esac
4901         arch="mips"
4902     ;;
4903     parisc*|hppa*)
4904         arch="parisc"
4905     ;;
4906     "Power Macintosh"|ppc*|powerpc*)
4907         arch="ppc"
4908     ;;
4909     s390|s390x)
4910         arch="s390"
4911     ;;
4912     sh4|sh)
4913         arch="sh4"
4914     ;;
4915     sun4*|sparc*)
4916         arch="sparc"
4917     ;;
4918     tilegx|tile-gx)
4919         arch="tilegx"
4920     ;;
4921     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4922         arch="x86"
4923     ;;
4924 esac
4925
4926 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4927 enable $arch
4928
4929 # Add processor-specific flags
4930 if enabled aarch64; then
4931
4932     case $cpu in
4933         armv*)
4934             cpuflags="-march=$cpu"
4935         ;;
4936         *)
4937             cpuflags="-mcpu=$cpu"
4938         ;;
4939     esac
4940
4941 elif enabled alpha; then
4942
4943     cpuflags="-mcpu=$cpu"
4944
4945 elif enabled arm; then
4946
4947     check_arm_arch() {
4948         test_cpp_condition stddef.h \
4949             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4950             $cpuflags
4951     }
4952
4953     probe_arm_arch() {
4954         if   check_arm_arch 4;        then echo armv4
4955         elif check_arm_arch 4T;       then echo armv4t
4956         elif check_arm_arch 5;        then echo armv5
4957         elif check_arm_arch 5E;       then echo armv5e
4958         elif check_arm_arch 5T;       then echo armv5t
4959         elif check_arm_arch 5TE;      then echo armv5te
4960         elif check_arm_arch 5TEJ;     then echo armv5te
4961         elif check_arm_arch 6;        then echo armv6
4962         elif check_arm_arch 6J;       then echo armv6j
4963         elif check_arm_arch 6K;       then echo armv6k
4964         elif check_arm_arch 6Z;       then echo armv6z
4965         elif check_arm_arch 6KZ;      then echo armv6zk
4966         elif check_arm_arch 6ZK;      then echo armv6zk
4967         elif check_arm_arch 6T2;      then echo armv6t2
4968         elif check_arm_arch 7;        then echo armv7
4969         elif check_arm_arch 7A  7_A;  then echo armv7-a
4970         elif check_arm_arch 7S;       then echo armv7-a
4971         elif check_arm_arch 7R  7_R;  then echo armv7-r
4972         elif check_arm_arch 7M  7_M;  then echo armv7-m
4973         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4974         elif check_arm_arch 8A  8_A;  then echo armv8-a
4975         fi
4976     }
4977
4978     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4979
4980     case $cpu in
4981         armv*)
4982             cpuflags="-march=$cpu"
4983             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4984         ;;
4985         *)
4986             cpuflags="-mcpu=$cpu"
4987             case $cpu in
4988                 cortex-a*)                               subarch=armv7a  ;;
4989                 cortex-r*)                               subarch=armv7r  ;;
4990                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4991                 arm11*)                                  subarch=armv6   ;;
4992                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4993                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4994                 *)                             subarch=$(probe_arm_arch) ;;
4995             esac
4996         ;;
4997     esac
4998
4999     case "$subarch" in
5000         armv5t*)    enable fast_clz                ;;
5001         armv[6-8]*)
5002             enable fast_clz
5003             disabled fast_unaligned || enable fast_unaligned
5004             ;;
5005     esac
5006
5007 elif enabled avr32; then
5008
5009     case $cpu in
5010         ap7[02]0[0-2])
5011             subarch="avr32_ap"
5012             cpuflags="-mpart=$cpu"
5013         ;;
5014         ap)
5015             subarch="avr32_ap"
5016             cpuflags="-march=$cpu"
5017         ;;
5018         uc3[ab]*)
5019             subarch="avr32_uc"
5020             cpuflags="-mcpu=$cpu"
5021         ;;
5022         uc)
5023             subarch="avr32_uc"
5024             cpuflags="-march=$cpu"
5025         ;;
5026     esac
5027
5028 elif enabled bfin; then
5029
5030     cpuflags="-mcpu=$cpu"
5031
5032 elif enabled mips; then
5033
5034     if [ "$cpu" != "generic" ]; then
5035         disable mips32r2
5036         disable mips32r5
5037         disable mips64r2
5038         disable mips32r6
5039         disable mips64r6
5040         disable loongson2
5041         disable loongson3
5042         disable mipsdsp
5043         disable mipsdspr2
5044
5045         cpuflags="-march=$cpu"
5046
5047         case $cpu in
5048             # General ISA levels
5049             mips1|mips3)
5050             ;;
5051             mips32r2)
5052                 enable mips32r2
5053             ;;
5054             mips32r5)
5055                 enable mips32r2
5056                 enable mips32r5
5057             ;;
5058             mips64r2|mips64r5)
5059                 enable mips64r2
5060                 enable loongson3
5061             ;;
5062             # Cores from MIPS(MTI)
5063             24kc)
5064                 disable mipsfpu
5065                 enable mips32r2
5066             ;;
5067             24kf*|24kec|34kc|74Kc|1004kc)
5068                 enable mips32r2
5069             ;;
5070             24kef*|34kf*|1004kf*)
5071                 enable mipsdsp
5072                 enable mips32r2
5073             ;;
5074             p5600)
5075                 enable mips32r2
5076                 enable mips32r5
5077                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5078             ;;
5079             i6400)
5080                 enable mips64r6
5081                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5082             ;;
5083             p6600)
5084                 enable mips64r6
5085                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5086             ;;
5087             # Cores from Loongson
5088             loongson2e|loongson2f|loongson3*)
5089                 enable local_aligned
5090                 enable simd_align_16
5091                 enable fast_64bit
5092                 enable fast_clz
5093                 enable fast_cmov
5094                 enable fast_unaligned
5095                 disable aligned_stack
5096                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5097                 if test "$cc_type" = "gcc"; then
5098                     case $gcc_basever in
5099                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5100                         expensive_optimization_flag="-fno-expensive-optimizations"
5101                         ;;
5102                         *)
5103                         expensive_optimization_flag=""
5104                         ;;
5105                     esac
5106                 fi
5107
5108                 case $cpu in
5109                     loongson3*)
5110                         enable loongson3
5111                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5112                     ;;
5113                     loongson2e)
5114                         enable loongson2
5115                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5116                     ;;
5117                     loongson2f)
5118                         enable loongson2
5119                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5120                     ;;
5121                 esac
5122             ;;
5123             *)
5124                 warn "unknown MIPS CPU"
5125             ;;
5126         esac
5127
5128     else
5129         disable mipsdsp
5130         disable mipsdspr2
5131         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5132         warn 'generic cpu selected'
5133     fi
5134
5135 elif enabled ppc; then
5136
5137     disable ldbrx
5138
5139     case $(tolower $cpu) in
5140         601|ppc601|powerpc601)
5141             cpuflags="-mcpu=601"
5142             disable altivec
5143         ;;
5144         603*|ppc603*|powerpc603*)
5145             cpuflags="-mcpu=603"
5146             disable altivec
5147         ;;
5148         604*|ppc604*|powerpc604*)
5149             cpuflags="-mcpu=604"
5150             disable altivec
5151         ;;
5152         g3|75*|ppc75*|powerpc75*)
5153             cpuflags="-mcpu=750"
5154             disable altivec
5155         ;;
5156         g4|745*|ppc745*|powerpc745*)
5157             cpuflags="-mcpu=7450"
5158             disable vsx
5159         ;;
5160         74*|ppc74*|powerpc74*)
5161             cpuflags="-mcpu=7400"
5162             disable vsx
5163         ;;
5164         g5|970|ppc970|powerpc970)
5165             cpuflags="-mcpu=970"
5166             disable vsx
5167         ;;
5168         power[3-6]*)
5169             cpuflags="-mcpu=$cpu"
5170             disable vsx
5171         ;;
5172         power[7-8]*)
5173             cpuflags="-mcpu=$cpu"
5174         ;;
5175         cell)
5176             cpuflags="-mcpu=cell"
5177             enable ldbrx
5178             disable vsx
5179         ;;
5180         e500mc)
5181             cpuflags="-mcpu=e500mc"
5182             disable altivec
5183         ;;
5184         e500v2)
5185             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5186             disable altivec
5187             disable dcbzl
5188         ;;
5189         e500)
5190             cpuflags="-mcpu=8540 -mhard-float"
5191             disable altivec
5192             disable dcbzl
5193         ;;
5194     esac
5195
5196 elif enabled sparc; then
5197
5198     case $cpu in
5199         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5200             cpuflags="-mcpu=$cpu"
5201         ;;
5202         ultrasparc*|niagara[234])
5203             cpuflags="-mcpu=$cpu"
5204         ;;
5205     esac
5206
5207 elif enabled x86; then
5208
5209     case $cpu in
5210         i[345]86|pentium)
5211             cpuflags="-march=$cpu"
5212             disable i686
5213             disable mmx
5214         ;;
5215         # targets that do NOT support nopl and conditional mov (cmov)
5216         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5217             cpuflags="-march=$cpu"
5218             disable i686
5219         ;;
5220         # targets that do support nopl and conditional mov (cmov)
5221         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5222         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5223         |amdfam10|barcelona|b[dt]ver*|znver*)
5224             cpuflags="-march=$cpu"
5225             enable i686
5226             enable fast_cmov
5227         ;;
5228         # targets that do support conditional mov but on which it's slow
5229         pentium4|pentium4m|prescott|nocona)
5230             cpuflags="-march=$cpu"
5231             enable i686
5232             disable fast_cmov
5233         ;;
5234     esac
5235
5236 fi
5237
5238 if [ "$cpu" != generic ]; then
5239     add_cflags  $cpuflags
5240     add_asflags $cpuflags
5241     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5242 fi
5243
5244 # compiler sanity check
5245 test_exec <<EOF
5246 int main(void){ return 0; }
5247 EOF
5248 if test "$?" != 0; then
5249     echo "$cc is unable to create an executable file."
5250     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5251         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5252         echo "Only do this if you know what cross compiling means."
5253     fi
5254     die "C compiler test failed."
5255 fi
5256
5257 add_cppflags -D_ISOC99_SOURCE
5258 add_cxxflags -D__STDC_CONSTANT_MACROS
5259 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5260
5261 # some compilers silently accept -std=c11, so we also need to check that the
5262 # version macro is defined properly
5263 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5264     add_cflags -std=c11 ||
5265     check_cflags -std=c99
5266
5267 check_cppflags -D_FILE_OFFSET_BITS=64
5268 check_cppflags -D_LARGEFILE_SOURCE
5269
5270 add_host_cppflags -D_ISOC99_SOURCE
5271 check_host_cflags -std=c99
5272 check_host_cflags -Wall
5273 check_host_cflags $host_cflags_speed
5274
5275 check_64bit(){
5276     arch32=$1
5277     arch64=$2
5278     expr=${3:-'sizeof(void *) > 4'}
5279     test_code cc "" "int test[2*($expr) - 1]" &&
5280         subarch=$arch64 || subarch=$arch32
5281     enable $subarch
5282 }
5283
5284 case "$arch" in
5285     aarch64|alpha|ia64)
5286         enabled shared && enable_weak pic
5287     ;;
5288     mips)
5289         check_64bit mips mips64 '_MIPS_SIM > 1'
5290         enabled shared && enable_weak pic
5291     ;;
5292     parisc)
5293         check_64bit parisc parisc64
5294         enabled shared && enable_weak pic
5295     ;;
5296     ppc)
5297         check_64bit ppc ppc64
5298         enabled shared && enable_weak pic
5299     ;;
5300     s390)
5301         check_64bit s390 s390x
5302         enabled shared && enable_weak pic
5303     ;;
5304     sparc)
5305         check_64bit sparc sparc64
5306         enabled shared && enable_weak pic
5307     ;;
5308     x86)
5309         check_64bit x86_32 x86_64
5310         # Treat x32 as x64 for now. Note it also needs pic if shared
5311         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5312             subarch=x86_64 && enable x86_64 && disable x86_32
5313         if enabled x86_64; then
5314             enabled shared && enable_weak pic
5315             objformat=elf64
5316         fi
5317     ;;
5318 esac
5319
5320 # OS specific
5321 case $target_os in
5322     aix)
5323         SHFLAGS=-shared
5324         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5325         enabled shared && add_ldflags -Wl,-brtl
5326         arflags='-Xany -r -c'
5327         striptype=""
5328         ;;
5329     android)
5330         disable symver
5331         enable section_data_rel_ro
5332         add_cflags -fPIE
5333         add_ldexeflags -fPIE -pie
5334         SLIB_INSTALL_NAME='$(SLIBNAME)'
5335         SLIB_INSTALL_LINKS=
5336         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5337         ;;
5338     haiku)
5339         prefix_default="/boot/common"
5340         network_extralibs="-lnetwork"
5341         host_extralibs=
5342         ;;
5343     sunos)
5344         SHFLAGS='-shared -Wl,-h,$$(@F)'
5345         enabled x86 && append SHFLAGS -mimpure-text
5346         network_extralibs="-lsocket -lnsl"
5347         add_cppflags -D__EXTENSIONS__
5348         # When using suncc to build, the Solaris linker will mark
5349         # an executable with each instruction set encountered by
5350         # the Solaris assembler.  As our libraries contain their own
5351         # guards for processor-specific code, instead suppress
5352         # generation of the HWCAPS ELF section on Solaris x86 only.
5353         enabled_all suncc x86 &&
5354             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5355             add_ldflags -Wl,-M,mapfile
5356         nm_default='nm -P -g'
5357         striptype=""
5358         version_script='-M'
5359         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5360         ;;
5361     netbsd)
5362         disable symver
5363         oss_indev_extralibs="-lossaudio"
5364         oss_outdev_extralibs="-lossaudio"
5365         enabled gcc || check_ldflags -Wl,-zmuldefs
5366         ;;
5367     openbsd|bitrig)
5368         disable symver
5369         enable section_data_rel_ro
5370         striptype=""
5371         SHFLAGS='-shared'
5372         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5373         SLIB_INSTALL_LINKS=
5374         oss_indev_extralibs="-lossaudio"
5375         oss_outdev_extralibs="-lossaudio"
5376         ;;
5377     dragonfly)
5378         disable symver
5379         ;;
5380     freebsd)
5381         ;;
5382     bsd/os)
5383         add_extralibs -lpoll -lgnugetopt
5384         strip="strip -d"
5385         ;;
5386     darwin)
5387         enabled ppc && add_asflags -force_cpusubtype_ALL
5388         install_name_dir_default='$(SHLIBDIR)'
5389         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5390         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5391         strip="${strip} -x"
5392         add_ldflags -Wl,-dynamic,-search_paths_first
5393         check_cflags -Werror=partial-availability
5394         SLIBSUF=".dylib"
5395         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5396         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5397         enabled x86_64 && objformat="macho64" || objformat="macho32"
5398         enabled_any pic shared x86_64 ||
5399             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5400         check_headers dispatch/dispatch.h &&
5401             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5402         if test -n "$sysroot"; then
5403             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5404             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5405         fi
5406         version_script='-exported_symbols_list'
5407         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5408         # Workaround for Xcode 11 -fstack-check bug
5409         if enabled clang; then
5410             clang_version=$($cc -dumpversion)
5411             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5412         fi
5413         ;;
5414     msys*)
5415         die "Native MSYS builds are discouraged, please use the MINGW environment."
5416         ;;
5417     mingw32*|mingw64*)
5418         target_os=mingw32
5419         LIBTARGET=i386
5420         if enabled x86_64; then
5421             LIBTARGET="i386:x86-64"
5422         elif enabled arm; then
5423             LIBTARGET="arm"
5424         elif enabled aarch64; then
5425             LIBTARGET="arm64"
5426         fi
5427         if enabled shared; then
5428             # Cannot build both shared and static libs when using dllimport.
5429             disable static
5430         fi
5431         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5432         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5433         shlibdir_default="$bindir_default"
5434         SLIBPREF=""
5435         SLIBSUF=".dll"
5436         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5437         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5438         if test_cmd lib.exe -list; then
5439             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5440             if enabled x86_64; then
5441                 LIBTARGET=x64
5442             fi
5443         else
5444             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5445         fi
5446         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5447         SLIB_INSTALL_LINKS=
5448         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5449         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5450         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5451         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5452         enabled x86_64 && objformat="win64" || objformat="win32"
5453         dlltool="${cross_prefix}dlltool"
5454         ranlib=:
5455         enable dos_paths
5456         check_ldflags -Wl,--nxcompat,--dynamicbase
5457         # Lets work around some stupidity in binutils.
5458         # ld will strip relocations from executables even though we need them
5459         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5460         # however ld then forgets what the entry point should be (oops) so we
5461         # have to manually (re)set it.
5462         if enabled x86_32; then
5463             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5464         elif enabled x86_64; then
5465             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5466             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5467             # Set image base >4GB for extra entropy with HEASLR
5468             add_ldexeflags -Wl,--image-base,0x140000000
5469             append SHFLAGS -Wl,--image-base,0x180000000
5470         fi
5471         ;;
5472     win32|win64)
5473         disable symver
5474         if enabled shared; then
5475             # Link to the import library instead of the normal static library
5476             # for shared libs.
5477             LD_LIB='%.lib'
5478             # Cannot build both shared and static libs with MSVC or icl.
5479             disable static
5480         fi
5481         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5482         shlibdir_default="$bindir_default"
5483         SLIBPREF=""
5484         SLIBSUF=".dll"
5485         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5486         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5487         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5488         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5489         SLIB_INSTALL_LINKS=
5490         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5491         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5492         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5493         enabled x86_64 && objformat="win64" || objformat="win32"
5494         ranlib=:
5495         enable dos_paths
5496         ;;
5497     cygwin*)
5498         target_os=cygwin
5499         shlibdir_default="$bindir_default"
5500         SLIBPREF="cyg"
5501         SLIBSUF=".dll"
5502         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5503         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5504         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5505         SLIB_INSTALL_LINKS=
5506         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5507         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5508         enabled x86_64 && objformat="win64" || objformat="win32"
5509         enable dos_paths
5510         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5511         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5512         ;;
5513     *-dos|freedos|opendos)
5514         network_extralibs="-lsocket"
5515         objformat="coff"
5516         enable dos_paths
5517         ;;
5518     linux)
5519         enable section_data_rel_ro
5520         enabled_any arm aarch64 && enable_weak linux_perf
5521         ;;
5522     irix*)
5523         target_os=irix
5524         ranlib="echo ignoring ranlib"
5525         ;;
5526     os/2*)
5527         strip="lxlite -CS"
5528         striptype=""
5529         objformat="aout"
5530         add_cppflags -D_GNU_SOURCE
5531         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5532         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5533         LIBSUF="_s.a"
5534         SLIBPREF=""
5535         SLIBSUF=".dll"
5536         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5537         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5538         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5539             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5540             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5541             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5542             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5543         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5544             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5545         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5546         SLIB_INSTALL_LINKS=
5547         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5548         enable dos_paths
5549         enable_weak os2threads
5550         ;;
5551     gnu/kfreebsd)
5552         add_cppflags -D_BSD_SOURCE
5553         ;;
5554     gnu)
5555         ;;
5556     qnx)
5557         add_cppflags -D_QNX_SOURCE
5558         network_extralibs="-lsocket"
5559         ;;
5560     symbian)
5561         SLIBSUF=".dll"
5562         enable dos_paths
5563         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5564         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5565         add_ldflags -Wl,--target1-abs,--no-undefined \
5566                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5567                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5568         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5569                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5570                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5571         ;;
5572     minix)
5573         ;;
5574     none)
5575         ;;
5576     *)
5577         die "Unknown OS '$target_os'."
5578         ;;
5579 esac
5580
5581 # test if creating links works
5582 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5583 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5584 mkdir "$link_dest"
5585 $ln_s "$link_dest" "$link_name"
5586 touch "$link_dest/test_file"
5587 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5588     # create link to source path
5589     [ -e src ] && rm src
5590     $ln_s "$source_path" src
5591     source_link=src
5592 else
5593     # creating directory links doesn't work
5594     # fall back to using the full source path
5595     source_link="$source_path"
5596 fi
5597 # cleanup
5598 rm -r "$link_dest"
5599 rm -r "$link_name"
5600
5601 # determine libc flavour
5602
5603 probe_libc(){
5604     pfx=$1
5605     pfx_no_=${pfx%_}
5606     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5607     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5608         eval ${pfx}libc_type=uclibc
5609         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5610     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5611         eval ${pfx}libc_type=glibc
5612         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5613     # MinGW headers can be installed on Cygwin, so check for newlib first.
5614     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5615         eval ${pfx}libc_type=newlib
5616         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5617     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5618     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5619         eval ${pfx}libc_type=mingw64
5620         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5621             add_compat msvcrt/snprintf.o
5622             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5623         fi
5624         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5625         eval test \$${pfx_no_}cc_type = "gcc" &&
5626             add_${pfx}cppflags -D__printf__=__gnu_printf__
5627         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5628             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5629         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5630     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5631          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5632         eval ${pfx}libc_type=mingw32
5633         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5634             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5635             die "ERROR: MinGW32 runtime version must be >= 3.15."
5636         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5637         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5638             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5639         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5640             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5641         eval test \$${pfx_no_}cc_type = "gcc" &&
5642             add_${pfx}cppflags -D__printf__=__gnu_printf__
5643         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5644     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5645         eval ${pfx}libc_type=msvcrt
5646         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5647             if [ "$pfx" = host_ ]; then
5648                 add_host_cppflags -Dsnprintf=_snprintf
5649             else
5650                 add_compat strtod.o strtod=avpriv_strtod
5651                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5652                                              _snprintf=avpriv_snprintf  \
5653                                              vsnprintf=avpriv_vsnprintf
5654             fi
5655         fi
5656         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5657         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5658         # 0x601 by default unless something else is set by the user.
5659         # This can easily lead to us detecting functions only present
5660         # in such new versions and producing binaries requiring windows 7.0.
5661         # Therefore explicitly set the default to Vista unless the user has
5662         # set something else on the command line.
5663         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5664         # family. For these cases, configure is free to use any functions
5665         # found in the SDK headers by default. (Alternatively, we could force
5666         # _WIN32_WINNT to 0x0602 in that case.)
5667         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5668             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5669 #ifdef WINAPI_FAMILY
5670 #include <winapifamily.h>
5671 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5672 #error not desktop
5673 #endif
5674 #endif
5675 EOF
5676         if [ "$pfx" = "" ]; then
5677             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5678             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5679         fi
5680     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5681         eval ${pfx}libc_type=klibc
5682     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5683         eval ${pfx}libc_type=bionic
5684     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5685         eval ${pfx}libc_type=solaris
5686         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5687     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5688         eval ${pfx}libc_type=djgpp
5689         add_cppflags -U__STRICT_ANSI__
5690         add_cflags "-include $source_path/compat/djgpp/math.h"
5691         add_compat djgpp/math.o
5692     fi
5693     test_${pfx}cc <<EOF
5694 #include <time.h>
5695 void *v = localtime_r;
5696 EOF
5697 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5698 #include <time.h>
5699 void *v = localtime_r;
5700 EOF
5701
5702     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5703 }
5704
5705 probe_libc
5706 probe_libc host_
5707
5708 # hacks for compiler/libc/os combinations
5709
5710 case $libc_type in
5711     bionic)
5712         add_compat strtod.o strtod=avpriv_strtod
5713         ;;
5714 esac
5715
5716 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5717     add_cppflags '-I\$(SRC_PATH)/compat/float'
5718
5719 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5720
5721 set_default libdir
5722 : ${shlibdir_default:="$libdir"}
5723 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5724
5725 set_default $PATHS_LIST
5726 set_default nm
5727
5728 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5729
5730 enable_weak_pic() {
5731     disabled pic && return
5732     enable pic
5733     add_cppflags -DPIC
5734     case "$target_os" in
5735     mingw*|cygwin*|win*)
5736         ;;
5737     *)
5738         add_cflags -fPIC
5739         add_asflags -fPIC
5740         ;;
5741     esac
5742 }
5743
5744 enabled pic && enable_weak_pic
5745
5746 test_cc <<EOF || die "Symbol mangling check failed."
5747 int ff_extern;
5748 EOF
5749 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5750 extern_prefix=${sym%%ff_extern*}
5751
5752 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5753
5754 for restrict_keyword in restrict __restrict__ __restrict ""; do
5755     test_code cc "" "char * $restrict_keyword p" && break
5756 done
5757
5758 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5759
5760 # The global variable ensures the bits appear unchanged in the object file.
5761 test_cc <<EOF || die "endian test failed"
5762 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5763 EOF
5764 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5765
5766 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5767
5768 if ! enabled ppc64 || enabled bigendian; then
5769     disable vsx
5770 fi
5771
5772 check_gas() {
5773     log "check_gas using '$as' as AS"
5774     # :vararg is used on aarch64, arm and ppc altivec
5775     check_as vararg "
5776 .macro m n, y:vararg=0
5777 \n: .int \y
5778 .endm
5779 m x" || return 1
5780     # .altmacro is only used in arm asm
5781     ! enabled arm || check_as gnu_as ".altmacro"
5782 }
5783
5784 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5785     nogas=:
5786     enabled_any arm aarch64 && nogas=die
5787     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5788     as_noop=-v
5789
5790     case $as_type in
5791         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5792         gcc)  gaspp_as_type=gas ;;
5793         *)    gaspp_as_type=$as_type ;;
5794     esac
5795
5796     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5797
5798     test "${as#*gas-preprocessor.pl}" != "$as" ||
5799     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5800         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5801
5802     if ! check_gas ; then
5803         as=${gas:=$as}
5804         check_gas || \
5805             $nogas "GNU assembler not found, install/update gas-preprocessor"
5806     fi
5807
5808     check_as as_func ".func test
5809                       .endfunc"
5810 fi
5811
5812 check_inline_asm inline_asm_labels '"1:\n"'
5813
5814 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5815
5816 if enabled aarch64; then
5817     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5818     # internal assembler in clang 3.3 does not support this instruction
5819     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5820     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5821
5822     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5823
5824 elif enabled alpha; then
5825
5826     check_cflags -mieee
5827
5828 elif enabled arm; then
5829
5830     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5831     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5832 float func(float a, float b){ return a+b; }
5833 EOF
5834     enabled thumb && check_cflags -mthumb || check_cflags -marm
5835
5836     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5837         :
5838     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5839         :
5840     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5841         case "${cross_prefix:-$cc}" in
5842             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5843             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5844 __asm__ (".eabi_attribute 28, 1");
5845 int main(void) { return 0; }
5846 EOF
5847         esac
5848         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5849     fi
5850
5851     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5852     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5853     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5854     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5855     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5856     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5857     enabled setend  && check_insn setend  'setend be'
5858
5859     [ $target_os = linux ] || [ $target_os = android ] ||
5860         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5861             $ARCH_EXT_LIST_ARM
5862
5863     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5864
5865     check_as as_arch_directive ".arch armv7-a"
5866     check_as as_dn_directive   "ra .dn d0.i16"
5867     check_as as_fpu_directive  ".fpu neon"
5868
5869     # llvm's integrated assembler supports .object_arch from llvm 3.5
5870     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5871         check_as as_object_arch ".object_arch armv4"
5872
5873     # MS armasm fails to assemble our PIC constructs
5874     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5875
5876 elif enabled mips; then
5877
5878     # Check toolchain ISA level
5879     if enabled mips64; then
5880         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5881             disable mips64r2
5882
5883         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5884
5885         disable mips32r6 && disable mips32r5 && disable mips32r2
5886     else
5887         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5888             disable mips32r5 && disable mips32r2
5889
5890         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5891         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5892
5893         disable mips64r6 && disable mips64r5 && disable mips64r2
5894     fi
5895
5896     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5897     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5898
5899     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5900     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5901
5902     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5903     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5904     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5905
5906     # loongson2 have no switch cflag so we can only probe toolchain ability
5907     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5908
5909     # loongson3 is paired with MMI
5910     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5911
5912     # MMI can be detected at runtime too
5913     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5914
5915     if enabled bigendian && enabled msa; then
5916         disable msa
5917     fi
5918
5919 elif enabled parisc; then
5920
5921     if enabled gcc; then
5922         case $($cc -dumpversion) in
5923             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5924         esac
5925     fi
5926
5927 elif enabled ppc; then
5928
5929     enable local_aligned
5930
5931     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5932     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5933     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5934     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5935
5936     if enabled altivec; then
5937         check_cflags -maltivec -mabi=altivec
5938
5939         # check if our compiler supports Motorola AltiVec C API
5940         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5941                                     vector signed int v2 = (vector signed int) { 1 };
5942                                     v1 = vec_add(v1, v2);"
5943
5944         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5945     fi
5946
5947     if enabled vsx; then
5948         check_cflags -mvsx &&
5949         check_cc vsx altivec.h "int v[4] = { 0 };
5950                                 vector signed int v1 = vec_vsx_ld(0, v);"
5951     fi
5952
5953     if enabled power8; then
5954         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5955     fi
5956
5957 elif enabled x86; then
5958
5959     check_builtin rdtsc    intrin.h   "__rdtsc()"
5960     check_builtin mm_empty mmintrin.h "_mm_empty()"
5961
5962     enable local_aligned
5963
5964     # check whether EBP is available on x86
5965     # As 'i' is stored on the stack, this program will crash
5966     # if the base pointer is used to access it because the
5967     # base pointer is cleared in the inline assembly code.
5968     check_exec_crash <<EOF && enable ebp_available
5969 volatile int i=0;
5970 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5971 return i;
5972 EOF
5973
5974     # check whether EBX is available on x86
5975     check_inline_asm ebx_available '""::"b"(0)' &&
5976         check_inline_asm ebx_available '"":::"%ebx"'
5977
5978     # check whether xmm clobbers are supported
5979     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5980
5981     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5982         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5983
5984     # check whether binutils is new enough to compile SSSE3/MMXEXT
5985     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5986     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5987
5988     probe_x86asm(){
5989         x86asmexe_probe=$1
5990         if test_cmd $x86asmexe_probe -v; then
5991             x86asmexe=$x86asmexe_probe
5992             x86asm_type=nasm
5993             x86asm_debug="-g -F dwarf"
5994             X86ASMDEP=
5995             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5996         elif test_cmd $x86asmexe_probe --version; then
5997             x86asmexe=$x86asmexe_probe
5998             x86asm_type=yasm
5999             x86asm_debug="-g dwarf2"
6000             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
6001             X86ASM_DEPFLAGS=
6002         fi
6003         check_x86asm x86asm "movbe ecx, [5]"
6004     }
6005
6006     if ! disabled_any asm mmx x86asm; then
6007         disable x86asm
6008         for program in $x86asmexe nasm yasm; do
6009             probe_x86asm $program && break
6010         done
6011         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6012         X86ASMFLAGS="-f $objformat"
6013         enabled pic               && append X86ASMFLAGS "-DPIC"
6014         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6015         case "$objformat" in
6016             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6017         esac
6018
6019         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6020         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6021         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6022         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6023         check_x86asm cpunop          "CPU amdnop"
6024     fi
6025
6026     case "$cpu" in
6027         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6028             disable fast_clz
6029         ;;
6030     esac
6031
6032 fi
6033
6034 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6035
6036 check_ldflags -Wl,--as-needed
6037 check_ldflags -Wl,-z,noexecstack
6038
6039 if ! disabled network; then
6040     check_func getaddrinfo $network_extralibs
6041     check_func inet_aton $network_extralibs
6042
6043     check_type netdb.h "struct addrinfo"
6044     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6045     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6046     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6047     check_type poll.h "struct pollfd"
6048     check_type netinet/sctp.h "struct sctp_event_subscribe"
6049     check_struct "sys/socket.h" "struct msghdr" msg_flags
6050     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6051     check_type netinet/in.h "struct sockaddr_in6"
6052     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6053     check_type "sys/types.h sys/socket.h" socklen_t
6054
6055     # Prefer arpa/inet.h over winsock2
6056     if check_headers arpa/inet.h ; then
6057         check_func closesocket
6058     elif check_headers winsock2.h ; then
6059         check_func_headers winsock2.h closesocket -lws2 &&
6060             network_extralibs="-lws2" ||
6061         { check_func_headers winsock2.h closesocket -lws2_32 &&
6062             network_extralibs="-lws2_32"; } || disable winsock2_h network
6063         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6064
6065         check_type ws2tcpip.h socklen_t
6066         check_type ws2tcpip.h "struct addrinfo"
6067         check_type ws2tcpip.h "struct group_source_req"
6068         check_type ws2tcpip.h "struct ip_mreq_source"
6069         check_type ws2tcpip.h "struct ipv6_mreq"
6070         check_type winsock2.h "struct pollfd"
6071         check_struct winsock2.h "struct sockaddr" sa_len
6072         check_type ws2tcpip.h "struct sockaddr_in6"
6073         check_type ws2tcpip.h "struct sockaddr_storage"
6074     else
6075         disable network
6076     fi
6077 fi
6078
6079 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6080 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6081 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6082 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6083 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6084 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6085 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6086
6087 case "$custom_allocator" in
6088     jemalloc)
6089         # jemalloc by default does not use a prefix
6090         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6091     ;;
6092     tcmalloc)
6093         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6094         malloc_prefix=tc_
6095     ;;
6096 esac
6097
6098 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6099 check_func  ${malloc_prefix}memalign            && enable memalign
6100 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6101
6102 check_func  access
6103 check_func_headers stdlib.h arc4random
6104 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6105 check_func  fcntl
6106 check_func  fork
6107 check_func  gethrtime
6108 check_func  getopt
6109 check_func  getrusage
6110 check_func  gettimeofday
6111 check_func  isatty
6112 check_func  mkstemp
6113 check_func  mmap
6114 check_func  mprotect
6115 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6116 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6117 check_func  sched_getaffinity
6118 check_func  setrlimit
6119 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6120 check_func  strerror_r
6121 check_func  sysconf
6122 check_func  sysctl
6123 check_func  usleep
6124
6125 check_func_headers conio.h kbhit
6126 check_func_headers io.h setmode
6127 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6128 check_func_headers mach/mach_time.h mach_absolute_time
6129 check_func_headers stdlib.h getenv
6130 check_func_headers sys/stat.h lstat
6131
6132 check_func_headers windows.h GetModuleHandle
6133 check_func_headers windows.h GetProcessAffinityMask
6134 check_func_headers windows.h GetProcessTimes
6135 check_func_headers windows.h GetStdHandle
6136 check_func_headers windows.h GetSystemTimeAsFileTime
6137 check_func_headers windows.h LoadLibrary
6138 check_func_headers windows.h MapViewOfFile
6139 check_func_headers windows.h PeekNamedPipe
6140 check_func_headers windows.h SetConsoleTextAttribute
6141 check_func_headers windows.h SetConsoleCtrlHandler
6142 check_func_headers windows.h SetDllDirectory
6143 check_func_headers windows.h Sleep
6144 check_func_headers windows.h VirtualAlloc
6145 check_func_headers glob.h glob
6146 enabled xlib &&
6147     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6148
6149 check_headers direct.h
6150 check_headers dirent.h
6151 check_headers dxgidebug.h
6152 check_headers dxva.h
6153 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6154 check_headers io.h
6155 enabled libdrm &&
6156     check_headers linux/dma-buf.h
6157
6158 check_headers linux/perf_event.h
6159 check_headers libcrystalhd/libcrystalhd_if.h
6160 check_headers malloc.h
6161 check_headers mftransform.h
6162 check_headers net/udplite.h
6163 check_headers poll.h
6164 check_headers sys/param.h
6165 check_headers sys/resource.h
6166 check_headers sys/select.h
6167 check_headers sys/time.h
6168 check_headers sys/un.h
6169 check_headers termios.h
6170 check_headers unistd.h
6171 check_headers valgrind/valgrind.h
6172 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6173 check_headers windows.h
6174 check_headers X11/extensions/XvMClib.h
6175 check_headers asm/types.h
6176
6177 # it seems there are versions of clang in some distros that try to use the
6178 # gcc headers, which explodes for stdatomic
6179 # so we also check that atomics actually work here
6180 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6181
6182 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6183 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6184     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6185 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6186 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6187 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6188
6189 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6190 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6191 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6192
6193 enabled appkit       && check_apple_framework AppKit
6194 enabled audiotoolbox && check_apple_framework AudioToolbox
6195 enabled avfoundation && check_apple_framework AVFoundation
6196 enabled coreimage    && check_apple_framework CoreImage
6197 enabled videotoolbox && check_apple_framework VideoToolbox
6198
6199 check_apple_framework CoreFoundation
6200 check_apple_framework CoreMedia
6201 check_apple_framework CoreVideo
6202 check_apple_framework CoreAudio
6203
6204 enabled avfoundation && {
6205     disable coregraphics applicationservices
6206     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6207     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6208
6209 enabled videotoolbox && {
6210     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6211     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6212     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6213     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6214     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6215     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6216 }
6217
6218 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6219
6220 check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6221 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6222 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6223 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6224 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6225 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6226 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6227
6228 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6229 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6230
6231 if [ -z "$nvccflags" ]; then
6232     nvccflags=$nvccflags_default
6233 fi
6234
6235 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6236     nvccflags="$nvccflags -m64"
6237 else
6238     nvccflags="$nvccflags -m32"
6239 fi
6240
6241 if enabled cuda_nvcc; then
6242     nvccflags="$nvccflags -ptx"
6243 else
6244     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6245     check_nvcc cuda_llvm
6246 fi
6247
6248 if ! disabled ffnvcodec; then
6249     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6250     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6251       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6252       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6253       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6254 fi
6255
6256 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6257
6258 if ! disabled w32threads && ! enabled pthreads; then
6259     check_func_headers "windows.h process.h" _beginthreadex &&
6260         check_type "windows.h" CONDITION_VARIABLE &&
6261         check_type "windows.h" INIT_ONCE &&
6262         enable w32threads || disable w32threads
6263     if ! enabled w32threads && enabled winrt; then
6264         check_func_headers "windows.h" CreateThread &&
6265             enable w32threads || disable w32threads
6266     fi
6267 fi
6268
6269 # check for some common methods of building with pthread support
6270 # do this before the optional library checks as some of them require pthreads
6271 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6272     if check_lib pthreads pthread.h pthread_join   -pthread &&
6273        check_lib pthreads pthread.h pthread_create -pthread; then
6274         add_cflags -pthread
6275     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6276          check_lib pthreads pthread.h pthread_create -pthreads; then
6277         add_cflags -pthreads
6278     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6279          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6280         add_cflags -ldl -pthread
6281     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6282          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6283         :
6284     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6285          check_lib pthreads pthread.h pthread_create -lpthread; then
6286         :
6287     elif check_func pthread_join && check_func pthread_create; then
6288         enable pthreads
6289     fi
6290     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6291
6292     if enabled pthreads; then
6293         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6294         check_func pthread_cancel $pthreads_extralibs
6295     fi
6296 fi
6297
6298 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6299                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6300 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6301 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6302
6303 # On some systems dynamic loading requires no extra linker flags
6304 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6305
6306 check_lib libm math.h sin -lm
6307
6308 atan2f_args=2
6309 copysign_args=2
6310 hypot_args=2
6311 ldexpf_args=2
6312 powf_args=2
6313
6314 for func in $MATH_FUNCS; do
6315     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6316 done
6317
6318 for func in $COMPLEX_FUNCS; do
6319     eval check_complexfunc $func \${${func}_args:-1}
6320 done
6321
6322 # these are off by default, so fail if requested and not available
6323 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6324 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6325 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6326 enabled decklink          && { require_headers DeckLinkAPI.h &&
6327                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6328 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6329 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6330 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6331 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6332 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6333 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6334 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6335                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6336                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6337 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6338 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6339 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6340 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6341 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6342 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6343                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6344                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6345 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6346 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6347 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6348 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6349 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6350 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6351 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6352                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6353                                  warn "using libfdk without pkg-config"; } }
6354 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"
6355 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6356 enabled fontconfig        && enable libfontconfig
6357 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6358 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6359 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6360 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6361 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6362                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6363 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6364                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6365                                done || die "ERROR: libgsm not found"; }
6366 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6367 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6368 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6369 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6370 # While it may appear that require is being used as a pkg-config
6371 # fallback for libmfx, it is actually being used to detect a different
6372 # installation route altogether.  If libmfx is installed via the Intel
6373 # Media SDK or Intel Media Server Studio, these don't come with
6374 # pkg-config support.  Instead, users should make sure that the build
6375 # can find the libraries and headers through other means.
6376 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6377                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6378 if enabled libmfx; then
6379    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6380 fi
6381
6382 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6383 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6384 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6385                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6386 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6387                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6388                                die "ERROR: libnpp not found"; }
6389 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6390 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6391 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6392                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6393                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6394                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6395 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6396 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6397                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6398 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6399 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6400 enabled libopus           && {
6401     enabled libopus_decoder && {
6402         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6403     }
6404     enabled libopus_encoder && {
6405         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6406     }
6407 }
6408 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6409 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6410 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6411 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6412 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6413 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6414 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6415 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6416                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6417 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6418 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6419 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6420 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6421 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6422 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6423 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6424 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6425 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6426 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6427 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6428                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6429                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6430 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6431 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6432 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6433 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6434 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6435 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6436                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6437
6438 enabled libvpx            && {
6439     enabled libvpx_vp8_decoder && {
6440         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6441             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"
6442     }
6443     enabled libvpx_vp8_encoder && {
6444         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6445             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"
6446     }
6447     enabled libvpx_vp9_decoder && {
6448         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6449             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"
6450     }
6451     enabled libvpx_vp9_encoder && {
6452         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6453             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"
6454     }
6455     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6456         die "libvpx enabled but no supported decoders found"
6457     fi
6458 }
6459
6460 enabled libwebp           && {
6461     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6462     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6463 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6464                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6465                                  warn "using libx264 without pkg-config"; } } &&
6466                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6467                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6468 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6469                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6470 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6471 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6472 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6473 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6474 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6475 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6476                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6477                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6478 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6479 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6480                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6481                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6482                                die "ERROR: mbedTLS not found"; }
6483 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6484 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6485                                { ! enabled cross_compile &&
6486                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6487                                  add_ldflags -L/opt/vc/lib/ &&
6488                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6489                                die "ERROR: mmal not found" &&
6490                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6491 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6492                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6493                                die "ERROR: openal not found"; } &&
6494                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6495                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6496 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6497                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6498                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6499                                die "ERROR: opencl not found"; } &&
6500                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6501                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6502                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6503 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6504                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6505                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6506                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6507                                die "ERROR: opengl not found."
6508                              }
6509 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6510                                { ! enabled cross_compile &&
6511                                  add_cflags -isystem/opt/vc/include/IL &&
6512                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6513                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6514                              enable omx
6515 enabled omx               && require_headers OMX_Core.h
6516 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6517                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6518                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6519                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6520                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6521                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6522                                die "ERROR: openssl not found"; }
6523 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6524 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6525                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6526                                { enabled libdrm ||
6527                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6528                              }
6529 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6530
6531
6532 if enabled gcrypt; then
6533     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6534     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6535         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6536         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6537         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6538             die "ERROR: gcrypt not found"
6539         add_cflags $gcrypt_cflags
6540     else
6541         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6542     fi
6543 fi
6544
6545 if enabled sdl2; then
6546     SDL2_CONFIG="${cross_prefix}sdl2-config"
6547     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6548     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6549         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6550         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6551         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6552         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6553         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6554             enable sdl2
6555     fi
6556     if test $target_os = "mingw32"; then
6557         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6558     fi
6559 fi
6560
6561 if enabled decklink; then
6562     case $target_os in
6563         mingw32*|mingw64*|win32|win64)
6564             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6565             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6566             ;;
6567     esac
6568 fi
6569
6570 enabled securetransport &&
6571     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6572     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6573         disable securetransport
6574
6575 enabled securetransport &&
6576     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6577
6578 enabled schannel &&
6579     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6580     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6581     schannel_extralibs="-lsecur32" ||
6582         disable schannel
6583
6584 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6585 enabled makeinfo \
6586     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6587     && enable makeinfo_html || disable makeinfo_html
6588 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6589 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6590 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6591 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6592
6593 # check V4L2 codecs available in the API
6594 if enabled v4l2_m2m; then
6595     check_headers linux/fb.h
6596     check_headers linux/videodev2.h
6597     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6598     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6599     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6600     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6601     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6602     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6603     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6604     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6605     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6606     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6607     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6608 fi
6609
6610 check_headers sys/videoio.h
6611 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6612
6613 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6614 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6615 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6616 # w32api 3.12 had it defined wrong
6617 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6618
6619 check_type "dshow.h" IBaseFilter
6620
6621 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6622 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6623     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6624     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6625     check_headers "dev/ic/bt8xx.h"
6626
6627 if check_struct sys/soundcard.h audio_buf_info bytes; then
6628     enable_sanitized sys/soundcard.h
6629 else
6630     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6631     #include <sys/soundcard.h>
6632     audio_buf_info abc;
6633 EOF
6634 fi
6635
6636 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6637                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6638
6639 enabled libjack &&
6640     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6641
6642 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6643
6644 if enabled libcdio; then
6645     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6646     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6647     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6648     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6649     die "ERROR: No usable libcdio/cdparanoia found"
6650 fi
6651
6652 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6653     disable libxcb_shm libxcb_shape libxcb_xfixes
6654
6655 if enabled libxcb; then
6656     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6657     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6658     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6659 fi
6660
6661 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6662
6663 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6664 # the desktop api partition
6665 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6666 #ifdef WINAPI_FAMILY
6667 #include <winapifamily.h>
6668 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6669 #error desktop, not uwp
6670 #else
6671 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6672 #endif
6673 #else
6674 #error no family set
6675 #endif
6676 EOF
6677
6678 enabled libdrm &&
6679     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6680
6681 enabled vaapi &&
6682     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6683
6684 if enabled vaapi; then
6685     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6686
6687     if enabled xlib; then
6688         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6689     fi
6690
6691     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6692
6693     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6694     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6695     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6696     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6697     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6698     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6699     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6700     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6701     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6702 fi
6703
6704 if enabled_all opencl libdrm ; then
6705     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6706         enable opencl_drm_beignet
6707     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6708         enable opencl_drm_arm
6709 fi
6710
6711 if enabled_all opencl vaapi ; then
6712     if enabled opencl_drm_beignet ; then
6713         enable opencl_vaapi_beignet
6714     else
6715         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6716             enable opencl_vaapi_intel_media
6717     fi
6718 fi
6719
6720 if enabled_all opencl dxva2 ; then
6721     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6722         enable opencl_dxva2
6723 fi
6724
6725 if enabled_all opencl d3d11va ; then
6726     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6727         enable opencl_d3d11
6728 fi
6729
6730 enabled vdpau &&
6731     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6732
6733 enabled vdpau &&
6734     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6735
6736 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6737
6738 enabled vulkan &&
6739     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6740
6741 if enabled x86; then
6742     case $target_os in
6743         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6744             ;;
6745         *)
6746             disable ffnvcodec cuvid nvdec nvenc
6747             ;;
6748     esac
6749 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6750     case $target_os in
6751         linux)
6752             ;;
6753         *)
6754             disable ffnvcodec cuvid nvdec nvenc
6755             ;;
6756     esac
6757 else
6758     disable ffnvcodec cuvid nvdec nvenc
6759 fi
6760
6761 enabled ffnvcodec && enable cuda
6762
6763 enabled nvenc &&
6764     test_cc -I$source_path <<EOF || disable nvenc
6765 #include <ffnvcodec/nvEncodeAPI.h>
6766 NV_ENCODE_API_FUNCTION_LIST flist;
6767 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6768 int main(void) { return 0; }
6769 EOF
6770
6771 if enabled_any nvdec cuvid; then
6772     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6773 fi
6774
6775 enabled amf &&
6776     check_cpp_condition amf "AMF/core/Version.h" \
6777         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6778
6779 # Funny iconv installations are not unusual, so check it after all flags have been set
6780 if enabled libc_iconv; then
6781     check_func_headers iconv.h iconv
6782 elif enabled iconv; then
6783     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6784 fi
6785
6786 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6787
6788 # add some useful compiler flags if supported
6789 check_cflags -Wdeclaration-after-statement
6790 check_cflags -Wall
6791 check_cflags -Wdisabled-optimization
6792 check_cflags -Wpointer-arith
6793 check_cflags -Wredundant-decls
6794 check_cflags -Wwrite-strings
6795 check_cflags -Wtype-limits
6796 check_cflags -Wundef
6797 check_cflags -Wmissing-prototypes
6798 check_cflags -Wno-pointer-to-int-cast
6799 check_cflags -Wstrict-prototypes
6800 check_cflags -Wempty-body
6801
6802 if enabled extra_warnings; then
6803     check_cflags -Wcast-qual
6804     check_cflags -Wextra
6805     check_cflags -Wpedantic
6806 fi
6807
6808 check_disable_warning(){
6809     warning_flag=-W${1#-Wno-}
6810     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6811 }
6812
6813 test_cflags -Werror=unused-command-line-argument &&
6814     append unknown_warning_flags "-Werror=unused-command-line-argument"
6815 test_cflags -Werror=unknown-warning-option &&
6816     append unknown_warning_flags "-Werror=unknown-warning-option"
6817
6818 check_disable_warning -Wno-parentheses
6819 check_disable_warning -Wno-switch
6820 check_disable_warning -Wno-format-zero-length
6821 check_disable_warning -Wno-pointer-sign
6822 check_disable_warning -Wno-unused-const-variable
6823 check_disable_warning -Wno-bool-operation
6824 check_disable_warning -Wno-char-subscripts
6825
6826 check_disable_warning_headers(){
6827     warning_flag=-W${1#-Wno-}
6828     test_cflags $warning_flag && add_cflags_headers $1
6829 }
6830
6831 check_disable_warning_headers -Wno-deprecated-declarations
6832 check_disable_warning_headers -Wno-unused-variable
6833
6834 test_cc <<EOF && enable blocks_extension
6835 void (^block)(void);
6836 EOF
6837
6838 # add some linker flags
6839 check_ldflags -Wl,--warn-common
6840 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6841 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6842 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6843
6844 # add some strip flags
6845 check_stripflags -x
6846
6847 enabled neon_clobber_test &&
6848     check_ldflags -Wl,--wrap,avcodec_open2              \
6849                   -Wl,--wrap,avcodec_decode_audio4      \
6850                   -Wl,--wrap,avcodec_decode_video2      \
6851                   -Wl,--wrap,avcodec_decode_subtitle2   \
6852                   -Wl,--wrap,avcodec_encode_audio2      \
6853                   -Wl,--wrap,avcodec_encode_video2      \
6854                   -Wl,--wrap,avcodec_encode_subtitle    \
6855                   -Wl,--wrap,avcodec_send_packet        \
6856                   -Wl,--wrap,avcodec_receive_packet     \
6857                   -Wl,--wrap,avcodec_send_frame         \
6858                   -Wl,--wrap,avcodec_receive_frame      \
6859                   -Wl,--wrap,swr_convert                \
6860                   -Wl,--wrap,avresample_convert ||
6861     disable neon_clobber_test
6862
6863 enabled xmm_clobber_test &&
6864     check_ldflags -Wl,--wrap,avcodec_open2              \
6865                   -Wl,--wrap,avcodec_decode_audio4      \
6866                   -Wl,--wrap,avcodec_decode_video2      \
6867                   -Wl,--wrap,avcodec_decode_subtitle2   \
6868                   -Wl,--wrap,avcodec_encode_audio2      \
6869                   -Wl,--wrap,avcodec_encode_video2      \
6870                   -Wl,--wrap,avcodec_encode_subtitle    \
6871                   -Wl,--wrap,avcodec_send_packet        \
6872                   -Wl,--wrap,avcodec_receive_packet     \
6873                   -Wl,--wrap,avcodec_send_frame         \
6874                   -Wl,--wrap,avcodec_receive_frame      \
6875                   -Wl,--wrap,swr_convert                \
6876                   -Wl,--wrap,avresample_convert         \
6877                   -Wl,--wrap,sws_scale ||
6878     disable xmm_clobber_test
6879
6880 check_ld "cc" proper_dce <<EOF
6881 extern const int array[512];
6882 static inline int func(void) { return array[0]; }
6883 int main(void) { return 0; }
6884 EOF
6885
6886 if enabled proper_dce; then
6887     echo "X { local: *; };" > $TMPV
6888     if test_ldflags -Wl,${version_script},$TMPV; then
6889         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6890         quotes='""'
6891         test_cc <<EOF && enable symver_asm_label
6892 void ff_foo(void) __asm__ ("av_foo@VERSION");
6893 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6894 EOF
6895         test_cc <<EOF && enable symver_gnu_asm
6896 __asm__(".symver ff_foo,av_foo@VERSION");
6897 void ff_foo(void) {}
6898 EOF
6899     fi
6900 fi
6901
6902 if [ -z "$optflags" ]; then
6903     if enabled small; then
6904         optflags=$cflags_size
6905     elif enabled optimizations; then
6906         optflags=$cflags_speed
6907     else
6908         optflags=$cflags_noopt
6909     fi
6910 fi
6911
6912 check_optflags(){
6913     check_cflags "$@"
6914     enabled lto && check_ldflags "$@"
6915 }
6916
6917 check_optflags $optflags
6918 check_optflags -fno-math-errno
6919 check_optflags -fno-signed-zeros
6920
6921 if enabled lto; then
6922     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6923     check_cflags  -flto
6924     check_ldflags -flto $cpuflags
6925     disable inline_asm_direct_symbol_refs
6926 fi
6927
6928 enabled ftrapv && check_cflags -ftrapv
6929
6930 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6931 int x;
6932 EOF
6933
6934
6935 if enabled icc; then
6936     # Just warnings, no remarks
6937     check_cflags -w1
6938     # -wd: Disable following warnings
6939     # 144, 167, 556: -Wno-pointer-sign
6940     # 188: enumerated type mixed with another type
6941     # 1292: attribute "foo" ignored
6942     # 1419: external declaration in primary source file
6943     # 10006: ignoring unknown option -fno-signed-zeros
6944     # 10148: ignoring unknown option -Wno-parentheses
6945     # 10156: ignoring option '-W'; no argument required
6946     # 13200: No EMMS instruction before call to function
6947     # 13203: No EMMS instruction before return from function
6948     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6949     # 11030: Warning unknown option --as-needed
6950     # 10156: ignoring option '-export'; no argument required
6951     check_ldflags -wd10156,11030
6952     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6953     enable ebp_available
6954     # The test above does not test linking
6955     enabled lto && disable symver_asm_label
6956     if enabled x86_32; then
6957         icc_version=$($cc -dumpversion)
6958         test ${icc_version%%.*} -ge 11 &&
6959             check_cflags -falign-stack=maintain-16-byte ||
6960             disable aligned_stack
6961     fi
6962 elif enabled gcc; then
6963     check_optflags -fno-tree-vectorize
6964     check_cflags -Werror=format-security
6965     check_cflags -Werror=implicit-function-declaration
6966     check_cflags -Werror=missing-prototypes
6967     check_cflags -Werror=return-type
6968     check_cflags -Werror=vla
6969     check_cflags -Wformat
6970     check_cflags -fdiagnostics-color=auto
6971     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6972     if enabled x86_32; then
6973         case $target_os in
6974         *bsd*)
6975             # BSDs don't guarantee a 16 byte aligned stack, but we can
6976             # request GCC to try to maintain 16 byte alignment throughout
6977             # function calls. Library entry points that might call assembly
6978             # functions align the stack. (The parameter means 2^4 bytes.)
6979             check_cflags -mpreferred-stack-boundary=4
6980             ;;
6981         esac
6982     fi
6983 elif enabled llvm_gcc; then
6984     check_cflags -mllvm -stack-alignment=16
6985 elif enabled clang; then
6986     if enabled x86_32; then
6987         # Clang doesn't support maintaining alignment without assuming the
6988         # same alignment in every function. If 16 byte alignment would be
6989         # enabled, one would also have to either add attribute_align_arg on
6990         # every single entry point into the libraries or enable -mstackrealign
6991         # (doing stack realignment in every single function).
6992         case $target_os in
6993         mingw32|win32|*bsd*)
6994             disable aligned_stack
6995             ;;
6996         *)
6997             check_cflags -mllvm -stack-alignment=16
6998             check_cflags -mstack-alignment=16
6999             ;;
7000         esac
7001     else
7002         check_cflags -mllvm -stack-alignment=16
7003         check_cflags -mstack-alignment=16
7004     fi
7005     check_cflags -Qunused-arguments
7006     check_cflags -Werror=implicit-function-declaration
7007     check_cflags -Werror=missing-prototypes
7008     check_cflags -Werror=return-type
7009 elif enabled cparser; then
7010     add_cflags -Wno-missing-variable-declarations
7011     add_cflags -Wno-empty-statement
7012 elif enabled armcc; then
7013     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7014     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7015     # 2523: use of inline assembly is deprecated
7016     add_cflags -W${armcc_opt},--diag_suppress=2523
7017     add_cflags -W${armcc_opt},--diag_suppress=1207
7018     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7019     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7020     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7021     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7022 elif enabled pathscale; then
7023     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7024     disable inline_asm
7025 elif enabled_any msvc icl; then
7026     enabled x86_32 && disable aligned_stack
7027     enabled_all x86_32 debug && add_cflags -Oy-
7028     enabled debug && add_ldflags -debug
7029     enable pragma_deprecated
7030     if enabled icl; then
7031         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7032         # (correctly) on icl 13.x.
7033         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7034             add_cflags -Qansi-alias
7035         # Some inline asm is not compilable in debug
7036         if enabled debug; then
7037             disable ebp_available
7038             disable ebx_available
7039         fi
7040     fi
7041     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7042     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7043     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7044     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7045     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7046     # MSVC 2013 and newer can handle it fine.
7047     # If this declspec fails, force including stdlib.h before the restrict redefinition
7048     # happens in config.h.
7049     if [ $restrict_keyword != restrict ]; then
7050         test_cc <<EOF || add_cflags -FIstdlib.h
7051 __declspec($restrict_keyword) void *foo(int);
7052 EOF
7053     fi
7054     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7055     # Issue has been fixed in MSVC v19.00.24218.
7056     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7057         check_cflags -d2SSAOptimizer-
7058     # enable utf-8 source processing on VS2015 U2 and newer
7059     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7060         add_cflags -utf-8
7061 fi
7062
7063 for pfx in "" host_; do
7064     varname=${pfx%_}cc_type
7065     eval "type=\$$varname"
7066     if [ "$type" = "msvc" ]; then
7067         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7068 static inline int foo(int a) { return a; }
7069 EOF
7070     fi
7071 done
7072
7073 case $as_type in
7074     clang)
7075         add_asflags -Qunused-arguments
7076     ;;
7077 esac
7078
7079 case $ld_type in
7080     clang)
7081         check_ldflags -Qunused-arguments
7082     ;;
7083 esac
7084
7085 enable frame_thread_encoder
7086
7087 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7088
7089 check_deps $CONFIG_LIST       \
7090            $CONFIG_EXTRA      \
7091            $HAVE_LIST         \
7092            $ALL_COMPONENTS    \
7093
7094 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"
7095 enabled avresample && warn "Building with deprecated library libavresample"
7096
7097 case $target_os in
7098 haiku)
7099     disable memalign
7100     disable posix_memalign
7101     ;;
7102 *-dos|freedos|opendos)
7103     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7104         disable memalign
7105     fi
7106     ;;
7107 esac
7108
7109 flatten_extralibs(){
7110     nested_entries=
7111     list_name=$1
7112     eval list=\$${1}
7113     for entry in $list; do
7114         entry_copy=$entry
7115         resolve entry_copy
7116         flat_entries=
7117         for e in $entry_copy; do
7118             case $e in
7119                 *_extralibs) nested_entries="$nested_entries$e ";;
7120                           *) flat_entries="$flat_entries$e ";;
7121             esac
7122         done
7123         eval $entry="\$flat_entries"
7124     done
7125     append $list_name "$nested_entries"
7126
7127     resolve nested_entries
7128     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7129         flatten_extralibs $list_name
7130     fi
7131 }
7132
7133 flatten_extralibs_wrapper(){
7134     list_name=$1
7135     flatten_extralibs $list_name
7136     unique $list_name
7137     resolve $list_name
7138     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7139     eval printf \''%s'\' \""\$$list_name"\"
7140 }
7141
7142 for linkunit in $LIBRARY_LIST; do
7143     unset current_extralibs
7144     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7145     for comp in ${components}; do
7146         enabled $comp || continue
7147         comp_extralibs="${comp}_extralibs"
7148         append current_extralibs $comp_extralibs
7149     done
7150     eval prepend ${linkunit}_extralibs $current_extralibs
7151 done
7152
7153 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7154     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7155 done
7156
7157 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7158
7159 for thread in $THREADS_LIST; do
7160     if enabled $thread; then
7161         test -n "$thread_type" &&
7162             die "ERROR: Only one thread type must be selected." ||
7163             thread_type="$thread"
7164     fi
7165 done
7166
7167 if disabled stdatomic; then
7168     if enabled atomics_gcc; then
7169         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7170     elif enabled atomics_win32; then
7171         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7172     elif enabled atomics_suncc; then
7173         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7174     elif enabled pthreads; then
7175         add_compat atomics/pthread/stdatomic.o
7176         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7177     else
7178         enabled threads && die "Threading is enabled, but no atomics are available"
7179         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7180     fi
7181 fi
7182
7183 # Check if requested libraries were found.
7184 for lib in $AUTODETECT_LIBS; do
7185     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7186 done
7187
7188 enabled zlib && add_cppflags -DZLIB_CONST
7189
7190 # conditional library dependencies, in any order
7191 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7192 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7193 enabled afir_filter         && prepend avfilter_deps "avcodec"
7194 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7195 enabled aresample_filter    && prepend avfilter_deps "swresample"
7196 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7197 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7198 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7199 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7200 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7201 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7202 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7203 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7204 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7205 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7206 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7207 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7208 enabled pan_filter          && prepend avfilter_deps "swresample"
7209 enabled pp_filter           && prepend avfilter_deps "postproc"
7210 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7211 enabled resample_filter && prepend avfilter_deps "avresample"
7212 enabled sab_filter          && prepend avfilter_deps "swscale"
7213 enabled scale_filter    && prepend avfilter_deps "swscale"
7214 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7215 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7216 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7217 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7218 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7219 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7220 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7221 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7222 enabled spp_filter          && prepend avfilter_deps "avcodec"
7223 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7224 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7225 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7226 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7227
7228 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7229
7230 #FIXME
7231 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7232     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7233
7234 enabled opus_decoder    && prepend avcodec_deps "swresample"
7235
7236 # reorder the items at var $1 to align with the items order at var $2 .
7237 # die if an item at $1 is not at $2 .
7238 reorder_by(){
7239     eval rb_in=\$$1
7240     eval rb_ordered=\$$2
7241
7242     for rb in $rb_in; do
7243         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7244     done
7245
7246     rb_out=
7247     for rb in $rb_ordered; do
7248         is_in $rb $rb_in && rb_out="$rb_out$rb "
7249     done
7250     eval $1=\$rb_out
7251 }
7252
7253 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7254 # within a set of N items, N expansions are enough to expose a cycle.
7255 expand_deps(){
7256     unique ${1}_deps  # required for the early break test.
7257     for dummy in $LIBRARY_LIST; do  # N iteratios
7258         eval deps=\$${1}_deps
7259         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7260         unique ${1}_deps
7261         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7262     done
7263
7264     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7265     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7266 }
7267
7268 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7269 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7270
7271 map 'expand_deps $v' $LIBRARY_LIST
7272
7273 if test "$quiet" != "yes"; then
7274
7275 echo "install prefix            $prefix"
7276 echo "source path               $source_path"
7277 echo "C compiler                $cc"
7278 echo "C library                 $libc_type"
7279 if test "$host_cc" != "$cc"; then
7280     echo "host C compiler           $host_cc"
7281     echo "host C library            $host_libc_type"
7282 fi
7283 echo "ARCH                      $arch ($cpu)"
7284 if test "$build_suffix" != ""; then
7285     echo "build suffix              $build_suffix"
7286 fi
7287 if test "$progs_suffix" != ""; then
7288     echo "progs suffix              $progs_suffix"
7289 fi
7290 if test "$extra_version" != ""; then
7291     echo "version string suffix     $extra_version"
7292 fi
7293 echo "big-endian                ${bigendian-no}"
7294 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7295 if enabled x86; then
7296     echo "standalone assembly       ${x86asm-no}"
7297     echo "x86 assembler             ${x86asmexe}"
7298     echo "MMX enabled               ${mmx-no}"
7299     echo "MMXEXT enabled            ${mmxext-no}"
7300     echo "3DNow! enabled            ${amd3dnow-no}"
7301     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7302     echo "SSE enabled               ${sse-no}"
7303     echo "SSSE3 enabled             ${ssse3-no}"
7304     echo "AESNI enabled             ${aesni-no}"
7305     echo "AVX enabled               ${avx-no}"
7306     echo "AVX2 enabled              ${avx2-no}"
7307     echo "AVX-512 enabled           ${avx512-no}"
7308     echo "XOP enabled               ${xop-no}"
7309     echo "FMA3 enabled              ${fma3-no}"
7310     echo "FMA4 enabled              ${fma4-no}"
7311     echo "i686 features enabled     ${i686-no}"
7312     echo "CMOV is fast              ${fast_cmov-no}"
7313     echo "EBX available             ${ebx_available-no}"
7314     echo "EBP available             ${ebp_available-no}"
7315 fi
7316 if enabled aarch64; then
7317     echo "NEON enabled              ${neon-no}"
7318     echo "VFP enabled               ${vfp-no}"
7319 fi
7320 if enabled arm; then
7321     echo "ARMv5TE enabled           ${armv5te-no}"
7322     echo "ARMv6 enabled             ${armv6-no}"
7323     echo "ARMv6T2 enabled           ${armv6t2-no}"
7324     echo "VFP enabled               ${vfp-no}"
7325     echo "NEON enabled              ${neon-no}"
7326     echo "THUMB enabled             ${thumb-no}"
7327 fi
7328 if enabled mips; then
7329     echo "MIPS FPU enabled          ${mipsfpu-no}"
7330     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7331     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7332     echo "MIPS MSA enabled          ${msa-no}"
7333     echo "MIPS MSA2 enabled         ${msa2-no}"
7334     echo "LOONGSON MMI enabled      ${mmi-no}"
7335 fi
7336 if enabled ppc; then
7337     echo "AltiVec enabled           ${altivec-no}"
7338     echo "VSX enabled               ${vsx-no}"
7339     echo "POWER8 enabled            ${power8-no}"
7340     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7341     echo "dcbzl available           ${dcbzl-no}"
7342 fi
7343 echo "debug symbols             ${debug-no}"
7344 echo "strip symbols             ${stripping-no}"
7345 echo "optimize for size         ${small-no}"
7346 echo "optimizations             ${optimizations-no}"
7347 echo "static                    ${static-no}"
7348 echo "shared                    ${shared-no}"
7349 echo "postprocessing support    ${postproc-no}"
7350 echo "network support           ${network-no}"
7351 echo "threading support         ${thread_type-no}"
7352 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7353 echo "texi2html enabled         ${texi2html-no}"
7354 echo "perl enabled              ${perl-no}"
7355 echo "pod2man enabled           ${pod2man-no}"
7356 echo "makeinfo enabled          ${makeinfo-no}"
7357 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7358 test -n "$random_seed" &&
7359     echo "random seed               ${random_seed}"
7360 echo
7361
7362 echo "External libraries:"
7363 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7364 echo
7365
7366 echo "External libraries providing hardware acceleration:"
7367 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7368 echo
7369
7370 echo "Libraries:"
7371 print_enabled '' $LIBRARY_LIST | print_in_columns
7372 echo
7373
7374 echo "Programs:"
7375 print_enabled '' $PROGRAM_LIST | print_in_columns
7376 echo
7377
7378 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7379     echo "Enabled ${type}s:"
7380     eval list=\$$(toupper $type)_LIST
7381     print_enabled '_*' $list | print_in_columns
7382     echo
7383 done
7384
7385 if test -n "$ignore_tests"; then
7386     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7387     echo "Ignored FATE tests:"
7388     echo $ignore_tests | print_in_columns
7389     echo
7390 fi
7391
7392 echo "License: $license"
7393
7394 fi # test "$quiet" != "yes"
7395
7396 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7397     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7398         if disabled $cfg; then
7399             varname=${cfg}_disable_reason
7400             eval "warn \"Disabled $cfg because \$$varname\""
7401         fi
7402     done
7403 fi
7404
7405 if test -n "$WARNINGS"; then
7406     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7407     enabled fatal_warnings && exit 1
7408 fi
7409
7410 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7411
7412 esc(){
7413     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7414 }
7415
7416 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7417
7418 enabled stripping || strip="echo skipping strip"
7419 enabled stripping || striptype=""
7420
7421 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7422
7423 cat > ffbuild/config.mak <<EOF
7424 # Automatically generated by configure - do not modify!
7425 ifndef FFMPEG_CONFIG_MAK
7426 FFMPEG_CONFIG_MAK=1
7427 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7428 prefix=$prefix
7429 LIBDIR=\$(DESTDIR)$libdir
7430 SHLIBDIR=\$(DESTDIR)$shlibdir
7431 INCDIR=\$(DESTDIR)$incdir
7432 BINDIR=\$(DESTDIR)$bindir
7433 DATADIR=\$(DESTDIR)$datadir
7434 DOCDIR=\$(DESTDIR)$docdir
7435 MANDIR=\$(DESTDIR)$mandir
7436 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7437 INSTALL_NAME_DIR=$install_name_dir
7438 SRC_PATH=$source_path
7439 SRC_LINK=$source_link
7440 ifndef MAIN_MAKEFILE
7441 SRC_PATH:=\$(SRC_PATH:.%=..%)
7442 endif
7443 CC_IDENT=$cc_ident
7444 ARCH=$arch
7445 INTRINSICS=$intrinsics
7446 EXTERN_PREFIX=$extern_prefix
7447 CC=$cc
7448 CXX=$cxx
7449 AS=$as
7450 OBJCC=$objcc
7451 LD=$ld
7452 DEPCC=$dep_cc
7453 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7454 DEPAS=$as
7455 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7456 X86ASM=$x86asmexe
7457 DEPX86ASM=$x86asmexe
7458 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7459 AR=$ar
7460 ARFLAGS=$arflags
7461 AR_O=$ar_o
7462 AR_CMD=$ar
7463 NM_CMD=$nm
7464 RANLIB=$ranlib
7465 STRIP=$strip
7466 STRIPTYPE=$striptype
7467 NVCC=$nvcc
7468 CP=cp -p
7469 LN_S=$ln_s
7470 CPPFLAGS=$CPPFLAGS
7471 CFLAGS=$CFLAGS
7472 CXXFLAGS=$CXXFLAGS
7473 OBJCFLAGS=$OBJCFLAGS
7474 ASFLAGS=$ASFLAGS
7475 NVCCFLAGS=$nvccflags
7476 AS_C=$AS_C
7477 AS_O=$AS_O
7478 OBJCC_C=$OBJCC_C
7479 OBJCC_E=$OBJCC_E
7480 OBJCC_O=$OBJCC_O
7481 CC_C=$CC_C
7482 CC_E=$CC_E
7483 CC_O=$CC_O
7484 CXX_C=$CXX_C
7485 CXX_O=$CXX_O
7486 NVCC_C=$NVCC_C
7487 NVCC_O=$NVCC_O
7488 LD_O=$LD_O
7489 X86ASM_O=$X86ASM_O
7490 LD_LIB=$LD_LIB
7491 LD_PATH=$LD_PATH
7492 DLLTOOL=$dlltool
7493 WINDRES=$windres
7494 DEPWINDRES=$dep_cc
7495 DOXYGEN=$doxygen
7496 LDFLAGS=$LDFLAGS
7497 LDEXEFLAGS=$LDEXEFLAGS
7498 LDSOFLAGS=$LDSOFLAGS
7499 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7500 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7501 X86ASMFLAGS=$X86ASMFLAGS
7502 MSAFLAGS=$MSAFLAGS
7503 MMIFLAGS=$MMIFLAGS
7504 BUILDSUF=$build_suffix
7505 PROGSSUF=$progs_suffix
7506 FULLNAME=$FULLNAME
7507 LIBPREF=$LIBPREF
7508 LIBSUF=$LIBSUF
7509 LIBNAME=$LIBNAME
7510 SLIBPREF=$SLIBPREF
7511 SLIBSUF=$SLIBSUF
7512 EXESUF=$EXESUF
7513 EXTRA_VERSION=$extra_version
7514 CCDEP=$CCDEP
7515 CXXDEP=$CXXDEP
7516 CCDEP_FLAGS=$CCDEP_FLAGS
7517 ASDEP=$ASDEP
7518 ASDEP_FLAGS=$ASDEP_FLAGS
7519 X86ASMDEP=$X86ASMDEP
7520 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7521 CC_DEPFLAGS=$CC_DEPFLAGS
7522 AS_DEPFLAGS=$AS_DEPFLAGS
7523 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7524 HOSTCC=$host_cc
7525 HOSTLD=$host_ld
7526 HOSTCFLAGS=$host_cflags
7527 HOSTCPPFLAGS=$host_cppflags
7528 HOSTEXESUF=$HOSTEXESUF
7529 HOSTLDFLAGS=$host_ldflags
7530 HOSTEXTRALIBS=$host_extralibs
7531 DEPHOSTCC=$host_cc
7532 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7533 HOSTCCDEP=$HOSTCCDEP
7534 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7535 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7536 HOSTCC_C=$HOSTCC_C
7537 HOSTCC_O=$HOSTCC_O
7538 HOSTLD_O=$HOSTLD_O
7539 TARGET_EXEC=$target_exec $target_exec_args
7540 TARGET_PATH=$target_path
7541 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7542 CFLAGS-ffplay=${sdl2_cflags}
7543 CFLAGS_HEADERS=$CFLAGS_HEADERS
7544 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7545 EXTRALIBS=$extralibs
7546 COMPAT_OBJS=$compat_objs
7547 INSTALL=$install
7548 LIBTARGET=${LIBTARGET}
7549 SLIBNAME=${SLIBNAME}
7550 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7551 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7552 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7553 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7554 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7555 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7556 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7557 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7558 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7559 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7560 NOREDZONE_FLAGS=$noredzone_flags
7561 LIBFUZZER_PATH=$libfuzzer_path
7562 IGNORE_TESTS=$ignore_tests
7563 EOF
7564
7565 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7566
7567 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7568     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7569 done
7570
7571 cat > $TMPH <<EOF
7572 /* Automatically generated by configure - do not modify! */
7573 #ifndef FFMPEG_CONFIG_H
7574 #define FFMPEG_CONFIG_H
7575 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7576 #define FFMPEG_LICENSE "$(c_escape $license)"
7577 #define CONFIG_THIS_YEAR 2020
7578 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7579 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7580 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7581 #define av_restrict $restrict_keyword
7582 #define EXTERN_PREFIX "${extern_prefix}"
7583 #define EXTERN_ASM ${extern_prefix}
7584 #define BUILDSUF "$build_suffix"
7585 #define SLIBSUF "$SLIBSUF"
7586 #define HAVE_MMX2 HAVE_MMXEXT
7587 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7588 EOF
7589
7590 test -n "$assert_level" &&
7591     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7592
7593 test -n "$malloc_prefix" &&
7594     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7595
7596 if enabled x86asm; then
7597     append config_files $TMPASM
7598     cat > $TMPASM <<EOF
7599 ; Automatically generated by configure - do not modify!
7600 EOF
7601 fi
7602
7603 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7604
7605
7606 mkdir -p doc
7607 mkdir -p tests
7608 mkdir -p tests/api
7609 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7610
7611 print_config ARCH_   "$config_files" $ARCH_LIST
7612 print_config HAVE_   "$config_files" $HAVE_LIST
7613 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7614                                      $CONFIG_EXTRA      \
7615                                      $ALL_COMPONENTS    \
7616
7617 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7618 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7619
7620 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7621 cp_if_changed $TMPH config.h
7622 touch ffbuild/.config
7623
7624 enabled x86asm && cp_if_changed $TMPASM config.asm
7625
7626 cat > $TMPH <<EOF
7627 /* Generated by ffmpeg configure */
7628 #ifndef AVUTIL_AVCONFIG_H
7629 #define AVUTIL_AVCONFIG_H
7630 EOF
7631
7632 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7633
7634 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7635
7636 cp_if_changed $TMPH libavutil/avconfig.h
7637
7638 # full_filter_name_foo=vf_foo
7639 # full_filter_name_bar=asrc_bar
7640 # ...
7641 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7642
7643 # generate the lists of enabled components
7644 print_enabled_components(){
7645     file=$1
7646     struct_name=$2
7647     name=$3
7648     shift 3
7649     echo "static const $struct_name * const $name[] = {" > $TMPH
7650     for c in $*; do
7651         if enabled $c; then
7652             case $name in
7653                 filter_list)
7654                     eval c=\$full_filter_name_${c%_filter}
7655                 ;;
7656                 indev_list)
7657                     c=${c%_indev}_demuxer
7658                 ;;
7659                 outdev_list)
7660                     c=${c%_outdev}_muxer
7661                 ;;
7662             esac
7663             printf "    &ff_%s,\n" $c >> $TMPH
7664         fi
7665     done
7666     if [ "$name" = "filter_list" ]; then
7667         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7668             printf "    &ff_%s,\n" $c >> $TMPH
7669         done
7670     fi
7671     echo "    NULL };" >> $TMPH
7672     cp_if_changed $TMPH $file
7673 }
7674
7675 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7676 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7677 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7678 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7679 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7680 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7681 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7682 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7683 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7684
7685 # Settings for pkg-config files
7686
7687 cat > $TMPH <<EOF
7688 # Automatically generated by configure - do not modify!
7689 shared=$shared
7690 build_suffix=$build_suffix
7691 prefix=$prefix
7692 libdir=$libdir
7693 incdir=$incdir
7694 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7695 source_path=${source_path}
7696 LIBPREF=${LIBPREF}
7697 LIBSUF=${LIBSUF}
7698 extralibs_avutil="$avutil_extralibs"
7699 extralibs_avcodec="$avcodec_extralibs"
7700 extralibs_avformat="$avformat_extralibs"
7701 extralibs_avdevice="$avdevice_extralibs"
7702 extralibs_avfilter="$avfilter_extralibs"
7703 extralibs_avresample="$avresample_extralibs"
7704 extralibs_postproc="$postproc_extralibs"
7705 extralibs_swscale="$swscale_extralibs"
7706 extralibs_swresample="$swresample_extralibs"
7707 EOF
7708
7709 for lib in $LIBRARY_LIST; do
7710     lib_deps="$(eval echo \$${lib}_deps)"
7711     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7712 done
7713
7714 cp_if_changed $TMPH ffbuild/config.sh