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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-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-libopus         enable Opus de/encoding via libopus [no]
 257   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 258   --enable-librabbitmq     enable RabbitMQ library [no]
 259   --enable-librav1e        enable AV1 encoding via rav1e [no]
 260   --enable-librsvg         enable SVG rasterization via librsvg [no]
 261   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 262   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 263   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 264   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 265   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 266   --enable-libsoxr         enable Include libsoxr resampling [no]
 267   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 268   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 269   --enable-libssh          enable SFTP protocol via libssh [no]
 270   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 271                            for DNN based filters like sr [no]
 272   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 273   --enable-libtheora       enable Theora encoding via libtheora [no]
 274   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 275                            if openssl, gnutls or mbedtls is not used [no]
 276   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 277   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 278   --enable-libvidstab      enable video stabilization using vid.stab [no]
 279   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 280   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 281   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 282                            native implementation exists [no]
 283   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 284   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 285   --enable-libwebp         enable WebP encoding via libwebp [no]
 286   --enable-libx264         enable H.264 encoding via x264 [no]
 287   --enable-libx265         enable HEVC encoding via x265 [no]
 288   --enable-libxavs         enable AVS encoding via xavs [no]
 289   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 290   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 291   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 292   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 293   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 294   --enable-libxvid         enable Xvid encoding via xvidcore,
 295                            native MPEG-4/Xvid encoder exists [no]
 296   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 297                            for dash demuxing support [no]
 298   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 299   --enable-libzmq          enable message passing via libzmq [no]
 300   --enable-libzvbi         enable teletext support via libzvbi [no]
 301   --enable-lv2             enable LV2 audio filtering [no]
 302   --disable-lzma           disable lzma [autodetect]
 303   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 304   --enable-mbedtls         enable mbedTLS, needed for https support
 305                            if openssl, gnutls or libtls is not used [no]
 306   --enable-mediacodec      enable Android MediaCodec support [no]
 307   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 308   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 309   --enable-openal          enable OpenAL 1.1 capture support [no]
 310   --enable-opencl          enable OpenCL processing [no]
 311   --enable-opengl          enable OpenGL rendering [no]
 312   --enable-openssl         enable openssl, needed for https support
 313                            if gnutls, libtls or mbedtls is not used [no]
 314   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 315   --disable-sndio          disable sndio support [autodetect]
 316   --disable-schannel       disable SChannel SSP, needed for TLS support on
 317                            Windows if openssl and gnutls are not used [autodetect]
 318   --disable-sdl2           disable sdl2 [autodetect]
 319   --disable-securetransport disable Secure Transport, needed for TLS support
 320                            on OSX if openssl and gnutls are not used [autodetect]
 321   --enable-vapoursynth     enable VapourSynth demuxer [no]
 322   --enable-vulkan          enable Vulkan code [no]
 323   --disable-xlib           disable xlib [autodetect]
 324   --disable-zlib           disable zlib [autodetect]
 325
 326   The following libraries provide various hardware acceleration features:
 327   --disable-amf            disable AMF video encoding code [autodetect]
 328   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 329   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 330   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 331   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 332   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 333   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 334   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 335   --enable-libdrm          enable DRM code (Linux) [no]
 336   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 337   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 338   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 339   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 340   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 341   --enable-omx             enable OpenMAX IL code [no]
 342   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 343   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 344   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 345   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 346   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 347   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 348
 349 Toolchain options:
 350   --arch=ARCH              select architecture [$arch]
 351   --cpu=CPU                select the minimum required CPU (affects
 352                            instruction selection, may crash on older CPUs)
 353   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 354   --progs-suffix=SUFFIX    program name suffix []
 355   --enable-cross-compile   assume a cross-compiler is used
 356   --sysroot=PATH           root of cross-build tree
 357   --sysinclude=PATH        location of cross-build system headers
 358   --target-os=OS           compiler targets OS [$target_os]
 359   --target-exec=CMD        command to run executables on target
 360   --target-path=DIR        path to view of build directory on target
 361   --target-samples=DIR     path to samples directory on target
 362   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 363   --toolchain=NAME         set tool defaults according to NAME
 364                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 365                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 366                            valgrind-massif, valgrind-memcheck,
 367                            msvc, icl, gcov, llvm-cov, hardened)
 368   --nm=NM                  use nm tool NM [$nm_default]
 369   --ar=AR                  use archive tool AR [$ar_default]
 370   --as=AS                  use assembler AS [$as_default]
 371   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 372   --strip=STRIP            use strip tool STRIP [$strip_default]
 373   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 374   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 375   --cc=CC                  use C compiler CC [$cc_default]
 376   --cxx=CXX                use C compiler CXX [$cxx_default]
 377   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 378   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 379   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 380   --ld=LD                  use linker LD [$ld_default]
 381   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 382   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 383   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 384   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 385   --host-cc=HOSTCC         use host C compiler HOSTCC
 386   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 387   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 388   --host-ld=HOSTLD         use host linker HOSTLD
 389   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 390   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 391   --host-os=OS             compiler host OS [$target_os]
 392   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 393   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 394   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 395   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 396   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 397   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 398   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 399   --extra-version=STRING   version string suffix []
 400   --optflags=OPTFLAGS      override optimization-related compiler flags
 401   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 402   --build-suffix=SUFFIX    library name suffix []
 403   --enable-pic             build position-independent code
 404   --enable-thumb           compile for Thumb instruction set
 405   --enable-lto             use link-time optimization
 406   --env="ENV=override"     override the environment variables
 407
 408 Advanced options (experts only):
 409   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 410   --custom-allocator=NAME  use a supported custom allocator
 411   --disable-symver         disable symbol versioning
 412   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 413   --disable-safe-bitstream-reader
 414                            disable buffer boundary checking in bitreaders
 415                            (faster, but may crash)
 416   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 417
 418 Optimization options (experts only):
 419   --disable-asm            disable all assembly optimizations
 420   --disable-altivec        disable AltiVec optimizations
 421   --disable-vsx            disable VSX optimizations
 422   --disable-power8         disable POWER8 optimizations
 423   --disable-amd3dnow       disable 3DNow! optimizations
 424   --disable-amd3dnowext    disable 3DNow! extended optimizations
 425   --disable-mmx            disable MMX optimizations
 426   --disable-mmxext         disable MMXEXT optimizations
 427   --disable-sse            disable SSE optimizations
 428   --disable-sse2           disable SSE2 optimizations
 429   --disable-sse3           disable SSE3 optimizations
 430   --disable-ssse3          disable SSSE3 optimizations
 431   --disable-sse4           disable SSE4 optimizations
 432   --disable-sse42          disable SSE4.2 optimizations
 433   --disable-avx            disable AVX optimizations
 434   --disable-xop            disable XOP optimizations
 435   --disable-fma3           disable FMA3 optimizations
 436   --disable-fma4           disable FMA4 optimizations
 437   --disable-avx2           disable AVX2 optimizations
 438   --disable-avx512         disable AVX-512 optimizations
 439   --disable-aesni          disable AESNI optimizations
 440   --disable-armv5te        disable armv5te optimizations
 441   --disable-armv6          disable armv6 optimizations
 442   --disable-armv6t2        disable armv6t2 optimizations
 443   --disable-vfp            disable VFP optimizations
 444   --disable-neon           disable NEON optimizations
 445   --disable-inline-asm     disable use of inline assembly
 446   --disable-x86asm         disable use of standalone x86 assembly
 447   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 448   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 449   --disable-msa            disable MSA optimizations
 450   --disable-msa2           disable MSA2 optimizations
 451   --disable-mipsfpu        disable floating point MIPS optimizations
 452   --disable-mmi            disable Loongson SIMD optimizations
 453   --disable-fast-unaligned consider unaligned accesses slow
 454
 455 Developer options (useful when working on FFmpeg itself):
 456   --disable-debug          disable debugging symbols
 457   --enable-debug=LEVEL     set the debug level [$debuglevel]
 458   --disable-optimizations  disable compiler optimizations
 459   --enable-extra-warnings  enable more compiler warnings
 460   --disable-stripping      disable stripping of executables and shared libraries
 461   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 462                            2 causes a slowdown at runtime.
 463   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 464   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 465                            leaks and errors, using the specified valgrind binary.
 466                            Cannot be combined with --target-exec
 467   --enable-ftrapv          Trap arithmetic overflows
 468   --samples=PATH           location of test samples for FATE, if not set use
 469                            \$FATE_SAMPLES at make invocation time.
 470   --enable-neon-clobber-test check NEON registers for clobbering (should be
 471                            used only for debugging purposes)
 472   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 473                            should be used only for debugging purposes)
 474   --enable-random          randomly enable/disable components
 475   --disable-random
 476   --enable-random=LIST     randomly enable/disable specific components or
 477   --disable-random=LIST    component groups. LIST is a comma-separated list
 478                            of NAME[:PROB] entries where NAME is a component
 479                            (group) and PROB the probability associated with
 480                            NAME (default 0.5).
 481   --random-seed=VALUE      seed value for --enable/disable-random
 482   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 483                            (only applies to --disable-optimizations builds)
 484   --enable-ossfuzz         Enable building fuzzer tool
 485   --libfuzzer=PATH         path to libfuzzer
 486   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 487                            in the name) of tests whose result is ignored
 488   --enable-linux-perf      enable Linux Performance Monitor API
 489   --disable-large-tests    disable tests that use a large amount of memory
 490
 491 NOTE: Object files are built at the place where configure is launched.
 492 EOF
 493   exit 0
 494 }
 495
 496 if test -t 1 && which tput >/dev/null 2>&1; then
 497     ncolors=$(tput colors)
 498     if test -n "$ncolors" && test $ncolors -ge 8; then
 499         bold_color=$(tput bold)
 500         warn_color=$(tput setaf 3)
 501         error_color=$(tput setaf 1)
 502         reset_color=$(tput sgr0)
 503     fi
 504     # 72 used instead of 80 since that's the default of pr
 505     ncols=$(tput cols)
 506 fi
 507 : ${ncols:=72}
 508
 509 log(){
 510     echo "$@" >> $logfile
 511 }
 512
 513 log_file(){
 514     log BEGIN "$1"
 515     log_file_i=1
 516     while IFS= read -r log_file_line; do
 517         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 518         log_file_i=$(($log_file_i+1))
 519     done < "$1" >> "$logfile"
 520     log END "$1"
 521 }
 522
 523 warn(){
 524     log "WARNING: $*"
 525     WARNINGS="${WARNINGS}WARNING: $*\n"
 526 }
 527
 528 die(){
 529     log "$@"
 530     echo "$error_color$bold_color$@$reset_color"
 531     cat <<EOF
 532
 533 If you think configure made a mistake, make sure you are using the latest
 534 version from Git.  If the latest version fails, report the problem to the
 535 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 536 EOF
 537     if disabled logging; then
 538         cat <<EOF
 539 Rerun configure with logging enabled (do not use --disable-logging), and
 540 include the log this produces with your report.
 541 EOF
 542     else
 543         cat <<EOF
 544 Include the log file "$logfile" produced by configure as this will help
 545 solve the problem.
 546 EOF
 547     fi
 548     exit 1
 549 }
 550
 551 # Avoid locale weirdness, besides we really just want to translate ASCII.
 552 toupper(){
 553     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 554 }
 555
 556 tolower(){
 557     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 558 }
 559
 560 c_escape(){
 561     echo "$*" | sed 's/["\\]/\\\0/g'
 562 }
 563
 564 sh_quote(){
 565     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 566     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 567     echo "$v"
 568 }
 569
 570 cleanws(){
 571     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 572 }
 573
 574 filter(){
 575     pat=$1
 576     shift
 577     for v; do
 578         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 579     done
 580 }
 581
 582 filter_out(){
 583     pat=$1
 584     shift
 585     for v; do
 586         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 587     done
 588 }
 589
 590 map(){
 591     m=$1
 592     shift
 593     for v; do eval $m; done
 594 }
 595
 596 add_suffix(){
 597     suffix=$1
 598     shift
 599     for v; do echo ${v}${suffix}; done
 600 }
 601
 602 remove_suffix(){
 603     suffix=$1
 604     shift
 605     for v; do echo ${v%$suffix}; done
 606 }
 607
 608 set_all(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         eval $var=$value
 613     done
 614 }
 615
 616 set_weak(){
 617     value=$1
 618     shift
 619     for var; do
 620         eval : \${$var:=$value}
 621     done
 622 }
 623
 624 sanitize_var_name(){
 625     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 626 }
 627
 628 set_sanitized(){
 629     var=$1
 630     shift
 631     eval $(sanitize_var_name "$var")='$*'
 632 }
 633
 634 get_sanitized(){
 635     eval echo \$$(sanitize_var_name "$1")
 636 }
 637
 638 pushvar(){
 639     for pvar in $*; do
 640         eval level=\${${pvar}_level:=0}
 641         eval ${pvar}_${level}="\$$pvar"
 642         eval ${pvar}_level=$(($level+1))
 643     done
 644 }
 645
 646 popvar(){
 647     for pvar in $*; do
 648         eval level=\${${pvar}_level:-0}
 649         test $level = 0 && continue
 650         eval level=$(($level-1))
 651         eval $pvar="\${${pvar}_${level}}"
 652         eval ${pvar}_level=$level
 653         eval unset ${pvar}_${level}
 654     done
 655 }
 656
 657 request(){
 658     for var in $*; do
 659         eval ${var}_requested=yes
 660         eval $var=
 661     done
 662 }
 663
 664 warn_if_gets_disabled(){
 665     for var in $*; do
 666         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 667     done
 668 }
 669
 670 enable(){
 671     set_all yes $*
 672 }
 673
 674 disable(){
 675     set_all no $*
 676 }
 677
 678 disable_with_reason(){
 679     disable $1
 680     eval "${1}_disable_reason=\"$2\""
 681     if requested $1; then
 682         die "ERROR: $1 requested, but $2"
 683     fi
 684 }
 685
 686 enable_weak(){
 687     set_weak yes $*
 688 }
 689
 690 disable_weak(){
 691     set_weak no $*
 692 }
 693
 694 enable_sanitized(){
 695     for var; do
 696         enable $(sanitize_var_name $var)
 697     done
 698 }
 699
 700 disable_sanitized(){
 701     for var; do
 702         disable $(sanitize_var_name $var)
 703     done
 704 }
 705
 706 do_enable_deep(){
 707     for var; do
 708         enabled $var && continue
 709         set -- $var
 710         eval enable_deep \$${var}_select
 711         var=$1
 712         eval enable_deep_weak \$${var}_suggest
 713     done
 714 }
 715
 716 enable_deep(){
 717     do_enable_deep $*
 718     enable $*
 719 }
 720
 721 enable_deep_weak(){
 722     for var; do
 723         disabled $var && continue
 724         set -- $var
 725         do_enable_deep $var
 726         var=$1
 727         enable_weak $var
 728     done
 729 }
 730
 731 requested(){
 732     test "${1#!}" = "$1" && op="=" || op="!="
 733     eval test "x\$${1#!}_requested" $op "xyes"
 734 }
 735
 736 enabled(){
 737     test "${1#!}" = "$1" && op="=" || op="!="
 738     eval test "x\$${1#!}" $op "xyes"
 739 }
 740
 741 disabled(){
 742     test "${1#!}" = "$1" && op="=" || op="!="
 743     eval test "x\$${1#!}" $op "xno"
 744 }
 745
 746 enabled_all(){
 747     for opt; do
 748         enabled $opt || return 1
 749     done
 750 }
 751
 752 disabled_all(){
 753     for opt; do
 754         disabled $opt || return 1
 755     done
 756 }
 757
 758 enabled_any(){
 759     for opt; do
 760         enabled $opt && return 0
 761     done
 762 }
 763
 764 disabled_any(){
 765     for opt; do
 766         disabled $opt && return 0
 767     done
 768     return 1
 769 }
 770
 771 set_default(){
 772     for opt; do
 773         eval : \${$opt:=\$${opt}_default}
 774     done
 775 }
 776
 777 is_in(){
 778     value=$1
 779     shift
 780     for var in $*; do
 781         [ $var = $value ] && return 0
 782     done
 783     return 1
 784 }
 785
 786 # The cfg loop is very hot (several thousands iterations), and in bash also
 787 # potentialy quite slow. Try to abort the iterations early, preferably without
 788 # calling functions. 70%+ of the time cfg is already done or without deps.
 789 check_deps(){
 790     for cfg; do
 791         eval [ x\$${cfg}_checking = xdone ] && continue
 792         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 793
 794         eval "
 795         dep_all=\$${cfg}_deps
 796         dep_any=\$${cfg}_deps_any
 797         dep_con=\$${cfg}_conflict
 798         dep_sel=\$${cfg}_select
 799         dep_sgs=\$${cfg}_suggest
 800         dep_ifa=\$${cfg}_if
 801         dep_ifn=\$${cfg}_if_any
 802         "
 803
 804         # most of the time here $cfg has no deps - avoid costly no-op work
 805         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 806             eval ${cfg}_checking=inprogress
 807
 808             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 809             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 810             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 811
 812             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 813             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 814             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 815             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 816             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 817             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 818
 819             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 820
 821             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 822                 # filter out library deps, these do not belong in extralibs
 823                 is_in $dep $LIBRARY_LIST && continue
 824                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 825             done
 826         fi
 827
 828         eval ${cfg}_checking=done
 829     done
 830 }
 831
 832 print_config(){
 833     pfx=$1
 834     files=$2
 835     shift 2
 836     map 'eval echo "$v \${$v:-no}"' "$@" |
 837     awk "BEGIN { split(\"$files\", files) }
 838         {
 839             c = \"$pfx\" toupper(\$1);
 840             v = \$2;
 841             sub(/yes/, 1, v);
 842             sub(/no/,  0, v);
 843             for (f in files) {
 844                 file = files[f];
 845                 if (file ~ /\\.h\$/) {
 846                     printf(\"#define %s %d\\n\", c, v) >>file;
 847                 } else if (file ~ /\\.asm\$/) {
 848                     printf(\"%%define %s %d\\n\", c, v) >>file;
 849                 } else if (file ~ /\\.mak\$/) {
 850                     n = -v ? \"\" : \"!\";
 851                     printf(\"%s%s=yes\\n\", n, c) >>file;
 852                 } else if (file ~ /\\.texi\$/) {
 853                     pre = -v ? \"\" : \"@c \";
 854                     yesno = \$2;
 855                     c2 = tolower(c);
 856                     gsub(/_/, \"-\", c2);
 857                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 858                 }
 859             }
 860         }"
 861 }
 862
 863 print_enabled(){
 864     suf=$1
 865     shift
 866     for v; do
 867         enabled $v && printf "%s\n" ${v%$suf}
 868     done
 869 }
 870
 871 append(){
 872     var=$1
 873     shift
 874     eval "$var=\"\$$var $*\""
 875 }
 876
 877 prepend(){
 878     var=$1
 879     shift
 880     eval "$var=\"$* \$$var\""
 881 }
 882
 883 reverse () {
 884     eval '
 885         reverse_out=
 886         for v in $'$1'; do
 887             reverse_out="$v $reverse_out"
 888         done
 889         '$1'=$reverse_out
 890     '
 891 }
 892
 893 # keeps the last occurence of each non-unique item
 894 unique(){
 895     unique_out=
 896     eval unique_in=\$$1
 897     reverse unique_in
 898     for v in $unique_in; do
 899         # " $unique_out" +space such that every item is surrounded with spaces
 900         case " $unique_out" in *" $v "*) continue; esac  # already in list
 901         unique_out="$unique_out$v "
 902     done
 903     reverse unique_out
 904     eval $1=\$unique_out
 905 }
 906
 907 resolve(){
 908     resolve_out=
 909     eval resolve_in=\$$1
 910     for v in $resolve_in; do
 911         eval 'resolve_out="$resolve_out$'$v' "'
 912     done
 913     eval $1=\$resolve_out
 914 }
 915
 916 add_cppflags(){
 917     append CPPFLAGS "$@"
 918 }
 919
 920 add_cflags(){
 921     append CFLAGS $($cflags_filter "$@")
 922 }
 923
 924 add_cflags_headers(){
 925     append CFLAGS_HEADERS $($cflags_filter "$@")
 926 }
 927
 928 add_cxxflags(){
 929     append CXXFLAGS $($cflags_filter "$@")
 930 }
 931
 932 add_objcflags(){
 933     append OBJCFLAGS $($objcflags_filter "$@")
 934 }
 935
 936 add_asflags(){
 937     append ASFLAGS $($asflags_filter "$@")
 938 }
 939
 940 add_ldflags(){
 941     append LDFLAGS $($ldflags_filter "$@")
 942 }
 943
 944 add_ldexeflags(){
 945     append LDEXEFLAGS $($ldflags_filter "$@")
 946 }
 947
 948 add_ldsoflags(){
 949     append LDSOFLAGS $($ldflags_filter "$@")
 950 }
 951
 952 add_extralibs(){
 953     prepend extralibs $($ldflags_filter "$@")
 954 }
 955
 956 add_stripflags(){
 957     append ASMSTRIPFLAGS "$@"
 958 }
 959
 960 add_host_cppflags(){
 961     append host_cppflags "$@"
 962 }
 963
 964 add_host_cflags(){
 965     append host_cflags $($host_cflags_filter "$@")
 966 }
 967
 968 add_host_ldflags(){
 969     append host_ldflags $($host_ldflags_filter "$@")
 970 }
 971
 972 add_compat(){
 973     append compat_objs $1
 974     shift
 975     map 'add_cppflags -D$v' "$@"
 976 }
 977
 978 test_cmd(){
 979     log "$@"
 980     "$@" >> $logfile 2>&1
 981 }
 982
 983 test_stat(){
 984     log test_stat "$@"
 985     stat "$1" >> $logfile 2>&1
 986 }
 987
 988 cc_e(){
 989     eval printf '%s\\n' $CC_E
 990 }
 991
 992 cc_o(){
 993     eval printf '%s\\n' $CC_O
 994 }
 995
 996 as_o(){
 997     eval printf '%s\\n' $AS_O
 998 }
 999
1000 x86asm_o(){
1001     eval printf '%s\\n' $X86ASM_O
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 hostcc_e(){
1009     eval printf '%s\\n' $HOSTCC_E
1010 }
1011
1012 hostcc_o(){
1013     eval printf '%s\\n' $HOSTCC_O
1014 }
1015
1016 nvcc_o(){
1017     eval printf '%s\\n' $NVCC_O
1018 }
1019
1020 test_cc(){
1021     log test_cc "$@"
1022     cat > $TMPC
1023     log_file $TMPC
1024     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1025 }
1026
1027 test_cxx(){
1028     log test_cxx "$@"
1029     cat > $TMPCPP
1030     log_file $TMPCPP
1031     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1032 }
1033
1034 test_objcc(){
1035     log test_objcc "$@"
1036     cat > $TMPM
1037     log_file $TMPM
1038     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1039 }
1040
1041 test_nvcc(){
1042     log test_nvcc "$@"
1043     cat > $TMPCU
1044     log_file $TMPCU
1045     tmpcu_=$TMPCU
1046     tmpo_=$TMPO
1047     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1048     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1049 }
1050
1051 check_nvcc() {
1052     log check_nvcc "$@"
1053     name=$1
1054     shift 1
1055     disabled $name && return
1056     disable $name
1057     test_nvcc "$@" <<EOF && enable $name
1058 extern "C" {
1059     __global__ void hello(unsigned char *data) {}
1060 }
1061 EOF
1062 }
1063
1064 test_cpp(){
1065     log test_cpp "$@"
1066     cat > $TMPC
1067     log_file $TMPC
1068     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1069 }
1070
1071 test_as(){
1072     log test_as "$@"
1073     cat > $TMPS
1074     log_file $TMPS
1075     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1076 }
1077
1078 test_x86asm(){
1079     log test_x86asm "$@"
1080     echo "$1" > $TMPASM
1081     log_file $TMPASM
1082     shift
1083     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1084 }
1085
1086 check_cmd(){
1087     log check_cmd "$@"
1088     cmd=$1
1089     disabled $cmd && return
1090     disable $cmd
1091     test_cmd $@ && enable $cmd
1092 }
1093
1094 check_as(){
1095     log check_as "$@"
1096     name=$1
1097     code=$2
1098     shift 2
1099     disable $name
1100     test_as $@ <<EOF && enable $name
1101 $code
1102 EOF
1103 }
1104
1105 check_inline_asm(){
1106     log check_inline_asm "$@"
1107     name="$1"
1108     code="$2"
1109     shift 2
1110     disable $name
1111     test_cc "$@" <<EOF && enable $name
1112 void foo(void){ __asm__ volatile($code); }
1113 EOF
1114 }
1115
1116 check_inline_asm_flags(){
1117     log check_inline_asm_flags "$@"
1118     name="$1"
1119     code="$2"
1120     flags=''
1121     shift 2
1122     while [ "$1" != "" ]; do
1123       append flags $1
1124       shift
1125     done;
1126     disable $name
1127     cat > $TMPC <<EOF
1128 void foo(void){ __asm__ volatile($code); }
1129 EOF
1130     log_file $TMPC
1131     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1132     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1133 }
1134
1135 check_insn(){
1136     log check_insn "$@"
1137     check_inline_asm ${1}_inline "\"$2\""
1138     check_as ${1}_external "$2"
1139 }
1140
1141 check_x86asm(){
1142     log check_x86asm "$@"
1143     name=$1
1144     shift
1145     disable $name
1146     test_x86asm "$@" && enable $name
1147 }
1148
1149 test_ld(){
1150     log test_ld "$@"
1151     type=$1
1152     shift 1
1153     flags=$(filter_out '-l*|*.so' $@)
1154     libs=$(filter '-l*|*.so' $@)
1155     test_$type $($cflags_filter $flags) || return
1156     flags=$($ldflags_filter $flags)
1157     libs=$($ldflags_filter $libs)
1158     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1159 }
1160
1161 check_ld(){
1162     log check_ld "$@"
1163     type=$1
1164     name=$2
1165     shift 2
1166     disable $name
1167     test_ld $type $@ && enable $name
1168 }
1169
1170 print_include(){
1171     hdr=$1
1172     test "${hdr%.h}" = "${hdr}" &&
1173         echo "#include $hdr"    ||
1174         echo "#include <$hdr>"
1175 }
1176
1177 test_code(){
1178     log test_code "$@"
1179     check=$1
1180     headers=$2
1181     code=$3
1182     shift 3
1183     {
1184         for hdr in $headers; do
1185             print_include $hdr
1186         done
1187         echo "int main(void) { $code; return 0; }"
1188     } | test_$check "$@"
1189 }
1190
1191 check_cppflags(){
1192     log check_cppflags "$@"
1193     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1194 #include <stdlib.h>
1195 EOF
1196 }
1197
1198 test_cflags(){
1199     log test_cflags "$@"
1200     set -- $($cflags_filter "$@")
1201     test_cc "$@" <<EOF
1202 int x;
1203 EOF
1204 }
1205
1206 check_cflags(){
1207     log check_cflags "$@"
1208     test_cflags "$@" && add_cflags "$@"
1209 }
1210
1211 check_cxxflags(){
1212     log check_cxxflags "$@"
1213     set -- $($cflags_filter "$@")
1214     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1215 int x;
1216 EOF
1217 }
1218
1219 test_objcflags(){
1220     log test_objcflags "$@"
1221     set -- $($objcflags_filter "$@")
1222     test_objcc "$@" <<EOF
1223 int x;
1224 EOF
1225 }
1226
1227 check_objcflags(){
1228     log check_objcflags "$@"
1229     test_objcflags "$@" && add_objcflags "$@"
1230 }
1231
1232 test_ldflags(){
1233     log test_ldflags "$@"
1234     set -- $($ldflags_filter "$@")
1235     test_ld "cc" "$@" <<EOF
1236 int main(void){ return 0; }
1237 EOF
1238 }
1239
1240 check_ldflags(){
1241     log check_ldflags "$@"
1242     test_ldflags "$@" && add_ldflags "$@"
1243 }
1244
1245 test_stripflags(){
1246     log test_stripflags "$@"
1247     # call test_cc to get a fresh TMPO
1248     test_cc <<EOF
1249 int main(void) { return 0; }
1250 EOF
1251     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1252 }
1253
1254 check_stripflags(){
1255     log check_stripflags "$@"
1256     test_stripflags "$@" && add_stripflags "$@"
1257 }
1258
1259 check_headers(){
1260     log check_headers "$@"
1261     headers=$1
1262     shift
1263     disable_sanitized $headers
1264     {
1265         for hdr in $headers; do
1266             print_include $hdr
1267         done
1268         echo "int x;"
1269     } | test_cpp "$@" && enable_sanitized $headers
1270 }
1271
1272 check_header_objcc(){
1273     log check_header_objcc "$@"
1274     rm -f -- "$TMPO"
1275     header=$1
1276     shift
1277     disable_sanitized $header
1278     {
1279        echo "#include <$header>"
1280        echo "int main(void) { return 0; }"
1281     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1282 }
1283
1284 check_apple_framework(){
1285     log check_apple_framework "$@"
1286     framework="$1"
1287     name="$(tolower $framework)"
1288     header="${framework}/${framework}.h"
1289     disable $name
1290     check_header_objcc $header &&
1291         enable $name && eval ${name}_extralibs='"-framework $framework"'
1292 }
1293
1294 check_func(){
1295     log check_func "$@"
1296     func=$1
1297     shift
1298     disable $func
1299     test_ld "cc" "$@" <<EOF && enable $func
1300 extern int $func();
1301 int main(void){ $func(); }
1302 EOF
1303 }
1304
1305 check_complexfunc(){
1306     log check_complexfunc "$@"
1307     func=$1
1308     narg=$2
1309     shift 2
1310     test $narg = 2 && args="f, g" || args="f * I"
1311     disable $func
1312     test_ld "cc" "$@" <<EOF && enable $func
1313 #include <complex.h>
1314 #include <math.h>
1315 float foo(complex float f, complex float g) { return $func($args); }
1316 int main(void){ return (int) foo; }
1317 EOF
1318 }
1319
1320 check_mathfunc(){
1321     log check_mathfunc "$@"
1322     func=$1
1323     narg=$2
1324     shift 2
1325     test $narg = 2 && args="f, g" || args="f"
1326     disable $func
1327     test_ld "cc" "$@" <<EOF && enable $func
1328 #include <math.h>
1329 float foo(float f, float g) { return $func($args); }
1330 int main(void){ return (int) foo; }
1331 EOF
1332 }
1333
1334 check_func_headers(){
1335     log check_func_headers "$@"
1336     headers=$1
1337     funcs=$2
1338     shift 2
1339     {
1340         for hdr in $headers; do
1341             print_include $hdr
1342         done
1343         echo "#include <stdint.h>"
1344         for func in $funcs; do
1345             echo "long check_$func(void) { return (long) $func; }"
1346         done
1347         echo "int main(void) { int ret = 0;"
1348         # LTO could optimize out the test functions without this
1349         for func in $funcs; do
1350             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1351         done
1352         echo "return ret; }"
1353     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1354 }
1355
1356 check_class_headers_cpp(){
1357     log check_class_headers_cpp "$@"
1358     headers=$1
1359     classes=$2
1360     shift 2
1361     {
1362         for hdr in $headers; do
1363             echo "#include <$hdr>"
1364         done
1365         echo "int main(void) { "
1366         i=1
1367         for class in $classes; do
1368             echo "$class obj$i;"
1369             i=$(expr $i + 1)
1370         done
1371         echo "return 0; }"
1372     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1373 }
1374
1375 test_cpp_condition(){
1376     log test_cpp_condition "$@"
1377     header=$1
1378     condition=$2
1379     shift 2
1380     test_cpp "$@" <<EOF
1381 #include <$header>
1382 #if !($condition)
1383 #error "unsatisfied condition: $condition"
1384 #endif
1385 EOF
1386 }
1387
1388 check_cpp_condition(){
1389     log check_cpp_condition "$@"
1390     name=$1
1391     shift 1
1392     disable $name
1393     test_cpp_condition "$@" && enable $name
1394 }
1395
1396 test_cflags_cc(){
1397     log test_cflags_cc "$@"
1398     flags=$1
1399     header=$2
1400     condition=$3
1401     shift 3
1402     set -- $($cflags_filter "$flags")
1403     test_cc "$@" <<EOF
1404 #include <$header>
1405 #if !($condition)
1406 #error "unsatisfied condition: $condition"
1407 #endif
1408 EOF
1409 }
1410
1411 check_lib(){
1412     log check_lib "$@"
1413     name="$1"
1414     headers="$2"
1415     funcs="$3"
1416     shift 3
1417     disable $name
1418     check_func_headers "$headers" "$funcs" "$@" &&
1419         enable $name && eval ${name}_extralibs="\$@"
1420 }
1421
1422 check_lib_cpp(){
1423     log check_lib_cpp "$@"
1424     name="$1"
1425     headers="$2"
1426     classes="$3"
1427     shift 3
1428     disable $name
1429     check_class_headers_cpp "$headers" "$classes" "$@" &&
1430         enable $name && eval ${name}_extralibs="\$@"
1431 }
1432
1433 test_pkg_config(){
1434     log test_pkg_config "$@"
1435     name="$1"
1436     pkg_version="$2"
1437     pkg="${2%% *}"
1438     headers="$3"
1439     funcs="$4"
1440     shift 4
1441     disable $name
1442     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1443     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1444     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1445     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1446         enable $name &&
1447         set_sanitized "${name}_cflags"    $pkg_cflags &&
1448         set_sanitized "${name}_extralibs" $pkg_libs
1449 }
1450
1451 check_pkg_config(){
1452     log check_pkg_config "$@"
1453     name="$1"
1454     test_pkg_config "$@" &&
1455         eval add_cflags \$${name}_cflags
1456 }
1457
1458 test_exec(){
1459     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1460 }
1461
1462 check_exec_crash(){
1463     log check_exec_crash "$@"
1464     code=$(cat)
1465
1466     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1467     # are safe but may not be available everywhere.  Thus we use
1468     # raise(SIGTERM) instead.  The check is run in a subshell so we
1469     # can redirect the "Terminated" message from the shell.  SIGBUS
1470     # is not defined by standard C so it is used conditionally.
1471
1472     (test_exec "$@") >> $logfile 2>&1 <<EOF
1473 #include <signal.h>
1474 static void sighandler(int sig){
1475     raise(SIGTERM);
1476 }
1477 int foo(void){
1478     $code
1479 }
1480 int (*func_ptr)(void) = foo;
1481 int main(void){
1482     signal(SIGILL, sighandler);
1483     signal(SIGFPE, sighandler);
1484     signal(SIGSEGV, sighandler);
1485 #ifdef SIGBUS
1486     signal(SIGBUS, sighandler);
1487 #endif
1488     return func_ptr();
1489 }
1490 EOF
1491 }
1492
1493 check_type(){
1494     log check_type "$@"
1495     headers=$1
1496     type=$2
1497     shift 2
1498     disable_sanitized "$type"
1499     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1500 }
1501
1502 check_struct(){
1503     log check_struct "$@"
1504     headers=$1
1505     struct=$2
1506     member=$3
1507     shift 3
1508     disable_sanitized "${struct}_${member}"
1509     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1510         enable_sanitized "${struct}_${member}"
1511 }
1512
1513 check_builtin(){
1514     log check_builtin "$@"
1515     name=$1
1516     headers=$2
1517     builtin=$3
1518     shift 3
1519     disable "$name"
1520     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1521 }
1522
1523 check_compile_assert(){
1524     log check_compile_assert "$@"
1525     name=$1
1526     headers=$2
1527     condition=$3
1528     shift 3
1529     disable "$name"
1530     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1531 }
1532
1533 check_cc(){
1534     log check_cc "$@"
1535     name=$1
1536     shift
1537     disable "$name"
1538     test_code cc "$@" && enable "$name"
1539 }
1540
1541 require(){
1542     log require "$@"
1543     name_version="$1"
1544     name="${1%% *}"
1545     shift
1546     check_lib $name "$@" || die "ERROR: $name_version not found"
1547 }
1548
1549 require_cc(){
1550     log require_cc "$@"
1551     name="$1"
1552     check_cc "$@" || die "ERROR: $name failed"
1553 }
1554
1555 require_cpp(){
1556     log require_cpp "$@"
1557     name_version="$1"
1558     name="${1%% *}"
1559     shift
1560     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1561 }
1562
1563 require_headers(){
1564     log require_headers "$@"
1565     headers="$1"
1566     check_headers "$@" || die "ERROR: $headers not found"
1567 }
1568
1569 require_cpp_condition(){
1570     log require_cpp_condition "$@"
1571     condition="$3"
1572     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1573 }
1574
1575 require_pkg_config(){
1576     log require_pkg_config "$@"
1577     pkg_version="$2"
1578     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1579 }
1580
1581 test_host_cc(){
1582     log test_host_cc "$@"
1583     cat > $TMPC
1584     log_file $TMPC
1585     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1586 }
1587
1588 test_host_cpp(){
1589     log test_host_cpp "$@"
1590     cat > $TMPC
1591     log_file $TMPC
1592     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1593 }
1594
1595 check_host_cppflags(){
1596     log check_host_cppflags "$@"
1597     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1598 #include <stdlib.h>
1599 EOF
1600 }
1601
1602 check_host_cflags(){
1603     log check_host_cflags "$@"
1604     set -- $($host_cflags_filter "$@")
1605     test_host_cc "$@" <<EOF && append host_cflags "$@"
1606 int x;
1607 EOF
1608 }
1609
1610 test_host_cpp_condition(){
1611     log test_host_cpp_condition "$@"
1612     header=$1
1613     condition=$2
1614     shift 2
1615     test_host_cpp "$@" <<EOF
1616 #include <$header>
1617 #if !($condition)
1618 #error "unsatisfied condition: $condition"
1619 #endif
1620 EOF
1621 }
1622
1623 check_host_cpp_condition(){
1624     log check_host_cpp_condition "$@"
1625     name=$1
1626     shift 1
1627     disable $name
1628     test_host_cpp_condition "$@" && enable $name
1629 }
1630
1631 cp_if_changed(){
1632     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1633     mkdir -p "$(dirname $2)"
1634     cp -f "$1" "$2"
1635 }
1636
1637 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1638 # system-dependent things.
1639
1640 AVCODEC_COMPONENTS="
1641     bsfs
1642     decoders
1643     encoders
1644     hwaccels
1645     parsers
1646 "
1647
1648 AVDEVICE_COMPONENTS="
1649     indevs
1650     outdevs
1651 "
1652
1653 AVFILTER_COMPONENTS="
1654     filters
1655 "
1656
1657 AVFORMAT_COMPONENTS="
1658     demuxers
1659     muxers
1660     protocols
1661 "
1662
1663 COMPONENT_LIST="
1664     $AVCODEC_COMPONENTS
1665     $AVDEVICE_COMPONENTS
1666     $AVFILTER_COMPONENTS
1667     $AVFORMAT_COMPONENTS
1668 "
1669
1670 EXAMPLE_LIST="
1671     avio_list_dir_example
1672     avio_reading_example
1673     decode_audio_example
1674     decode_video_example
1675     demuxing_decoding_example
1676     encode_audio_example
1677     encode_video_example
1678     extract_mvs_example
1679     filter_audio_example
1680     filtering_audio_example
1681     filtering_video_example
1682     http_multiclient_example
1683     hw_decode_example
1684     metadata_example
1685     muxing_example
1686     qsvdec_example
1687     remuxing_example
1688     resampling_audio_example
1689     scaling_video_example
1690     transcode_aac_example
1691     transcoding_example
1692     vaapi_encode_example
1693     vaapi_transcode_example
1694 "
1695
1696 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1697     alsa
1698     appkit
1699     avfoundation
1700     bzlib
1701     coreimage
1702     iconv
1703     libxcb
1704     libxcb_shm
1705     libxcb_shape
1706     libxcb_xfixes
1707     lzma
1708     mediafoundation
1709     schannel
1710     sdl2
1711     securetransport
1712     sndio
1713     xlib
1714     zlib
1715 "
1716
1717 EXTERNAL_LIBRARY_GPL_LIST="
1718     avisynth
1719     frei0r
1720     libcdio
1721     libdavs2
1722     librubberband
1723     libvidstab
1724     libx264
1725     libx265
1726     libxavs
1727     libxavs2
1728     libxvid
1729 "
1730
1731 EXTERNAL_LIBRARY_NONFREE_LIST="
1732     decklink
1733     libfdk_aac
1734     openssl
1735     libtls
1736 "
1737
1738 EXTERNAL_LIBRARY_VERSION3_LIST="
1739     gmp
1740     libaribb24
1741     liblensfun
1742     libopencore_amrnb
1743     libopencore_amrwb
1744     libvmaf
1745     libvo_amrwbenc
1746     mbedtls
1747     rkmpp
1748 "
1749
1750 EXTERNAL_LIBRARY_GPLV3_LIST="
1751     libsmbclient
1752 "
1753
1754 EXTERNAL_LIBRARY_LIST="
1755     $EXTERNAL_LIBRARY_GPL_LIST
1756     $EXTERNAL_LIBRARY_NONFREE_LIST
1757     $EXTERNAL_LIBRARY_VERSION3_LIST
1758     $EXTERNAL_LIBRARY_GPLV3_LIST
1759     chromaprint
1760     gcrypt
1761     gnutls
1762     jni
1763     ladspa
1764     libaom
1765     libass
1766     libbluray
1767     libbs2b
1768     libcaca
1769     libcelt
1770     libcodec2
1771     libdav1d
1772     libdc1394
1773     libdrm
1774     libflite
1775     libfontconfig
1776     libfreetype
1777     libfribidi
1778     libglslang
1779     libgme
1780     libgsm
1781     libiec61883
1782     libilbc
1783     libjack
1784     libklvanc
1785     libkvazaar
1786     libmodplug
1787     libmp3lame
1788     libmysofa
1789     libopencv
1790     libopenh264
1791     libopenjpeg
1792     libopenmpt
1793     libopus
1794     libpulse
1795     librabbitmq
1796     librav1e
1797     librsvg
1798     librtmp
1799     libshine
1800     libsmbclient
1801     libsnappy
1802     libsoxr
1803     libspeex
1804     libsrt
1805     libssh
1806     libtensorflow
1807     libtesseract
1808     libtheora
1809     libtwolame
1810     libv4l2
1811     libvorbis
1812     libvpx
1813     libwavpack
1814     libwebp
1815     libxml2
1816     libzimg
1817     libzmq
1818     libzvbi
1819     lv2
1820     mediacodec
1821     openal
1822     opengl
1823     pocketsphinx
1824     vapoursynth
1825 "
1826
1827 HWACCEL_AUTODETECT_LIBRARY_LIST="
1828     amf
1829     audiotoolbox
1830     crystalhd
1831     cuda
1832     cuda_llvm
1833     cuvid
1834     d3d11va
1835     dxva2
1836     ffnvcodec
1837     nvdec
1838     nvenc
1839     vaapi
1840     vdpau
1841     videotoolbox
1842     v4l2_m2m
1843     xvmc
1844 "
1845
1846 # catchall list of things that require external libs to link
1847 EXTRALIBS_LIST="
1848     cpu_init
1849     cws2fws
1850 "
1851
1852 HWACCEL_LIBRARY_NONFREE_LIST="
1853     cuda_nvcc
1854     cuda_sdk
1855     libnpp
1856 "
1857
1858 HWACCEL_LIBRARY_LIST="
1859     $HWACCEL_LIBRARY_NONFREE_LIST
1860     libmfx
1861     mmal
1862     omx
1863     opencl
1864     vulkan
1865 "
1866
1867 DOCUMENT_LIST="
1868     doc
1869     htmlpages
1870     manpages
1871     podpages
1872     txtpages
1873 "
1874
1875 FEATURE_LIST="
1876     ftrapv
1877     gray
1878     hardcoded_tables
1879     omx_rpi
1880     runtime_cpudetect
1881     safe_bitstream_reader
1882     shared
1883     small
1884     static
1885     swscale_alpha
1886 "
1887
1888 # this list should be kept in linking order
1889 LIBRARY_LIST="
1890     avdevice
1891     avfilter
1892     swscale
1893     postproc
1894     avformat
1895     avcodec
1896     swresample
1897     avresample
1898     avutil
1899 "
1900
1901 LICENSE_LIST="
1902     gpl
1903     nonfree
1904     version3
1905 "
1906
1907 PROGRAM_LIST="
1908     ffplay
1909     ffprobe
1910     ffmpeg
1911 "
1912
1913 SUBSYSTEM_LIST="
1914     dct
1915     dwt
1916     error_resilience
1917     faan
1918     fast_unaligned
1919     fft
1920     lsp
1921     lzo
1922     mdct
1923     pixelutils
1924     network
1925     rdft
1926 "
1927
1928 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1929 CONFIG_LIST="
1930     $DOCUMENT_LIST
1931     $EXAMPLE_LIST
1932     $EXTERNAL_LIBRARY_LIST
1933     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1934     $HWACCEL_LIBRARY_LIST
1935     $HWACCEL_AUTODETECT_LIBRARY_LIST
1936     $FEATURE_LIST
1937     $LICENSE_LIST
1938     $LIBRARY_LIST
1939     $PROGRAM_LIST
1940     $SUBSYSTEM_LIST
1941     autodetect
1942     fontconfig
1943     large_tests
1944     linux_perf
1945     memory_poisoning
1946     neon_clobber_test
1947     ossfuzz
1948     pic
1949     thumb
1950     valgrind_backtrace
1951     xmm_clobber_test
1952     $COMPONENT_LIST
1953 "
1954
1955 THREADS_LIST="
1956     pthreads
1957     os2threads
1958     w32threads
1959 "
1960
1961 ATOMICS_LIST="
1962     atomics_gcc
1963     atomics_suncc
1964     atomics_win32
1965 "
1966
1967 AUTODETECT_LIBS="
1968     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1969     $HWACCEL_AUTODETECT_LIBRARY_LIST
1970     $THREADS_LIST
1971 "
1972
1973 ARCH_LIST="
1974     aarch64
1975     alpha
1976     arm
1977     avr32
1978     avr32_ap
1979     avr32_uc
1980     bfin
1981     ia64
1982     m68k
1983     mips
1984     mips64
1985     parisc
1986     ppc
1987     ppc64
1988     s390
1989     sh4
1990     sparc
1991     sparc64
1992     tilegx
1993     tilepro
1994     tomi
1995     x86
1996     x86_32
1997     x86_64
1998 "
1999
2000 ARCH_EXT_LIST_ARM="
2001     armv5te
2002     armv6
2003     armv6t2
2004     armv8
2005     neon
2006     vfp
2007     vfpv3
2008     setend
2009 "
2010
2011 ARCH_EXT_LIST_MIPS="
2012     mipsfpu
2013     mips32r2
2014     mips32r5
2015     mips64r2
2016     mips32r6
2017     mips64r6
2018     mipsdsp
2019     mipsdspr2
2020     msa
2021     msa2
2022 "
2023
2024 ARCH_EXT_LIST_LOONGSON="
2025     loongson2
2026     loongson3
2027     mmi
2028 "
2029
2030 ARCH_EXT_LIST_X86_SIMD="
2031     aesni
2032     amd3dnow
2033     amd3dnowext
2034     avx
2035     avx2
2036     avx512
2037     fma3
2038     fma4
2039     mmx
2040     mmxext
2041     sse
2042     sse2
2043     sse3
2044     sse4
2045     sse42
2046     ssse3
2047     xop
2048 "
2049
2050 ARCH_EXT_LIST_PPC="
2051     altivec
2052     dcbzl
2053     ldbrx
2054     power8
2055     ppc4xx
2056     vsx
2057 "
2058
2059 ARCH_EXT_LIST_X86="
2060     $ARCH_EXT_LIST_X86_SIMD
2061     cpunop
2062     i686
2063 "
2064
2065 ARCH_EXT_LIST="
2066     $ARCH_EXT_LIST_ARM
2067     $ARCH_EXT_LIST_PPC
2068     $ARCH_EXT_LIST_X86
2069     $ARCH_EXT_LIST_MIPS
2070     $ARCH_EXT_LIST_LOONGSON
2071 "
2072
2073 ARCH_FEATURES="
2074     aligned_stack
2075     fast_64bit
2076     fast_clz
2077     fast_cmov
2078     local_aligned
2079     simd_align_16
2080     simd_align_32
2081     simd_align_64
2082 "
2083
2084 BUILTIN_LIST="
2085     atomic_cas_ptr
2086     machine_rw_barrier
2087     MemoryBarrier
2088     mm_empty
2089     rdtsc
2090     sem_timedwait
2091     sync_val_compare_and_swap
2092 "
2093 HAVE_LIST_CMDLINE="
2094     inline_asm
2095     symver
2096     x86asm
2097 "
2098
2099 HAVE_LIST_PUB="
2100     bigendian
2101     fast_unaligned
2102 "
2103
2104 HEADERS_LIST="
2105     arpa_inet_h
2106     asm_types_h
2107     cdio_paranoia_h
2108     cdio_paranoia_paranoia_h
2109     cuda_h
2110     dispatch_dispatch_h
2111     dev_bktr_ioctl_bt848_h
2112     dev_bktr_ioctl_meteor_h
2113     dev_ic_bt8xx_h
2114     dev_video_bktr_ioctl_bt848_h
2115     dev_video_meteor_ioctl_meteor_h
2116     direct_h
2117     dirent_h
2118     dxgidebug_h
2119     dxva_h
2120     ES2_gl_h
2121     gsm_h
2122     io_h
2123     linux_perf_event_h
2124     machine_ioctl_bt848_h
2125     machine_ioctl_meteor_h
2126     malloc_h
2127     opencv2_core_core_c_h
2128     OpenGL_gl3_h
2129     poll_h
2130     sys_param_h
2131     sys_resource_h
2132     sys_select_h
2133     sys_soundcard_h
2134     sys_time_h
2135     sys_un_h
2136     sys_videoio_h
2137     termios_h
2138     udplite_h
2139     unistd_h
2140     valgrind_valgrind_h
2141     windows_h
2142     winsock2_h
2143 "
2144
2145 INTRINSICS_LIST="
2146     intrinsics_neon
2147 "
2148
2149 COMPLEX_FUNCS="
2150     cabs
2151     cexp
2152 "
2153
2154 MATH_FUNCS="
2155     atanf
2156     atan2f
2157     cbrt
2158     cbrtf
2159     copysign
2160     cosf
2161     erf
2162     exp2
2163     exp2f
2164     expf
2165     hypot
2166     isfinite
2167     isinf
2168     isnan
2169     ldexpf
2170     llrint
2171     llrintf
2172     log2
2173     log2f
2174     log10f
2175     lrint
2176     lrintf
2177     powf
2178     rint
2179     round
2180     roundf
2181     sinf
2182     trunc
2183     truncf
2184 "
2185
2186 SYSTEM_FEATURES="
2187     dos_paths
2188     libc_msvcrt
2189     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2190     section_data_rel_ro
2191     threads
2192     uwp
2193     winrt
2194 "
2195
2196 SYSTEM_FUNCS="
2197     access
2198     aligned_malloc
2199     arc4random
2200     clock_gettime
2201     closesocket
2202     CommandLineToArgvW
2203     fcntl
2204     getaddrinfo
2205     gethrtime
2206     getopt
2207     GetModuleHandle
2208     GetProcessAffinityMask
2209     GetProcessMemoryInfo
2210     GetProcessTimes
2211     getrusage
2212     GetStdHandle
2213     GetSystemTimeAsFileTime
2214     gettimeofday
2215     glob
2216     glXGetProcAddress
2217     gmtime_r
2218     inet_aton
2219     isatty
2220     kbhit
2221     localtime_r
2222     lstat
2223     lzo1x_999_compress
2224     mach_absolute_time
2225     MapViewOfFile
2226     memalign
2227     mkstemp
2228     mmap
2229     mprotect
2230     nanosleep
2231     PeekNamedPipe
2232     posix_memalign
2233     pthread_cancel
2234     sched_getaffinity
2235     SecItemImport
2236     SetConsoleTextAttribute
2237     SetConsoleCtrlHandler
2238     SetDllDirectory
2239     setmode
2240     setrlimit
2241     Sleep
2242     strerror_r
2243     sysconf
2244     sysctl
2245     usleep
2246     UTGetOSTypeFromString
2247     VirtualAlloc
2248     wglGetProcAddress
2249 "
2250
2251 SYSTEM_LIBRARIES="
2252     bcrypt
2253     vaapi_drm
2254     vaapi_x11
2255     vdpau_x11
2256 "
2257
2258 TOOLCHAIN_FEATURES="
2259     as_arch_directive
2260     as_dn_directive
2261     as_fpu_directive
2262     as_func
2263     as_object_arch
2264     asm_mod_q
2265     blocks_extension
2266     ebp_available
2267     ebx_available
2268     gnu_as
2269     gnu_windres
2270     ibm_asm
2271     inline_asm_direct_symbol_refs
2272     inline_asm_labels
2273     inline_asm_nonlocal_labels
2274     pragma_deprecated
2275     rsync_contimeout
2276     symver_asm_label
2277     symver_gnu_asm
2278     vfp_args
2279     xform_asm
2280     xmm_clobbers
2281 "
2282
2283 TYPES_LIST="
2284     kCMVideoCodecType_HEVC
2285     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2286     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2287     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2288     kCVImageBufferTransferFunction_Linear
2289     socklen_t
2290     struct_addrinfo
2291     struct_group_source_req
2292     struct_ip_mreq_source
2293     struct_ipv6_mreq
2294     struct_msghdr_msg_flags
2295     struct_pollfd
2296     struct_rusage_ru_maxrss
2297     struct_sctp_event_subscribe
2298     struct_sockaddr_in6
2299     struct_sockaddr_sa_len
2300     struct_sockaddr_storage
2301     struct_stat_st_mtim_tv_nsec
2302     struct_v4l2_frmivalenum_discrete
2303 "
2304
2305 HAVE_LIST="
2306     $ARCH_EXT_LIST
2307     $(add_suffix _external $ARCH_EXT_LIST)
2308     $(add_suffix _inline   $ARCH_EXT_LIST)
2309     $ARCH_FEATURES
2310     $BUILTIN_LIST
2311     $COMPLEX_FUNCS
2312     $HAVE_LIST_CMDLINE
2313     $HAVE_LIST_PUB
2314     $HEADERS_LIST
2315     $INTRINSICS_LIST
2316     $MATH_FUNCS
2317     $SYSTEM_FEATURES
2318     $SYSTEM_FUNCS
2319     $SYSTEM_LIBRARIES
2320     $THREADS_LIST
2321     $TOOLCHAIN_FEATURES
2322     $TYPES_LIST
2323     makeinfo
2324     makeinfo_html
2325     opencl_d3d11
2326     opencl_drm_arm
2327     opencl_drm_beignet
2328     opencl_dxva2
2329     opencl_vaapi_beignet
2330     opencl_vaapi_intel_media
2331     perl
2332     pod2man
2333     texi2html
2334 "
2335
2336 # options emitted with CONFIG_ prefix but not available on the command line
2337 CONFIG_EXTRA="
2338     aandcttables
2339     ac3dsp
2340     adts_header
2341     audio_frame_queue
2342     audiodsp
2343     blockdsp
2344     bswapdsp
2345     cabac
2346     cbs
2347     cbs_av1
2348     cbs_h264
2349     cbs_h265
2350     cbs_jpeg
2351     cbs_mpeg2
2352     cbs_vp9
2353     dirac_parse
2354     dnn
2355     dvprofile
2356     exif
2357     faandct
2358     faanidct
2359     fdctdsp
2360     flacdsp
2361     fmtconvert
2362     frame_thread_encoder
2363     g722dsp
2364     golomb
2365     gplv3
2366     h263dsp
2367     h264chroma
2368     h264dsp
2369     h264parse
2370     h264pred
2371     h264qpel
2372     hevcparse
2373     hpeldsp
2374     huffman
2375     huffyuvdsp
2376     huffyuvencdsp
2377     idctdsp
2378     iirfilter
2379     mdct15
2380     intrax8
2381     iso_media
2382     ividsp
2383     jpegtables
2384     lgplv3
2385     libx262
2386     llauddsp
2387     llviddsp
2388     llvidencdsp
2389     lpc
2390     lzf
2391     me_cmp
2392     mpeg_er
2393     mpegaudio
2394     mpegaudiodsp
2395     mpegaudioheader
2396     mpegvideo
2397     mpegvideoenc
2398     mss34dsp
2399     pixblockdsp
2400     qpeldsp
2401     qsv
2402     qsvdec
2403     qsvenc
2404     qsvvpp
2405     rangecoder
2406     riffdec
2407     riffenc
2408     rtpdec
2409     rtpenc_chain
2410     rv34dsp
2411     scene_sad
2412     sinewin
2413     snappy
2414     srtp
2415     startcode
2416     texturedsp
2417     texturedspenc
2418     tpeldsp
2419     vaapi_1
2420     vaapi_encode
2421     vc1dsp
2422     videodsp
2423     vp3dsp
2424     vp56dsp
2425     vp8dsp
2426     wma_freqs
2427     wmv2dsp
2428 "
2429
2430 CMDLINE_SELECT="
2431     $ARCH_EXT_LIST
2432     $CONFIG_LIST
2433     $HAVE_LIST_CMDLINE
2434     $THREADS_LIST
2435     asm
2436     cross_compile
2437     debug
2438     extra_warnings
2439     logging
2440     lto
2441     optimizations
2442     rpath
2443     stripping
2444 "
2445
2446 PATHS_LIST="
2447     bindir
2448     datadir
2449     docdir
2450     incdir
2451     libdir
2452     mandir
2453     pkgconfigdir
2454     prefix
2455     shlibdir
2456     install_name_dir
2457 "
2458
2459 CMDLINE_SET="
2460     $PATHS_LIST
2461     ar
2462     arch
2463     as
2464     assert_level
2465     build_suffix
2466     cc
2467     objcc
2468     cpu
2469     cross_prefix
2470     custom_allocator
2471     cxx
2472     dep_cc
2473     doxygen
2474     env
2475     extra_version
2476     gas
2477     host_cc
2478     host_cflags
2479     host_extralibs
2480     host_ld
2481     host_ldflags
2482     host_os
2483     ignore_tests
2484     install
2485     ld
2486     ln_s
2487     logfile
2488     malloc_prefix
2489     nm
2490     optflags
2491     nvcc
2492     nvccflags
2493     pkg_config
2494     pkg_config_flags
2495     progs_suffix
2496     random_seed
2497     ranlib
2498     samples
2499     strip
2500     sws_max_filter_size
2501     sysinclude
2502     sysroot
2503     target_exec
2504     target_os
2505     target_path
2506     target_samples
2507     tempprefix
2508     toolchain
2509     valgrind
2510     windres
2511     x86asmexe
2512 "
2513
2514 CMDLINE_APPEND="
2515     extra_cflags
2516     extra_cxxflags
2517     extra_objcflags
2518     host_cppflags
2519 "
2520
2521 # code dependency declarations
2522
2523 # architecture extensions
2524
2525 armv5te_deps="arm"
2526 armv6_deps="arm"
2527 armv6t2_deps="arm"
2528 armv8_deps="aarch64"
2529 neon_deps_any="aarch64 arm"
2530 intrinsics_neon_deps="neon"
2531 vfp_deps_any="aarch64 arm"
2532 vfpv3_deps="vfp"
2533 setend_deps="arm"
2534
2535 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2536
2537 altivec_deps="ppc"
2538 dcbzl_deps="ppc"
2539 ldbrx_deps="ppc"
2540 ppc4xx_deps="ppc"
2541 vsx_deps="altivec"
2542 power8_deps="vsx"
2543
2544 loongson2_deps="mips"
2545 loongson3_deps="mips"
2546 mips32r2_deps="mips"
2547 mips32r5_deps="mips"
2548 mips32r6_deps="mips"
2549 mips64r2_deps="mips"
2550 mips64r6_deps="mips"
2551 mipsfpu_deps="mips"
2552 mipsdsp_deps="mips"
2553 mipsdspr2_deps="mips"
2554 mmi_deps="mips"
2555 msa_deps="mipsfpu"
2556 msa2_deps="msa"
2557
2558 cpunop_deps="i686"
2559 x86_64_select="i686"
2560 x86_64_suggest="fast_cmov"
2561
2562 amd3dnow_deps="mmx"
2563 amd3dnowext_deps="amd3dnow"
2564 i686_deps="x86"
2565 mmx_deps="x86"
2566 mmxext_deps="mmx"
2567 sse_deps="mmxext"
2568 sse2_deps="sse"
2569 sse3_deps="sse2"
2570 ssse3_deps="sse3"
2571 sse4_deps="ssse3"
2572 sse42_deps="sse4"
2573 aesni_deps="sse42"
2574 avx_deps="sse42"
2575 xop_deps="avx"
2576 fma3_deps="avx"
2577 fma4_deps="avx"
2578 avx2_deps="avx"
2579 avx512_deps="avx2"
2580
2581 mmx_external_deps="x86asm"
2582 mmx_inline_deps="inline_asm x86"
2583 mmx_suggest="mmx_external mmx_inline"
2584
2585 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2586     eval dep=\$${ext}_deps
2587     eval ${ext}_external_deps='"${dep}_external"'
2588     eval ${ext}_inline_deps='"${dep}_inline"'
2589     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2590 done
2591
2592 aligned_stack_if_any="aarch64 ppc x86"
2593 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2594 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2595 fast_unaligned_if_any="aarch64 ppc x86"
2596 simd_align_16_if_any="altivec neon sse"
2597 simd_align_32_if_any="avx"
2598 simd_align_64_if_any="avx512"
2599
2600 # system capabilities
2601 linux_perf_deps="linux_perf_event_h"
2602 symver_if_any="symver_asm_label symver_gnu_asm"
2603 valgrind_backtrace_conflict="optimizations"
2604 valgrind_backtrace_deps="valgrind_valgrind_h"
2605
2606 # threading support
2607 atomics_gcc_if="sync_val_compare_and_swap"
2608 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2609 atomics_win32_if="MemoryBarrier"
2610 atomics_native_if_any="$ATOMICS_LIST"
2611 w32threads_deps="atomics_native"
2612 threads_if_any="$THREADS_LIST"
2613
2614 # subsystems
2615 cbs_av1_select="cbs"
2616 cbs_h264_select="cbs"
2617 cbs_h265_select="cbs"
2618 cbs_jpeg_select="cbs"
2619 cbs_mpeg2_select="cbs"
2620 cbs_vp9_select="cbs"
2621 dct_select="rdft"
2622 dirac_parse_select="golomb"
2623 dnn_suggest="libtensorflow"
2624 error_resilience_select="me_cmp"
2625 faandct_deps="faan"
2626 faandct_select="fdctdsp"
2627 faanidct_deps="faan"
2628 faanidct_select="idctdsp"
2629 h264dsp_select="startcode"
2630 hevcparse_select="golomb"
2631 frame_thread_encoder_deps="encoders threads"
2632 intrax8_select="blockdsp idctdsp"
2633 mdct_select="fft"
2634 mdct15_select="fft"
2635 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2636 mpeg_er_select="error_resilience"
2637 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2638 mpegaudiodsp_select="dct"
2639 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2640 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2641 vc1dsp_select="h264chroma qpeldsp startcode"
2642 rdft_select="fft"
2643
2644 # decoders / encoders
2645 aac_decoder_select="adts_header mdct15 mdct sinewin"
2646 aac_fixed_decoder_select="adts_header mdct sinewin"
2647 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2648 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2649 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2650 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2651 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2652 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2653 acelp_kelvin_decoder_select="audiodsp"
2654 adpcm_g722_decoder_select="g722dsp"
2655 adpcm_g722_encoder_select="g722dsp"
2656 aic_decoder_select="golomb idctdsp"
2657 alac_encoder_select="lpc"
2658 als_decoder_select="bswapdsp"
2659 amrnb_decoder_select="lsp"
2660 amrwb_decoder_select="lsp"
2661 amv_decoder_select="sp5x_decoder exif"
2662 amv_encoder_select="jpegtables mpegvideoenc"
2663 ape_decoder_select="bswapdsp llauddsp"
2664 apng_decoder_deps="zlib"
2665 apng_encoder_deps="zlib"
2666 apng_encoder_select="llvidencdsp"
2667 aptx_decoder_select="audio_frame_queue"
2668 aptx_encoder_select="audio_frame_queue"
2669 aptx_hd_decoder_select="audio_frame_queue"
2670 aptx_hd_encoder_select="audio_frame_queue"
2671 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2672 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2673 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2674 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2675 atrac1_decoder_select="mdct sinewin"
2676 atrac3_decoder_select="mdct"
2677 atrac3al_decoder_select="mdct"
2678 atrac3p_decoder_select="mdct sinewin"
2679 atrac3pal_decoder_select="mdct sinewin"
2680 atrac9_decoder_select="mdct"
2681 avrn_decoder_select="exif jpegtables"
2682 bink_decoder_select="blockdsp hpeldsp"
2683 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2684 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2685 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2686 clearvideo_decoder_select="idctdsp"
2687 cllc_decoder_select="bswapdsp"
2688 comfortnoise_encoder_select="lpc"
2689 cook_decoder_select="audiodsp mdct sinewin"
2690 cscd_decoder_select="lzo"
2691 cscd_decoder_suggest="zlib"
2692 dca_decoder_select="mdct"
2693 dca_encoder_select="mdct"
2694 dds_decoder_select="texturedsp"
2695 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2696 dnxhd_decoder_select="blockdsp idctdsp"
2697 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2698 dolby_e_decoder_select="mdct"
2699 dvvideo_decoder_select="dvprofile idctdsp"
2700 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2701 dxa_decoder_deps="zlib"
2702 dxv_decoder_select="lzf texturedsp"
2703 eac3_decoder_select="ac3_decoder"
2704 eac3_encoder_select="ac3_encoder"
2705 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2706 eatgq_decoder_select="aandcttables"
2707 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2708 exr_decoder_deps="zlib"
2709 ffv1_decoder_select="rangecoder"
2710 ffv1_encoder_select="rangecoder"
2711 ffvhuff_decoder_select="huffyuv_decoder"
2712 ffvhuff_encoder_select="huffyuv_encoder"
2713 fic_decoder_select="golomb"
2714 flac_decoder_select="flacdsp"
2715 flac_encoder_select="bswapdsp flacdsp lpc"
2716 flashsv2_decoder_deps="zlib"
2717 flashsv2_encoder_deps="zlib"
2718 flashsv_decoder_deps="zlib"
2719 flashsv_encoder_deps="zlib"
2720 flv_decoder_select="h263_decoder"
2721 flv_encoder_select="h263_encoder"
2722 fourxm_decoder_select="blockdsp bswapdsp"
2723 fraps_decoder_select="bswapdsp huffman"
2724 g2m_decoder_deps="zlib"
2725 g2m_decoder_select="blockdsp idctdsp jpegtables"
2726 g729_decoder_select="audiodsp"
2727 h261_decoder_select="mpegvideo"
2728 h261_encoder_select="mpegvideoenc"
2729 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2730 h263_encoder_select="h263dsp mpegvideoenc"
2731 h263i_decoder_select="h263_decoder"
2732 h263p_decoder_select="h263_decoder"
2733 h263p_encoder_select="h263_encoder"
2734 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2735 h264_decoder_suggest="error_resilience"
2736 hap_decoder_select="snappy texturedsp"
2737 hap_encoder_deps="libsnappy"
2738 hap_encoder_select="texturedspenc"
2739 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2740 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2741 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2742 hymt_decoder_select="huffyuv_decoder"
2743 iac_decoder_select="imc_decoder"
2744 imc_decoder_select="bswapdsp fft mdct sinewin"
2745 imm4_decoder_select="bswapdsp"
2746 imm5_decoder_select="h264_decoder hevc_decoder"
2747 indeo3_decoder_select="hpeldsp"
2748 indeo4_decoder_select="ividsp"
2749 indeo5_decoder_select="ividsp"
2750 interplay_video_decoder_select="hpeldsp"
2751 jpegls_decoder_select="mjpeg_decoder"
2752 jv_decoder_select="blockdsp"
2753 lagarith_decoder_select="llviddsp"
2754 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2755 lscr_decoder_deps="zlib"
2756 magicyuv_decoder_select="llviddsp"
2757 magicyuv_encoder_select="llvidencdsp"
2758 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2759 metasound_decoder_select="lsp mdct sinewin"
2760 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2761 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2762 mjpeg_encoder_select="jpegtables mpegvideoenc"
2763 mjpegb_decoder_select="mjpeg_decoder"
2764 mlp_decoder_select="mlp_parser"
2765 mlp_encoder_select="lpc audio_frame_queue"
2766 motionpixels_decoder_select="bswapdsp"
2767 mp1_decoder_select="mpegaudio"
2768 mp1float_decoder_select="mpegaudio"
2769 mp2_decoder_select="mpegaudio"
2770 mp2float_decoder_select="mpegaudio"
2771 mp3_decoder_select="mpegaudio"
2772 mp3adu_decoder_select="mpegaudio"
2773 mp3adufloat_decoder_select="mpegaudio"
2774 mp3float_decoder_select="mpegaudio"
2775 mp3on4_decoder_select="mpegaudio"
2776 mp3on4float_decoder_select="mpegaudio"
2777 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2778 mpc8_decoder_select="mpegaudiodsp"
2779 mpegvideo_decoder_select="mpegvideo"
2780 mpeg1video_decoder_select="mpegvideo"
2781 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2782 mpeg2video_decoder_select="mpegvideo"
2783 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2784 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2785 mpeg4_encoder_select="h263_encoder"
2786 msa1_decoder_select="mss34dsp"
2787 mscc_decoder_deps="zlib"
2788 msmpeg4v1_decoder_select="h263_decoder"
2789 msmpeg4v2_decoder_select="h263_decoder"
2790 msmpeg4v2_encoder_select="h263_encoder"
2791 msmpeg4v3_decoder_select="h263_decoder"
2792 msmpeg4v3_encoder_select="h263_encoder"
2793 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2794 mts2_decoder_select="mss34dsp"
2795 mv30_decoder_select="aandcttables blockdsp"
2796 mvha_decoder_deps="zlib"
2797 mvha_decoder_select="llviddsp"
2798 mwsc_decoder_deps="zlib"
2799 mxpeg_decoder_select="mjpeg_decoder"
2800 nellymoser_decoder_select="mdct sinewin"
2801 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2802 nuv_decoder_select="idctdsp lzo"
2803 on2avc_decoder_select="mdct"
2804 opus_decoder_deps="swresample"
2805 opus_decoder_select="mdct15"
2806 opus_encoder_select="audio_frame_queue mdct15"
2807 png_decoder_deps="zlib"
2808 png_encoder_deps="zlib"
2809 png_encoder_select="llvidencdsp"
2810 prores_decoder_select="blockdsp idctdsp"
2811 prores_encoder_select="fdctdsp"
2812 qcelp_decoder_select="lsp"
2813 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2814 ra_144_decoder_select="audiodsp"
2815 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2816 ralf_decoder_select="golomb"
2817 rasc_decoder_deps="zlib"
2818 rawvideo_decoder_select="bswapdsp"
2819 rscc_decoder_deps="zlib"
2820 rtjpeg_decoder_select="me_cmp"
2821 rv10_decoder_select="h263_decoder"
2822 rv10_encoder_select="h263_encoder"
2823 rv20_decoder_select="h263_decoder"
2824 rv20_encoder_select="h263_encoder"
2825 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2826 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2827 screenpresso_decoder_deps="zlib"
2828 shorten_decoder_select="bswapdsp"
2829 sipr_decoder_select="lsp"
2830 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2831 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2832 sonic_decoder_select="golomb rangecoder"
2833 sonic_encoder_select="golomb rangecoder"
2834 sonic_ls_encoder_select="golomb rangecoder"
2835 sp5x_decoder_select="mjpeg_decoder"
2836 speedhq_decoder_select="mpegvideo"
2837 srgc_decoder_deps="zlib"
2838 svq1_decoder_select="hpeldsp"
2839 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2840 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2841 svq3_decoder_suggest="zlib"
2842 tak_decoder_select="audiodsp"
2843 tdsc_decoder_deps="zlib"
2844 tdsc_decoder_select="mjpeg_decoder"
2845 theora_decoder_select="vp3_decoder"
2846 thp_decoder_select="mjpeg_decoder"
2847 tiff_decoder_select="mjpeg_decoder"
2848 tiff_decoder_suggest="zlib lzma"
2849 tiff_encoder_suggest="zlib"
2850 truehd_decoder_select="mlp_parser"
2851 truehd_encoder_select="lpc audio_frame_queue"
2852 truemotion2_decoder_select="bswapdsp"
2853 truespeech_decoder_select="bswapdsp"
2854 tscc_decoder_deps="zlib"
2855 twinvq_decoder_select="mdct lsp sinewin"
2856 txd_decoder_select="texturedsp"
2857 utvideo_decoder_select="bswapdsp llviddsp"
2858 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2859 vble_decoder_select="llviddsp"
2860 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2861 vc1image_decoder_select="vc1_decoder"
2862 vorbis_decoder_select="mdct"
2863 vorbis_encoder_select="audio_frame_queue mdct"
2864 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2865 vp4_decoder_select="vp3_decoder"
2866 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2867 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2868 vp6a_decoder_select="vp6_decoder"
2869 vp6f_decoder_select="vp6_decoder"
2870 vp7_decoder_select="h264pred videodsp vp8dsp"
2871 vp8_decoder_select="h264pred videodsp vp8dsp"
2872 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2873 wcmv_decoder_deps="zlib"
2874 webp_decoder_select="vp8_decoder exif"
2875 wmalossless_decoder_select="llauddsp"
2876 wmapro_decoder_select="mdct sinewin wma_freqs"
2877 wmav1_decoder_select="mdct sinewin wma_freqs"
2878 wmav1_encoder_select="mdct sinewin wma_freqs"
2879 wmav2_decoder_select="mdct sinewin wma_freqs"
2880 wmav2_encoder_select="mdct sinewin wma_freqs"
2881 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2882 wmv1_decoder_select="h263_decoder"
2883 wmv1_encoder_select="h263_encoder"
2884 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2885 wmv2_encoder_select="h263_encoder wmv2dsp"
2886 wmv3_decoder_select="vc1_decoder"
2887 wmv3image_decoder_select="wmv3_decoder"
2888 xma1_decoder_select="wmapro_decoder"
2889 xma2_decoder_select="wmapro_decoder"
2890 ylc_decoder_select="bswapdsp"
2891 zerocodec_decoder_deps="zlib"
2892 zlib_decoder_deps="zlib"
2893 zlib_encoder_deps="zlib"
2894 zmbv_decoder_deps="zlib"
2895 zmbv_encoder_deps="zlib"
2896
2897 # hardware accelerators
2898 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2899 cuda_deps="ffnvcodec"
2900 cuvid_deps="ffnvcodec"
2901 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2902 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2903 ffnvcodec_deps_any="libdl LoadLibrary"
2904 nvdec_deps="ffnvcodec"
2905 vaapi_x11_deps="xlib"
2906 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2907 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2908 xvmc_deps="X11_extensions_XvMClib_h"
2909
2910 h263_vaapi_hwaccel_deps="vaapi"
2911 h263_vaapi_hwaccel_select="h263_decoder"
2912 h263_videotoolbox_hwaccel_deps="videotoolbox"
2913 h263_videotoolbox_hwaccel_select="h263_decoder"
2914 h264_d3d11va_hwaccel_deps="d3d11va"
2915 h264_d3d11va_hwaccel_select="h264_decoder"
2916 h264_d3d11va2_hwaccel_deps="d3d11va"
2917 h264_d3d11va2_hwaccel_select="h264_decoder"
2918 h264_dxva2_hwaccel_deps="dxva2"
2919 h264_dxva2_hwaccel_select="h264_decoder"
2920 h264_nvdec_hwaccel_deps="nvdec"
2921 h264_nvdec_hwaccel_select="h264_decoder"
2922 h264_vaapi_hwaccel_deps="vaapi"
2923 h264_vaapi_hwaccel_select="h264_decoder"
2924 h264_vdpau_hwaccel_deps="vdpau"
2925 h264_vdpau_hwaccel_select="h264_decoder"
2926 h264_videotoolbox_hwaccel_deps="videotoolbox"
2927 h264_videotoolbox_hwaccel_select="h264_decoder"
2928 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2929 hevc_d3d11va_hwaccel_select="hevc_decoder"
2930 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2931 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2932 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2933 hevc_dxva2_hwaccel_select="hevc_decoder"
2934 hevc_nvdec_hwaccel_deps="nvdec"
2935 hevc_nvdec_hwaccel_select="hevc_decoder"
2936 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2937 hevc_vaapi_hwaccel_select="hevc_decoder"
2938 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2939 hevc_vdpau_hwaccel_select="hevc_decoder"
2940 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2941 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2942 mjpeg_nvdec_hwaccel_deps="nvdec"
2943 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2944 mjpeg_vaapi_hwaccel_deps="vaapi"
2945 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2946 mpeg_xvmc_hwaccel_deps="xvmc"
2947 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2948 mpeg1_nvdec_hwaccel_deps="nvdec"
2949 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2950 mpeg1_vdpau_hwaccel_deps="vdpau"
2951 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2952 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2954 mpeg1_xvmc_hwaccel_deps="xvmc"
2955 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2956 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2957 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2958 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2959 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2960 mpeg2_dxva2_hwaccel_deps="dxva2"
2961 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2962 mpeg2_nvdec_hwaccel_deps="nvdec"
2963 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2964 mpeg2_vaapi_hwaccel_deps="vaapi"
2965 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2966 mpeg2_vdpau_hwaccel_deps="vdpau"
2967 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2968 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2969 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2970 mpeg2_xvmc_hwaccel_deps="xvmc"
2971 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2972 mpeg4_nvdec_hwaccel_deps="nvdec"
2973 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2974 mpeg4_vaapi_hwaccel_deps="vaapi"
2975 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2976 mpeg4_vdpau_hwaccel_deps="vdpau"
2977 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2978 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2979 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2980 vc1_d3d11va_hwaccel_deps="d3d11va"
2981 vc1_d3d11va_hwaccel_select="vc1_decoder"
2982 vc1_d3d11va2_hwaccel_deps="d3d11va"
2983 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2984 vc1_dxva2_hwaccel_deps="dxva2"
2985 vc1_dxva2_hwaccel_select="vc1_decoder"
2986 vc1_nvdec_hwaccel_deps="nvdec"
2987 vc1_nvdec_hwaccel_select="vc1_decoder"
2988 vc1_vaapi_hwaccel_deps="vaapi"
2989 vc1_vaapi_hwaccel_select="vc1_decoder"
2990 vc1_vdpau_hwaccel_deps="vdpau"
2991 vc1_vdpau_hwaccel_select="vc1_decoder"
2992 vp8_nvdec_hwaccel_deps="nvdec"
2993 vp8_nvdec_hwaccel_select="vp8_decoder"
2994 vp8_vaapi_hwaccel_deps="vaapi"
2995 vp8_vaapi_hwaccel_select="vp8_decoder"
2996 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2997 vp9_d3d11va_hwaccel_select="vp9_decoder"
2998 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2999 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3000 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3001 vp9_dxva2_hwaccel_select="vp9_decoder"
3002 vp9_nvdec_hwaccel_deps="nvdec"
3003 vp9_nvdec_hwaccel_select="vp9_decoder"
3004 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3005 vp9_vaapi_hwaccel_select="vp9_decoder"
3006 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3007 vp9_vdpau_hwaccel_select="vp9_decoder"
3008 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3009 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3010 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3011 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3012 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3013 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3014
3015 # hardware-accelerated codecs
3016 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3017 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3018 omx_deps="libdl pthreads"
3019 omx_rpi_select="omx"
3020 qsv_deps="libmfx"
3021 qsvdec_select="qsv"
3022 qsvenc_select="qsv"
3023 qsvvpp_select="qsv"
3024 vaapi_encode_deps="vaapi"
3025 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3026
3027 hwupload_cuda_filter_deps="ffnvcodec"
3028 scale_npp_filter_deps="ffnvcodec libnpp"
3029 scale_cuda_filter_deps="ffnvcodec"
3030 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3031 thumbnail_cuda_filter_deps="ffnvcodec"
3032 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3033 transpose_npp_filter_deps="ffnvcodec libnpp"
3034 overlay_cuda_filter_deps="ffnvcodec"
3035 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3036
3037 amf_deps_any="libdl LoadLibrary"
3038 nvenc_deps="ffnvcodec"
3039 nvenc_deps_any="libdl LoadLibrary"
3040 nvenc_encoder_deps="nvenc"
3041
3042 aac_mf_encoder_deps="mediafoundation"
3043 ac3_mf_encoder_deps="mediafoundation"
3044 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3045 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3046 h264_amf_encoder_deps="amf"
3047 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3048 h264_cuvid_decoder_deps="cuvid"
3049 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3050 h264_mediacodec_decoder_deps="mediacodec"
3051 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3052 h264_mf_encoder_deps="mediafoundation"
3053 h264_mmal_decoder_deps="mmal"
3054 h264_nvenc_encoder_deps="nvenc"
3055 h264_omx_encoder_deps="omx"
3056 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3057 h264_qsv_encoder_select="qsvenc"
3058 h264_rkmpp_decoder_deps="rkmpp"
3059 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3060 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3061 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3062 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3063 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3064 hevc_amf_encoder_deps="amf"
3065 hevc_cuvid_decoder_deps="cuvid"
3066 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3067 hevc_mediacodec_decoder_deps="mediacodec"
3068 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3069 hevc_mf_encoder_deps="mediafoundation"
3070 hevc_nvenc_encoder_deps="nvenc"
3071 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3072 hevc_qsv_encoder_select="hevcparse qsvenc"
3073 hevc_rkmpp_decoder_deps="rkmpp"
3074 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3075 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3076 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3077 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3078 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3079 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3080 mjpeg_cuvid_decoder_deps="cuvid"
3081 mjpeg_qsv_decoder_select="qsvdec"
3082 mjpeg_qsv_encoder_deps="libmfx"
3083 mjpeg_qsv_encoder_select="qsvenc"
3084 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3085 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3086 mp3_mf_encoder_deps="mediafoundation"
3087 mpeg1_cuvid_decoder_deps="cuvid"
3088 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3089 mpeg2_crystalhd_decoder_select="crystalhd"
3090 mpeg2_cuvid_decoder_deps="cuvid"
3091 mpeg2_mmal_decoder_deps="mmal"
3092 mpeg2_mediacodec_decoder_deps="mediacodec"
3093 mpeg2_qsv_decoder_select="qsvdec"
3094 mpeg2_qsv_encoder_select="qsvenc"
3095 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3096 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3097 mpeg4_crystalhd_decoder_select="crystalhd"
3098 mpeg4_cuvid_decoder_deps="cuvid"
3099 mpeg4_mediacodec_decoder_deps="mediacodec"
3100 mpeg4_mmal_decoder_deps="mmal"
3101 mpeg4_omx_encoder_deps="omx"
3102 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3103 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3104 msmpeg4_crystalhd_decoder_select="crystalhd"
3105 nvenc_h264_encoder_select="h264_nvenc_encoder"
3106 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3107 vc1_crystalhd_decoder_select="crystalhd"
3108 vc1_cuvid_decoder_deps="cuvid"
3109 vc1_mmal_decoder_deps="mmal"
3110 vc1_qsv_decoder_select="qsvdec"
3111 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3112 vp8_cuvid_decoder_deps="cuvid"
3113 vp8_mediacodec_decoder_deps="mediacodec"
3114 vp8_qsv_decoder_select="qsvdec"
3115 vp8_rkmpp_decoder_deps="rkmpp"
3116 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3117 vp8_vaapi_encoder_select="vaapi_encode"
3118 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3119 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3120 vp9_cuvid_decoder_deps="cuvid"
3121 vp9_mediacodec_decoder_deps="mediacodec"
3122 vp9_qsv_decoder_select="qsvdec"
3123 vp9_rkmpp_decoder_deps="rkmpp"
3124 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3125 vp9_vaapi_encoder_select="vaapi_encode"
3126 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3127 vp9_qsv_encoder_select="qsvenc"
3128 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3129 wmv3_crystalhd_decoder_select="crystalhd"
3130
3131 # parsers
3132 aac_parser_select="adts_header"
3133 av1_parser_select="cbs_av1"
3134 h264_parser_select="golomb h264dsp h264parse"
3135 hevc_parser_select="hevcparse"
3136 mpegaudio_parser_select="mpegaudioheader"
3137 mpegvideo_parser_select="mpegvideo"
3138 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3139 vc1_parser_select="vc1dsp"
3140
3141 # bitstream_filters
3142 aac_adtstoasc_bsf_select="adts_header"
3143 av1_frame_merge_bsf_select="cbs_av1"
3144 av1_frame_split_bsf_select="cbs_av1"
3145 av1_metadata_bsf_select="cbs_av1"
3146 eac3_core_bsf_select="ac3_parser"
3147 filter_units_bsf_select="cbs"
3148 h264_metadata_bsf_deps="const_nan"
3149 h264_metadata_bsf_select="cbs_h264"
3150 h264_redundant_pps_bsf_select="cbs_h264"
3151 hevc_metadata_bsf_select="cbs_h265"
3152 mjpeg2jpeg_bsf_select="jpegtables"
3153 mpeg2_metadata_bsf_select="cbs_mpeg2"
3154 trace_headers_bsf_select="cbs"
3155 vp9_metadata_bsf_select="cbs_vp9"
3156
3157 # external libraries
3158 aac_at_decoder_deps="audiotoolbox"
3159 aac_at_decoder_select="aac_adtstoasc_bsf"
3160 ac3_at_decoder_deps="audiotoolbox"
3161 ac3_at_decoder_select="ac3_parser"
3162 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3163 alac_at_decoder_deps="audiotoolbox"
3164 amr_nb_at_decoder_deps="audiotoolbox"
3165 avisynth_deps_any="libdl LoadLibrary"
3166 avisynth_demuxer_deps="avisynth"
3167 avisynth_demuxer_select="riffdec"
3168 eac3_at_decoder_deps="audiotoolbox"
3169 eac3_at_decoder_select="ac3_parser"
3170 gsm_ms_at_decoder_deps="audiotoolbox"
3171 ilbc_at_decoder_deps="audiotoolbox"
3172 mp1_at_decoder_deps="audiotoolbox"
3173 mp2_at_decoder_deps="audiotoolbox"
3174 mp3_at_decoder_deps="audiotoolbox"
3175 mp1_at_decoder_select="mpegaudioheader"
3176 mp2_at_decoder_select="mpegaudioheader"
3177 mp3_at_decoder_select="mpegaudioheader"
3178 pcm_alaw_at_decoder_deps="audiotoolbox"
3179 pcm_mulaw_at_decoder_deps="audiotoolbox"
3180 qdmc_decoder_select="fft"
3181 qdmc_at_decoder_deps="audiotoolbox"
3182 qdm2_at_decoder_deps="audiotoolbox"
3183 aac_at_encoder_deps="audiotoolbox"
3184 aac_at_encoder_select="audio_frame_queue"
3185 alac_at_encoder_deps="audiotoolbox"
3186 alac_at_encoder_select="audio_frame_queue"
3187 ilbc_at_encoder_deps="audiotoolbox"
3188 ilbc_at_encoder_select="audio_frame_queue"
3189 pcm_alaw_at_encoder_deps="audiotoolbox"
3190 pcm_alaw_at_encoder_select="audio_frame_queue"
3191 pcm_mulaw_at_encoder_deps="audiotoolbox"
3192 pcm_mulaw_at_encoder_select="audio_frame_queue"
3193 chromaprint_muxer_deps="chromaprint"
3194 h264_videotoolbox_encoder_deps="pthreads"
3195 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3196 hevc_videotoolbox_encoder_deps="pthreads"
3197 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3198 libaom_av1_decoder_deps="libaom"
3199 libaom_av1_encoder_deps="libaom"
3200 libaom_av1_encoder_select="extract_extradata_bsf"
3201 libaribb24_decoder_deps="libaribb24"
3202 libcelt_decoder_deps="libcelt"
3203 libcodec2_decoder_deps="libcodec2"
3204 libcodec2_encoder_deps="libcodec2"
3205 libdav1d_decoder_deps="libdav1d"
3206 libdavs2_decoder_deps="libdavs2"
3207 libfdk_aac_decoder_deps="libfdk_aac"
3208 libfdk_aac_encoder_deps="libfdk_aac"
3209 libfdk_aac_encoder_select="audio_frame_queue"
3210 libgme_demuxer_deps="libgme"
3211 libgsm_decoder_deps="libgsm"
3212 libgsm_encoder_deps="libgsm"
3213 libgsm_ms_decoder_deps="libgsm"
3214 libgsm_ms_encoder_deps="libgsm"
3215 libilbc_decoder_deps="libilbc"
3216 libilbc_encoder_deps="libilbc"
3217 libkvazaar_encoder_deps="libkvazaar"
3218 libmodplug_demuxer_deps="libmodplug"
3219 libmp3lame_encoder_deps="libmp3lame"
3220 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3221 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3222 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3223 libopencore_amrnb_encoder_select="audio_frame_queue"
3224 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3225 libopenh264_decoder_deps="libopenh264"
3226 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3227 libopenh264_encoder_deps="libopenh264"
3228 libopenjpeg_decoder_deps="libopenjpeg"
3229 libopenjpeg_encoder_deps="libopenjpeg"
3230 libopenmpt_demuxer_deps="libopenmpt"
3231 libopus_decoder_deps="libopus"
3232 libopus_encoder_deps="libopus"
3233 libopus_encoder_select="audio_frame_queue"
3234 librav1e_encoder_deps="librav1e"
3235 librav1e_encoder_select="extract_extradata_bsf"
3236 librsvg_decoder_deps="librsvg"
3237 libshine_encoder_deps="libshine"
3238 libshine_encoder_select="audio_frame_queue"
3239 libspeex_decoder_deps="libspeex"
3240 libspeex_encoder_deps="libspeex"
3241 libspeex_encoder_select="audio_frame_queue"
3242 libtheora_encoder_deps="libtheora"
3243 libtwolame_encoder_deps="libtwolame"
3244 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3245 libvorbis_decoder_deps="libvorbis"
3246 libvorbis_encoder_deps="libvorbis libvorbisenc"
3247 libvorbis_encoder_select="audio_frame_queue"
3248 libvpx_vp8_decoder_deps="libvpx"
3249 libvpx_vp8_encoder_deps="libvpx"
3250 libvpx_vp9_decoder_deps="libvpx"
3251 libvpx_vp9_encoder_deps="libvpx"
3252 libwavpack_encoder_deps="libwavpack"
3253 libwavpack_encoder_select="audio_frame_queue"
3254 libwebp_encoder_deps="libwebp"
3255 libwebp_anim_encoder_deps="libwebp"
3256 libx262_encoder_deps="libx262"
3257 libx264_encoder_deps="libx264"
3258 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3259 libx264rgb_encoder_select="libx264_encoder"
3260 libx265_encoder_deps="libx265"
3261 libxavs_encoder_deps="libxavs"
3262 libxavs2_encoder_deps="libxavs2"
3263 libxvid_encoder_deps="libxvid"
3264 libzvbi_teletext_decoder_deps="libzvbi"
3265 vapoursynth_demuxer_deps="vapoursynth"
3266 videotoolbox_suggest="coreservices"
3267 videotoolbox_deps="corefoundation coremedia corevideo"
3268 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3269
3270 # demuxers / muxers
3271 ac3_demuxer_select="ac3_parser"
3272 act_demuxer_select="riffdec"
3273 aiff_muxer_select="iso_media"
3274 asf_demuxer_select="riffdec"
3275 asf_o_demuxer_select="riffdec"
3276 asf_muxer_select="riffenc"
3277 asf_stream_muxer_select="asf_muxer"
3278 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3279 avi_demuxer_select="iso_media riffdec exif"
3280 avi_muxer_select="riffenc"
3281 caf_demuxer_select="iso_media riffdec"
3282 caf_muxer_select="iso_media"
3283 dash_muxer_select="mp4_muxer"
3284 dash_demuxer_deps="libxml2"
3285 dirac_demuxer_select="dirac_parser"
3286 dts_demuxer_select="dca_parser"
3287 dtshd_demuxer_select="dca_parser"
3288 dv_demuxer_select="dvprofile"
3289 dv_muxer_select="dvprofile"
3290 dxa_demuxer_select="riffdec"
3291 eac3_demuxer_select="ac3_parser"
3292 f4v_muxer_select="mov_muxer"
3293 fifo_muxer_deps="threads"
3294 flac_demuxer_select="flac_parser"
3295 flv_muxer_select="aac_adtstoasc_bsf"
3296 gxf_muxer_select="pcm_rechunk_bsf"
3297 hds_muxer_select="flv_muxer"
3298 hls_muxer_select="mpegts_muxer"
3299 hls_muxer_suggest="gcrypt openssl"
3300 image2_alias_pix_demuxer_select="image2_demuxer"
3301 image2_brender_pix_demuxer_select="image2_demuxer"
3302 ipod_muxer_select="mov_muxer"
3303 ismv_muxer_select="mov_muxer"
3304 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3305 latm_muxer_select="aac_adtstoasc_bsf"
3306 matroska_audio_muxer_select="matroska_muxer"
3307 matroska_demuxer_select="iso_media riffdec"
3308 matroska_demuxer_suggest="bzlib lzo zlib"
3309 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3310 mlp_demuxer_select="mlp_parser"
3311 mmf_muxer_select="riffenc"
3312 mov_demuxer_select="iso_media riffdec"
3313 mov_demuxer_suggest="zlib"
3314 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3315 mp3_demuxer_select="mpegaudio_parser"
3316 mp3_muxer_select="mpegaudioheader"
3317 mp4_muxer_select="mov_muxer"
3318 mpegts_demuxer_select="iso_media"
3319 mpegts_muxer_select="adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3320 mpegtsraw_demuxer_select="mpegts_demuxer"
3321 mxf_muxer_select="golomb pcm_rechunk_bsf"
3322 mxf_d10_muxer_select="mxf_muxer"
3323 mxf_opatom_muxer_select="mxf_muxer"
3324 nut_muxer_select="riffenc"
3325 nuv_demuxer_select="riffdec"
3326 oga_muxer_select="ogg_muxer"
3327 ogg_demuxer_select="dirac_parse"
3328 ogv_muxer_select="ogg_muxer"
3329 opus_muxer_select="ogg_muxer"
3330 psp_muxer_select="mov_muxer"
3331 rtp_demuxer_select="sdp_demuxer"
3332 rtp_muxer_select="golomb jpegtables"
3333 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3334 rtsp_demuxer_select="http_protocol rtpdec"
3335 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3336 sap_demuxer_select="sdp_demuxer"
3337 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3338 sdp_demuxer_select="rtpdec"
3339 smoothstreaming_muxer_select="ismv_muxer"
3340 spdif_demuxer_select="adts_header"
3341 spdif_muxer_select="adts_header"
3342 spx_muxer_select="ogg_muxer"
3343 swf_demuxer_suggest="zlib"
3344 tak_demuxer_select="tak_parser"
3345 truehd_demuxer_select="mlp_parser"
3346 tg2_muxer_select="mov_muxer"
3347 tgp_muxer_select="mov_muxer"
3348 vobsub_demuxer_select="mpegps_demuxer"
3349 w64_demuxer_select="wav_demuxer"
3350 w64_muxer_select="wav_muxer"
3351 wav_demuxer_select="riffdec"
3352 wav_muxer_select="riffenc"
3353 webm_chunk_muxer_select="webm_muxer"
3354 webm_muxer_select="iso_media riffenc"
3355 webm_dash_manifest_demuxer_select="matroska_demuxer"
3356 wtv_demuxer_select="mpegts_demuxer riffdec"
3357 wtv_muxer_select="mpegts_muxer riffenc"
3358 xmv_demuxer_select="riffdec"
3359 xwma_demuxer_select="riffdec"
3360
3361 # indevs / outdevs
3362 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3363 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3364 alsa_indev_deps="alsa"
3365 alsa_outdev_deps="alsa"
3366 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3367 avfoundation_indev_suggest="coregraphics applicationservices"
3368 avfoundation_indev_extralibs="-framework Foundation"
3369 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3370 caca_outdev_deps="libcaca"
3371 decklink_deps_any="libdl LoadLibrary"
3372 decklink_indev_deps="decklink threads"
3373 decklink_indev_extralibs="-lstdc++"
3374 decklink_outdev_deps="decklink threads"
3375 decklink_outdev_suggest="libklvanc"
3376 decklink_outdev_extralibs="-lstdc++"
3377 dshow_indev_deps="IBaseFilter"
3378 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3379 fbdev_indev_deps="linux_fb_h"
3380 fbdev_outdev_deps="linux_fb_h"
3381 gdigrab_indev_deps="CreateDIBSection"
3382 gdigrab_indev_extralibs="-lgdi32"
3383 gdigrab_indev_select="bmp_decoder"
3384 iec61883_indev_deps="libiec61883"
3385 jack_indev_deps="libjack"
3386 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3387 kmsgrab_indev_deps="libdrm"
3388 lavfi_indev_deps="avfilter"
3389 libcdio_indev_deps="libcdio"
3390 libdc1394_indev_deps="libdc1394"
3391 openal_indev_deps="openal"
3392 opengl_outdev_deps="opengl"
3393 opengl_outdev_suggest="sdl2"
3394 oss_indev_deps_any="sys_soundcard_h"
3395 oss_outdev_deps_any="sys_soundcard_h"
3396 pulse_indev_deps="libpulse"
3397 pulse_outdev_deps="libpulse"
3398 sdl2_outdev_deps="sdl2"
3399 sndio_indev_deps="sndio"
3400 sndio_outdev_deps="sndio"
3401 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3402 v4l2_indev_suggest="libv4l2"
3403 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3404 v4l2_outdev_suggest="libv4l2"
3405 vfwcap_indev_deps="vfw32 vfwcap_defines"
3406 xcbgrab_indev_deps="libxcb"
3407 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3408 xv_outdev_deps="xlib"
3409
3410 # protocols
3411 async_protocol_deps="threads"
3412 bluray_protocol_deps="libbluray"
3413 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3414 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3415 ffrtmpcrypt_protocol_select="tcp_protocol"
3416 ffrtmphttp_protocol_conflict="librtmp_protocol"
3417 ffrtmphttp_protocol_select="http_protocol"
3418 ftp_protocol_select="tcp_protocol"
3419 gopher_protocol_select="network"
3420 http_protocol_select="tcp_protocol"
3421 http_protocol_suggest="zlib"
3422 httpproxy_protocol_select="tcp_protocol"
3423 httpproxy_protocol_suggest="zlib"
3424 https_protocol_select="tls_protocol"
3425 https_protocol_suggest="zlib"
3426 icecast_protocol_select="http_protocol"
3427 mmsh_protocol_select="http_protocol"
3428 mmst_protocol_select="network"
3429 rtmp_protocol_conflict="librtmp_protocol"
3430 rtmp_protocol_select="tcp_protocol"
3431 rtmp_protocol_suggest="zlib"
3432 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3433 rtmpe_protocol_suggest="zlib"
3434 rtmps_protocol_conflict="librtmp_protocol"
3435 rtmps_protocol_select="tls_protocol"
3436 rtmps_protocol_suggest="zlib"
3437 rtmpt_protocol_select="ffrtmphttp_protocol"
3438 rtmpt_protocol_suggest="zlib"
3439 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3440 rtmpte_protocol_suggest="zlib"
3441 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3442 rtmpts_protocol_suggest="zlib"
3443 rtp_protocol_select="udp_protocol"
3444 schannel_conflict="openssl gnutls libtls mbedtls"
3445 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3446 sctp_protocol_select="network"
3447 securetransport_conflict="openssl gnutls libtls mbedtls"
3448 srtp_protocol_select="rtp_protocol srtp"
3449 tcp_protocol_select="network"
3450 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3451 tls_protocol_select="tcp_protocol"
3452 udp_protocol_select="network"
3453 udplite_protocol_select="network"
3454 unix_protocol_deps="sys_un_h"
3455 unix_protocol_select="network"
3456
3457 # external library protocols
3458 libamqp_protocol_deps="librabbitmq"
3459 libamqp_protocol_select="network"
3460 librtmp_protocol_deps="librtmp"
3461 librtmpe_protocol_deps="librtmp"
3462 librtmps_protocol_deps="librtmp"
3463 librtmpt_protocol_deps="librtmp"
3464 librtmpte_protocol_deps="librtmp"
3465 libsmbclient_protocol_deps="libsmbclient gplv3"
3466 libsrt_protocol_deps="libsrt"
3467 libsrt_protocol_select="network"
3468 libssh_protocol_deps="libssh"
3469 libtls_conflict="openssl gnutls mbedtls"
3470 libzmq_protocol_deps="libzmq"
3471 libzmq_protocol_select="network"
3472
3473 # filters
3474 afftdn_filter_deps="avcodec"
3475 afftdn_filter_select="fft"
3476 afftfilt_filter_deps="avcodec"
3477 afftfilt_filter_select="fft"
3478 afir_filter_deps="avcodec"
3479 afir_filter_select="rdft"
3480 amovie_filter_deps="avcodec avformat"
3481 aresample_filter_deps="swresample"
3482 asr_filter_deps="pocketsphinx"
3483 ass_filter_deps="libass"
3484 atempo_filter_deps="avcodec"
3485 atempo_filter_select="rdft"
3486 avgblur_opencl_filter_deps="opencl"
3487 avgblur_vulkan_filter_deps="vulkan libglslang"
3488 azmq_filter_deps="libzmq"
3489 blackframe_filter_deps="gpl"
3490 bm3d_filter_deps="avcodec"
3491 bm3d_filter_select="dct"
3492 boxblur_filter_deps="gpl"
3493 boxblur_opencl_filter_deps="opencl gpl"
3494 bs2b_filter_deps="libbs2b"
3495 chromaber_vulkan_filter_deps="vulkan libglslang"
3496 colorkey_opencl_filter_deps="opencl"
3497 colormatrix_filter_deps="gpl"
3498 convolution_opencl_filter_deps="opencl"
3499 convolve_filter_deps="avcodec"
3500 convolve_filter_select="fft"
3501 coreimage_filter_deps="coreimage appkit"
3502 coreimage_filter_extralibs="-framework OpenGL"
3503 coreimagesrc_filter_deps="coreimage appkit"
3504 coreimagesrc_filter_extralibs="-framework OpenGL"
3505 cover_rect_filter_deps="avcodec avformat gpl"
3506 cropdetect_filter_deps="gpl"
3507 deconvolve_filter_deps="avcodec"
3508 deconvolve_filter_select="fft"
3509 deinterlace_qsv_filter_deps="libmfx"
3510 deinterlace_vaapi_filter_deps="vaapi"
3511 delogo_filter_deps="gpl"
3512 denoise_vaapi_filter_deps="vaapi"
3513 derain_filter_select="dnn"
3514 deshake_filter_select="pixelutils"
3515 deshake_opencl_filter_deps="opencl"
3516 dilation_opencl_filter_deps="opencl"
3517 dnn_processing_filter_deps="swscale"
3518 dnn_processing_filter_select="dnn"
3519 drawtext_filter_deps="libfreetype"
3520 drawtext_filter_suggest="libfontconfig libfribidi"
3521 elbg_filter_deps="avcodec"
3522 eq_filter_deps="gpl"
3523 erosion_opencl_filter_deps="opencl"
3524 fftfilt_filter_deps="avcodec"
3525 fftfilt_filter_select="rdft"
3526 fftdnoiz_filter_deps="avcodec"
3527 fftdnoiz_filter_select="fft"
3528 find_rect_filter_deps="avcodec avformat gpl"
3529 firequalizer_filter_deps="avcodec"
3530 firequalizer_filter_select="rdft"
3531 flite_filter_deps="libflite"
3532 framerate_filter_select="scene_sad"
3533 freezedetect_filter_select="scene_sad"
3534 frei0r_filter_deps="frei0r libdl"
3535 frei0r_src_filter_deps="frei0r libdl"
3536 fspp_filter_deps="gpl"
3537 headphone_filter_select="fft"
3538 histeq_filter_deps="gpl"
3539 hqdn3d_filter_deps="gpl"
3540 interlace_filter_deps="gpl"
3541 kerndeint_filter_deps="gpl"
3542 ladspa_filter_deps="ladspa libdl"
3543 lensfun_filter_deps="liblensfun version3"
3544 lv2_filter_deps="lv2"
3545 mcdeint_filter_deps="avcodec gpl"
3546 movie_filter_deps="avcodec avformat"
3547 mpdecimate_filter_deps="gpl"
3548 mpdecimate_filter_select="pixelutils"
3549 minterpolate_filter_select="scene_sad"
3550 mptestsrc_filter_deps="gpl"
3551 negate_filter_deps="lut_filter"
3552 nlmeans_opencl_filter_deps="opencl"
3553 nnedi_filter_deps="gpl"
3554 ocr_filter_deps="libtesseract"
3555 ocv_filter_deps="libopencv"
3556 openclsrc_filter_deps="opencl"
3557 overlay_opencl_filter_deps="opencl"
3558 overlay_qsv_filter_deps="libmfx"
3559 overlay_qsv_filter_select="qsvvpp"
3560 overlay_vulkan_filter_deps="vulkan libglslang"
3561 owdenoise_filter_deps="gpl"
3562 pad_opencl_filter_deps="opencl"
3563 pan_filter_deps="swresample"
3564 perspective_filter_deps="gpl"
3565 phase_filter_deps="gpl"
3566 pp7_filter_deps="gpl"
3567 pp_filter_deps="gpl postproc"
3568 prewitt_opencl_filter_deps="opencl"
3569 procamp_vaapi_filter_deps="vaapi"
3570 program_opencl_filter_deps="opencl"
3571 pullup_filter_deps="gpl"
3572 removelogo_filter_deps="avcodec avformat swscale"
3573 repeatfields_filter_deps="gpl"
3574 resample_filter_deps="avresample"
3575 roberts_opencl_filter_deps="opencl"
3576 rubberband_filter_deps="librubberband"
3577 sab_filter_deps="gpl swscale"
3578 scale2ref_filter_deps="swscale"
3579 scale_filter_deps="swscale"
3580 scale_qsv_filter_deps="libmfx"
3581 scdet_filter_select="scene_sad"
3582 select_filter_select="scene_sad"
3583 sharpness_vaapi_filter_deps="vaapi"
3584 showcqt_filter_deps="avcodec avformat swscale"
3585 showcqt_filter_suggest="libfontconfig libfreetype"
3586 showcqt_filter_select="fft"
3587 showfreqs_filter_deps="avcodec"
3588 showfreqs_filter_select="fft"
3589 showspatial_filter_select="fft"
3590 showspectrum_filter_deps="avcodec"
3591 showspectrum_filter_select="fft"
3592 showspectrumpic_filter_deps="avcodec"
3593 showspectrumpic_filter_select="fft"
3594 signature_filter_deps="gpl avcodec avformat"
3595 sinc_filter_select="rdft"
3596 smartblur_filter_deps="gpl swscale"
3597 sobel_opencl_filter_deps="opencl"
3598 sofalizer_filter_deps="libmysofa avcodec"
3599 sofalizer_filter_select="fft"
3600 spectrumsynth_filter_deps="avcodec"
3601 spectrumsynth_filter_select="fft"
3602 spp_filter_deps="gpl avcodec"
3603 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3604 sr_filter_deps="avformat swscale"
3605 sr_filter_select="dnn"
3606 stereo3d_filter_deps="gpl"
3607 subtitles_filter_deps="avformat avcodec libass"
3608 super2xsai_filter_deps="gpl"
3609 pixfmts_super2xsai_test_deps="super2xsai_filter"
3610 superequalizer_filter_select="rdft"
3611 surround_filter_select="rdft"
3612 tinterlace_filter_deps="gpl"
3613 tinterlace_merge_test_deps="tinterlace_filter"
3614 tinterlace_pad_test_deps="tinterlace_filter"
3615 tonemap_filter_deps="const_nan"
3616 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3617 tonemap_opencl_filter_deps="opencl const_nan"
3618 transpose_opencl_filter_deps="opencl"
3619 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3620 unsharp_opencl_filter_deps="opencl"
3621 uspp_filter_deps="gpl avcodec"
3622 vaguedenoiser_filter_deps="gpl"
3623 vidstabdetect_filter_deps="libvidstab"
3624 vidstabtransform_filter_deps="libvidstab"
3625 libvmaf_filter_deps="libvmaf pthreads"
3626 zmq_filter_deps="libzmq"
3627 zoompan_filter_deps="swscale"
3628 zscale_filter_deps="libzimg const_nan"
3629 scale_vaapi_filter_deps="vaapi"
3630 scale_vulkan_filter_deps="vulkan libglslang"
3631 vpp_qsv_filter_deps="libmfx"
3632 vpp_qsv_filter_select="qsvvpp"
3633 xfade_opencl_filter_deps="opencl"
3634 yadif_cuda_filter_deps="ffnvcodec"
3635 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3636
3637 # examples
3638 avio_list_dir_deps="avformat avutil"
3639 avio_reading_deps="avformat avcodec avutil"
3640 decode_audio_example_deps="avcodec avutil"
3641 decode_video_example_deps="avcodec avutil"
3642 demuxing_decoding_example_deps="avcodec avformat avutil"
3643 encode_audio_example_deps="avcodec avutil"
3644 encode_video_example_deps="avcodec avutil"
3645 extract_mvs_example_deps="avcodec avformat avutil"
3646 filter_audio_example_deps="avfilter avutil"
3647 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3648 filtering_video_example_deps="avfilter avcodec avformat avutil"
3649 http_multiclient_example_deps="avformat avutil fork"
3650 hw_decode_example_deps="avcodec avformat avutil"
3651 metadata_example_deps="avformat avutil"
3652 muxing_example_deps="avcodec avformat avutil swscale"
3653 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3654 remuxing_example_deps="avcodec avformat avutil"
3655 resampling_audio_example_deps="avutil swresample"
3656 scaling_video_example_deps="avutil swscale"
3657 transcode_aac_example_deps="avcodec avformat swresample"
3658 transcoding_example_deps="avfilter avcodec avformat avutil"
3659 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3660 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3661
3662 # EXTRALIBS_LIST
3663 cpu_init_extralibs="pthreads_extralibs"
3664 cws2fws_extralibs="zlib_extralibs"
3665
3666 # libraries, in any order
3667 avcodec_deps="avutil"
3668 avcodec_suggest="libm"
3669 avcodec_select="null_bsf"
3670 avdevice_deps="avformat avcodec avutil"
3671 avdevice_suggest="libm"
3672 avfilter_deps="avutil"
3673 avfilter_suggest="libm"
3674 avformat_deps="avcodec avutil"
3675 avformat_suggest="libm network zlib"
3676 avresample_deps="avutil"
3677 avresample_suggest="libm"
3678 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3679 postproc_deps="avutil gpl"
3680 postproc_suggest="libm"
3681 swresample_deps="avutil"
3682 swresample_suggest="libm libsoxr"
3683 swscale_deps="avutil"
3684 swscale_suggest="libm"
3685
3686 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3687 avfilter_extralibs="pthreads_extralibs"
3688 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3689
3690 # programs
3691 ffmpeg_deps="avcodec avfilter avformat"
3692 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3693                hflip_filter null_filter
3694                transpose_filter trim_filter vflip_filter"
3695 ffmpeg_suggest="ole32 psapi shell32"
3696 ffplay_deps="avcodec avformat swscale swresample sdl2"
3697 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3698 ffplay_suggest="shell32"
3699 ffprobe_deps="avcodec avformat"
3700 ffprobe_suggest="shell32"
3701
3702 # documentation
3703 podpages_deps="perl"
3704 manpages_deps="perl pod2man"
3705 htmlpages_deps="perl"
3706 htmlpages_deps_any="makeinfo_html texi2html"
3707 txtpages_deps="perl makeinfo"
3708 doc_deps_any="manpages htmlpages podpages txtpages"
3709
3710 # default parameters
3711
3712 logfile="ffbuild/config.log"
3713
3714 # installation paths
3715 prefix_default="/usr/local"
3716 bindir_default='${prefix}/bin'
3717 datadir_default='${prefix}/share/ffmpeg'
3718 docdir_default='${prefix}/share/doc/ffmpeg'
3719 incdir_default='${prefix}/include'
3720 libdir_default='${prefix}/lib'
3721 mandir_default='${prefix}/share/man'
3722
3723 # toolchain
3724 ar_default="ar"
3725 cc_default="gcc"
3726 cxx_default="g++"
3727 host_cc_default="gcc"
3728 doxygen_default="doxygen"
3729 install="install"
3730 ln_s_default="ln -s -f"
3731 nm_default="nm -g"
3732 pkg_config_default=pkg-config
3733 ranlib_default="ranlib"
3734 strip_default="strip"
3735 version_script='--version-script'
3736 objformat="elf32"
3737 x86asmexe_default="nasm"
3738 windres_default="windres"
3739 striptype="direct"
3740
3741 # OS
3742 target_os_default=$(tolower $(uname -s))
3743 host_os=$target_os_default
3744
3745 # machine
3746 if test "$target_os_default" = aix; then
3747     arch_default=$(uname -p)
3748     strip_default="strip -X32_64"
3749     nm_default="nm -g -X32_64"
3750 else
3751     arch_default=$(uname -m)
3752 fi
3753 cpu="generic"
3754 intrinsics="none"
3755
3756 # configurable options
3757 enable $PROGRAM_LIST
3758 enable $DOCUMENT_LIST
3759 enable $EXAMPLE_LIST
3760 enable $(filter_out avresample $LIBRARY_LIST)
3761 enable stripping
3762
3763 enable asm
3764 enable debug
3765 enable doc
3766 enable faan faandct faanidct
3767 enable large_tests
3768 enable optimizations
3769 enable runtime_cpudetect
3770 enable safe_bitstream_reader
3771 enable static
3772 enable swscale_alpha
3773 enable valgrind_backtrace
3774
3775 sws_max_filter_size_default=256
3776 set_default sws_max_filter_size
3777
3778 # internal components are enabled by default
3779 enable $EXTRALIBS_LIST
3780
3781 # Avoid external, non-system, libraries getting enabled by dependency resolution
3782 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3783
3784 # build settings
3785 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3786 LIBPREF="lib"
3787 LIBSUF=".a"
3788 FULLNAME='$(NAME)$(BUILDSUF)'
3789 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3790 SLIBPREF="lib"
3791 SLIBSUF=".so"
3792 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3793 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3794 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3795 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3796 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3797 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3798 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3799
3800 asflags_filter=echo
3801 cflags_filter=echo
3802 ldflags_filter=echo
3803
3804 AS_C='-c'
3805 AS_O='-o $@'
3806 CC_C='-c'
3807 CC_E='-E -o $@'
3808 CC_O='-o $@'
3809 CXX_C='-c'
3810 CXX_O='-o $@'
3811 OBJCC_C='-c'
3812 OBJCC_E='-E -o $@'
3813 OBJCC_O='-o $@'
3814 X86ASM_O='-o $@'
3815 LD_O='-o $@'
3816 LD_LIB='-l%'
3817 LD_PATH='-L'
3818 HOSTCC_C='-c'
3819 HOSTCC_E='-E -o $@'
3820 HOSTCC_O='-o $@'
3821 HOSTLD_O='-o $@'
3822 NVCC_C='-c'
3823 NVCC_O='-o $@'
3824
3825 host_extralibs='-lm'
3826 host_cflags_filter=echo
3827 host_ldflags_filter=echo
3828
3829 target_path='$(CURDIR)'
3830
3831 # since the object filename is not given with the -MM flag, the compiler
3832 # is only able to print the basename, and we must add the path ourselves
3833 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3834 DEPFLAGS='-MM'
3835
3836 mkdir -p ffbuild
3837
3838 # find source path
3839 if test -f configure; then
3840     source_path=.
3841 elif test -f src/configure; then
3842     source_path=src
3843 else
3844     source_path=$(cd $(dirname "$0"); pwd)
3845     case "$source_path" in
3846         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3847     esac
3848     test -e "$source_path/config.h" &&
3849         die "Out of tree builds are impossible with config.h in source dir."
3850 fi
3851
3852 for v in "$@"; do
3853     r=${v#*=}
3854     l=${v%"$r"}
3855     r=$(sh_quote "$r")
3856     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3857 done
3858
3859 find_things_extern(){
3860     thing=$1
3861     pattern=$2
3862     file=$source_path/$3
3863     out=${4:-$thing}
3864     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3865 }
3866
3867 find_filters_extern(){
3868     file=$source_path/$1
3869     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3870 }
3871
3872 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3873 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3874 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3875 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3876 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3877 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3878 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3879 CODEC_LIST="
3880     $ENCODER_LIST
3881     $DECODER_LIST
3882 "
3883 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3884 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3885 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3886 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3887
3888 AVCODEC_COMPONENTS_LIST="
3889     $BSF_LIST
3890     $DECODER_LIST
3891     $ENCODER_LIST
3892     $HWACCEL_LIST
3893     $PARSER_LIST
3894 "
3895
3896 AVDEVICE_COMPONENTS_LIST="
3897     $INDEV_LIST
3898     $OUTDEV_LIST
3899 "
3900
3901 AVFILTER_COMPONENTS_LIST="
3902     $FILTER_LIST
3903 "
3904
3905 AVFORMAT_COMPONENTS_LIST="
3906     $DEMUXER_LIST
3907     $MUXER_LIST
3908     $PROTOCOL_LIST
3909 "
3910
3911 ALL_COMPONENTS="
3912     $AVCODEC_COMPONENTS_LIST
3913     $AVDEVICE_COMPONENTS_LIST
3914     $AVFILTER_COMPONENTS_LIST
3915     $AVFORMAT_COMPONENTS_LIST
3916 "
3917
3918 for n in $COMPONENT_LIST; do
3919     v=$(toupper ${n%s})_LIST
3920     eval enable \$$v
3921     eval ${n}_if_any="\$$v"
3922 done
3923
3924 enable $ARCH_EXT_LIST
3925
3926 die_unknown(){
3927     echo "Unknown option \"$1\"."
3928     echo "See $0 --help for available options."
3929     exit 1
3930 }
3931
3932 print_in_columns() {
3933     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3934     {
3935         num_cols = width > col_width ? int(width / col_width) : 1;
3936         num_rows = int((NF + num_cols-1) / num_cols);
3937         y = x = 1;
3938         for (y = 1; y <= num_rows; y++) {
3939             i = y;
3940             for (x = 1; x <= num_cols; x++) {
3941                 if (i <= NF) {
3942                   line = sprintf("%s%-" col_width "s", line, $i);
3943                 }
3944                 i = i + num_rows;
3945             }
3946             print line; line = "";
3947         }
3948     }' | sed 's/ *$//'
3949 }
3950
3951 show_list() {
3952     suffix=_$1
3953     shift
3954     echo $* | sed s/$suffix//g | print_in_columns
3955     exit 0
3956 }
3957
3958 rand_list(){
3959     IFS=', '
3960     set -- $*
3961     unset IFS
3962     for thing; do
3963         comp=${thing%:*}
3964         prob=${thing#$comp}
3965         prob=${prob#:}
3966         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3967         echo "prob ${prob:-0.5}"
3968         printf '%s\n' $comp
3969     done
3970 }
3971
3972 do_random(){
3973     action=$1
3974     shift
3975     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3976     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3977 }
3978
3979 for opt do
3980     optval="${opt#*=}"
3981     case "$opt" in
3982         --extra-ldflags=*)
3983             add_ldflags $optval
3984         ;;
3985         --extra-ldexeflags=*)
3986             add_ldexeflags $optval
3987         ;;
3988         --extra-ldsoflags=*)
3989             add_ldsoflags $optval
3990         ;;
3991         --extra-ldlibflags=*)
3992             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3993                  "removed in the future. Use --extra-ldsoflags instead."
3994             add_ldsoflags $optval
3995         ;;
3996         --extra-libs=*)
3997             add_extralibs $optval
3998         ;;
3999         --disable-devices)
4000             disable $INDEV_LIST $OUTDEV_LIST
4001         ;;
4002         --enable-debug=*)
4003             debuglevel="$optval"
4004         ;;
4005         --disable-programs)
4006             disable $PROGRAM_LIST
4007         ;;
4008         --disable-everything)
4009             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4010         ;;
4011         --disable-all)
4012             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4013             disable $LIBRARY_LIST $PROGRAM_LIST doc
4014             enable avutil
4015         ;;
4016         --enable-random|--disable-random)
4017             action=${opt%%-random}
4018             do_random ${action#--} $COMPONENT_LIST
4019         ;;
4020         --enable-random=*|--disable-random=*)
4021             action=${opt%%-random=*}
4022             do_random ${action#--} $optval
4023         ;;
4024         --enable-sdl)
4025             enable sdl2
4026         ;;
4027         --enable-*=*|--disable-*=*)
4028             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4029             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4030             eval list=\$$(toupper $thing)_LIST
4031             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4032             list=$(filter "$name" $list)
4033             [ "$list" = "" ] && warn "Option $opt did not match anything"
4034             test $action = enable && warn_if_gets_disabled $list
4035             $action $list
4036         ;;
4037         --enable-yasm|--disable-yasm)
4038             warn "The ${opt} option is only provided for compatibility and will be\n"\
4039                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4040             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4041         ;;
4042         --yasmexe=*)
4043             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4044                  "removed in the future. Use --x86asmexe instead."
4045             x86asmexe="$optval"
4046         ;;
4047         --enable-?*|--disable-?*)
4048             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4049             if is_in $option $COMPONENT_LIST; then
4050                 test $action = disable && action=unset
4051                 eval $action \$$(toupper ${option%s})_LIST
4052             elif is_in $option $CMDLINE_SELECT; then
4053                 $action $option
4054             else
4055                 die_unknown $opt
4056             fi
4057         ;;
4058         --list-*)
4059             NAME="${opt#--list-}"
4060             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4061             NAME=${NAME%s}
4062             eval show_list $NAME \$$(toupper $NAME)_LIST
4063         ;;
4064         --help|-h) show_help
4065         ;;
4066         --quiet|-q) quiet=yes
4067         ;;
4068         --fatal-warnings) enable fatal_warnings
4069         ;;
4070         --libfuzzer=*)
4071             libfuzzer_path="$optval"
4072         ;;
4073         *)
4074             optname="${opt%%=*}"
4075             optname="${optname#--}"
4076             optname=$(echo "$optname" | sed 's/-/_/g')
4077             if is_in $optname $CMDLINE_SET; then
4078                 eval $optname='$optval'
4079             elif is_in $optname $CMDLINE_APPEND; then
4080                 append $optname "$optval"
4081             else
4082                 die_unknown $opt
4083             fi
4084         ;;
4085     esac
4086 done
4087
4088 for e in $env; do
4089     eval "export $e"
4090 done
4091
4092 if disabled autodetect; then
4093
4094     # Unless iconv is explicitely disabled by the user, we still want to probe
4095     # for the iconv from the libc.
4096     disabled iconv || enable libc_iconv
4097
4098     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4099     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4100 fi
4101 # Mark specifically enabled, but normally autodetected libraries as requested.
4102 for lib in $AUTODETECT_LIBS; do
4103     enabled $lib && request $lib
4104 done
4105 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4106 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4107 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4108
4109 disabled logging && logfile=/dev/null
4110
4111 # command line configuration sanity checks
4112
4113 # we need to build at least one lib type
4114 if ! enabled_any static shared; then
4115     cat <<EOF
4116 At least one library type must be built.
4117 Specify --enable-static to build the static libraries or --enable-shared to
4118 build the shared libraries as well. To only build the shared libraries specify
4119 --disable-static in addition to --enable-shared.
4120 EOF
4121     exit 1
4122 fi
4123
4124 die_license_disabled() {
4125     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4126 }
4127
4128 die_license_disabled_gpl() {
4129     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4130 }
4131
4132 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4133 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4134
4135 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4136 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4137
4138 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4139
4140 if enabled nonfree; then
4141     license="nonfree and unredistributable"
4142 elif enabled gplv3; then
4143     license="GPL version 3 or later"
4144 elif enabled lgplv3; then
4145     license="LGPL version 3 or later"
4146 elif enabled gpl; then
4147     license="GPL version 2 or later"
4148 else
4149     license="LGPL version 2.1 or later"
4150 fi
4151
4152 enabled_all gnutls openssl &&
4153     die "GnuTLS and OpenSSL must not be enabled at the same time."
4154
4155 enabled_all gnutls mbedtls &&
4156     die "GnuTLS and mbedTLS must not be enabled at the same time."
4157
4158 enabled_all openssl mbedtls &&
4159     die "OpenSSL and mbedTLS must not be enabled at the same time."
4160
4161 # Disable all the library-specific components if the library itself
4162 # is disabled, see AVCODEC_LIST and following _LIST variables.
4163
4164 disable_components(){
4165     disabled ${1} && disable $(
4166         eval components="\$$(toupper ${1})_COMPONENTS"
4167         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4168     )
4169 }
4170
4171 map 'disable_components $v' $LIBRARY_LIST
4172
4173 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4174 set >> $logfile
4175
4176 test -n "$valgrind" && toolchain="valgrind-memcheck"
4177
4178 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4179     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4180     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4181 }
4182
4183 case "$toolchain" in
4184     *-asan)
4185         cc_default="${toolchain%-asan}"
4186         add_cflags  -fsanitize=address
4187         add_ldflags -fsanitize=address
4188     ;;
4189     *-msan)
4190         cc_default="${toolchain%-msan}"
4191         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4192         add_ldflags -fsanitize=memory
4193     ;;
4194     *-tsan)
4195         cc_default="${toolchain%-tsan}"
4196         add_cflags  -fsanitize=thread
4197         add_ldflags -fsanitize=thread
4198         case "$toolchain" in
4199             gcc-tsan)
4200                 add_cflags  -fPIC
4201                 add_ldflags -fPIC
4202                 ;;
4203         esac
4204     ;;
4205     *-usan)
4206         cc_default="${toolchain%-usan}"
4207         add_cflags  -fsanitize=undefined
4208         add_ldflags -fsanitize=undefined
4209     ;;
4210     valgrind-*)
4211         target_exec_default="valgrind"
4212         case "$toolchain" in
4213             valgrind-massif)
4214                 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"
4215                 ;;
4216             valgrind-memcheck)
4217                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4218                 ;;
4219         esac
4220     ;;
4221     msvc)
4222         # Check whether the current MSVC version needs the C99 converter.
4223         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4224         # support enough of C99 to build ffmpeg. Default to the new
4225         # behaviour if the regexp was unable to match anything, since this
4226         # successfully parses the version number of existing supported
4227         # versions that require the converter (MSVC 2010 and 2012).
4228         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4229         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4230             cc_default="cl.exe"
4231             cxx_default="cl.exe"
4232         else
4233             die "Unsupported MSVC version (2013 or newer required)"
4234         fi
4235         ld_default="$source_path/compat/windows/mslink"
4236         nm_default="dumpbin.exe -symbols"
4237         ar_default="lib.exe"
4238         case "$arch" in
4239         aarch64|arm64)
4240             as_default="armasm64.exe"
4241             ;;
4242         arm*)
4243             as_default="armasm.exe"
4244             ;;
4245         esac
4246         target_os_default="win32"
4247         # Use a relative path for TMPDIR. This makes sure all the
4248         # ffconf temp files are written with a relative path, avoiding
4249         # issues with msys/win32 path conversion for MSVC parameters
4250         # such as -Fo<file> or -out:<file>.
4251         TMPDIR=.
4252     ;;
4253     icl)
4254         cc_default="icl"
4255         ld_default="xilink"
4256         nm_default="dumpbin -symbols"
4257         ar_default="xilib"
4258         target_os_default="win32"
4259         TMPDIR=.
4260     ;;
4261     gcov)
4262         add_cflags  -fprofile-arcs -ftest-coverage
4263         add_ldflags -fprofile-arcs -ftest-coverage
4264     ;;
4265     llvm-cov)
4266         add_cflags -fprofile-arcs -ftest-coverage
4267         add_ldflags --coverage
4268     ;;
4269     hardened)
4270         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4271         add_cflags   -fno-strict-overflow -fstack-protector-all
4272         add_ldflags  -Wl,-z,relro -Wl,-z,now
4273         add_cflags   -fPIE
4274         add_ldexeflags -fPIE -pie
4275     ;;
4276     ?*)
4277         die "Unknown toolchain $toolchain"
4278     ;;
4279 esac
4280
4281 if test -n "$cross_prefix"; then
4282     test -n "$arch" && test -n "$target_os" ||
4283         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4284     enable cross_compile
4285 fi
4286
4287 set_default target_os
4288 if test "$target_os" = android; then
4289     cc_default="clang"
4290 fi
4291
4292 ar_default="${cross_prefix}${ar_default}"
4293 cc_default="${cross_prefix}${cc_default}"
4294 cxx_default="${cross_prefix}${cxx_default}"
4295 nm_default="${cross_prefix}${nm_default}"
4296 pkg_config_default="${cross_prefix}${pkg_config_default}"
4297 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4298     ranlib_default="${cross_prefix}${ranlib_default} -D"
4299 else
4300     ranlib_default="${cross_prefix}${ranlib_default}"
4301 fi
4302 strip_default="${cross_prefix}${strip_default}"
4303 windres_default="${cross_prefix}${windres_default}"
4304
4305 sysinclude_default="${sysroot}/usr/include"
4306
4307 if enabled cuda_sdk; then
4308     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4309     enable cuda_nvcc
4310 fi
4311
4312 if enabled cuda_nvcc; then
4313     nvcc_default="nvcc"
4314     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4315 else
4316     nvcc_default="clang"
4317     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4318     NVCC_C=""
4319 fi
4320
4321 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4322     target_exec x86asmexe nvcc
4323 enabled cross_compile || host_cc_default=$cc
4324 set_default host_cc
4325
4326 pkg_config_fail_message=""
4327 if ! $pkg_config --version >/dev/null 2>&1; then
4328     warn "$pkg_config not found, library detection may fail."
4329     pkg_config=false
4330 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4331     pkg_config_fail_message="
4332 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4333 fi
4334
4335 if test $doxygen != $doxygen_default && \
4336   ! $doxygen --version >/dev/null 2>&1; then
4337     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4338 fi
4339
4340 exesuf() {
4341     case $1 in
4342         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4343     esac
4344 }
4345
4346 EXESUF=$(exesuf $target_os)
4347 HOSTEXESUF=$(exesuf $host_os)
4348
4349 # set temporary file name
4350 : ${TMPDIR:=$TEMPDIR}
4351 : ${TMPDIR:=$TMP}
4352 : ${TMPDIR:=/tmp}
4353
4354 if [ -n "$tempprefix" ] ; then
4355     mktemp(){
4356         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4357         echo "$tmpname"
4358         mkdir "$tmpname"
4359     }
4360 elif ! test_cmd mktemp -u XXXXXX; then
4361     # simple replacement for missing mktemp
4362     # NOT SAFE FOR GENERAL USE
4363     mktemp(){
4364         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4365         echo "$tmpname"
4366         mkdir "$tmpname"
4367     }
4368 fi
4369
4370 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4371     die "Unable to create temporary directory in $TMPDIR."
4372
4373 tmpfile(){
4374     tmp="${FFTMPDIR}/test"$2
4375     (set -C; exec > $tmp) 2> /dev/null ||
4376         die "Unable to create temporary file in $FFTMPDIR."
4377     eval $1=$tmp
4378 }
4379
4380 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4381 trap 'exit 2' INT
4382
4383 tmpfile TMPASM .asm
4384 tmpfile TMPC   .c
4385 tmpfile TMPCPP .cpp
4386 tmpfile TMPE   $EXESUF
4387 tmpfile TMPH   .h
4388 tmpfile TMPM   .m
4389 tmpfile TMPCU  .cu
4390 tmpfile TMPO   .o
4391 tmpfile TMPS   .S
4392 tmpfile TMPSH  .sh
4393 tmpfile TMPV   .ver
4394
4395 unset -f mktemp
4396
4397 chmod +x $TMPE
4398
4399 # make sure we can execute files in $TMPDIR
4400 cat > $TMPSH 2>> $logfile <<EOF
4401 #! /bin/sh
4402 EOF
4403 chmod +x $TMPSH >> $logfile 2>&1
4404 if ! $TMPSH >> $logfile 2>&1; then
4405     cat <<EOF
4406 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4407 variable to another directory and make sure that it is not mounted noexec.
4408 EOF
4409     die "Sanity test failed."
4410 fi
4411
4412 armasm_flags(){
4413     for flag; do
4414         case $flag in
4415             # Filter out MSVC cl.exe options from cflags that shouldn't
4416             # be passed to gas-preprocessor
4417             -M[TD]*)                                            ;;
4418             *)                  echo $flag                      ;;
4419         esac
4420    done
4421 }
4422
4423 cparser_flags(){
4424     for flag; do
4425         case $flag in
4426             -Wno-switch)             echo -Wno-switch-enum ;;
4427             -Wno-format-zero-length) ;;
4428             -Wdisabled-optimization) ;;
4429             -Wno-pointer-sign)       echo -Wno-other ;;
4430             *)                       echo $flag ;;
4431         esac
4432     done
4433 }
4434
4435 msvc_common_flags(){
4436     for flag; do
4437         case $flag in
4438             # In addition to specifying certain flags under the compiler
4439             # specific filters, they must be specified here as well or else the
4440             # generic catch all at the bottom will print the original flag.
4441             -Wall)                ;;
4442             -Wextra)              ;;
4443             -std=c*)              ;;
4444             # Common flags
4445             -fomit-frame-pointer) ;;
4446             -g)                   echo -Z7 ;;
4447             -fno-math-errno)      ;;
4448             -fno-common)          ;;
4449             -fno-signed-zeros)    ;;
4450             -fPIC)                ;;
4451             -mthumb)              ;;
4452             -march=*)             ;;
4453             -lz)                  echo zlib.lib ;;
4454             -lx264)               echo libx264.lib ;;
4455             -lstdc++)             ;;
4456             -l*)                  echo ${flag#-l}.lib ;;
4457             -LARGEADDRESSAWARE)   echo $flag ;;
4458             -L*)                  echo -libpath:${flag#-L} ;;
4459             -Wl,*)                ;;
4460             *)                    echo $flag ;;
4461         esac
4462     done
4463 }
4464
4465 msvc_flags(){
4466     msvc_common_flags "$@"
4467     for flag; do
4468         case $flag in
4469             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4470                                        -wd4554 ;;
4471             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4472                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4473                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4474                                        -wd4307 \
4475                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4476         esac
4477     done
4478 }
4479
4480 icl_flags(){
4481     msvc_common_flags "$@"
4482     for flag; do
4483         case $flag in
4484             # Despite what Intel's documentation says -Wall, which is supported
4485             # on Windows, does enable remarks so disable them here.
4486             -Wall)                echo $flag -Qdiag-disable:remark ;;
4487             -std=c99)             echo -Qstd=c99 ;;
4488             -flto)                echo -ipo ;;
4489         esac
4490     done
4491 }
4492
4493 icc_flags(){
4494     for flag; do
4495         case $flag in
4496             -flto)                echo -ipo ;;
4497             *)                    echo $flag ;;
4498         esac
4499     done
4500 }
4501
4502 suncc_flags(){
4503     for flag; do
4504         case $flag in
4505             -march=*|-mcpu=*)
4506                 case "${flag#*=}" in
4507                     native)                   echo -xtarget=native       ;;
4508                     v9|niagara)               echo -xarch=sparc          ;;
4509                     ultrasparc)               echo -xarch=sparcvis       ;;
4510                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4511                     i586|pentium)             echo -xchip=pentium        ;;
4512                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4513                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4514                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4515                     pentium4*)          echo -xtarget=pentium4           ;;
4516                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4517                     *-sse3)             echo -xarch=sse3                 ;;
4518                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4519                     bonnell)                   echo -xarch=ssse3         ;;
4520                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4521                     westmere)                  echo -xtarget=westmere    ;;
4522                     silvermont)                echo -xarch=sse4_2        ;;
4523                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4524                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4525                                                echo -xarch=avx           ;;
4526                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4527                     btver1)                    echo -xarch=amdsse4a      ;;
4528                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4529                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4530                     k8|opteron|athlon64|athlon-fx)
4531                                                echo -xarch=sse2a         ;;
4532                     athlon*)                   echo -xarch=pentium_proa  ;;
4533                 esac
4534                 ;;
4535             -std=c99)             echo -xc99              ;;
4536             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4537             -fPIC)                echo -KPIC -xcode=pic32 ;;
4538             -W*,*)                echo $flag              ;;
4539             -f*-*|-W*|-mimpure-text)                      ;;
4540             -shared)              echo -G                 ;;
4541             *)                    echo $flag              ;;
4542         esac
4543     done
4544 }
4545
4546 probe_cc(){
4547     pfx=$1
4548     _cc=$2
4549     first=$3
4550
4551     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4552     unset _ld_o _ldflags _ld_lib _ld_path
4553     unset _depflags _DEPCMD _DEPFLAGS
4554     _flags_filter=echo
4555
4556     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4557         true # no-op to avoid reading stdin in following checks
4558     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4559         _type=llvm_gcc
4560         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4561         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4562         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4563         _cflags_speed='-O3'
4564         _cflags_size='-Os'
4565     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4566         _type=gcc
4567         gcc_version=$($_cc --version | head -n1)
4568         gcc_basever=$($_cc -dumpversion)
4569         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4570         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4571         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4572         case $gcc_basever in
4573             2) ;;
4574             2.*) ;;
4575             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4576         esac
4577         if [ "$first" = true ]; then
4578             case $gcc_basever in
4579                 4.2*)
4580                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4581             esac
4582         fi
4583         _cflags_speed='-O3'
4584         _cflags_size='-Os'
4585     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4586         _type=icc
4587         _ident=$($_cc --version | head -n1)
4588         _depflags='-MMD'
4589         _cflags_speed='-O3'
4590         _cflags_size='-Os'
4591         _cflags_noopt='-O1'
4592         _flags_filter=icc_flags
4593     elif $_cc -v 2>&1 | grep -q xlc; then
4594         _type=xlc
4595         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4596         _cflags_speed='-O5'
4597         _cflags_size='-O5 -qcompact'
4598     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4599         test -d "$sysroot" || die "No valid sysroot specified."
4600         _type=armcc
4601         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4602         armcc_conf="$PWD/armcc.conf"
4603         $_cc --arm_linux_configure                 \
4604              --arm_linux_config_file="$armcc_conf" \
4605              --configure_sysroot="$sysroot"        \
4606              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4607              die "Error creating armcc configuration file."
4608         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4609         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4610         as_default="${cross_prefix}gcc"
4611         _depflags='-MMD'
4612         _cflags_speed='-O3'
4613         _cflags_size='-Os'
4614     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4615         _type=clang
4616         _ident=$($_cc --version 2>/dev/null | head -n1)
4617         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4618         _cflags_speed='-O3'
4619         _cflags_size='-Oz'
4620     elif $_cc -V 2>&1 | grep -q Sun; then
4621         _type=suncc
4622         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4623         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4624         _DEPFLAGS='-xM1 -xc99'
4625         _ldflags='-std=c99'
4626         _cflags_speed='-O5'
4627         _cflags_size='-O5 -xspace'
4628         _flags_filter=suncc_flags
4629     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4630         _type=pathscale
4631         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4632         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4633         _cflags_speed='-O2'
4634         _cflags_size='-Os'
4635         _flags_filter='filter_out -Wdisabled-optimization'
4636     elif $_cc -v 2>&1 | grep -q Open64; then
4637         _type=open64
4638         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4639         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4640         _cflags_speed='-O2'
4641         _cflags_size='-Os'
4642         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4643     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4644         _type=armasm
4645         _ident=$($_cc | head -n1)
4646         # 4509: "This form of conditional instruction is deprecated"
4647         _flags="-nologo -ignore 4509"
4648         _flags_filter=armasm_flags
4649     elif $_cc 2>&1 | grep -q Intel; then
4650         _type=icl
4651         _ident=$($_cc 2>&1 | head -n1)
4652         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4653         # Not only is O3 broken on 13.x+ but it is slower on all previous
4654         # versions (tested) as well.
4655         _cflags_speed="-O2"
4656         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4657         if $_cc 2>&1 | grep -q Linker; then
4658             _ld_o='-out:$@'
4659         else
4660             _ld_o='-Fe$@'
4661         fi
4662         _cc_o='-Fo$@'
4663         _cc_e='-P'
4664         _flags_filter=icl_flags
4665         _ld_lib='lib%.a'
4666         _ld_path='-libpath:'
4667         # -Qdiag-error to make icl error when seeing certain unknown arguments
4668         _flags='-nologo -Qdiag-error:4044,10157'
4669         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4670         # with MSVC which enables it by default.
4671         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4672         disable stripping
4673     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4674         # lld can emulate multiple different linkers; in ms link.exe mode,
4675         # the -? parameter gives the help output which contains an identifyable
4676         # string, while it gives an error in other modes.
4677         _type=lld-link
4678         # The link.exe mode doesn't have a switch for getting the version,
4679         # but we can force it back to gnu mode and get the version from there.
4680         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4681         _ld_o='-out:$@'
4682         _flags_filter=msvc_flags
4683         _ld_lib='lib%.a'
4684         _ld_path='-libpath:'
4685     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4686         _type=msvc
4687         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4688             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4689         else
4690             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4691         fi
4692         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4693         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4694         _cflags_speed="-O2"
4695         _cflags_size="-O1"
4696         _cflags_noopt="-O1"
4697         if $_cc -nologo- 2>&1 | grep -q Linker; then
4698             _ld_o='-out:$@'
4699         else
4700             _ld_o='-Fe$@'
4701         fi
4702         _cc_o='-Fo$@'
4703         _cc_e='-P -Fi$@'
4704         _flags_filter=msvc_flags
4705         _ld_lib='lib%.a'
4706         _ld_path='-libpath:'
4707         _flags='-nologo'
4708         disable stripping
4709     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4710         _type=cparser
4711         _ident=$($_cc --version | head -n1)
4712         _depflags='-MMD'
4713         _cflags_speed='-O4'
4714         _cflags_size='-O2'
4715         _flags_filter=cparser_flags
4716     fi
4717
4718     eval ${pfx}_type=\$_type
4719     eval ${pfx}_ident=\$_ident
4720 }
4721
4722 set_ccvars(){
4723     eval ${1}_C=\${_cc_c-\${${1}_C}}
4724     eval ${1}_E=\${_cc_e-\${${1}_E}}
4725     eval ${1}_O=\${_cc_o-\${${1}_O}}
4726
4727     if [ -n "$_depflags" ]; then
4728         eval ${1}_DEPFLAGS=\$_depflags
4729     else
4730         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4731         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4732         eval DEP${1}FLAGS=\$_flags
4733     fi
4734 }
4735
4736 probe_cc cc "$cc" "true"
4737 cflags_filter=$_flags_filter
4738 cflags_speed=$_cflags_speed
4739 cflags_size=$_cflags_size
4740 cflags_noopt=$_cflags_noopt
4741 add_cflags $_flags $_cflags
4742 cc_ldflags=$_ldflags
4743 set_ccvars CC
4744 set_ccvars CXX
4745
4746 probe_cc hostcc "$host_cc"
4747 host_cflags_filter=$_flags_filter
4748 host_cflags_speed=$_cflags_speed
4749 add_host_cflags  $_flags $_cflags
4750 set_ccvars HOSTCC
4751
4752 test -n "$cc_type" && enable $cc_type ||
4753     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4754
4755 : ${as_default:=$cc}
4756 : ${objcc_default:=$cc}
4757 : ${dep_cc_default:=$cc}
4758 : ${ld_default:=$cc}
4759 : ${host_ld_default:=$host_cc}
4760 set_default ar as objcc dep_cc ld ln_s host_ld windres
4761
4762 probe_cc as "$as"
4763 asflags_filter=$_flags_filter
4764 add_asflags $_flags $_cflags
4765 set_ccvars AS
4766
4767 probe_cc objcc "$objcc"
4768 objcflags_filter=$_flags_filter
4769 add_objcflags $_flags $_cflags
4770 set_ccvars OBJC
4771
4772 probe_cc ld "$ld"
4773 ldflags_filter=$_flags_filter
4774 add_ldflags $_flags $_ldflags
4775 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4776 LD_O=${_ld_o-$LD_O}
4777 LD_LIB=${_ld_lib-$LD_LIB}
4778 LD_PATH=${_ld_path-$LD_PATH}
4779
4780 probe_cc hostld "$host_ld"
4781 host_ldflags_filter=$_flags_filter
4782 add_host_ldflags $_flags $_ldflags
4783 HOSTLD_O=${_ld_o-$HOSTLD_O}
4784
4785 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4786     probe_cc depcc "$dep_cc"
4787     CCDEP=${_DEPCMD:-$DEPCMD}
4788     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4789     DEPCCFLAGS=$_flags
4790 fi
4791
4792 if $ar 2>&1 | grep -q Microsoft; then
4793     arflags="-nologo"
4794     ar_o='-out:$@'
4795 elif $ar 2>&1 | grep -q "\[D\] "; then
4796     arflags="rcD"
4797     ar_o='$@'
4798 else
4799     arflags="rc"
4800     ar_o='$@'
4801 fi
4802
4803 add_cflags $extra_cflags
4804 add_cxxflags $extra_cxxflags
4805 add_objcflags $extra_objcflags
4806 add_asflags $extra_cflags
4807
4808 if test -n "$sysroot"; then
4809     case "$cc_type" in
4810         gcc|llvm_gcc|clang)
4811             add_cppflags --sysroot="$sysroot"
4812             add_ldflags --sysroot="$sysroot"
4813         ;;
4814     esac
4815 fi
4816
4817 if test "$cpu" = host; then
4818     enabled cross_compile &&
4819         warn "--cpu=host makes no sense when cross-compiling."
4820
4821     case "$cc_type" in
4822         gcc|llvm_gcc)
4823             check_native(){
4824                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4825                 sed -n "/cc1.*$1=/{
4826                             s/.*$1=\\([^ ]*\\).*/\\1/
4827                             p
4828                             q
4829                         }" $TMPE
4830             }
4831             cpu=$(check_native -march || check_native -mcpu)
4832         ;;
4833         clang)
4834             check_native(){
4835                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4836                 sed -n "/cc1.*-target-cpu /{
4837                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4838                             p
4839                             q
4840                         }" $TMPE
4841             }
4842             cpu=$(check_native -march)
4843         ;;
4844     esac
4845
4846     test "${cpu:-host}" = host &&
4847         die "--cpu=host not supported with compiler $cc"
4848 fi
4849
4850 # Deal with common $arch aliases
4851 case "$arch" in
4852     aarch64|arm64)
4853         arch="aarch64"
4854     ;;
4855     arm*|iPad*|iPhone*)
4856         arch="arm"
4857     ;;
4858     mips*|IP*)
4859         case "$arch" in
4860         *el)
4861             add_cppflags -EL
4862             add_ldflags -EL
4863         ;;
4864         *eb)
4865             add_cppflags -EB
4866             add_ldflags -EB
4867         ;;
4868         esac
4869         arch="mips"
4870     ;;
4871     parisc*|hppa*)
4872         arch="parisc"
4873     ;;
4874     "Power Macintosh"|ppc*|powerpc*)
4875         arch="ppc"
4876     ;;
4877     s390|s390x)
4878         arch="s390"
4879     ;;
4880     sh4|sh)
4881         arch="sh4"
4882     ;;
4883     sun4*|sparc*)
4884         arch="sparc"
4885     ;;
4886     tilegx|tile-gx)
4887         arch="tilegx"
4888     ;;
4889     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4890         arch="x86"
4891     ;;
4892 esac
4893
4894 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4895 enable $arch
4896
4897 # Add processor-specific flags
4898 if enabled aarch64; then
4899
4900     case $cpu in
4901         armv*)
4902             cpuflags="-march=$cpu"
4903         ;;
4904         *)
4905             cpuflags="-mcpu=$cpu"
4906         ;;
4907     esac
4908
4909 elif enabled alpha; then
4910
4911     cpuflags="-mcpu=$cpu"
4912
4913 elif enabled arm; then
4914
4915     check_arm_arch() {
4916         test_cpp_condition stddef.h \
4917             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4918             $cpuflags
4919     }
4920
4921     probe_arm_arch() {
4922         if   check_arm_arch 4;        then echo armv4
4923         elif check_arm_arch 4T;       then echo armv4t
4924         elif check_arm_arch 5;        then echo armv5
4925         elif check_arm_arch 5E;       then echo armv5e
4926         elif check_arm_arch 5T;       then echo armv5t
4927         elif check_arm_arch 5TE;      then echo armv5te
4928         elif check_arm_arch 5TEJ;     then echo armv5te
4929         elif check_arm_arch 6;        then echo armv6
4930         elif check_arm_arch 6J;       then echo armv6j
4931         elif check_arm_arch 6K;       then echo armv6k
4932         elif check_arm_arch 6Z;       then echo armv6z
4933         elif check_arm_arch 6KZ;      then echo armv6zk
4934         elif check_arm_arch 6ZK;      then echo armv6zk
4935         elif check_arm_arch 6T2;      then echo armv6t2
4936         elif check_arm_arch 7;        then echo armv7
4937         elif check_arm_arch 7A  7_A;  then echo armv7-a
4938         elif check_arm_arch 7S;       then echo armv7-a
4939         elif check_arm_arch 7R  7_R;  then echo armv7-r
4940         elif check_arm_arch 7M  7_M;  then echo armv7-m
4941         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4942         elif check_arm_arch 8A  8_A;  then echo armv8-a
4943         fi
4944     }
4945
4946     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4947
4948     case $cpu in
4949         armv*)
4950             cpuflags="-march=$cpu"
4951             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4952         ;;
4953         *)
4954             cpuflags="-mcpu=$cpu"
4955             case $cpu in
4956                 cortex-a*)                               subarch=armv7a  ;;
4957                 cortex-r*)                               subarch=armv7r  ;;
4958                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4959                 arm11*)                                  subarch=armv6   ;;
4960                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4961                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4962                 *)                             subarch=$(probe_arm_arch) ;;
4963             esac
4964         ;;
4965     esac
4966
4967     case "$subarch" in
4968         armv5t*)    enable fast_clz                ;;
4969         armv[6-8]*)
4970             enable fast_clz
4971             disabled fast_unaligned || enable fast_unaligned
4972             ;;
4973     esac
4974
4975 elif enabled avr32; then
4976
4977     case $cpu in
4978         ap7[02]0[0-2])
4979             subarch="avr32_ap"
4980             cpuflags="-mpart=$cpu"
4981         ;;
4982         ap)
4983             subarch="avr32_ap"
4984             cpuflags="-march=$cpu"
4985         ;;
4986         uc3[ab]*)
4987             subarch="avr32_uc"
4988             cpuflags="-mcpu=$cpu"
4989         ;;
4990         uc)
4991             subarch="avr32_uc"
4992             cpuflags="-march=$cpu"
4993         ;;
4994     esac
4995
4996 elif enabled bfin; then
4997
4998     cpuflags="-mcpu=$cpu"
4999
5000 elif enabled mips; then
5001
5002     cpuflags="-march=$cpu"
5003
5004     if [ "$cpu" != "generic" ]; then
5005         disable mips32r2
5006         disable mips32r5
5007         disable mips64r2
5008         disable mips32r6
5009         disable mips64r6
5010         disable loongson2
5011         disable loongson3
5012
5013         case $cpu in
5014             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
5015                 enable mips32r2
5016                 disable msa
5017             ;;
5018             p5600|i6400|p6600)
5019                 disable mipsdsp
5020                 disable mipsdspr2
5021             ;;
5022             loongson*)
5023                 enable loongson2
5024                 enable loongson3
5025                 enable local_aligned
5026                 enable simd_align_16
5027                 enable fast_64bit
5028                 enable fast_clz
5029                 enable fast_cmov
5030                 enable fast_unaligned
5031                 disable aligned_stack
5032                 disable mipsdsp
5033                 disable mipsdspr2
5034                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5035                 if [ $cc == gcc ]; then
5036                     gcc_version=$(gcc -dumpversion)
5037                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5038                         expensive_optimization_flag=""
5039                     else
5040                         expensive_optimization_flag="-fno-expensive-optimizations"
5041                     fi
5042                 fi
5043                 case $cpu in
5044                     loongson3*)
5045                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5046                     ;;
5047                     loongson2e)
5048                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5049                     ;;
5050                     loongson2f)
5051                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5052                     ;;
5053                 esac
5054             ;;
5055             *)
5056                 # Unknown CPU. Disable everything.
5057                 warn "unknown CPU. Disabling all MIPS optimizations."
5058                 disable mipsfpu
5059                 disable mipsdsp
5060                 disable mipsdspr2
5061                 disable msa
5062                 disable mmi
5063             ;;
5064         esac
5065
5066         case $cpu in
5067             24kc)
5068                 disable mipsfpu
5069                 disable mipsdsp
5070                 disable mipsdspr2
5071             ;;
5072             24kf*)
5073                 disable mipsdsp
5074                 disable mipsdspr2
5075             ;;
5076             24kec|34kc|1004kc)
5077                 disable mipsfpu
5078                 disable mipsdspr2
5079             ;;
5080             24kef*|34kf*|1004kf*)
5081                 disable mipsdspr2
5082             ;;
5083             74kc)
5084                 disable mipsfpu
5085             ;;
5086             p5600)
5087                 enable mips32r5
5088                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5089             ;;
5090             i6400)
5091                 enable mips64r6
5092                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5093             ;;
5094             p6600)
5095                 enable mips64r6
5096                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5097             ;;
5098         esac
5099     else
5100         # We do not disable anything. Is up to the user to disable the unwanted features.
5101         warn 'generic cpu selected'
5102     fi
5103
5104 elif enabled ppc; then
5105
5106     disable ldbrx
5107
5108     case $(tolower $cpu) in
5109         601|ppc601|powerpc601)
5110             cpuflags="-mcpu=601"
5111             disable altivec
5112         ;;
5113         603*|ppc603*|powerpc603*)
5114             cpuflags="-mcpu=603"
5115             disable altivec
5116         ;;
5117         604*|ppc604*|powerpc604*)
5118             cpuflags="-mcpu=604"
5119             disable altivec
5120         ;;
5121         g3|75*|ppc75*|powerpc75*)
5122             cpuflags="-mcpu=750"
5123             disable altivec
5124         ;;
5125         g4|745*|ppc745*|powerpc745*)
5126             cpuflags="-mcpu=7450"
5127             disable vsx
5128         ;;
5129         74*|ppc74*|powerpc74*)
5130             cpuflags="-mcpu=7400"
5131             disable vsx
5132         ;;
5133         g5|970|ppc970|powerpc970)
5134             cpuflags="-mcpu=970"
5135             disable vsx
5136         ;;
5137         power[3-6]*)
5138             cpuflags="-mcpu=$cpu"
5139             disable vsx
5140         ;;
5141         power[7-8]*)
5142             cpuflags="-mcpu=$cpu"
5143         ;;
5144         cell)
5145             cpuflags="-mcpu=cell"
5146             enable ldbrx
5147             disable vsx
5148         ;;
5149         e500mc)
5150             cpuflags="-mcpu=e500mc"
5151             disable altivec
5152         ;;
5153         e500v2)
5154             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5155             disable altivec
5156             disable dcbzl
5157         ;;
5158         e500)
5159             cpuflags="-mcpu=8540 -mhard-float"
5160             disable altivec
5161             disable dcbzl
5162         ;;
5163     esac
5164
5165 elif enabled sparc; then
5166
5167     case $cpu in
5168         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5169             cpuflags="-mcpu=$cpu"
5170         ;;
5171         ultrasparc*|niagara[234])
5172             cpuflags="-mcpu=$cpu"
5173         ;;
5174     esac
5175
5176 elif enabled x86; then
5177
5178     case $cpu in
5179         i[345]86|pentium)
5180             cpuflags="-march=$cpu"
5181             disable i686
5182             disable mmx
5183         ;;
5184         # targets that do NOT support nopl and conditional mov (cmov)
5185         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5186             cpuflags="-march=$cpu"
5187             disable i686
5188         ;;
5189         # targets that do support nopl and conditional mov (cmov)
5190         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5191         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5192         |amdfam10|barcelona|b[dt]ver*|znver*)
5193             cpuflags="-march=$cpu"
5194             enable i686
5195             enable fast_cmov
5196         ;;
5197         # targets that do support conditional mov but on which it's slow
5198         pentium4|pentium4m|prescott|nocona)
5199             cpuflags="-march=$cpu"
5200             enable i686
5201             disable fast_cmov
5202         ;;
5203     esac
5204
5205 fi
5206
5207 if [ "$cpu" != generic ]; then
5208     add_cflags  $cpuflags
5209     add_asflags $cpuflags
5210     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5211 fi
5212
5213 # compiler sanity check
5214 test_exec <<EOF
5215 int main(void){ return 0; }
5216 EOF
5217 if test "$?" != 0; then
5218     echo "$cc is unable to create an executable file."
5219     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5220         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5221         echo "Only do this if you know what cross compiling means."
5222     fi
5223     die "C compiler test failed."
5224 fi
5225
5226 add_cppflags -D_ISOC99_SOURCE
5227 add_cxxflags -D__STDC_CONSTANT_MACROS
5228 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5229
5230 # some compilers silently accept -std=c11, so we also need to check that the
5231 # version macro is defined properly
5232 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5233     add_cflags -std=c11 ||
5234     check_cflags -std=c99
5235
5236 check_cppflags -D_FILE_OFFSET_BITS=64
5237 check_cppflags -D_LARGEFILE_SOURCE
5238
5239 add_host_cppflags -D_ISOC99_SOURCE
5240 check_host_cflags -std=c99
5241 check_host_cflags -Wall
5242 check_host_cflags $host_cflags_speed
5243
5244 check_64bit(){
5245     arch32=$1
5246     arch64=$2
5247     expr=${3:-'sizeof(void *) > 4'}
5248     test_code cc "" "int test[2*($expr) - 1]" &&
5249         subarch=$arch64 || subarch=$arch32
5250     enable $subarch
5251 }
5252
5253 case "$arch" in
5254     aarch64|alpha|ia64)
5255         enabled shared && enable_weak pic
5256     ;;
5257     mips)
5258         check_64bit mips mips64 '_MIPS_SIM > 1'
5259         enabled shared && enable_weak pic
5260     ;;
5261     parisc)
5262         check_64bit parisc parisc64
5263         enabled shared && enable_weak pic
5264     ;;
5265     ppc)
5266         check_64bit ppc ppc64
5267         enabled shared && enable_weak pic
5268     ;;
5269     s390)
5270         check_64bit s390 s390x
5271         enabled shared && enable_weak pic
5272     ;;
5273     sparc)
5274         check_64bit sparc sparc64
5275         enabled shared && enable_weak pic
5276     ;;
5277     x86)
5278         check_64bit x86_32 x86_64
5279         # Treat x32 as x64 for now. Note it also needs pic if shared
5280         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5281             subarch=x86_64 && enable x86_64 && disable x86_32
5282         if enabled x86_64; then
5283             enabled shared && enable_weak pic
5284             objformat=elf64
5285         fi
5286     ;;
5287 esac
5288
5289 # OS specific
5290 case $target_os in
5291     aix)
5292         SHFLAGS=-shared
5293         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5294         enabled shared && add_ldflags -Wl,-brtl
5295         arflags='-Xany -r -c'
5296         striptype=""
5297         ;;
5298     android)
5299         disable symver
5300         enable section_data_rel_ro
5301         add_cflags -fPIE
5302         add_ldexeflags -fPIE -pie
5303         SLIB_INSTALL_NAME='$(SLIBNAME)'
5304         SLIB_INSTALL_LINKS=
5305         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5306         ;;
5307     haiku)
5308         prefix_default="/boot/common"
5309         network_extralibs="-lnetwork"
5310         host_extralibs=
5311         ;;
5312     sunos)
5313         SHFLAGS='-shared -Wl,-h,$$(@F)'
5314         enabled x86 && append SHFLAGS -mimpure-text
5315         network_extralibs="-lsocket -lnsl"
5316         add_cppflags -D__EXTENSIONS__
5317         # When using suncc to build, the Solaris linker will mark
5318         # an executable with each instruction set encountered by
5319         # the Solaris assembler.  As our libraries contain their own
5320         # guards for processor-specific code, instead suppress
5321         # generation of the HWCAPS ELF section on Solaris x86 only.
5322         enabled_all suncc x86 &&
5323             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5324             add_ldflags -Wl,-M,mapfile
5325         nm_default='nm -P -g'
5326         striptype=""
5327         version_script='-M'
5328         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5329         ;;
5330     netbsd)
5331         disable symver
5332         oss_indev_extralibs="-lossaudio"
5333         oss_outdev_extralibs="-lossaudio"
5334         enabled gcc || check_ldflags -Wl,-zmuldefs
5335         ;;
5336     openbsd|bitrig)
5337         disable symver
5338         enable section_data_rel_ro
5339         striptype=""
5340         SHFLAGS='-shared'
5341         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5342         SLIB_INSTALL_LINKS=
5343         oss_indev_extralibs="-lossaudio"
5344         oss_outdev_extralibs="-lossaudio"
5345         ;;
5346     dragonfly)
5347         disable symver
5348         ;;
5349     freebsd)
5350         ;;
5351     bsd/os)
5352         add_extralibs -lpoll -lgnugetopt
5353         strip="strip -d"
5354         ;;
5355     darwin)
5356         enabled ppc && add_asflags -force_cpusubtype_ALL
5357         install_name_dir_default='$(SHLIBDIR)'
5358         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5359         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5360         strip="${strip} -x"
5361         add_ldflags -Wl,-dynamic,-search_paths_first
5362         check_cflags -Werror=partial-availability
5363         SLIBSUF=".dylib"
5364         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5365         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5366         enabled x86_64 && objformat="macho64" || objformat="macho32"
5367         enabled_any pic shared x86_64 ||
5368             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5369         check_headers dispatch/dispatch.h &&
5370             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5371         if test -n "$sysroot"; then
5372             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5373             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5374         fi
5375         version_script='-exported_symbols_list'
5376         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5377         # Workaround for Xcode 11 -fstack-check bug
5378         if enabled clang; then
5379             clang_version=$($cc -dumpversion)
5380             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5381         fi
5382         ;;
5383     msys*)
5384         die "Native MSYS builds are discouraged, please use the MINGW environment."
5385         ;;
5386     mingw32*|mingw64*)
5387         target_os=mingw32
5388         LIBTARGET=i386
5389         if enabled x86_64; then
5390             LIBTARGET="i386:x86-64"
5391         elif enabled arm; then
5392             LIBTARGET="arm"
5393         elif enabled aarch64; then
5394             LIBTARGET="arm64"
5395         fi
5396         if enabled shared; then
5397             # Cannot build both shared and static libs when using dllimport.
5398             disable static
5399         fi
5400         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5401         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5402         shlibdir_default="$bindir_default"
5403         SLIBPREF=""
5404         SLIBSUF=".dll"
5405         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5406         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5407         if test_cmd lib.exe -list; then
5408             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5409             if enabled x86_64; then
5410                 LIBTARGET=x64
5411             fi
5412         else
5413             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5414         fi
5415         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5416         SLIB_INSTALL_LINKS=
5417         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5418         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5419         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5420         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5421         enabled x86_64 && objformat="win64" || objformat="win32"
5422         dlltool="${cross_prefix}dlltool"
5423         ranlib=:
5424         enable dos_paths
5425         check_ldflags -Wl,--nxcompat,--dynamicbase
5426         # Lets work around some stupidity in binutils.
5427         # ld will strip relocations from executables even though we need them
5428         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5429         # however ld then forgets what the entry point should be (oops) so we
5430         # have to manually (re)set it.
5431         if enabled x86_32; then
5432             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5433         elif enabled x86_64; then
5434             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5435             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5436             # Set image base >4GB for extra entropy with HEASLR
5437             add_ldexeflags -Wl,--image-base,0x140000000
5438             append SHFLAGS -Wl,--image-base,0x180000000
5439         fi
5440         ;;
5441     win32|win64)
5442         disable symver
5443         if enabled shared; then
5444             # Link to the import library instead of the normal static library
5445             # for shared libs.
5446             LD_LIB='%.lib'
5447             # Cannot build both shared and static libs with MSVC or icl.
5448             disable static
5449         fi
5450         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5451         shlibdir_default="$bindir_default"
5452         SLIBPREF=""
5453         SLIBSUF=".dll"
5454         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5455         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5456         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5457         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5458         SLIB_INSTALL_LINKS=
5459         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5460         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5461         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5462         enabled x86_64 && objformat="win64" || objformat="win32"
5463         ranlib=:
5464         enable dos_paths
5465         ;;
5466     cygwin*)
5467         target_os=cygwin
5468         shlibdir_default="$bindir_default"
5469         SLIBPREF="cyg"
5470         SLIBSUF=".dll"
5471         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5472         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5473         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5474         SLIB_INSTALL_LINKS=
5475         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5476         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5477         enabled x86_64 && objformat="win64" || objformat="win32"
5478         enable dos_paths
5479         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5480         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5481         ;;
5482     *-dos|freedos|opendos)
5483         network_extralibs="-lsocket"
5484         objformat="coff"
5485         enable dos_paths
5486         ;;
5487     linux)
5488         enable section_data_rel_ro
5489         enabled_any arm aarch64 && enable_weak linux_perf
5490         ;;
5491     irix*)
5492         target_os=irix
5493         ranlib="echo ignoring ranlib"
5494         ;;
5495     os/2*)
5496         strip="lxlite -CS"
5497         striptype=""
5498         objformat="aout"
5499         add_cppflags -D_GNU_SOURCE
5500         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5501         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5502         LIBSUF="_s.a"
5503         SLIBPREF=""
5504         SLIBSUF=".dll"
5505         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5506         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5507         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5508             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5509             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5510             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5511             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5512         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5513             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5514         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5515         SLIB_INSTALL_LINKS=
5516         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5517         enable dos_paths
5518         enable_weak os2threads
5519         ;;
5520     gnu/kfreebsd)
5521         add_cppflags -D_BSD_SOURCE
5522         ;;
5523     gnu)
5524         ;;
5525     qnx)
5526         add_cppflags -D_QNX_SOURCE
5527         network_extralibs="-lsocket"
5528         ;;
5529     symbian)
5530         SLIBSUF=".dll"
5531         enable dos_paths
5532         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5533         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5534         add_ldflags -Wl,--target1-abs,--no-undefined \
5535                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5536                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5537         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5538                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5539                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5540         ;;
5541     minix)
5542         ;;
5543     none)
5544         ;;
5545     *)
5546         die "Unknown OS '$target_os'."
5547         ;;
5548 esac
5549
5550 # test if creating links works
5551 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5552 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5553 mkdir "$link_dest"
5554 $ln_s "$link_dest" "$link_name"
5555 touch "$link_dest/test_file"
5556 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5557     # create link to source path
5558     [ -e src ] && rm src
5559     $ln_s "$source_path" src
5560     source_link=src
5561 else
5562     # creating directory links doesn't work
5563     # fall back to using the full source path
5564     source_link="$source_path"
5565 fi
5566 # cleanup
5567 rm -r "$link_dest"
5568 rm -r "$link_name"
5569
5570 # determine libc flavour
5571
5572 probe_libc(){
5573     pfx=$1
5574     pfx_no_=${pfx%_}
5575     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5576     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5577         eval ${pfx}libc_type=uclibc
5578         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5579     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5580         eval ${pfx}libc_type=glibc
5581         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5582     # MinGW headers can be installed on Cygwin, so check for newlib first.
5583     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5584         eval ${pfx}libc_type=newlib
5585         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5586     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5587     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5588         eval ${pfx}libc_type=mingw64
5589         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5590             add_compat msvcrt/snprintf.o
5591             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5592         fi
5593         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5594         eval test \$${pfx_no_}cc_type = "gcc" &&
5595             add_${pfx}cppflags -D__printf__=__gnu_printf__
5596         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5597             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5598         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5599     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5600          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5601         eval ${pfx}libc_type=mingw32
5602         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5603             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5604             die "ERROR: MinGW32 runtime version must be >= 3.15."
5605         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5606         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5607             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5608         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5609             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5610         eval test \$${pfx_no_}cc_type = "gcc" &&
5611             add_${pfx}cppflags -D__printf__=__gnu_printf__
5612         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5613     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5614         eval ${pfx}libc_type=msvcrt
5615         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5616             if [ "$pfx" = host_ ]; then
5617                 add_host_cppflags -Dsnprintf=_snprintf
5618             else
5619                 add_compat strtod.o strtod=avpriv_strtod
5620                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5621                                              _snprintf=avpriv_snprintf  \
5622                                              vsnprintf=avpriv_vsnprintf
5623             fi
5624         fi
5625         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5626         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5627         # 0x601 by default unless something else is set by the user.
5628         # This can easily lead to us detecting functions only present
5629         # in such new versions and producing binaries requiring windows 7.0.
5630         # Therefore explicitly set the default to Vista unless the user has
5631         # set something else on the command line.
5632         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5633         # family. For these cases, configure is free to use any functions
5634         # found in the SDK headers by default. (Alternatively, we could force
5635         # _WIN32_WINNT to 0x0602 in that case.)
5636         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5637             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5638 #ifdef WINAPI_FAMILY
5639 #include <winapifamily.h>
5640 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5641 #error not desktop
5642 #endif
5643 #endif
5644 EOF
5645         if [ "$pfx" = "" ]; then
5646             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5647             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5648         fi
5649     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5650         eval ${pfx}libc_type=klibc
5651     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5652         eval ${pfx}libc_type=bionic
5653     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5654         eval ${pfx}libc_type=solaris
5655         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5656     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5657         eval ${pfx}libc_type=djgpp
5658         add_cppflags -U__STRICT_ANSI__
5659         add_cflags "-include $source_path/compat/djgpp/math.h"
5660         add_compat djgpp/math.o
5661     fi
5662     test_${pfx}cc <<EOF
5663 #include <time.h>
5664 void *v = localtime_r;
5665 EOF
5666 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5667 #include <time.h>
5668 void *v = localtime_r;
5669 EOF
5670
5671     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5672 }
5673
5674 probe_libc
5675 probe_libc host_
5676
5677 # hacks for compiler/libc/os combinations
5678
5679 case $libc_type in
5680     bionic)
5681         add_compat strtod.o strtod=avpriv_strtod
5682         ;;
5683 esac
5684
5685 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5686     add_cppflags '-I\$(SRC_PATH)/compat/float'
5687
5688 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5689
5690 set_default libdir
5691 : ${shlibdir_default:="$libdir"}
5692 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5693
5694 set_default $PATHS_LIST
5695 set_default nm
5696
5697 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5698
5699 enable_weak_pic() {
5700     disabled pic && return
5701     enable pic
5702     add_cppflags -DPIC
5703     case "$target_os" in
5704     mingw*|cygwin*|win*)
5705         ;;
5706     *)
5707         add_cflags -fPIC
5708         add_asflags -fPIC
5709         ;;
5710     esac
5711 }
5712
5713 enabled pic && enable_weak_pic
5714
5715 test_cc <<EOF || die "Symbol mangling check failed."
5716 int ff_extern;
5717 EOF
5718 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5719 extern_prefix=${sym%%ff_extern*}
5720
5721 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5722
5723 for restrict_keyword in restrict __restrict__ __restrict ""; do
5724     test_code cc "" "char * $restrict_keyword p" && break
5725 done
5726
5727 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5728
5729 # The global variable ensures the bits appear unchanged in the object file.
5730 test_cc <<EOF || die "endian test failed"
5731 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5732 EOF
5733 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5734
5735 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5736
5737 if ! enabled ppc64 || enabled bigendian; then
5738     disable vsx
5739 fi
5740
5741 check_gas() {
5742     log "check_gas using '$as' as AS"
5743     # :vararg is used on aarch64, arm and ppc altivec
5744     check_as vararg "
5745 .macro m n, y:vararg=0
5746 \n: .int \y
5747 .endm
5748 m x" || return 1
5749     # .altmacro is only used in arm asm
5750     ! enabled arm || check_as gnu_as ".altmacro"
5751 }
5752
5753 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5754     nogas=:
5755     enabled_any arm aarch64 && nogas=die
5756     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5757     as_noop=-v
5758
5759     case $as_type in
5760         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5761         gcc)  gaspp_as_type=gas ;;
5762         *)    gaspp_as_type=$as_type ;;
5763     esac
5764
5765     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5766
5767     test "${as#*gas-preprocessor.pl}" != "$as" ||
5768     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5769         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5770
5771     if ! check_gas ; then
5772         as=${gas:=$as}
5773         check_gas || \
5774             $nogas "GNU assembler not found, install/update gas-preprocessor"
5775     fi
5776
5777     check_as as_func ".func test
5778                       .endfunc"
5779 fi
5780
5781 check_inline_asm inline_asm_labels '"1:\n"'
5782
5783 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5784
5785 if enabled aarch64; then
5786     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5787     # internal assembler in clang 3.3 does not support this instruction
5788     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5789     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5790
5791     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5792
5793 elif enabled alpha; then
5794
5795     check_cflags -mieee
5796
5797 elif enabled arm; then
5798
5799     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5800     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5801 float func(float a, float b){ return a+b; }
5802 EOF
5803     enabled thumb && check_cflags -mthumb || check_cflags -marm
5804
5805     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5806         :
5807     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5808         :
5809     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5810         case "${cross_prefix:-$cc}" in
5811             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5812             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5813 __asm__ (".eabi_attribute 28, 1");
5814 int main(void) { return 0; }
5815 EOF
5816         esac
5817         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5818     fi
5819
5820     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5821     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5822     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5823     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5824     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5825     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5826     enabled setend  && check_insn setend  'setend be'
5827
5828     [ $target_os = linux ] || [ $target_os = android ] ||
5829         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5830             $ARCH_EXT_LIST_ARM
5831
5832     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5833
5834     check_as as_arch_directive ".arch armv7-a"
5835     check_as as_dn_directive   "ra .dn d0.i16"
5836     check_as as_fpu_directive  ".fpu neon"
5837
5838     # llvm's integrated assembler supports .object_arch from llvm 3.5
5839     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5840         check_as as_object_arch ".object_arch armv4"
5841
5842     # MS armasm fails to assemble our PIC constructs
5843     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5844
5845 elif enabled mips; then
5846
5847     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5848     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5849     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5850
5851     # Enable minimum ISA based on selected options
5852     if enabled mips64; then
5853         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5854         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5855         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5856     else
5857         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5858         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5859         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5860         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5861     fi
5862
5863     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5864     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5865     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5866     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5867     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5868     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5869
5870     if enabled bigendian && enabled msa; then
5871         disable msa
5872     fi
5873
5874 elif enabled parisc; then
5875
5876     if enabled gcc; then
5877         case $($cc -dumpversion) in
5878             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5879         esac
5880     fi
5881
5882 elif enabled ppc; then
5883
5884     enable local_aligned
5885
5886     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5887     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5888     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5889     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5890
5891     if enabled altivec; then
5892         check_cflags -maltivec -mabi=altivec
5893
5894         # check if our compiler supports Motorola AltiVec C API
5895         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5896                                     vector signed int v2 = (vector signed int) { 1 };
5897                                     v1 = vec_add(v1, v2);"
5898
5899         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5900     fi
5901
5902     if enabled vsx; then
5903         check_cflags -mvsx &&
5904         check_cc vsx altivec.h "int v[4] = { 0 };
5905                                 vector signed int v1 = vec_vsx_ld(0, v);"
5906     fi
5907
5908     if enabled power8; then
5909         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5910     fi
5911
5912 elif enabled x86; then
5913
5914     check_builtin rdtsc    intrin.h   "__rdtsc()"
5915     check_builtin mm_empty mmintrin.h "_mm_empty()"
5916
5917     enable local_aligned
5918
5919     # check whether EBP is available on x86
5920     # As 'i' is stored on the stack, this program will crash
5921     # if the base pointer is used to access it because the
5922     # base pointer is cleared in the inline assembly code.
5923     check_exec_crash <<EOF && enable ebp_available
5924 volatile int i=0;
5925 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5926 return i;
5927 EOF
5928
5929     # check whether EBX is available on x86
5930     check_inline_asm ebx_available '""::"b"(0)' &&
5931         check_inline_asm ebx_available '"":::"%ebx"'
5932
5933     # check whether xmm clobbers are supported
5934     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5935
5936     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5937         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5938
5939     # check whether binutils is new enough to compile SSSE3/MMXEXT
5940     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5941     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5942
5943     probe_x86asm(){
5944         x86asmexe_probe=$1
5945         if test_cmd $x86asmexe_probe -v; then
5946             x86asmexe=$x86asmexe_probe
5947             x86asm_type=nasm
5948             x86asm_debug="-g -F dwarf"
5949             X86ASMDEP=
5950             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5951         elif test_cmd $x86asmexe_probe --version; then
5952             x86asmexe=$x86asmexe_probe
5953             x86asm_type=yasm
5954             x86asm_debug="-g dwarf2"
5955             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5956             X86ASM_DEPFLAGS=
5957         fi
5958         check_x86asm x86asm "movbe ecx, [5]"
5959     }
5960
5961     if ! disabled_any asm mmx x86asm; then
5962         disable x86asm
5963         for program in $x86asmexe nasm yasm; do
5964             probe_x86asm $program && break
5965         done
5966         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5967         X86ASMFLAGS="-f $objformat"
5968         enabled pic               && append X86ASMFLAGS "-DPIC"
5969         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5970         case "$objformat" in
5971             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5972         esac
5973
5974         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5975         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5976         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5977         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5978         check_x86asm cpunop          "CPU amdnop"
5979     fi
5980
5981     case "$cpu" in
5982         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5983             disable fast_clz
5984         ;;
5985     esac
5986
5987 fi
5988
5989 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5990
5991 check_ldflags -Wl,--as-needed
5992 check_ldflags -Wl,-z,noexecstack
5993
5994 if ! disabled network; then
5995     check_func getaddrinfo $network_extralibs
5996     check_func inet_aton $network_extralibs
5997
5998     check_type netdb.h "struct addrinfo"
5999     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6000     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6001     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6002     check_type poll.h "struct pollfd"
6003     check_type netinet/sctp.h "struct sctp_event_subscribe"
6004     check_struct "sys/socket.h" "struct msghdr" msg_flags
6005     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6006     check_type netinet/in.h "struct sockaddr_in6"
6007     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6008     check_type "sys/types.h sys/socket.h" socklen_t
6009
6010     # Prefer arpa/inet.h over winsock2
6011     if check_headers arpa/inet.h ; then
6012         check_func closesocket
6013     elif check_headers winsock2.h ; then
6014         check_func_headers winsock2.h closesocket -lws2 &&
6015             network_extralibs="-lws2" ||
6016         { check_func_headers winsock2.h closesocket -lws2_32 &&
6017             network_extralibs="-lws2_32"; } || disable winsock2_h network
6018         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6019
6020         check_type ws2tcpip.h socklen_t
6021         check_type ws2tcpip.h "struct addrinfo"
6022         check_type ws2tcpip.h "struct group_source_req"
6023         check_type ws2tcpip.h "struct ip_mreq_source"
6024         check_type ws2tcpip.h "struct ipv6_mreq"
6025         check_type winsock2.h "struct pollfd"
6026         check_struct winsock2.h "struct sockaddr" sa_len
6027         check_type ws2tcpip.h "struct sockaddr_in6"
6028         check_type ws2tcpip.h "struct sockaddr_storage"
6029     else
6030         disable network
6031     fi
6032 fi
6033
6034 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6035 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6036 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6037 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6038 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6039 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6040 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6041
6042 case "$custom_allocator" in
6043     jemalloc)
6044         # jemalloc by default does not use a prefix
6045         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6046     ;;
6047     tcmalloc)
6048         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6049         malloc_prefix=tc_
6050     ;;
6051 esac
6052
6053 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6054 check_func  ${malloc_prefix}memalign            && enable memalign
6055 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6056
6057 check_func  access
6058 check_func_headers stdlib.h arc4random
6059 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6060 check_func  fcntl
6061 check_func  fork
6062 check_func  gethrtime
6063 check_func  getopt
6064 check_func  getrusage
6065 check_func  gettimeofday
6066 check_func  isatty
6067 check_func  mkstemp
6068 check_func  mmap
6069 check_func  mprotect
6070 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6071 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6072 check_func  sched_getaffinity
6073 check_func  setrlimit
6074 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6075 check_func  strerror_r
6076 check_func  sysconf
6077 check_func  sysctl
6078 check_func  usleep
6079
6080 check_func_headers conio.h kbhit
6081 check_func_headers io.h setmode
6082 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6083 check_func_headers mach/mach_time.h mach_absolute_time
6084 check_func_headers stdlib.h getenv
6085 check_func_headers sys/stat.h lstat
6086
6087 check_func_headers windows.h GetModuleHandle
6088 check_func_headers windows.h GetProcessAffinityMask
6089 check_func_headers windows.h GetProcessTimes
6090 check_func_headers windows.h GetStdHandle
6091 check_func_headers windows.h GetSystemTimeAsFileTime
6092 check_func_headers windows.h LoadLibrary
6093 check_func_headers windows.h MapViewOfFile
6094 check_func_headers windows.h PeekNamedPipe
6095 check_func_headers windows.h SetConsoleTextAttribute
6096 check_func_headers windows.h SetConsoleCtrlHandler
6097 check_func_headers windows.h SetDllDirectory
6098 check_func_headers windows.h Sleep
6099 check_func_headers windows.h VirtualAlloc
6100 check_func_headers glob.h glob
6101 enabled xlib &&
6102     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6103
6104 check_headers direct.h
6105 check_headers dirent.h
6106 check_headers dxgidebug.h
6107 check_headers dxva.h
6108 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6109 check_headers io.h
6110 check_headers linux/perf_event.h
6111 check_headers libcrystalhd/libcrystalhd_if.h
6112 check_headers malloc.h
6113 check_headers mftransform.h
6114 check_headers net/udplite.h
6115 check_headers poll.h
6116 check_headers sys/param.h
6117 check_headers sys/resource.h
6118 check_headers sys/select.h
6119 check_headers sys/time.h
6120 check_headers sys/un.h
6121 check_headers termios.h
6122 check_headers unistd.h
6123 check_headers valgrind/valgrind.h
6124 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6125 check_headers windows.h
6126 check_headers X11/extensions/XvMClib.h
6127 check_headers asm/types.h
6128
6129 # it seems there are versions of clang in some distros that try to use the
6130 # gcc headers, which explodes for stdatomic
6131 # so we also check that atomics actually work here
6132 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6133
6134 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6135 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6136     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6137 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6138 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6139 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6140
6141 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6142 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6143 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6144
6145 enabled appkit       && check_apple_framework AppKit
6146 enabled audiotoolbox && check_apple_framework AudioToolbox
6147 enabled avfoundation && check_apple_framework AVFoundation
6148 enabled coreimage    && check_apple_framework CoreImage
6149 enabled videotoolbox && check_apple_framework VideoToolbox
6150
6151 check_apple_framework CoreFoundation
6152 check_apple_framework CoreMedia
6153 check_apple_framework CoreVideo
6154
6155 enabled avfoundation && {
6156     disable coregraphics applicationservices
6157     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6158     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6159
6160 enabled videotoolbox && {
6161     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6162     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6163     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6164     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6165     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6166     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6167 }
6168
6169 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6170
6171 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6172 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6173 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6174 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6175 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6176 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6177
6178 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6179 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6180
6181 if [ -z "$nvccflags" ]; then
6182     nvccflags=$nvccflags_default
6183 fi
6184
6185 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6186     nvccflags="$nvccflags -m64"
6187 else
6188     nvccflags="$nvccflags -m32"
6189 fi
6190
6191 if enabled cuda_nvcc; then
6192     nvccflags="$nvccflags -ptx"
6193 else
6194     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6195     check_nvcc cuda_llvm
6196 fi
6197
6198 if ! disabled ffnvcodec; then
6199     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6200     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6201       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6202       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6203       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6204 fi
6205
6206 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6207
6208 if ! disabled w32threads && ! enabled pthreads; then
6209     check_func_headers "windows.h process.h" _beginthreadex &&
6210         check_type "windows.h" CONDITION_VARIABLE &&
6211         check_type "windows.h" INIT_ONCE &&
6212         enable w32threads || disable w32threads
6213     if ! enabled w32threads && enabled winrt; then
6214         check_func_headers "windows.h" CreateThread &&
6215             enable w32threads || disable w32threads
6216     fi
6217 fi
6218
6219 # check for some common methods of building with pthread support
6220 # do this before the optional library checks as some of them require pthreads
6221 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6222     if check_lib pthreads pthread.h pthread_join   -pthread &&
6223        check_lib pthreads pthread.h pthread_create -pthread; then
6224         add_cflags -pthread
6225     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6226          check_lib pthreads pthread.h pthread_create -pthreads; then
6227         add_cflags -pthreads
6228     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6229          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6230         add_cflags -ldl -pthread
6231     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6232          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6233         :
6234     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6235          check_lib pthreads pthread.h pthread_create -lpthread; then
6236         :
6237     elif check_func pthread_join && check_func pthread_create; then
6238         enable pthreads
6239     fi
6240     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6241
6242     if enabled pthreads; then
6243         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6244         check_func pthread_cancel $pthreads_extralibs
6245     fi
6246 fi
6247
6248 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6249                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6250 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6251 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6252
6253 # On some systems dynamic loading requires no extra linker flags
6254 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6255
6256 check_lib libm math.h sin -lm
6257
6258 atan2f_args=2
6259 copysign_args=2
6260 hypot_args=2
6261 ldexpf_args=2
6262 powf_args=2
6263
6264 for func in $MATH_FUNCS; do
6265     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6266 done
6267
6268 for func in $COMPLEX_FUNCS; do
6269     eval check_complexfunc $func \${${func}_args:-1}
6270 done
6271
6272 # these are off by default, so fail if requested and not available
6273 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6274 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6275 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6276 enabled decklink          && { require_headers DeckLinkAPI.h &&
6277                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6278 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6279 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6280 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6281 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6282 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6283 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6284 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6285                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6286                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6287 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6288 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6289 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6290 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6291 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6292 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6293                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6294                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6295 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6296 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6297 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6298 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6299 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6300 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6301 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6302                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6303                                  warn "using libfdk without pkg-config"; } }
6304 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"
6305 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6306 enabled fontconfig        && enable libfontconfig
6307 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6308 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6309 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6310 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6311 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6312                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6313 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6314                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6315                                done || die "ERROR: libgsm not found"; }
6316 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6317 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6318 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6319 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6320 # While it may appear that require is being used as a pkg-config
6321 # fallback for libmfx, it is actually being used to detect a different
6322 # installation route altogether.  If libmfx is installed via the Intel
6323 # Media SDK or Intel Media Server Studio, these don't come with
6324 # pkg-config support.  Instead, users should make sure that the build
6325 # can find the libraries and headers through other means.
6326 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6327                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6328 if enabled libmfx; then
6329    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6330 fi
6331
6332 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6333 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6334 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6335                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6336 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6337                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6338                                die "ERROR: libnpp not found"; }
6339 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6340 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6341 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6342                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6343                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6344                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6345 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6346 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6347                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6348 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6349 enabled libopus           && {
6350     enabled libopus_decoder && {
6351         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6352     }
6353     enabled libopus_encoder && {
6354         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6355     }
6356 }
6357 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6358 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6359 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6360 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6361 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6362 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6363 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6364 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6365                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6366 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6367 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6368 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6369 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6370 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6371 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6372 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6373 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6374 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6375 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6376                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6377                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6378 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6379 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6380 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6381 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6382 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6383                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6384
6385 enabled libvpx            && {
6386     enabled libvpx_vp8_decoder && {
6387         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6388             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"
6389     }
6390     enabled libvpx_vp8_encoder && {
6391         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6392             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"
6393     }
6394     enabled libvpx_vp9_decoder && {
6395         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6396             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"
6397     }
6398     enabled libvpx_vp9_encoder && {
6399         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6400             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"
6401     }
6402     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6403         die "libvpx enabled but no supported decoders found"
6404     fi
6405 }
6406
6407 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6408 enabled libwebp           && {
6409     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6410     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6411 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6412                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6413                                  warn "using libx264 without pkg-config"; } } &&
6414                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6415                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6416 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6417                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6418 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6419 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6420 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6421 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6422 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6423 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6424                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6425                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6426 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6427 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6428                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6429                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6430                                die "ERROR: mbedTLS not found"; }
6431 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6432 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6433                                { ! enabled cross_compile &&
6434                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6435                                  add_ldflags -L/opt/vc/lib/ &&
6436                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6437                                die "ERROR: mmal not found" &&
6438                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6439 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6440                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6441                                die "ERROR: openal not found"; } &&
6442                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6443                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6444 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6445                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6446                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6447                                die "ERROR: opencl not found"; } &&
6448                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6449                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6450                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6451 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6452                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6453                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6454                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6455                                die "ERROR: opengl not found."
6456                              }
6457 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6458                                { ! enabled cross_compile &&
6459                                  add_cflags -isystem/opt/vc/include/IL &&
6460                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6461                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6462                              enable omx
6463 enabled omx               && require_headers OMX_Core.h
6464 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6465                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6466                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6467                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6468                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6469                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6470                                die "ERROR: openssl not found"; }
6471 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6472 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6473                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6474                                { enabled libdrm ||
6475                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6476                              }
6477 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6478
6479
6480 if enabled gcrypt; then
6481     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6482     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6483         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6484         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6485         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6486             die "ERROR: gcrypt not found"
6487         add_cflags $gcrypt_cflags
6488     else
6489         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6490     fi
6491 fi
6492
6493 if enabled sdl2; then
6494     SDL2_CONFIG="${cross_prefix}sdl2-config"
6495     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6496     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6497         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6498         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6499         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6500         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6501         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6502             enable sdl2
6503     fi
6504     if test $target_os = "mingw32"; then
6505         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6506     fi
6507 fi
6508
6509 if enabled decklink; then
6510     case $target_os in
6511         mingw32*|mingw64*|win32|win64)
6512             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6513             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6514             ;;
6515     esac
6516 fi
6517
6518 enabled securetransport &&
6519     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6520     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6521         disable securetransport
6522
6523 enabled securetransport &&
6524     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6525
6526 enabled schannel &&
6527     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6528     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6529     schannel_extralibs="-lsecur32" ||
6530         disable schannel
6531
6532 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6533 enabled makeinfo \
6534     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6535     && enable makeinfo_html || disable makeinfo_html
6536 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6537 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6538 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6539 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6540
6541 # check V4L2 codecs available in the API
6542 if enabled v4l2_m2m; then
6543     check_headers linux/fb.h
6544     check_headers linux/videodev2.h
6545     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6546     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6547     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6548     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6549     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6550     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6551     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6552     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6553     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6554     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6555     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6556 fi
6557
6558 check_headers sys/videoio.h
6559 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6560
6561 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6562 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6563 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6564 # w32api 3.12 had it defined wrong
6565 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6566
6567 check_type "dshow.h" IBaseFilter
6568
6569 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6570 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6571     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6572     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6573     check_headers "dev/ic/bt8xx.h"
6574
6575 if check_struct sys/soundcard.h audio_buf_info bytes; then
6576     enable_sanitized sys/soundcard.h
6577 else
6578     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6579     #include <sys/soundcard.h>
6580     audio_buf_info abc;
6581 EOF
6582 fi
6583
6584 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6585                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6586
6587 enabled libjack &&
6588     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6589
6590 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6591
6592 if enabled libcdio; then
6593     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6594     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6595     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6596     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6597     die "ERROR: No usable libcdio/cdparanoia found"
6598 fi
6599
6600 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6601     disable libxcb_shm libxcb_shape libxcb_xfixes
6602
6603 if enabled libxcb; then
6604     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6605     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6606     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6607 fi
6608
6609 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6610
6611 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6612 # the desktop api partition
6613 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6614 #ifdef WINAPI_FAMILY
6615 #include <winapifamily.h>
6616 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6617 #error desktop, not uwp
6618 #else
6619 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6620 #endif
6621 #else
6622 #error no family set
6623 #endif
6624 EOF
6625
6626 enabled vaapi &&
6627     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6628
6629 if enabled vaapi; then
6630     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6631
6632     if enabled xlib; then
6633         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6634     fi
6635
6636     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6637
6638     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6639     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6640     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6641     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6642     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6643     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6644     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6645     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6646 fi
6647
6648 if enabled_all opencl libdrm ; then
6649     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6650         enable opencl_drm_beignet
6651     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6652         enable opencl_drm_arm
6653 fi
6654
6655 if enabled_all opencl vaapi ; then
6656     if enabled opencl_drm_beignet ; then
6657         enable opencl_vaapi_beignet
6658     else
6659         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6660             enable opencl_vaapi_intel_media
6661     fi
6662 fi
6663
6664 if enabled_all opencl dxva2 ; then
6665     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6666         enable opencl_dxva2
6667 fi
6668
6669 if enabled_all opencl d3d11va ; then
6670     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6671         enable opencl_d3d11
6672 fi
6673
6674 enabled vdpau &&
6675     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6676
6677 enabled vdpau &&
6678     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6679
6680 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6681
6682 enabled vulkan &&
6683     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6684
6685 if enabled x86; then
6686     case $target_os in
6687         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6688             ;;
6689         *)
6690             disable ffnvcodec cuvid nvdec nvenc
6691             ;;
6692     esac
6693 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6694     case $target_os in
6695         linux)
6696             ;;
6697         *)
6698             disable ffnvcodec cuvid nvdec nvenc
6699             ;;
6700     esac
6701 else
6702     disable ffnvcodec cuvid nvdec nvenc
6703 fi
6704
6705 enabled ffnvcodec && enable cuda
6706
6707 enabled nvenc &&
6708     test_cc -I$source_path <<EOF || disable nvenc
6709 #include <ffnvcodec/nvEncodeAPI.h>
6710 NV_ENCODE_API_FUNCTION_LIST flist;
6711 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6712 int main(void) { return 0; }
6713 EOF
6714
6715 enabled amf &&
6716     check_cpp_condition amf "AMF/core/Version.h" \
6717         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6718
6719 # Funny iconv installations are not unusual, so check it after all flags have been set
6720 if enabled libc_iconv; then
6721     check_func_headers iconv.h iconv
6722 elif enabled iconv; then
6723     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6724 fi
6725
6726 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6727
6728 # add some useful compiler flags if supported
6729 check_cflags -Wdeclaration-after-statement
6730 check_cflags -Wall
6731 check_cflags -Wdisabled-optimization
6732 check_cflags -Wpointer-arith
6733 check_cflags -Wredundant-decls
6734 check_cflags -Wwrite-strings
6735 check_cflags -Wtype-limits
6736 check_cflags -Wundef
6737 check_cflags -Wmissing-prototypes
6738 check_cflags -Wno-pointer-to-int-cast
6739 check_cflags -Wstrict-prototypes
6740 check_cflags -Wempty-body
6741
6742 if enabled extra_warnings; then
6743     check_cflags -Wcast-qual
6744     check_cflags -Wextra
6745     check_cflags -Wpedantic
6746 fi
6747
6748 check_disable_warning(){
6749     warning_flag=-W${1#-Wno-}
6750     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6751 }
6752
6753 test_cflags -Werror=unused-command-line-argument &&
6754     append unknown_warning_flags "-Werror=unused-command-line-argument"
6755 test_cflags -Werror=unknown-warning-option &&
6756     append unknown_warning_flags "-Werror=unknown-warning-option"
6757
6758 check_disable_warning -Wno-parentheses
6759 check_disable_warning -Wno-switch
6760 check_disable_warning -Wno-format-zero-length
6761 check_disable_warning -Wno-pointer-sign
6762 check_disable_warning -Wno-unused-const-variable
6763 check_disable_warning -Wno-bool-operation
6764 check_disable_warning -Wno-char-subscripts
6765
6766 check_disable_warning_headers(){
6767     warning_flag=-W${1#-Wno-}
6768     test_cflags $warning_flag && add_cflags_headers $1
6769 }
6770
6771 check_disable_warning_headers -Wno-deprecated-declarations
6772 check_disable_warning_headers -Wno-unused-variable
6773
6774 test_cc <<EOF && enable blocks_extension
6775 void (^block)(void);
6776 EOF
6777
6778 # add some linker flags
6779 check_ldflags -Wl,--warn-common
6780 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6781 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6782 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6783
6784 # add some strip flags
6785 check_stripflags -x
6786
6787 enabled neon_clobber_test &&
6788     check_ldflags -Wl,--wrap,avcodec_open2              \
6789                   -Wl,--wrap,avcodec_decode_audio4      \
6790                   -Wl,--wrap,avcodec_decode_video2      \
6791                   -Wl,--wrap,avcodec_decode_subtitle2   \
6792                   -Wl,--wrap,avcodec_encode_audio2      \
6793                   -Wl,--wrap,avcodec_encode_video2      \
6794                   -Wl,--wrap,avcodec_encode_subtitle    \
6795                   -Wl,--wrap,avcodec_send_packet        \
6796                   -Wl,--wrap,avcodec_receive_packet     \
6797                   -Wl,--wrap,avcodec_send_frame         \
6798                   -Wl,--wrap,avcodec_receive_frame      \
6799                   -Wl,--wrap,swr_convert                \
6800                   -Wl,--wrap,avresample_convert ||
6801     disable neon_clobber_test
6802
6803 enabled xmm_clobber_test &&
6804     check_ldflags -Wl,--wrap,avcodec_open2              \
6805                   -Wl,--wrap,avcodec_decode_audio4      \
6806                   -Wl,--wrap,avcodec_decode_video2      \
6807                   -Wl,--wrap,avcodec_decode_subtitle2   \
6808                   -Wl,--wrap,avcodec_encode_audio2      \
6809                   -Wl,--wrap,avcodec_encode_video2      \
6810                   -Wl,--wrap,avcodec_encode_subtitle    \
6811                   -Wl,--wrap,avcodec_send_packet        \
6812                   -Wl,--wrap,avcodec_receive_packet     \
6813                   -Wl,--wrap,avcodec_send_frame         \
6814                   -Wl,--wrap,avcodec_receive_frame      \
6815                   -Wl,--wrap,swr_convert                \
6816                   -Wl,--wrap,avresample_convert         \
6817                   -Wl,--wrap,sws_scale ||
6818     disable xmm_clobber_test
6819
6820 check_ld "cc" proper_dce <<EOF
6821 extern const int array[512];
6822 static inline int func(void) { return array[0]; }
6823 int main(void) { return 0; }
6824 EOF
6825
6826 if enabled proper_dce; then
6827     echo "X { local: *; };" > $TMPV
6828     if test_ldflags -Wl,${version_script},$TMPV; then
6829         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6830         quotes='""'
6831         test_cc <<EOF && enable symver_asm_label
6832 void ff_foo(void) __asm__ ("av_foo@VERSION");
6833 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6834 EOF
6835         test_cc <<EOF && enable symver_gnu_asm
6836 __asm__(".symver ff_foo,av_foo@VERSION");
6837 void ff_foo(void) {}
6838 EOF
6839     fi
6840 fi
6841
6842 if [ -z "$optflags" ]; then
6843     if enabled small; then
6844         optflags=$cflags_size
6845     elif enabled optimizations; then
6846         optflags=$cflags_speed
6847     else
6848         optflags=$cflags_noopt
6849     fi
6850 fi
6851
6852 check_optflags(){
6853     check_cflags "$@"
6854     enabled lto && check_ldflags "$@"
6855 }
6856
6857 check_optflags $optflags
6858 check_optflags -fno-math-errno
6859 check_optflags -fno-signed-zeros
6860
6861 if enabled lto; then
6862     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6863     check_cflags  -flto
6864     check_ldflags -flto $cpuflags
6865     disable inline_asm_direct_symbol_refs
6866 fi
6867
6868 enabled ftrapv && check_cflags -ftrapv
6869
6870 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6871 int x;
6872 EOF
6873
6874
6875 if enabled icc; then
6876     # Just warnings, no remarks
6877     check_cflags -w1
6878     # -wd: Disable following warnings
6879     # 144, 167, 556: -Wno-pointer-sign
6880     # 188: enumerated type mixed with another type
6881     # 1292: attribute "foo" ignored
6882     # 1419: external declaration in primary source file
6883     # 10006: ignoring unknown option -fno-signed-zeros
6884     # 10148: ignoring unknown option -Wno-parentheses
6885     # 10156: ignoring option '-W'; no argument required
6886     # 13200: No EMMS instruction before call to function
6887     # 13203: No EMMS instruction before return from function
6888     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6889     # 11030: Warning unknown option --as-needed
6890     # 10156: ignoring option '-export'; no argument required
6891     check_ldflags -wd10156,11030
6892     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6893     enable ebp_available
6894     # The test above does not test linking
6895     enabled lto && disable symver_asm_label
6896     if enabled x86_32; then
6897         icc_version=$($cc -dumpversion)
6898         test ${icc_version%%.*} -ge 11 &&
6899             check_cflags -falign-stack=maintain-16-byte ||
6900             disable aligned_stack
6901     fi
6902 elif enabled gcc; then
6903     check_optflags -fno-tree-vectorize
6904     check_cflags -Werror=format-security
6905     check_cflags -Werror=implicit-function-declaration
6906     check_cflags -Werror=missing-prototypes
6907     check_cflags -Werror=return-type
6908     check_cflags -Werror=vla
6909     check_cflags -Wformat
6910     check_cflags -fdiagnostics-color=auto
6911     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6912     if enabled x86_32; then
6913         case $target_os in
6914         *bsd*)
6915             # BSDs don't guarantee a 16 byte aligned stack, but we can
6916             # request GCC to try to maintain 16 byte alignment throughout
6917             # function calls. Library entry points that might call assembly
6918             # functions align the stack. (The parameter means 2^4 bytes.)
6919             check_cflags -mpreferred-stack-boundary=4
6920             ;;
6921         esac
6922     fi
6923 elif enabled llvm_gcc; then
6924     check_cflags -mllvm -stack-alignment=16
6925 elif enabled clang; then
6926     if enabled x86_32; then
6927         # Clang doesn't support maintaining alignment without assuming the
6928         # same alignment in every function. If 16 byte alignment would be
6929         # enabled, one would also have to either add attribute_align_arg on
6930         # every single entry point into the libraries or enable -mstackrealign
6931         # (doing stack realignment in every single function).
6932         case $target_os in
6933         mingw32|win32|*bsd*)
6934             disable aligned_stack
6935             ;;
6936         *)
6937             check_cflags -mllvm -stack-alignment=16
6938             check_cflags -mstack-alignment=16
6939             ;;
6940         esac
6941     else
6942         check_cflags -mllvm -stack-alignment=16
6943         check_cflags -mstack-alignment=16
6944     fi
6945     check_cflags -Qunused-arguments
6946     check_cflags -Werror=implicit-function-declaration
6947     check_cflags -Werror=missing-prototypes
6948     check_cflags -Werror=return-type
6949 elif enabled cparser; then
6950     add_cflags -Wno-missing-variable-declarations
6951     add_cflags -Wno-empty-statement
6952 elif enabled armcc; then
6953     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6954     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6955     # 2523: use of inline assembly is deprecated
6956     add_cflags -W${armcc_opt},--diag_suppress=2523
6957     add_cflags -W${armcc_opt},--diag_suppress=1207
6958     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6959     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6960     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6961     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6962 elif enabled pathscale; then
6963     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6964     disable inline_asm
6965 elif enabled_any msvc icl; then
6966     enabled x86_32 && disable aligned_stack
6967     enabled_all x86_32 debug && add_cflags -Oy-
6968     enabled debug && add_ldflags -debug
6969     enable pragma_deprecated
6970     if enabled icl; then
6971         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6972         # (correctly) on icl 13.x.
6973         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6974             add_cflags -Qansi-alias
6975         # Some inline asm is not compilable in debug
6976         if enabled debug; then
6977             disable ebp_available
6978             disable ebx_available
6979         fi
6980     fi
6981     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6982     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6983     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6984     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6985     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6986     # MSVC 2013 and newer can handle it fine.
6987     # If this declspec fails, force including stdlib.h before the restrict redefinition
6988     # happens in config.h.
6989     if [ $restrict_keyword != restrict ]; then
6990         test_cc <<EOF || add_cflags -FIstdlib.h
6991 __declspec($restrict_keyword) void *foo(int);
6992 EOF
6993     fi
6994     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6995     # Issue has been fixed in MSVC v19.00.24218.
6996     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6997         check_cflags -d2SSAOptimizer-
6998     # enable utf-8 source processing on VS2015 U2 and newer
6999     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7000         add_cflags -utf-8
7001 fi
7002
7003 for pfx in "" host_; do
7004     varname=${pfx%_}cc_type
7005     eval "type=\$$varname"
7006     if [ "$type" = "msvc" ]; then
7007         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7008 static inline int foo(int a) { return a; }
7009 EOF
7010     fi
7011 done
7012
7013 case $as_type in
7014     clang)
7015         add_asflags -Qunused-arguments
7016     ;;
7017 esac
7018
7019 case $ld_type in
7020     clang)
7021         check_ldflags -Qunused-arguments
7022     ;;
7023 esac
7024
7025 enable frame_thread_encoder
7026
7027 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7028
7029 check_deps $CONFIG_LIST       \
7030            $CONFIG_EXTRA      \
7031            $HAVE_LIST         \
7032            $ALL_COMPONENTS    \
7033
7034 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"
7035 enabled avresample && warn "Building with deprecated library libavresample"
7036
7037 case $target_os in
7038 haiku)
7039     disable memalign
7040     disable posix_memalign
7041     ;;
7042 *-dos|freedos|opendos)
7043     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7044         disable memalign
7045     fi
7046     ;;
7047 esac
7048
7049 flatten_extralibs(){
7050     nested_entries=
7051     list_name=$1
7052     eval list=\$${1}
7053     for entry in $list; do
7054         entry_copy=$entry
7055         resolve entry_copy
7056         flat_entries=
7057         for e in $entry_copy; do
7058             case $e in
7059                 *_extralibs) nested_entries="$nested_entries$e ";;
7060                           *) flat_entries="$flat_entries$e ";;
7061             esac
7062         done
7063         eval $entry="\$flat_entries"
7064     done
7065     append $list_name "$nested_entries"
7066
7067     resolve nested_entries
7068     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7069         flatten_extralibs $list_name
7070     fi
7071 }
7072
7073 flatten_extralibs_wrapper(){
7074     list_name=$1
7075     flatten_extralibs $list_name
7076     unique $list_name
7077     resolve $list_name
7078     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7079     eval printf \''%s'\' \""\$$list_name"\"
7080 }
7081
7082 for linkunit in $LIBRARY_LIST; do
7083     unset current_extralibs
7084     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7085     for comp in ${components}; do
7086         enabled $comp || continue
7087         comp_extralibs="${comp}_extralibs"
7088         append current_extralibs $comp_extralibs
7089     done
7090     eval prepend ${linkunit}_extralibs $current_extralibs
7091 done
7092
7093 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7094     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7095 done
7096
7097 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7098
7099 for thread in $THREADS_LIST; do
7100     if enabled $thread; then
7101         test -n "$thread_type" &&
7102             die "ERROR: Only one thread type must be selected." ||
7103             thread_type="$thread"
7104     fi
7105 done
7106
7107 if disabled stdatomic; then
7108     if enabled atomics_gcc; then
7109         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7110     elif enabled atomics_win32; then
7111         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7112     elif enabled atomics_suncc; then
7113         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7114     elif enabled pthreads; then
7115         add_compat atomics/pthread/stdatomic.o
7116         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7117     else
7118         enabled threads && die "Threading is enabled, but no atomics are available"
7119         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7120     fi
7121 fi
7122
7123 # Check if requested libraries were found.
7124 for lib in $AUTODETECT_LIBS; do
7125     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7126 done
7127
7128 enabled zlib && add_cppflags -DZLIB_CONST
7129
7130 # conditional library dependencies, in any order
7131 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7132 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7133 enabled afir_filter         && prepend avfilter_deps "avcodec"
7134 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7135 enabled aresample_filter    && prepend avfilter_deps "swresample"
7136 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7137 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7138 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7139 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7140 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7141 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7142 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7143 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7144 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7145 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7146 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7147 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7148 enabled pan_filter          && prepend avfilter_deps "swresample"
7149 enabled pp_filter           && prepend avfilter_deps "postproc"
7150 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7151 enabled resample_filter && prepend avfilter_deps "avresample"
7152 enabled sab_filter          && prepend avfilter_deps "swscale"
7153 enabled scale_filter    && prepend avfilter_deps "swscale"
7154 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7155 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7156 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7157 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7158 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7159 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7160 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7161 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7162 enabled spp_filter          && prepend avfilter_deps "avcodec"
7163 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7164 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7165 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7166 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7167
7168 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7169
7170 #FIXME
7171 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7172     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7173
7174 enabled opus_decoder    && prepend avcodec_deps "swresample"
7175
7176 # reorder the items at var $1 to align with the items order at var $2 .
7177 # die if an item at $1 is not at $2 .
7178 reorder_by(){
7179     eval rb_in=\$$1
7180     eval rb_ordered=\$$2
7181
7182     for rb in $rb_in; do
7183         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7184     done
7185
7186     rb_out=
7187     for rb in $rb_ordered; do
7188         is_in $rb $rb_in && rb_out="$rb_out$rb "
7189     done
7190     eval $1=\$rb_out
7191 }
7192
7193 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7194 # within a set of N items, N expansions are enough to expose a cycle.
7195 expand_deps(){
7196     unique ${1}_deps  # required for the early break test.
7197     for dummy in $LIBRARY_LIST; do  # N iteratios
7198         eval deps=\$${1}_deps
7199         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7200         unique ${1}_deps
7201         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7202     done
7203
7204     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7205     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7206 }
7207
7208 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7209 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7210
7211 map 'expand_deps $v' $LIBRARY_LIST
7212
7213 if test "$quiet" != "yes"; then
7214
7215 echo "install prefix            $prefix"
7216 echo "source path               $source_path"
7217 echo "C compiler                $cc"
7218 echo "C library                 $libc_type"
7219 if test "$host_cc" != "$cc"; then
7220     echo "host C compiler           $host_cc"
7221     echo "host C library            $host_libc_type"
7222 fi
7223 echo "ARCH                      $arch ($cpu)"
7224 if test "$build_suffix" != ""; then
7225     echo "build suffix              $build_suffix"
7226 fi
7227 if test "$progs_suffix" != ""; then
7228     echo "progs suffix              $progs_suffix"
7229 fi
7230 if test "$extra_version" != ""; then
7231     echo "version string suffix     $extra_version"
7232 fi
7233 echo "big-endian                ${bigendian-no}"
7234 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7235 if enabled x86; then
7236     echo "standalone assembly       ${x86asm-no}"
7237     echo "x86 assembler             ${x86asmexe}"
7238     echo "MMX enabled               ${mmx-no}"
7239     echo "MMXEXT enabled            ${mmxext-no}"
7240     echo "3DNow! enabled            ${amd3dnow-no}"
7241     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7242     echo "SSE enabled               ${sse-no}"
7243     echo "SSSE3 enabled             ${ssse3-no}"
7244     echo "AESNI enabled             ${aesni-no}"
7245     echo "AVX enabled               ${avx-no}"
7246     echo "AVX2 enabled              ${avx2-no}"
7247     echo "AVX-512 enabled           ${avx512-no}"
7248     echo "XOP enabled               ${xop-no}"
7249     echo "FMA3 enabled              ${fma3-no}"
7250     echo "FMA4 enabled              ${fma4-no}"
7251     echo "i686 features enabled     ${i686-no}"
7252     echo "CMOV is fast              ${fast_cmov-no}"
7253     echo "EBX available             ${ebx_available-no}"
7254     echo "EBP available             ${ebp_available-no}"
7255 fi
7256 if enabled aarch64; then
7257     echo "NEON enabled              ${neon-no}"
7258     echo "VFP enabled               ${vfp-no}"
7259 fi
7260 if enabled arm; then
7261     echo "ARMv5TE enabled           ${armv5te-no}"
7262     echo "ARMv6 enabled             ${armv6-no}"
7263     echo "ARMv6T2 enabled           ${armv6t2-no}"
7264     echo "VFP enabled               ${vfp-no}"
7265     echo "NEON enabled              ${neon-no}"
7266     echo "THUMB enabled             ${thumb-no}"
7267 fi
7268 if enabled mips; then
7269     echo "MIPS FPU enabled          ${mipsfpu-no}"
7270     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7271     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7272     echo "MIPS MSA enabled          ${msa-no}"
7273     echo "MIPS MSA2 enabled         ${msa2-no}"
7274     echo "LOONGSON MMI enabled      ${mmi-no}"
7275 fi
7276 if enabled ppc; then
7277     echo "AltiVec enabled           ${altivec-no}"
7278     echo "VSX enabled               ${vsx-no}"
7279     echo "POWER8 enabled            ${power8-no}"
7280     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7281     echo "dcbzl available           ${dcbzl-no}"
7282 fi
7283 echo "debug symbols             ${debug-no}"
7284 echo "strip symbols             ${stripping-no}"
7285 echo "optimize for size         ${small-no}"
7286 echo "optimizations             ${optimizations-no}"
7287 echo "static                    ${static-no}"
7288 echo "shared                    ${shared-no}"
7289 echo "postprocessing support    ${postproc-no}"
7290 echo "network support           ${network-no}"
7291 echo "threading support         ${thread_type-no}"
7292 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7293 echo "texi2html enabled         ${texi2html-no}"
7294 echo "perl enabled              ${perl-no}"
7295 echo "pod2man enabled           ${pod2man-no}"
7296 echo "makeinfo enabled          ${makeinfo-no}"
7297 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7298 test -n "$random_seed" &&
7299     echo "random seed               ${random_seed}"
7300 echo
7301
7302 echo "External libraries:"
7303 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7304 echo
7305
7306 echo "External libraries providing hardware acceleration:"
7307 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7308 echo
7309
7310 echo "Libraries:"
7311 print_enabled '' $LIBRARY_LIST | print_in_columns
7312 echo
7313
7314 echo "Programs:"
7315 print_enabled '' $PROGRAM_LIST | print_in_columns
7316 echo
7317
7318 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7319     echo "Enabled ${type}s:"
7320     eval list=\$$(toupper $type)_LIST
7321     print_enabled '_*' $list | print_in_columns
7322     echo
7323 done
7324
7325 if test -n "$ignore_tests"; then
7326     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7327     echo "Ignored FATE tests:"
7328     echo $ignore_tests | print_in_columns
7329     echo
7330 fi
7331
7332 echo "License: $license"
7333
7334 fi # test "$quiet" != "yes"
7335
7336 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7337     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7338         if disabled $cfg; then
7339             varname=${cfg}_disable_reason
7340             eval "warn \"Disabled $cfg because \$$varname\""
7341         fi
7342     done
7343 fi
7344
7345 if test -n "$WARNINGS"; then
7346     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7347     enabled fatal_warnings && exit 1
7348 fi
7349
7350 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7351
7352 esc(){
7353     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7354 }
7355
7356 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7357
7358 enabled stripping || strip="echo skipping strip"
7359 enabled stripping || striptype=""
7360
7361 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7362
7363 cat > ffbuild/config.mak <<EOF
7364 # Automatically generated by configure - do not modify!
7365 ifndef FFMPEG_CONFIG_MAK
7366 FFMPEG_CONFIG_MAK=1
7367 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7368 prefix=$prefix
7369 LIBDIR=\$(DESTDIR)$libdir
7370 SHLIBDIR=\$(DESTDIR)$shlibdir
7371 INCDIR=\$(DESTDIR)$incdir
7372 BINDIR=\$(DESTDIR)$bindir
7373 DATADIR=\$(DESTDIR)$datadir
7374 DOCDIR=\$(DESTDIR)$docdir
7375 MANDIR=\$(DESTDIR)$mandir
7376 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7377 INSTALL_NAME_DIR=$install_name_dir
7378 SRC_PATH=$source_path
7379 SRC_LINK=$source_link
7380 ifndef MAIN_MAKEFILE
7381 SRC_PATH:=\$(SRC_PATH:.%=..%)
7382 endif
7383 CC_IDENT=$cc_ident
7384 ARCH=$arch
7385 INTRINSICS=$intrinsics
7386 EXTERN_PREFIX=$extern_prefix
7387 CC=$cc
7388 CXX=$cxx
7389 AS=$as
7390 OBJCC=$objcc
7391 LD=$ld
7392 DEPCC=$dep_cc
7393 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7394 DEPAS=$as
7395 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7396 X86ASM=$x86asmexe
7397 DEPX86ASM=$x86asmexe
7398 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7399 AR=$ar
7400 ARFLAGS=$arflags
7401 AR_O=$ar_o
7402 AR_CMD=$ar
7403 NM_CMD=$nm
7404 RANLIB=$ranlib
7405 STRIP=$strip
7406 STRIPTYPE=$striptype
7407 NVCC=$nvcc
7408 CP=cp -p
7409 LN_S=$ln_s
7410 CPPFLAGS=$CPPFLAGS
7411 CFLAGS=$CFLAGS
7412 CXXFLAGS=$CXXFLAGS
7413 OBJCFLAGS=$OBJCFLAGS
7414 ASFLAGS=$ASFLAGS
7415 NVCCFLAGS=$nvccflags
7416 AS_C=$AS_C
7417 AS_O=$AS_O
7418 OBJCC_C=$OBJCC_C
7419 OBJCC_E=$OBJCC_E
7420 OBJCC_O=$OBJCC_O
7421 CC_C=$CC_C
7422 CC_E=$CC_E
7423 CC_O=$CC_O
7424 CXX_C=$CXX_C
7425 CXX_O=$CXX_O
7426 NVCC_C=$NVCC_C
7427 NVCC_O=$NVCC_O
7428 LD_O=$LD_O
7429 X86ASM_O=$X86ASM_O
7430 LD_LIB=$LD_LIB
7431 LD_PATH=$LD_PATH
7432 DLLTOOL=$dlltool
7433 WINDRES=$windres
7434 DEPWINDRES=$dep_cc
7435 DOXYGEN=$doxygen
7436 LDFLAGS=$LDFLAGS
7437 LDEXEFLAGS=$LDEXEFLAGS
7438 LDSOFLAGS=$LDSOFLAGS
7439 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7440 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7441 X86ASMFLAGS=$X86ASMFLAGS
7442 BUILDSUF=$build_suffix
7443 PROGSSUF=$progs_suffix
7444 FULLNAME=$FULLNAME
7445 LIBPREF=$LIBPREF
7446 LIBSUF=$LIBSUF
7447 LIBNAME=$LIBNAME
7448 SLIBPREF=$SLIBPREF
7449 SLIBSUF=$SLIBSUF
7450 EXESUF=$EXESUF
7451 EXTRA_VERSION=$extra_version
7452 CCDEP=$CCDEP
7453 CXXDEP=$CXXDEP
7454 CCDEP_FLAGS=$CCDEP_FLAGS
7455 ASDEP=$ASDEP
7456 ASDEP_FLAGS=$ASDEP_FLAGS
7457 X86ASMDEP=$X86ASMDEP
7458 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7459 CC_DEPFLAGS=$CC_DEPFLAGS
7460 AS_DEPFLAGS=$AS_DEPFLAGS
7461 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7462 HOSTCC=$host_cc
7463 HOSTLD=$host_ld
7464 HOSTCFLAGS=$host_cflags
7465 HOSTCPPFLAGS=$host_cppflags
7466 HOSTEXESUF=$HOSTEXESUF
7467 HOSTLDFLAGS=$host_ldflags
7468 HOSTEXTRALIBS=$host_extralibs
7469 DEPHOSTCC=$host_cc
7470 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7471 HOSTCCDEP=$HOSTCCDEP
7472 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7473 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7474 HOSTCC_C=$HOSTCC_C
7475 HOSTCC_O=$HOSTCC_O
7476 HOSTLD_O=$HOSTLD_O
7477 TARGET_EXEC=$target_exec $target_exec_args
7478 TARGET_PATH=$target_path
7479 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7480 CFLAGS-ffplay=${sdl2_cflags}
7481 CFLAGS_HEADERS=$CFLAGS_HEADERS
7482 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7483 EXTRALIBS=$extralibs
7484 COMPAT_OBJS=$compat_objs
7485 INSTALL=$install
7486 LIBTARGET=${LIBTARGET}
7487 SLIBNAME=${SLIBNAME}
7488 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7489 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7490 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7491 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7492 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7493 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7494 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7495 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7496 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7497 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7498 NOREDZONE_FLAGS=$noredzone_flags
7499 LIBFUZZER_PATH=$libfuzzer_path
7500 IGNORE_TESTS=$ignore_tests
7501 EOF
7502
7503 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7504
7505 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7506     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7507 done
7508
7509 cat > $TMPH <<EOF
7510 /* Automatically generated by configure - do not modify! */
7511 #ifndef FFMPEG_CONFIG_H
7512 #define FFMPEG_CONFIG_H
7513 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7514 #define FFMPEG_LICENSE "$(c_escape $license)"
7515 #define CONFIG_THIS_YEAR 2020
7516 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7517 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7518 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7519 #define av_restrict $restrict_keyword
7520 #define EXTERN_PREFIX "${extern_prefix}"
7521 #define EXTERN_ASM ${extern_prefix}
7522 #define BUILDSUF "$build_suffix"
7523 #define SLIBSUF "$SLIBSUF"
7524 #define HAVE_MMX2 HAVE_MMXEXT
7525 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7526 EOF
7527
7528 test -n "$assert_level" &&
7529     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7530
7531 test -n "$malloc_prefix" &&
7532     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7533
7534 if enabled x86asm; then
7535     append config_files $TMPASM
7536     cat > $TMPASM <<EOF
7537 ; Automatically generated by configure - do not modify!
7538 EOF
7539 fi
7540
7541 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7542
7543
7544 mkdir -p doc
7545 mkdir -p tests
7546 mkdir -p tests/api
7547 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7548
7549 print_config ARCH_   "$config_files" $ARCH_LIST
7550 print_config HAVE_   "$config_files" $HAVE_LIST
7551 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7552                                      $CONFIG_EXTRA      \
7553                                      $ALL_COMPONENTS    \
7554
7555 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7556 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7557
7558 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7559 cp_if_changed $TMPH config.h
7560 touch ffbuild/.config
7561
7562 enabled x86asm && cp_if_changed $TMPASM config.asm
7563
7564 cat > $TMPH <<EOF
7565 /* Generated by ffmpeg configure */
7566 #ifndef AVUTIL_AVCONFIG_H
7567 #define AVUTIL_AVCONFIG_H
7568 EOF
7569
7570 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7571
7572 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7573
7574 cp_if_changed $TMPH libavutil/avconfig.h
7575
7576 # full_filter_name_foo=vf_foo
7577 # full_filter_name_bar=asrc_bar
7578 # ...
7579 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7580
7581 # generate the lists of enabled components
7582 print_enabled_components(){
7583     file=$1
7584     struct_name=$2
7585     name=$3
7586     shift 3
7587     echo "static const $struct_name * const $name[] = {" > $TMPH
7588     for c in $*; do
7589         if enabled $c; then
7590             case $name in
7591                 filter_list)
7592                     eval c=\$full_filter_name_${c%_filter}
7593                 ;;
7594                 indev_list)
7595                     c=${c%_indev}_demuxer
7596                 ;;
7597                 outdev_list)
7598                     c=${c%_outdev}_muxer
7599                 ;;
7600             esac
7601             printf "    &ff_%s,\n" $c >> $TMPH
7602         fi
7603     done
7604     if [ "$name" = "filter_list" ]; then
7605         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7606             printf "    &ff_%s,\n" $c >> $TMPH
7607         done
7608     fi
7609     echo "    NULL };" >> $TMPH
7610     cp_if_changed $TMPH $file
7611 }
7612
7613 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7614 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7615 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7616 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7617 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7618 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7619 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7620 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7621 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7622
7623 # Settings for pkg-config files
7624
7625 cat > $TMPH <<EOF
7626 # Automatically generated by configure - do not modify!
7627 shared=$shared
7628 build_suffix=$build_suffix
7629 prefix=$prefix
7630 libdir=$libdir
7631 incdir=$incdir
7632 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7633 source_path=${source_path}
7634 LIBPREF=${LIBPREF}
7635 LIBSUF=${LIBSUF}
7636 extralibs_avutil="$avutil_extralibs"
7637 extralibs_avcodec="$avcodec_extralibs"
7638 extralibs_avformat="$avformat_extralibs"
7639 extralibs_avdevice="$avdevice_extralibs"
7640 extralibs_avfilter="$avfilter_extralibs"
7641 extralibs_avresample="$avresample_extralibs"
7642 extralibs_postproc="$postproc_extralibs"
7643 extralibs_swscale="$swscale_extralibs"
7644 extralibs_swresample="$swresample_extralibs"
7645 EOF
7646
7647 for lib in $LIBRARY_LIST; do
7648     lib_deps="$(eval echo \$${lib}_deps)"
7649     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7650 done
7651
7652 cp_if_changed $TMPH ffbuild/config.sh