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