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