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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libopus will enable linking to
 194   libopus and allow the libopus encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libopus.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libuavs3d       enable AVS3 decoding via libuavs3d [no]
 281   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 282   --enable-libvidstab      enable video stabilization using vid.stab [no]
 283   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 284   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 285   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 286                            native implementation exists [no]
 287   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 288   --enable-libwebp         enable WebP encoding via libwebp [no]
 289   --enable-libx264         enable H.264 encoding via x264 [no]
 290   --enable-libx265         enable HEVC encoding via x265 [no]
 291   --enable-libxavs         enable AVS encoding via xavs [no]
 292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 297   --enable-libxvid         enable Xvid encoding via xvidcore,
 298                            native MPEG-4/Xvid encoder exists [no]
 299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 300                            for dash demuxing support [no]
 301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 302   --enable-libzmq          enable message passing via libzmq [no]
 303   --enable-libzvbi         enable teletext support via libzvbi [no]
 304   --enable-lv2             enable LV2 audio filtering [no]
 305   --disable-lzma           disable lzma [autodetect]
 306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 307   --enable-mbedtls         enable mbedTLS, needed for https support
 308                            if openssl, gnutls or libtls is not used [no]
 309   --enable-mediacodec      enable Android MediaCodec support [no]
 310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 312   --enable-openal          enable OpenAL 1.1 capture support [no]
 313   --enable-opencl          enable OpenCL processing [no]
 314   --enable-opengl          enable OpenGL rendering [no]
 315   --enable-openssl         enable openssl, needed for https support
 316                            if gnutls, libtls or mbedtls is not used [no]
 317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 318   --disable-sndio          disable sndio support [autodetect]
 319   --disable-schannel       disable SChannel SSP, needed for TLS support on
 320                            Windows if openssl and gnutls are not used [autodetect]
 321   --disable-sdl2           disable sdl2 [autodetect]
 322   --disable-securetransport disable Secure Transport, needed for TLS support
 323                            on OSX if openssl and gnutls are not used [autodetect]
 324   --enable-vapoursynth     enable VapourSynth demuxer [no]
 325   --enable-vulkan          enable Vulkan code [no]
 326   --disable-xlib           disable xlib [autodetect]
 327   --disable-zlib           disable zlib [autodetect]
 328
 329   The following libraries provide various hardware acceleration features:
 330   --disable-amf            disable AMF video encoding code [autodetect]
 331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 338   --enable-libdrm          enable DRM code (Linux) [no]
 339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 344   --enable-omx             enable OpenMAX IL code [no]
 345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 351
 352 Toolchain options:
 353   --arch=ARCH              select architecture [$arch]
 354   --cpu=CPU                select the minimum required CPU (affects
 355                            instruction selection, may crash on older CPUs)
 356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 357   --progs-suffix=SUFFIX    program name suffix []
 358   --enable-cross-compile   assume a cross-compiler is used
 359   --sysroot=PATH           root of cross-build tree
 360   --sysinclude=PATH        location of cross-build system headers
 361   --target-os=OS           compiler targets OS [$target_os]
 362   --target-exec=CMD        command to run executables on target
 363   --target-path=DIR        path to view of build directory on target
 364   --target-samples=DIR     path to samples directory on target
 365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 366   --toolchain=NAME         set tool defaults according to NAME
 367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 369                            valgrind-massif, valgrind-memcheck,
 370                            msvc, icl, gcov, llvm-cov, hardened)
 371   --nm=NM                  use nm tool NM [$nm_default]
 372   --ar=AR                  use archive tool AR [$ar_default]
 373   --as=AS                  use assembler AS [$as_default]
 374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 375   --strip=STRIP            use strip tool STRIP [$strip_default]
 376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 378   --cc=CC                  use C compiler CC [$cc_default]
 379   --cxx=CXX                use C compiler CXX [$cxx_default]
 380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 383   --ld=LD                  use linker LD [$ld_default]
 384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 388   --host-cc=HOSTCC         use host C compiler HOSTCC
 389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 391   --host-ld=HOSTLD         use host linker HOSTLD
 392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 394   --host-os=OS             compiler host OS [$target_os]
 395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 402   --extra-version=STRING   version string suffix []
 403   --optflags=OPTFLAGS      override optimization-related compiler flags
 404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 405   --build-suffix=SUFFIX    library name suffix []
 406   --enable-pic             build position-independent code
 407   --enable-thumb           compile for Thumb instruction set
 408   --enable-lto             use link-time optimization
 409   --env="ENV=override"     override the environment variables
 410
 411 Advanced options (experts only):
 412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 413   --custom-allocator=NAME  use a supported custom allocator
 414   --disable-symver         disable symbol versioning
 415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 416   --disable-safe-bitstream-reader
 417                            disable buffer boundary checking in bitreaders
 418                            (faster, but may crash)
 419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 420
 421 Optimization options (experts only):
 422   --disable-asm            disable all assembly optimizations
 423   --disable-altivec        disable AltiVec optimizations
 424   --disable-vsx            disable VSX optimizations
 425   --disable-power8         disable POWER8 optimizations
 426   --disable-amd3dnow       disable 3DNow! optimizations
 427   --disable-amd3dnowext    disable 3DNow! extended optimizations
 428   --disable-mmx            disable MMX optimizations
 429   --disable-mmxext         disable MMXEXT optimizations
 430   --disable-sse            disable SSE optimizations
 431   --disable-sse2           disable SSE2 optimizations
 432   --disable-sse3           disable SSE3 optimizations
 433   --disable-ssse3          disable SSSE3 optimizations
 434   --disable-sse4           disable SSE4 optimizations
 435   --disable-sse42          disable SSE4.2 optimizations
 436   --disable-avx            disable AVX optimizations
 437   --disable-xop            disable XOP optimizations
 438   --disable-fma3           disable FMA3 optimizations
 439   --disable-fma4           disable FMA4 optimizations
 440   --disable-avx2           disable AVX2 optimizations
 441   --disable-avx512         disable AVX-512 optimizations
 442   --disable-aesni          disable AESNI optimizations
 443   --disable-armv5te        disable armv5te optimizations
 444   --disable-armv6          disable armv6 optimizations
 445   --disable-armv6t2        disable armv6t2 optimizations
 446   --disable-vfp            disable VFP optimizations
 447   --disable-neon           disable NEON optimizations
 448   --disable-inline-asm     disable use of inline assembly
 449   --disable-x86asm         disable use of standalone x86 assembly
 450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 452   --disable-msa            disable MSA optimizations
 453   --disable-msa2           disable MSA2 optimizations
 454   --disable-mipsfpu        disable floating point MIPS optimizations
 455   --disable-mmi            disable Loongson SIMD optimizations
 456   --disable-fast-unaligned consider unaligned accesses slow
 457
 458 Developer options (useful when working on FFmpeg itself):
 459   --disable-debug          disable debugging symbols
 460   --enable-debug=LEVEL     set the debug level [$debuglevel]
 461   --disable-optimizations  disable compiler optimizations
 462   --enable-extra-warnings  enable more compiler warnings
 463   --disable-stripping      disable stripping of executables and shared libraries
 464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 465                            2 causes a slowdown at runtime.
 466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 468                            leaks and errors, using the specified valgrind binary.
 469                            Cannot be combined with --target-exec
 470   --enable-ftrapv          Trap arithmetic overflows
 471   --samples=PATH           location of test samples for FATE, if not set use
 472                            \$FATE_SAMPLES at make invocation time.
 473   --enable-neon-clobber-test check NEON registers for clobbering (should be
 474                            used only for debugging purposes)
 475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 476                            should be used only for debugging purposes)
 477   --enable-random          randomly enable/disable components
 478   --disable-random
 479   --enable-random=LIST     randomly enable/disable specific components or
 480   --disable-random=LIST    component groups. LIST is a comma-separated list
 481                            of NAME[:PROB] entries where NAME is a component
 482                            (group) and PROB the probability associated with
 483                            NAME (default 0.5).
 484   --random-seed=VALUE      seed value for --enable/disable-random
 485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 486                            (only applies to --disable-optimizations builds)
 487   --enable-ossfuzz         Enable building fuzzer tool
 488   --libfuzzer=PATH         path to libfuzzer
 489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 490                            in the name) of tests whose result is ignored
 491   --enable-linux-perf      enable Linux Performance Monitor API
 492   --disable-large-tests    disable tests that use a large amount of memory
 493
 494 NOTE: Object files are built at the place where configure is launched.
 495 EOF
 496   exit 0
 497 }
 498
 499 if test -t 1 && which tput >/dev/null 2>&1; then
 500     ncolors=$(tput colors)
 501     if test -n "$ncolors" && test $ncolors -ge 8; then
 502         bold_color=$(tput bold)
 503         warn_color=$(tput setaf 3)
 504         error_color=$(tput setaf 1)
 505         reset_color=$(tput sgr0)
 506     fi
 507     # 72 used instead of 80 since that's the default of pr
 508     ncols=$(tput cols)
 509 fi
 510 : ${ncols:=72}
 511
 512 log(){
 513     echo "$@" >> $logfile
 514 }
 515
 516 log_file(){
 517     log BEGIN "$1"
 518     log_file_i=1
 519     while IFS= read -r log_file_line; do
 520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 521         log_file_i=$(($log_file_i+1))
 522     done < "$1" >> "$logfile"
 523     log END "$1"
 524 }
 525
 526 warn(){
 527     log "WARNING: $*"
 528     WARNINGS="${WARNINGS}WARNING: $*\n"
 529 }
 530
 531 die(){
 532     log "$@"
 533     echo "$error_color$bold_color$@$reset_color"
 534     cat <<EOF
 535
 536 If you think configure made a mistake, make sure you are using the latest
 537 version from Git.  If the latest version fails, report the problem to the
 538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 539 EOF
 540     if disabled logging; then
 541         cat <<EOF
 542 Rerun configure with logging enabled (do not use --disable-logging), and
 543 include the log this produces with your report.
 544 EOF
 545     else
 546         cat <<EOF
 547 Include the log file "$logfile" produced by configure as this will help
 548 solve the problem.
 549 EOF
 550     fi
 551     exit 1
 552 }
 553
 554 # Avoid locale weirdness, besides we really just want to translate ASCII.
 555 toupper(){
 556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 557 }
 558
 559 tolower(){
 560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 561 }
 562
 563 c_escape(){
 564     echo "$*" | sed 's/["\\]/\\\0/g'
 565 }
 566
 567 sh_quote(){
 568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 570     echo "$v"
 571 }
 572
 573 cleanws(){
 574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 575 }
 576
 577 filter(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 filter_out(){
 586     pat=$1
 587     shift
 588     for v; do
 589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 590     done
 591 }
 592
 593 map(){
 594     m=$1
 595     shift
 596     for v; do eval $m; done
 597 }
 598
 599 add_suffix(){
 600     suffix=$1
 601     shift
 602     for v; do echo ${v}${suffix}; done
 603 }
 604
 605 remove_suffix(){
 606     suffix=$1
 607     shift
 608     for v; do echo ${v%$suffix}; done
 609 }
 610
 611 set_all(){
 612     value=$1
 613     shift
 614     for var in $*; do
 615         eval $var=$value
 616     done
 617 }
 618
 619 set_weak(){
 620     value=$1
 621     shift
 622     for var; do
 623         eval : \${$var:=$value}
 624     done
 625 }
 626
 627 sanitize_var_name(){
 628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 629 }
 630
 631 set_sanitized(){
 632     var=$1
 633     shift
 634     eval $(sanitize_var_name "$var")='$*'
 635 }
 636
 637 get_sanitized(){
 638     eval echo \$$(sanitize_var_name "$1")
 639 }
 640
 641 pushvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:=0}
 644         eval ${pvar}_${level}="\$$pvar"
 645         eval ${pvar}_level=$(($level+1))
 646     done
 647 }
 648
 649 popvar(){
 650     for pvar in $*; do
 651         eval level=\${${pvar}_level:-0}
 652         test $level = 0 && continue
 653         eval level=$(($level-1))
 654         eval $pvar="\${${pvar}_${level}}"
 655         eval ${pvar}_level=$level
 656         eval unset ${pvar}_${level}
 657     done
 658 }
 659
 660 request(){
 661     for var in $*; do
 662         eval ${var}_requested=yes
 663         eval $var=
 664     done
 665 }
 666
 667 warn_if_gets_disabled(){
 668     for var in $*; do
 669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 670     done
 671 }
 672
 673 enable(){
 674     set_all yes $*
 675 }
 676
 677 disable(){
 678     set_all no $*
 679 }
 680
 681 disable_with_reason(){
 682     disable $1
 683     eval "${1}_disable_reason=\"$2\""
 684     if requested $1; then
 685         die "ERROR: $1 requested, but $2"
 686     fi
 687 }
 688
 689 enable_weak(){
 690     set_weak yes $*
 691 }
 692
 693 disable_weak(){
 694     set_weak no $*
 695 }
 696
 697 enable_sanitized(){
 698     for var; do
 699         enable $(sanitize_var_name $var)
 700     done
 701 }
 702
 703 disable_sanitized(){
 704     for var; do
 705         disable $(sanitize_var_name $var)
 706     done
 707 }
 708
 709 do_enable_deep(){
 710     for var; do
 711         enabled $var && continue
 712         set -- $var
 713         eval enable_deep \$${var}_select
 714         var=$1
 715         eval enable_deep_weak \$${var}_suggest
 716     done
 717 }
 718
 719 enable_deep(){
 720     do_enable_deep $*
 721     enable $*
 722 }
 723
 724 enable_deep_weak(){
 725     for var; do
 726         disabled $var && continue
 727         set -- $var
 728         do_enable_deep $var
 729         var=$1
 730         enable_weak $var
 731     done
 732 }
 733
 734 requested(){
 735     test "${1#!}" = "$1" && op="=" || op="!="
 736     eval test "x\$${1#!}_requested" $op "xyes"
 737 }
 738
 739 enabled(){
 740     test "${1#!}" = "$1" && op="=" || op="!="
 741     eval test "x\$${1#!}" $op "xyes"
 742 }
 743
 744 disabled(){
 745     test "${1#!}" = "$1" && op="=" || op="!="
 746     eval test "x\$${1#!}" $op "xno"
 747 }
 748
 749 enabled_all(){
 750     for opt; do
 751         enabled $opt || return 1
 752     done
 753 }
 754
 755 disabled_all(){
 756     for opt; do
 757         disabled $opt || return 1
 758     done
 759 }
 760
 761 enabled_any(){
 762     for opt; do
 763         enabled $opt && return 0
 764     done
 765 }
 766
 767 disabled_any(){
 768     for opt; do
 769         disabled $opt && return 0
 770     done
 771     return 1
 772 }
 773
 774 set_default(){
 775     for opt; do
 776         eval : \${$opt:=\$${opt}_default}
 777     done
 778 }
 779
 780 is_in(){
 781     value=$1
 782     shift
 783     for var in $*; do
 784         [ $var = $value ] && return 0
 785     done
 786     return 1
 787 }
 788
 789 # The cfg loop is very hot (several thousands iterations), and in bash also
 790 # potentialy quite slow. Try to abort the iterations early, preferably without
 791 # calling functions. 70%+ of the time cfg is already done or without deps.
 792 check_deps(){
 793     for cfg; do
 794         eval [ x\$${cfg}_checking = xdone ] && continue
 795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 796
 797         eval "
 798         dep_all=\$${cfg}_deps
 799         dep_any=\$${cfg}_deps_any
 800         dep_con=\$${cfg}_conflict
 801         dep_sel=\$${cfg}_select
 802         dep_sgs=\$${cfg}_suggest
 803         dep_ifa=\$${cfg}_if
 804         dep_ifn=\$${cfg}_if_any
 805         "
 806
 807         # most of the time here $cfg has no deps - avoid costly no-op work
 808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 809             eval ${cfg}_checking=inprogress
 810
 811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 814
 815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 821
 822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 823
 824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 825                 # filter out library deps, these do not belong in extralibs
 826                 is_in $dep $LIBRARY_LIST && continue
 827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 828             done
 829         fi
 830
 831         eval ${cfg}_checking=done
 832     done
 833 }
 834
 835 print_config(){
 836     pfx=$1
 837     files=$2
 838     shift 2
 839     map 'eval echo "$v \${$v:-no}"' "$@" |
 840     awk "BEGIN { split(\"$files\", files) }
 841         {
 842             c = \"$pfx\" toupper(\$1);
 843             v = \$2;
 844             sub(/yes/, 1, v);
 845             sub(/no/,  0, v);
 846             for (f in files) {
 847                 file = files[f];
 848                 if (file ~ /\\.h\$/) {
 849                     printf(\"#define %s %d\\n\", c, v) >>file;
 850                 } else if (file ~ /\\.asm\$/) {
 851                     printf(\"%%define %s %d\\n\", c, v) >>file;
 852                 } else if (file ~ /\\.mak\$/) {
 853                     n = -v ? \"\" : \"!\";
 854                     printf(\"%s%s=yes\\n\", n, c) >>file;
 855                 } else if (file ~ /\\.texi\$/) {
 856                     pre = -v ? \"\" : \"@c \";
 857                     yesno = \$2;
 858                     c2 = tolower(c);
 859                     gsub(/_/, \"-\", c2);
 860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 861                 }
 862             }
 863         }"
 864 }
 865
 866 print_enabled(){
 867     suf=$1
 868     shift
 869     for v; do
 870         enabled $v && printf "%s\n" ${v%$suf}
 871     done
 872 }
 873
 874 append(){
 875     var=$1
 876     shift
 877     eval "$var=\"\$$var $*\""
 878 }
 879
 880 prepend(){
 881     var=$1
 882     shift
 883     eval "$var=\"$* \$$var\""
 884 }
 885
 886 reverse () {
 887     eval '
 888         reverse_out=
 889         for v in $'$1'; do
 890             reverse_out="$v $reverse_out"
 891         done
 892         '$1'=$reverse_out
 893     '
 894 }
 895
 896 # keeps the last occurence of each non-unique item
 897 unique(){
 898     unique_out=
 899     eval unique_in=\$$1
 900     reverse unique_in
 901     for v in $unique_in; do
 902         # " $unique_out" +space such that every item is surrounded with spaces
 903         case " $unique_out" in *" $v "*) continue; esac  # already in list
 904         unique_out="$unique_out$v "
 905     done
 906     reverse unique_out
 907     eval $1=\$unique_out
 908 }
 909
 910 resolve(){
 911     resolve_out=
 912     eval resolve_in=\$$1
 913     for v in $resolve_in; do
 914         eval 'resolve_out="$resolve_out$'$v' "'
 915     done
 916     eval $1=\$resolve_out
 917 }
 918
 919 add_cppflags(){
 920     append CPPFLAGS "$@"
 921 }
 922
 923 add_cflags(){
 924     append CFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_cflags_headers(){
 928     append CFLAGS_HEADERS $($cflags_filter "$@")
 929 }
 930
 931 add_cxxflags(){
 932     append CXXFLAGS $($cflags_filter "$@")
 933 }
 934
 935 add_objcflags(){
 936     append OBJCFLAGS $($objcflags_filter "$@")
 937 }
 938
 939 add_asflags(){
 940     append ASFLAGS $($asflags_filter "$@")
 941 }
 942
 943 add_ldflags(){
 944     append LDFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldexeflags(){
 948     append LDEXEFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_ldsoflags(){
 952     append LDSOFLAGS $($ldflags_filter "$@")
 953 }
 954
 955 add_extralibs(){
 956     prepend extralibs $($ldflags_filter "$@")
 957 }
 958
 959 add_stripflags(){
 960     append ASMSTRIPFLAGS "$@"
 961 }
 962
 963 add_host_cppflags(){
 964     append host_cppflags "$@"
 965 }
 966
 967 add_host_cflags(){
 968     append host_cflags $($host_cflags_filter "$@")
 969 }
 970
 971 add_host_ldflags(){
 972     append host_ldflags $($host_ldflags_filter "$@")
 973 }
 974
 975 add_compat(){
 976     append compat_objs $1
 977     shift
 978     map 'add_cppflags -D$v' "$@"
 979 }
 980
 981 test_cmd(){
 982     log "$@"
 983     "$@" >> $logfile 2>&1
 984 }
 985
 986 test_stat(){
 987     log test_stat "$@"
 988     stat "$1" >> $logfile 2>&1
 989 }
 990
 991 cc_e(){
 992     eval printf '%s\\n' $CC_E
 993 }
 994
 995 cc_o(){
 996     eval printf '%s\\n' $CC_O
 997 }
 998
 999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libuavs3d
1815     libv4l2
1816     libvmaf
1817     libvorbis
1818     libvpx
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_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     libdrm_getfb2
2329     makeinfo
2330     makeinfo_html
2331     opencl_d3d11
2332     opencl_drm_arm
2333     opencl_drm_beignet
2334     opencl_dxva2
2335     opencl_vaapi_beignet
2336     opencl_vaapi_intel_media
2337     perl
2338     pod2man
2339     texi2html
2340 "
2341
2342 # options emitted with CONFIG_ prefix but not available on the command line
2343 CONFIG_EXTRA="
2344     aandcttables
2345     ac3dsp
2346     adts_header
2347     atsc_a53
2348     audio_frame_queue
2349     audiodsp
2350     blockdsp
2351     bswapdsp
2352     cabac
2353     cbs
2354     cbs_av1
2355     cbs_h264
2356     cbs_h265
2357     cbs_jpeg
2358     cbs_mpeg2
2359     cbs_vp9
2360     dirac_parse
2361     dnn
2362     dvprofile
2363     exif
2364     faandct
2365     faanidct
2366     fdctdsp
2367     flacdsp
2368     fmtconvert
2369     frame_thread_encoder
2370     g722dsp
2371     golomb
2372     gplv3
2373     h263dsp
2374     h264chroma
2375     h264dsp
2376     h264parse
2377     h264pred
2378     h264qpel
2379     hevcparse
2380     hpeldsp
2381     huffman
2382     huffyuvdsp
2383     huffyuvencdsp
2384     idctdsp
2385     iirfilter
2386     mdct15
2387     intrax8
2388     iso_media
2389     ividsp
2390     jpegtables
2391     lgplv3
2392     libx262
2393     llauddsp
2394     llviddsp
2395     llvidencdsp
2396     lpc
2397     lzf
2398     me_cmp
2399     mpeg_er
2400     mpegaudio
2401     mpegaudiodsp
2402     mpegaudioheader
2403     mpegvideo
2404     mpegvideoenc
2405     mss34dsp
2406     pixblockdsp
2407     qpeldsp
2408     qsv
2409     qsvdec
2410     qsvenc
2411     qsvvpp
2412     rangecoder
2413     riffdec
2414     riffenc
2415     rtpdec
2416     rtpenc_chain
2417     rv34dsp
2418     scene_sad
2419     sinewin
2420     snappy
2421     srtp
2422     startcode
2423     texturedsp
2424     texturedspenc
2425     tpeldsp
2426     vaapi_1
2427     vaapi_encode
2428     vc1dsp
2429     videodsp
2430     vp3dsp
2431     vp56dsp
2432     vp8dsp
2433     wma_freqs
2434     wmv2dsp
2435 "
2436
2437 CMDLINE_SELECT="
2438     $ARCH_EXT_LIST
2439     $CONFIG_LIST
2440     $HAVE_LIST_CMDLINE
2441     $THREADS_LIST
2442     asm
2443     cross_compile
2444     debug
2445     extra_warnings
2446     logging
2447     lto
2448     optimizations
2449     rpath
2450     stripping
2451 "
2452
2453 PATHS_LIST="
2454     bindir
2455     datadir
2456     docdir
2457     incdir
2458     libdir
2459     mandir
2460     pkgconfigdir
2461     prefix
2462     shlibdir
2463     install_name_dir
2464 "
2465
2466 CMDLINE_SET="
2467     $PATHS_LIST
2468     ar
2469     arch
2470     as
2471     assert_level
2472     build_suffix
2473     cc
2474     objcc
2475     cpu
2476     cross_prefix
2477     custom_allocator
2478     cxx
2479     dep_cc
2480     doxygen
2481     env
2482     extra_version
2483     gas
2484     host_cc
2485     host_cflags
2486     host_extralibs
2487     host_ld
2488     host_ldflags
2489     host_os
2490     ignore_tests
2491     install
2492     ld
2493     ln_s
2494     logfile
2495     malloc_prefix
2496     nm
2497     optflags
2498     nvcc
2499     nvccflags
2500     pkg_config
2501     pkg_config_flags
2502     progs_suffix
2503     random_seed
2504     ranlib
2505     samples
2506     strip
2507     sws_max_filter_size
2508     sysinclude
2509     sysroot
2510     target_exec
2511     target_os
2512     target_path
2513     target_samples
2514     tempprefix
2515     toolchain
2516     valgrind
2517     windres
2518     x86asmexe
2519 "
2520
2521 CMDLINE_APPEND="
2522     extra_cflags
2523     extra_cxxflags
2524     extra_objcflags
2525     host_cppflags
2526 "
2527
2528 # code dependency declarations
2529
2530 # architecture extensions
2531
2532 armv5te_deps="arm"
2533 armv6_deps="arm"
2534 armv6t2_deps="arm"
2535 armv8_deps="aarch64"
2536 neon_deps_any="aarch64 arm"
2537 intrinsics_neon_deps="neon"
2538 vfp_deps_any="aarch64 arm"
2539 vfpv3_deps="vfp"
2540 setend_deps="arm"
2541
2542 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2543
2544 altivec_deps="ppc"
2545 dcbzl_deps="ppc"
2546 ldbrx_deps="ppc"
2547 ppc4xx_deps="ppc"
2548 vsx_deps="altivec"
2549 power8_deps="vsx"
2550
2551 loongson2_deps="mips"
2552 loongson3_deps="mips"
2553 mips32r2_deps="mips"
2554 mips32r5_deps="mips"
2555 mips32r6_deps="mips"
2556 mips64r2_deps="mips"
2557 mips64r6_deps="mips"
2558 mipsfpu_deps="mips"
2559 mipsdsp_deps="mips"
2560 mipsdspr2_deps="mips"
2561 mmi_deps_any="loongson2 loongson3"
2562 msa_deps="mipsfpu"
2563 msa2_deps="msa"
2564
2565 cpunop_deps="i686"
2566 x86_64_select="i686"
2567 x86_64_suggest="fast_cmov"
2568
2569 amd3dnow_deps="mmx"
2570 amd3dnowext_deps="amd3dnow"
2571 i686_deps="x86"
2572 mmx_deps="x86"
2573 mmxext_deps="mmx"
2574 sse_deps="mmxext"
2575 sse2_deps="sse"
2576 sse3_deps="sse2"
2577 ssse3_deps="sse3"
2578 sse4_deps="ssse3"
2579 sse42_deps="sse4"
2580 aesni_deps="sse42"
2581 avx_deps="sse42"
2582 xop_deps="avx"
2583 fma3_deps="avx"
2584 fma4_deps="avx"
2585 avx2_deps="avx"
2586 avx512_deps="avx2"
2587
2588 mmx_external_deps="x86asm"
2589 mmx_inline_deps="inline_asm x86"
2590 mmx_suggest="mmx_external mmx_inline"
2591
2592 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2593     eval dep=\$${ext}_deps
2594     eval ${ext}_external_deps='"${dep}_external"'
2595     eval ${ext}_inline_deps='"${dep}_inline"'
2596     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2597 done
2598
2599 aligned_stack_if_any="aarch64 ppc x86"
2600 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2601 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2602 fast_unaligned_if_any="aarch64 ppc x86"
2603 simd_align_16_if_any="altivec neon sse"
2604 simd_align_32_if_any="avx"
2605 simd_align_64_if_any="avx512"
2606
2607 # system capabilities
2608 linux_perf_deps="linux_perf_event_h"
2609 symver_if_any="symver_asm_label symver_gnu_asm"
2610 valgrind_backtrace_conflict="optimizations"
2611 valgrind_backtrace_deps="valgrind_valgrind_h"
2612
2613 # threading support
2614 atomics_gcc_if="sync_val_compare_and_swap"
2615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2616 atomics_win32_if="MemoryBarrier"
2617 atomics_native_if_any="$ATOMICS_LIST"
2618 w32threads_deps="atomics_native"
2619 threads_if_any="$THREADS_LIST"
2620
2621 # subsystems
2622 cbs_av1_select="cbs"
2623 cbs_h264_select="cbs"
2624 cbs_h265_select="cbs"
2625 cbs_jpeg_select="cbs"
2626 cbs_mpeg2_select="cbs"
2627 cbs_vp9_select="cbs"
2628 dct_select="rdft"
2629 dirac_parse_select="golomb"
2630 dnn_suggest="libtensorflow libopenvino"
2631 dnn_deps="swscale"
2632 error_resilience_select="me_cmp"
2633 faandct_deps="faan"
2634 faandct_select="fdctdsp"
2635 faanidct_deps="faan"
2636 faanidct_select="idctdsp"
2637 h264dsp_select="startcode"
2638 hevcparse_select="atsc_a53 golomb"
2639 frame_thread_encoder_deps="encoders threads"
2640 intrax8_select="blockdsp idctdsp"
2641 mdct_select="fft"
2642 mdct15_select="fft"
2643 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2644 mpeg_er_select="error_resilience"
2645 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2646 mpegaudiodsp_select="dct"
2647 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2648 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2649 vc1dsp_select="h264chroma qpeldsp startcode"
2650 rdft_select="fft"
2651
2652 # decoders / encoders
2653 aac_decoder_select="adts_header mdct15 mdct sinewin"
2654 aac_fixed_decoder_select="adts_header mdct sinewin"
2655 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2656 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2657 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2658 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2659 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2661 acelp_kelvin_decoder_select="audiodsp"
2662 adpcm_g722_decoder_select="g722dsp"
2663 adpcm_g722_encoder_select="g722dsp"
2664 aic_decoder_select="golomb idctdsp"
2665 alac_encoder_select="lpc"
2666 als_decoder_select="bswapdsp"
2667 amrnb_decoder_select="lsp"
2668 amrwb_decoder_select="lsp"
2669 amv_decoder_select="sp5x_decoder exif"
2670 amv_encoder_select="jpegtables mpegvideoenc"
2671 ape_decoder_select="bswapdsp llauddsp"
2672 apng_decoder_deps="zlib"
2673 apng_encoder_deps="zlib"
2674 apng_encoder_select="llvidencdsp"
2675 aptx_decoder_select="audio_frame_queue"
2676 aptx_encoder_select="audio_frame_queue"
2677 aptx_hd_decoder_select="audio_frame_queue"
2678 aptx_hd_encoder_select="audio_frame_queue"
2679 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2682 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2683 atrac1_decoder_select="mdct sinewin"
2684 atrac3_decoder_select="mdct"
2685 atrac3al_decoder_select="mdct"
2686 atrac3p_decoder_select="mdct sinewin"
2687 atrac3pal_decoder_select="mdct sinewin"
2688 atrac9_decoder_select="mdct"
2689 av1_decoder_select="cbs_av1"
2690 avrn_decoder_select="exif jpegtables"
2691 bink_decoder_select="blockdsp hpeldsp"
2692 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2693 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2694 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2695 clearvideo_decoder_select="idctdsp"
2696 cllc_decoder_select="bswapdsp"
2697 comfortnoise_encoder_select="lpc"
2698 cook_decoder_select="audiodsp mdct sinewin"
2699 cscd_decoder_select="lzo"
2700 cscd_decoder_suggest="zlib"
2701 dca_decoder_select="mdct"
2702 dca_encoder_select="mdct"
2703 dds_decoder_select="texturedsp"
2704 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2705 dnxhd_decoder_select="blockdsp idctdsp"
2706 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2707 dolby_e_decoder_select="mdct"
2708 dvvideo_decoder_select="dvprofile idctdsp"
2709 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2710 dxa_decoder_deps="zlib"
2711 dxv_decoder_select="lzf texturedsp"
2712 eac3_decoder_select="ac3_decoder"
2713 eac3_encoder_select="ac3_encoder"
2714 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2715 eatgq_decoder_select="aandcttables"
2716 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2717 exr_decoder_deps="zlib"
2718 ffv1_decoder_select="rangecoder"
2719 ffv1_encoder_select="rangecoder"
2720 ffvhuff_decoder_select="huffyuv_decoder"
2721 ffvhuff_encoder_select="huffyuv_encoder"
2722 fic_decoder_select="golomb"
2723 flac_decoder_select="flacdsp"
2724 flac_encoder_select="bswapdsp flacdsp lpc"
2725 flashsv2_decoder_deps="zlib"
2726 flashsv2_encoder_deps="zlib"
2727 flashsv_decoder_deps="zlib"
2728 flashsv_encoder_deps="zlib"
2729 flv_decoder_select="h263_decoder"
2730 flv_encoder_select="h263_encoder"
2731 fourxm_decoder_select="blockdsp bswapdsp"
2732 fraps_decoder_select="bswapdsp huffman"
2733 g2m_decoder_deps="zlib"
2734 g2m_decoder_select="blockdsp idctdsp jpegtables"
2735 g729_decoder_select="audiodsp"
2736 h261_decoder_select="mpegvideo"
2737 h261_encoder_select="mpegvideoenc"
2738 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2739 h263_encoder_select="h263dsp mpegvideoenc"
2740 h263i_decoder_select="h263_decoder"
2741 h263p_decoder_select="h263_decoder"
2742 h263p_encoder_select="h263_encoder"
2743 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2744 h264_decoder_suggest="error_resilience"
2745 hap_decoder_select="snappy texturedsp"
2746 hap_encoder_deps="libsnappy"
2747 hap_encoder_select="texturedspenc"
2748 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2749 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2750 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2751 hymt_decoder_select="huffyuv_decoder"
2752 iac_decoder_select="imc_decoder"
2753 imc_decoder_select="bswapdsp fft mdct sinewin"
2754 imm4_decoder_select="bswapdsp"
2755 imm5_decoder_select="h264_decoder hevc_decoder"
2756 indeo3_decoder_select="hpeldsp"
2757 indeo4_decoder_select="ividsp"
2758 indeo5_decoder_select="ividsp"
2759 interplay_video_decoder_select="hpeldsp"
2760 jpegls_decoder_select="mjpeg_decoder"
2761 jv_decoder_select="blockdsp"
2762 lagarith_decoder_select="llviddsp"
2763 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2764 lscr_decoder_deps="zlib"
2765 magicyuv_decoder_select="llviddsp"
2766 magicyuv_encoder_select="llvidencdsp"
2767 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2768 metasound_decoder_select="lsp mdct sinewin"
2769 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2770 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2771 mjpeg_encoder_select="jpegtables mpegvideoenc"
2772 mjpegb_decoder_select="mjpeg_decoder"
2773 mlp_decoder_select="mlp_parser"
2774 mlp_encoder_select="lpc audio_frame_queue"
2775 mobiclip_decoder_select="bswapdsp golomb"
2776 motionpixels_decoder_select="bswapdsp"
2777 mp1_decoder_select="mpegaudio"
2778 mp1float_decoder_select="mpegaudio"
2779 mp2_decoder_select="mpegaudio"
2780 mp2float_decoder_select="mpegaudio"
2781 mp3_decoder_select="mpegaudio"
2782 mp3adu_decoder_select="mpegaudio"
2783 mp3adufloat_decoder_select="mpegaudio"
2784 mp3float_decoder_select="mpegaudio"
2785 mp3on4_decoder_select="mpegaudio"
2786 mp3on4float_decoder_select="mpegaudio"
2787 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2788 mpc8_decoder_select="mpegaudiodsp"
2789 mpegvideo_decoder_select="mpegvideo"
2790 mpeg1video_decoder_select="mpegvideo"
2791 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2792 mpeg2video_decoder_select="mpegvideo"
2793 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2794 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2795 mpeg4_encoder_select="h263_encoder"
2796 msa1_decoder_select="mss34dsp"
2797 mscc_decoder_deps="zlib"
2798 msmpeg4v1_decoder_select="h263_decoder"
2799 msmpeg4v2_decoder_select="h263_decoder"
2800 msmpeg4v2_encoder_select="h263_encoder"
2801 msmpeg4v3_decoder_select="h263_decoder"
2802 msmpeg4v3_encoder_select="h263_encoder"
2803 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2804 mts2_decoder_select="mss34dsp"
2805 mv30_decoder_select="aandcttables blockdsp"
2806 mvha_decoder_deps="zlib"
2807 mvha_decoder_select="llviddsp"
2808 mwsc_decoder_deps="zlib"
2809 mxpeg_decoder_select="mjpeg_decoder"
2810 nellymoser_decoder_select="mdct sinewin"
2811 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2812 notchlc_decoder_select="lzf"
2813 nuv_decoder_select="idctdsp lzo"
2814 on2avc_decoder_select="mdct"
2815 opus_decoder_deps="swresample"
2816 opus_decoder_select="mdct15"
2817 opus_encoder_select="audio_frame_queue mdct15"
2818 png_decoder_deps="zlib"
2819 png_encoder_deps="zlib"
2820 png_encoder_select="llvidencdsp"
2821 prores_decoder_select="blockdsp idctdsp"
2822 prores_encoder_select="fdctdsp"
2823 qcelp_decoder_select="lsp"
2824 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2825 ra_144_decoder_select="audiodsp"
2826 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2827 ralf_decoder_select="golomb"
2828 rasc_decoder_deps="zlib"
2829 rawvideo_decoder_select="bswapdsp"
2830 rscc_decoder_deps="zlib"
2831 rtjpeg_decoder_select="me_cmp"
2832 rv10_decoder_select="h263_decoder"
2833 rv10_encoder_select="h263_encoder"
2834 rv20_decoder_select="h263_decoder"
2835 rv20_encoder_select="h263_encoder"
2836 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2837 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2838 screenpresso_decoder_deps="zlib"
2839 shorten_decoder_select="bswapdsp"
2840 sipr_decoder_select="lsp"
2841 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2842 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2843 sonic_decoder_select="golomb rangecoder"
2844 sonic_encoder_select="golomb rangecoder"
2845 sonic_ls_encoder_select="golomb rangecoder"
2846 sp5x_decoder_select="mjpeg_decoder"
2847 speedhq_decoder_select="mpegvideo"
2848 srgc_decoder_deps="zlib"
2849 svq1_decoder_select="hpeldsp"
2850 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2851 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2852 svq3_decoder_suggest="zlib"
2853 tak_decoder_select="audiodsp"
2854 tdsc_decoder_deps="zlib"
2855 tdsc_decoder_select="mjpeg_decoder"
2856 theora_decoder_select="vp3_decoder"
2857 thp_decoder_select="mjpeg_decoder"
2858 tiff_decoder_select="mjpeg_decoder"
2859 tiff_decoder_suggest="zlib lzma"
2860 tiff_encoder_suggest="zlib"
2861 truehd_decoder_select="mlp_parser"
2862 truehd_encoder_select="lpc audio_frame_queue"
2863 truemotion2_decoder_select="bswapdsp"
2864 truespeech_decoder_select="bswapdsp"
2865 tscc_decoder_deps="zlib"
2866 twinvq_decoder_select="mdct lsp sinewin"
2867 txd_decoder_select="texturedsp"
2868 utvideo_decoder_select="bswapdsp llviddsp"
2869 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2870 vble_decoder_select="llviddsp"
2871 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2872 vc1image_decoder_select="vc1_decoder"
2873 vorbis_decoder_select="mdct"
2874 vorbis_encoder_select="audio_frame_queue mdct"
2875 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2876 vp4_decoder_select="vp3_decoder"
2877 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2878 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2879 vp6a_decoder_select="vp6_decoder"
2880 vp6f_decoder_select="vp6_decoder"
2881 vp7_decoder_select="h264pred videodsp vp8dsp"
2882 vp8_decoder_select="h264pred videodsp vp8dsp"
2883 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2884 wcmv_decoder_deps="zlib"
2885 webp_decoder_select="vp8_decoder exif"
2886 wmalossless_decoder_select="llauddsp"
2887 wmapro_decoder_select="mdct sinewin wma_freqs"
2888 wmav1_decoder_select="mdct sinewin wma_freqs"
2889 wmav1_encoder_select="mdct sinewin wma_freqs"
2890 wmav2_decoder_select="mdct sinewin wma_freqs"
2891 wmav2_encoder_select="mdct sinewin wma_freqs"
2892 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2893 wmv1_decoder_select="h263_decoder"
2894 wmv1_encoder_select="h263_encoder"
2895 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2896 wmv2_encoder_select="h263_encoder wmv2dsp"
2897 wmv3_decoder_select="vc1_decoder"
2898 wmv3image_decoder_select="wmv3_decoder"
2899 xma1_decoder_select="wmapro_decoder"
2900 xma2_decoder_select="wmapro_decoder"
2901 ylc_decoder_select="bswapdsp"
2902 zerocodec_decoder_deps="zlib"
2903 zlib_decoder_deps="zlib"
2904 zlib_encoder_deps="zlib"
2905 zmbv_decoder_deps="zlib"
2906 zmbv_encoder_deps="zlib"
2907
2908 # hardware accelerators
2909 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2910 cuda_deps="ffnvcodec"
2911 cuvid_deps="ffnvcodec"
2912 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2913 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2914 ffnvcodec_deps_any="libdl LoadLibrary"
2915 nvdec_deps="ffnvcodec"
2916 vaapi_x11_deps="xlib"
2917 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2918 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2919 xvmc_deps="X11_extensions_XvMClib_h"
2920
2921 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2922 av1_vaapi_hwaccel_select="av1_decoder"
2923 h263_vaapi_hwaccel_deps="vaapi"
2924 h263_vaapi_hwaccel_select="h263_decoder"
2925 h263_videotoolbox_hwaccel_deps="videotoolbox"
2926 h263_videotoolbox_hwaccel_select="h263_decoder"
2927 h264_d3d11va_hwaccel_deps="d3d11va"
2928 h264_d3d11va_hwaccel_select="h264_decoder"
2929 h264_d3d11va2_hwaccel_deps="d3d11va"
2930 h264_d3d11va2_hwaccel_select="h264_decoder"
2931 h264_dxva2_hwaccel_deps="dxva2"
2932 h264_dxva2_hwaccel_select="h264_decoder"
2933 h264_nvdec_hwaccel_deps="nvdec"
2934 h264_nvdec_hwaccel_select="h264_decoder"
2935 h264_vaapi_hwaccel_deps="vaapi"
2936 h264_vaapi_hwaccel_select="h264_decoder"
2937 h264_vdpau_hwaccel_deps="vdpau"
2938 h264_vdpau_hwaccel_select="h264_decoder"
2939 h264_videotoolbox_hwaccel_deps="videotoolbox"
2940 h264_videotoolbox_hwaccel_select="h264_decoder"
2941 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2942 hevc_d3d11va_hwaccel_select="hevc_decoder"
2943 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2944 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2945 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2946 hevc_dxva2_hwaccel_select="hevc_decoder"
2947 hevc_nvdec_hwaccel_deps="nvdec"
2948 hevc_nvdec_hwaccel_select="hevc_decoder"
2949 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2950 hevc_vaapi_hwaccel_select="hevc_decoder"
2951 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2952 hevc_vdpau_hwaccel_select="hevc_decoder"
2953 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2954 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2955 mjpeg_nvdec_hwaccel_deps="nvdec"
2956 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2957 mjpeg_vaapi_hwaccel_deps="vaapi"
2958 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2959 mpeg_xvmc_hwaccel_deps="xvmc"
2960 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2961 mpeg1_nvdec_hwaccel_deps="nvdec"
2962 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2963 mpeg1_vdpau_hwaccel_deps="vdpau"
2964 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2965 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2966 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2967 mpeg1_xvmc_hwaccel_deps="xvmc"
2968 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2969 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2970 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2971 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2972 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2973 mpeg2_dxva2_hwaccel_deps="dxva2"
2974 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2975 mpeg2_nvdec_hwaccel_deps="nvdec"
2976 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2977 mpeg2_vaapi_hwaccel_deps="vaapi"
2978 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2979 mpeg2_vdpau_hwaccel_deps="vdpau"
2980 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2981 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2982 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2983 mpeg2_xvmc_hwaccel_deps="xvmc"
2984 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2985 mpeg4_nvdec_hwaccel_deps="nvdec"
2986 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2987 mpeg4_vaapi_hwaccel_deps="vaapi"
2988 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2989 mpeg4_vdpau_hwaccel_deps="vdpau"
2990 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2991 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2992 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2993 vc1_d3d11va_hwaccel_deps="d3d11va"
2994 vc1_d3d11va_hwaccel_select="vc1_decoder"
2995 vc1_d3d11va2_hwaccel_deps="d3d11va"
2996 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2997 vc1_dxva2_hwaccel_deps="dxva2"
2998 vc1_dxva2_hwaccel_select="vc1_decoder"
2999 vc1_nvdec_hwaccel_deps="nvdec"
3000 vc1_nvdec_hwaccel_select="vc1_decoder"
3001 vc1_vaapi_hwaccel_deps="vaapi"
3002 vc1_vaapi_hwaccel_select="vc1_decoder"
3003 vc1_vdpau_hwaccel_deps="vdpau"
3004 vc1_vdpau_hwaccel_select="vc1_decoder"
3005 vp8_nvdec_hwaccel_deps="nvdec"
3006 vp8_nvdec_hwaccel_select="vp8_decoder"
3007 vp8_vaapi_hwaccel_deps="vaapi"
3008 vp8_vaapi_hwaccel_select="vp8_decoder"
3009 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3010 vp9_d3d11va_hwaccel_select="vp9_decoder"
3011 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3012 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3013 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3014 vp9_dxva2_hwaccel_select="vp9_decoder"
3015 vp9_nvdec_hwaccel_deps="nvdec"
3016 vp9_nvdec_hwaccel_select="vp9_decoder"
3017 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3018 vp9_vaapi_hwaccel_select="vp9_decoder"
3019 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3020 vp9_vdpau_hwaccel_select="vp9_decoder"
3021 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3022 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3023 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3024 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3025 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3026 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3027
3028 # hardware-accelerated codecs
3029 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3030 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3031 omx_deps="libdl pthreads"
3032 omx_rpi_select="omx"
3033 qsv_deps="libmfx"
3034 qsvdec_select="qsv"
3035 qsvenc_select="qsv"
3036 qsvvpp_select="qsv"
3037 vaapi_encode_deps="vaapi"
3038 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3039
3040 hwupload_cuda_filter_deps="ffnvcodec"
3041 scale_npp_filter_deps="ffnvcodec libnpp"
3042 scale_cuda_filter_deps="ffnvcodec"
3043 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3044 thumbnail_cuda_filter_deps="ffnvcodec"
3045 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3046 transpose_npp_filter_deps="ffnvcodec libnpp"
3047 overlay_cuda_filter_deps="ffnvcodec"
3048 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3049
3050 amf_deps_any="libdl LoadLibrary"
3051 nvenc_deps="ffnvcodec"
3052 nvenc_deps_any="libdl LoadLibrary"
3053 nvenc_encoder_deps="nvenc"
3054
3055 aac_mf_encoder_deps="mediafoundation"
3056 ac3_mf_encoder_deps="mediafoundation"
3057 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3058 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3059 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3060 h264_amf_encoder_deps="amf"
3061 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3062 h264_cuvid_decoder_deps="cuvid"
3063 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3064 h264_mediacodec_decoder_deps="mediacodec"
3065 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3066 h264_mf_encoder_deps="mediafoundation"
3067 h264_mmal_decoder_deps="mmal"
3068 h264_nvenc_encoder_deps="nvenc"
3069 h264_nvenc_encoder_select="atsc_a53"
3070 h264_omx_encoder_deps="omx"
3071 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3072 h264_qsv_encoder_select="atsc_a53 qsvenc"
3073 h264_rkmpp_decoder_deps="rkmpp"
3074 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3075 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3076 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3077 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3078 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3079 hevc_amf_encoder_deps="amf"
3080 hevc_cuvid_decoder_deps="cuvid"
3081 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3082 hevc_mediacodec_decoder_deps="mediacodec"
3083 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3084 hevc_mf_encoder_deps="mediafoundation"
3085 hevc_nvenc_encoder_deps="nvenc"
3086 hevc_nvenc_encoder_select="atsc_a53"
3087 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3088 hevc_qsv_encoder_select="hevcparse qsvenc"
3089 hevc_rkmpp_decoder_deps="rkmpp"
3090 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3091 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3092 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3093 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3094 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3095 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3096 mjpeg_cuvid_decoder_deps="cuvid"
3097 mjpeg_qsv_decoder_select="qsvdec"
3098 mjpeg_qsv_encoder_deps="libmfx"
3099 mjpeg_qsv_encoder_select="qsvenc"
3100 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3101 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3102 mp3_mf_encoder_deps="mediafoundation"
3103 mpeg1_cuvid_decoder_deps="cuvid"
3104 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3105 mpeg2_crystalhd_decoder_select="crystalhd"
3106 mpeg2_cuvid_decoder_deps="cuvid"
3107 mpeg2_mmal_decoder_deps="mmal"
3108 mpeg2_mediacodec_decoder_deps="mediacodec"
3109 mpeg2_qsv_decoder_select="qsvdec"
3110 mpeg2_qsv_encoder_select="qsvenc"
3111 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3112 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3113 mpeg4_crystalhd_decoder_select="crystalhd"
3114 mpeg4_cuvid_decoder_deps="cuvid"
3115 mpeg4_mediacodec_decoder_deps="mediacodec"
3116 mpeg4_mmal_decoder_deps="mmal"
3117 mpeg4_omx_encoder_deps="omx"
3118 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3119 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3120 msmpeg4_crystalhd_decoder_select="crystalhd"
3121 nvenc_h264_encoder_select="h264_nvenc_encoder"
3122 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3123 vc1_crystalhd_decoder_select="crystalhd"
3124 vc1_cuvid_decoder_deps="cuvid"
3125 vc1_mmal_decoder_deps="mmal"
3126 vc1_qsv_decoder_select="qsvdec"
3127 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3128 vp8_cuvid_decoder_deps="cuvid"
3129 vp8_mediacodec_decoder_deps="mediacodec"
3130 vp8_qsv_decoder_select="qsvdec"
3131 vp8_rkmpp_decoder_deps="rkmpp"
3132 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3133 vp8_vaapi_encoder_select="vaapi_encode"
3134 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3135 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3136 vp9_cuvid_decoder_deps="cuvid"
3137 vp9_mediacodec_decoder_deps="mediacodec"
3138 vp9_qsv_decoder_select="qsvdec"
3139 vp9_rkmpp_decoder_deps="rkmpp"
3140 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3141 vp9_vaapi_encoder_select="vaapi_encode"
3142 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3143 vp9_qsv_encoder_select="qsvenc"
3144 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3145 wmv3_crystalhd_decoder_select="crystalhd"
3146 av1_qsv_decoder_select="qsvdec"
3147
3148 # parsers
3149 aac_parser_select="adts_header"
3150 av1_parser_select="cbs_av1"
3151 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3152 hevc_parser_select="hevcparse"
3153 mpegaudio_parser_select="mpegaudioheader"
3154 mpegvideo_parser_select="mpegvideo"
3155 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3156 vc1_parser_select="vc1dsp"
3157
3158 # bitstream_filters
3159 aac_adtstoasc_bsf_select="adts_header"
3160 av1_frame_merge_bsf_select="cbs_av1"
3161 av1_frame_split_bsf_select="cbs_av1"
3162 av1_metadata_bsf_select="cbs_av1"
3163 eac3_core_bsf_select="ac3_parser"
3164 filter_units_bsf_select="cbs"
3165 h264_metadata_bsf_deps="const_nan"
3166 h264_metadata_bsf_select="cbs_h264"
3167 h264_redundant_pps_bsf_select="cbs_h264"
3168 hevc_metadata_bsf_select="cbs_h265"
3169 mjpeg2jpeg_bsf_select="jpegtables"
3170 mpeg2_metadata_bsf_select="cbs_mpeg2"
3171 trace_headers_bsf_select="cbs"
3172 vp9_metadata_bsf_select="cbs_vp9"
3173
3174 # external libraries
3175 aac_at_decoder_deps="audiotoolbox"
3176 aac_at_decoder_select="aac_adtstoasc_bsf"
3177 ac3_at_decoder_deps="audiotoolbox"
3178 ac3_at_decoder_select="ac3_parser"
3179 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3180 alac_at_decoder_deps="audiotoolbox"
3181 amr_nb_at_decoder_deps="audiotoolbox"
3182 avisynth_deps_any="libdl LoadLibrary"
3183 avisynth_demuxer_deps="avisynth"
3184 avisynth_demuxer_select="riffdec"
3185 eac3_at_decoder_deps="audiotoolbox"
3186 eac3_at_decoder_select="ac3_parser"
3187 gsm_ms_at_decoder_deps="audiotoolbox"
3188 ilbc_at_decoder_deps="audiotoolbox"
3189 mp1_at_decoder_deps="audiotoolbox"
3190 mp2_at_decoder_deps="audiotoolbox"
3191 mp3_at_decoder_deps="audiotoolbox"
3192 mp1_at_decoder_select="mpegaudioheader"
3193 mp2_at_decoder_select="mpegaudioheader"
3194 mp3_at_decoder_select="mpegaudioheader"
3195 pcm_alaw_at_decoder_deps="audiotoolbox"
3196 pcm_mulaw_at_decoder_deps="audiotoolbox"
3197 qdmc_decoder_select="fft"
3198 qdmc_at_decoder_deps="audiotoolbox"
3199 qdm2_at_decoder_deps="audiotoolbox"
3200 aac_at_encoder_deps="audiotoolbox"
3201 aac_at_encoder_select="audio_frame_queue"
3202 alac_at_encoder_deps="audiotoolbox"
3203 alac_at_encoder_select="audio_frame_queue"
3204 ilbc_at_encoder_deps="audiotoolbox"
3205 ilbc_at_encoder_select="audio_frame_queue"
3206 pcm_alaw_at_encoder_deps="audiotoolbox"
3207 pcm_alaw_at_encoder_select="audio_frame_queue"
3208 pcm_mulaw_at_encoder_deps="audiotoolbox"
3209 pcm_mulaw_at_encoder_select="audio_frame_queue"
3210 chromaprint_muxer_deps="chromaprint"
3211 h264_videotoolbox_encoder_deps="pthreads"
3212 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3213 hevc_videotoolbox_encoder_deps="pthreads"
3214 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3215 libaom_av1_decoder_deps="libaom"
3216 libaom_av1_encoder_deps="libaom"
3217 libaom_av1_encoder_select="extract_extradata_bsf"
3218 libaribb24_decoder_deps="libaribb24"
3219 libcelt_decoder_deps="libcelt"
3220 libcodec2_decoder_deps="libcodec2"
3221 libcodec2_encoder_deps="libcodec2"
3222 libdav1d_decoder_deps="libdav1d"
3223 libdav1d_decoder_select="atsc_a53"
3224 libdavs2_decoder_deps="libdavs2"
3225 libfdk_aac_decoder_deps="libfdk_aac"
3226 libfdk_aac_encoder_deps="libfdk_aac"
3227 libfdk_aac_encoder_select="audio_frame_queue"
3228 libgme_demuxer_deps="libgme"
3229 libgsm_decoder_deps="libgsm"
3230 libgsm_encoder_deps="libgsm"
3231 libgsm_ms_decoder_deps="libgsm"
3232 libgsm_ms_encoder_deps="libgsm"
3233 libilbc_decoder_deps="libilbc"
3234 libilbc_encoder_deps="libilbc"
3235 libkvazaar_encoder_deps="libkvazaar"
3236 libmodplug_demuxer_deps="libmodplug"
3237 libmp3lame_encoder_deps="libmp3lame"
3238 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3239 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3240 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3241 libopencore_amrnb_encoder_select="audio_frame_queue"
3242 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3243 libopenh264_decoder_deps="libopenh264"
3244 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3245 libopenh264_encoder_deps="libopenh264"
3246 libopenjpeg_decoder_deps="libopenjpeg"
3247 libopenjpeg_encoder_deps="libopenjpeg"
3248 libopenmpt_demuxer_deps="libopenmpt"
3249 libopus_decoder_deps="libopus"
3250 libopus_encoder_deps="libopus"
3251 libopus_encoder_select="audio_frame_queue"
3252 librav1e_encoder_deps="librav1e"
3253 librav1e_encoder_select="extract_extradata_bsf"
3254 librsvg_decoder_deps="librsvg"
3255 libshine_encoder_deps="libshine"
3256 libshine_encoder_select="audio_frame_queue"
3257 libspeex_decoder_deps="libspeex"
3258 libspeex_encoder_deps="libspeex"
3259 libspeex_encoder_select="audio_frame_queue"
3260 libsvtav1_encoder_deps="libsvtav1"
3261 libtheora_encoder_deps="libtheora"
3262 libtwolame_encoder_deps="libtwolame"
3263 libuavs3d_decoder_deps="libuavs3d"
3264 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3265 libvorbis_decoder_deps="libvorbis"
3266 libvorbis_encoder_deps="libvorbis libvorbisenc"
3267 libvorbis_encoder_select="audio_frame_queue"
3268 libvpx_vp8_decoder_deps="libvpx"
3269 libvpx_vp8_encoder_deps="libvpx"
3270 libvpx_vp9_decoder_deps="libvpx"
3271 libvpx_vp9_encoder_deps="libvpx"
3272 libwebp_encoder_deps="libwebp"
3273 libwebp_anim_encoder_deps="libwebp"
3274 libx262_encoder_deps="libx262"
3275 libx264_encoder_deps="libx264"
3276 libx264_encoder_select="atsc_a53"
3277 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3278 libx264rgb_encoder_select="libx264_encoder"
3279 libx265_encoder_deps="libx265"
3280 libxavs_encoder_deps="libxavs"
3281 libxavs2_encoder_deps="libxavs2"
3282 libxvid_encoder_deps="libxvid"
3283 libzvbi_teletext_decoder_deps="libzvbi"
3284 vapoursynth_demuxer_deps="vapoursynth"
3285 videotoolbox_suggest="coreservices"
3286 videotoolbox_deps="corefoundation coremedia corevideo"
3287 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3288
3289 # demuxers / muxers
3290 ac3_demuxer_select="ac3_parser"
3291 act_demuxer_select="riffdec"
3292 aiff_muxer_select="iso_media"
3293 asf_demuxer_select="riffdec"
3294 asf_o_demuxer_select="riffdec"
3295 asf_muxer_select="riffenc"
3296 asf_stream_muxer_select="asf_muxer"
3297 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3298 avi_demuxer_select="iso_media riffdec exif"
3299 avi_muxer_select="riffenc"
3300 caf_demuxer_select="iso_media riffdec"
3301 caf_muxer_select="iso_media"
3302 dash_muxer_select="mp4_muxer"
3303 dash_demuxer_deps="libxml2"
3304 dirac_demuxer_select="dirac_parser"
3305 dts_demuxer_select="dca_parser"
3306 dtshd_demuxer_select="dca_parser"
3307 dv_demuxer_select="dvprofile"
3308 dv_muxer_select="dvprofile"
3309 dxa_demuxer_select="riffdec"
3310 eac3_demuxer_select="ac3_parser"
3311 f4v_muxer_select="mov_muxer"
3312 fifo_muxer_deps="threads"
3313 flac_demuxer_select="flac_parser"
3314 flv_muxer_select="aac_adtstoasc_bsf"
3315 gxf_muxer_select="pcm_rechunk_bsf"
3316 hds_muxer_select="flv_muxer"
3317 hls_muxer_select="mpegts_muxer"
3318 hls_muxer_suggest="gcrypt openssl"
3319 image2_alias_pix_demuxer_select="image2_demuxer"
3320 image2_brender_pix_demuxer_select="image2_demuxer"
3321 ipod_muxer_select="mov_muxer"
3322 ismv_muxer_select="mov_muxer"
3323 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3324 latm_muxer_select="aac_adtstoasc_bsf"
3325 matroska_audio_muxer_select="matroska_muxer"
3326 matroska_demuxer_select="iso_media riffdec"
3327 matroska_demuxer_suggest="bzlib lzo zlib"
3328 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3329 mlp_demuxer_select="mlp_parser"
3330 mmf_muxer_select="riffenc"
3331 mov_demuxer_select="iso_media riffdec"
3332 mov_demuxer_suggest="zlib"
3333 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3334 mp3_demuxer_select="mpegaudio_parser"
3335 mp3_muxer_select="mpegaudioheader"
3336 mp4_muxer_select="mov_muxer"
3337 mpegts_demuxer_select="iso_media"
3338 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3339 mpegtsraw_demuxer_select="mpegts_demuxer"
3340 mxf_muxer_select="golomb pcm_rechunk_bsf"
3341 mxf_d10_muxer_select="mxf_muxer"
3342 mxf_opatom_muxer_select="mxf_muxer"
3343 nut_muxer_select="riffenc"
3344 nuv_demuxer_select="riffdec"
3345 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3346 oga_muxer_select="ogg_muxer"
3347 ogg_demuxer_select="dirac_parse"
3348 ogv_muxer_select="ogg_muxer"
3349 opus_muxer_select="ogg_muxer"
3350 psp_muxer_select="mov_muxer"
3351 rtp_demuxer_select="sdp_demuxer"
3352 rtp_muxer_select="golomb jpegtables"
3353 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3354 rtsp_demuxer_select="http_protocol rtpdec"
3355 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3356 sap_demuxer_select="sdp_demuxer"
3357 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3358 sdp_demuxer_select="rtpdec"
3359 smoothstreaming_muxer_select="ismv_muxer"
3360 spdif_demuxer_select="adts_header"
3361 spdif_muxer_select="adts_header"
3362 spx_muxer_select="ogg_muxer"
3363 swf_demuxer_suggest="zlib"
3364 tak_demuxer_select="tak_parser"
3365 truehd_demuxer_select="mlp_parser"
3366 tg2_muxer_select="mov_muxer"
3367 tgp_muxer_select="mov_muxer"
3368 vobsub_demuxer_select="mpegps_demuxer"
3369 w64_demuxer_select="wav_demuxer"
3370 w64_muxer_select="wav_muxer"
3371 wav_demuxer_select="riffdec"
3372 wav_muxer_select="riffenc"
3373 webm_chunk_muxer_select="webm_muxer"
3374 webm_muxer_select="iso_media riffenc"
3375 webm_dash_manifest_demuxer_select="matroska_demuxer"
3376 wtv_demuxer_select="mpegts_demuxer riffdec"
3377 wtv_muxer_select="mpegts_muxer riffenc"
3378 xmv_demuxer_select="riffdec"
3379 xwma_demuxer_select="riffdec"
3380
3381 # indevs / outdevs
3382 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3383 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3384 alsa_indev_deps="alsa"
3385 alsa_outdev_deps="alsa"
3386 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3387 avfoundation_indev_suggest="coregraphics applicationservices"
3388 avfoundation_indev_extralibs="-framework Foundation"
3389 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3390 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3391 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3392 caca_outdev_deps="libcaca"
3393 decklink_deps_any="libdl LoadLibrary"
3394 decklink_indev_deps="decklink threads"
3395 decklink_indev_extralibs="-lstdc++"
3396 decklink_outdev_deps="decklink threads"
3397 decklink_outdev_suggest="libklvanc"
3398 decklink_outdev_extralibs="-lstdc++"
3399 dshow_indev_deps="IBaseFilter"
3400 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3401 fbdev_indev_deps="linux_fb_h"
3402 fbdev_outdev_deps="linux_fb_h"
3403 gdigrab_indev_deps="CreateDIBSection"
3404 gdigrab_indev_extralibs="-lgdi32"
3405 gdigrab_indev_select="bmp_decoder"
3406 iec61883_indev_deps="libiec61883"
3407 jack_indev_deps="libjack"
3408 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3409 kmsgrab_indev_deps="libdrm"
3410 lavfi_indev_deps="avfilter"
3411 libcdio_indev_deps="libcdio"
3412 libdc1394_indev_deps="libdc1394"
3413 openal_indev_deps="openal"
3414 opengl_outdev_deps="opengl"
3415 opengl_outdev_suggest="sdl2"
3416 oss_indev_deps_any="sys_soundcard_h"
3417 oss_outdev_deps_any="sys_soundcard_h"
3418 pulse_indev_deps="libpulse"
3419 pulse_outdev_deps="libpulse"
3420 sdl2_outdev_deps="sdl2"
3421 sndio_indev_deps="sndio"
3422 sndio_outdev_deps="sndio"
3423 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3424 v4l2_indev_suggest="libv4l2"
3425 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3426 v4l2_outdev_suggest="libv4l2"
3427 vfwcap_indev_deps="vfw32 vfwcap_defines"
3428 xcbgrab_indev_deps="libxcb"
3429 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3430 xv_outdev_deps="xlib"
3431
3432 # protocols
3433 async_protocol_deps="threads"
3434 bluray_protocol_deps="libbluray"
3435 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3436 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3437 ffrtmpcrypt_protocol_select="tcp_protocol"
3438 ffrtmphttp_protocol_conflict="librtmp_protocol"
3439 ffrtmphttp_protocol_select="http_protocol"
3440 ftp_protocol_select="tcp_protocol"
3441 gopher_protocol_select="network"
3442 http_protocol_select="tcp_protocol"
3443 http_protocol_suggest="zlib"
3444 httpproxy_protocol_select="tcp_protocol"
3445 httpproxy_protocol_suggest="zlib"
3446 https_protocol_select="tls_protocol"
3447 https_protocol_suggest="zlib"
3448 icecast_protocol_select="http_protocol"
3449 mmsh_protocol_select="http_protocol"
3450 mmst_protocol_select="network"
3451 rtmp_protocol_conflict="librtmp_protocol"
3452 rtmp_protocol_select="tcp_protocol"
3453 rtmp_protocol_suggest="zlib"
3454 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3455 rtmpe_protocol_suggest="zlib"
3456 rtmps_protocol_conflict="librtmp_protocol"
3457 rtmps_protocol_select="tls_protocol"
3458 rtmps_protocol_suggest="zlib"
3459 rtmpt_protocol_select="ffrtmphttp_protocol"
3460 rtmpt_protocol_suggest="zlib"
3461 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3462 rtmpte_protocol_suggest="zlib"
3463 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3464 rtmpts_protocol_suggest="zlib"
3465 rtp_protocol_select="udp_protocol"
3466 schannel_conflict="openssl gnutls libtls mbedtls"
3467 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3468 sctp_protocol_select="network"
3469 securetransport_conflict="openssl gnutls libtls mbedtls"
3470 srtp_protocol_select="rtp_protocol srtp"
3471 tcp_protocol_select="network"
3472 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3473 tls_protocol_select="tcp_protocol"
3474 udp_protocol_select="network"
3475 udplite_protocol_select="network"
3476 unix_protocol_deps="sys_un_h"
3477 unix_protocol_select="network"
3478
3479 # external library protocols
3480 libamqp_protocol_deps="librabbitmq"
3481 libamqp_protocol_select="network"
3482 librtmp_protocol_deps="librtmp"
3483 librtmpe_protocol_deps="librtmp"
3484 librtmps_protocol_deps="librtmp"
3485 librtmpt_protocol_deps="librtmp"
3486 librtmpte_protocol_deps="librtmp"
3487 libsmbclient_protocol_deps="libsmbclient gplv3"
3488 libsrt_protocol_deps="libsrt"
3489 libsrt_protocol_select="network"
3490 libssh_protocol_deps="libssh"
3491 libtls_conflict="openssl gnutls mbedtls"
3492 libzmq_protocol_deps="libzmq"
3493 libzmq_protocol_select="network"
3494
3495 # filters
3496 afftdn_filter_deps="avcodec"
3497 afftdn_filter_select="fft"
3498 afftfilt_filter_deps="avcodec"
3499 afftfilt_filter_select="fft"
3500 afir_filter_deps="avcodec"
3501 afir_filter_select="rdft"
3502 amovie_filter_deps="avcodec avformat"
3503 aresample_filter_deps="swresample"
3504 asr_filter_deps="pocketsphinx"
3505 ass_filter_deps="libass"
3506 atempo_filter_deps="avcodec"
3507 atempo_filter_select="rdft"
3508 avgblur_opencl_filter_deps="opencl"
3509 avgblur_vulkan_filter_deps="vulkan libglslang"
3510 azmq_filter_deps="libzmq"
3511 blackframe_filter_deps="gpl"
3512 bm3d_filter_deps="avcodec"
3513 bm3d_filter_select="dct"
3514 boxblur_filter_deps="gpl"
3515 boxblur_opencl_filter_deps="opencl gpl"
3516 bs2b_filter_deps="libbs2b"
3517 chromaber_vulkan_filter_deps="vulkan libglslang"
3518 colorkey_opencl_filter_deps="opencl"
3519 colormatrix_filter_deps="gpl"
3520 convolution_opencl_filter_deps="opencl"
3521 convolve_filter_deps="avcodec"
3522 convolve_filter_select="fft"
3523 coreimage_filter_deps="coreimage appkit"
3524 coreimage_filter_extralibs="-framework OpenGL"
3525 coreimagesrc_filter_deps="coreimage appkit"
3526 coreimagesrc_filter_extralibs="-framework OpenGL"
3527 cover_rect_filter_deps="avcodec avformat gpl"
3528 cropdetect_filter_deps="gpl"
3529 deconvolve_filter_deps="avcodec"
3530 deconvolve_filter_select="fft"
3531 deinterlace_qsv_filter_deps="libmfx"
3532 deinterlace_vaapi_filter_deps="vaapi"
3533 delogo_filter_deps="gpl"
3534 denoise_vaapi_filter_deps="vaapi"
3535 derain_filter_select="dnn"
3536 deshake_filter_select="pixelutils"
3537 deshake_opencl_filter_deps="opencl"
3538 dilation_opencl_filter_deps="opencl"
3539 dnn_processing_filter_select="dnn"
3540 drawtext_filter_deps="libfreetype"
3541 drawtext_filter_suggest="libfontconfig libfribidi"
3542 elbg_filter_deps="avcodec"
3543 eq_filter_deps="gpl"
3544 erosion_opencl_filter_deps="opencl"
3545 fftfilt_filter_deps="avcodec"
3546 fftfilt_filter_select="rdft"
3547 fftdnoiz_filter_deps="avcodec"
3548 fftdnoiz_filter_select="fft"
3549 find_rect_filter_deps="avcodec avformat gpl"
3550 firequalizer_filter_deps="avcodec"
3551 firequalizer_filter_select="rdft"
3552 flite_filter_deps="libflite"
3553 framerate_filter_select="scene_sad"
3554 freezedetect_filter_select="scene_sad"
3555 frei0r_filter_deps="frei0r libdl"
3556 frei0r_src_filter_deps="frei0r libdl"
3557 fspp_filter_deps="gpl"
3558 headphone_filter_select="fft"
3559 histeq_filter_deps="gpl"
3560 hqdn3d_filter_deps="gpl"
3561 interlace_filter_deps="gpl"
3562 kerndeint_filter_deps="gpl"
3563 ladspa_filter_deps="ladspa libdl"
3564 lensfun_filter_deps="liblensfun version3"
3565 lv2_filter_deps="lv2"
3566 mcdeint_filter_deps="avcodec gpl"
3567 movie_filter_deps="avcodec avformat"
3568 mpdecimate_filter_deps="gpl"
3569 mpdecimate_filter_select="pixelutils"
3570 minterpolate_filter_select="scene_sad"
3571 mptestsrc_filter_deps="gpl"
3572 negate_filter_deps="lut_filter"
3573 nlmeans_opencl_filter_deps="opencl"
3574 nnedi_filter_deps="gpl"
3575 ocr_filter_deps="libtesseract"
3576 ocv_filter_deps="libopencv"
3577 openclsrc_filter_deps="opencl"
3578 overlay_opencl_filter_deps="opencl"
3579 overlay_qsv_filter_deps="libmfx"
3580 overlay_qsv_filter_select="qsvvpp"
3581 overlay_vulkan_filter_deps="vulkan libglslang"
3582 owdenoise_filter_deps="gpl"
3583 pad_opencl_filter_deps="opencl"
3584 pan_filter_deps="swresample"
3585 perspective_filter_deps="gpl"
3586 phase_filter_deps="gpl"
3587 pp7_filter_deps="gpl"
3588 pp_filter_deps="gpl postproc"
3589 prewitt_opencl_filter_deps="opencl"
3590 procamp_vaapi_filter_deps="vaapi"
3591 program_opencl_filter_deps="opencl"
3592 pullup_filter_deps="gpl"
3593 removelogo_filter_deps="avcodec avformat swscale"
3594 repeatfields_filter_deps="gpl"
3595 resample_filter_deps="avresample"
3596 roberts_opencl_filter_deps="opencl"
3597 rubberband_filter_deps="librubberband"
3598 sab_filter_deps="gpl swscale"
3599 scale2ref_filter_deps="swscale"
3600 scale_filter_deps="swscale"
3601 scale_qsv_filter_deps="libmfx"
3602 scdet_filter_select="scene_sad"
3603 select_filter_select="scene_sad"
3604 sharpness_vaapi_filter_deps="vaapi"
3605 showcqt_filter_deps="avcodec avformat swscale"
3606 showcqt_filter_suggest="libfontconfig libfreetype"
3607 showcqt_filter_select="fft"
3608 showfreqs_filter_deps="avcodec"
3609 showfreqs_filter_select="fft"
3610 showspatial_filter_select="fft"
3611 showspectrum_filter_deps="avcodec"
3612 showspectrum_filter_select="fft"
3613 showspectrumpic_filter_deps="avcodec"
3614 showspectrumpic_filter_select="fft"
3615 signature_filter_deps="gpl avcodec avformat"
3616 sinc_filter_select="rdft"
3617 smartblur_filter_deps="gpl swscale"
3618 sobel_opencl_filter_deps="opencl"
3619 sofalizer_filter_deps="libmysofa avcodec"
3620 sofalizer_filter_select="fft"
3621 spectrumsynth_filter_deps="avcodec"
3622 spectrumsynth_filter_select="fft"
3623 spp_filter_deps="gpl avcodec"
3624 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3625 sr_filter_deps="avformat swscale"
3626 sr_filter_select="dnn"
3627 stereo3d_filter_deps="gpl"
3628 subtitles_filter_deps="avformat avcodec libass"
3629 super2xsai_filter_deps="gpl"
3630 pixfmts_super2xsai_test_deps="super2xsai_filter"
3631 superequalizer_filter_select="rdft"
3632 surround_filter_select="rdft"
3633 tinterlace_filter_deps="gpl"
3634 tinterlace_merge_test_deps="tinterlace_filter"
3635 tinterlace_pad_test_deps="tinterlace_filter"
3636 tonemap_filter_deps="const_nan"
3637 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3638 tonemap_opencl_filter_deps="opencl const_nan"
3639 transpose_opencl_filter_deps="opencl"
3640 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3641 unsharp_opencl_filter_deps="opencl"
3642 uspp_filter_deps="gpl avcodec"
3643 vaguedenoiser_filter_deps="gpl"
3644 vidstabdetect_filter_deps="libvidstab"
3645 vidstabtransform_filter_deps="libvidstab"
3646 libvmaf_filter_deps="libvmaf pthreads"
3647 zmq_filter_deps="libzmq"
3648 zoompan_filter_deps="swscale"
3649 zscale_filter_deps="libzimg const_nan"
3650 scale_vaapi_filter_deps="vaapi"
3651 scale_vulkan_filter_deps="vulkan libglslang"
3652 vpp_qsv_filter_deps="libmfx"
3653 vpp_qsv_filter_select="qsvvpp"
3654 xfade_opencl_filter_deps="opencl"
3655 yadif_cuda_filter_deps="ffnvcodec"
3656 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3657
3658 # examples
3659 avio_list_dir_deps="avformat avutil"
3660 avio_reading_deps="avformat avcodec avutil"
3661 decode_audio_example_deps="avcodec avutil"
3662 decode_video_example_deps="avcodec avutil"
3663 demuxing_decoding_example_deps="avcodec avformat avutil"
3664 encode_audio_example_deps="avcodec avutil"
3665 encode_video_example_deps="avcodec avutil"
3666 extract_mvs_example_deps="avcodec avformat avutil"
3667 filter_audio_example_deps="avfilter avutil"
3668 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3669 filtering_video_example_deps="avfilter avcodec avformat avutil"
3670 http_multiclient_example_deps="avformat avutil fork"
3671 hw_decode_example_deps="avcodec avformat avutil"
3672 metadata_example_deps="avformat avutil"
3673 muxing_example_deps="avcodec avformat avutil swscale"
3674 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3675 remuxing_example_deps="avcodec avformat avutil"
3676 resampling_audio_example_deps="avutil swresample"
3677 scaling_video_example_deps="avutil swscale"
3678 transcode_aac_example_deps="avcodec avformat swresample"
3679 transcoding_example_deps="avfilter avcodec avformat avutil"
3680 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3681 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3682
3683 # EXTRALIBS_LIST
3684 cpu_init_extralibs="pthreads_extralibs"
3685 cws2fws_extralibs="zlib_extralibs"
3686
3687 # libraries, in any order
3688 avcodec_deps="avutil"
3689 avcodec_suggest="libm"
3690 avcodec_select="null_bsf"
3691 avdevice_deps="avformat avcodec avutil"
3692 avdevice_suggest="libm"
3693 avfilter_deps="avutil"
3694 avfilter_suggest="libm"
3695 avformat_deps="avcodec avutil"
3696 avformat_suggest="libm network zlib"
3697 avresample_deps="avutil"
3698 avresample_suggest="libm"
3699 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3700 postproc_deps="avutil gpl"
3701 postproc_suggest="libm"
3702 swresample_deps="avutil"
3703 swresample_suggest="libm libsoxr"
3704 swscale_deps="avutil"
3705 swscale_suggest="libm"
3706
3707 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3708 avfilter_extralibs="pthreads_extralibs"
3709 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3710
3711 # programs
3712 ffmpeg_deps="avcodec avfilter avformat"
3713 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3714                hflip_filter null_filter
3715                transpose_filter trim_filter vflip_filter"
3716 ffmpeg_suggest="ole32 psapi shell32"
3717 ffplay_deps="avcodec avformat swscale swresample sdl2"
3718 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3719 ffplay_suggest="shell32"
3720 ffprobe_deps="avcodec avformat"
3721 ffprobe_suggest="shell32"
3722
3723 # documentation
3724 podpages_deps="perl"
3725 manpages_deps="perl pod2man"
3726 htmlpages_deps="perl"
3727 htmlpages_deps_any="makeinfo_html texi2html"
3728 txtpages_deps="perl makeinfo"
3729 doc_deps_any="manpages htmlpages podpages txtpages"
3730
3731 # default parameters
3732
3733 logfile="ffbuild/config.log"
3734
3735 # installation paths
3736 prefix_default="/usr/local"
3737 bindir_default='${prefix}/bin'
3738 datadir_default='${prefix}/share/ffmpeg'
3739 docdir_default='${prefix}/share/doc/ffmpeg'
3740 incdir_default='${prefix}/include'
3741 libdir_default='${prefix}/lib'
3742 mandir_default='${prefix}/share/man'
3743
3744 # toolchain
3745 ar_default="ar"
3746 cc_default="gcc"
3747 cxx_default="g++"
3748 host_cc_default="gcc"
3749 doxygen_default="doxygen"
3750 install="install"
3751 ln_s_default="ln -s -f"
3752 nm_default="nm -g"
3753 pkg_config_default=pkg-config
3754 ranlib_default="ranlib"
3755 strip_default="strip"
3756 version_script='--version-script'
3757 objformat="elf32"
3758 x86asmexe_default="nasm"
3759 windres_default="windres"
3760 striptype="direct"
3761
3762 # OS
3763 target_os_default=$(tolower $(uname -s))
3764 host_os=$target_os_default
3765
3766 # machine
3767 if test "$target_os_default" = aix; then
3768     arch_default=$(uname -p)
3769     strip_default="strip -X32_64"
3770     nm_default="nm -g -X32_64"
3771 else
3772     arch_default=$(uname -m)
3773 fi
3774 cpu="generic"
3775 intrinsics="none"
3776
3777 # configurable options
3778 enable $PROGRAM_LIST
3779 enable $DOCUMENT_LIST
3780 enable $EXAMPLE_LIST
3781 enable $(filter_out avresample $LIBRARY_LIST)
3782 enable stripping
3783
3784 enable asm
3785 enable debug
3786 enable doc
3787 enable faan faandct faanidct
3788 enable large_tests
3789 enable optimizations
3790 enable runtime_cpudetect
3791 enable safe_bitstream_reader
3792 enable static
3793 enable swscale_alpha
3794 enable valgrind_backtrace
3795
3796 sws_max_filter_size_default=256
3797 set_default sws_max_filter_size
3798
3799 # internal components are enabled by default
3800 enable $EXTRALIBS_LIST
3801
3802 # Avoid external, non-system, libraries getting enabled by dependency resolution
3803 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3804
3805 # build settings
3806 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3807 LIBPREF="lib"
3808 LIBSUF=".a"
3809 FULLNAME='$(NAME)$(BUILDSUF)'
3810 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3811 SLIBPREF="lib"
3812 SLIBSUF=".so"
3813 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3814 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3815 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3816 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3817 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3818 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3819 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3820
3821 asflags_filter=echo
3822 cflags_filter=echo
3823 ldflags_filter=echo
3824
3825 AS_C='-c'
3826 AS_O='-o $@'
3827 CC_C='-c'
3828 CC_E='-E -o $@'
3829 CC_O='-o $@'
3830 CXX_C='-c'
3831 CXX_O='-o $@'
3832 OBJCC_C='-c'
3833 OBJCC_E='-E -o $@'
3834 OBJCC_O='-o $@'
3835 X86ASM_O='-o $@'
3836 LD_O='-o $@'
3837 LD_LIB='-l%'
3838 LD_PATH='-L'
3839 HOSTCC_C='-c'
3840 HOSTCC_E='-E -o $@'
3841 HOSTCC_O='-o $@'
3842 HOSTLD_O='-o $@'
3843 NVCC_C='-c'
3844 NVCC_O='-o $@'
3845
3846 host_extralibs='-lm'
3847 host_cflags_filter=echo
3848 host_ldflags_filter=echo
3849
3850 target_path='$(CURDIR)'
3851
3852 # since the object filename is not given with the -MM flag, the compiler
3853 # is only able to print the basename, and we must add the path ourselves
3854 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3855 DEPFLAGS='-MM'
3856
3857 mkdir -p ffbuild
3858
3859 # find source path
3860 if test -f configure; then
3861     source_path=.
3862 elif test -f src/configure; then
3863     source_path=src
3864 else
3865     source_path=$(cd $(dirname "$0"); pwd)
3866     case "$source_path" in
3867         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3868     esac
3869     test -e "$source_path/config.h" &&
3870         die "Out of tree builds are impossible with config.h in source dir."
3871 fi
3872
3873 for v in "$@"; do
3874     r=${v#*=}
3875     l=${v%"$r"}
3876     r=$(sh_quote "$r")
3877     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3878 done
3879
3880 find_things_extern(){
3881     thing=$1
3882     pattern=$2
3883     file=$source_path/$3
3884     out=${4:-$thing}
3885     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3886 }
3887
3888 find_filters_extern(){
3889     file=$source_path/$1
3890     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3891 }
3892
3893 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3894 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3895 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3896 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3897 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3898 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3899 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3900 CODEC_LIST="
3901     $ENCODER_LIST
3902     $DECODER_LIST
3903 "
3904 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3905 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3906 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3907 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3908
3909 AVCODEC_COMPONENTS_LIST="
3910     $BSF_LIST
3911     $DECODER_LIST
3912     $ENCODER_LIST
3913     $HWACCEL_LIST
3914     $PARSER_LIST
3915 "
3916
3917 AVDEVICE_COMPONENTS_LIST="
3918     $INDEV_LIST
3919     $OUTDEV_LIST
3920 "
3921
3922 AVFILTER_COMPONENTS_LIST="
3923     $FILTER_LIST
3924 "
3925
3926 AVFORMAT_COMPONENTS_LIST="
3927     $DEMUXER_LIST
3928     $MUXER_LIST
3929     $PROTOCOL_LIST
3930 "
3931
3932 ALL_COMPONENTS="
3933     $AVCODEC_COMPONENTS_LIST
3934     $AVDEVICE_COMPONENTS_LIST
3935     $AVFILTER_COMPONENTS_LIST
3936     $AVFORMAT_COMPONENTS_LIST
3937 "
3938
3939 for n in $COMPONENT_LIST; do
3940     v=$(toupper ${n%s})_LIST
3941     eval enable \$$v
3942     eval ${n}_if_any="\$$v"
3943 done
3944
3945 enable $ARCH_EXT_LIST
3946
3947 die_unknown(){
3948     echo "Unknown option \"$1\"."
3949     echo "See $0 --help for available options."
3950     exit 1
3951 }
3952
3953 print_in_columns() {
3954     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3955     {
3956         num_cols = width > col_width ? int(width / col_width) : 1;
3957         num_rows = int((NF + num_cols-1) / num_cols);
3958         y = x = 1;
3959         for (y = 1; y <= num_rows; y++) {
3960             i = y;
3961             for (x = 1; x <= num_cols; x++) {
3962                 if (i <= NF) {
3963                   line = sprintf("%s%-" col_width "s", line, $i);
3964                 }
3965                 i = i + num_rows;
3966             }
3967             print line; line = "";
3968         }
3969     }' | sed 's/ *$//'
3970 }
3971
3972 show_list() {
3973     suffix=_$1
3974     shift
3975     echo $* | sed s/$suffix//g | print_in_columns
3976     exit 0
3977 }
3978
3979 rand_list(){
3980     IFS=', '
3981     set -- $*
3982     unset IFS
3983     for thing; do
3984         comp=${thing%:*}
3985         prob=${thing#$comp}
3986         prob=${prob#:}
3987         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3988         echo "prob ${prob:-0.5}"
3989         printf '%s\n' $comp
3990     done
3991 }
3992
3993 do_random(){
3994     action=$1
3995     shift
3996     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3997     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3998 }
3999
4000 for opt do
4001     optval="${opt#*=}"
4002     case "$opt" in
4003         --extra-ldflags=*)
4004             add_ldflags $optval
4005         ;;
4006         --extra-ldexeflags=*)
4007             add_ldexeflags $optval
4008         ;;
4009         --extra-ldsoflags=*)
4010             add_ldsoflags $optval
4011         ;;
4012         --extra-ldlibflags=*)
4013             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4014                  "removed in the future. Use --extra-ldsoflags instead."
4015             add_ldsoflags $optval
4016         ;;
4017         --extra-libs=*)
4018             add_extralibs $optval
4019         ;;
4020         --disable-devices)
4021             disable $INDEV_LIST $OUTDEV_LIST
4022         ;;
4023         --enable-debug=*)
4024             debuglevel="$optval"
4025         ;;
4026         --disable-programs)
4027             disable $PROGRAM_LIST
4028         ;;
4029         --disable-everything)
4030             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4031         ;;
4032         --disable-all)
4033             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4034             disable $LIBRARY_LIST $PROGRAM_LIST doc
4035             enable avutil
4036         ;;
4037         --enable-random|--disable-random)
4038             action=${opt%%-random}
4039             do_random ${action#--} $COMPONENT_LIST
4040         ;;
4041         --enable-random=*|--disable-random=*)
4042             action=${opt%%-random=*}
4043             do_random ${action#--} $optval
4044         ;;
4045         --enable-sdl)
4046             enable sdl2
4047         ;;
4048         --enable-*=*|--disable-*=*)
4049             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4050             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4051             eval list=\$$(toupper $thing)_LIST
4052             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4053             list=$(filter "$name" $list)
4054             [ "$list" = "" ] && warn "Option $opt did not match anything"
4055             test $action = enable && warn_if_gets_disabled $list
4056             $action $list
4057         ;;
4058         --enable-yasm|--disable-yasm)
4059             warn "The ${opt} option is only provided for compatibility and will be\n"\
4060                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4061             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4062         ;;
4063         --yasmexe=*)
4064             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4065                  "removed in the future. Use --x86asmexe instead."
4066             x86asmexe="$optval"
4067         ;;
4068         --enable-?*|--disable-?*)
4069             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4070             if is_in $option $COMPONENT_LIST; then
4071                 test $action = disable && action=unset
4072                 eval $action \$$(toupper ${option%s})_LIST
4073             elif is_in $option $CMDLINE_SELECT; then
4074                 $action $option
4075             else
4076                 die_unknown $opt
4077             fi
4078         ;;
4079         --list-*)
4080             NAME="${opt#--list-}"
4081             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4082             NAME=${NAME%s}
4083             eval show_list $NAME \$$(toupper $NAME)_LIST
4084         ;;
4085         --help|-h) show_help
4086         ;;
4087         --quiet|-q) quiet=yes
4088         ;;
4089         --fatal-warnings) enable fatal_warnings
4090         ;;
4091         --libfuzzer=*)
4092             libfuzzer_path="$optval"
4093         ;;
4094         *)
4095             optname="${opt%%=*}"
4096             optname="${optname#--}"
4097             optname=$(echo "$optname" | sed 's/-/_/g')
4098             if is_in $optname $CMDLINE_SET; then
4099                 eval $optname='$optval'
4100             elif is_in $optname $CMDLINE_APPEND; then
4101                 append $optname "$optval"
4102             else
4103                 die_unknown $opt
4104             fi
4105         ;;
4106     esac
4107 done
4108
4109 for e in $env; do
4110     eval "export $e"
4111 done
4112
4113 if disabled autodetect; then
4114
4115     # Unless iconv is explicitely disabled by the user, we still want to probe
4116     # for the iconv from the libc.
4117     disabled iconv || enable libc_iconv
4118
4119     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4120     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4121 fi
4122 # Mark specifically enabled, but normally autodetected libraries as requested.
4123 for lib in $AUTODETECT_LIBS; do
4124     enabled $lib && request $lib
4125 done
4126 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4127 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4128 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4129
4130 disabled logging && logfile=/dev/null
4131
4132 # command line configuration sanity checks
4133
4134 # we need to build at least one lib type
4135 if ! enabled_any static shared; then
4136     cat <<EOF
4137 At least one library type must be built.
4138 Specify --enable-static to build the static libraries or --enable-shared to
4139 build the shared libraries as well. To only build the shared libraries specify
4140 --disable-static in addition to --enable-shared.
4141 EOF
4142     exit 1
4143 fi
4144
4145 die_license_disabled() {
4146     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4147 }
4148
4149 die_license_disabled_gpl() {
4150     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4151 }
4152
4153 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4154 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4155
4156 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4157 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4158
4159 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4160
4161 if enabled nonfree; then
4162     license="nonfree and unredistributable"
4163 elif enabled gplv3; then
4164     license="GPL version 3 or later"
4165 elif enabled lgplv3; then
4166     license="LGPL version 3 or later"
4167 elif enabled gpl; then
4168     license="GPL version 2 or later"
4169 else
4170     license="LGPL version 2.1 or later"
4171 fi
4172
4173 enabled_all gnutls openssl &&
4174     die "GnuTLS and OpenSSL must not be enabled at the same time."
4175
4176 enabled_all gnutls mbedtls &&
4177     die "GnuTLS and mbedTLS must not be enabled at the same time."
4178
4179 enabled_all openssl mbedtls &&
4180     die "OpenSSL and mbedTLS must not be enabled at the same time."
4181
4182 # Disable all the library-specific components if the library itself
4183 # is disabled, see AVCODEC_LIST and following _LIST variables.
4184
4185 disable_components(){
4186     disabled ${1} && disable $(
4187         eval components="\$$(toupper ${1})_COMPONENTS"
4188         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4189     )
4190 }
4191
4192 map 'disable_components $v' $LIBRARY_LIST
4193
4194 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4195 set >> $logfile
4196
4197 test -n "$valgrind" && toolchain="valgrind-memcheck"
4198
4199 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4200     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4201     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4202 }
4203
4204 case "$toolchain" in
4205     *-asan)
4206         cc_default="${toolchain%-asan}"
4207         add_cflags  -fsanitize=address
4208         add_ldflags -fsanitize=address
4209     ;;
4210     *-msan)
4211         cc_default="${toolchain%-msan}"
4212         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4213         add_ldflags -fsanitize=memory
4214     ;;
4215     *-tsan)
4216         cc_default="${toolchain%-tsan}"
4217         add_cflags  -fsanitize=thread
4218         add_ldflags -fsanitize=thread
4219         case "$toolchain" in
4220             gcc-tsan)
4221                 add_cflags  -fPIC
4222                 add_ldflags -fPIC
4223                 ;;
4224         esac
4225     ;;
4226     *-usan)
4227         cc_default="${toolchain%-usan}"
4228         add_cflags  -fsanitize=undefined
4229         add_ldflags -fsanitize=undefined
4230     ;;
4231     valgrind-*)
4232         target_exec_default="valgrind"
4233         case "$toolchain" in
4234             valgrind-massif)
4235                 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"
4236                 ;;
4237             valgrind-memcheck)
4238                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4239                 ;;
4240         esac
4241     ;;
4242     msvc)
4243         # Check whether the current MSVC version needs the C99 converter.
4244         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4245         # support enough of C99 to build ffmpeg. Default to the new
4246         # behaviour if the regexp was unable to match anything, since this
4247         # successfully parses the version number of existing supported
4248         # versions that require the converter (MSVC 2010 and 2012).
4249         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4250         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4251             cc_default="cl.exe"
4252             cxx_default="cl.exe"
4253         else
4254             die "Unsupported MSVC version (2013 or newer required)"
4255         fi
4256         ld_default="$source_path/compat/windows/mslink"
4257         nm_default="dumpbin.exe -symbols"
4258         ar_default="lib.exe"
4259         case "$arch" in
4260         aarch64|arm64)
4261             as_default="armasm64.exe"
4262             ;;
4263         arm*)
4264             as_default="armasm.exe"
4265             ;;
4266         esac
4267         target_os_default="win32"
4268         # Use a relative path for TMPDIR. This makes sure all the
4269         # ffconf temp files are written with a relative path, avoiding
4270         # issues with msys/win32 path conversion for MSVC parameters
4271         # such as -Fo<file> or -out:<file>.
4272         TMPDIR=.
4273     ;;
4274     icl)
4275         cc_default="icl"
4276         ld_default="xilink"
4277         nm_default="dumpbin -symbols"
4278         ar_default="xilib"
4279         target_os_default="win32"
4280         TMPDIR=.
4281     ;;
4282     gcov)
4283         add_cflags  -fprofile-arcs -ftest-coverage
4284         add_ldflags -fprofile-arcs -ftest-coverage
4285     ;;
4286     llvm-cov)
4287         add_cflags -fprofile-arcs -ftest-coverage
4288         add_ldflags --coverage
4289     ;;
4290     hardened)
4291         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4292         add_cflags   -fno-strict-overflow -fstack-protector-all
4293         add_ldflags  -Wl,-z,relro -Wl,-z,now
4294         add_cflags   -fPIE
4295         add_ldexeflags -fPIE -pie
4296     ;;
4297     ?*)
4298         die "Unknown toolchain $toolchain"
4299     ;;
4300 esac
4301
4302 if test -n "$cross_prefix"; then
4303     test -n "$arch" && test -n "$target_os" ||
4304         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4305     enable cross_compile
4306 fi
4307
4308 set_default target_os
4309 if test "$target_os" = android; then
4310     cc_default="clang"
4311 fi
4312
4313 ar_default="${cross_prefix}${ar_default}"
4314 cc_default="${cross_prefix}${cc_default}"
4315 cxx_default="${cross_prefix}${cxx_default}"
4316 nm_default="${cross_prefix}${nm_default}"
4317 pkg_config_default="${cross_prefix}${pkg_config_default}"
4318 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4319     ranlib_default="${cross_prefix}${ranlib_default} -D"
4320 else
4321     ranlib_default="${cross_prefix}${ranlib_default}"
4322 fi
4323 strip_default="${cross_prefix}${strip_default}"
4324 windres_default="${cross_prefix}${windres_default}"
4325
4326 sysinclude_default="${sysroot}/usr/include"
4327
4328 if enabled cuda_sdk; then
4329     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4330     enable cuda_nvcc
4331 fi
4332
4333 if enabled cuda_nvcc; then
4334     nvcc_default="nvcc"
4335     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4336 else
4337     nvcc_default="clang"
4338     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4339     NVCC_C=""
4340 fi
4341
4342 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4343     target_exec x86asmexe nvcc
4344 enabled cross_compile || host_cc_default=$cc
4345 set_default host_cc
4346
4347 pkg_config_fail_message=""
4348 if ! $pkg_config --version >/dev/null 2>&1; then
4349     warn "$pkg_config not found, library detection may fail."
4350     pkg_config=false
4351 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4352     pkg_config_fail_message="
4353 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4354 fi
4355
4356 if test $doxygen != $doxygen_default && \
4357   ! $doxygen --version >/dev/null 2>&1; then
4358     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4359 fi
4360
4361 exesuf() {
4362     case $1 in
4363         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4364     esac
4365 }
4366
4367 EXESUF=$(exesuf $target_os)
4368 HOSTEXESUF=$(exesuf $host_os)
4369
4370 # set temporary file name
4371 : ${TMPDIR:=$TEMPDIR}
4372 : ${TMPDIR:=$TMP}
4373 : ${TMPDIR:=/tmp}
4374
4375 if [ -n "$tempprefix" ] ; then
4376     mktemp(){
4377         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4378         echo "$tmpname"
4379         mkdir "$tmpname"
4380     }
4381 elif ! test_cmd mktemp -u XXXXXX; then
4382     # simple replacement for missing mktemp
4383     # NOT SAFE FOR GENERAL USE
4384     mktemp(){
4385         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4386         echo "$tmpname"
4387         mkdir "$tmpname"
4388     }
4389 fi
4390
4391 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4392     die "Unable to create temporary directory in $TMPDIR."
4393
4394 tmpfile(){
4395     tmp="${FFTMPDIR}/test"$2
4396     (set -C; exec > $tmp) 2> /dev/null ||
4397         die "Unable to create temporary file in $FFTMPDIR."
4398     eval $1=$tmp
4399 }
4400
4401 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4402 trap 'exit 2' INT
4403
4404 tmpfile TMPASM .asm
4405 tmpfile TMPC   .c
4406 tmpfile TMPCPP .cpp
4407 tmpfile TMPE   $EXESUF
4408 tmpfile TMPH   .h
4409 tmpfile TMPM   .m
4410 tmpfile TMPCU  .cu
4411 tmpfile TMPO   .o
4412 tmpfile TMPS   .S
4413 tmpfile TMPSH  .sh
4414 tmpfile TMPV   .ver
4415
4416 unset -f mktemp
4417
4418 chmod +x $TMPE
4419
4420 # make sure we can execute files in $TMPDIR
4421 cat > $TMPSH 2>> $logfile <<EOF
4422 #! /bin/sh
4423 EOF
4424 chmod +x $TMPSH >> $logfile 2>&1
4425 if ! $TMPSH >> $logfile 2>&1; then
4426     cat <<EOF
4427 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4428 variable to another directory and make sure that it is not mounted noexec.
4429 EOF
4430     die "Sanity test failed."
4431 fi
4432
4433 armasm_flags(){
4434     for flag; do
4435         case $flag in
4436             # Filter out MSVC cl.exe options from cflags that shouldn't
4437             # be passed to gas-preprocessor
4438             -M[TD]*)                                            ;;
4439             *)                  echo $flag                      ;;
4440         esac
4441    done
4442 }
4443
4444 cparser_flags(){
4445     for flag; do
4446         case $flag in
4447             -Wno-switch)             echo -Wno-switch-enum ;;
4448             -Wno-format-zero-length) ;;
4449             -Wdisabled-optimization) ;;
4450             -Wno-pointer-sign)       echo -Wno-other ;;
4451             *)                       echo $flag ;;
4452         esac
4453     done
4454 }
4455
4456 msvc_common_flags(){
4457     for flag; do
4458         case $flag in
4459             # In addition to specifying certain flags under the compiler
4460             # specific filters, they must be specified here as well or else the
4461             # generic catch all at the bottom will print the original flag.
4462             -Wall)                ;;
4463             -Wextra)              ;;
4464             -std=c*)              ;;
4465             # Common flags
4466             -fomit-frame-pointer) ;;
4467             -g)                   echo -Z7 ;;
4468             -fno-math-errno)      ;;
4469             -fno-common)          ;;
4470             -fno-signed-zeros)    ;;
4471             -fPIC)                ;;
4472             -mthumb)              ;;
4473             -march=*)             ;;
4474             -lz)                  echo zlib.lib ;;
4475             -lx264)               echo libx264.lib ;;
4476             -lstdc++)             ;;
4477             -l*)                  echo ${flag#-l}.lib ;;
4478             -LARGEADDRESSAWARE)   echo $flag ;;
4479             -L*)                  echo -libpath:${flag#-L} ;;
4480             -Wl,*)                ;;
4481             *)                    echo $flag ;;
4482         esac
4483     done
4484 }
4485
4486 msvc_flags(){
4487     msvc_common_flags "$@"
4488     for flag; do
4489         case $flag in
4490             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4491                                        -wd4554 ;;
4492             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4493                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4494                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4495                                        -wd4307 \
4496                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4497         esac
4498     done
4499 }
4500
4501 icl_flags(){
4502     msvc_common_flags "$@"
4503     for flag; do
4504         case $flag in
4505             # Despite what Intel's documentation says -Wall, which is supported
4506             # on Windows, does enable remarks so disable them here.
4507             -Wall)                echo $flag -Qdiag-disable:remark ;;
4508             -std=c99)             echo -Qstd=c99 ;;
4509             -flto)                echo -ipo ;;
4510         esac
4511     done
4512 }
4513
4514 icc_flags(){
4515     for flag; do
4516         case $flag in
4517             -flto)                echo -ipo ;;
4518             *)                    echo $flag ;;
4519         esac
4520     done
4521 }
4522
4523 suncc_flags(){
4524     for flag; do
4525         case $flag in
4526             -march=*|-mcpu=*)
4527                 case "${flag#*=}" in
4528                     native)                   echo -xtarget=native       ;;
4529                     v9|niagara)               echo -xarch=sparc          ;;
4530                     ultrasparc)               echo -xarch=sparcvis       ;;
4531                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4532                     i586|pentium)             echo -xchip=pentium        ;;
4533                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4534                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4535                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4536                     pentium4*)          echo -xtarget=pentium4           ;;
4537                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4538                     *-sse3)             echo -xarch=sse3                 ;;
4539                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4540                     bonnell)                   echo -xarch=ssse3         ;;
4541                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4542                     westmere)                  echo -xtarget=westmere    ;;
4543                     silvermont)                echo -xarch=sse4_2        ;;
4544                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4545                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4546                                                echo -xarch=avx           ;;
4547                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4548                     btver1)                    echo -xarch=amdsse4a      ;;
4549                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4550                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4551                     k8|opteron|athlon64|athlon-fx)
4552                                                echo -xarch=sse2a         ;;
4553                     athlon*)                   echo -xarch=pentium_proa  ;;
4554                 esac
4555                 ;;
4556             -std=c99)             echo -xc99              ;;
4557             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4558             -fPIC)                echo -KPIC -xcode=pic32 ;;
4559             -W*,*)                echo $flag              ;;
4560             -f*-*|-W*|-mimpure-text)                      ;;
4561             -shared)              echo -G                 ;;
4562             *)                    echo $flag              ;;
4563         esac
4564     done
4565 }
4566
4567 probe_cc(){
4568     pfx=$1
4569     _cc=$2
4570     first=$3
4571
4572     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4573     unset _ld_o _ldflags _ld_lib _ld_path
4574     unset _depflags _DEPCMD _DEPFLAGS
4575     _flags_filter=echo
4576
4577     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4578         true # no-op to avoid reading stdin in following checks
4579     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4580         _type=llvm_gcc
4581         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4582         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4583         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4584         _cflags_speed='-O3'
4585         _cflags_size='-Os'
4586     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4587         _type=gcc
4588         gcc_version=$($_cc --version | head -n1)
4589         gcc_basever=$($_cc -dumpversion)
4590         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4591         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4592         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4593         case $gcc_basever in
4594             2) ;;
4595             2.*) ;;
4596             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4597         esac
4598         if [ "$first" = true ]; then
4599             case $gcc_basever in
4600                 4.2*)
4601                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4602             esac
4603         fi
4604         _cflags_speed='-O3'
4605         _cflags_size='-Os'
4606     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4607         _type=icc
4608         _ident=$($_cc --version | head -n1)
4609         _depflags='-MMD'
4610         _cflags_speed='-O3'
4611         _cflags_size='-Os'
4612         _cflags_noopt='-O1'
4613         _flags_filter=icc_flags
4614     elif $_cc -v 2>&1 | grep -q xlc; then
4615         _type=xlc
4616         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4617         _cflags_speed='-O5'
4618         _cflags_size='-O5 -qcompact'
4619     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4620         test -d "$sysroot" || die "No valid sysroot specified."
4621         _type=armcc
4622         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4623         armcc_conf="$PWD/armcc.conf"
4624         $_cc --arm_linux_configure                 \
4625              --arm_linux_config_file="$armcc_conf" \
4626              --configure_sysroot="$sysroot"        \
4627              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4628              die "Error creating armcc configuration file."
4629         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4630         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4631         as_default="${cross_prefix}gcc"
4632         _depflags='-MMD'
4633         _cflags_speed='-O3'
4634         _cflags_size='-Os'
4635     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4636         _type=clang
4637         _ident=$($_cc --version 2>/dev/null | head -n1)
4638         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4639         _cflags_speed='-O3'
4640         _cflags_size='-Oz'
4641     elif $_cc -V 2>&1 | grep -q Sun; then
4642         _type=suncc
4643         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4644         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4645         _DEPFLAGS='-xM1 -xc99'
4646         _ldflags='-std=c99'
4647         _cflags_speed='-O5'
4648         _cflags_size='-O5 -xspace'
4649         _flags_filter=suncc_flags
4650     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4651         _type=pathscale
4652         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4653         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4654         _cflags_speed='-O2'
4655         _cflags_size='-Os'
4656         _flags_filter='filter_out -Wdisabled-optimization'
4657     elif $_cc -v 2>&1 | grep -q Open64; then
4658         _type=open64
4659         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4660         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4661         _cflags_speed='-O2'
4662         _cflags_size='-Os'
4663         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4664     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4665         _type=armasm
4666         _ident=$($_cc | head -n1)
4667         # 4509: "This form of conditional instruction is deprecated"
4668         _flags="-nologo -ignore 4509"
4669         _flags_filter=armasm_flags
4670     elif $_cc 2>&1 | grep -q Intel; then
4671         _type=icl
4672         _ident=$($_cc 2>&1 | head -n1)
4673         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4674         # Not only is O3 broken on 13.x+ but it is slower on all previous
4675         # versions (tested) as well.
4676         _cflags_speed="-O2"
4677         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4678         if $_cc 2>&1 | grep -q Linker; then
4679             _ld_o='-out:$@'
4680         else
4681             _ld_o='-Fe$@'
4682         fi
4683         _cc_o='-Fo$@'
4684         _cc_e='-P'
4685         _flags_filter=icl_flags
4686         _ld_lib='lib%.a'
4687         _ld_path='-libpath:'
4688         # -Qdiag-error to make icl error when seeing certain unknown arguments
4689         _flags='-nologo -Qdiag-error:4044,10157'
4690         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4691         # with MSVC which enables it by default.
4692         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4693         disable stripping
4694     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4695         # lld can emulate multiple different linkers; in ms link.exe mode,
4696         # the -? parameter gives the help output which contains an identifyable
4697         # string, while it gives an error in other modes.
4698         _type=lld-link
4699         # The link.exe mode doesn't have a switch for getting the version,
4700         # but we can force it back to gnu mode and get the version from there.
4701         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4702         _ld_o='-out:$@'
4703         _flags_filter=msvc_flags
4704         _ld_lib='lib%.a'
4705         _ld_path='-libpath:'
4706     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4707         _type=msvc
4708         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4709             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4710         else
4711             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4712         fi
4713         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4714         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4715         _cflags_speed="-O2"
4716         _cflags_size="-O1"
4717         _cflags_noopt="-O1"
4718         if $_cc -nologo- 2>&1 | grep -q Linker; then
4719             _ld_o='-out:$@'
4720         else
4721             _ld_o='-Fe$@'
4722         fi
4723         _cc_o='-Fo$@'
4724         _cc_e='-P -Fi$@'
4725         _flags_filter=msvc_flags
4726         _ld_lib='lib%.a'
4727         _ld_path='-libpath:'
4728         _flags='-nologo'
4729         disable stripping
4730     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4731         _type=cparser
4732         _ident=$($_cc --version | head -n1)
4733         _depflags='-MMD'
4734         _cflags_speed='-O4'
4735         _cflags_size='-O2'
4736         _flags_filter=cparser_flags
4737     fi
4738
4739     eval ${pfx}_type=\$_type
4740     eval ${pfx}_ident=\$_ident
4741 }
4742
4743 set_ccvars(){
4744     eval ${1}_C=\${_cc_c-\${${1}_C}}
4745     eval ${1}_E=\${_cc_e-\${${1}_E}}
4746     eval ${1}_O=\${_cc_o-\${${1}_O}}
4747
4748     if [ -n "$_depflags" ]; then
4749         eval ${1}_DEPFLAGS=\$_depflags
4750     else
4751         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4752         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4753         eval DEP${1}FLAGS=\$_flags
4754     fi
4755 }
4756
4757 probe_cc cc "$cc" "true"
4758 cflags_filter=$_flags_filter
4759 cflags_speed=$_cflags_speed
4760 cflags_size=$_cflags_size
4761 cflags_noopt=$_cflags_noopt
4762 add_cflags $_flags $_cflags
4763 cc_ldflags=$_ldflags
4764 set_ccvars CC
4765 set_ccvars CXX
4766
4767 probe_cc hostcc "$host_cc"
4768 host_cflags_filter=$_flags_filter
4769 host_cflags_speed=$_cflags_speed
4770 add_host_cflags  $_flags $_cflags
4771 set_ccvars HOSTCC
4772
4773 test -n "$cc_type" && enable $cc_type ||
4774     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4775
4776 : ${as_default:=$cc}
4777 : ${objcc_default:=$cc}
4778 : ${dep_cc_default:=$cc}
4779 : ${ld_default:=$cc}
4780 : ${host_ld_default:=$host_cc}
4781 set_default ar as objcc dep_cc ld ln_s host_ld windres
4782
4783 probe_cc as "$as"
4784 asflags_filter=$_flags_filter
4785 add_asflags $_flags $_cflags
4786 set_ccvars AS
4787
4788 probe_cc objcc "$objcc"
4789 objcflags_filter=$_flags_filter
4790 add_objcflags $_flags $_cflags
4791 set_ccvars OBJC
4792
4793 probe_cc ld "$ld"
4794 ldflags_filter=$_flags_filter
4795 add_ldflags $_flags $_ldflags
4796 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4797 LD_O=${_ld_o-$LD_O}
4798 LD_LIB=${_ld_lib-$LD_LIB}
4799 LD_PATH=${_ld_path-$LD_PATH}
4800
4801 probe_cc hostld "$host_ld"
4802 host_ldflags_filter=$_flags_filter
4803 add_host_ldflags $_flags $_ldflags
4804 HOSTLD_O=${_ld_o-$HOSTLD_O}
4805
4806 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4807     probe_cc depcc "$dep_cc"
4808     CCDEP=${_DEPCMD:-$DEPCMD}
4809     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4810     DEPCCFLAGS=$_flags
4811 fi
4812
4813 if $ar 2>&1 | grep -q Microsoft; then
4814     arflags="-nologo"
4815     ar_o='-out:$@'
4816 elif $ar 2>&1 | grep -q "\[D\] "; then
4817     arflags="rcD"
4818     ar_o='$@'
4819 else
4820     arflags="rc"
4821     ar_o='$@'
4822 fi
4823
4824 add_cflags $extra_cflags
4825 add_cxxflags $extra_cxxflags
4826 add_objcflags $extra_objcflags
4827 add_asflags $extra_cflags
4828
4829 if test -n "$sysroot"; then
4830     case "$cc_type" in
4831         gcc|llvm_gcc|clang)
4832             add_cppflags --sysroot="$sysroot"
4833             add_ldflags --sysroot="$sysroot"
4834         ;;
4835     esac
4836 fi
4837
4838 if test "$cpu" = host; then
4839     enabled cross_compile &&
4840         warn "--cpu=host makes no sense when cross-compiling."
4841
4842     case "$cc_type" in
4843         gcc|llvm_gcc)
4844             check_native(){
4845                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4846                 sed -n "/cc1.*$1=/{
4847                             s/.*$1=\\([^ ]*\\).*/\\1/
4848                             p
4849                             q
4850                         }" $TMPE
4851             }
4852             cpu=$(check_native -march || check_native -mcpu)
4853         ;;
4854         clang)
4855             check_native(){
4856                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4857                 sed -n "/cc1.*-target-cpu /{
4858                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4859                             p
4860                             q
4861                         }" $TMPE
4862             }
4863             cpu=$(check_native -march)
4864         ;;
4865     esac
4866
4867     test "${cpu:-host}" = host &&
4868         die "--cpu=host not supported with compiler $cc"
4869 fi
4870
4871 # Deal with common $arch aliases
4872 case "$arch" in
4873     aarch64|arm64)
4874         arch="aarch64"
4875     ;;
4876     arm*|iPad*|iPhone*)
4877         arch="arm"
4878     ;;
4879     mips*|IP*)
4880         case "$arch" in
4881         *el)
4882             add_cppflags -EL
4883             add_ldflags -EL
4884         ;;
4885         *eb)
4886             add_cppflags -EB
4887             add_ldflags -EB
4888         ;;
4889         esac
4890         arch="mips"
4891     ;;
4892     parisc*|hppa*)
4893         arch="parisc"
4894     ;;
4895     "Power Macintosh"|ppc*|powerpc*)
4896         arch="ppc"
4897     ;;
4898     s390|s390x)
4899         arch="s390"
4900     ;;
4901     sh4|sh)
4902         arch="sh4"
4903     ;;
4904     sun4*|sparc*)
4905         arch="sparc"
4906     ;;
4907     tilegx|tile-gx)
4908         arch="tilegx"
4909     ;;
4910     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4911         arch="x86"
4912     ;;
4913 esac
4914
4915 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4916 enable $arch
4917
4918 # Add processor-specific flags
4919 if enabled aarch64; then
4920
4921     case $cpu in
4922         armv*)
4923             cpuflags="-march=$cpu"
4924         ;;
4925         *)
4926             cpuflags="-mcpu=$cpu"
4927         ;;
4928     esac
4929
4930 elif enabled alpha; then
4931
4932     cpuflags="-mcpu=$cpu"
4933
4934 elif enabled arm; then
4935
4936     check_arm_arch() {
4937         test_cpp_condition stddef.h \
4938             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4939             $cpuflags
4940     }
4941
4942     probe_arm_arch() {
4943         if   check_arm_arch 4;        then echo armv4
4944         elif check_arm_arch 4T;       then echo armv4t
4945         elif check_arm_arch 5;        then echo armv5
4946         elif check_arm_arch 5E;       then echo armv5e
4947         elif check_arm_arch 5T;       then echo armv5t
4948         elif check_arm_arch 5TE;      then echo armv5te
4949         elif check_arm_arch 5TEJ;     then echo armv5te
4950         elif check_arm_arch 6;        then echo armv6
4951         elif check_arm_arch 6J;       then echo armv6j
4952         elif check_arm_arch 6K;       then echo armv6k
4953         elif check_arm_arch 6Z;       then echo armv6z
4954         elif check_arm_arch 6KZ;      then echo armv6zk
4955         elif check_arm_arch 6ZK;      then echo armv6zk
4956         elif check_arm_arch 6T2;      then echo armv6t2
4957         elif check_arm_arch 7;        then echo armv7
4958         elif check_arm_arch 7A  7_A;  then echo armv7-a
4959         elif check_arm_arch 7S;       then echo armv7-a
4960         elif check_arm_arch 7R  7_R;  then echo armv7-r
4961         elif check_arm_arch 7M  7_M;  then echo armv7-m
4962         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4963         elif check_arm_arch 8A  8_A;  then echo armv8-a
4964         fi
4965     }
4966
4967     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4968
4969     case $cpu in
4970         armv*)
4971             cpuflags="-march=$cpu"
4972             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4973         ;;
4974         *)
4975             cpuflags="-mcpu=$cpu"
4976             case $cpu in
4977                 cortex-a*)                               subarch=armv7a  ;;
4978                 cortex-r*)                               subarch=armv7r  ;;
4979                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4980                 arm11*)                                  subarch=armv6   ;;
4981                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4982                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4983                 *)                             subarch=$(probe_arm_arch) ;;
4984             esac
4985         ;;
4986     esac
4987
4988     case "$subarch" in
4989         armv5t*)    enable fast_clz                ;;
4990         armv[6-8]*)
4991             enable fast_clz
4992             disabled fast_unaligned || enable fast_unaligned
4993             ;;
4994     esac
4995
4996 elif enabled avr32; then
4997
4998     case $cpu in
4999         ap7[02]0[0-2])
5000             subarch="avr32_ap"
5001             cpuflags="-mpart=$cpu"
5002         ;;
5003         ap)
5004             subarch="avr32_ap"
5005             cpuflags="-march=$cpu"
5006         ;;
5007         uc3[ab]*)
5008             subarch="avr32_uc"
5009             cpuflags="-mcpu=$cpu"
5010         ;;
5011         uc)
5012             subarch="avr32_uc"
5013             cpuflags="-march=$cpu"
5014         ;;
5015     esac
5016
5017 elif enabled bfin; then
5018
5019     cpuflags="-mcpu=$cpu"
5020
5021 elif enabled mips; then
5022
5023     if [ "$cpu" != "generic" ]; then
5024         disable mips32r2
5025         disable mips32r5
5026         disable mips64r2
5027         disable mips32r6
5028         disable mips64r6
5029         disable loongson2
5030         disable loongson3
5031         disable mipsdsp
5032         disable mipsdspr2
5033
5034         cpuflags="-march=$cpu"
5035
5036         case $cpu in
5037             # General ISA levels
5038             mips1|mips3)
5039             ;;
5040             mips32r2)
5041                 enable mips32r2
5042             ;;
5043             mips32r5)
5044                 enable mips32r2
5045                 enable mips32r5
5046             ;;
5047             mips64r2|mips64r5)
5048                 enable mips64r2
5049                 enable loongson3
5050             ;;
5051             # Cores from MIPS(MTI)
5052             24kc)
5053                 disable mipsfpu
5054                 enable mips32r2
5055             ;;
5056             24kf*|24kec|34kc|74Kc|1004kc)
5057                 enable mips32r2
5058             ;;
5059             24kef*|34kf*|1004kf*)
5060                 enable mipsdsp
5061                 enable mips32r2
5062             ;;
5063             p5600)
5064                 enable mips32r2
5065                 enable mips32r5
5066                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5067             ;;
5068             i6400)
5069                 enable mips64r6
5070                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5071             ;;
5072             p6600)
5073                 enable mips64r6
5074                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5075             ;;
5076             # Cores from Loongson
5077             loongson2e|loongson2f|loongson3*)
5078                 enable local_aligned
5079                 enable simd_align_16
5080                 enable fast_64bit
5081                 enable fast_clz
5082                 enable fast_cmov
5083                 enable fast_unaligned
5084                 disable aligned_stack
5085                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5086                 if test "$cc_type" = "gcc"; then
5087                     case $gcc_basever in
5088                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5089                         expensive_optimization_flag="-fno-expensive-optimizations"
5090                         ;;
5091                         *)
5092                         expensive_optimization_flag=""
5093                         ;;
5094                     esac
5095                 fi
5096
5097                 case $cpu in
5098                     loongson3*)
5099                         enable loongson3
5100                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5101                     ;;
5102                     loongson2e)
5103                         enable loongson2
5104                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5105                     ;;
5106                     loongson2f)
5107                         enable loongson2
5108                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5109                     ;;
5110                 esac
5111             ;;
5112             *)
5113                 warn "unknown MIPS CPU"
5114             ;;
5115         esac
5116
5117     else
5118         disable mipsdsp
5119         disable mipsdspr2
5120         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5121         warn 'generic cpu selected'
5122     fi
5123
5124 elif enabled ppc; then
5125
5126     disable ldbrx
5127
5128     case $(tolower $cpu) in
5129         601|ppc601|powerpc601)
5130             cpuflags="-mcpu=601"
5131             disable altivec
5132         ;;
5133         603*|ppc603*|powerpc603*)
5134             cpuflags="-mcpu=603"
5135             disable altivec
5136         ;;
5137         604*|ppc604*|powerpc604*)
5138             cpuflags="-mcpu=604"
5139             disable altivec
5140         ;;
5141         g3|75*|ppc75*|powerpc75*)
5142             cpuflags="-mcpu=750"
5143             disable altivec
5144         ;;
5145         g4|745*|ppc745*|powerpc745*)
5146             cpuflags="-mcpu=7450"
5147             disable vsx
5148         ;;
5149         74*|ppc74*|powerpc74*)
5150             cpuflags="-mcpu=7400"
5151             disable vsx
5152         ;;
5153         g5|970|ppc970|powerpc970)
5154             cpuflags="-mcpu=970"
5155             disable vsx
5156         ;;
5157         power[3-6]*)
5158             cpuflags="-mcpu=$cpu"
5159             disable vsx
5160         ;;
5161         power[7-8]*)
5162             cpuflags="-mcpu=$cpu"
5163         ;;
5164         cell)
5165             cpuflags="-mcpu=cell"
5166             enable ldbrx
5167             disable vsx
5168         ;;
5169         e500mc)
5170             cpuflags="-mcpu=e500mc"
5171             disable altivec
5172         ;;
5173         e500v2)
5174             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5175             disable altivec
5176             disable dcbzl
5177         ;;
5178         e500)
5179             cpuflags="-mcpu=8540 -mhard-float"
5180             disable altivec
5181             disable dcbzl
5182         ;;
5183     esac
5184
5185 elif enabled sparc; then
5186
5187     case $cpu in
5188         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5189             cpuflags="-mcpu=$cpu"
5190         ;;
5191         ultrasparc*|niagara[234])
5192             cpuflags="-mcpu=$cpu"
5193         ;;
5194     esac
5195
5196 elif enabled x86; then
5197
5198     case $cpu in
5199         i[345]86|pentium)
5200             cpuflags="-march=$cpu"
5201             disable i686
5202             disable mmx
5203         ;;
5204         # targets that do NOT support nopl and conditional mov (cmov)
5205         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5206             cpuflags="-march=$cpu"
5207             disable i686
5208         ;;
5209         # targets that do support nopl and conditional mov (cmov)
5210         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5211         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5212         |amdfam10|barcelona|b[dt]ver*|znver*)
5213             cpuflags="-march=$cpu"
5214             enable i686
5215             enable fast_cmov
5216         ;;
5217         # targets that do support conditional mov but on which it's slow
5218         pentium4|pentium4m|prescott|nocona)
5219             cpuflags="-march=$cpu"
5220             enable i686
5221             disable fast_cmov
5222         ;;
5223     esac
5224
5225 fi
5226
5227 if [ "$cpu" != generic ]; then
5228     add_cflags  $cpuflags
5229     add_asflags $cpuflags
5230     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5231 fi
5232
5233 # compiler sanity check
5234 test_exec <<EOF
5235 int main(void){ return 0; }
5236 EOF
5237 if test "$?" != 0; then
5238     echo "$cc is unable to create an executable file."
5239     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5240         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5241         echo "Only do this if you know what cross compiling means."
5242     fi
5243     die "C compiler test failed."
5244 fi
5245
5246 add_cppflags -D_ISOC99_SOURCE
5247 add_cxxflags -D__STDC_CONSTANT_MACROS
5248 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5249
5250 # some compilers silently accept -std=c11, so we also need to check that the
5251 # version macro is defined properly
5252 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5253     add_cflags -std=c11 ||
5254     check_cflags -std=c99
5255
5256 check_cppflags -D_FILE_OFFSET_BITS=64
5257 check_cppflags -D_LARGEFILE_SOURCE
5258
5259 add_host_cppflags -D_ISOC99_SOURCE
5260 check_host_cflags -std=c99
5261 check_host_cflags -Wall
5262 check_host_cflags $host_cflags_speed
5263
5264 check_64bit(){
5265     arch32=$1
5266     arch64=$2
5267     expr=${3:-'sizeof(void *) > 4'}
5268     test_code cc "" "int test[2*($expr) - 1]" &&
5269         subarch=$arch64 || subarch=$arch32
5270     enable $subarch
5271 }
5272
5273 case "$arch" in
5274     aarch64|alpha|ia64)
5275         enabled shared && enable_weak pic
5276     ;;
5277     mips)
5278         check_64bit mips mips64 '_MIPS_SIM > 1'
5279         enabled shared && enable_weak pic
5280     ;;
5281     parisc)
5282         check_64bit parisc parisc64
5283         enabled shared && enable_weak pic
5284     ;;
5285     ppc)
5286         check_64bit ppc ppc64
5287         enabled shared && enable_weak pic
5288     ;;
5289     s390)
5290         check_64bit s390 s390x
5291         enabled shared && enable_weak pic
5292     ;;
5293     sparc)
5294         check_64bit sparc sparc64
5295         enabled shared && enable_weak pic
5296     ;;
5297     x86)
5298         check_64bit x86_32 x86_64
5299         # Treat x32 as x64 for now. Note it also needs pic if shared
5300         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5301             subarch=x86_64 && enable x86_64 && disable x86_32
5302         if enabled x86_64; then
5303             enabled shared && enable_weak pic
5304             objformat=elf64
5305         fi
5306     ;;
5307 esac
5308
5309 # OS specific
5310 case $target_os in
5311     aix)
5312         SHFLAGS=-shared
5313         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5314         enabled shared && add_ldflags -Wl,-brtl
5315         arflags='-Xany -r -c'
5316         striptype=""
5317         ;;
5318     android)
5319         disable symver
5320         enable section_data_rel_ro
5321         add_cflags -fPIE
5322         add_ldexeflags -fPIE -pie
5323         SLIB_INSTALL_NAME='$(SLIBNAME)'
5324         SLIB_INSTALL_LINKS=
5325         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5326         ;;
5327     haiku)
5328         prefix_default="/boot/common"
5329         network_extralibs="-lnetwork"
5330         host_extralibs=
5331         ;;
5332     sunos)
5333         SHFLAGS='-shared -Wl,-h,$$(@F)'
5334         enabled x86 && append SHFLAGS -mimpure-text
5335         network_extralibs="-lsocket -lnsl"
5336         add_cppflags -D__EXTENSIONS__
5337         # When using suncc to build, the Solaris linker will mark
5338         # an executable with each instruction set encountered by
5339         # the Solaris assembler.  As our libraries contain their own
5340         # guards for processor-specific code, instead suppress
5341         # generation of the HWCAPS ELF section on Solaris x86 only.
5342         enabled_all suncc x86 &&
5343             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5344             add_ldflags -Wl,-M,mapfile
5345         nm_default='nm -P -g'
5346         striptype=""
5347         version_script='-M'
5348         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5349         ;;
5350     netbsd)
5351         disable symver
5352         oss_indev_extralibs="-lossaudio"
5353         oss_outdev_extralibs="-lossaudio"
5354         enabled gcc || check_ldflags -Wl,-zmuldefs
5355         ;;
5356     openbsd|bitrig)
5357         disable symver
5358         enable section_data_rel_ro
5359         striptype=""
5360         SHFLAGS='-shared'
5361         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5362         SLIB_INSTALL_LINKS=
5363         oss_indev_extralibs="-lossaudio"
5364         oss_outdev_extralibs="-lossaudio"
5365         ;;
5366     dragonfly)
5367         disable symver
5368         ;;
5369     freebsd)
5370         ;;
5371     bsd/os)
5372         add_extralibs -lpoll -lgnugetopt
5373         strip="strip -d"
5374         ;;
5375     darwin)
5376         enabled ppc && add_asflags -force_cpusubtype_ALL
5377         install_name_dir_default='$(SHLIBDIR)'
5378         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5379         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5380         strip="${strip} -x"
5381         add_ldflags -Wl,-dynamic,-search_paths_first
5382         check_cflags -Werror=partial-availability
5383         SLIBSUF=".dylib"
5384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5386         enabled x86_64 && objformat="macho64" || objformat="macho32"
5387         enabled_any pic shared x86_64 ||
5388             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5389         check_headers dispatch/dispatch.h &&
5390             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5391         if test -n "$sysroot"; then
5392             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5393             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5394         fi
5395         version_script='-exported_symbols_list'
5396         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5397         # Workaround for Xcode 11 -fstack-check bug
5398         if enabled clang; then
5399             clang_version=$($cc -dumpversion)
5400             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5401         fi
5402         ;;
5403     msys*)
5404         die "Native MSYS builds are discouraged, please use the MINGW environment."
5405         ;;
5406     mingw32*|mingw64*)
5407         target_os=mingw32
5408         LIBTARGET=i386
5409         if enabled x86_64; then
5410             LIBTARGET="i386:x86-64"
5411         elif enabled arm; then
5412             LIBTARGET="arm"
5413         elif enabled aarch64; then
5414             LIBTARGET="arm64"
5415         fi
5416         if enabled shared; then
5417             # Cannot build both shared and static libs when using dllimport.
5418             disable static
5419         fi
5420         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5421         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5422         shlibdir_default="$bindir_default"
5423         SLIBPREF=""
5424         SLIBSUF=".dll"
5425         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5426         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5427         if test_cmd lib.exe -list; then
5428             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5429             if enabled x86_64; then
5430                 LIBTARGET=x64
5431             fi
5432         else
5433             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5434         fi
5435         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5436         SLIB_INSTALL_LINKS=
5437         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5438         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5439         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5440         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5441         enabled x86_64 && objformat="win64" || objformat="win32"
5442         dlltool="${cross_prefix}dlltool"
5443         ranlib=:
5444         enable dos_paths
5445         check_ldflags -Wl,--nxcompat,--dynamicbase
5446         # Lets work around some stupidity in binutils.
5447         # ld will strip relocations from executables even though we need them
5448         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5449         # however ld then forgets what the entry point should be (oops) so we
5450         # have to manually (re)set it.
5451         if enabled x86_32; then
5452             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5453         elif enabled x86_64; then
5454             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5455             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5456             # Set image base >4GB for extra entropy with HEASLR
5457             add_ldexeflags -Wl,--image-base,0x140000000
5458             append SHFLAGS -Wl,--image-base,0x180000000
5459         fi
5460         ;;
5461     win32|win64)
5462         disable symver
5463         if enabled shared; then
5464             # Link to the import library instead of the normal static library
5465             # for shared libs.
5466             LD_LIB='%.lib'
5467             # Cannot build both shared and static libs with MSVC or icl.
5468             disable static
5469         fi
5470         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5471         shlibdir_default="$bindir_default"
5472         SLIBPREF=""
5473         SLIBSUF=".dll"
5474         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5475         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5476         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5477         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5478         SLIB_INSTALL_LINKS=
5479         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5480         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5481         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5482         enabled x86_64 && objformat="win64" || objformat="win32"
5483         ranlib=:
5484         enable dos_paths
5485         ;;
5486     cygwin*)
5487         target_os=cygwin
5488         shlibdir_default="$bindir_default"
5489         SLIBPREF="cyg"
5490         SLIBSUF=".dll"
5491         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5492         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5493         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5494         SLIB_INSTALL_LINKS=
5495         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5496         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5497         enabled x86_64 && objformat="win64" || objformat="win32"
5498         enable dos_paths
5499         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5500         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5501         ;;
5502     *-dos|freedos|opendos)
5503         network_extralibs="-lsocket"
5504         objformat="coff"
5505         enable dos_paths
5506         ;;
5507     linux)
5508         enable section_data_rel_ro
5509         enabled_any arm aarch64 && enable_weak linux_perf
5510         ;;
5511     irix*)
5512         target_os=irix
5513         ranlib="echo ignoring ranlib"
5514         ;;
5515     os/2*)
5516         strip="lxlite -CS"
5517         striptype=""
5518         objformat="aout"
5519         add_cppflags -D_GNU_SOURCE
5520         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5521         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5522         LIBSUF="_s.a"
5523         SLIBPREF=""
5524         SLIBSUF=".dll"
5525         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5526         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5527         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5528             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5529             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5530             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5531             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5532         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5533             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5534         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5535         SLIB_INSTALL_LINKS=
5536         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5537         enable dos_paths
5538         enable_weak os2threads
5539         ;;
5540     gnu/kfreebsd)
5541         add_cppflags -D_BSD_SOURCE
5542         ;;
5543     gnu)
5544         ;;
5545     qnx)
5546         add_cppflags -D_QNX_SOURCE
5547         network_extralibs="-lsocket"
5548         ;;
5549     symbian)
5550         SLIBSUF=".dll"
5551         enable dos_paths
5552         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5553         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5554         add_ldflags -Wl,--target1-abs,--no-undefined \
5555                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5556                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5557         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5558                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5559                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5560         ;;
5561     minix)
5562         ;;
5563     none)
5564         ;;
5565     *)
5566         die "Unknown OS '$target_os'."
5567         ;;
5568 esac
5569
5570 # test if creating links works
5571 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5572 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5573 mkdir "$link_dest"
5574 $ln_s "$link_dest" "$link_name"
5575 touch "$link_dest/test_file"
5576 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5577     # create link to source path
5578     [ -e src ] && rm src
5579     $ln_s "$source_path" src
5580     source_link=src
5581 else
5582     # creating directory links doesn't work
5583     # fall back to using the full source path
5584     source_link="$source_path"
5585 fi
5586 # cleanup
5587 rm -r "$link_dest"
5588 rm -r "$link_name"
5589
5590 # determine libc flavour
5591
5592 probe_libc(){
5593     pfx=$1
5594     pfx_no_=${pfx%_}
5595     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5596     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5597         eval ${pfx}libc_type=uclibc
5598         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5599     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5600         eval ${pfx}libc_type=glibc
5601         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5602     # MinGW headers can be installed on Cygwin, so check for newlib first.
5603     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5604         eval ${pfx}libc_type=newlib
5605         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5606     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5607     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5608         eval ${pfx}libc_type=mingw64
5609         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5610             add_compat msvcrt/snprintf.o
5611             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5612         fi
5613         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5614         eval test \$${pfx_no_}cc_type = "gcc" &&
5615             add_${pfx}cppflags -D__printf__=__gnu_printf__
5616         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5617             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5618         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5619     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5620          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5621         eval ${pfx}libc_type=mingw32
5622         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5623             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5624             die "ERROR: MinGW32 runtime version must be >= 3.15."
5625         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5626         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5627             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5628         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5629             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5630         eval test \$${pfx_no_}cc_type = "gcc" &&
5631             add_${pfx}cppflags -D__printf__=__gnu_printf__
5632         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5633     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5634         eval ${pfx}libc_type=msvcrt
5635         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5636             if [ "$pfx" = host_ ]; then
5637                 add_host_cppflags -Dsnprintf=_snprintf
5638             else
5639                 add_compat strtod.o strtod=avpriv_strtod
5640                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5641                                              _snprintf=avpriv_snprintf  \
5642                                              vsnprintf=avpriv_vsnprintf
5643             fi
5644         fi
5645         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5646         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5647         # 0x601 by default unless something else is set by the user.
5648         # This can easily lead to us detecting functions only present
5649         # in such new versions and producing binaries requiring windows 7.0.
5650         # Therefore explicitly set the default to Vista unless the user has
5651         # set something else on the command line.
5652         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5653         # family. For these cases, configure is free to use any functions
5654         # found in the SDK headers by default. (Alternatively, we could force
5655         # _WIN32_WINNT to 0x0602 in that case.)
5656         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5657             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5658 #ifdef WINAPI_FAMILY
5659 #include <winapifamily.h>
5660 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5661 #error not desktop
5662 #endif
5663 #endif
5664 EOF
5665         if [ "$pfx" = "" ]; then
5666             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5667             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5668         fi
5669     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5670         eval ${pfx}libc_type=klibc
5671     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5672         eval ${pfx}libc_type=bionic
5673     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5674         eval ${pfx}libc_type=solaris
5675         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5676     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5677         eval ${pfx}libc_type=djgpp
5678         add_cppflags -U__STRICT_ANSI__
5679         add_cflags "-include $source_path/compat/djgpp/math.h"
5680         add_compat djgpp/math.o
5681     fi
5682     test_${pfx}cc <<EOF
5683 #include <time.h>
5684 void *v = localtime_r;
5685 EOF
5686 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5687 #include <time.h>
5688 void *v = localtime_r;
5689 EOF
5690
5691     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5692 }
5693
5694 probe_libc
5695 probe_libc host_
5696
5697 # hacks for compiler/libc/os combinations
5698
5699 case $libc_type in
5700     bionic)
5701         add_compat strtod.o strtod=avpriv_strtod
5702         ;;
5703 esac
5704
5705 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5706     add_cppflags '-I\$(SRC_PATH)/compat/float'
5707
5708 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5709
5710 set_default libdir
5711 : ${shlibdir_default:="$libdir"}
5712 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5713
5714 set_default $PATHS_LIST
5715 set_default nm
5716
5717 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5718
5719 enable_weak_pic() {
5720     disabled pic && return
5721     enable pic
5722     add_cppflags -DPIC
5723     case "$target_os" in
5724     mingw*|cygwin*|win*)
5725         ;;
5726     *)
5727         add_cflags -fPIC
5728         add_asflags -fPIC
5729         ;;
5730     esac
5731 }
5732
5733 enabled pic && enable_weak_pic
5734
5735 test_cc <<EOF || die "Symbol mangling check failed."
5736 int ff_extern;
5737 EOF
5738 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5739 extern_prefix=${sym%%ff_extern*}
5740
5741 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5742
5743 for restrict_keyword in restrict __restrict__ __restrict ""; do
5744     test_code cc "" "char * $restrict_keyword p" && break
5745 done
5746
5747 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5748
5749 # The global variable ensures the bits appear unchanged in the object file.
5750 test_cc <<EOF || die "endian test failed"
5751 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5752 EOF
5753 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5754
5755 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5756
5757 if ! enabled ppc64 || enabled bigendian; then
5758     disable vsx
5759 fi
5760
5761 check_gas() {
5762     log "check_gas using '$as' as AS"
5763     # :vararg is used on aarch64, arm and ppc altivec
5764     check_as vararg "
5765 .macro m n, y:vararg=0
5766 \n: .int \y
5767 .endm
5768 m x" || return 1
5769     # .altmacro is only used in arm asm
5770     ! enabled arm || check_as gnu_as ".altmacro"
5771 }
5772
5773 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5774     nogas=:
5775     enabled_any arm aarch64 && nogas=die
5776     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5777     as_noop=-v
5778
5779     case $as_type in
5780         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5781         gcc)  gaspp_as_type=gas ;;
5782         *)    gaspp_as_type=$as_type ;;
5783     esac
5784
5785     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5786
5787     test "${as#*gas-preprocessor.pl}" != "$as" ||
5788     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5789         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5790
5791     if ! check_gas ; then
5792         as=${gas:=$as}
5793         check_gas || \
5794             $nogas "GNU assembler not found, install/update gas-preprocessor"
5795     fi
5796
5797     check_as as_func ".func test
5798                       .endfunc"
5799 fi
5800
5801 check_inline_asm inline_asm_labels '"1:\n"'
5802
5803 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5804
5805 if enabled aarch64; then
5806     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5807     # internal assembler in clang 3.3 does not support this instruction
5808     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5809     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5810
5811     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5812
5813 elif enabled alpha; then
5814
5815     check_cflags -mieee
5816
5817 elif enabled arm; then
5818
5819     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5820     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5821 float func(float a, float b){ return a+b; }
5822 EOF
5823     enabled thumb && check_cflags -mthumb || check_cflags -marm
5824
5825     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5826         :
5827     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5828         :
5829     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5830         case "${cross_prefix:-$cc}" in
5831             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5832             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5833 __asm__ (".eabi_attribute 28, 1");
5834 int main(void) { return 0; }
5835 EOF
5836         esac
5837         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5838     fi
5839
5840     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5841     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5842     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5843     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5844     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5845     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5846     enabled setend  && check_insn setend  'setend be'
5847
5848     [ $target_os = linux ] || [ $target_os = android ] ||
5849         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5850             $ARCH_EXT_LIST_ARM
5851
5852     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5853
5854     check_as as_arch_directive ".arch armv7-a"
5855     check_as as_dn_directive   "ra .dn d0.i16"
5856     check_as as_fpu_directive  ".fpu neon"
5857
5858     # llvm's integrated assembler supports .object_arch from llvm 3.5
5859     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5860         check_as as_object_arch ".object_arch armv4"
5861
5862     # MS armasm fails to assemble our PIC constructs
5863     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5864
5865 elif enabled mips; then
5866
5867     # Check toolchain ISA level
5868     if enabled mips64; then
5869         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5870             disable mips64r2
5871
5872         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5873
5874         disable mips32r6 && disable mips32r5 && disable mips32r2
5875     else
5876         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5877             disable mips32r5 && disable mips32r2
5878
5879         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5880         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5881
5882         disable mips64r6 && disable mips64r5 && disable mips64r2
5883     fi
5884
5885     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5886     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5887
5888     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5889     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5890
5891     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5892     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5893     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5894
5895     # loongson2 have no switch cflag so we can only probe toolchain ability
5896     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5897
5898     # loongson3 is paired with MMI
5899     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5900
5901     # MMI can be detected at runtime too
5902     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5903
5904     if enabled bigendian && enabled msa; then
5905         disable msa
5906     fi
5907
5908 elif enabled parisc; then
5909
5910     if enabled gcc; then
5911         case $($cc -dumpversion) in
5912             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5913         esac
5914     fi
5915
5916 elif enabled ppc; then
5917
5918     enable local_aligned
5919
5920     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5921     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5922     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5923     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5924
5925     if enabled altivec; then
5926         check_cflags -maltivec -mabi=altivec
5927
5928         # check if our compiler supports Motorola AltiVec C API
5929         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5930                                     vector signed int v2 = (vector signed int) { 1 };
5931                                     v1 = vec_add(v1, v2);"
5932
5933         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5934     fi
5935
5936     if enabled vsx; then
5937         check_cflags -mvsx &&
5938         check_cc vsx altivec.h "int v[4] = { 0 };
5939                                 vector signed int v1 = vec_vsx_ld(0, v);"
5940     fi
5941
5942     if enabled power8; then
5943         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5944     fi
5945
5946 elif enabled x86; then
5947
5948     check_builtin rdtsc    intrin.h   "__rdtsc()"
5949     check_builtin mm_empty mmintrin.h "_mm_empty()"
5950
5951     enable local_aligned
5952
5953     # check whether EBP is available on x86
5954     # As 'i' is stored on the stack, this program will crash
5955     # if the base pointer is used to access it because the
5956     # base pointer is cleared in the inline assembly code.
5957     check_exec_crash <<EOF && enable ebp_available
5958 volatile int i=0;
5959 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5960 return i;
5961 EOF
5962
5963     # check whether EBX is available on x86
5964     check_inline_asm ebx_available '""::"b"(0)' &&
5965         check_inline_asm ebx_available '"":::"%ebx"'
5966
5967     # check whether xmm clobbers are supported
5968     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5969
5970     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5971         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5972
5973     # check whether binutils is new enough to compile SSSE3/MMXEXT
5974     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5975     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5976
5977     probe_x86asm(){
5978         x86asmexe_probe=$1
5979         if test_cmd $x86asmexe_probe -v; then
5980             x86asmexe=$x86asmexe_probe
5981             x86asm_type=nasm
5982             x86asm_debug="-g -F dwarf"
5983             X86ASMDEP=
5984             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5985         elif test_cmd $x86asmexe_probe --version; then
5986             x86asmexe=$x86asmexe_probe
5987             x86asm_type=yasm
5988             x86asm_debug="-g dwarf2"
5989             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5990             X86ASM_DEPFLAGS=
5991         fi
5992         check_x86asm x86asm "movbe ecx, [5]"
5993     }
5994
5995     if ! disabled_any asm mmx x86asm; then
5996         disable x86asm
5997         for program in $x86asmexe nasm yasm; do
5998             probe_x86asm $program && break
5999         done
6000         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6001         X86ASMFLAGS="-f $objformat"
6002         enabled pic               && append X86ASMFLAGS "-DPIC"
6003         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6004         case "$objformat" in
6005             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6006         esac
6007
6008         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6009         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6010         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6011         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6012         check_x86asm cpunop          "CPU amdnop"
6013     fi
6014
6015     case "$cpu" in
6016         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6017             disable fast_clz
6018         ;;
6019     esac
6020
6021 fi
6022
6023 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6024
6025 check_ldflags -Wl,--as-needed
6026 check_ldflags -Wl,-z,noexecstack
6027
6028 if ! disabled network; then
6029     check_func getaddrinfo $network_extralibs
6030     check_func inet_aton $network_extralibs
6031
6032     check_type netdb.h "struct addrinfo"
6033     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6034     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6035     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6036     check_type poll.h "struct pollfd"
6037     check_type netinet/sctp.h "struct sctp_event_subscribe"
6038     check_struct "sys/socket.h" "struct msghdr" msg_flags
6039     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6040     check_type netinet/in.h "struct sockaddr_in6"
6041     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6042     check_type "sys/types.h sys/socket.h" socklen_t
6043
6044     # Prefer arpa/inet.h over winsock2
6045     if check_headers arpa/inet.h ; then
6046         check_func closesocket
6047     elif check_headers winsock2.h ; then
6048         check_func_headers winsock2.h closesocket -lws2 &&
6049             network_extralibs="-lws2" ||
6050         { check_func_headers winsock2.h closesocket -lws2_32 &&
6051             network_extralibs="-lws2_32"; } || disable winsock2_h network
6052         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6053
6054         check_type ws2tcpip.h socklen_t
6055         check_type ws2tcpip.h "struct addrinfo"
6056         check_type ws2tcpip.h "struct group_source_req"
6057         check_type ws2tcpip.h "struct ip_mreq_source"
6058         check_type ws2tcpip.h "struct ipv6_mreq"
6059         check_type winsock2.h "struct pollfd"
6060         check_struct winsock2.h "struct sockaddr" sa_len
6061         check_type ws2tcpip.h "struct sockaddr_in6"
6062         check_type ws2tcpip.h "struct sockaddr_storage"
6063     else
6064         disable network
6065     fi
6066 fi
6067
6068 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6069 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6070 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6071 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6072 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6073 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6074 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6075
6076 case "$custom_allocator" in
6077     jemalloc)
6078         # jemalloc by default does not use a prefix
6079         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6080     ;;
6081     tcmalloc)
6082         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6083         malloc_prefix=tc_
6084     ;;
6085 esac
6086
6087 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6088 check_func  ${malloc_prefix}memalign            && enable memalign
6089 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6090
6091 check_func  access
6092 check_func_headers stdlib.h arc4random
6093 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6094 check_func  fcntl
6095 check_func  fork
6096 check_func  gethrtime
6097 check_func  getopt
6098 check_func  getrusage
6099 check_func  gettimeofday
6100 check_func  isatty
6101 check_func  mkstemp
6102 check_func  mmap
6103 check_func  mprotect
6104 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6105 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6106 check_func  sched_getaffinity
6107 check_func  setrlimit
6108 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6109 check_func  strerror_r
6110 check_func  sysconf
6111 check_func  sysctl
6112 check_func  usleep
6113
6114 check_func_headers conio.h kbhit
6115 check_func_headers io.h setmode
6116 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6117 check_func_headers mach/mach_time.h mach_absolute_time
6118 check_func_headers stdlib.h getenv
6119 check_func_headers sys/stat.h lstat
6120
6121 check_func_headers windows.h GetModuleHandle
6122 check_func_headers windows.h GetProcessAffinityMask
6123 check_func_headers windows.h GetProcessTimes
6124 check_func_headers windows.h GetStdHandle
6125 check_func_headers windows.h GetSystemTimeAsFileTime
6126 check_func_headers windows.h LoadLibrary
6127 check_func_headers windows.h MapViewOfFile
6128 check_func_headers windows.h PeekNamedPipe
6129 check_func_headers windows.h SetConsoleTextAttribute
6130 check_func_headers windows.h SetConsoleCtrlHandler
6131 check_func_headers windows.h SetDllDirectory
6132 check_func_headers windows.h Sleep
6133 check_func_headers windows.h VirtualAlloc
6134 check_func_headers glob.h glob
6135 enabled xlib &&
6136     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6137
6138 check_headers direct.h
6139 check_headers dirent.h
6140 check_headers dxgidebug.h
6141 check_headers dxva.h
6142 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6143 check_headers io.h
6144 check_headers linux/perf_event.h
6145 check_headers libcrystalhd/libcrystalhd_if.h
6146 check_headers malloc.h
6147 check_headers mftransform.h
6148 check_headers net/udplite.h
6149 check_headers poll.h
6150 check_headers sys/param.h
6151 check_headers sys/resource.h
6152 check_headers sys/select.h
6153 check_headers sys/time.h
6154 check_headers sys/un.h
6155 check_headers termios.h
6156 check_headers unistd.h
6157 check_headers valgrind/valgrind.h
6158 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6159 check_headers windows.h
6160 check_headers X11/extensions/XvMClib.h
6161 check_headers asm/types.h
6162
6163 # it seems there are versions of clang in some distros that try to use the
6164 # gcc headers, which explodes for stdatomic
6165 # so we also check that atomics actually work here
6166 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6167
6168 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6169 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6170     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6171 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6172 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6173 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6174
6175 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6176 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6177 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6178
6179 enabled appkit       && check_apple_framework AppKit
6180 enabled audiotoolbox && check_apple_framework AudioToolbox
6181 enabled avfoundation && check_apple_framework AVFoundation
6182 enabled coreimage    && check_apple_framework CoreImage
6183 enabled videotoolbox && check_apple_framework VideoToolbox
6184
6185 check_apple_framework CoreFoundation
6186 check_apple_framework CoreMedia
6187 check_apple_framework CoreVideo
6188 check_apple_framework CoreAudio
6189
6190 enabled avfoundation && {
6191     disable coregraphics applicationservices
6192     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6193     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6194
6195 enabled videotoolbox && {
6196     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6197     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6198     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6199     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6200     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6201     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6202 }
6203
6204 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6205
6206 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6207 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6208 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6209 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6210 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6211 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6212
6213 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6214 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6215
6216 if [ -z "$nvccflags" ]; then
6217     nvccflags=$nvccflags_default
6218 fi
6219
6220 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6221     nvccflags="$nvccflags -m64"
6222 else
6223     nvccflags="$nvccflags -m32"
6224 fi
6225
6226 if enabled cuda_nvcc; then
6227     nvccflags="$nvccflags -ptx"
6228 else
6229     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6230     check_nvcc cuda_llvm
6231 fi
6232
6233 if ! disabled ffnvcodec; then
6234     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6235     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6236       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6237       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6238       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6239 fi
6240
6241 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6242
6243 if ! disabled w32threads && ! enabled pthreads; then
6244     check_func_headers "windows.h process.h" _beginthreadex &&
6245         check_type "windows.h" CONDITION_VARIABLE &&
6246         check_type "windows.h" INIT_ONCE &&
6247         enable w32threads || disable w32threads
6248     if ! enabled w32threads && enabled winrt; then
6249         check_func_headers "windows.h" CreateThread &&
6250             enable w32threads || disable w32threads
6251     fi
6252 fi
6253
6254 # check for some common methods of building with pthread support
6255 # do this before the optional library checks as some of them require pthreads
6256 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6257     if check_lib pthreads pthread.h pthread_join   -pthread &&
6258        check_lib pthreads pthread.h pthread_create -pthread; then
6259         add_cflags -pthread
6260     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6261          check_lib pthreads pthread.h pthread_create -pthreads; then
6262         add_cflags -pthreads
6263     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6264          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6265         add_cflags -ldl -pthread
6266     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6267          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6268         :
6269     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6270          check_lib pthreads pthread.h pthread_create -lpthread; then
6271         :
6272     elif check_func pthread_join && check_func pthread_create; then
6273         enable pthreads
6274     fi
6275     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6276
6277     if enabled pthreads; then
6278         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6279         check_func pthread_cancel $pthreads_extralibs
6280     fi
6281 fi
6282
6283 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6284                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6285 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6286 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6287
6288 # On some systems dynamic loading requires no extra linker flags
6289 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6290
6291 check_lib libm math.h sin -lm
6292
6293 atan2f_args=2
6294 copysign_args=2
6295 hypot_args=2
6296 ldexpf_args=2
6297 powf_args=2
6298
6299 for func in $MATH_FUNCS; do
6300     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6301 done
6302
6303 for func in $COMPLEX_FUNCS; do
6304     eval check_complexfunc $func \${${func}_args:-1}
6305 done
6306
6307 # these are off by default, so fail if requested and not available
6308 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6309 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6310 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6311 enabled decklink          && { require_headers DeckLinkAPI.h &&
6312                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6313 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6314 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6315 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6316 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6317 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6318 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6319 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6320                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6321                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6322 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6323 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6324 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6325 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6326 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6327 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6328                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6329                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6330 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6331 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6332 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6333 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6334 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6335 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6336 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6337                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6338                                  warn "using libfdk without pkg-config"; } }
6339 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"
6340 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6341 enabled fontconfig        && enable libfontconfig
6342 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6343 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6344 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6345 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6346 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6347                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6348 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6349                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6350                                done || die "ERROR: libgsm not found"; }
6351 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6352 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6353 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6354 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6355 # While it may appear that require is being used as a pkg-config
6356 # fallback for libmfx, it is actually being used to detect a different
6357 # installation route altogether.  If libmfx is installed via the Intel
6358 # Media SDK or Intel Media Server Studio, these don't come with
6359 # pkg-config support.  Instead, users should make sure that the build
6360 # can find the libraries and headers through other means.
6361 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6362                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6363 if enabled libmfx; then
6364    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6365 fi
6366
6367 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6368 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6369 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6370                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6371 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6372                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6373                                die "ERROR: libnpp not found"; }
6374 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6375 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6376 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6377                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6378                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6379                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6380 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6381 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6382                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6383 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6384 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6385 enabled libopus           && {
6386     enabled libopus_decoder && {
6387         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6388     }
6389     enabled libopus_encoder && {
6390         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6391     }
6392 }
6393 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6394 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6395 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6396 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6397 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6398 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6399 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6400 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6401                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6402 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6403 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6404 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6405 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6406 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6407 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6408 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6409 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6410 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6411 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6412 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6413                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6414                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6415 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6416 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6417 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6418 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6419 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6420 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6421                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6422
6423 enabled libvpx            && {
6424     enabled libvpx_vp8_decoder && {
6425         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6426             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"
6427     }
6428     enabled libvpx_vp8_encoder && {
6429         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6430             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"
6431     }
6432     enabled libvpx_vp9_decoder && {
6433         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6434             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"
6435     }
6436     enabled libvpx_vp9_encoder && {
6437         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6438             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"
6439     }
6440     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6441         die "libvpx enabled but no supported decoders found"
6442     fi
6443 }
6444
6445 enabled libwebp           && {
6446     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6447     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6448 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6449                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6450                                  warn "using libx264 without pkg-config"; } } &&
6451                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6452                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6453 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6454                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6455 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6456 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6457 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6458 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6459 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6460 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6461                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6462                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6463 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6464 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6465                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6466                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6467                                die "ERROR: mbedTLS not found"; }
6468 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6469 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6470                                { ! enabled cross_compile &&
6471                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6472                                  add_ldflags -L/opt/vc/lib/ &&
6473                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6474                                die "ERROR: mmal not found" &&
6475                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6476 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6477                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6478                                die "ERROR: openal not found"; } &&
6479                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6480                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6481 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6482                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6483                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6484                                die "ERROR: opencl not found"; } &&
6485                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6486                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6487                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6488 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6489                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6490                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6491                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6492                                die "ERROR: opengl not found."
6493                              }
6494 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6495                                { ! enabled cross_compile &&
6496                                  add_cflags -isystem/opt/vc/include/IL &&
6497                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6498                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6499                              enable omx
6500 enabled omx               && require_headers OMX_Core.h
6501 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6502                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6503                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6504                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6505                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6506                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6507                                die "ERROR: openssl not found"; }
6508 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6509 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6510                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6511                                { enabled libdrm ||
6512                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6513                              }
6514 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6515
6516
6517 if enabled gcrypt; then
6518     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6519     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6520         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6521         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6522         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6523             die "ERROR: gcrypt not found"
6524         add_cflags $gcrypt_cflags
6525     else
6526         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6527     fi
6528 fi
6529
6530 if enabled sdl2; then
6531     SDL2_CONFIG="${cross_prefix}sdl2-config"
6532     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6533     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6534         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6535         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6536         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6537         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6538         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6539             enable sdl2
6540     fi
6541     if test $target_os = "mingw32"; then
6542         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6543     fi
6544 fi
6545
6546 if enabled decklink; then
6547     case $target_os in
6548         mingw32*|mingw64*|win32|win64)
6549             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6550             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6551             ;;
6552     esac
6553 fi
6554
6555 enabled securetransport &&
6556     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6557     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6558         disable securetransport
6559
6560 enabled securetransport &&
6561     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6562
6563 enabled schannel &&
6564     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6565     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6566     schannel_extralibs="-lsecur32" ||
6567         disable schannel
6568
6569 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6570 enabled makeinfo \
6571     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6572     && enable makeinfo_html || disable makeinfo_html
6573 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6574 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6575 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6576 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6577
6578 # check V4L2 codecs available in the API
6579 if enabled v4l2_m2m; then
6580     check_headers linux/fb.h
6581     check_headers linux/videodev2.h
6582     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6583     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6584     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6585     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6586     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6587     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6588     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6589     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6590     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6591     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6592     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6593 fi
6594
6595 check_headers sys/videoio.h
6596 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6597
6598 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6599 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6600 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6601 # w32api 3.12 had it defined wrong
6602 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6603
6604 check_type "dshow.h" IBaseFilter
6605
6606 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6607 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6608     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6609     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6610     check_headers "dev/ic/bt8xx.h"
6611
6612 if check_struct sys/soundcard.h audio_buf_info bytes; then
6613     enable_sanitized sys/soundcard.h
6614 else
6615     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6616     #include <sys/soundcard.h>
6617     audio_buf_info abc;
6618 EOF
6619 fi
6620
6621 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6622                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6623
6624 enabled libjack &&
6625     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6626
6627 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6628
6629 if enabled libcdio; then
6630     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6631     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6632     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6633     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6634     die "ERROR: No usable libcdio/cdparanoia found"
6635 fi
6636
6637 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6638     disable libxcb_shm libxcb_shape libxcb_xfixes
6639
6640 if enabled libxcb; then
6641     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6642     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6643     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6644 fi
6645
6646 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6647
6648 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6649 # the desktop api partition
6650 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6651 #ifdef WINAPI_FAMILY
6652 #include <winapifamily.h>
6653 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6654 #error desktop, not uwp
6655 #else
6656 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6657 #endif
6658 #else
6659 #error no family set
6660 #endif
6661 EOF
6662
6663 enabled libdrm &&
6664     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6665
6666 enabled vaapi &&
6667     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6668
6669 if enabled vaapi; then
6670     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6671
6672     if enabled xlib; then
6673         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6674     fi
6675
6676     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6677
6678     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6679     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6680     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6681     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6682     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6683     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6684     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6685     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6686     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6687 fi
6688
6689 if enabled_all opencl libdrm ; then
6690     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6691         enable opencl_drm_beignet
6692     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6693         enable opencl_drm_arm
6694 fi
6695
6696 if enabled_all opencl vaapi ; then
6697     if enabled opencl_drm_beignet ; then
6698         enable opencl_vaapi_beignet
6699     else
6700         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6701             enable opencl_vaapi_intel_media
6702     fi
6703 fi
6704
6705 if enabled_all opencl dxva2 ; then
6706     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6707         enable opencl_dxva2
6708 fi
6709
6710 if enabled_all opencl d3d11va ; then
6711     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6712         enable opencl_d3d11
6713 fi
6714
6715 enabled vdpau &&
6716     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6717
6718 enabled vdpau &&
6719     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6720
6721 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6722
6723 enabled vulkan &&
6724     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6725
6726 if enabled x86; then
6727     case $target_os in
6728         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6729             ;;
6730         *)
6731             disable ffnvcodec cuvid nvdec nvenc
6732             ;;
6733     esac
6734 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6735     case $target_os in
6736         linux)
6737             ;;
6738         *)
6739             disable ffnvcodec cuvid nvdec nvenc
6740             ;;
6741     esac
6742 else
6743     disable ffnvcodec cuvid nvdec nvenc
6744 fi
6745
6746 enabled ffnvcodec && enable cuda
6747
6748 enabled nvenc &&
6749     test_cc -I$source_path <<EOF || disable nvenc
6750 #include <ffnvcodec/nvEncodeAPI.h>
6751 NV_ENCODE_API_FUNCTION_LIST flist;
6752 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6753 int main(void) { return 0; }
6754 EOF
6755
6756 if enabled_any nvdec cuvid; then
6757     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6758 fi
6759
6760 enabled amf &&
6761     check_cpp_condition amf "AMF/core/Version.h" \
6762         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6763
6764 # Funny iconv installations are not unusual, so check it after all flags have been set
6765 if enabled libc_iconv; then
6766     check_func_headers iconv.h iconv
6767 elif enabled iconv; then
6768     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6769 fi
6770
6771 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6772
6773 # add some useful compiler flags if supported
6774 check_cflags -Wdeclaration-after-statement
6775 check_cflags -Wall
6776 check_cflags -Wdisabled-optimization
6777 check_cflags -Wpointer-arith
6778 check_cflags -Wredundant-decls
6779 check_cflags -Wwrite-strings
6780 check_cflags -Wtype-limits
6781 check_cflags -Wundef
6782 check_cflags -Wmissing-prototypes
6783 check_cflags -Wno-pointer-to-int-cast
6784 check_cflags -Wstrict-prototypes
6785 check_cflags -Wempty-body
6786
6787 if enabled extra_warnings; then
6788     check_cflags -Wcast-qual
6789     check_cflags -Wextra
6790     check_cflags -Wpedantic
6791 fi
6792
6793 check_disable_warning(){
6794     warning_flag=-W${1#-Wno-}
6795     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6796 }
6797
6798 test_cflags -Werror=unused-command-line-argument &&
6799     append unknown_warning_flags "-Werror=unused-command-line-argument"
6800 test_cflags -Werror=unknown-warning-option &&
6801     append unknown_warning_flags "-Werror=unknown-warning-option"
6802
6803 check_disable_warning -Wno-parentheses
6804 check_disable_warning -Wno-switch
6805 check_disable_warning -Wno-format-zero-length
6806 check_disable_warning -Wno-pointer-sign
6807 check_disable_warning -Wno-unused-const-variable
6808 check_disable_warning -Wno-bool-operation
6809 check_disable_warning -Wno-char-subscripts
6810
6811 check_disable_warning_headers(){
6812     warning_flag=-W${1#-Wno-}
6813     test_cflags $warning_flag && add_cflags_headers $1
6814 }
6815
6816 check_disable_warning_headers -Wno-deprecated-declarations
6817 check_disable_warning_headers -Wno-unused-variable
6818
6819 test_cc <<EOF && enable blocks_extension
6820 void (^block)(void);
6821 EOF
6822
6823 # add some linker flags
6824 check_ldflags -Wl,--warn-common
6825 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6826 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6827 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6828
6829 # add some strip flags
6830 check_stripflags -x
6831
6832 enabled neon_clobber_test &&
6833     check_ldflags -Wl,--wrap,avcodec_open2              \
6834                   -Wl,--wrap,avcodec_decode_audio4      \
6835                   -Wl,--wrap,avcodec_decode_video2      \
6836                   -Wl,--wrap,avcodec_decode_subtitle2   \
6837                   -Wl,--wrap,avcodec_encode_audio2      \
6838                   -Wl,--wrap,avcodec_encode_video2      \
6839                   -Wl,--wrap,avcodec_encode_subtitle    \
6840                   -Wl,--wrap,avcodec_send_packet        \
6841                   -Wl,--wrap,avcodec_receive_packet     \
6842                   -Wl,--wrap,avcodec_send_frame         \
6843                   -Wl,--wrap,avcodec_receive_frame      \
6844                   -Wl,--wrap,swr_convert                \
6845                   -Wl,--wrap,avresample_convert ||
6846     disable neon_clobber_test
6847
6848 enabled xmm_clobber_test &&
6849     check_ldflags -Wl,--wrap,avcodec_open2              \
6850                   -Wl,--wrap,avcodec_decode_audio4      \
6851                   -Wl,--wrap,avcodec_decode_video2      \
6852                   -Wl,--wrap,avcodec_decode_subtitle2   \
6853                   -Wl,--wrap,avcodec_encode_audio2      \
6854                   -Wl,--wrap,avcodec_encode_video2      \
6855                   -Wl,--wrap,avcodec_encode_subtitle    \
6856                   -Wl,--wrap,avcodec_send_packet        \
6857                   -Wl,--wrap,avcodec_receive_packet     \
6858                   -Wl,--wrap,avcodec_send_frame         \
6859                   -Wl,--wrap,avcodec_receive_frame      \
6860                   -Wl,--wrap,swr_convert                \
6861                   -Wl,--wrap,avresample_convert         \
6862                   -Wl,--wrap,sws_scale ||
6863     disable xmm_clobber_test
6864
6865 check_ld "cc" proper_dce <<EOF
6866 extern const int array[512];
6867 static inline int func(void) { return array[0]; }
6868 int main(void) { return 0; }
6869 EOF
6870
6871 if enabled proper_dce; then
6872     echo "X { local: *; };" > $TMPV
6873     if test_ldflags -Wl,${version_script},$TMPV; then
6874         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6875         quotes='""'
6876         test_cc <<EOF && enable symver_asm_label
6877 void ff_foo(void) __asm__ ("av_foo@VERSION");
6878 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6879 EOF
6880         test_cc <<EOF && enable symver_gnu_asm
6881 __asm__(".symver ff_foo,av_foo@VERSION");
6882 void ff_foo(void) {}
6883 EOF
6884     fi
6885 fi
6886
6887 if [ -z "$optflags" ]; then
6888     if enabled small; then
6889         optflags=$cflags_size
6890     elif enabled optimizations; then
6891         optflags=$cflags_speed
6892     else
6893         optflags=$cflags_noopt
6894     fi
6895 fi
6896
6897 check_optflags(){
6898     check_cflags "$@"
6899     enabled lto && check_ldflags "$@"
6900 }
6901
6902 check_optflags $optflags
6903 check_optflags -fno-math-errno
6904 check_optflags -fno-signed-zeros
6905
6906 if enabled lto; then
6907     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6908     check_cflags  -flto
6909     check_ldflags -flto $cpuflags
6910     disable inline_asm_direct_symbol_refs
6911 fi
6912
6913 enabled ftrapv && check_cflags -ftrapv
6914
6915 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6916 int x;
6917 EOF
6918
6919
6920 if enabled icc; then
6921     # Just warnings, no remarks
6922     check_cflags -w1
6923     # -wd: Disable following warnings
6924     # 144, 167, 556: -Wno-pointer-sign
6925     # 188: enumerated type mixed with another type
6926     # 1292: attribute "foo" ignored
6927     # 1419: external declaration in primary source file
6928     # 10006: ignoring unknown option -fno-signed-zeros
6929     # 10148: ignoring unknown option -Wno-parentheses
6930     # 10156: ignoring option '-W'; no argument required
6931     # 13200: No EMMS instruction before call to function
6932     # 13203: No EMMS instruction before return from function
6933     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6934     # 11030: Warning unknown option --as-needed
6935     # 10156: ignoring option '-export'; no argument required
6936     check_ldflags -wd10156,11030
6937     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6938     enable ebp_available
6939     # The test above does not test linking
6940     enabled lto && disable symver_asm_label
6941     if enabled x86_32; then
6942         icc_version=$($cc -dumpversion)
6943         test ${icc_version%%.*} -ge 11 &&
6944             check_cflags -falign-stack=maintain-16-byte ||
6945             disable aligned_stack
6946     fi
6947 elif enabled gcc; then
6948     check_optflags -fno-tree-vectorize
6949     check_cflags -Werror=format-security
6950     check_cflags -Werror=implicit-function-declaration
6951     check_cflags -Werror=missing-prototypes
6952     check_cflags -Werror=return-type
6953     check_cflags -Werror=vla
6954     check_cflags -Wformat
6955     check_cflags -fdiagnostics-color=auto
6956     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6957     if enabled x86_32; then
6958         case $target_os in
6959         *bsd*)
6960             # BSDs don't guarantee a 16 byte aligned stack, but we can
6961             # request GCC to try to maintain 16 byte alignment throughout
6962             # function calls. Library entry points that might call assembly
6963             # functions align the stack. (The parameter means 2^4 bytes.)
6964             check_cflags -mpreferred-stack-boundary=4
6965             ;;
6966         esac
6967     fi
6968 elif enabled llvm_gcc; then
6969     check_cflags -mllvm -stack-alignment=16
6970 elif enabled clang; then
6971     if enabled x86_32; then
6972         # Clang doesn't support maintaining alignment without assuming the
6973         # same alignment in every function. If 16 byte alignment would be
6974         # enabled, one would also have to either add attribute_align_arg on
6975         # every single entry point into the libraries or enable -mstackrealign
6976         # (doing stack realignment in every single function).
6977         case $target_os in
6978         mingw32|win32|*bsd*)
6979             disable aligned_stack
6980             ;;
6981         *)
6982             check_cflags -mllvm -stack-alignment=16
6983             check_cflags -mstack-alignment=16
6984             ;;
6985         esac
6986     else
6987         check_cflags -mllvm -stack-alignment=16
6988         check_cflags -mstack-alignment=16
6989     fi
6990     check_cflags -Qunused-arguments
6991     check_cflags -Werror=implicit-function-declaration
6992     check_cflags -Werror=missing-prototypes
6993     check_cflags -Werror=return-type
6994 elif enabled cparser; then
6995     add_cflags -Wno-missing-variable-declarations
6996     add_cflags -Wno-empty-statement
6997 elif enabled armcc; then
6998     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6999     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7000     # 2523: use of inline assembly is deprecated
7001     add_cflags -W${armcc_opt},--diag_suppress=2523
7002     add_cflags -W${armcc_opt},--diag_suppress=1207
7003     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7004     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7005     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7006     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7007 elif enabled pathscale; then
7008     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7009     disable inline_asm
7010 elif enabled_any msvc icl; then
7011     enabled x86_32 && disable aligned_stack
7012     enabled_all x86_32 debug && add_cflags -Oy-
7013     enabled debug && add_ldflags -debug
7014     enable pragma_deprecated
7015     if enabled icl; then
7016         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7017         # (correctly) on icl 13.x.
7018         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7019             add_cflags -Qansi-alias
7020         # Some inline asm is not compilable in debug
7021         if enabled debug; then
7022             disable ebp_available
7023             disable ebx_available
7024         fi
7025     fi
7026     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7027     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7028     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7029     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7030     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7031     # MSVC 2013 and newer can handle it fine.
7032     # If this declspec fails, force including stdlib.h before the restrict redefinition
7033     # happens in config.h.
7034     if [ $restrict_keyword != restrict ]; then
7035         test_cc <<EOF || add_cflags -FIstdlib.h
7036 __declspec($restrict_keyword) void *foo(int);
7037 EOF
7038     fi
7039     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7040     # Issue has been fixed in MSVC v19.00.24218.
7041     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7042         check_cflags -d2SSAOptimizer-
7043     # enable utf-8 source processing on VS2015 U2 and newer
7044     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7045         add_cflags -utf-8
7046 fi
7047
7048 for pfx in "" host_; do
7049     varname=${pfx%_}cc_type
7050     eval "type=\$$varname"
7051     if [ "$type" = "msvc" ]; then
7052         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7053 static inline int foo(int a) { return a; }
7054 EOF
7055     fi
7056 done
7057
7058 case $as_type in
7059     clang)
7060         add_asflags -Qunused-arguments
7061     ;;
7062 esac
7063
7064 case $ld_type in
7065     clang)
7066         check_ldflags -Qunused-arguments
7067     ;;
7068 esac
7069
7070 enable frame_thread_encoder
7071
7072 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7073
7074 check_deps $CONFIG_LIST       \
7075            $CONFIG_EXTRA      \
7076            $HAVE_LIST         \
7077            $ALL_COMPONENTS    \
7078
7079 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"
7080 enabled avresample && warn "Building with deprecated library libavresample"
7081
7082 case $target_os in
7083 haiku)
7084     disable memalign
7085     disable posix_memalign
7086     ;;
7087 *-dos|freedos|opendos)
7088     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7089         disable memalign
7090     fi
7091     ;;
7092 esac
7093
7094 flatten_extralibs(){
7095     nested_entries=
7096     list_name=$1
7097     eval list=\$${1}
7098     for entry in $list; do
7099         entry_copy=$entry
7100         resolve entry_copy
7101         flat_entries=
7102         for e in $entry_copy; do
7103             case $e in
7104                 *_extralibs) nested_entries="$nested_entries$e ";;
7105                           *) flat_entries="$flat_entries$e ";;
7106             esac
7107         done
7108         eval $entry="\$flat_entries"
7109     done
7110     append $list_name "$nested_entries"
7111
7112     resolve nested_entries
7113     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7114         flatten_extralibs $list_name
7115     fi
7116 }
7117
7118 flatten_extralibs_wrapper(){
7119     list_name=$1
7120     flatten_extralibs $list_name
7121     unique $list_name
7122     resolve $list_name
7123     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7124     eval printf \''%s'\' \""\$$list_name"\"
7125 }
7126
7127 for linkunit in $LIBRARY_LIST; do
7128     unset current_extralibs
7129     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7130     for comp in ${components}; do
7131         enabled $comp || continue
7132         comp_extralibs="${comp}_extralibs"
7133         append current_extralibs $comp_extralibs
7134     done
7135     eval prepend ${linkunit}_extralibs $current_extralibs
7136 done
7137
7138 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7139     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7140 done
7141
7142 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7143
7144 for thread in $THREADS_LIST; do
7145     if enabled $thread; then
7146         test -n "$thread_type" &&
7147             die "ERROR: Only one thread type must be selected." ||
7148             thread_type="$thread"
7149     fi
7150 done
7151
7152 if disabled stdatomic; then
7153     if enabled atomics_gcc; then
7154         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7155     elif enabled atomics_win32; then
7156         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7157     elif enabled atomics_suncc; then
7158         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7159     elif enabled pthreads; then
7160         add_compat atomics/pthread/stdatomic.o
7161         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7162     else
7163         enabled threads && die "Threading is enabled, but no atomics are available"
7164         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7165     fi
7166 fi
7167
7168 # Check if requested libraries were found.
7169 for lib in $AUTODETECT_LIBS; do
7170     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7171 done
7172
7173 enabled zlib && add_cppflags -DZLIB_CONST
7174
7175 # conditional library dependencies, in any order
7176 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7177 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7178 enabled afir_filter         && prepend avfilter_deps "avcodec"
7179 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7180 enabled aresample_filter    && prepend avfilter_deps "swresample"
7181 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7182 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7183 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7184 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7185 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7186 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7187 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7188 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7189 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7190 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7191 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7192 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7193 enabled pan_filter          && prepend avfilter_deps "swresample"
7194 enabled pp_filter           && prepend avfilter_deps "postproc"
7195 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7196 enabled resample_filter && prepend avfilter_deps "avresample"
7197 enabled sab_filter          && prepend avfilter_deps "swscale"
7198 enabled scale_filter    && prepend avfilter_deps "swscale"
7199 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7200 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7201 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7202 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7203 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7204 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7205 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7206 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7207 enabled spp_filter          && prepend avfilter_deps "avcodec"
7208 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7209 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7210 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7211 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7212
7213 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7214
7215 #FIXME
7216 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7217     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7218
7219 enabled opus_decoder    && prepend avcodec_deps "swresample"
7220
7221 # reorder the items at var $1 to align with the items order at var $2 .
7222 # die if an item at $1 is not at $2 .
7223 reorder_by(){
7224     eval rb_in=\$$1
7225     eval rb_ordered=\$$2
7226
7227     for rb in $rb_in; do
7228         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7229     done
7230
7231     rb_out=
7232     for rb in $rb_ordered; do
7233         is_in $rb $rb_in && rb_out="$rb_out$rb "
7234     done
7235     eval $1=\$rb_out
7236 }
7237
7238 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7239 # within a set of N items, N expansions are enough to expose a cycle.
7240 expand_deps(){
7241     unique ${1}_deps  # required for the early break test.
7242     for dummy in $LIBRARY_LIST; do  # N iteratios
7243         eval deps=\$${1}_deps
7244         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7245         unique ${1}_deps
7246         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7247     done
7248
7249     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7250     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7251 }
7252
7253 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7254 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7255
7256 map 'expand_deps $v' $LIBRARY_LIST
7257
7258 if test "$quiet" != "yes"; then
7259
7260 echo "install prefix            $prefix"
7261 echo "source path               $source_path"
7262 echo "C compiler                $cc"
7263 echo "C library                 $libc_type"
7264 if test "$host_cc" != "$cc"; then
7265     echo "host C compiler           $host_cc"
7266     echo "host C library            $host_libc_type"
7267 fi
7268 echo "ARCH                      $arch ($cpu)"
7269 if test "$build_suffix" != ""; then
7270     echo "build suffix              $build_suffix"
7271 fi
7272 if test "$progs_suffix" != ""; then
7273     echo "progs suffix              $progs_suffix"
7274 fi
7275 if test "$extra_version" != ""; then
7276     echo "version string suffix     $extra_version"
7277 fi
7278 echo "big-endian                ${bigendian-no}"
7279 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7280 if enabled x86; then
7281     echo "standalone assembly       ${x86asm-no}"
7282     echo "x86 assembler             ${x86asmexe}"
7283     echo "MMX enabled               ${mmx-no}"
7284     echo "MMXEXT enabled            ${mmxext-no}"
7285     echo "3DNow! enabled            ${amd3dnow-no}"
7286     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7287     echo "SSE enabled               ${sse-no}"
7288     echo "SSSE3 enabled             ${ssse3-no}"
7289     echo "AESNI enabled             ${aesni-no}"
7290     echo "AVX enabled               ${avx-no}"
7291     echo "AVX2 enabled              ${avx2-no}"
7292     echo "AVX-512 enabled           ${avx512-no}"
7293     echo "XOP enabled               ${xop-no}"
7294     echo "FMA3 enabled              ${fma3-no}"
7295     echo "FMA4 enabled              ${fma4-no}"
7296     echo "i686 features enabled     ${i686-no}"
7297     echo "CMOV is fast              ${fast_cmov-no}"
7298     echo "EBX available             ${ebx_available-no}"
7299     echo "EBP available             ${ebp_available-no}"
7300 fi
7301 if enabled aarch64; then
7302     echo "NEON enabled              ${neon-no}"
7303     echo "VFP enabled               ${vfp-no}"
7304 fi
7305 if enabled arm; then
7306     echo "ARMv5TE enabled           ${armv5te-no}"
7307     echo "ARMv6 enabled             ${armv6-no}"
7308     echo "ARMv6T2 enabled           ${armv6t2-no}"
7309     echo "VFP enabled               ${vfp-no}"
7310     echo "NEON enabled              ${neon-no}"
7311     echo "THUMB enabled             ${thumb-no}"
7312 fi
7313 if enabled mips; then
7314     echo "MIPS FPU enabled          ${mipsfpu-no}"
7315     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7316     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7317     echo "MIPS MSA enabled          ${msa-no}"
7318     echo "MIPS MSA2 enabled         ${msa2-no}"
7319     echo "LOONGSON MMI enabled      ${mmi-no}"
7320 fi
7321 if enabled ppc; then
7322     echo "AltiVec enabled           ${altivec-no}"
7323     echo "VSX enabled               ${vsx-no}"
7324     echo "POWER8 enabled            ${power8-no}"
7325     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7326     echo "dcbzl available           ${dcbzl-no}"
7327 fi
7328 echo "debug symbols             ${debug-no}"
7329 echo "strip symbols             ${stripping-no}"
7330 echo "optimize for size         ${small-no}"
7331 echo "optimizations             ${optimizations-no}"
7332 echo "static                    ${static-no}"
7333 echo "shared                    ${shared-no}"
7334 echo "postprocessing support    ${postproc-no}"
7335 echo "network support           ${network-no}"
7336 echo "threading support         ${thread_type-no}"
7337 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7338 echo "texi2html enabled         ${texi2html-no}"
7339 echo "perl enabled              ${perl-no}"
7340 echo "pod2man enabled           ${pod2man-no}"
7341 echo "makeinfo enabled          ${makeinfo-no}"
7342 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7343 test -n "$random_seed" &&
7344     echo "random seed               ${random_seed}"
7345 echo
7346
7347 echo "External libraries:"
7348 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7349 echo
7350
7351 echo "External libraries providing hardware acceleration:"
7352 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7353 echo
7354
7355 echo "Libraries:"
7356 print_enabled '' $LIBRARY_LIST | print_in_columns
7357 echo
7358
7359 echo "Programs:"
7360 print_enabled '' $PROGRAM_LIST | print_in_columns
7361 echo
7362
7363 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7364     echo "Enabled ${type}s:"
7365     eval list=\$$(toupper $type)_LIST
7366     print_enabled '_*' $list | print_in_columns
7367     echo
7368 done
7369
7370 if test -n "$ignore_tests"; then
7371     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7372     echo "Ignored FATE tests:"
7373     echo $ignore_tests | print_in_columns
7374     echo
7375 fi
7376
7377 echo "License: $license"
7378
7379 fi # test "$quiet" != "yes"
7380
7381 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7382     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7383         if disabled $cfg; then
7384             varname=${cfg}_disable_reason
7385             eval "warn \"Disabled $cfg because \$$varname\""
7386         fi
7387     done
7388 fi
7389
7390 if test -n "$WARNINGS"; then
7391     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7392     enabled fatal_warnings && exit 1
7393 fi
7394
7395 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7396
7397 esc(){
7398     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7399 }
7400
7401 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7402
7403 enabled stripping || strip="echo skipping strip"
7404 enabled stripping || striptype=""
7405
7406 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7407
7408 cat > ffbuild/config.mak <<EOF
7409 # Automatically generated by configure - do not modify!
7410 ifndef FFMPEG_CONFIG_MAK
7411 FFMPEG_CONFIG_MAK=1
7412 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7413 prefix=$prefix
7414 LIBDIR=\$(DESTDIR)$libdir
7415 SHLIBDIR=\$(DESTDIR)$shlibdir
7416 INCDIR=\$(DESTDIR)$incdir
7417 BINDIR=\$(DESTDIR)$bindir
7418 DATADIR=\$(DESTDIR)$datadir
7419 DOCDIR=\$(DESTDIR)$docdir
7420 MANDIR=\$(DESTDIR)$mandir
7421 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7422 INSTALL_NAME_DIR=$install_name_dir
7423 SRC_PATH=$source_path
7424 SRC_LINK=$source_link
7425 ifndef MAIN_MAKEFILE
7426 SRC_PATH:=\$(SRC_PATH:.%=..%)
7427 endif
7428 CC_IDENT=$cc_ident
7429 ARCH=$arch
7430 INTRINSICS=$intrinsics
7431 EXTERN_PREFIX=$extern_prefix
7432 CC=$cc
7433 CXX=$cxx
7434 AS=$as
7435 OBJCC=$objcc
7436 LD=$ld
7437 DEPCC=$dep_cc
7438 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7439 DEPAS=$as
7440 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7441 X86ASM=$x86asmexe
7442 DEPX86ASM=$x86asmexe
7443 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7444 AR=$ar
7445 ARFLAGS=$arflags
7446 AR_O=$ar_o
7447 AR_CMD=$ar
7448 NM_CMD=$nm
7449 RANLIB=$ranlib
7450 STRIP=$strip
7451 STRIPTYPE=$striptype
7452 NVCC=$nvcc
7453 CP=cp -p
7454 LN_S=$ln_s
7455 CPPFLAGS=$CPPFLAGS
7456 CFLAGS=$CFLAGS
7457 CXXFLAGS=$CXXFLAGS
7458 OBJCFLAGS=$OBJCFLAGS
7459 ASFLAGS=$ASFLAGS
7460 NVCCFLAGS=$nvccflags
7461 AS_C=$AS_C
7462 AS_O=$AS_O
7463 OBJCC_C=$OBJCC_C
7464 OBJCC_E=$OBJCC_E
7465 OBJCC_O=$OBJCC_O
7466 CC_C=$CC_C
7467 CC_E=$CC_E
7468 CC_O=$CC_O
7469 CXX_C=$CXX_C
7470 CXX_O=$CXX_O
7471 NVCC_C=$NVCC_C
7472 NVCC_O=$NVCC_O
7473 LD_O=$LD_O
7474 X86ASM_O=$X86ASM_O
7475 LD_LIB=$LD_LIB
7476 LD_PATH=$LD_PATH
7477 DLLTOOL=$dlltool
7478 WINDRES=$windres
7479 DEPWINDRES=$dep_cc
7480 DOXYGEN=$doxygen
7481 LDFLAGS=$LDFLAGS
7482 LDEXEFLAGS=$LDEXEFLAGS
7483 LDSOFLAGS=$LDSOFLAGS
7484 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7485 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7486 X86ASMFLAGS=$X86ASMFLAGS
7487 MSAFLAGS=$MSAFLAGS
7488 MMIFLAGS=$MMIFLAGS
7489 BUILDSUF=$build_suffix
7490 PROGSSUF=$progs_suffix
7491 FULLNAME=$FULLNAME
7492 LIBPREF=$LIBPREF
7493 LIBSUF=$LIBSUF
7494 LIBNAME=$LIBNAME
7495 SLIBPREF=$SLIBPREF
7496 SLIBSUF=$SLIBSUF
7497 EXESUF=$EXESUF
7498 EXTRA_VERSION=$extra_version
7499 CCDEP=$CCDEP
7500 CXXDEP=$CXXDEP
7501 CCDEP_FLAGS=$CCDEP_FLAGS
7502 ASDEP=$ASDEP
7503 ASDEP_FLAGS=$ASDEP_FLAGS
7504 X86ASMDEP=$X86ASMDEP
7505 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7506 CC_DEPFLAGS=$CC_DEPFLAGS
7507 AS_DEPFLAGS=$AS_DEPFLAGS
7508 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7509 HOSTCC=$host_cc
7510 HOSTLD=$host_ld
7511 HOSTCFLAGS=$host_cflags
7512 HOSTCPPFLAGS=$host_cppflags
7513 HOSTEXESUF=$HOSTEXESUF
7514 HOSTLDFLAGS=$host_ldflags
7515 HOSTEXTRALIBS=$host_extralibs
7516 DEPHOSTCC=$host_cc
7517 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7518 HOSTCCDEP=$HOSTCCDEP
7519 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7520 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7521 HOSTCC_C=$HOSTCC_C
7522 HOSTCC_O=$HOSTCC_O
7523 HOSTLD_O=$HOSTLD_O
7524 TARGET_EXEC=$target_exec $target_exec_args
7525 TARGET_PATH=$target_path
7526 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7527 CFLAGS-ffplay=${sdl2_cflags}
7528 CFLAGS_HEADERS=$CFLAGS_HEADERS
7529 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7530 EXTRALIBS=$extralibs
7531 COMPAT_OBJS=$compat_objs
7532 INSTALL=$install
7533 LIBTARGET=${LIBTARGET}
7534 SLIBNAME=${SLIBNAME}
7535 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7536 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7537 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7538 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7539 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7540 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7541 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7542 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7543 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7544 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7545 NOREDZONE_FLAGS=$noredzone_flags
7546 LIBFUZZER_PATH=$libfuzzer_path
7547 IGNORE_TESTS=$ignore_tests
7548 EOF
7549
7550 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7551
7552 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7553     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7554 done
7555
7556 cat > $TMPH <<EOF
7557 /* Automatically generated by configure - do not modify! */
7558 #ifndef FFMPEG_CONFIG_H
7559 #define FFMPEG_CONFIG_H
7560 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7561 #define FFMPEG_LICENSE "$(c_escape $license)"
7562 #define CONFIG_THIS_YEAR 2020
7563 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7564 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7565 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7566 #define av_restrict $restrict_keyword
7567 #define EXTERN_PREFIX "${extern_prefix}"
7568 #define EXTERN_ASM ${extern_prefix}
7569 #define BUILDSUF "$build_suffix"
7570 #define SLIBSUF "$SLIBSUF"
7571 #define HAVE_MMX2 HAVE_MMXEXT
7572 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7573 EOF
7574
7575 test -n "$assert_level" &&
7576     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7577
7578 test -n "$malloc_prefix" &&
7579     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7580
7581 if enabled x86asm; then
7582     append config_files $TMPASM
7583     cat > $TMPASM <<EOF
7584 ; Automatically generated by configure - do not modify!
7585 EOF
7586 fi
7587
7588 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7589
7590
7591 mkdir -p doc
7592 mkdir -p tests
7593 mkdir -p tests/api
7594 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7595
7596 print_config ARCH_   "$config_files" $ARCH_LIST
7597 print_config HAVE_   "$config_files" $HAVE_LIST
7598 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7599                                      $CONFIG_EXTRA      \
7600                                      $ALL_COMPONENTS    \
7601
7602 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7603 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7604
7605 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7606 cp_if_changed $TMPH config.h
7607 touch ffbuild/.config
7608
7609 enabled x86asm && cp_if_changed $TMPASM config.asm
7610
7611 cat > $TMPH <<EOF
7612 /* Generated by ffmpeg configure */
7613 #ifndef AVUTIL_AVCONFIG_H
7614 #define AVUTIL_AVCONFIG_H
7615 EOF
7616
7617 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7618
7619 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7620
7621 cp_if_changed $TMPH libavutil/avconfig.h
7622
7623 # full_filter_name_foo=vf_foo
7624 # full_filter_name_bar=asrc_bar
7625 # ...
7626 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7627
7628 # generate the lists of enabled components
7629 print_enabled_components(){
7630     file=$1
7631     struct_name=$2
7632     name=$3
7633     shift 3
7634     echo "static const $struct_name * const $name[] = {" > $TMPH
7635     for c in $*; do
7636         if enabled $c; then
7637             case $name in
7638                 filter_list)
7639                     eval c=\$full_filter_name_${c%_filter}
7640                 ;;
7641                 indev_list)
7642                     c=${c%_indev}_demuxer
7643                 ;;
7644                 outdev_list)
7645                     c=${c%_outdev}_muxer
7646                 ;;
7647             esac
7648             printf "    &ff_%s,\n" $c >> $TMPH
7649         fi
7650     done
7651     if [ "$name" = "filter_list" ]; then
7652         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7653             printf "    &ff_%s,\n" $c >> $TMPH
7654         done
7655     fi
7656     echo "    NULL };" >> $TMPH
7657     cp_if_changed $TMPH $file
7658 }
7659
7660 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7661 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7662 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7663 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7664 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7665 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7666 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7667 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7668 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7669
7670 # Settings for pkg-config files
7671
7672 cat > $TMPH <<EOF
7673 # Automatically generated by configure - do not modify!
7674 shared=$shared
7675 build_suffix=$build_suffix
7676 prefix=$prefix
7677 libdir=$libdir
7678 incdir=$incdir
7679 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7680 source_path=${source_path}
7681 LIBPREF=${LIBPREF}
7682 LIBSUF=${LIBSUF}
7683 extralibs_avutil="$avutil_extralibs"
7684 extralibs_avcodec="$avcodec_extralibs"
7685 extralibs_avformat="$avformat_extralibs"
7686 extralibs_avdevice="$avdevice_extralibs"
7687 extralibs_avfilter="$avfilter_extralibs"
7688 extralibs_avresample="$avresample_extralibs"
7689 extralibs_postproc="$postproc_extralibs"
7690 extralibs_swscale="$swscale_extralibs"
7691 extralibs_swresample="$swresample_extralibs"
7692 EOF
7693
7694 for lib in $LIBRARY_LIST; do
7695     lib_deps="$(eval echo \$${lib}_deps)"
7696     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7697 done
7698
7699 cp_if_changed $TMPH ffbuild/config.sh