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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 281   --enable-libvidstab      enable video stabilization using vid.stab [no]
 282   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 283   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 284   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 285                            native implementation exists [no]
 286   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 287   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 288   --enable-libwebp         enable WebP encoding via libwebp [no]
 289   --enable-libx264         enable H.264 encoding via x264 [no]
 290   --enable-libx265         enable HEVC encoding via x265 [no]
 291   --enable-libxavs         enable AVS encoding via xavs [no]
 292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 297   --enable-libxvid         enable Xvid encoding via xvidcore,
 298                            native MPEG-4/Xvid encoder exists [no]
 299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 300                            for dash demuxing support [no]
 301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 302   --enable-libzmq          enable message passing via libzmq [no]
 303   --enable-libzvbi         enable teletext support via libzvbi [no]
 304   --enable-lv2             enable LV2 audio filtering [no]
 305   --disable-lzma           disable lzma [autodetect]
 306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 307   --enable-mbedtls         enable mbedTLS, needed for https support
 308                            if openssl, gnutls or libtls is not used [no]
 309   --enable-mediacodec      enable Android MediaCodec support [no]
 310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 312   --enable-openal          enable OpenAL 1.1 capture support [no]
 313   --enable-opencl          enable OpenCL processing [no]
 314   --enable-opengl          enable OpenGL rendering [no]
 315   --enable-openssl         enable openssl, needed for https support
 316                            if gnutls, libtls or mbedtls is not used [no]
 317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 318   --disable-sndio          disable sndio support [autodetect]
 319   --disable-schannel       disable SChannel SSP, needed for TLS support on
 320                            Windows if openssl and gnutls are not used [autodetect]
 321   --disable-sdl2           disable sdl2 [autodetect]
 322   --disable-securetransport disable Secure Transport, needed for TLS support
 323                            on OSX if openssl and gnutls are not used [autodetect]
 324   --enable-vapoursynth     enable VapourSynth demuxer [no]
 325   --enable-vulkan          enable Vulkan code [no]
 326   --disable-xlib           disable xlib [autodetect]
 327   --disable-zlib           disable zlib [autodetect]
 328
 329   The following libraries provide various hardware acceleration features:
 330   --disable-amf            disable AMF video encoding code [autodetect]
 331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 338   --enable-libdrm          enable DRM code (Linux) [no]
 339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 344   --enable-omx             enable OpenMAX IL code [no]
 345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 351
 352 Toolchain options:
 353   --arch=ARCH              select architecture [$arch]
 354   --cpu=CPU                select the minimum required CPU (affects
 355                            instruction selection, may crash on older CPUs)
 356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 357   --progs-suffix=SUFFIX    program name suffix []
 358   --enable-cross-compile   assume a cross-compiler is used
 359   --sysroot=PATH           root of cross-build tree
 360   --sysinclude=PATH        location of cross-build system headers
 361   --target-os=OS           compiler targets OS [$target_os]
 362   --target-exec=CMD        command to run executables on target
 363   --target-path=DIR        path to view of build directory on target
 364   --target-samples=DIR     path to samples directory on target
 365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 366   --toolchain=NAME         set tool defaults according to NAME
 367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 369                            valgrind-massif, valgrind-memcheck,
 370                            msvc, icl, gcov, llvm-cov, hardened)
 371   --nm=NM                  use nm tool NM [$nm_default]
 372   --ar=AR                  use archive tool AR [$ar_default]
 373   --as=AS                  use assembler AS [$as_default]
 374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 375   --strip=STRIP            use strip tool STRIP [$strip_default]
 376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 378   --cc=CC                  use C compiler CC [$cc_default]
 379   --cxx=CXX                use C compiler CXX [$cxx_default]
 380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 383   --ld=LD                  use linker LD [$ld_default]
 384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 388   --host-cc=HOSTCC         use host C compiler HOSTCC
 389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 391   --host-ld=HOSTLD         use host linker HOSTLD
 392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 394   --host-os=OS             compiler host OS [$target_os]
 395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 402   --extra-version=STRING   version string suffix []
 403   --optflags=OPTFLAGS      override optimization-related compiler flags
 404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 405   --build-suffix=SUFFIX    library name suffix []
 406   --enable-pic             build position-independent code
 407   --enable-thumb           compile for Thumb instruction set
 408   --enable-lto             use link-time optimization
 409   --env="ENV=override"     override the environment variables
 410
 411 Advanced options (experts only):
 412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 413   --custom-allocator=NAME  use a supported custom allocator
 414   --disable-symver         disable symbol versioning
 415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 416   --disable-safe-bitstream-reader
 417                            disable buffer boundary checking in bitreaders
 418                            (faster, but may crash)
 419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 420
 421 Optimization options (experts only):
 422   --disable-asm            disable all assembly optimizations
 423   --disable-altivec        disable AltiVec optimizations
 424   --disable-vsx            disable VSX optimizations
 425   --disable-power8         disable POWER8 optimizations
 426   --disable-amd3dnow       disable 3DNow! optimizations
 427   --disable-amd3dnowext    disable 3DNow! extended optimizations
 428   --disable-mmx            disable MMX optimizations
 429   --disable-mmxext         disable MMXEXT optimizations
 430   --disable-sse            disable SSE optimizations
 431   --disable-sse2           disable SSE2 optimizations
 432   --disable-sse3           disable SSE3 optimizations
 433   --disable-ssse3          disable SSSE3 optimizations
 434   --disable-sse4           disable SSE4 optimizations
 435   --disable-sse42          disable SSE4.2 optimizations
 436   --disable-avx            disable AVX optimizations
 437   --disable-xop            disable XOP optimizations
 438   --disable-fma3           disable FMA3 optimizations
 439   --disable-fma4           disable FMA4 optimizations
 440   --disable-avx2           disable AVX2 optimizations
 441   --disable-avx512         disable AVX-512 optimizations
 442   --disable-aesni          disable AESNI optimizations
 443   --disable-armv5te        disable armv5te optimizations
 444   --disable-armv6          disable armv6 optimizations
 445   --disable-armv6t2        disable armv6t2 optimizations
 446   --disable-vfp            disable VFP optimizations
 447   --disable-neon           disable NEON optimizations
 448   --disable-inline-asm     disable use of inline assembly
 449   --disable-x86asm         disable use of standalone x86 assembly
 450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 452   --disable-msa            disable MSA optimizations
 453   --disable-msa2           disable MSA2 optimizations
 454   --disable-mipsfpu        disable floating point MIPS optimizations
 455   --disable-mmi            disable Loongson SIMD optimizations
 456   --disable-fast-unaligned consider unaligned accesses slow
 457
 458 Developer options (useful when working on FFmpeg itself):
 459   --disable-debug          disable debugging symbols
 460   --enable-debug=LEVEL     set the debug level [$debuglevel]
 461   --disable-optimizations  disable compiler optimizations
 462   --enable-extra-warnings  enable more compiler warnings
 463   --disable-stripping      disable stripping of executables and shared libraries
 464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 465                            2 causes a slowdown at runtime.
 466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 468                            leaks and errors, using the specified valgrind binary.
 469                            Cannot be combined with --target-exec
 470   --enable-ftrapv          Trap arithmetic overflows
 471   --samples=PATH           location of test samples for FATE, if not set use
 472                            \$FATE_SAMPLES at make invocation time.
 473   --enable-neon-clobber-test check NEON registers for clobbering (should be
 474                            used only for debugging purposes)
 475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 476                            should be used only for debugging purposes)
 477   --enable-random          randomly enable/disable components
 478   --disable-random
 479   --enable-random=LIST     randomly enable/disable specific components or
 480   --disable-random=LIST    component groups. LIST is a comma-separated list
 481                            of NAME[:PROB] entries where NAME is a component
 482                            (group) and PROB the probability associated with
 483                            NAME (default 0.5).
 484   --random-seed=VALUE      seed value for --enable/disable-random
 485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 486                            (only applies to --disable-optimizations builds)
 487   --enable-ossfuzz         Enable building fuzzer tool
 488   --libfuzzer=PATH         path to libfuzzer
 489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 490                            in the name) of tests whose result is ignored
 491   --enable-linux-perf      enable Linux Performance Monitor API
 492   --disable-large-tests    disable tests that use a large amount of memory
 493
 494 NOTE: Object files are built at the place where configure is launched.
 495 EOF
 496   exit 0
 497 }
 498
 499 if test -t 1 && which tput >/dev/null 2>&1; then
 500     ncolors=$(tput colors)
 501     if test -n "$ncolors" && test $ncolors -ge 8; then
 502         bold_color=$(tput bold)
 503         warn_color=$(tput setaf 3)
 504         error_color=$(tput setaf 1)
 505         reset_color=$(tput sgr0)
 506     fi
 507     # 72 used instead of 80 since that's the default of pr
 508     ncols=$(tput cols)
 509 fi
 510 : ${ncols:=72}
 511
 512 log(){
 513     echo "$@" >> $logfile
 514 }
 515
 516 log_file(){
 517     log BEGIN "$1"
 518     log_file_i=1
 519     while IFS= read -r log_file_line; do
 520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 521         log_file_i=$(($log_file_i+1))
 522     done < "$1" >> "$logfile"
 523     log END "$1"
 524 }
 525
 526 warn(){
 527     log "WARNING: $*"
 528     WARNINGS="${WARNINGS}WARNING: $*\n"
 529 }
 530
 531 die(){
 532     log "$@"
 533     echo "$error_color$bold_color$@$reset_color"
 534     cat <<EOF
 535
 536 If you think configure made a mistake, make sure you are using the latest
 537 version from Git.  If the latest version fails, report the problem to the
 538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 539 EOF
 540     if disabled logging; then
 541         cat <<EOF
 542 Rerun configure with logging enabled (do not use --disable-logging), and
 543 include the log this produces with your report.
 544 EOF
 545     else
 546         cat <<EOF
 547 Include the log file "$logfile" produced by configure as this will help
 548 solve the problem.
 549 EOF
 550     fi
 551     exit 1
 552 }
 553
 554 # Avoid locale weirdness, besides we really just want to translate ASCII.
 555 toupper(){
 556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 557 }
 558
 559 tolower(){
 560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 561 }
 562
 563 c_escape(){
 564     echo "$*" | sed 's/["\\]/\\\0/g'
 565 }
 566
 567 sh_quote(){
 568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 570     echo "$v"
 571 }
 572
 573 cleanws(){
 574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 575 }
 576
 577 filter(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 filter_out(){
 586     pat=$1
 587     shift
 588     for v; do
 589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 590     done
 591 }
 592
 593 map(){
 594     m=$1
 595     shift
 596     for v; do eval $m; done
 597 }
 598
 599 add_suffix(){
 600     suffix=$1
 601     shift
 602     for v; do echo ${v}${suffix}; done
 603 }
 604
 605 remove_suffix(){
 606     suffix=$1
 607     shift
 608     for v; do echo ${v%$suffix}; done
 609 }
 610
 611 set_all(){
 612     value=$1
 613     shift
 614     for var in $*; do
 615         eval $var=$value
 616     done
 617 }
 618
 619 set_weak(){
 620     value=$1
 621     shift
 622     for var; do
 623         eval : \${$var:=$value}
 624     done
 625 }
 626
 627 sanitize_var_name(){
 628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 629 }
 630
 631 set_sanitized(){
 632     var=$1
 633     shift
 634     eval $(sanitize_var_name "$var")='$*'
 635 }
 636
 637 get_sanitized(){
 638     eval echo \$$(sanitize_var_name "$1")
 639 }
 640
 641 pushvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:=0}
 644         eval ${pvar}_${level}="\$$pvar"
 645         eval ${pvar}_level=$(($level+1))
 646     done
 647 }
 648
 649 popvar(){
 650     for pvar in $*; do
 651         eval level=\${${pvar}_level:-0}
 652         test $level = 0 && continue
 653         eval level=$(($level-1))
 654         eval $pvar="\${${pvar}_${level}}"
 655         eval ${pvar}_level=$level
 656         eval unset ${pvar}_${level}
 657     done
 658 }
 659
 660 request(){
 661     for var in $*; do
 662         eval ${var}_requested=yes
 663         eval $var=
 664     done
 665 }
 666
 667 warn_if_gets_disabled(){
 668     for var in $*; do
 669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 670     done
 671 }
 672
 673 enable(){
 674     set_all yes $*
 675 }
 676
 677 disable(){
 678     set_all no $*
 679 }
 680
 681 disable_with_reason(){
 682     disable $1
 683     eval "${1}_disable_reason=\"$2\""
 684     if requested $1; then
 685         die "ERROR: $1 requested, but $2"
 686     fi
 687 }
 688
 689 enable_weak(){
 690     set_weak yes $*
 691 }
 692
 693 disable_weak(){
 694     set_weak no $*
 695 }
 696
 697 enable_sanitized(){
 698     for var; do
 699         enable $(sanitize_var_name $var)
 700     done
 701 }
 702
 703 disable_sanitized(){
 704     for var; do
 705         disable $(sanitize_var_name $var)
 706     done
 707 }
 708
 709 do_enable_deep(){
 710     for var; do
 711         enabled $var && continue
 712         set -- $var
 713         eval enable_deep \$${var}_select
 714         var=$1
 715         eval enable_deep_weak \$${var}_suggest
 716     done
 717 }
 718
 719 enable_deep(){
 720     do_enable_deep $*
 721     enable $*
 722 }
 723
 724 enable_deep_weak(){
 725     for var; do
 726         disabled $var && continue
 727         set -- $var
 728         do_enable_deep $var
 729         var=$1
 730         enable_weak $var
 731     done
 732 }
 733
 734 requested(){
 735     test "${1#!}" = "$1" && op="=" || op="!="
 736     eval test "x\$${1#!}_requested" $op "xyes"
 737 }
 738
 739 enabled(){
 740     test "${1#!}" = "$1" && op="=" || op="!="
 741     eval test "x\$${1#!}" $op "xyes"
 742 }
 743
 744 disabled(){
 745     test "${1#!}" = "$1" && op="=" || op="!="
 746     eval test "x\$${1#!}" $op "xno"
 747 }
 748
 749 enabled_all(){
 750     for opt; do
 751         enabled $opt || return 1
 752     done
 753 }
 754
 755 disabled_all(){
 756     for opt; do
 757         disabled $opt || return 1
 758     done
 759 }
 760
 761 enabled_any(){
 762     for opt; do
 763         enabled $opt && return 0
 764     done
 765 }
 766
 767 disabled_any(){
 768     for opt; do
 769         disabled $opt && return 0
 770     done
 771     return 1
 772 }
 773
 774 set_default(){
 775     for opt; do
 776         eval : \${$opt:=\$${opt}_default}
 777     done
 778 }
 779
 780 is_in(){
 781     value=$1
 782     shift
 783     for var in $*; do
 784         [ $var = $value ] && return 0
 785     done
 786     return 1
 787 }
 788
 789 # The cfg loop is very hot (several thousands iterations), and in bash also
 790 # potentialy quite slow. Try to abort the iterations early, preferably without
 791 # calling functions. 70%+ of the time cfg is already done or without deps.
 792 check_deps(){
 793     for cfg; do
 794         eval [ x\$${cfg}_checking = xdone ] && continue
 795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 796
 797         eval "
 798         dep_all=\$${cfg}_deps
 799         dep_any=\$${cfg}_deps_any
 800         dep_con=\$${cfg}_conflict
 801         dep_sel=\$${cfg}_select
 802         dep_sgs=\$${cfg}_suggest
 803         dep_ifa=\$${cfg}_if
 804         dep_ifn=\$${cfg}_if_any
 805         "
 806
 807         # most of the time here $cfg has no deps - avoid costly no-op work
 808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 809             eval ${cfg}_checking=inprogress
 810
 811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 814
 815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 821
 822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 823
 824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 825                 # filter out library deps, these do not belong in extralibs
 826                 is_in $dep $LIBRARY_LIST && continue
 827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 828             done
 829         fi
 830
 831         eval ${cfg}_checking=done
 832     done
 833 }
 834
 835 print_config(){
 836     pfx=$1
 837     files=$2
 838     shift 2
 839     map 'eval echo "$v \${$v:-no}"' "$@" |
 840     awk "BEGIN { split(\"$files\", files) }
 841         {
 842             c = \"$pfx\" toupper(\$1);
 843             v = \$2;
 844             sub(/yes/, 1, v);
 845             sub(/no/,  0, v);
 846             for (f in files) {
 847                 file = files[f];
 848                 if (file ~ /\\.h\$/) {
 849                     printf(\"#define %s %d\\n\", c, v) >>file;
 850                 } else if (file ~ /\\.asm\$/) {
 851                     printf(\"%%define %s %d\\n\", c, v) >>file;
 852                 } else if (file ~ /\\.mak\$/) {
 853                     n = -v ? \"\" : \"!\";
 854                     printf(\"%s%s=yes\\n\", n, c) >>file;
 855                 } else if (file ~ /\\.texi\$/) {
 856                     pre = -v ? \"\" : \"@c \";
 857                     yesno = \$2;
 858                     c2 = tolower(c);
 859                     gsub(/_/, \"-\", c2);
 860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 861                 }
 862             }
 863         }"
 864 }
 865
 866 print_enabled(){
 867     suf=$1
 868     shift
 869     for v; do
 870         enabled $v && printf "%s\n" ${v%$suf}
 871     done
 872 }
 873
 874 append(){
 875     var=$1
 876     shift
 877     eval "$var=\"\$$var $*\""
 878 }
 879
 880 prepend(){
 881     var=$1
 882     shift
 883     eval "$var=\"$* \$$var\""
 884 }
 885
 886 reverse () {
 887     eval '
 888         reverse_out=
 889         for v in $'$1'; do
 890             reverse_out="$v $reverse_out"
 891         done
 892         '$1'=$reverse_out
 893     '
 894 }
 895
 896 # keeps the last occurence of each non-unique item
 897 unique(){
 898     unique_out=
 899     eval unique_in=\$$1
 900     reverse unique_in
 901     for v in $unique_in; do
 902         # " $unique_out" +space such that every item is surrounded with spaces
 903         case " $unique_out" in *" $v "*) continue; esac  # already in list
 904         unique_out="$unique_out$v "
 905     done
 906     reverse unique_out
 907     eval $1=\$unique_out
 908 }
 909
 910 resolve(){
 911     resolve_out=
 912     eval resolve_in=\$$1
 913     for v in $resolve_in; do
 914         eval 'resolve_out="$resolve_out$'$v' "'
 915     done
 916     eval $1=\$resolve_out
 917 }
 918
 919 add_cppflags(){
 920     append CPPFLAGS "$@"
 921 }
 922
 923 add_cflags(){
 924     append CFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_cflags_headers(){
 928     append CFLAGS_HEADERS $($cflags_filter "$@")
 929 }
 930
 931 add_cxxflags(){
 932     append CXXFLAGS $($cflags_filter "$@")
 933 }
 934
 935 add_objcflags(){
 936     append OBJCFLAGS $($objcflags_filter "$@")
 937 }
 938
 939 add_asflags(){
 940     append ASFLAGS $($asflags_filter "$@")
 941 }
 942
 943 add_ldflags(){
 944     append LDFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldexeflags(){
 948     append LDEXEFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_ldsoflags(){
 952     append LDSOFLAGS $($ldflags_filter "$@")
 953 }
 954
 955 add_extralibs(){
 956     prepend extralibs $($ldflags_filter "$@")
 957 }
 958
 959 add_stripflags(){
 960     append ASMSTRIPFLAGS "$@"
 961 }
 962
 963 add_host_cppflags(){
 964     append host_cppflags "$@"
 965 }
 966
 967 add_host_cflags(){
 968     append host_cflags $($host_cflags_filter "$@")
 969 }
 970
 971 add_host_ldflags(){
 972     append host_ldflags $($host_ldflags_filter "$@")
 973 }
 974
 975 add_compat(){
 976     append compat_objs $1
 977     shift
 978     map 'add_cppflags -D$v' "$@"
 979 }
 980
 981 test_cmd(){
 982     log "$@"
 983     "$@" >> $logfile 2>&1
 984 }
 985
 986 test_stat(){
 987     log test_stat "$@"
 988     stat "$1" >> $logfile 2>&1
 989 }
 990
 991 cc_e(){
 992     eval printf '%s\\n' $CC_E
 993 }
 994
 995 cc_o(){
 996     eval printf '%s\\n' $CC_O
 997 }
 998
 999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libv4l2
1815     libvmaf
1816     libvorbis
1817     libvpx
1818     libwavpack
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_perf_event_h
2129     machine_ioctl_bt848_h
2130     machine_ioctl_meteor_h
2131     malloc_h
2132     opencv2_core_core_c_h
2133     OpenGL_gl3_h
2134     poll_h
2135     sys_param_h
2136     sys_resource_h
2137     sys_select_h
2138     sys_soundcard_h
2139     sys_time_h
2140     sys_un_h
2141     sys_videoio_h
2142     termios_h
2143     udplite_h
2144     unistd_h
2145     valgrind_valgrind_h
2146     windows_h
2147     winsock2_h
2148 "
2149
2150 INTRINSICS_LIST="
2151     intrinsics_neon
2152 "
2153
2154 COMPLEX_FUNCS="
2155     cabs
2156     cexp
2157 "
2158
2159 MATH_FUNCS="
2160     atanf
2161     atan2f
2162     cbrt
2163     cbrtf
2164     copysign
2165     cosf
2166     erf
2167     exp2
2168     exp2f
2169     expf
2170     hypot
2171     isfinite
2172     isinf
2173     isnan
2174     ldexpf
2175     llrint
2176     llrintf
2177     log2
2178     log2f
2179     log10f
2180     lrint
2181     lrintf
2182     powf
2183     rint
2184     round
2185     roundf
2186     sinf
2187     trunc
2188     truncf
2189 "
2190
2191 SYSTEM_FEATURES="
2192     dos_paths
2193     libc_msvcrt
2194     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2195     section_data_rel_ro
2196     threads
2197     uwp
2198     winrt
2199 "
2200
2201 SYSTEM_FUNCS="
2202     access
2203     aligned_malloc
2204     arc4random
2205     clock_gettime
2206     closesocket
2207     CommandLineToArgvW
2208     fcntl
2209     getaddrinfo
2210     gethrtime
2211     getopt
2212     GetModuleHandle
2213     GetProcessAffinityMask
2214     GetProcessMemoryInfo
2215     GetProcessTimes
2216     getrusage
2217     GetStdHandle
2218     GetSystemTimeAsFileTime
2219     gettimeofday
2220     glob
2221     glXGetProcAddress
2222     gmtime_r
2223     inet_aton
2224     isatty
2225     kbhit
2226     localtime_r
2227     lstat
2228     lzo1x_999_compress
2229     mach_absolute_time
2230     MapViewOfFile
2231     memalign
2232     mkstemp
2233     mmap
2234     mprotect
2235     nanosleep
2236     PeekNamedPipe
2237     posix_memalign
2238     pthread_cancel
2239     sched_getaffinity
2240     SecItemImport
2241     SetConsoleTextAttribute
2242     SetConsoleCtrlHandler
2243     SetDllDirectory
2244     setmode
2245     setrlimit
2246     Sleep
2247     strerror_r
2248     sysconf
2249     sysctl
2250     usleep
2251     UTGetOSTypeFromString
2252     VirtualAlloc
2253     wglGetProcAddress
2254 "
2255
2256 SYSTEM_LIBRARIES="
2257     bcrypt
2258     vaapi_drm
2259     vaapi_x11
2260     vdpau_x11
2261 "
2262
2263 TOOLCHAIN_FEATURES="
2264     as_arch_directive
2265     as_dn_directive
2266     as_fpu_directive
2267     as_func
2268     as_object_arch
2269     asm_mod_q
2270     blocks_extension
2271     ebp_available
2272     ebx_available
2273     gnu_as
2274     gnu_windres
2275     ibm_asm
2276     inline_asm_direct_symbol_refs
2277     inline_asm_labels
2278     inline_asm_nonlocal_labels
2279     pragma_deprecated
2280     rsync_contimeout
2281     symver_asm_label
2282     symver_gnu_asm
2283     vfp_args
2284     xform_asm
2285     xmm_clobbers
2286 "
2287
2288 TYPES_LIST="
2289     kCMVideoCodecType_HEVC
2290     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2291     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2292     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2293     kCVImageBufferTransferFunction_Linear
2294     socklen_t
2295     struct_addrinfo
2296     struct_group_source_req
2297     struct_ip_mreq_source
2298     struct_ipv6_mreq
2299     struct_msghdr_msg_flags
2300     struct_pollfd
2301     struct_rusage_ru_maxrss
2302     struct_sctp_event_subscribe
2303     struct_sockaddr_in6
2304     struct_sockaddr_sa_len
2305     struct_sockaddr_storage
2306     struct_stat_st_mtim_tv_nsec
2307     struct_v4l2_frmivalenum_discrete
2308 "
2309
2310 HAVE_LIST="
2311     $ARCH_EXT_LIST
2312     $(add_suffix _external $ARCH_EXT_LIST)
2313     $(add_suffix _inline   $ARCH_EXT_LIST)
2314     $ARCH_FEATURES
2315     $BUILTIN_LIST
2316     $COMPLEX_FUNCS
2317     $HAVE_LIST_CMDLINE
2318     $HAVE_LIST_PUB
2319     $HEADERS_LIST
2320     $INTRINSICS_LIST
2321     $MATH_FUNCS
2322     $SYSTEM_FEATURES
2323     $SYSTEM_FUNCS
2324     $SYSTEM_LIBRARIES
2325     $THREADS_LIST
2326     $TOOLCHAIN_FEATURES
2327     $TYPES_LIST
2328     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     audio_frame_queue
2348     audiodsp
2349     blockdsp
2350     bswapdsp
2351     cabac
2352     cbs
2353     cbs_av1
2354     cbs_h264
2355     cbs_h265
2356     cbs_jpeg
2357     cbs_mpeg2
2358     cbs_vp9
2359     dirac_parse
2360     dnn
2361     dvprofile
2362     exif
2363     faandct
2364     faanidct
2365     fdctdsp
2366     flacdsp
2367     fmtconvert
2368     frame_thread_encoder
2369     g722dsp
2370     golomb
2371     gplv3
2372     h263dsp
2373     h264chroma
2374     h264dsp
2375     h264parse
2376     h264pred
2377     h264qpel
2378     hevcparse
2379     hpeldsp
2380     huffman
2381     huffyuvdsp
2382     huffyuvencdsp
2383     idctdsp
2384     iirfilter
2385     mdct15
2386     intrax8
2387     iso_media
2388     ividsp
2389     jpegtables
2390     lgplv3
2391     libx262
2392     llauddsp
2393     llviddsp
2394     llvidencdsp
2395     lpc
2396     lzf
2397     me_cmp
2398     mpeg_er
2399     mpegaudio
2400     mpegaudiodsp
2401     mpegaudioheader
2402     mpegvideo
2403     mpegvideoenc
2404     mss34dsp
2405     pixblockdsp
2406     qpeldsp
2407     qsv
2408     qsvdec
2409     qsvenc
2410     qsvvpp
2411     rangecoder
2412     riffdec
2413     riffenc
2414     rtpdec
2415     rtpenc_chain
2416     rv34dsp
2417     scene_sad
2418     sinewin
2419     snappy
2420     srtp
2421     startcode
2422     texturedsp
2423     texturedspenc
2424     tpeldsp
2425     vaapi_1
2426     vaapi_encode
2427     vc1dsp
2428     videodsp
2429     vp3dsp
2430     vp56dsp
2431     vp8dsp
2432     wma_freqs
2433     wmv2dsp
2434 "
2435
2436 CMDLINE_SELECT="
2437     $ARCH_EXT_LIST
2438     $CONFIG_LIST
2439     $HAVE_LIST_CMDLINE
2440     $THREADS_LIST
2441     asm
2442     cross_compile
2443     debug
2444     extra_warnings
2445     logging
2446     lto
2447     optimizations
2448     rpath
2449     stripping
2450 "
2451
2452 PATHS_LIST="
2453     bindir
2454     datadir
2455     docdir
2456     incdir
2457     libdir
2458     mandir
2459     pkgconfigdir
2460     prefix
2461     shlibdir
2462     install_name_dir
2463 "
2464
2465 CMDLINE_SET="
2466     $PATHS_LIST
2467     ar
2468     arch
2469     as
2470     assert_level
2471     build_suffix
2472     cc
2473     objcc
2474     cpu
2475     cross_prefix
2476     custom_allocator
2477     cxx
2478     dep_cc
2479     doxygen
2480     env
2481     extra_version
2482     gas
2483     host_cc
2484     host_cflags
2485     host_extralibs
2486     host_ld
2487     host_ldflags
2488     host_os
2489     ignore_tests
2490     install
2491     ld
2492     ln_s
2493     logfile
2494     malloc_prefix
2495     nm
2496     optflags
2497     nvcc
2498     nvccflags
2499     pkg_config
2500     pkg_config_flags
2501     progs_suffix
2502     random_seed
2503     ranlib
2504     samples
2505     strip
2506     sws_max_filter_size
2507     sysinclude
2508     sysroot
2509     target_exec
2510     target_os
2511     target_path
2512     target_samples
2513     tempprefix
2514     toolchain
2515     valgrind
2516     windres
2517     x86asmexe
2518 "
2519
2520 CMDLINE_APPEND="
2521     extra_cflags
2522     extra_cxxflags
2523     extra_objcflags
2524     host_cppflags
2525 "
2526
2527 # code dependency declarations
2528
2529 # architecture extensions
2530
2531 armv5te_deps="arm"
2532 armv6_deps="arm"
2533 armv6t2_deps="arm"
2534 armv8_deps="aarch64"
2535 neon_deps_any="aarch64 arm"
2536 intrinsics_neon_deps="neon"
2537 vfp_deps_any="aarch64 arm"
2538 vfpv3_deps="vfp"
2539 setend_deps="arm"
2540
2541 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2542
2543 altivec_deps="ppc"
2544 dcbzl_deps="ppc"
2545 ldbrx_deps="ppc"
2546 ppc4xx_deps="ppc"
2547 vsx_deps="altivec"
2548 power8_deps="vsx"
2549
2550 loongson2_deps="mips"
2551 loongson3_deps="mips"
2552 mips32r2_deps="mips"
2553 mips32r5_deps="mips"
2554 mips32r6_deps="mips"
2555 mips64r2_deps="mips"
2556 mips64r6_deps="mips"
2557 mipsfpu_deps="mips"
2558 mipsdsp_deps="mips"
2559 mipsdspr2_deps="mips"
2560 mmi_deps_any="loongson2 loongson3"
2561 msa_deps="mipsfpu"
2562 msa2_deps="msa"
2563
2564 cpunop_deps="i686"
2565 x86_64_select="i686"
2566 x86_64_suggest="fast_cmov"
2567
2568 amd3dnow_deps="mmx"
2569 amd3dnowext_deps="amd3dnow"
2570 i686_deps="x86"
2571 mmx_deps="x86"
2572 mmxext_deps="mmx"
2573 sse_deps="mmxext"
2574 sse2_deps="sse"
2575 sse3_deps="sse2"
2576 ssse3_deps="sse3"
2577 sse4_deps="ssse3"
2578 sse42_deps="sse4"
2579 aesni_deps="sse42"
2580 avx_deps="sse42"
2581 xop_deps="avx"
2582 fma3_deps="avx"
2583 fma4_deps="avx"
2584 avx2_deps="avx"
2585 avx512_deps="avx2"
2586
2587 mmx_external_deps="x86asm"
2588 mmx_inline_deps="inline_asm x86"
2589 mmx_suggest="mmx_external mmx_inline"
2590
2591 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2592     eval dep=\$${ext}_deps
2593     eval ${ext}_external_deps='"${dep}_external"'
2594     eval ${ext}_inline_deps='"${dep}_inline"'
2595     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2596 done
2597
2598 aligned_stack_if_any="aarch64 ppc x86"
2599 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2600 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2601 fast_unaligned_if_any="aarch64 ppc x86"
2602 simd_align_16_if_any="altivec neon sse"
2603 simd_align_32_if_any="avx"
2604 simd_align_64_if_any="avx512"
2605
2606 # system capabilities
2607 linux_perf_deps="linux_perf_event_h"
2608 symver_if_any="symver_asm_label symver_gnu_asm"
2609 valgrind_backtrace_conflict="optimizations"
2610 valgrind_backtrace_deps="valgrind_valgrind_h"
2611
2612 # threading support
2613 atomics_gcc_if="sync_val_compare_and_swap"
2614 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2615 atomics_win32_if="MemoryBarrier"
2616 atomics_native_if_any="$ATOMICS_LIST"
2617 w32threads_deps="atomics_native"
2618 threads_if_any="$THREADS_LIST"
2619
2620 # subsystems
2621 cbs_av1_select="cbs"
2622 cbs_h264_select="cbs"
2623 cbs_h265_select="cbs"
2624 cbs_jpeg_select="cbs"
2625 cbs_mpeg2_select="cbs"
2626 cbs_vp9_select="cbs"
2627 dct_select="rdft"
2628 dirac_parse_select="golomb"
2629 dnn_suggest="libtensorflow libopenvino"
2630 error_resilience_select="me_cmp"
2631 faandct_deps="faan"
2632 faandct_select="fdctdsp"
2633 faanidct_deps="faan"
2634 faanidct_select="idctdsp"
2635 h264dsp_select="startcode"
2636 hevcparse_select="golomb"
2637 frame_thread_encoder_deps="encoders threads"
2638 intrax8_select="blockdsp idctdsp"
2639 mdct_select="fft"
2640 mdct15_select="fft"
2641 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2642 mpeg_er_select="error_resilience"
2643 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2644 mpegaudiodsp_select="dct"
2645 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2646 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2647 vc1dsp_select="h264chroma qpeldsp startcode"
2648 rdft_select="fft"
2649
2650 # decoders / encoders
2651 aac_decoder_select="adts_header mdct15 mdct sinewin"
2652 aac_fixed_decoder_select="adts_header mdct sinewin"
2653 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2654 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2655 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2656 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2657 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2658 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2659 acelp_kelvin_decoder_select="audiodsp"
2660 adpcm_g722_decoder_select="g722dsp"
2661 adpcm_g722_encoder_select="g722dsp"
2662 aic_decoder_select="golomb idctdsp"
2663 alac_encoder_select="lpc"
2664 als_decoder_select="bswapdsp"
2665 amrnb_decoder_select="lsp"
2666 amrwb_decoder_select="lsp"
2667 amv_decoder_select="sp5x_decoder exif"
2668 amv_encoder_select="jpegtables mpegvideoenc"
2669 ape_decoder_select="bswapdsp llauddsp"
2670 apng_decoder_deps="zlib"
2671 apng_encoder_deps="zlib"
2672 apng_encoder_select="llvidencdsp"
2673 aptx_decoder_select="audio_frame_queue"
2674 aptx_encoder_select="audio_frame_queue"
2675 aptx_hd_decoder_select="audio_frame_queue"
2676 aptx_hd_encoder_select="audio_frame_queue"
2677 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2678 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2679 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 atrac1_decoder_select="mdct sinewin"
2682 atrac3_decoder_select="mdct"
2683 atrac3al_decoder_select="mdct"
2684 atrac3p_decoder_select="mdct sinewin"
2685 atrac3pal_decoder_select="mdct sinewin"
2686 atrac9_decoder_select="mdct"
2687 avrn_decoder_select="exif jpegtables"
2688 bink_decoder_select="blockdsp hpeldsp"
2689 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2690 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2691 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2692 clearvideo_decoder_select="idctdsp"
2693 cllc_decoder_select="bswapdsp"
2694 comfortnoise_encoder_select="lpc"
2695 cook_decoder_select="audiodsp mdct sinewin"
2696 cscd_decoder_select="lzo"
2697 cscd_decoder_suggest="zlib"
2698 dca_decoder_select="mdct"
2699 dca_encoder_select="mdct"
2700 dds_decoder_select="texturedsp"
2701 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2702 dnxhd_decoder_select="blockdsp idctdsp"
2703 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2704 dolby_e_decoder_select="mdct"
2705 dvvideo_decoder_select="dvprofile idctdsp"
2706 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2707 dxa_decoder_deps="zlib"
2708 dxv_decoder_select="lzf texturedsp"
2709 eac3_decoder_select="ac3_decoder"
2710 eac3_encoder_select="ac3_encoder"
2711 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2712 eatgq_decoder_select="aandcttables"
2713 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2714 exr_decoder_deps="zlib"
2715 ffv1_decoder_select="rangecoder"
2716 ffv1_encoder_select="rangecoder"
2717 ffvhuff_decoder_select="huffyuv_decoder"
2718 ffvhuff_encoder_select="huffyuv_encoder"
2719 fic_decoder_select="golomb"
2720 flac_decoder_select="flacdsp"
2721 flac_encoder_select="bswapdsp flacdsp lpc"
2722 flashsv2_decoder_deps="zlib"
2723 flashsv2_encoder_deps="zlib"
2724 flashsv_decoder_deps="zlib"
2725 flashsv_encoder_deps="zlib"
2726 flv_decoder_select="h263_decoder"
2727 flv_encoder_select="h263_encoder"
2728 fourxm_decoder_select="blockdsp bswapdsp"
2729 fraps_decoder_select="bswapdsp huffman"
2730 g2m_decoder_deps="zlib"
2731 g2m_decoder_select="blockdsp idctdsp jpegtables"
2732 g729_decoder_select="audiodsp"
2733 h261_decoder_select="mpegvideo"
2734 h261_encoder_select="mpegvideoenc"
2735 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2736 h263_encoder_select="h263dsp mpegvideoenc"
2737 h263i_decoder_select="h263_decoder"
2738 h263p_decoder_select="h263_decoder"
2739 h263p_encoder_select="h263_encoder"
2740 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2741 h264_decoder_suggest="error_resilience"
2742 hap_decoder_select="snappy texturedsp"
2743 hap_encoder_deps="libsnappy"
2744 hap_encoder_select="texturedspenc"
2745 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2746 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2747 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2748 hymt_decoder_select="huffyuv_decoder"
2749 iac_decoder_select="imc_decoder"
2750 imc_decoder_select="bswapdsp fft mdct sinewin"
2751 imm4_decoder_select="bswapdsp"
2752 imm5_decoder_select="h264_decoder hevc_decoder"
2753 indeo3_decoder_select="hpeldsp"
2754 indeo4_decoder_select="ividsp"
2755 indeo5_decoder_select="ividsp"
2756 interplay_video_decoder_select="hpeldsp"
2757 jpegls_decoder_select="mjpeg_decoder"
2758 jv_decoder_select="blockdsp"
2759 lagarith_decoder_select="llviddsp"
2760 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2761 lscr_decoder_deps="zlib"
2762 magicyuv_decoder_select="llviddsp"
2763 magicyuv_encoder_select="llvidencdsp"
2764 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2765 metasound_decoder_select="lsp mdct sinewin"
2766 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2767 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2768 mjpeg_encoder_select="jpegtables mpegvideoenc"
2769 mjpegb_decoder_select="mjpeg_decoder"
2770 mlp_decoder_select="mlp_parser"
2771 mlp_encoder_select="lpc audio_frame_queue"
2772 motionpixels_decoder_select="bswapdsp"
2773 mp1_decoder_select="mpegaudio"
2774 mp1float_decoder_select="mpegaudio"
2775 mp2_decoder_select="mpegaudio"
2776 mp2float_decoder_select="mpegaudio"
2777 mp3_decoder_select="mpegaudio"
2778 mp3adu_decoder_select="mpegaudio"
2779 mp3adufloat_decoder_select="mpegaudio"
2780 mp3float_decoder_select="mpegaudio"
2781 mp3on4_decoder_select="mpegaudio"
2782 mp3on4float_decoder_select="mpegaudio"
2783 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2784 mpc8_decoder_select="mpegaudiodsp"
2785 mpegvideo_decoder_select="mpegvideo"
2786 mpeg1video_decoder_select="mpegvideo"
2787 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2788 mpeg2video_decoder_select="mpegvideo"
2789 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2790 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2791 mpeg4_encoder_select="h263_encoder"
2792 msa1_decoder_select="mss34dsp"
2793 mscc_decoder_deps="zlib"
2794 msmpeg4v1_decoder_select="h263_decoder"
2795 msmpeg4v2_decoder_select="h263_decoder"
2796 msmpeg4v2_encoder_select="h263_encoder"
2797 msmpeg4v3_decoder_select="h263_decoder"
2798 msmpeg4v3_encoder_select="h263_encoder"
2799 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2800 mts2_decoder_select="mss34dsp"
2801 mv30_decoder_select="aandcttables blockdsp"
2802 mvha_decoder_deps="zlib"
2803 mvha_decoder_select="llviddsp"
2804 mwsc_decoder_deps="zlib"
2805 mxpeg_decoder_select="mjpeg_decoder"
2806 nellymoser_decoder_select="mdct sinewin"
2807 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2808 notchlc_decoder_select="lzf"
2809 nuv_decoder_select="idctdsp lzo"
2810 on2avc_decoder_select="mdct"
2811 opus_decoder_deps="swresample"
2812 opus_decoder_select="mdct15"
2813 opus_encoder_select="audio_frame_queue mdct15"
2814 png_decoder_deps="zlib"
2815 png_encoder_deps="zlib"
2816 png_encoder_select="llvidencdsp"
2817 prores_decoder_select="blockdsp idctdsp"
2818 prores_encoder_select="fdctdsp"
2819 qcelp_decoder_select="lsp"
2820 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2821 ra_144_decoder_select="audiodsp"
2822 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2823 ralf_decoder_select="golomb"
2824 rasc_decoder_deps="zlib"
2825 rawvideo_decoder_select="bswapdsp"
2826 rscc_decoder_deps="zlib"
2827 rtjpeg_decoder_select="me_cmp"
2828 rv10_decoder_select="h263_decoder"
2829 rv10_encoder_select="h263_encoder"
2830 rv20_decoder_select="h263_decoder"
2831 rv20_encoder_select="h263_encoder"
2832 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2833 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2834 screenpresso_decoder_deps="zlib"
2835 shorten_decoder_select="bswapdsp"
2836 sipr_decoder_select="lsp"
2837 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2838 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2839 sonic_decoder_select="golomb rangecoder"
2840 sonic_encoder_select="golomb rangecoder"
2841 sonic_ls_encoder_select="golomb rangecoder"
2842 sp5x_decoder_select="mjpeg_decoder"
2843 speedhq_decoder_select="mpegvideo"
2844 srgc_decoder_deps="zlib"
2845 svq1_decoder_select="hpeldsp"
2846 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2847 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2848 svq3_decoder_suggest="zlib"
2849 tak_decoder_select="audiodsp"
2850 tdsc_decoder_deps="zlib"
2851 tdsc_decoder_select="mjpeg_decoder"
2852 theora_decoder_select="vp3_decoder"
2853 thp_decoder_select="mjpeg_decoder"
2854 tiff_decoder_select="mjpeg_decoder"
2855 tiff_decoder_suggest="zlib lzma"
2856 tiff_encoder_suggest="zlib"
2857 truehd_decoder_select="mlp_parser"
2858 truehd_encoder_select="lpc audio_frame_queue"
2859 truemotion2_decoder_select="bswapdsp"
2860 truespeech_decoder_select="bswapdsp"
2861 tscc_decoder_deps="zlib"
2862 twinvq_decoder_select="mdct lsp sinewin"
2863 txd_decoder_select="texturedsp"
2864 utvideo_decoder_select="bswapdsp llviddsp"
2865 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2866 vble_decoder_select="llviddsp"
2867 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2868 vc1image_decoder_select="vc1_decoder"
2869 vorbis_decoder_select="mdct"
2870 vorbis_encoder_select="audio_frame_queue mdct"
2871 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2872 vp4_decoder_select="vp3_decoder"
2873 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2874 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2875 vp6a_decoder_select="vp6_decoder"
2876 vp6f_decoder_select="vp6_decoder"
2877 vp7_decoder_select="h264pred videodsp vp8dsp"
2878 vp8_decoder_select="h264pred videodsp vp8dsp"
2879 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2880 wcmv_decoder_deps="zlib"
2881 webp_decoder_select="vp8_decoder exif"
2882 wmalossless_decoder_select="llauddsp"
2883 wmapro_decoder_select="mdct sinewin wma_freqs"
2884 wmav1_decoder_select="mdct sinewin wma_freqs"
2885 wmav1_encoder_select="mdct sinewin wma_freqs"
2886 wmav2_decoder_select="mdct sinewin wma_freqs"
2887 wmav2_encoder_select="mdct sinewin wma_freqs"
2888 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2889 wmv1_decoder_select="h263_decoder"
2890 wmv1_encoder_select="h263_encoder"
2891 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2892 wmv2_encoder_select="h263_encoder wmv2dsp"
2893 wmv3_decoder_select="vc1_decoder"
2894 wmv3image_decoder_select="wmv3_decoder"
2895 xma1_decoder_select="wmapro_decoder"
2896 xma2_decoder_select="wmapro_decoder"
2897 ylc_decoder_select="bswapdsp"
2898 zerocodec_decoder_deps="zlib"
2899 zlib_decoder_deps="zlib"
2900 zlib_encoder_deps="zlib"
2901 zmbv_decoder_deps="zlib"
2902 zmbv_encoder_deps="zlib"
2903
2904 # hardware accelerators
2905 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2906 cuda_deps="ffnvcodec"
2907 cuvid_deps="ffnvcodec"
2908 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2909 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2910 ffnvcodec_deps_any="libdl LoadLibrary"
2911 nvdec_deps="ffnvcodec"
2912 vaapi_x11_deps="xlib"
2913 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2914 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2915 xvmc_deps="X11_extensions_XvMClib_h"
2916
2917 h263_vaapi_hwaccel_deps="vaapi"
2918 h263_vaapi_hwaccel_select="h263_decoder"
2919 h263_videotoolbox_hwaccel_deps="videotoolbox"
2920 h263_videotoolbox_hwaccel_select="h263_decoder"
2921 h264_d3d11va_hwaccel_deps="d3d11va"
2922 h264_d3d11va_hwaccel_select="h264_decoder"
2923 h264_d3d11va2_hwaccel_deps="d3d11va"
2924 h264_d3d11va2_hwaccel_select="h264_decoder"
2925 h264_dxva2_hwaccel_deps="dxva2"
2926 h264_dxva2_hwaccel_select="h264_decoder"
2927 h264_nvdec_hwaccel_deps="nvdec"
2928 h264_nvdec_hwaccel_select="h264_decoder"
2929 h264_vaapi_hwaccel_deps="vaapi"
2930 h264_vaapi_hwaccel_select="h264_decoder"
2931 h264_vdpau_hwaccel_deps="vdpau"
2932 h264_vdpau_hwaccel_select="h264_decoder"
2933 h264_videotoolbox_hwaccel_deps="videotoolbox"
2934 h264_videotoolbox_hwaccel_select="h264_decoder"
2935 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2936 hevc_d3d11va_hwaccel_select="hevc_decoder"
2937 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2938 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2939 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2940 hevc_dxva2_hwaccel_select="hevc_decoder"
2941 hevc_nvdec_hwaccel_deps="nvdec"
2942 hevc_nvdec_hwaccel_select="hevc_decoder"
2943 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2944 hevc_vaapi_hwaccel_select="hevc_decoder"
2945 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2946 hevc_vdpau_hwaccel_select="hevc_decoder"
2947 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2948 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2949 mjpeg_nvdec_hwaccel_deps="nvdec"
2950 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2951 mjpeg_vaapi_hwaccel_deps="vaapi"
2952 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2953 mpeg_xvmc_hwaccel_deps="xvmc"
2954 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2955 mpeg1_nvdec_hwaccel_deps="nvdec"
2956 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2957 mpeg1_vdpau_hwaccel_deps="vdpau"
2958 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2959 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2960 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2961 mpeg1_xvmc_hwaccel_deps="xvmc"
2962 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2963 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2964 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2965 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2966 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_dxva2_hwaccel_deps="dxva2"
2968 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2969 mpeg2_nvdec_hwaccel_deps="nvdec"
2970 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2971 mpeg2_vaapi_hwaccel_deps="vaapi"
2972 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2973 mpeg2_vdpau_hwaccel_deps="vdpau"
2974 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2975 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2976 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2977 mpeg2_xvmc_hwaccel_deps="xvmc"
2978 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2979 mpeg4_nvdec_hwaccel_deps="nvdec"
2980 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2981 mpeg4_vaapi_hwaccel_deps="vaapi"
2982 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2983 mpeg4_vdpau_hwaccel_deps="vdpau"
2984 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2985 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2986 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2987 vc1_d3d11va_hwaccel_deps="d3d11va"
2988 vc1_d3d11va_hwaccel_select="vc1_decoder"
2989 vc1_d3d11va2_hwaccel_deps="d3d11va"
2990 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2991 vc1_dxva2_hwaccel_deps="dxva2"
2992 vc1_dxva2_hwaccel_select="vc1_decoder"
2993 vc1_nvdec_hwaccel_deps="nvdec"
2994 vc1_nvdec_hwaccel_select="vc1_decoder"
2995 vc1_vaapi_hwaccel_deps="vaapi"
2996 vc1_vaapi_hwaccel_select="vc1_decoder"
2997 vc1_vdpau_hwaccel_deps="vdpau"
2998 vc1_vdpau_hwaccel_select="vc1_decoder"
2999 vp8_nvdec_hwaccel_deps="nvdec"
3000 vp8_nvdec_hwaccel_select="vp8_decoder"
3001 vp8_vaapi_hwaccel_deps="vaapi"
3002 vp8_vaapi_hwaccel_select="vp8_decoder"
3003 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3004 vp9_d3d11va_hwaccel_select="vp9_decoder"
3005 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3006 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3007 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3008 vp9_dxva2_hwaccel_select="vp9_decoder"
3009 vp9_nvdec_hwaccel_deps="nvdec"
3010 vp9_nvdec_hwaccel_select="vp9_decoder"
3011 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3012 vp9_vaapi_hwaccel_select="vp9_decoder"
3013 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3014 vp9_vdpau_hwaccel_select="vp9_decoder"
3015 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3016 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3017 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3018 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3019 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3020 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3021
3022 # hardware-accelerated codecs
3023 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3024 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3025 omx_deps="libdl pthreads"
3026 omx_rpi_select="omx"
3027 qsv_deps="libmfx"
3028 qsvdec_select="qsv"
3029 qsvenc_select="qsv"
3030 qsvvpp_select="qsv"
3031 vaapi_encode_deps="vaapi"
3032 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3033
3034 hwupload_cuda_filter_deps="ffnvcodec"
3035 scale_npp_filter_deps="ffnvcodec libnpp"
3036 scale_cuda_filter_deps="ffnvcodec"
3037 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3038 thumbnail_cuda_filter_deps="ffnvcodec"
3039 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3040 transpose_npp_filter_deps="ffnvcodec libnpp"
3041 overlay_cuda_filter_deps="ffnvcodec"
3042 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3043
3044 amf_deps_any="libdl LoadLibrary"
3045 nvenc_deps="ffnvcodec"
3046 nvenc_deps_any="libdl LoadLibrary"
3047 nvenc_encoder_deps="nvenc"
3048
3049 aac_mf_encoder_deps="mediafoundation"
3050 ac3_mf_encoder_deps="mediafoundation"
3051 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3052 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3053 h264_amf_encoder_deps="amf"
3054 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3055 h264_cuvid_decoder_deps="cuvid"
3056 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3057 h264_mediacodec_decoder_deps="mediacodec"
3058 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3059 h264_mf_encoder_deps="mediafoundation"
3060 h264_mmal_decoder_deps="mmal"
3061 h264_nvenc_encoder_deps="nvenc"
3062 h264_omx_encoder_deps="omx"
3063 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3064 h264_qsv_encoder_select="qsvenc"
3065 h264_rkmpp_decoder_deps="rkmpp"
3066 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3067 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3068 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3069 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3070 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3071 hevc_amf_encoder_deps="amf"
3072 hevc_cuvid_decoder_deps="cuvid"
3073 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3074 hevc_mediacodec_decoder_deps="mediacodec"
3075 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3076 hevc_mf_encoder_deps="mediafoundation"
3077 hevc_nvenc_encoder_deps="nvenc"
3078 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3079 hevc_qsv_encoder_select="hevcparse qsvenc"
3080 hevc_rkmpp_decoder_deps="rkmpp"
3081 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3082 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3083 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3084 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3085 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3086 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3087 mjpeg_cuvid_decoder_deps="cuvid"
3088 mjpeg_qsv_decoder_select="qsvdec"
3089 mjpeg_qsv_encoder_deps="libmfx"
3090 mjpeg_qsv_encoder_select="qsvenc"
3091 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3092 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3093 mp3_mf_encoder_deps="mediafoundation"
3094 mpeg1_cuvid_decoder_deps="cuvid"
3095 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3096 mpeg2_crystalhd_decoder_select="crystalhd"
3097 mpeg2_cuvid_decoder_deps="cuvid"
3098 mpeg2_mmal_decoder_deps="mmal"
3099 mpeg2_mediacodec_decoder_deps="mediacodec"
3100 mpeg2_qsv_decoder_select="qsvdec"
3101 mpeg2_qsv_encoder_select="qsvenc"
3102 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3103 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3104 mpeg4_crystalhd_decoder_select="crystalhd"
3105 mpeg4_cuvid_decoder_deps="cuvid"
3106 mpeg4_mediacodec_decoder_deps="mediacodec"
3107 mpeg4_mmal_decoder_deps="mmal"
3108 mpeg4_omx_encoder_deps="omx"
3109 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3110 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3111 msmpeg4_crystalhd_decoder_select="crystalhd"
3112 nvenc_h264_encoder_select="h264_nvenc_encoder"
3113 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3114 vc1_crystalhd_decoder_select="crystalhd"
3115 vc1_cuvid_decoder_deps="cuvid"
3116 vc1_mmal_decoder_deps="mmal"
3117 vc1_qsv_decoder_select="qsvdec"
3118 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3119 vp8_cuvid_decoder_deps="cuvid"
3120 vp8_mediacodec_decoder_deps="mediacodec"
3121 vp8_qsv_decoder_select="qsvdec"
3122 vp8_rkmpp_decoder_deps="rkmpp"
3123 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3124 vp8_vaapi_encoder_select="vaapi_encode"
3125 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3126 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3127 vp9_cuvid_decoder_deps="cuvid"
3128 vp9_mediacodec_decoder_deps="mediacodec"
3129 vp9_qsv_decoder_select="qsvdec"
3130 vp9_rkmpp_decoder_deps="rkmpp"
3131 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3132 vp9_vaapi_encoder_select="vaapi_encode"
3133 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3134 vp9_qsv_encoder_select="qsvenc"
3135 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3136 wmv3_crystalhd_decoder_select="crystalhd"
3137
3138 # parsers
3139 aac_parser_select="adts_header"
3140 av1_parser_select="cbs_av1"
3141 h264_parser_select="golomb h264dsp h264parse"
3142 hevc_parser_select="hevcparse"
3143 mpegaudio_parser_select="mpegaudioheader"
3144 mpegvideo_parser_select="mpegvideo"
3145 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3146 vc1_parser_select="vc1dsp"
3147
3148 # bitstream_filters
3149 aac_adtstoasc_bsf_select="adts_header"
3150 av1_frame_merge_bsf_select="cbs_av1"
3151 av1_frame_split_bsf_select="cbs_av1"
3152 av1_metadata_bsf_select="cbs_av1"
3153 eac3_core_bsf_select="ac3_parser"
3154 filter_units_bsf_select="cbs"
3155 h264_metadata_bsf_deps="const_nan"
3156 h264_metadata_bsf_select="cbs_h264"
3157 h264_redundant_pps_bsf_select="cbs_h264"
3158 hevc_metadata_bsf_select="cbs_h265"
3159 mjpeg2jpeg_bsf_select="jpegtables"
3160 mpeg2_metadata_bsf_select="cbs_mpeg2"
3161 trace_headers_bsf_select="cbs"
3162 vp9_metadata_bsf_select="cbs_vp9"
3163
3164 # external libraries
3165 aac_at_decoder_deps="audiotoolbox"
3166 aac_at_decoder_select="aac_adtstoasc_bsf"
3167 ac3_at_decoder_deps="audiotoolbox"
3168 ac3_at_decoder_select="ac3_parser"
3169 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3170 alac_at_decoder_deps="audiotoolbox"
3171 amr_nb_at_decoder_deps="audiotoolbox"
3172 avisynth_deps_any="libdl LoadLibrary"
3173 avisynth_demuxer_deps="avisynth"
3174 avisynth_demuxer_select="riffdec"
3175 eac3_at_decoder_deps="audiotoolbox"
3176 eac3_at_decoder_select="ac3_parser"
3177 gsm_ms_at_decoder_deps="audiotoolbox"
3178 ilbc_at_decoder_deps="audiotoolbox"
3179 mp1_at_decoder_deps="audiotoolbox"
3180 mp2_at_decoder_deps="audiotoolbox"
3181 mp3_at_decoder_deps="audiotoolbox"
3182 mp1_at_decoder_select="mpegaudioheader"
3183 mp2_at_decoder_select="mpegaudioheader"
3184 mp3_at_decoder_select="mpegaudioheader"
3185 pcm_alaw_at_decoder_deps="audiotoolbox"
3186 pcm_mulaw_at_decoder_deps="audiotoolbox"
3187 qdmc_decoder_select="fft"
3188 qdmc_at_decoder_deps="audiotoolbox"
3189 qdm2_at_decoder_deps="audiotoolbox"
3190 aac_at_encoder_deps="audiotoolbox"
3191 aac_at_encoder_select="audio_frame_queue"
3192 alac_at_encoder_deps="audiotoolbox"
3193 alac_at_encoder_select="audio_frame_queue"
3194 ilbc_at_encoder_deps="audiotoolbox"
3195 ilbc_at_encoder_select="audio_frame_queue"
3196 pcm_alaw_at_encoder_deps="audiotoolbox"
3197 pcm_alaw_at_encoder_select="audio_frame_queue"
3198 pcm_mulaw_at_encoder_deps="audiotoolbox"
3199 pcm_mulaw_at_encoder_select="audio_frame_queue"
3200 chromaprint_muxer_deps="chromaprint"
3201 h264_videotoolbox_encoder_deps="pthreads"
3202 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3203 hevc_videotoolbox_encoder_deps="pthreads"
3204 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3205 libaom_av1_decoder_deps="libaom"
3206 libaom_av1_encoder_deps="libaom"
3207 libaom_av1_encoder_select="extract_extradata_bsf"
3208 libaribb24_decoder_deps="libaribb24"
3209 libcelt_decoder_deps="libcelt"
3210 libcodec2_decoder_deps="libcodec2"
3211 libcodec2_encoder_deps="libcodec2"
3212 libdav1d_decoder_deps="libdav1d"
3213 libdavs2_decoder_deps="libdavs2"
3214 libfdk_aac_decoder_deps="libfdk_aac"
3215 libfdk_aac_encoder_deps="libfdk_aac"
3216 libfdk_aac_encoder_select="audio_frame_queue"
3217 libgme_demuxer_deps="libgme"
3218 libgsm_decoder_deps="libgsm"
3219 libgsm_encoder_deps="libgsm"
3220 libgsm_ms_decoder_deps="libgsm"
3221 libgsm_ms_encoder_deps="libgsm"
3222 libilbc_decoder_deps="libilbc"
3223 libilbc_encoder_deps="libilbc"
3224 libkvazaar_encoder_deps="libkvazaar"
3225 libmodplug_demuxer_deps="libmodplug"
3226 libmp3lame_encoder_deps="libmp3lame"
3227 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3228 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3229 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3230 libopencore_amrnb_encoder_select="audio_frame_queue"
3231 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3232 libopenh264_decoder_deps="libopenh264"
3233 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3234 libopenh264_encoder_deps="libopenh264"
3235 libopenjpeg_decoder_deps="libopenjpeg"
3236 libopenjpeg_encoder_deps="libopenjpeg"
3237 libopenmpt_demuxer_deps="libopenmpt"
3238 libopus_decoder_deps="libopus"
3239 libopus_encoder_deps="libopus"
3240 libopus_encoder_select="audio_frame_queue"
3241 librav1e_encoder_deps="librav1e"
3242 librav1e_encoder_select="extract_extradata_bsf"
3243 librsvg_decoder_deps="librsvg"
3244 libshine_encoder_deps="libshine"
3245 libshine_encoder_select="audio_frame_queue"
3246 libspeex_decoder_deps="libspeex"
3247 libspeex_encoder_deps="libspeex"
3248 libspeex_encoder_select="audio_frame_queue"
3249 libsvtav1_encoder_deps="libsvtav1"
3250 libtheora_encoder_deps="libtheora"
3251 libtwolame_encoder_deps="libtwolame"
3252 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3253 libvorbis_decoder_deps="libvorbis"
3254 libvorbis_encoder_deps="libvorbis libvorbisenc"
3255 libvorbis_encoder_select="audio_frame_queue"
3256 libvpx_vp8_decoder_deps="libvpx"
3257 libvpx_vp8_encoder_deps="libvpx"
3258 libvpx_vp9_decoder_deps="libvpx"
3259 libvpx_vp9_encoder_deps="libvpx"
3260 libwavpack_encoder_deps="libwavpack"
3261 libwavpack_encoder_select="audio_frame_queue"
3262 libwebp_encoder_deps="libwebp"
3263 libwebp_anim_encoder_deps="libwebp"
3264 libx262_encoder_deps="libx262"
3265 libx264_encoder_deps="libx264"
3266 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3267 libx264rgb_encoder_select="libx264_encoder"
3268 libx265_encoder_deps="libx265"
3269 libxavs_encoder_deps="libxavs"
3270 libxavs2_encoder_deps="libxavs2"
3271 libxvid_encoder_deps="libxvid"
3272 libzvbi_teletext_decoder_deps="libzvbi"
3273 vapoursynth_demuxer_deps="vapoursynth"
3274 videotoolbox_suggest="coreservices"
3275 videotoolbox_deps="corefoundation coremedia corevideo"
3276 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3277
3278 # demuxers / muxers
3279 ac3_demuxer_select="ac3_parser"
3280 act_demuxer_select="riffdec"
3281 aiff_muxer_select="iso_media"
3282 asf_demuxer_select="riffdec"
3283 asf_o_demuxer_select="riffdec"
3284 asf_muxer_select="riffenc"
3285 asf_stream_muxer_select="asf_muxer"
3286 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3287 avi_demuxer_select="iso_media riffdec exif"
3288 avi_muxer_select="riffenc"
3289 caf_demuxer_select="iso_media riffdec"
3290 caf_muxer_select="iso_media"
3291 dash_muxer_select="mp4_muxer"
3292 dash_demuxer_deps="libxml2"
3293 dirac_demuxer_select="dirac_parser"
3294 dts_demuxer_select="dca_parser"
3295 dtshd_demuxer_select="dca_parser"
3296 dv_demuxer_select="dvprofile"
3297 dv_muxer_select="dvprofile"
3298 dxa_demuxer_select="riffdec"
3299 eac3_demuxer_select="ac3_parser"
3300 f4v_muxer_select="mov_muxer"
3301 fifo_muxer_deps="threads"
3302 flac_demuxer_select="flac_parser"
3303 flv_muxer_select="aac_adtstoasc_bsf"
3304 gxf_muxer_select="pcm_rechunk_bsf"
3305 hds_muxer_select="flv_muxer"
3306 hls_muxer_select="mpegts_muxer"
3307 hls_muxer_suggest="gcrypt openssl"
3308 image2_alias_pix_demuxer_select="image2_demuxer"
3309 image2_brender_pix_demuxer_select="image2_demuxer"
3310 ipod_muxer_select="mov_muxer"
3311 ismv_muxer_select="mov_muxer"
3312 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3313 latm_muxer_select="aac_adtstoasc_bsf"
3314 matroska_audio_muxer_select="matroska_muxer"
3315 matroska_demuxer_select="iso_media riffdec"
3316 matroska_demuxer_suggest="bzlib lzo zlib"
3317 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3318 mlp_demuxer_select="mlp_parser"
3319 mmf_muxer_select="riffenc"
3320 mov_demuxer_select="iso_media riffdec"
3321 mov_demuxer_suggest="zlib"
3322 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3323 mp3_demuxer_select="mpegaudio_parser"
3324 mp3_muxer_select="mpegaudioheader"
3325 mp4_muxer_select="mov_muxer"
3326 mpegts_demuxer_select="iso_media"
3327 mpegts_muxer_select="adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3328 mpegtsraw_demuxer_select="mpegts_demuxer"
3329 mxf_muxer_select="golomb pcm_rechunk_bsf"
3330 mxf_d10_muxer_select="mxf_muxer"
3331 mxf_opatom_muxer_select="mxf_muxer"
3332 nut_muxer_select="riffenc"
3333 nuv_demuxer_select="riffdec"
3334 oga_muxer_select="ogg_muxer"
3335 ogg_demuxer_select="dirac_parse"
3336 ogv_muxer_select="ogg_muxer"
3337 opus_muxer_select="ogg_muxer"
3338 psp_muxer_select="mov_muxer"
3339 rtp_demuxer_select="sdp_demuxer"
3340 rtp_muxer_select="golomb jpegtables"
3341 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3342 rtsp_demuxer_select="http_protocol rtpdec"
3343 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3344 sap_demuxer_select="sdp_demuxer"
3345 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3346 sdp_demuxer_select="rtpdec"
3347 smoothstreaming_muxer_select="ismv_muxer"
3348 spdif_demuxer_select="adts_header"
3349 spdif_muxer_select="adts_header"
3350 spx_muxer_select="ogg_muxer"
3351 swf_demuxer_suggest="zlib"
3352 tak_demuxer_select="tak_parser"
3353 truehd_demuxer_select="mlp_parser"
3354 tg2_muxer_select="mov_muxer"
3355 tgp_muxer_select="mov_muxer"
3356 vobsub_demuxer_select="mpegps_demuxer"
3357 w64_demuxer_select="wav_demuxer"
3358 w64_muxer_select="wav_muxer"
3359 wav_demuxer_select="riffdec"
3360 wav_muxer_select="riffenc"
3361 webm_chunk_muxer_select="webm_muxer"
3362 webm_muxer_select="iso_media riffenc"
3363 webm_dash_manifest_demuxer_select="matroska_demuxer"
3364 wtv_demuxer_select="mpegts_demuxer riffdec"
3365 wtv_muxer_select="mpegts_muxer riffenc"
3366 xmv_demuxer_select="riffdec"
3367 xwma_demuxer_select="riffdec"
3368
3369 # indevs / outdevs
3370 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3371 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3372 alsa_indev_deps="alsa"
3373 alsa_outdev_deps="alsa"
3374 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3375 avfoundation_indev_suggest="coregraphics applicationservices"
3376 avfoundation_indev_extralibs="-framework Foundation"
3377 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3378 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3379 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3380 caca_outdev_deps="libcaca"
3381 decklink_deps_any="libdl LoadLibrary"
3382 decklink_indev_deps="decklink threads"
3383 decklink_indev_extralibs="-lstdc++"
3384 decklink_outdev_deps="decklink threads"
3385 decklink_outdev_suggest="libklvanc"
3386 decklink_outdev_extralibs="-lstdc++"
3387 dshow_indev_deps="IBaseFilter"
3388 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3389 fbdev_indev_deps="linux_fb_h"
3390 fbdev_outdev_deps="linux_fb_h"
3391 gdigrab_indev_deps="CreateDIBSection"
3392 gdigrab_indev_extralibs="-lgdi32"
3393 gdigrab_indev_select="bmp_decoder"
3394 iec61883_indev_deps="libiec61883"
3395 jack_indev_deps="libjack"
3396 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3397 kmsgrab_indev_deps="libdrm"
3398 lavfi_indev_deps="avfilter"
3399 libcdio_indev_deps="libcdio"
3400 libdc1394_indev_deps="libdc1394"
3401 openal_indev_deps="openal"
3402 opengl_outdev_deps="opengl"
3403 opengl_outdev_suggest="sdl2"
3404 oss_indev_deps_any="sys_soundcard_h"
3405 oss_outdev_deps_any="sys_soundcard_h"
3406 pulse_indev_deps="libpulse"
3407 pulse_outdev_deps="libpulse"
3408 sdl2_outdev_deps="sdl2"
3409 sndio_indev_deps="sndio"
3410 sndio_outdev_deps="sndio"
3411 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3412 v4l2_indev_suggest="libv4l2"
3413 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3414 v4l2_outdev_suggest="libv4l2"
3415 vfwcap_indev_deps="vfw32 vfwcap_defines"
3416 xcbgrab_indev_deps="libxcb"
3417 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3418 xv_outdev_deps="xlib"
3419
3420 # protocols
3421 async_protocol_deps="threads"
3422 bluray_protocol_deps="libbluray"
3423 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3424 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3425 ffrtmpcrypt_protocol_select="tcp_protocol"
3426 ffrtmphttp_protocol_conflict="librtmp_protocol"
3427 ffrtmphttp_protocol_select="http_protocol"
3428 ftp_protocol_select="tcp_protocol"
3429 gopher_protocol_select="network"
3430 http_protocol_select="tcp_protocol"
3431 http_protocol_suggest="zlib"
3432 httpproxy_protocol_select="tcp_protocol"
3433 httpproxy_protocol_suggest="zlib"
3434 https_protocol_select="tls_protocol"
3435 https_protocol_suggest="zlib"
3436 icecast_protocol_select="http_protocol"
3437 mmsh_protocol_select="http_protocol"
3438 mmst_protocol_select="network"
3439 rtmp_protocol_conflict="librtmp_protocol"
3440 rtmp_protocol_select="tcp_protocol"
3441 rtmp_protocol_suggest="zlib"
3442 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3443 rtmpe_protocol_suggest="zlib"
3444 rtmps_protocol_conflict="librtmp_protocol"
3445 rtmps_protocol_select="tls_protocol"
3446 rtmps_protocol_suggest="zlib"
3447 rtmpt_protocol_select="ffrtmphttp_protocol"
3448 rtmpt_protocol_suggest="zlib"
3449 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3450 rtmpte_protocol_suggest="zlib"
3451 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3452 rtmpts_protocol_suggest="zlib"
3453 rtp_protocol_select="udp_protocol"
3454 schannel_conflict="openssl gnutls libtls mbedtls"
3455 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3456 sctp_protocol_select="network"
3457 securetransport_conflict="openssl gnutls libtls mbedtls"
3458 srtp_protocol_select="rtp_protocol srtp"
3459 tcp_protocol_select="network"
3460 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3461 tls_protocol_select="tcp_protocol"
3462 udp_protocol_select="network"
3463 udplite_protocol_select="network"
3464 unix_protocol_deps="sys_un_h"
3465 unix_protocol_select="network"
3466
3467 # external library protocols
3468 libamqp_protocol_deps="librabbitmq"
3469 libamqp_protocol_select="network"
3470 librtmp_protocol_deps="librtmp"
3471 librtmpe_protocol_deps="librtmp"
3472 librtmps_protocol_deps="librtmp"
3473 librtmpt_protocol_deps="librtmp"
3474 librtmpte_protocol_deps="librtmp"
3475 libsmbclient_protocol_deps="libsmbclient gplv3"
3476 libsrt_protocol_deps="libsrt"
3477 libsrt_protocol_select="network"
3478 libssh_protocol_deps="libssh"
3479 libtls_conflict="openssl gnutls mbedtls"
3480 libzmq_protocol_deps="libzmq"
3481 libzmq_protocol_select="network"
3482
3483 # filters
3484 afftdn_filter_deps="avcodec"
3485 afftdn_filter_select="fft"
3486 afftfilt_filter_deps="avcodec"
3487 afftfilt_filter_select="fft"
3488 afir_filter_deps="avcodec"
3489 afir_filter_select="rdft"
3490 amovie_filter_deps="avcodec avformat"
3491 aresample_filter_deps="swresample"
3492 asr_filter_deps="pocketsphinx"
3493 ass_filter_deps="libass"
3494 atempo_filter_deps="avcodec"
3495 atempo_filter_select="rdft"
3496 avgblur_opencl_filter_deps="opencl"
3497 avgblur_vulkan_filter_deps="vulkan libglslang"
3498 azmq_filter_deps="libzmq"
3499 blackframe_filter_deps="gpl"
3500 bm3d_filter_deps="avcodec"
3501 bm3d_filter_select="dct"
3502 boxblur_filter_deps="gpl"
3503 boxblur_opencl_filter_deps="opencl gpl"
3504 bs2b_filter_deps="libbs2b"
3505 chromaber_vulkan_filter_deps="vulkan libglslang"
3506 colorkey_opencl_filter_deps="opencl"
3507 colormatrix_filter_deps="gpl"
3508 convolution_opencl_filter_deps="opencl"
3509 convolve_filter_deps="avcodec"
3510 convolve_filter_select="fft"
3511 coreimage_filter_deps="coreimage appkit"
3512 coreimage_filter_extralibs="-framework OpenGL"
3513 coreimagesrc_filter_deps="coreimage appkit"
3514 coreimagesrc_filter_extralibs="-framework OpenGL"
3515 cover_rect_filter_deps="avcodec avformat gpl"
3516 cropdetect_filter_deps="gpl"
3517 deconvolve_filter_deps="avcodec"
3518 deconvolve_filter_select="fft"
3519 deinterlace_qsv_filter_deps="libmfx"
3520 deinterlace_vaapi_filter_deps="vaapi"
3521 delogo_filter_deps="gpl"
3522 denoise_vaapi_filter_deps="vaapi"
3523 derain_filter_select="dnn"
3524 deshake_filter_select="pixelutils"
3525 deshake_opencl_filter_deps="opencl"
3526 dilation_opencl_filter_deps="opencl"
3527 dnn_processing_filter_deps="swscale"
3528 dnn_processing_filter_select="dnn"
3529 drawtext_filter_deps="libfreetype"
3530 drawtext_filter_suggest="libfontconfig libfribidi"
3531 elbg_filter_deps="avcodec"
3532 eq_filter_deps="gpl"
3533 erosion_opencl_filter_deps="opencl"
3534 fftfilt_filter_deps="avcodec"
3535 fftfilt_filter_select="rdft"
3536 fftdnoiz_filter_deps="avcodec"
3537 fftdnoiz_filter_select="fft"
3538 find_rect_filter_deps="avcodec avformat gpl"
3539 firequalizer_filter_deps="avcodec"
3540 firequalizer_filter_select="rdft"
3541 flite_filter_deps="libflite"
3542 framerate_filter_select="scene_sad"
3543 freezedetect_filter_select="scene_sad"
3544 frei0r_filter_deps="frei0r libdl"
3545 frei0r_src_filter_deps="frei0r libdl"
3546 fspp_filter_deps="gpl"
3547 headphone_filter_select="fft"
3548 histeq_filter_deps="gpl"
3549 hqdn3d_filter_deps="gpl"
3550 interlace_filter_deps="gpl"
3551 kerndeint_filter_deps="gpl"
3552 ladspa_filter_deps="ladspa libdl"
3553 lensfun_filter_deps="liblensfun version3"
3554 lv2_filter_deps="lv2"
3555 mcdeint_filter_deps="avcodec gpl"
3556 movie_filter_deps="avcodec avformat"
3557 mpdecimate_filter_deps="gpl"
3558 mpdecimate_filter_select="pixelutils"
3559 minterpolate_filter_select="scene_sad"
3560 mptestsrc_filter_deps="gpl"
3561 negate_filter_deps="lut_filter"
3562 nlmeans_opencl_filter_deps="opencl"
3563 nnedi_filter_deps="gpl"
3564 ocr_filter_deps="libtesseract"
3565 ocv_filter_deps="libopencv"
3566 openclsrc_filter_deps="opencl"
3567 overlay_opencl_filter_deps="opencl"
3568 overlay_qsv_filter_deps="libmfx"
3569 overlay_qsv_filter_select="qsvvpp"
3570 overlay_vulkan_filter_deps="vulkan libglslang"
3571 owdenoise_filter_deps="gpl"
3572 pad_opencl_filter_deps="opencl"
3573 pan_filter_deps="swresample"
3574 perspective_filter_deps="gpl"
3575 phase_filter_deps="gpl"
3576 pp7_filter_deps="gpl"
3577 pp_filter_deps="gpl postproc"
3578 prewitt_opencl_filter_deps="opencl"
3579 procamp_vaapi_filter_deps="vaapi"
3580 program_opencl_filter_deps="opencl"
3581 pullup_filter_deps="gpl"
3582 removelogo_filter_deps="avcodec avformat swscale"
3583 repeatfields_filter_deps="gpl"
3584 resample_filter_deps="avresample"
3585 roberts_opencl_filter_deps="opencl"
3586 rubberband_filter_deps="librubberband"
3587 sab_filter_deps="gpl swscale"
3588 scale2ref_filter_deps="swscale"
3589 scale_filter_deps="swscale"
3590 scale_qsv_filter_deps="libmfx"
3591 scdet_filter_select="scene_sad"
3592 select_filter_select="scene_sad"
3593 sharpness_vaapi_filter_deps="vaapi"
3594 showcqt_filter_deps="avcodec avformat swscale"
3595 showcqt_filter_suggest="libfontconfig libfreetype"
3596 showcqt_filter_select="fft"
3597 showfreqs_filter_deps="avcodec"
3598 showfreqs_filter_select="fft"
3599 showspatial_filter_select="fft"
3600 showspectrum_filter_deps="avcodec"
3601 showspectrum_filter_select="fft"
3602 showspectrumpic_filter_deps="avcodec"
3603 showspectrumpic_filter_select="fft"
3604 signature_filter_deps="gpl avcodec avformat"
3605 sinc_filter_select="rdft"
3606 smartblur_filter_deps="gpl swscale"
3607 sobel_opencl_filter_deps="opencl"
3608 sofalizer_filter_deps="libmysofa avcodec"
3609 sofalizer_filter_select="fft"
3610 spectrumsynth_filter_deps="avcodec"
3611 spectrumsynth_filter_select="fft"
3612 spp_filter_deps="gpl avcodec"
3613 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3614 sr_filter_deps="avformat swscale"
3615 sr_filter_select="dnn"
3616 stereo3d_filter_deps="gpl"
3617 subtitles_filter_deps="avformat avcodec libass"
3618 super2xsai_filter_deps="gpl"
3619 pixfmts_super2xsai_test_deps="super2xsai_filter"
3620 superequalizer_filter_select="rdft"
3621 surround_filter_select="rdft"
3622 tinterlace_filter_deps="gpl"
3623 tinterlace_merge_test_deps="tinterlace_filter"
3624 tinterlace_pad_test_deps="tinterlace_filter"
3625 tonemap_filter_deps="const_nan"
3626 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3627 tonemap_opencl_filter_deps="opencl const_nan"
3628 transpose_opencl_filter_deps="opencl"
3629 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3630 unsharp_opencl_filter_deps="opencl"
3631 uspp_filter_deps="gpl avcodec"
3632 vaguedenoiser_filter_deps="gpl"
3633 vidstabdetect_filter_deps="libvidstab"
3634 vidstabtransform_filter_deps="libvidstab"
3635 libvmaf_filter_deps="libvmaf pthreads"
3636 zmq_filter_deps="libzmq"
3637 zoompan_filter_deps="swscale"
3638 zscale_filter_deps="libzimg const_nan"
3639 scale_vaapi_filter_deps="vaapi"
3640 scale_vulkan_filter_deps="vulkan libglslang"
3641 vpp_qsv_filter_deps="libmfx"
3642 vpp_qsv_filter_select="qsvvpp"
3643 xfade_opencl_filter_deps="opencl"
3644 yadif_cuda_filter_deps="ffnvcodec"
3645 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3646
3647 # examples
3648 avio_list_dir_deps="avformat avutil"
3649 avio_reading_deps="avformat avcodec avutil"
3650 decode_audio_example_deps="avcodec avutil"
3651 decode_video_example_deps="avcodec avutil"
3652 demuxing_decoding_example_deps="avcodec avformat avutil"
3653 encode_audio_example_deps="avcodec avutil"
3654 encode_video_example_deps="avcodec avutil"
3655 extract_mvs_example_deps="avcodec avformat avutil"
3656 filter_audio_example_deps="avfilter avutil"
3657 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3658 filtering_video_example_deps="avfilter avcodec avformat avutil"
3659 http_multiclient_example_deps="avformat avutil fork"
3660 hw_decode_example_deps="avcodec avformat avutil"
3661 metadata_example_deps="avformat avutil"
3662 muxing_example_deps="avcodec avformat avutil swscale"
3663 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3664 remuxing_example_deps="avcodec avformat avutil"
3665 resampling_audio_example_deps="avutil swresample"
3666 scaling_video_example_deps="avutil swscale"
3667 transcode_aac_example_deps="avcodec avformat swresample"
3668 transcoding_example_deps="avfilter avcodec avformat avutil"
3669 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3670 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3671
3672 # EXTRALIBS_LIST
3673 cpu_init_extralibs="pthreads_extralibs"
3674 cws2fws_extralibs="zlib_extralibs"
3675
3676 # libraries, in any order
3677 avcodec_deps="avutil"
3678 avcodec_suggest="libm"
3679 avcodec_select="null_bsf"
3680 avdevice_deps="avformat avcodec avutil"
3681 avdevice_suggest="libm"
3682 avfilter_deps="avutil"
3683 avfilter_suggest="libm"
3684 avformat_deps="avcodec avutil"
3685 avformat_suggest="libm network zlib"
3686 avresample_deps="avutil"
3687 avresample_suggest="libm"
3688 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3689 postproc_deps="avutil gpl"
3690 postproc_suggest="libm"
3691 swresample_deps="avutil"
3692 swresample_suggest="libm libsoxr"
3693 swscale_deps="avutil"
3694 swscale_suggest="libm"
3695
3696 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3697 avfilter_extralibs="pthreads_extralibs"
3698 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3699
3700 # programs
3701 ffmpeg_deps="avcodec avfilter avformat"
3702 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3703                hflip_filter null_filter
3704                transpose_filter trim_filter vflip_filter"
3705 ffmpeg_suggest="ole32 psapi shell32"
3706 ffplay_deps="avcodec avformat swscale swresample sdl2"
3707 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3708 ffplay_suggest="shell32"
3709 ffprobe_deps="avcodec avformat"
3710 ffprobe_suggest="shell32"
3711
3712 # documentation
3713 podpages_deps="perl"
3714 manpages_deps="perl pod2man"
3715 htmlpages_deps="perl"
3716 htmlpages_deps_any="makeinfo_html texi2html"
3717 txtpages_deps="perl makeinfo"
3718 doc_deps_any="manpages htmlpages podpages txtpages"
3719
3720 # default parameters
3721
3722 logfile="ffbuild/config.log"
3723
3724 # installation paths
3725 prefix_default="/usr/local"
3726 bindir_default='${prefix}/bin'
3727 datadir_default='${prefix}/share/ffmpeg'
3728 docdir_default='${prefix}/share/doc/ffmpeg'
3729 incdir_default='${prefix}/include'
3730 libdir_default='${prefix}/lib'
3731 mandir_default='${prefix}/share/man'
3732
3733 # toolchain
3734 ar_default="ar"
3735 cc_default="gcc"
3736 cxx_default="g++"
3737 host_cc_default="gcc"
3738 doxygen_default="doxygen"
3739 install="install"
3740 ln_s_default="ln -s -f"
3741 nm_default="nm -g"
3742 pkg_config_default=pkg-config
3743 ranlib_default="ranlib"
3744 strip_default="strip"
3745 version_script='--version-script'
3746 objformat="elf32"
3747 x86asmexe_default="nasm"
3748 windres_default="windres"
3749 striptype="direct"
3750
3751 # OS
3752 target_os_default=$(tolower $(uname -s))
3753 host_os=$target_os_default
3754
3755 # machine
3756 if test "$target_os_default" = aix; then
3757     arch_default=$(uname -p)
3758     strip_default="strip -X32_64"
3759     nm_default="nm -g -X32_64"
3760 else
3761     arch_default=$(uname -m)
3762 fi
3763 cpu="generic"
3764 intrinsics="none"
3765
3766 # configurable options
3767 enable $PROGRAM_LIST
3768 enable $DOCUMENT_LIST
3769 enable $EXAMPLE_LIST
3770 enable $(filter_out avresample $LIBRARY_LIST)
3771 enable stripping
3772
3773 enable asm
3774 enable debug
3775 enable doc
3776 enable faan faandct faanidct
3777 enable large_tests
3778 enable optimizations
3779 enable runtime_cpudetect
3780 enable safe_bitstream_reader
3781 enable static
3782 enable swscale_alpha
3783 enable valgrind_backtrace
3784
3785 sws_max_filter_size_default=256
3786 set_default sws_max_filter_size
3787
3788 # internal components are enabled by default
3789 enable $EXTRALIBS_LIST
3790
3791 # Avoid external, non-system, libraries getting enabled by dependency resolution
3792 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3793
3794 # build settings
3795 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3796 LIBPREF="lib"
3797 LIBSUF=".a"
3798 FULLNAME='$(NAME)$(BUILDSUF)'
3799 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3800 SLIBPREF="lib"
3801 SLIBSUF=".so"
3802 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3803 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3804 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3805 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3806 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3807 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3808 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3809
3810 asflags_filter=echo
3811 cflags_filter=echo
3812 ldflags_filter=echo
3813
3814 AS_C='-c'
3815 AS_O='-o $@'
3816 CC_C='-c'
3817 CC_E='-E -o $@'
3818 CC_O='-o $@'
3819 CXX_C='-c'
3820 CXX_O='-o $@'
3821 OBJCC_C='-c'
3822 OBJCC_E='-E -o $@'
3823 OBJCC_O='-o $@'
3824 X86ASM_O='-o $@'
3825 LD_O='-o $@'
3826 LD_LIB='-l%'
3827 LD_PATH='-L'
3828 HOSTCC_C='-c'
3829 HOSTCC_E='-E -o $@'
3830 HOSTCC_O='-o $@'
3831 HOSTLD_O='-o $@'
3832 NVCC_C='-c'
3833 NVCC_O='-o $@'
3834
3835 host_extralibs='-lm'
3836 host_cflags_filter=echo
3837 host_ldflags_filter=echo
3838
3839 target_path='$(CURDIR)'
3840
3841 # since the object filename is not given with the -MM flag, the compiler
3842 # is only able to print the basename, and we must add the path ourselves
3843 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3844 DEPFLAGS='-MM'
3845
3846 mkdir -p ffbuild
3847
3848 # find source path
3849 if test -f configure; then
3850     source_path=.
3851 elif test -f src/configure; then
3852     source_path=src
3853 else
3854     source_path=$(cd $(dirname "$0"); pwd)
3855     case "$source_path" in
3856         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3857     esac
3858     test -e "$source_path/config.h" &&
3859         die "Out of tree builds are impossible with config.h in source dir."
3860 fi
3861
3862 for v in "$@"; do
3863     r=${v#*=}
3864     l=${v%"$r"}
3865     r=$(sh_quote "$r")
3866     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3867 done
3868
3869 find_things_extern(){
3870     thing=$1
3871     pattern=$2
3872     file=$source_path/$3
3873     out=${4:-$thing}
3874     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3875 }
3876
3877 find_filters_extern(){
3878     file=$source_path/$1
3879     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3880 }
3881
3882 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3883 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3884 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3885 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3886 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3887 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3888 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3889 CODEC_LIST="
3890     $ENCODER_LIST
3891     $DECODER_LIST
3892 "
3893 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3894 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3895 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3896 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3897
3898 AVCODEC_COMPONENTS_LIST="
3899     $BSF_LIST
3900     $DECODER_LIST
3901     $ENCODER_LIST
3902     $HWACCEL_LIST
3903     $PARSER_LIST
3904 "
3905
3906 AVDEVICE_COMPONENTS_LIST="
3907     $INDEV_LIST
3908     $OUTDEV_LIST
3909 "
3910
3911 AVFILTER_COMPONENTS_LIST="
3912     $FILTER_LIST
3913 "
3914
3915 AVFORMAT_COMPONENTS_LIST="
3916     $DEMUXER_LIST
3917     $MUXER_LIST
3918     $PROTOCOL_LIST
3919 "
3920
3921 ALL_COMPONENTS="
3922     $AVCODEC_COMPONENTS_LIST
3923     $AVDEVICE_COMPONENTS_LIST
3924     $AVFILTER_COMPONENTS_LIST
3925     $AVFORMAT_COMPONENTS_LIST
3926 "
3927
3928 for n in $COMPONENT_LIST; do
3929     v=$(toupper ${n%s})_LIST
3930     eval enable \$$v
3931     eval ${n}_if_any="\$$v"
3932 done
3933
3934 enable $ARCH_EXT_LIST
3935
3936 die_unknown(){
3937     echo "Unknown option \"$1\"."
3938     echo "See $0 --help for available options."
3939     exit 1
3940 }
3941
3942 print_in_columns() {
3943     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3944     {
3945         num_cols = width > col_width ? int(width / col_width) : 1;
3946         num_rows = int((NF + num_cols-1) / num_cols);
3947         y = x = 1;
3948         for (y = 1; y <= num_rows; y++) {
3949             i = y;
3950             for (x = 1; x <= num_cols; x++) {
3951                 if (i <= NF) {
3952                   line = sprintf("%s%-" col_width "s", line, $i);
3953                 }
3954                 i = i + num_rows;
3955             }
3956             print line; line = "";
3957         }
3958     }' | sed 's/ *$//'
3959 }
3960
3961 show_list() {
3962     suffix=_$1
3963     shift
3964     echo $* | sed s/$suffix//g | print_in_columns
3965     exit 0
3966 }
3967
3968 rand_list(){
3969     IFS=', '
3970     set -- $*
3971     unset IFS
3972     for thing; do
3973         comp=${thing%:*}
3974         prob=${thing#$comp}
3975         prob=${prob#:}
3976         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3977         echo "prob ${prob:-0.5}"
3978         printf '%s\n' $comp
3979     done
3980 }
3981
3982 do_random(){
3983     action=$1
3984     shift
3985     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3986     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3987 }
3988
3989 for opt do
3990     optval="${opt#*=}"
3991     case "$opt" in
3992         --extra-ldflags=*)
3993             add_ldflags $optval
3994         ;;
3995         --extra-ldexeflags=*)
3996             add_ldexeflags $optval
3997         ;;
3998         --extra-ldsoflags=*)
3999             add_ldsoflags $optval
4000         ;;
4001         --extra-ldlibflags=*)
4002             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4003                  "removed in the future. Use --extra-ldsoflags instead."
4004             add_ldsoflags $optval
4005         ;;
4006         --extra-libs=*)
4007             add_extralibs $optval
4008         ;;
4009         --disable-devices)
4010             disable $INDEV_LIST $OUTDEV_LIST
4011         ;;
4012         --enable-debug=*)
4013             debuglevel="$optval"
4014         ;;
4015         --disable-programs)
4016             disable $PROGRAM_LIST
4017         ;;
4018         --disable-everything)
4019             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4020         ;;
4021         --disable-all)
4022             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4023             disable $LIBRARY_LIST $PROGRAM_LIST doc
4024             enable avutil
4025         ;;
4026         --enable-random|--disable-random)
4027             action=${opt%%-random}
4028             do_random ${action#--} $COMPONENT_LIST
4029         ;;
4030         --enable-random=*|--disable-random=*)
4031             action=${opt%%-random=*}
4032             do_random ${action#--} $optval
4033         ;;
4034         --enable-sdl)
4035             enable sdl2
4036         ;;
4037         --enable-*=*|--disable-*=*)
4038             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4039             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4040             eval list=\$$(toupper $thing)_LIST
4041             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4042             list=$(filter "$name" $list)
4043             [ "$list" = "" ] && warn "Option $opt did not match anything"
4044             test $action = enable && warn_if_gets_disabled $list
4045             $action $list
4046         ;;
4047         --enable-yasm|--disable-yasm)
4048             warn "The ${opt} option is only provided for compatibility and will be\n"\
4049                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4050             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4051         ;;
4052         --yasmexe=*)
4053             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4054                  "removed in the future. Use --x86asmexe instead."
4055             x86asmexe="$optval"
4056         ;;
4057         --enable-?*|--disable-?*)
4058             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4059             if is_in $option $COMPONENT_LIST; then
4060                 test $action = disable && action=unset
4061                 eval $action \$$(toupper ${option%s})_LIST
4062             elif is_in $option $CMDLINE_SELECT; then
4063                 $action $option
4064             else
4065                 die_unknown $opt
4066             fi
4067         ;;
4068         --list-*)
4069             NAME="${opt#--list-}"
4070             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4071             NAME=${NAME%s}
4072             eval show_list $NAME \$$(toupper $NAME)_LIST
4073         ;;
4074         --help|-h) show_help
4075         ;;
4076         --quiet|-q) quiet=yes
4077         ;;
4078         --fatal-warnings) enable fatal_warnings
4079         ;;
4080         --libfuzzer=*)
4081             libfuzzer_path="$optval"
4082         ;;
4083         *)
4084             optname="${opt%%=*}"
4085             optname="${optname#--}"
4086             optname=$(echo "$optname" | sed 's/-/_/g')
4087             if is_in $optname $CMDLINE_SET; then
4088                 eval $optname='$optval'
4089             elif is_in $optname $CMDLINE_APPEND; then
4090                 append $optname "$optval"
4091             else
4092                 die_unknown $opt
4093             fi
4094         ;;
4095     esac
4096 done
4097
4098 for e in $env; do
4099     eval "export $e"
4100 done
4101
4102 if disabled autodetect; then
4103
4104     # Unless iconv is explicitely disabled by the user, we still want to probe
4105     # for the iconv from the libc.
4106     disabled iconv || enable libc_iconv
4107
4108     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4109     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4110 fi
4111 # Mark specifically enabled, but normally autodetected libraries as requested.
4112 for lib in $AUTODETECT_LIBS; do
4113     enabled $lib && request $lib
4114 done
4115 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4116 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4117 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4118
4119 disabled logging && logfile=/dev/null
4120
4121 # command line configuration sanity checks
4122
4123 # we need to build at least one lib type
4124 if ! enabled_any static shared; then
4125     cat <<EOF
4126 At least one library type must be built.
4127 Specify --enable-static to build the static libraries or --enable-shared to
4128 build the shared libraries as well. To only build the shared libraries specify
4129 --disable-static in addition to --enable-shared.
4130 EOF
4131     exit 1
4132 fi
4133
4134 die_license_disabled() {
4135     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4136 }
4137
4138 die_license_disabled_gpl() {
4139     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4140 }
4141
4142 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4143 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4144
4145 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4146 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4147
4148 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4149
4150 if enabled nonfree; then
4151     license="nonfree and unredistributable"
4152 elif enabled gplv3; then
4153     license="GPL version 3 or later"
4154 elif enabled lgplv3; then
4155     license="LGPL version 3 or later"
4156 elif enabled gpl; then
4157     license="GPL version 2 or later"
4158 else
4159     license="LGPL version 2.1 or later"
4160 fi
4161
4162 enabled_all gnutls openssl &&
4163     die "GnuTLS and OpenSSL must not be enabled at the same time."
4164
4165 enabled_all gnutls mbedtls &&
4166     die "GnuTLS and mbedTLS must not be enabled at the same time."
4167
4168 enabled_all openssl mbedtls &&
4169     die "OpenSSL and mbedTLS must not be enabled at the same time."
4170
4171 # Disable all the library-specific components if the library itself
4172 # is disabled, see AVCODEC_LIST and following _LIST variables.
4173
4174 disable_components(){
4175     disabled ${1} && disable $(
4176         eval components="\$$(toupper ${1})_COMPONENTS"
4177         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4178     )
4179 }
4180
4181 map 'disable_components $v' $LIBRARY_LIST
4182
4183 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4184 set >> $logfile
4185
4186 test -n "$valgrind" && toolchain="valgrind-memcheck"
4187
4188 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4189     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4190     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4191 }
4192
4193 case "$toolchain" in
4194     *-asan)
4195         cc_default="${toolchain%-asan}"
4196         add_cflags  -fsanitize=address
4197         add_ldflags -fsanitize=address
4198     ;;
4199     *-msan)
4200         cc_default="${toolchain%-msan}"
4201         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4202         add_ldflags -fsanitize=memory
4203     ;;
4204     *-tsan)
4205         cc_default="${toolchain%-tsan}"
4206         add_cflags  -fsanitize=thread
4207         add_ldflags -fsanitize=thread
4208         case "$toolchain" in
4209             gcc-tsan)
4210                 add_cflags  -fPIC
4211                 add_ldflags -fPIC
4212                 ;;
4213         esac
4214     ;;
4215     *-usan)
4216         cc_default="${toolchain%-usan}"
4217         add_cflags  -fsanitize=undefined
4218         add_ldflags -fsanitize=undefined
4219     ;;
4220     valgrind-*)
4221         target_exec_default="valgrind"
4222         case "$toolchain" in
4223             valgrind-massif)
4224                 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"
4225                 ;;
4226             valgrind-memcheck)
4227                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4228                 ;;
4229         esac
4230     ;;
4231     msvc)
4232         # Check whether the current MSVC version needs the C99 converter.
4233         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4234         # support enough of C99 to build ffmpeg. Default to the new
4235         # behaviour if the regexp was unable to match anything, since this
4236         # successfully parses the version number of existing supported
4237         # versions that require the converter (MSVC 2010 and 2012).
4238         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4239         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4240             cc_default="cl.exe"
4241             cxx_default="cl.exe"
4242         else
4243             die "Unsupported MSVC version (2013 or newer required)"
4244         fi
4245         ld_default="$source_path/compat/windows/mslink"
4246         nm_default="dumpbin.exe -symbols"
4247         ar_default="lib.exe"
4248         case "$arch" in
4249         aarch64|arm64)
4250             as_default="armasm64.exe"
4251             ;;
4252         arm*)
4253             as_default="armasm.exe"
4254             ;;
4255         esac
4256         target_os_default="win32"
4257         # Use a relative path for TMPDIR. This makes sure all the
4258         # ffconf temp files are written with a relative path, avoiding
4259         # issues with msys/win32 path conversion for MSVC parameters
4260         # such as -Fo<file> or -out:<file>.
4261         TMPDIR=.
4262     ;;
4263     icl)
4264         cc_default="icl"
4265         ld_default="xilink"
4266         nm_default="dumpbin -symbols"
4267         ar_default="xilib"
4268         target_os_default="win32"
4269         TMPDIR=.
4270     ;;
4271     gcov)
4272         add_cflags  -fprofile-arcs -ftest-coverage
4273         add_ldflags -fprofile-arcs -ftest-coverage
4274     ;;
4275     llvm-cov)
4276         add_cflags -fprofile-arcs -ftest-coverage
4277         add_ldflags --coverage
4278     ;;
4279     hardened)
4280         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4281         add_cflags   -fno-strict-overflow -fstack-protector-all
4282         add_ldflags  -Wl,-z,relro -Wl,-z,now
4283         add_cflags   -fPIE
4284         add_ldexeflags -fPIE -pie
4285     ;;
4286     ?*)
4287         die "Unknown toolchain $toolchain"
4288     ;;
4289 esac
4290
4291 if test -n "$cross_prefix"; then
4292     test -n "$arch" && test -n "$target_os" ||
4293         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4294     enable cross_compile
4295 fi
4296
4297 set_default target_os
4298 if test "$target_os" = android; then
4299     cc_default="clang"
4300 fi
4301
4302 ar_default="${cross_prefix}${ar_default}"
4303 cc_default="${cross_prefix}${cc_default}"
4304 cxx_default="${cross_prefix}${cxx_default}"
4305 nm_default="${cross_prefix}${nm_default}"
4306 pkg_config_default="${cross_prefix}${pkg_config_default}"
4307 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4308     ranlib_default="${cross_prefix}${ranlib_default} -D"
4309 else
4310     ranlib_default="${cross_prefix}${ranlib_default}"
4311 fi
4312 strip_default="${cross_prefix}${strip_default}"
4313 windres_default="${cross_prefix}${windres_default}"
4314
4315 sysinclude_default="${sysroot}/usr/include"
4316
4317 if enabled cuda_sdk; then
4318     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4319     enable cuda_nvcc
4320 fi
4321
4322 if enabled cuda_nvcc; then
4323     nvcc_default="nvcc"
4324     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4325 else
4326     nvcc_default="clang"
4327     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4328     NVCC_C=""
4329 fi
4330
4331 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4332     target_exec x86asmexe nvcc
4333 enabled cross_compile || host_cc_default=$cc
4334 set_default host_cc
4335
4336 pkg_config_fail_message=""
4337 if ! $pkg_config --version >/dev/null 2>&1; then
4338     warn "$pkg_config not found, library detection may fail."
4339     pkg_config=false
4340 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4341     pkg_config_fail_message="
4342 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4343 fi
4344
4345 if test $doxygen != $doxygen_default && \
4346   ! $doxygen --version >/dev/null 2>&1; then
4347     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4348 fi
4349
4350 exesuf() {
4351     case $1 in
4352         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4353     esac
4354 }
4355
4356 EXESUF=$(exesuf $target_os)
4357 HOSTEXESUF=$(exesuf $host_os)
4358
4359 # set temporary file name
4360 : ${TMPDIR:=$TEMPDIR}
4361 : ${TMPDIR:=$TMP}
4362 : ${TMPDIR:=/tmp}
4363
4364 if [ -n "$tempprefix" ] ; then
4365     mktemp(){
4366         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4367         echo "$tmpname"
4368         mkdir "$tmpname"
4369     }
4370 elif ! test_cmd mktemp -u XXXXXX; then
4371     # simple replacement for missing mktemp
4372     # NOT SAFE FOR GENERAL USE
4373     mktemp(){
4374         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4375         echo "$tmpname"
4376         mkdir "$tmpname"
4377     }
4378 fi
4379
4380 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4381     die "Unable to create temporary directory in $TMPDIR."
4382
4383 tmpfile(){
4384     tmp="${FFTMPDIR}/test"$2
4385     (set -C; exec > $tmp) 2> /dev/null ||
4386         die "Unable to create temporary file in $FFTMPDIR."
4387     eval $1=$tmp
4388 }
4389
4390 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4391 trap 'exit 2' INT
4392
4393 tmpfile TMPASM .asm
4394 tmpfile TMPC   .c
4395 tmpfile TMPCPP .cpp
4396 tmpfile TMPE   $EXESUF
4397 tmpfile TMPH   .h
4398 tmpfile TMPM   .m
4399 tmpfile TMPCU  .cu
4400 tmpfile TMPO   .o
4401 tmpfile TMPS   .S
4402 tmpfile TMPSH  .sh
4403 tmpfile TMPV   .ver
4404
4405 unset -f mktemp
4406
4407 chmod +x $TMPE
4408
4409 # make sure we can execute files in $TMPDIR
4410 cat > $TMPSH 2>> $logfile <<EOF
4411 #! /bin/sh
4412 EOF
4413 chmod +x $TMPSH >> $logfile 2>&1
4414 if ! $TMPSH >> $logfile 2>&1; then
4415     cat <<EOF
4416 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4417 variable to another directory and make sure that it is not mounted noexec.
4418 EOF
4419     die "Sanity test failed."
4420 fi
4421
4422 armasm_flags(){
4423     for flag; do
4424         case $flag in
4425             # Filter out MSVC cl.exe options from cflags that shouldn't
4426             # be passed to gas-preprocessor
4427             -M[TD]*)                                            ;;
4428             *)                  echo $flag                      ;;
4429         esac
4430    done
4431 }
4432
4433 cparser_flags(){
4434     for flag; do
4435         case $flag in
4436             -Wno-switch)             echo -Wno-switch-enum ;;
4437             -Wno-format-zero-length) ;;
4438             -Wdisabled-optimization) ;;
4439             -Wno-pointer-sign)       echo -Wno-other ;;
4440             *)                       echo $flag ;;
4441         esac
4442     done
4443 }
4444
4445 msvc_common_flags(){
4446     for flag; do
4447         case $flag in
4448             # In addition to specifying certain flags under the compiler
4449             # specific filters, they must be specified here as well or else the
4450             # generic catch all at the bottom will print the original flag.
4451             -Wall)                ;;
4452             -Wextra)              ;;
4453             -std=c*)              ;;
4454             # Common flags
4455             -fomit-frame-pointer) ;;
4456             -g)                   echo -Z7 ;;
4457             -fno-math-errno)      ;;
4458             -fno-common)          ;;
4459             -fno-signed-zeros)    ;;
4460             -fPIC)                ;;
4461             -mthumb)              ;;
4462             -march=*)             ;;
4463             -lz)                  echo zlib.lib ;;
4464             -lx264)               echo libx264.lib ;;
4465             -lstdc++)             ;;
4466             -l*)                  echo ${flag#-l}.lib ;;
4467             -LARGEADDRESSAWARE)   echo $flag ;;
4468             -L*)                  echo -libpath:${flag#-L} ;;
4469             -Wl,*)                ;;
4470             *)                    echo $flag ;;
4471         esac
4472     done
4473 }
4474
4475 msvc_flags(){
4476     msvc_common_flags "$@"
4477     for flag; do
4478         case $flag in
4479             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4480                                        -wd4554 ;;
4481             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4482                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4483                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4484                                        -wd4307 \
4485                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4486         esac
4487     done
4488 }
4489
4490 icl_flags(){
4491     msvc_common_flags "$@"
4492     for flag; do
4493         case $flag in
4494             # Despite what Intel's documentation says -Wall, which is supported
4495             # on Windows, does enable remarks so disable them here.
4496             -Wall)                echo $flag -Qdiag-disable:remark ;;
4497             -std=c99)             echo -Qstd=c99 ;;
4498             -flto)                echo -ipo ;;
4499         esac
4500     done
4501 }
4502
4503 icc_flags(){
4504     for flag; do
4505         case $flag in
4506             -flto)                echo -ipo ;;
4507             *)                    echo $flag ;;
4508         esac
4509     done
4510 }
4511
4512 suncc_flags(){
4513     for flag; do
4514         case $flag in
4515             -march=*|-mcpu=*)
4516                 case "${flag#*=}" in
4517                     native)                   echo -xtarget=native       ;;
4518                     v9|niagara)               echo -xarch=sparc          ;;
4519                     ultrasparc)               echo -xarch=sparcvis       ;;
4520                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4521                     i586|pentium)             echo -xchip=pentium        ;;
4522                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4523                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4524                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4525                     pentium4*)          echo -xtarget=pentium4           ;;
4526                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4527                     *-sse3)             echo -xarch=sse3                 ;;
4528                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4529                     bonnell)                   echo -xarch=ssse3         ;;
4530                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4531                     westmere)                  echo -xtarget=westmere    ;;
4532                     silvermont)                echo -xarch=sse4_2        ;;
4533                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4534                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4535                                                echo -xarch=avx           ;;
4536                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4537                     btver1)                    echo -xarch=amdsse4a      ;;
4538                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4539                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4540                     k8|opteron|athlon64|athlon-fx)
4541                                                echo -xarch=sse2a         ;;
4542                     athlon*)                   echo -xarch=pentium_proa  ;;
4543                 esac
4544                 ;;
4545             -std=c99)             echo -xc99              ;;
4546             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4547             -fPIC)                echo -KPIC -xcode=pic32 ;;
4548             -W*,*)                echo $flag              ;;
4549             -f*-*|-W*|-mimpure-text)                      ;;
4550             -shared)              echo -G                 ;;
4551             *)                    echo $flag              ;;
4552         esac
4553     done
4554 }
4555
4556 probe_cc(){
4557     pfx=$1
4558     _cc=$2
4559     first=$3
4560
4561     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4562     unset _ld_o _ldflags _ld_lib _ld_path
4563     unset _depflags _DEPCMD _DEPFLAGS
4564     _flags_filter=echo
4565
4566     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4567         true # no-op to avoid reading stdin in following checks
4568     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4569         _type=llvm_gcc
4570         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4571         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4572         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4573         _cflags_speed='-O3'
4574         _cflags_size='-Os'
4575     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4576         _type=gcc
4577         gcc_version=$($_cc --version | head -n1)
4578         gcc_basever=$($_cc -dumpversion)
4579         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4580         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4581         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4582         case $gcc_basever in
4583             2) ;;
4584             2.*) ;;
4585             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4586         esac
4587         if [ "$first" = true ]; then
4588             case $gcc_basever in
4589                 4.2*)
4590                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4591             esac
4592         fi
4593         _cflags_speed='-O3'
4594         _cflags_size='-Os'
4595     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4596         _type=icc
4597         _ident=$($_cc --version | head -n1)
4598         _depflags='-MMD'
4599         _cflags_speed='-O3'
4600         _cflags_size='-Os'
4601         _cflags_noopt='-O1'
4602         _flags_filter=icc_flags
4603     elif $_cc -v 2>&1 | grep -q xlc; then
4604         _type=xlc
4605         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4606         _cflags_speed='-O5'
4607         _cflags_size='-O5 -qcompact'
4608     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4609         test -d "$sysroot" || die "No valid sysroot specified."
4610         _type=armcc
4611         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4612         armcc_conf="$PWD/armcc.conf"
4613         $_cc --arm_linux_configure                 \
4614              --arm_linux_config_file="$armcc_conf" \
4615              --configure_sysroot="$sysroot"        \
4616              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4617              die "Error creating armcc configuration file."
4618         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4619         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4620         as_default="${cross_prefix}gcc"
4621         _depflags='-MMD'
4622         _cflags_speed='-O3'
4623         _cflags_size='-Os'
4624     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4625         _type=clang
4626         _ident=$($_cc --version 2>/dev/null | head -n1)
4627         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4628         _cflags_speed='-O3'
4629         _cflags_size='-Oz'
4630     elif $_cc -V 2>&1 | grep -q Sun; then
4631         _type=suncc
4632         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4633         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4634         _DEPFLAGS='-xM1 -xc99'
4635         _ldflags='-std=c99'
4636         _cflags_speed='-O5'
4637         _cflags_size='-O5 -xspace'
4638         _flags_filter=suncc_flags
4639     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4640         _type=pathscale
4641         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4642         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4643         _cflags_speed='-O2'
4644         _cflags_size='-Os'
4645         _flags_filter='filter_out -Wdisabled-optimization'
4646     elif $_cc -v 2>&1 | grep -q Open64; then
4647         _type=open64
4648         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4649         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4650         _cflags_speed='-O2'
4651         _cflags_size='-Os'
4652         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4653     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4654         _type=armasm
4655         _ident=$($_cc | head -n1)
4656         # 4509: "This form of conditional instruction is deprecated"
4657         _flags="-nologo -ignore 4509"
4658         _flags_filter=armasm_flags
4659     elif $_cc 2>&1 | grep -q Intel; then
4660         _type=icl
4661         _ident=$($_cc 2>&1 | head -n1)
4662         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4663         # Not only is O3 broken on 13.x+ but it is slower on all previous
4664         # versions (tested) as well.
4665         _cflags_speed="-O2"
4666         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4667         if $_cc 2>&1 | grep -q Linker; then
4668             _ld_o='-out:$@'
4669         else
4670             _ld_o='-Fe$@'
4671         fi
4672         _cc_o='-Fo$@'
4673         _cc_e='-P'
4674         _flags_filter=icl_flags
4675         _ld_lib='lib%.a'
4676         _ld_path='-libpath:'
4677         # -Qdiag-error to make icl error when seeing certain unknown arguments
4678         _flags='-nologo -Qdiag-error:4044,10157'
4679         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4680         # with MSVC which enables it by default.
4681         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4682         disable stripping
4683     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4684         # lld can emulate multiple different linkers; in ms link.exe mode,
4685         # the -? parameter gives the help output which contains an identifyable
4686         # string, while it gives an error in other modes.
4687         _type=lld-link
4688         # The link.exe mode doesn't have a switch for getting the version,
4689         # but we can force it back to gnu mode and get the version from there.
4690         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4691         _ld_o='-out:$@'
4692         _flags_filter=msvc_flags
4693         _ld_lib='lib%.a'
4694         _ld_path='-libpath:'
4695     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4696         _type=msvc
4697         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4698             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4699         else
4700             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4701         fi
4702         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4703         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4704         _cflags_speed="-O2"
4705         _cflags_size="-O1"
4706         _cflags_noopt="-O1"
4707         if $_cc -nologo- 2>&1 | grep -q Linker; then
4708             _ld_o='-out:$@'
4709         else
4710             _ld_o='-Fe$@'
4711         fi
4712         _cc_o='-Fo$@'
4713         _cc_e='-P -Fi$@'
4714         _flags_filter=msvc_flags
4715         _ld_lib='lib%.a'
4716         _ld_path='-libpath:'
4717         _flags='-nologo'
4718         disable stripping
4719     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4720         _type=cparser
4721         _ident=$($_cc --version | head -n1)
4722         _depflags='-MMD'
4723         _cflags_speed='-O4'
4724         _cflags_size='-O2'
4725         _flags_filter=cparser_flags
4726     fi
4727
4728     eval ${pfx}_type=\$_type
4729     eval ${pfx}_ident=\$_ident
4730 }
4731
4732 set_ccvars(){
4733     eval ${1}_C=\${_cc_c-\${${1}_C}}
4734     eval ${1}_E=\${_cc_e-\${${1}_E}}
4735     eval ${1}_O=\${_cc_o-\${${1}_O}}
4736
4737     if [ -n "$_depflags" ]; then
4738         eval ${1}_DEPFLAGS=\$_depflags
4739     else
4740         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4741         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4742         eval DEP${1}FLAGS=\$_flags
4743     fi
4744 }
4745
4746 probe_cc cc "$cc" "true"
4747 cflags_filter=$_flags_filter
4748 cflags_speed=$_cflags_speed
4749 cflags_size=$_cflags_size
4750 cflags_noopt=$_cflags_noopt
4751 add_cflags $_flags $_cflags
4752 cc_ldflags=$_ldflags
4753 set_ccvars CC
4754 set_ccvars CXX
4755
4756 probe_cc hostcc "$host_cc"
4757 host_cflags_filter=$_flags_filter
4758 host_cflags_speed=$_cflags_speed
4759 add_host_cflags  $_flags $_cflags
4760 set_ccvars HOSTCC
4761
4762 test -n "$cc_type" && enable $cc_type ||
4763     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4764
4765 : ${as_default:=$cc}
4766 : ${objcc_default:=$cc}
4767 : ${dep_cc_default:=$cc}
4768 : ${ld_default:=$cc}
4769 : ${host_ld_default:=$host_cc}
4770 set_default ar as objcc dep_cc ld ln_s host_ld windres
4771
4772 probe_cc as "$as"
4773 asflags_filter=$_flags_filter
4774 add_asflags $_flags $_cflags
4775 set_ccvars AS
4776
4777 probe_cc objcc "$objcc"
4778 objcflags_filter=$_flags_filter
4779 add_objcflags $_flags $_cflags
4780 set_ccvars OBJC
4781
4782 probe_cc ld "$ld"
4783 ldflags_filter=$_flags_filter
4784 add_ldflags $_flags $_ldflags
4785 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4786 LD_O=${_ld_o-$LD_O}
4787 LD_LIB=${_ld_lib-$LD_LIB}
4788 LD_PATH=${_ld_path-$LD_PATH}
4789
4790 probe_cc hostld "$host_ld"
4791 host_ldflags_filter=$_flags_filter
4792 add_host_ldflags $_flags $_ldflags
4793 HOSTLD_O=${_ld_o-$HOSTLD_O}
4794
4795 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4796     probe_cc depcc "$dep_cc"
4797     CCDEP=${_DEPCMD:-$DEPCMD}
4798     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4799     DEPCCFLAGS=$_flags
4800 fi
4801
4802 if $ar 2>&1 | grep -q Microsoft; then
4803     arflags="-nologo"
4804     ar_o='-out:$@'
4805 elif $ar 2>&1 | grep -q "\[D\] "; then
4806     arflags="rcD"
4807     ar_o='$@'
4808 else
4809     arflags="rc"
4810     ar_o='$@'
4811 fi
4812
4813 add_cflags $extra_cflags
4814 add_cxxflags $extra_cxxflags
4815 add_objcflags $extra_objcflags
4816 add_asflags $extra_cflags
4817
4818 if test -n "$sysroot"; then
4819     case "$cc_type" in
4820         gcc|llvm_gcc|clang)
4821             add_cppflags --sysroot="$sysroot"
4822             add_ldflags --sysroot="$sysroot"
4823         ;;
4824     esac
4825 fi
4826
4827 if test "$cpu" = host; then
4828     enabled cross_compile &&
4829         warn "--cpu=host makes no sense when cross-compiling."
4830
4831     case "$cc_type" in
4832         gcc|llvm_gcc)
4833             check_native(){
4834                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4835                 sed -n "/cc1.*$1=/{
4836                             s/.*$1=\\([^ ]*\\).*/\\1/
4837                             p
4838                             q
4839                         }" $TMPE
4840             }
4841             cpu=$(check_native -march || check_native -mcpu)
4842         ;;
4843         clang)
4844             check_native(){
4845                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4846                 sed -n "/cc1.*-target-cpu /{
4847                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4848                             p
4849                             q
4850                         }" $TMPE
4851             }
4852             cpu=$(check_native -march)
4853         ;;
4854     esac
4855
4856     test "${cpu:-host}" = host &&
4857         die "--cpu=host not supported with compiler $cc"
4858 fi
4859
4860 # Deal with common $arch aliases
4861 case "$arch" in
4862     aarch64|arm64)
4863         arch="aarch64"
4864     ;;
4865     arm*|iPad*|iPhone*)
4866         arch="arm"
4867     ;;
4868     mips*|IP*)
4869         case "$arch" in
4870         *el)
4871             add_cppflags -EL
4872             add_ldflags -EL
4873         ;;
4874         *eb)
4875             add_cppflags -EB
4876             add_ldflags -EB
4877         ;;
4878         esac
4879         arch="mips"
4880     ;;
4881     parisc*|hppa*)
4882         arch="parisc"
4883     ;;
4884     "Power Macintosh"|ppc*|powerpc*)
4885         arch="ppc"
4886     ;;
4887     s390|s390x)
4888         arch="s390"
4889     ;;
4890     sh4|sh)
4891         arch="sh4"
4892     ;;
4893     sun4*|sparc*)
4894         arch="sparc"
4895     ;;
4896     tilegx|tile-gx)
4897         arch="tilegx"
4898     ;;
4899     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4900         arch="x86"
4901     ;;
4902 esac
4903
4904 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4905 enable $arch
4906
4907 # Add processor-specific flags
4908 if enabled aarch64; then
4909
4910     case $cpu in
4911         armv*)
4912             cpuflags="-march=$cpu"
4913         ;;
4914         *)
4915             cpuflags="-mcpu=$cpu"
4916         ;;
4917     esac
4918
4919 elif enabled alpha; then
4920
4921     cpuflags="-mcpu=$cpu"
4922
4923 elif enabled arm; then
4924
4925     check_arm_arch() {
4926         test_cpp_condition stddef.h \
4927             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4928             $cpuflags
4929     }
4930
4931     probe_arm_arch() {
4932         if   check_arm_arch 4;        then echo armv4
4933         elif check_arm_arch 4T;       then echo armv4t
4934         elif check_arm_arch 5;        then echo armv5
4935         elif check_arm_arch 5E;       then echo armv5e
4936         elif check_arm_arch 5T;       then echo armv5t
4937         elif check_arm_arch 5TE;      then echo armv5te
4938         elif check_arm_arch 5TEJ;     then echo armv5te
4939         elif check_arm_arch 6;        then echo armv6
4940         elif check_arm_arch 6J;       then echo armv6j
4941         elif check_arm_arch 6K;       then echo armv6k
4942         elif check_arm_arch 6Z;       then echo armv6z
4943         elif check_arm_arch 6KZ;      then echo armv6zk
4944         elif check_arm_arch 6ZK;      then echo armv6zk
4945         elif check_arm_arch 6T2;      then echo armv6t2
4946         elif check_arm_arch 7;        then echo armv7
4947         elif check_arm_arch 7A  7_A;  then echo armv7-a
4948         elif check_arm_arch 7S;       then echo armv7-a
4949         elif check_arm_arch 7R  7_R;  then echo armv7-r
4950         elif check_arm_arch 7M  7_M;  then echo armv7-m
4951         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4952         elif check_arm_arch 8A  8_A;  then echo armv8-a
4953         fi
4954     }
4955
4956     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4957
4958     case $cpu in
4959         armv*)
4960             cpuflags="-march=$cpu"
4961             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4962         ;;
4963         *)
4964             cpuflags="-mcpu=$cpu"
4965             case $cpu in
4966                 cortex-a*)                               subarch=armv7a  ;;
4967                 cortex-r*)                               subarch=armv7r  ;;
4968                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4969                 arm11*)                                  subarch=armv6   ;;
4970                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4971                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4972                 *)                             subarch=$(probe_arm_arch) ;;
4973             esac
4974         ;;
4975     esac
4976
4977     case "$subarch" in
4978         armv5t*)    enable fast_clz                ;;
4979         armv[6-8]*)
4980             enable fast_clz
4981             disabled fast_unaligned || enable fast_unaligned
4982             ;;
4983     esac
4984
4985 elif enabled avr32; then
4986
4987     case $cpu in
4988         ap7[02]0[0-2])
4989             subarch="avr32_ap"
4990             cpuflags="-mpart=$cpu"
4991         ;;
4992         ap)
4993             subarch="avr32_ap"
4994             cpuflags="-march=$cpu"
4995         ;;
4996         uc3[ab]*)
4997             subarch="avr32_uc"
4998             cpuflags="-mcpu=$cpu"
4999         ;;
5000         uc)
5001             subarch="avr32_uc"
5002             cpuflags="-march=$cpu"
5003         ;;
5004     esac
5005
5006 elif enabled bfin; then
5007
5008     cpuflags="-mcpu=$cpu"
5009
5010 elif enabled mips; then
5011
5012     if [ "$cpu" != "generic" ]; then
5013         disable mips32r2
5014         disable mips32r5
5015         disable mips64r2
5016         disable mips32r6
5017         disable mips64r6
5018         disable loongson2
5019         disable loongson3
5020         disable mipsdsp
5021         disable mipsdspr2
5022         disable msa
5023         disable mmi
5024
5025         cpuflags="-march=$cpu"
5026
5027         case $cpu in
5028             # General ISA levels
5029             mips1|mips3)
5030             ;;
5031             mips32r2)
5032                 enable msa
5033                 enable mips32r2
5034             ;;
5035             mips32r5)
5036                 enable msa
5037                 enable mips32r2
5038                 enable mips32r5
5039             ;;
5040             mips64r2|mips64r5)
5041                 enable msa
5042                 enable mmi
5043                 enable mips64r2
5044                 enable loongson3
5045             ;;
5046             # Cores from MIPS(MTI)
5047             24kc)
5048                 disable mipsfpu
5049                 enable mips32r2
5050             ;;
5051             24kf*|24kec|34kc|74Kc|1004kc)
5052                 enable mips32r2
5053             ;;
5054             24kef*|34kf*|1004kf*)
5055                 enable mipsdsp
5056                 enable mips32r2
5057             ;;
5058             p5600)
5059                 enable msa
5060                 enable mips32r2
5061                 enable mips32r5
5062                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5063             ;;
5064             i6400)
5065                 enable mips64r6
5066                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5067             ;;
5068             p6600)
5069                 enable mips64r6
5070                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5071             ;;
5072             # Cores from Loongson
5073             loongson2e|loongson2f|loongson3*)
5074                 enable mmi
5075                 enable local_aligned
5076                 enable simd_align_16
5077                 enable fast_64bit
5078                 enable fast_clz
5079                 enable fast_cmov
5080                 enable fast_unaligned
5081                 disable aligned_stack
5082                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5083                 if test "$cc_type" = "gcc"; then
5084                     case $gcc_basever in
5085                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5086                         expensive_optimization_flag="-fno-expensive-optimizations"
5087                         ;;
5088                         *)
5089                         expensive_optimization_flag=""
5090                         ;;
5091                     esac
5092                 fi
5093
5094                 case $cpu in
5095                     loongson3*)
5096                         enable loongson3
5097                         enable msa
5098                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5099                     ;;
5100                     loongson2e)
5101                         enable loongson2
5102                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5103                     ;;
5104                     loongson2f)
5105                         enable loongson2
5106                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5107                     ;;
5108                 esac
5109             ;;
5110             *)
5111                 warn "unknown MIPS CPU"
5112             ;;
5113         esac
5114
5115     else
5116         disable mipsdsp
5117         disable mipsdspr2
5118         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5119         warn 'generic cpu selected'
5120     fi
5121
5122 elif enabled ppc; then
5123
5124     disable ldbrx
5125
5126     case $(tolower $cpu) in
5127         601|ppc601|powerpc601)
5128             cpuflags="-mcpu=601"
5129             disable altivec
5130         ;;
5131         603*|ppc603*|powerpc603*)
5132             cpuflags="-mcpu=603"
5133             disable altivec
5134         ;;
5135         604*|ppc604*|powerpc604*)
5136             cpuflags="-mcpu=604"
5137             disable altivec
5138         ;;
5139         g3|75*|ppc75*|powerpc75*)
5140             cpuflags="-mcpu=750"
5141             disable altivec
5142         ;;
5143         g4|745*|ppc745*|powerpc745*)
5144             cpuflags="-mcpu=7450"
5145             disable vsx
5146         ;;
5147         74*|ppc74*|powerpc74*)
5148             cpuflags="-mcpu=7400"
5149             disable vsx
5150         ;;
5151         g5|970|ppc970|powerpc970)
5152             cpuflags="-mcpu=970"
5153             disable vsx
5154         ;;
5155         power[3-6]*)
5156             cpuflags="-mcpu=$cpu"
5157             disable vsx
5158         ;;
5159         power[7-8]*)
5160             cpuflags="-mcpu=$cpu"
5161         ;;
5162         cell)
5163             cpuflags="-mcpu=cell"
5164             enable ldbrx
5165             disable vsx
5166         ;;
5167         e500mc)
5168             cpuflags="-mcpu=e500mc"
5169             disable altivec
5170         ;;
5171         e500v2)
5172             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5173             disable altivec
5174             disable dcbzl
5175         ;;
5176         e500)
5177             cpuflags="-mcpu=8540 -mhard-float"
5178             disable altivec
5179             disable dcbzl
5180         ;;
5181     esac
5182
5183 elif enabled sparc; then
5184
5185     case $cpu in
5186         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5187             cpuflags="-mcpu=$cpu"
5188         ;;
5189         ultrasparc*|niagara[234])
5190             cpuflags="-mcpu=$cpu"
5191         ;;
5192     esac
5193
5194 elif enabled x86; then
5195
5196     case $cpu in
5197         i[345]86|pentium)
5198             cpuflags="-march=$cpu"
5199             disable i686
5200             disable mmx
5201         ;;
5202         # targets that do NOT support nopl and conditional mov (cmov)
5203         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5204             cpuflags="-march=$cpu"
5205             disable i686
5206         ;;
5207         # targets that do support nopl and conditional mov (cmov)
5208         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5209         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5210         |amdfam10|barcelona|b[dt]ver*|znver*)
5211             cpuflags="-march=$cpu"
5212             enable i686
5213             enable fast_cmov
5214         ;;
5215         # targets that do support conditional mov but on which it's slow
5216         pentium4|pentium4m|prescott|nocona)
5217             cpuflags="-march=$cpu"
5218             enable i686
5219             disable fast_cmov
5220         ;;
5221     esac
5222
5223 fi
5224
5225 if [ "$cpu" != generic ]; then
5226     add_cflags  $cpuflags
5227     add_asflags $cpuflags
5228     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5229 fi
5230
5231 # compiler sanity check
5232 test_exec <<EOF
5233 int main(void){ return 0; }
5234 EOF
5235 if test "$?" != 0; then
5236     echo "$cc is unable to create an executable file."
5237     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5238         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5239         echo "Only do this if you know what cross compiling means."
5240     fi
5241     die "C compiler test failed."
5242 fi
5243
5244 add_cppflags -D_ISOC99_SOURCE
5245 add_cxxflags -D__STDC_CONSTANT_MACROS
5246 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5247
5248 # some compilers silently accept -std=c11, so we also need to check that the
5249 # version macro is defined properly
5250 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5251     add_cflags -std=c11 ||
5252     check_cflags -std=c99
5253
5254 check_cppflags -D_FILE_OFFSET_BITS=64
5255 check_cppflags -D_LARGEFILE_SOURCE
5256
5257 add_host_cppflags -D_ISOC99_SOURCE
5258 check_host_cflags -std=c99
5259 check_host_cflags -Wall
5260 check_host_cflags $host_cflags_speed
5261
5262 check_64bit(){
5263     arch32=$1
5264     arch64=$2
5265     expr=${3:-'sizeof(void *) > 4'}
5266     test_code cc "" "int test[2*($expr) - 1]" &&
5267         subarch=$arch64 || subarch=$arch32
5268     enable $subarch
5269 }
5270
5271 case "$arch" in
5272     aarch64|alpha|ia64)
5273         enabled shared && enable_weak pic
5274     ;;
5275     mips)
5276         check_64bit mips mips64 '_MIPS_SIM > 1'
5277         enabled shared && enable_weak pic
5278     ;;
5279     parisc)
5280         check_64bit parisc parisc64
5281         enabled shared && enable_weak pic
5282     ;;
5283     ppc)
5284         check_64bit ppc ppc64
5285         enabled shared && enable_weak pic
5286     ;;
5287     s390)
5288         check_64bit s390 s390x
5289         enabled shared && enable_weak pic
5290     ;;
5291     sparc)
5292         check_64bit sparc sparc64
5293         enabled shared && enable_weak pic
5294     ;;
5295     x86)
5296         check_64bit x86_32 x86_64
5297         # Treat x32 as x64 for now. Note it also needs pic if shared
5298         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5299             subarch=x86_64 && enable x86_64 && disable x86_32
5300         if enabled x86_64; then
5301             enabled shared && enable_weak pic
5302             objformat=elf64
5303         fi
5304     ;;
5305 esac
5306
5307 # OS specific
5308 case $target_os in
5309     aix)
5310         SHFLAGS=-shared
5311         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5312         enabled shared && add_ldflags -Wl,-brtl
5313         arflags='-Xany -r -c'
5314         striptype=""
5315         ;;
5316     android)
5317         disable symver
5318         enable section_data_rel_ro
5319         add_cflags -fPIE
5320         add_ldexeflags -fPIE -pie
5321         SLIB_INSTALL_NAME='$(SLIBNAME)'
5322         SLIB_INSTALL_LINKS=
5323         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5324         ;;
5325     haiku)
5326         prefix_default="/boot/common"
5327         network_extralibs="-lnetwork"
5328         host_extralibs=
5329         ;;
5330     sunos)
5331         SHFLAGS='-shared -Wl,-h,$$(@F)'
5332         enabled x86 && append SHFLAGS -mimpure-text
5333         network_extralibs="-lsocket -lnsl"
5334         add_cppflags -D__EXTENSIONS__
5335         # When using suncc to build, the Solaris linker will mark
5336         # an executable with each instruction set encountered by
5337         # the Solaris assembler.  As our libraries contain their own
5338         # guards for processor-specific code, instead suppress
5339         # generation of the HWCAPS ELF section on Solaris x86 only.
5340         enabled_all suncc x86 &&
5341             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5342             add_ldflags -Wl,-M,mapfile
5343         nm_default='nm -P -g'
5344         striptype=""
5345         version_script='-M'
5346         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5347         ;;
5348     netbsd)
5349         disable symver
5350         oss_indev_extralibs="-lossaudio"
5351         oss_outdev_extralibs="-lossaudio"
5352         enabled gcc || check_ldflags -Wl,-zmuldefs
5353         ;;
5354     openbsd|bitrig)
5355         disable symver
5356         enable section_data_rel_ro
5357         striptype=""
5358         SHFLAGS='-shared'
5359         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5360         SLIB_INSTALL_LINKS=
5361         oss_indev_extralibs="-lossaudio"
5362         oss_outdev_extralibs="-lossaudio"
5363         ;;
5364     dragonfly)
5365         disable symver
5366         ;;
5367     freebsd)
5368         ;;
5369     bsd/os)
5370         add_extralibs -lpoll -lgnugetopt
5371         strip="strip -d"
5372         ;;
5373     darwin)
5374         enabled ppc && add_asflags -force_cpusubtype_ALL
5375         install_name_dir_default='$(SHLIBDIR)'
5376         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5377         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5378         strip="${strip} -x"
5379         add_ldflags -Wl,-dynamic,-search_paths_first
5380         check_cflags -Werror=partial-availability
5381         SLIBSUF=".dylib"
5382         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5383         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5384         enabled x86_64 && objformat="macho64" || objformat="macho32"
5385         enabled_any pic shared x86_64 ||
5386             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5387         check_headers dispatch/dispatch.h &&
5388             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5389         if test -n "$sysroot"; then
5390             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5391             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5392         fi
5393         version_script='-exported_symbols_list'
5394         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5395         # Workaround for Xcode 11 -fstack-check bug
5396         if enabled clang; then
5397             clang_version=$($cc -dumpversion)
5398             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5399         fi
5400         ;;
5401     msys*)
5402         die "Native MSYS builds are discouraged, please use the MINGW environment."
5403         ;;
5404     mingw32*|mingw64*)
5405         target_os=mingw32
5406         LIBTARGET=i386
5407         if enabled x86_64; then
5408             LIBTARGET="i386:x86-64"
5409         elif enabled arm; then
5410             LIBTARGET="arm"
5411         elif enabled aarch64; then
5412             LIBTARGET="arm64"
5413         fi
5414         if enabled shared; then
5415             # Cannot build both shared and static libs when using dllimport.
5416             disable static
5417         fi
5418         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5419         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5420         shlibdir_default="$bindir_default"
5421         SLIBPREF=""
5422         SLIBSUF=".dll"
5423         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5424         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5425         if test_cmd lib.exe -list; then
5426             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5427             if enabled x86_64; then
5428                 LIBTARGET=x64
5429             fi
5430         else
5431             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5432         fi
5433         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5434         SLIB_INSTALL_LINKS=
5435         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5436         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5437         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5438         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5439         enabled x86_64 && objformat="win64" || objformat="win32"
5440         dlltool="${cross_prefix}dlltool"
5441         ranlib=:
5442         enable dos_paths
5443         check_ldflags -Wl,--nxcompat,--dynamicbase
5444         # Lets work around some stupidity in binutils.
5445         # ld will strip relocations from executables even though we need them
5446         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5447         # however ld then forgets what the entry point should be (oops) so we
5448         # have to manually (re)set it.
5449         if enabled x86_32; then
5450             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5451         elif enabled x86_64; then
5452             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5453             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5454             # Set image base >4GB for extra entropy with HEASLR
5455             add_ldexeflags -Wl,--image-base,0x140000000
5456             append SHFLAGS -Wl,--image-base,0x180000000
5457         fi
5458         ;;
5459     win32|win64)
5460         disable symver
5461         if enabled shared; then
5462             # Link to the import library instead of the normal static library
5463             # for shared libs.
5464             LD_LIB='%.lib'
5465             # Cannot build both shared and static libs with MSVC or icl.
5466             disable static
5467         fi
5468         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5469         shlibdir_default="$bindir_default"
5470         SLIBPREF=""
5471         SLIBSUF=".dll"
5472         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5473         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5474         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5475         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5476         SLIB_INSTALL_LINKS=
5477         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5478         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5479         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5480         enabled x86_64 && objformat="win64" || objformat="win32"
5481         ranlib=:
5482         enable dos_paths
5483         ;;
5484     cygwin*)
5485         target_os=cygwin
5486         shlibdir_default="$bindir_default"
5487         SLIBPREF="cyg"
5488         SLIBSUF=".dll"
5489         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5490         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5491         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5492         SLIB_INSTALL_LINKS=
5493         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5494         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5495         enabled x86_64 && objformat="win64" || objformat="win32"
5496         enable dos_paths
5497         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5498         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5499         ;;
5500     *-dos|freedos|opendos)
5501         network_extralibs="-lsocket"
5502         objformat="coff"
5503         enable dos_paths
5504         ;;
5505     linux)
5506         enable section_data_rel_ro
5507         enabled_any arm aarch64 && enable_weak linux_perf
5508         ;;
5509     irix*)
5510         target_os=irix
5511         ranlib="echo ignoring ranlib"
5512         ;;
5513     os/2*)
5514         strip="lxlite -CS"
5515         striptype=""
5516         objformat="aout"
5517         add_cppflags -D_GNU_SOURCE
5518         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5519         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5520         LIBSUF="_s.a"
5521         SLIBPREF=""
5522         SLIBSUF=".dll"
5523         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5524         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5525         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5526             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5527             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5528             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5529             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5530         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5531             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5532         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5533         SLIB_INSTALL_LINKS=
5534         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5535         enable dos_paths
5536         enable_weak os2threads
5537         ;;
5538     gnu/kfreebsd)
5539         add_cppflags -D_BSD_SOURCE
5540         ;;
5541     gnu)
5542         ;;
5543     qnx)
5544         add_cppflags -D_QNX_SOURCE
5545         network_extralibs="-lsocket"
5546         ;;
5547     symbian)
5548         SLIBSUF=".dll"
5549         enable dos_paths
5550         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5551         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5552         add_ldflags -Wl,--target1-abs,--no-undefined \
5553                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5554                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5555         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5556                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5557                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5558         ;;
5559     minix)
5560         ;;
5561     none)
5562         ;;
5563     *)
5564         die "Unknown OS '$target_os'."
5565         ;;
5566 esac
5567
5568 # test if creating links works
5569 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5570 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5571 mkdir "$link_dest"
5572 $ln_s "$link_dest" "$link_name"
5573 touch "$link_dest/test_file"
5574 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5575     # create link to source path
5576     [ -e src ] && rm src
5577     $ln_s "$source_path" src
5578     source_link=src
5579 else
5580     # creating directory links doesn't work
5581     # fall back to using the full source path
5582     source_link="$source_path"
5583 fi
5584 # cleanup
5585 rm -r "$link_dest"
5586 rm -r "$link_name"
5587
5588 # determine libc flavour
5589
5590 probe_libc(){
5591     pfx=$1
5592     pfx_no_=${pfx%_}
5593     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5594     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5595         eval ${pfx}libc_type=uclibc
5596         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5597     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5598         eval ${pfx}libc_type=glibc
5599         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5600     # MinGW headers can be installed on Cygwin, so check for newlib first.
5601     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5602         eval ${pfx}libc_type=newlib
5603         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5604     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5605     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5606         eval ${pfx}libc_type=mingw64
5607         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5608             add_compat msvcrt/snprintf.o
5609             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5610         fi
5611         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5612         eval test \$${pfx_no_}cc_type = "gcc" &&
5613             add_${pfx}cppflags -D__printf__=__gnu_printf__
5614         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5615             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5616         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5617     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5618          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5619         eval ${pfx}libc_type=mingw32
5620         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5621             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5622             die "ERROR: MinGW32 runtime version must be >= 3.15."
5623         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5624         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5625             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5626         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5627             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5628         eval test \$${pfx_no_}cc_type = "gcc" &&
5629             add_${pfx}cppflags -D__printf__=__gnu_printf__
5630         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5631     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5632         eval ${pfx}libc_type=msvcrt
5633         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5634             if [ "$pfx" = host_ ]; then
5635                 add_host_cppflags -Dsnprintf=_snprintf
5636             else
5637                 add_compat strtod.o strtod=avpriv_strtod
5638                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5639                                              _snprintf=avpriv_snprintf  \
5640                                              vsnprintf=avpriv_vsnprintf
5641             fi
5642         fi
5643         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5644         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5645         # 0x601 by default unless something else is set by the user.
5646         # This can easily lead to us detecting functions only present
5647         # in such new versions and producing binaries requiring windows 7.0.
5648         # Therefore explicitly set the default to Vista unless the user has
5649         # set something else on the command line.
5650         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5651         # family. For these cases, configure is free to use any functions
5652         # found in the SDK headers by default. (Alternatively, we could force
5653         # _WIN32_WINNT to 0x0602 in that case.)
5654         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5655             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5656 #ifdef WINAPI_FAMILY
5657 #include <winapifamily.h>
5658 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5659 #error not desktop
5660 #endif
5661 #endif
5662 EOF
5663         if [ "$pfx" = "" ]; then
5664             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5665             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5666         fi
5667     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5668         eval ${pfx}libc_type=klibc
5669     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5670         eval ${pfx}libc_type=bionic
5671     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5672         eval ${pfx}libc_type=solaris
5673         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5674     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5675         eval ${pfx}libc_type=djgpp
5676         add_cppflags -U__STRICT_ANSI__
5677         add_cflags "-include $source_path/compat/djgpp/math.h"
5678         add_compat djgpp/math.o
5679     fi
5680     test_${pfx}cc <<EOF
5681 #include <time.h>
5682 void *v = localtime_r;
5683 EOF
5684 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5685 #include <time.h>
5686 void *v = localtime_r;
5687 EOF
5688
5689     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5690 }
5691
5692 probe_libc
5693 probe_libc host_
5694
5695 # hacks for compiler/libc/os combinations
5696
5697 case $libc_type in
5698     bionic)
5699         add_compat strtod.o strtod=avpriv_strtod
5700         ;;
5701 esac
5702
5703 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5704     add_cppflags '-I\$(SRC_PATH)/compat/float'
5705
5706 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5707
5708 set_default libdir
5709 : ${shlibdir_default:="$libdir"}
5710 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5711
5712 set_default $PATHS_LIST
5713 set_default nm
5714
5715 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5716
5717 enable_weak_pic() {
5718     disabled pic && return
5719     enable pic
5720     add_cppflags -DPIC
5721     case "$target_os" in
5722     mingw*|cygwin*|win*)
5723         ;;
5724     *)
5725         add_cflags -fPIC
5726         add_asflags -fPIC
5727         ;;
5728     esac
5729 }
5730
5731 enabled pic && enable_weak_pic
5732
5733 test_cc <<EOF || die "Symbol mangling check failed."
5734 int ff_extern;
5735 EOF
5736 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5737 extern_prefix=${sym%%ff_extern*}
5738
5739 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5740
5741 for restrict_keyword in restrict __restrict__ __restrict ""; do
5742     test_code cc "" "char * $restrict_keyword p" && break
5743 done
5744
5745 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5746
5747 # The global variable ensures the bits appear unchanged in the object file.
5748 test_cc <<EOF || die "endian test failed"
5749 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5750 EOF
5751 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5752
5753 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5754
5755 if ! enabled ppc64 || enabled bigendian; then
5756     disable vsx
5757 fi
5758
5759 check_gas() {
5760     log "check_gas using '$as' as AS"
5761     # :vararg is used on aarch64, arm and ppc altivec
5762     check_as vararg "
5763 .macro m n, y:vararg=0
5764 \n: .int \y
5765 .endm
5766 m x" || return 1
5767     # .altmacro is only used in arm asm
5768     ! enabled arm || check_as gnu_as ".altmacro"
5769 }
5770
5771 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5772     nogas=:
5773     enabled_any arm aarch64 && nogas=die
5774     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5775     as_noop=-v
5776
5777     case $as_type in
5778         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5779         gcc)  gaspp_as_type=gas ;;
5780         *)    gaspp_as_type=$as_type ;;
5781     esac
5782
5783     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5784
5785     test "${as#*gas-preprocessor.pl}" != "$as" ||
5786     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5787         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5788
5789     if ! check_gas ; then
5790         as=${gas:=$as}
5791         check_gas || \
5792             $nogas "GNU assembler not found, install/update gas-preprocessor"
5793     fi
5794
5795     check_as as_func ".func test
5796                       .endfunc"
5797 fi
5798
5799 check_inline_asm inline_asm_labels '"1:\n"'
5800
5801 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5802
5803 if enabled aarch64; then
5804     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5805     # internal assembler in clang 3.3 does not support this instruction
5806     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5807     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5808
5809     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5810
5811 elif enabled alpha; then
5812
5813     check_cflags -mieee
5814
5815 elif enabled arm; then
5816
5817     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5818     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5819 float func(float a, float b){ return a+b; }
5820 EOF
5821     enabled thumb && check_cflags -mthumb || check_cflags -marm
5822
5823     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5824         :
5825     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5826         :
5827     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5828         case "${cross_prefix:-$cc}" in
5829             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5830             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5831 __asm__ (".eabi_attribute 28, 1");
5832 int main(void) { return 0; }
5833 EOF
5834         esac
5835         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5836     fi
5837
5838     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5839     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5840     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5841     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5842     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5843     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5844     enabled setend  && check_insn setend  'setend be'
5845
5846     [ $target_os = linux ] || [ $target_os = android ] ||
5847         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5848             $ARCH_EXT_LIST_ARM
5849
5850     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5851
5852     check_as as_arch_directive ".arch armv7-a"
5853     check_as as_dn_directive   "ra .dn d0.i16"
5854     check_as as_fpu_directive  ".fpu neon"
5855
5856     # llvm's integrated assembler supports .object_arch from llvm 3.5
5857     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5858         check_as as_object_arch ".object_arch armv4"
5859
5860     # MS armasm fails to assemble our PIC constructs
5861     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5862
5863 elif enabled mips; then
5864
5865     # Check toolchain ISA level
5866     if enabled mips64; then
5867         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5868             disable mips64r2
5869
5870         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5871
5872         disable mips32r6 && disable mips32r5 && disable mips32r2
5873     else
5874         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5875             disable mips32r5 && disable mips32r2
5876
5877         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5878         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5879
5880         disable mips64r6 && disable mips64r5 && disable mips64r2
5881     fi
5882
5883     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5884     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5885
5886     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5887     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5888
5889     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5890     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5891     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5892
5893     # loongson2 have no switch cflag so we can only probe toolchain ability
5894     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5895
5896     # loongson3 is paired with MMI
5897     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5898
5899     # MMI can be detected at runtime too
5900     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5901
5902     if enabled bigendian && enabled msa; then
5903         disable msa
5904     fi
5905
5906 elif enabled parisc; then
5907
5908     if enabled gcc; then
5909         case $($cc -dumpversion) in
5910             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5911         esac
5912     fi
5913
5914 elif enabled ppc; then
5915
5916     enable local_aligned
5917
5918     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5919     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5920     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5921     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5922
5923     if enabled altivec; then
5924         check_cflags -maltivec -mabi=altivec
5925
5926         # check if our compiler supports Motorola AltiVec C API
5927         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5928                                     vector signed int v2 = (vector signed int) { 1 };
5929                                     v1 = vec_add(v1, v2);"
5930
5931         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5932     fi
5933
5934     if enabled vsx; then
5935         check_cflags -mvsx &&
5936         check_cc vsx altivec.h "int v[4] = { 0 };
5937                                 vector signed int v1 = vec_vsx_ld(0, v);"
5938     fi
5939
5940     if enabled power8; then
5941         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5942     fi
5943
5944 elif enabled x86; then
5945
5946     check_builtin rdtsc    intrin.h   "__rdtsc()"
5947     check_builtin mm_empty mmintrin.h "_mm_empty()"
5948
5949     enable local_aligned
5950
5951     # check whether EBP is available on x86
5952     # As 'i' is stored on the stack, this program will crash
5953     # if the base pointer is used to access it because the
5954     # base pointer is cleared in the inline assembly code.
5955     check_exec_crash <<EOF && enable ebp_available
5956 volatile int i=0;
5957 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5958 return i;
5959 EOF
5960
5961     # check whether EBX is available on x86
5962     check_inline_asm ebx_available '""::"b"(0)' &&
5963         check_inline_asm ebx_available '"":::"%ebx"'
5964
5965     # check whether xmm clobbers are supported
5966     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5967
5968     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5969         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5970
5971     # check whether binutils is new enough to compile SSSE3/MMXEXT
5972     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5973     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5974
5975     probe_x86asm(){
5976         x86asmexe_probe=$1
5977         if test_cmd $x86asmexe_probe -v; then
5978             x86asmexe=$x86asmexe_probe
5979             x86asm_type=nasm
5980             x86asm_debug="-g -F dwarf"
5981             X86ASMDEP=
5982             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5983         elif test_cmd $x86asmexe_probe --version; then
5984             x86asmexe=$x86asmexe_probe
5985             x86asm_type=yasm
5986             x86asm_debug="-g dwarf2"
5987             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5988             X86ASM_DEPFLAGS=
5989         fi
5990         check_x86asm x86asm "movbe ecx, [5]"
5991     }
5992
5993     if ! disabled_any asm mmx x86asm; then
5994         disable x86asm
5995         for program in $x86asmexe nasm yasm; do
5996             probe_x86asm $program && break
5997         done
5998         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5999         X86ASMFLAGS="-f $objformat"
6000         enabled pic               && append X86ASMFLAGS "-DPIC"
6001         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6002         case "$objformat" in
6003             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6004         esac
6005
6006         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6007         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6008         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6009         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6010         check_x86asm cpunop          "CPU amdnop"
6011     fi
6012
6013     case "$cpu" in
6014         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6015             disable fast_clz
6016         ;;
6017     esac
6018
6019 fi
6020
6021 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6022
6023 check_ldflags -Wl,--as-needed
6024 check_ldflags -Wl,-z,noexecstack
6025
6026 if ! disabled network; then
6027     check_func getaddrinfo $network_extralibs
6028     check_func inet_aton $network_extralibs
6029
6030     check_type netdb.h "struct addrinfo"
6031     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6032     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6033     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6034     check_type poll.h "struct pollfd"
6035     check_type netinet/sctp.h "struct sctp_event_subscribe"
6036     check_struct "sys/socket.h" "struct msghdr" msg_flags
6037     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6038     check_type netinet/in.h "struct sockaddr_in6"
6039     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6040     check_type "sys/types.h sys/socket.h" socklen_t
6041
6042     # Prefer arpa/inet.h over winsock2
6043     if check_headers arpa/inet.h ; then
6044         check_func closesocket
6045     elif check_headers winsock2.h ; then
6046         check_func_headers winsock2.h closesocket -lws2 &&
6047             network_extralibs="-lws2" ||
6048         { check_func_headers winsock2.h closesocket -lws2_32 &&
6049             network_extralibs="-lws2_32"; } || disable winsock2_h network
6050         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6051
6052         check_type ws2tcpip.h socklen_t
6053         check_type ws2tcpip.h "struct addrinfo"
6054         check_type ws2tcpip.h "struct group_source_req"
6055         check_type ws2tcpip.h "struct ip_mreq_source"
6056         check_type ws2tcpip.h "struct ipv6_mreq"
6057         check_type winsock2.h "struct pollfd"
6058         check_struct winsock2.h "struct sockaddr" sa_len
6059         check_type ws2tcpip.h "struct sockaddr_in6"
6060         check_type ws2tcpip.h "struct sockaddr_storage"
6061     else
6062         disable network
6063     fi
6064 fi
6065
6066 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6067 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6068 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6069 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6070 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6071 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6072 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6073
6074 case "$custom_allocator" in
6075     jemalloc)
6076         # jemalloc by default does not use a prefix
6077         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6078     ;;
6079     tcmalloc)
6080         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6081         malloc_prefix=tc_
6082     ;;
6083 esac
6084
6085 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6086 check_func  ${malloc_prefix}memalign            && enable memalign
6087 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6088
6089 check_func  access
6090 check_func_headers stdlib.h arc4random
6091 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6092 check_func  fcntl
6093 check_func  fork
6094 check_func  gethrtime
6095 check_func  getopt
6096 check_func  getrusage
6097 check_func  gettimeofday
6098 check_func  isatty
6099 check_func  mkstemp
6100 check_func  mmap
6101 check_func  mprotect
6102 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6103 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6104 check_func  sched_getaffinity
6105 check_func  setrlimit
6106 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6107 check_func  strerror_r
6108 check_func  sysconf
6109 check_func  sysctl
6110 check_func  usleep
6111
6112 check_func_headers conio.h kbhit
6113 check_func_headers io.h setmode
6114 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6115 check_func_headers mach/mach_time.h mach_absolute_time
6116 check_func_headers stdlib.h getenv
6117 check_func_headers sys/stat.h lstat
6118
6119 check_func_headers windows.h GetModuleHandle
6120 check_func_headers windows.h GetProcessAffinityMask
6121 check_func_headers windows.h GetProcessTimes
6122 check_func_headers windows.h GetStdHandle
6123 check_func_headers windows.h GetSystemTimeAsFileTime
6124 check_func_headers windows.h LoadLibrary
6125 check_func_headers windows.h MapViewOfFile
6126 check_func_headers windows.h PeekNamedPipe
6127 check_func_headers windows.h SetConsoleTextAttribute
6128 check_func_headers windows.h SetConsoleCtrlHandler
6129 check_func_headers windows.h SetDllDirectory
6130 check_func_headers windows.h Sleep
6131 check_func_headers windows.h VirtualAlloc
6132 check_func_headers glob.h glob
6133 enabled xlib &&
6134     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6135
6136 check_headers direct.h
6137 check_headers dirent.h
6138 check_headers dxgidebug.h
6139 check_headers dxva.h
6140 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6141 check_headers io.h
6142 check_headers linux/perf_event.h
6143 check_headers libcrystalhd/libcrystalhd_if.h
6144 check_headers malloc.h
6145 check_headers mftransform.h
6146 check_headers net/udplite.h
6147 check_headers poll.h
6148 check_headers sys/param.h
6149 check_headers sys/resource.h
6150 check_headers sys/select.h
6151 check_headers sys/time.h
6152 check_headers sys/un.h
6153 check_headers termios.h
6154 check_headers unistd.h
6155 check_headers valgrind/valgrind.h
6156 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6157 check_headers windows.h
6158 check_headers X11/extensions/XvMClib.h
6159 check_headers asm/types.h
6160
6161 # it seems there are versions of clang in some distros that try to use the
6162 # gcc headers, which explodes for stdatomic
6163 # so we also check that atomics actually work here
6164 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6165
6166 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6167 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6168     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6169 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6170 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6171 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6172
6173 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6174 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6175 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6176
6177 enabled appkit       && check_apple_framework AppKit
6178 enabled audiotoolbox && check_apple_framework AudioToolbox
6179 enabled avfoundation && check_apple_framework AVFoundation
6180 enabled coreimage    && check_apple_framework CoreImage
6181 enabled videotoolbox && check_apple_framework VideoToolbox
6182
6183 check_apple_framework CoreFoundation
6184 check_apple_framework CoreMedia
6185 check_apple_framework CoreVideo
6186 check_apple_framework CoreAudio
6187
6188 enabled avfoundation && {
6189     disable coregraphics applicationservices
6190     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6191     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6192
6193 enabled videotoolbox && {
6194     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6195     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6196     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6197     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6198     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6199     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6200 }
6201
6202 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6203
6204 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6205 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6206 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6207 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6208 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6209 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6210
6211 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6212 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6213
6214 if [ -z "$nvccflags" ]; then
6215     nvccflags=$nvccflags_default
6216 fi
6217
6218 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6219     nvccflags="$nvccflags -m64"
6220 else
6221     nvccflags="$nvccflags -m32"
6222 fi
6223
6224 if enabled cuda_nvcc; then
6225     nvccflags="$nvccflags -ptx"
6226 else
6227     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6228     check_nvcc cuda_llvm
6229 fi
6230
6231 if ! disabled ffnvcodec; then
6232     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6233     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6234       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6235       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6236       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6237 fi
6238
6239 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6240
6241 if ! disabled w32threads && ! enabled pthreads; then
6242     check_func_headers "windows.h process.h" _beginthreadex &&
6243         check_type "windows.h" CONDITION_VARIABLE &&
6244         check_type "windows.h" INIT_ONCE &&
6245         enable w32threads || disable w32threads
6246     if ! enabled w32threads && enabled winrt; then
6247         check_func_headers "windows.h" CreateThread &&
6248             enable w32threads || disable w32threads
6249     fi
6250 fi
6251
6252 # check for some common methods of building with pthread support
6253 # do this before the optional library checks as some of them require pthreads
6254 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6255     if check_lib pthreads pthread.h pthread_join   -pthread &&
6256        check_lib pthreads pthread.h pthread_create -pthread; then
6257         add_cflags -pthread
6258     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6259          check_lib pthreads pthread.h pthread_create -pthreads; then
6260         add_cflags -pthreads
6261     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6262          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6263         add_cflags -ldl -pthread
6264     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6265          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6266         :
6267     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6268          check_lib pthreads pthread.h pthread_create -lpthread; then
6269         :
6270     elif check_func pthread_join && check_func pthread_create; then
6271         enable pthreads
6272     fi
6273     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6274
6275     if enabled pthreads; then
6276         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6277         check_func pthread_cancel $pthreads_extralibs
6278     fi
6279 fi
6280
6281 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6282                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6283 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6284 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6285
6286 # On some systems dynamic loading requires no extra linker flags
6287 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6288
6289 check_lib libm math.h sin -lm
6290
6291 atan2f_args=2
6292 copysign_args=2
6293 hypot_args=2
6294 ldexpf_args=2
6295 powf_args=2
6296
6297 for func in $MATH_FUNCS; do
6298     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6299 done
6300
6301 for func in $COMPLEX_FUNCS; do
6302     eval check_complexfunc $func \${${func}_args:-1}
6303 done
6304
6305 # these are off by default, so fail if requested and not available
6306 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6307 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6308 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6309 enabled decklink          && { require_headers DeckLinkAPI.h &&
6310                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6311 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6312 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6313 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6314 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6315 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6316 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6317 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6318                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6319                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6320 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6321 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6322 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6323 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6324 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6325 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6326                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6327                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6328 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6329 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6330 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6331 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6332 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6333 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6334 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6335                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6336                                  warn "using libfdk without pkg-config"; } }
6337 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"
6338 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6339 enabled fontconfig        && enable libfontconfig
6340 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6341 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6342 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6343 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6344 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6345                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6346 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6347                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6348                                done || die "ERROR: libgsm not found"; }
6349 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6350 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6351 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6352 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6353 # While it may appear that require is being used as a pkg-config
6354 # fallback for libmfx, it is actually being used to detect a different
6355 # installation route altogether.  If libmfx is installed via the Intel
6356 # Media SDK or Intel Media Server Studio, these don't come with
6357 # pkg-config support.  Instead, users should make sure that the build
6358 # can find the libraries and headers through other means.
6359 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6360                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6361 if enabled libmfx; then
6362    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6363 fi
6364
6365 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6366 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6367 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6368                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6369 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6370                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6371                                die "ERROR: libnpp not found"; }
6372 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6373 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6374 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6375                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6376                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6377                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6378 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6379 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6380                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6381 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6382 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6383 enabled libopus           && {
6384     enabled libopus_decoder && {
6385         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6386     }
6387     enabled libopus_encoder && {
6388         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6389     }
6390 }
6391 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6392 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6393 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6394 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6395 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6396 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6397 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6398 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6399                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6400 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6401 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6402 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6403 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6404 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6405 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6406 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6407 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6408 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6409 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6410 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6411                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6412                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6413 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6414 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6415 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6416 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6417 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6418                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6419
6420 enabled libvpx            && {
6421     enabled libvpx_vp8_decoder && {
6422         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6423             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"
6424     }
6425     enabled libvpx_vp8_encoder && {
6426         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6427             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"
6428     }
6429     enabled libvpx_vp9_decoder && {
6430         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6431             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"
6432     }
6433     enabled libvpx_vp9_encoder && {
6434         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6435             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"
6436     }
6437     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6438         die "libvpx enabled but no supported decoders found"
6439     fi
6440 }
6441
6442 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6443 enabled libwebp           && {
6444     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6445     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6446 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6447                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6448                                  warn "using libx264 without pkg-config"; } } &&
6449                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6450                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6451 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6452                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6453 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6454 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6455 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6456 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6457 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6458 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6459                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6460                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6461 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6462 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6463                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6464                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6465                                die "ERROR: mbedTLS not found"; }
6466 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6467 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6468                                { ! enabled cross_compile &&
6469                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6470                                  add_ldflags -L/opt/vc/lib/ &&
6471                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6472                                die "ERROR: mmal not found" &&
6473                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6474 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6475                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6476                                die "ERROR: openal not found"; } &&
6477                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6478                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6479 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6480                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6481                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6482                                die "ERROR: opencl not found"; } &&
6483                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6484                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6485                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6486 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6487                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6488                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6489                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6490                                die "ERROR: opengl not found."
6491                              }
6492 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6493                                { ! enabled cross_compile &&
6494                                  add_cflags -isystem/opt/vc/include/IL &&
6495                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6496                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6497                              enable omx
6498 enabled omx               && require_headers OMX_Core.h
6499 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6500                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6501                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6502                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6503                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6504                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6505                                die "ERROR: openssl not found"; }
6506 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6507 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6508                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6509                                { enabled libdrm ||
6510                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6511                              }
6512 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6513
6514
6515 if enabled gcrypt; then
6516     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6517     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6518         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6519         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6520         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6521             die "ERROR: gcrypt not found"
6522         add_cflags $gcrypt_cflags
6523     else
6524         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6525     fi
6526 fi
6527
6528 if enabled sdl2; then
6529     SDL2_CONFIG="${cross_prefix}sdl2-config"
6530     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6531     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6532         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6533         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6534         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6535         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6536         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6537             enable sdl2
6538     fi
6539     if test $target_os = "mingw32"; then
6540         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6541     fi
6542 fi
6543
6544 if enabled decklink; then
6545     case $target_os in
6546         mingw32*|mingw64*|win32|win64)
6547             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6548             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6549             ;;
6550     esac
6551 fi
6552
6553 enabled securetransport &&
6554     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6555     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6556         disable securetransport
6557
6558 enabled securetransport &&
6559     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6560
6561 enabled schannel &&
6562     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6563     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6564     schannel_extralibs="-lsecur32" ||
6565         disable schannel
6566
6567 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6568 enabled makeinfo \
6569     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6570     && enable makeinfo_html || disable makeinfo_html
6571 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6572 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6573 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6574 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6575
6576 # check V4L2 codecs available in the API
6577 if enabled v4l2_m2m; then
6578     check_headers linux/fb.h
6579     check_headers linux/videodev2.h
6580     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6581     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6582     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6583     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6584     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6585     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6586     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6587     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6588     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6589     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6590     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6591 fi
6592
6593 check_headers sys/videoio.h
6594 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6595
6596 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6597 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6598 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6599 # w32api 3.12 had it defined wrong
6600 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6601
6602 check_type "dshow.h" IBaseFilter
6603
6604 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6605 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6606     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6607     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6608     check_headers "dev/ic/bt8xx.h"
6609
6610 if check_struct sys/soundcard.h audio_buf_info bytes; then
6611     enable_sanitized sys/soundcard.h
6612 else
6613     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6614     #include <sys/soundcard.h>
6615     audio_buf_info abc;
6616 EOF
6617 fi
6618
6619 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6620                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6621
6622 enabled libjack &&
6623     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6624
6625 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6626
6627 if enabled libcdio; then
6628     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6629     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6630     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6631     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6632     die "ERROR: No usable libcdio/cdparanoia found"
6633 fi
6634
6635 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6636     disable libxcb_shm libxcb_shape libxcb_xfixes
6637
6638 if enabled libxcb; then
6639     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6640     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6641     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6642 fi
6643
6644 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6645
6646 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6647 # the desktop api partition
6648 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6649 #ifdef WINAPI_FAMILY
6650 #include <winapifamily.h>
6651 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6652 #error desktop, not uwp
6653 #else
6654 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6655 #endif
6656 #else
6657 #error no family set
6658 #endif
6659 EOF
6660
6661 enabled libdrm &&
6662     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6663
6664 enabled vaapi &&
6665     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6666
6667 if enabled vaapi; then
6668     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6669
6670     if enabled xlib; then
6671         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6672     fi
6673
6674     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6675
6676     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6677     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6678     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6679     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6680     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6681     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6682     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6683     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6684 fi
6685
6686 if enabled_all opencl libdrm ; then
6687     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6688         enable opencl_drm_beignet
6689     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6690         enable opencl_drm_arm
6691 fi
6692
6693 if enabled_all opencl vaapi ; then
6694     if enabled opencl_drm_beignet ; then
6695         enable opencl_vaapi_beignet
6696     else
6697         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6698             enable opencl_vaapi_intel_media
6699     fi
6700 fi
6701
6702 if enabled_all opencl dxva2 ; then
6703     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6704         enable opencl_dxva2
6705 fi
6706
6707 if enabled_all opencl d3d11va ; then
6708     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6709         enable opencl_d3d11
6710 fi
6711
6712 enabled vdpau &&
6713     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6714
6715 enabled vdpau &&
6716     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6717
6718 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6719
6720 enabled vulkan &&
6721     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6722
6723 if enabled x86; then
6724     case $target_os in
6725         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6726             ;;
6727         *)
6728             disable ffnvcodec cuvid nvdec nvenc
6729             ;;
6730     esac
6731 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6732     case $target_os in
6733         linux)
6734             ;;
6735         *)
6736             disable ffnvcodec cuvid nvdec nvenc
6737             ;;
6738     esac
6739 else
6740     disable ffnvcodec cuvid nvdec nvenc
6741 fi
6742
6743 enabled ffnvcodec && enable cuda
6744
6745 enabled nvenc &&
6746     test_cc -I$source_path <<EOF || disable nvenc
6747 #include <ffnvcodec/nvEncodeAPI.h>
6748 NV_ENCODE_API_FUNCTION_LIST flist;
6749 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6750 int main(void) { return 0; }
6751 EOF
6752
6753 enabled amf &&
6754     check_cpp_condition amf "AMF/core/Version.h" \
6755         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6756
6757 # Funny iconv installations are not unusual, so check it after all flags have been set
6758 if enabled libc_iconv; then
6759     check_func_headers iconv.h iconv
6760 elif enabled iconv; then
6761     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6762 fi
6763
6764 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6765
6766 # add some useful compiler flags if supported
6767 check_cflags -Wdeclaration-after-statement
6768 check_cflags -Wall
6769 check_cflags -Wdisabled-optimization
6770 check_cflags -Wpointer-arith
6771 check_cflags -Wredundant-decls
6772 check_cflags -Wwrite-strings
6773 check_cflags -Wtype-limits
6774 check_cflags -Wundef
6775 check_cflags -Wmissing-prototypes
6776 check_cflags -Wno-pointer-to-int-cast
6777 check_cflags -Wstrict-prototypes
6778 check_cflags -Wempty-body
6779
6780 if enabled extra_warnings; then
6781     check_cflags -Wcast-qual
6782     check_cflags -Wextra
6783     check_cflags -Wpedantic
6784 fi
6785
6786 check_disable_warning(){
6787     warning_flag=-W${1#-Wno-}
6788     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6789 }
6790
6791 test_cflags -Werror=unused-command-line-argument &&
6792     append unknown_warning_flags "-Werror=unused-command-line-argument"
6793 test_cflags -Werror=unknown-warning-option &&
6794     append unknown_warning_flags "-Werror=unknown-warning-option"
6795
6796 check_disable_warning -Wno-parentheses
6797 check_disable_warning -Wno-switch
6798 check_disable_warning -Wno-format-zero-length
6799 check_disable_warning -Wno-pointer-sign
6800 check_disable_warning -Wno-unused-const-variable
6801 check_disable_warning -Wno-bool-operation
6802 check_disable_warning -Wno-char-subscripts
6803
6804 check_disable_warning_headers(){
6805     warning_flag=-W${1#-Wno-}
6806     test_cflags $warning_flag && add_cflags_headers $1
6807 }
6808
6809 check_disable_warning_headers -Wno-deprecated-declarations
6810 check_disable_warning_headers -Wno-unused-variable
6811
6812 test_cc <<EOF && enable blocks_extension
6813 void (^block)(void);
6814 EOF
6815
6816 # add some linker flags
6817 check_ldflags -Wl,--warn-common
6818 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6819 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6820 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6821
6822 # add some strip flags
6823 check_stripflags -x
6824
6825 enabled neon_clobber_test &&
6826     check_ldflags -Wl,--wrap,avcodec_open2              \
6827                   -Wl,--wrap,avcodec_decode_audio4      \
6828                   -Wl,--wrap,avcodec_decode_video2      \
6829                   -Wl,--wrap,avcodec_decode_subtitle2   \
6830                   -Wl,--wrap,avcodec_encode_audio2      \
6831                   -Wl,--wrap,avcodec_encode_video2      \
6832                   -Wl,--wrap,avcodec_encode_subtitle    \
6833                   -Wl,--wrap,avcodec_send_packet        \
6834                   -Wl,--wrap,avcodec_receive_packet     \
6835                   -Wl,--wrap,avcodec_send_frame         \
6836                   -Wl,--wrap,avcodec_receive_frame      \
6837                   -Wl,--wrap,swr_convert                \
6838                   -Wl,--wrap,avresample_convert ||
6839     disable neon_clobber_test
6840
6841 enabled xmm_clobber_test &&
6842     check_ldflags -Wl,--wrap,avcodec_open2              \
6843                   -Wl,--wrap,avcodec_decode_audio4      \
6844                   -Wl,--wrap,avcodec_decode_video2      \
6845                   -Wl,--wrap,avcodec_decode_subtitle2   \
6846                   -Wl,--wrap,avcodec_encode_audio2      \
6847                   -Wl,--wrap,avcodec_encode_video2      \
6848                   -Wl,--wrap,avcodec_encode_subtitle    \
6849                   -Wl,--wrap,avcodec_send_packet        \
6850                   -Wl,--wrap,avcodec_receive_packet     \
6851                   -Wl,--wrap,avcodec_send_frame         \
6852                   -Wl,--wrap,avcodec_receive_frame      \
6853                   -Wl,--wrap,swr_convert                \
6854                   -Wl,--wrap,avresample_convert         \
6855                   -Wl,--wrap,sws_scale ||
6856     disable xmm_clobber_test
6857
6858 check_ld "cc" proper_dce <<EOF
6859 extern const int array[512];
6860 static inline int func(void) { return array[0]; }
6861 int main(void) { return 0; }
6862 EOF
6863
6864 if enabled proper_dce; then
6865     echo "X { local: *; };" > $TMPV
6866     if test_ldflags -Wl,${version_script},$TMPV; then
6867         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6868         quotes='""'
6869         test_cc <<EOF && enable symver_asm_label
6870 void ff_foo(void) __asm__ ("av_foo@VERSION");
6871 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6872 EOF
6873         test_cc <<EOF && enable symver_gnu_asm
6874 __asm__(".symver ff_foo,av_foo@VERSION");
6875 void ff_foo(void) {}
6876 EOF
6877     fi
6878 fi
6879
6880 if [ -z "$optflags" ]; then
6881     if enabled small; then
6882         optflags=$cflags_size
6883     elif enabled optimizations; then
6884         optflags=$cflags_speed
6885     else
6886         optflags=$cflags_noopt
6887     fi
6888 fi
6889
6890 check_optflags(){
6891     check_cflags "$@"
6892     enabled lto && check_ldflags "$@"
6893 }
6894
6895 check_optflags $optflags
6896 check_optflags -fno-math-errno
6897 check_optflags -fno-signed-zeros
6898
6899 if enabled lto; then
6900     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6901     check_cflags  -flto
6902     check_ldflags -flto $cpuflags
6903     disable inline_asm_direct_symbol_refs
6904 fi
6905
6906 enabled ftrapv && check_cflags -ftrapv
6907
6908 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6909 int x;
6910 EOF
6911
6912
6913 if enabled icc; then
6914     # Just warnings, no remarks
6915     check_cflags -w1
6916     # -wd: Disable following warnings
6917     # 144, 167, 556: -Wno-pointer-sign
6918     # 188: enumerated type mixed with another type
6919     # 1292: attribute "foo" ignored
6920     # 1419: external declaration in primary source file
6921     # 10006: ignoring unknown option -fno-signed-zeros
6922     # 10148: ignoring unknown option -Wno-parentheses
6923     # 10156: ignoring option '-W'; no argument required
6924     # 13200: No EMMS instruction before call to function
6925     # 13203: No EMMS instruction before return from function
6926     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6927     # 11030: Warning unknown option --as-needed
6928     # 10156: ignoring option '-export'; no argument required
6929     check_ldflags -wd10156,11030
6930     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6931     enable ebp_available
6932     # The test above does not test linking
6933     enabled lto && disable symver_asm_label
6934     if enabled x86_32; then
6935         icc_version=$($cc -dumpversion)
6936         test ${icc_version%%.*} -ge 11 &&
6937             check_cflags -falign-stack=maintain-16-byte ||
6938             disable aligned_stack
6939     fi
6940 elif enabled gcc; then
6941     check_optflags -fno-tree-vectorize
6942     check_cflags -Werror=format-security
6943     check_cflags -Werror=implicit-function-declaration
6944     check_cflags -Werror=missing-prototypes
6945     check_cflags -Werror=return-type
6946     check_cflags -Werror=vla
6947     check_cflags -Wformat
6948     check_cflags -fdiagnostics-color=auto
6949     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6950     if enabled x86_32; then
6951         case $target_os in
6952         *bsd*)
6953             # BSDs don't guarantee a 16 byte aligned stack, but we can
6954             # request GCC to try to maintain 16 byte alignment throughout
6955             # function calls. Library entry points that might call assembly
6956             # functions align the stack. (The parameter means 2^4 bytes.)
6957             check_cflags -mpreferred-stack-boundary=4
6958             ;;
6959         esac
6960     fi
6961 elif enabled llvm_gcc; then
6962     check_cflags -mllvm -stack-alignment=16
6963 elif enabled clang; then
6964     if enabled x86_32; then
6965         # Clang doesn't support maintaining alignment without assuming the
6966         # same alignment in every function. If 16 byte alignment would be
6967         # enabled, one would also have to either add attribute_align_arg on
6968         # every single entry point into the libraries or enable -mstackrealign
6969         # (doing stack realignment in every single function).
6970         case $target_os in
6971         mingw32|win32|*bsd*)
6972             disable aligned_stack
6973             ;;
6974         *)
6975             check_cflags -mllvm -stack-alignment=16
6976             check_cflags -mstack-alignment=16
6977             ;;
6978         esac
6979     else
6980         check_cflags -mllvm -stack-alignment=16
6981         check_cflags -mstack-alignment=16
6982     fi
6983     check_cflags -Qunused-arguments
6984     check_cflags -Werror=implicit-function-declaration
6985     check_cflags -Werror=missing-prototypes
6986     check_cflags -Werror=return-type
6987 elif enabled cparser; then
6988     add_cflags -Wno-missing-variable-declarations
6989     add_cflags -Wno-empty-statement
6990 elif enabled armcc; then
6991     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6992     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6993     # 2523: use of inline assembly is deprecated
6994     add_cflags -W${armcc_opt},--diag_suppress=2523
6995     add_cflags -W${armcc_opt},--diag_suppress=1207
6996     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6997     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6998     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6999     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7000 elif enabled pathscale; then
7001     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7002     disable inline_asm
7003 elif enabled_any msvc icl; then
7004     enabled x86_32 && disable aligned_stack
7005     enabled_all x86_32 debug && add_cflags -Oy-
7006     enabled debug && add_ldflags -debug
7007     enable pragma_deprecated
7008     if enabled icl; then
7009         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7010         # (correctly) on icl 13.x.
7011         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7012             add_cflags -Qansi-alias
7013         # Some inline asm is not compilable in debug
7014         if enabled debug; then
7015             disable ebp_available
7016             disable ebx_available
7017         fi
7018     fi
7019     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7020     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7021     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7022     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7023     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7024     # MSVC 2013 and newer can handle it fine.
7025     # If this declspec fails, force including stdlib.h before the restrict redefinition
7026     # happens in config.h.
7027     if [ $restrict_keyword != restrict ]; then
7028         test_cc <<EOF || add_cflags -FIstdlib.h
7029 __declspec($restrict_keyword) void *foo(int);
7030 EOF
7031     fi
7032     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7033     # Issue has been fixed in MSVC v19.00.24218.
7034     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7035         check_cflags -d2SSAOptimizer-
7036     # enable utf-8 source processing on VS2015 U2 and newer
7037     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7038         add_cflags -utf-8
7039 fi
7040
7041 for pfx in "" host_; do
7042     varname=${pfx%_}cc_type
7043     eval "type=\$$varname"
7044     if [ "$type" = "msvc" ]; then
7045         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7046 static inline int foo(int a) { return a; }
7047 EOF
7048     fi
7049 done
7050
7051 case $as_type in
7052     clang)
7053         add_asflags -Qunused-arguments
7054     ;;
7055 esac
7056
7057 case $ld_type in
7058     clang)
7059         check_ldflags -Qunused-arguments
7060     ;;
7061 esac
7062
7063 enable frame_thread_encoder
7064
7065 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7066
7067 check_deps $CONFIG_LIST       \
7068            $CONFIG_EXTRA      \
7069            $HAVE_LIST         \
7070            $ALL_COMPONENTS    \
7071
7072 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"
7073 enabled avresample && warn "Building with deprecated library libavresample"
7074
7075 case $target_os in
7076 haiku)
7077     disable memalign
7078     disable posix_memalign
7079     ;;
7080 *-dos|freedos|opendos)
7081     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7082         disable memalign
7083     fi
7084     ;;
7085 esac
7086
7087 flatten_extralibs(){
7088     nested_entries=
7089     list_name=$1
7090     eval list=\$${1}
7091     for entry in $list; do
7092         entry_copy=$entry
7093         resolve entry_copy
7094         flat_entries=
7095         for e in $entry_copy; do
7096             case $e in
7097                 *_extralibs) nested_entries="$nested_entries$e ";;
7098                           *) flat_entries="$flat_entries$e ";;
7099             esac
7100         done
7101         eval $entry="\$flat_entries"
7102     done
7103     append $list_name "$nested_entries"
7104
7105     resolve nested_entries
7106     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7107         flatten_extralibs $list_name
7108     fi
7109 }
7110
7111 flatten_extralibs_wrapper(){
7112     list_name=$1
7113     flatten_extralibs $list_name
7114     unique $list_name
7115     resolve $list_name
7116     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7117     eval printf \''%s'\' \""\$$list_name"\"
7118 }
7119
7120 for linkunit in $LIBRARY_LIST; do
7121     unset current_extralibs
7122     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7123     for comp in ${components}; do
7124         enabled $comp || continue
7125         comp_extralibs="${comp}_extralibs"
7126         append current_extralibs $comp_extralibs
7127     done
7128     eval prepend ${linkunit}_extralibs $current_extralibs
7129 done
7130
7131 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7132     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7133 done
7134
7135 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7136
7137 for thread in $THREADS_LIST; do
7138     if enabled $thread; then
7139         test -n "$thread_type" &&
7140             die "ERROR: Only one thread type must be selected." ||
7141             thread_type="$thread"
7142     fi
7143 done
7144
7145 if disabled stdatomic; then
7146     if enabled atomics_gcc; then
7147         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7148     elif enabled atomics_win32; then
7149         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7150     elif enabled atomics_suncc; then
7151         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7152     elif enabled pthreads; then
7153         add_compat atomics/pthread/stdatomic.o
7154         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7155     else
7156         enabled threads && die "Threading is enabled, but no atomics are available"
7157         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7158     fi
7159 fi
7160
7161 # Check if requested libraries were found.
7162 for lib in $AUTODETECT_LIBS; do
7163     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7164 done
7165
7166 enabled zlib && add_cppflags -DZLIB_CONST
7167
7168 # conditional library dependencies, in any order
7169 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7170 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7171 enabled afir_filter         && prepend avfilter_deps "avcodec"
7172 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7173 enabled aresample_filter    && prepend avfilter_deps "swresample"
7174 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7175 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7176 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7177 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7178 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7179 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7180 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7181 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7182 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7183 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7184 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7185 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7186 enabled pan_filter          && prepend avfilter_deps "swresample"
7187 enabled pp_filter           && prepend avfilter_deps "postproc"
7188 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7189 enabled resample_filter && prepend avfilter_deps "avresample"
7190 enabled sab_filter          && prepend avfilter_deps "swscale"
7191 enabled scale_filter    && prepend avfilter_deps "swscale"
7192 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7193 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7194 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7195 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7196 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7197 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7198 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7199 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7200 enabled spp_filter          && prepend avfilter_deps "avcodec"
7201 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7202 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7203 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7204 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7205
7206 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7207
7208 #FIXME
7209 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7210     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7211
7212 enabled opus_decoder    && prepend avcodec_deps "swresample"
7213
7214 # reorder the items at var $1 to align with the items order at var $2 .
7215 # die if an item at $1 is not at $2 .
7216 reorder_by(){
7217     eval rb_in=\$$1
7218     eval rb_ordered=\$$2
7219
7220     for rb in $rb_in; do
7221         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7222     done
7223
7224     rb_out=
7225     for rb in $rb_ordered; do
7226         is_in $rb $rb_in && rb_out="$rb_out$rb "
7227     done
7228     eval $1=\$rb_out
7229 }
7230
7231 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7232 # within a set of N items, N expansions are enough to expose a cycle.
7233 expand_deps(){
7234     unique ${1}_deps  # required for the early break test.
7235     for dummy in $LIBRARY_LIST; do  # N iteratios
7236         eval deps=\$${1}_deps
7237         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7238         unique ${1}_deps
7239         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7240     done
7241
7242     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7243     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7244 }
7245
7246 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7247 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7248
7249 map 'expand_deps $v' $LIBRARY_LIST
7250
7251 if test "$quiet" != "yes"; then
7252
7253 echo "install prefix            $prefix"
7254 echo "source path               $source_path"
7255 echo "C compiler                $cc"
7256 echo "C library                 $libc_type"
7257 if test "$host_cc" != "$cc"; then
7258     echo "host C compiler           $host_cc"
7259     echo "host C library            $host_libc_type"
7260 fi
7261 echo "ARCH                      $arch ($cpu)"
7262 if test "$build_suffix" != ""; then
7263     echo "build suffix              $build_suffix"
7264 fi
7265 if test "$progs_suffix" != ""; then
7266     echo "progs suffix              $progs_suffix"
7267 fi
7268 if test "$extra_version" != ""; then
7269     echo "version string suffix     $extra_version"
7270 fi
7271 echo "big-endian                ${bigendian-no}"
7272 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7273 if enabled x86; then
7274     echo "standalone assembly       ${x86asm-no}"
7275     echo "x86 assembler             ${x86asmexe}"
7276     echo "MMX enabled               ${mmx-no}"
7277     echo "MMXEXT enabled            ${mmxext-no}"
7278     echo "3DNow! enabled            ${amd3dnow-no}"
7279     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7280     echo "SSE enabled               ${sse-no}"
7281     echo "SSSE3 enabled             ${ssse3-no}"
7282     echo "AESNI enabled             ${aesni-no}"
7283     echo "AVX enabled               ${avx-no}"
7284     echo "AVX2 enabled              ${avx2-no}"
7285     echo "AVX-512 enabled           ${avx512-no}"
7286     echo "XOP enabled               ${xop-no}"
7287     echo "FMA3 enabled              ${fma3-no}"
7288     echo "FMA4 enabled              ${fma4-no}"
7289     echo "i686 features enabled     ${i686-no}"
7290     echo "CMOV is fast              ${fast_cmov-no}"
7291     echo "EBX available             ${ebx_available-no}"
7292     echo "EBP available             ${ebp_available-no}"
7293 fi
7294 if enabled aarch64; then
7295     echo "NEON enabled              ${neon-no}"
7296     echo "VFP enabled               ${vfp-no}"
7297 fi
7298 if enabled arm; then
7299     echo "ARMv5TE enabled           ${armv5te-no}"
7300     echo "ARMv6 enabled             ${armv6-no}"
7301     echo "ARMv6T2 enabled           ${armv6t2-no}"
7302     echo "VFP enabled               ${vfp-no}"
7303     echo "NEON enabled              ${neon-no}"
7304     echo "THUMB enabled             ${thumb-no}"
7305 fi
7306 if enabled mips; then
7307     echo "MIPS FPU enabled          ${mipsfpu-no}"
7308     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7309     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7310     echo "MIPS MSA enabled          ${msa-no}"
7311     echo "MIPS MSA2 enabled         ${msa2-no}"
7312     echo "LOONGSON MMI enabled      ${mmi-no}"
7313 fi
7314 if enabled ppc; then
7315     echo "AltiVec enabled           ${altivec-no}"
7316     echo "VSX enabled               ${vsx-no}"
7317     echo "POWER8 enabled            ${power8-no}"
7318     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7319     echo "dcbzl available           ${dcbzl-no}"
7320 fi
7321 echo "debug symbols             ${debug-no}"
7322 echo "strip symbols             ${stripping-no}"
7323 echo "optimize for size         ${small-no}"
7324 echo "optimizations             ${optimizations-no}"
7325 echo "static                    ${static-no}"
7326 echo "shared                    ${shared-no}"
7327 echo "postprocessing support    ${postproc-no}"
7328 echo "network support           ${network-no}"
7329 echo "threading support         ${thread_type-no}"
7330 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7331 echo "texi2html enabled         ${texi2html-no}"
7332 echo "perl enabled              ${perl-no}"
7333 echo "pod2man enabled           ${pod2man-no}"
7334 echo "makeinfo enabled          ${makeinfo-no}"
7335 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7336 test -n "$random_seed" &&
7337     echo "random seed               ${random_seed}"
7338 echo
7339
7340 echo "External libraries:"
7341 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7342 echo
7343
7344 echo "External libraries providing hardware acceleration:"
7345 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7346 echo
7347
7348 echo "Libraries:"
7349 print_enabled '' $LIBRARY_LIST | print_in_columns
7350 echo
7351
7352 echo "Programs:"
7353 print_enabled '' $PROGRAM_LIST | print_in_columns
7354 echo
7355
7356 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7357     echo "Enabled ${type}s:"
7358     eval list=\$$(toupper $type)_LIST
7359     print_enabled '_*' $list | print_in_columns
7360     echo
7361 done
7362
7363 if test -n "$ignore_tests"; then
7364     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7365     echo "Ignored FATE tests:"
7366     echo $ignore_tests | print_in_columns
7367     echo
7368 fi
7369
7370 echo "License: $license"
7371
7372 fi # test "$quiet" != "yes"
7373
7374 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7375     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7376         if disabled $cfg; then
7377             varname=${cfg}_disable_reason
7378             eval "warn \"Disabled $cfg because \$$varname\""
7379         fi
7380     done
7381 fi
7382
7383 if test -n "$WARNINGS"; then
7384     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7385     enabled fatal_warnings && exit 1
7386 fi
7387
7388 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7389
7390 esc(){
7391     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7392 }
7393
7394 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7395
7396 enabled stripping || strip="echo skipping strip"
7397 enabled stripping || striptype=""
7398
7399 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7400
7401 cat > ffbuild/config.mak <<EOF
7402 # Automatically generated by configure - do not modify!
7403 ifndef FFMPEG_CONFIG_MAK
7404 FFMPEG_CONFIG_MAK=1
7405 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7406 prefix=$prefix
7407 LIBDIR=\$(DESTDIR)$libdir
7408 SHLIBDIR=\$(DESTDIR)$shlibdir
7409 INCDIR=\$(DESTDIR)$incdir
7410 BINDIR=\$(DESTDIR)$bindir
7411 DATADIR=\$(DESTDIR)$datadir
7412 DOCDIR=\$(DESTDIR)$docdir
7413 MANDIR=\$(DESTDIR)$mandir
7414 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7415 INSTALL_NAME_DIR=$install_name_dir
7416 SRC_PATH=$source_path
7417 SRC_LINK=$source_link
7418 ifndef MAIN_MAKEFILE
7419 SRC_PATH:=\$(SRC_PATH:.%=..%)
7420 endif
7421 CC_IDENT=$cc_ident
7422 ARCH=$arch
7423 INTRINSICS=$intrinsics
7424 EXTERN_PREFIX=$extern_prefix
7425 CC=$cc
7426 CXX=$cxx
7427 AS=$as
7428 OBJCC=$objcc
7429 LD=$ld
7430 DEPCC=$dep_cc
7431 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7432 DEPAS=$as
7433 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7434 X86ASM=$x86asmexe
7435 DEPX86ASM=$x86asmexe
7436 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7437 AR=$ar
7438 ARFLAGS=$arflags
7439 AR_O=$ar_o
7440 AR_CMD=$ar
7441 NM_CMD=$nm
7442 RANLIB=$ranlib
7443 STRIP=$strip
7444 STRIPTYPE=$striptype
7445 NVCC=$nvcc
7446 CP=cp -p
7447 LN_S=$ln_s
7448 CPPFLAGS=$CPPFLAGS
7449 CFLAGS=$CFLAGS
7450 CXXFLAGS=$CXXFLAGS
7451 OBJCFLAGS=$OBJCFLAGS
7452 ASFLAGS=$ASFLAGS
7453 NVCCFLAGS=$nvccflags
7454 AS_C=$AS_C
7455 AS_O=$AS_O
7456 OBJCC_C=$OBJCC_C
7457 OBJCC_E=$OBJCC_E
7458 OBJCC_O=$OBJCC_O
7459 CC_C=$CC_C
7460 CC_E=$CC_E
7461 CC_O=$CC_O
7462 CXX_C=$CXX_C
7463 CXX_O=$CXX_O
7464 NVCC_C=$NVCC_C
7465 NVCC_O=$NVCC_O
7466 LD_O=$LD_O
7467 X86ASM_O=$X86ASM_O
7468 LD_LIB=$LD_LIB
7469 LD_PATH=$LD_PATH
7470 DLLTOOL=$dlltool
7471 WINDRES=$windres
7472 DEPWINDRES=$dep_cc
7473 DOXYGEN=$doxygen
7474 LDFLAGS=$LDFLAGS
7475 LDEXEFLAGS=$LDEXEFLAGS
7476 LDSOFLAGS=$LDSOFLAGS
7477 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7478 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7479 X86ASMFLAGS=$X86ASMFLAGS
7480 MSAFLAGS=$MSAFLAGS
7481 MMIFLAGS=$MMIFLAGS
7482 BUILDSUF=$build_suffix
7483 PROGSSUF=$progs_suffix
7484 FULLNAME=$FULLNAME
7485 LIBPREF=$LIBPREF
7486 LIBSUF=$LIBSUF
7487 LIBNAME=$LIBNAME
7488 SLIBPREF=$SLIBPREF
7489 SLIBSUF=$SLIBSUF
7490 EXESUF=$EXESUF
7491 EXTRA_VERSION=$extra_version
7492 CCDEP=$CCDEP
7493 CXXDEP=$CXXDEP
7494 CCDEP_FLAGS=$CCDEP_FLAGS
7495 ASDEP=$ASDEP
7496 ASDEP_FLAGS=$ASDEP_FLAGS
7497 X86ASMDEP=$X86ASMDEP
7498 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7499 CC_DEPFLAGS=$CC_DEPFLAGS
7500 AS_DEPFLAGS=$AS_DEPFLAGS
7501 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7502 HOSTCC=$host_cc
7503 HOSTLD=$host_ld
7504 HOSTCFLAGS=$host_cflags
7505 HOSTCPPFLAGS=$host_cppflags
7506 HOSTEXESUF=$HOSTEXESUF
7507 HOSTLDFLAGS=$host_ldflags
7508 HOSTEXTRALIBS=$host_extralibs
7509 DEPHOSTCC=$host_cc
7510 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7511 HOSTCCDEP=$HOSTCCDEP
7512 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7513 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7514 HOSTCC_C=$HOSTCC_C
7515 HOSTCC_O=$HOSTCC_O
7516 HOSTLD_O=$HOSTLD_O
7517 TARGET_EXEC=$target_exec $target_exec_args
7518 TARGET_PATH=$target_path
7519 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7520 CFLAGS-ffplay=${sdl2_cflags}
7521 CFLAGS_HEADERS=$CFLAGS_HEADERS
7522 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7523 EXTRALIBS=$extralibs
7524 COMPAT_OBJS=$compat_objs
7525 INSTALL=$install
7526 LIBTARGET=${LIBTARGET}
7527 SLIBNAME=${SLIBNAME}
7528 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7529 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7530 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7531 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7532 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7533 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7534 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7535 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7536 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7537 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7538 NOREDZONE_FLAGS=$noredzone_flags
7539 LIBFUZZER_PATH=$libfuzzer_path
7540 IGNORE_TESTS=$ignore_tests
7541 EOF
7542
7543 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7544
7545 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7546     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7547 done
7548
7549 cat > $TMPH <<EOF
7550 /* Automatically generated by configure - do not modify! */
7551 #ifndef FFMPEG_CONFIG_H
7552 #define FFMPEG_CONFIG_H
7553 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7554 #define FFMPEG_LICENSE "$(c_escape $license)"
7555 #define CONFIG_THIS_YEAR 2020
7556 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7557 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7558 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7559 #define av_restrict $restrict_keyword
7560 #define EXTERN_PREFIX "${extern_prefix}"
7561 #define EXTERN_ASM ${extern_prefix}
7562 #define BUILDSUF "$build_suffix"
7563 #define SLIBSUF "$SLIBSUF"
7564 #define HAVE_MMX2 HAVE_MMXEXT
7565 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7566 EOF
7567
7568 test -n "$assert_level" &&
7569     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7570
7571 test -n "$malloc_prefix" &&
7572     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7573
7574 if enabled x86asm; then
7575     append config_files $TMPASM
7576     cat > $TMPASM <<EOF
7577 ; Automatically generated by configure - do not modify!
7578 EOF
7579 fi
7580
7581 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7582
7583
7584 mkdir -p doc
7585 mkdir -p tests
7586 mkdir -p tests/api
7587 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7588
7589 print_config ARCH_   "$config_files" $ARCH_LIST
7590 print_config HAVE_   "$config_files" $HAVE_LIST
7591 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7592                                      $CONFIG_EXTRA      \
7593                                      $ALL_COMPONENTS    \
7594
7595 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7596 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7597
7598 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7599 cp_if_changed $TMPH config.h
7600 touch ffbuild/.config
7601
7602 enabled x86asm && cp_if_changed $TMPASM config.asm
7603
7604 cat > $TMPH <<EOF
7605 /* Generated by ffmpeg configure */
7606 #ifndef AVUTIL_AVCONFIG_H
7607 #define AVUTIL_AVCONFIG_H
7608 EOF
7609
7610 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7611
7612 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7613
7614 cp_if_changed $TMPH libavutil/avconfig.h
7615
7616 # full_filter_name_foo=vf_foo
7617 # full_filter_name_bar=asrc_bar
7618 # ...
7619 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7620
7621 # generate the lists of enabled components
7622 print_enabled_components(){
7623     file=$1
7624     struct_name=$2
7625     name=$3
7626     shift 3
7627     echo "static const $struct_name * const $name[] = {" > $TMPH
7628     for c in $*; do
7629         if enabled $c; then
7630             case $name in
7631                 filter_list)
7632                     eval c=\$full_filter_name_${c%_filter}
7633                 ;;
7634                 indev_list)
7635                     c=${c%_indev}_demuxer
7636                 ;;
7637                 outdev_list)
7638                     c=${c%_outdev}_muxer
7639                 ;;
7640             esac
7641             printf "    &ff_%s,\n" $c >> $TMPH
7642         fi
7643     done
7644     if [ "$name" = "filter_list" ]; then
7645         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7646             printf "    &ff_%s,\n" $c >> $TMPH
7647         done
7648     fi
7649     echo "    NULL };" >> $TMPH
7650     cp_if_changed $TMPH $file
7651 }
7652
7653 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7654 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7655 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7656 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7657 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7658 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7659 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7660 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7661 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7662
7663 # Settings for pkg-config files
7664
7665 cat > $TMPH <<EOF
7666 # Automatically generated by configure - do not modify!
7667 shared=$shared
7668 build_suffix=$build_suffix
7669 prefix=$prefix
7670 libdir=$libdir
7671 incdir=$incdir
7672 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7673 source_path=${source_path}
7674 LIBPREF=${LIBPREF}
7675 LIBSUF=${LIBSUF}
7676 extralibs_avutil="$avutil_extralibs"
7677 extralibs_avcodec="$avcodec_extralibs"
7678 extralibs_avformat="$avformat_extralibs"
7679 extralibs_avdevice="$avdevice_extralibs"
7680 extralibs_avfilter="$avfilter_extralibs"
7681 extralibs_avresample="$avresample_extralibs"
7682 extralibs_postproc="$postproc_extralibs"
7683 extralibs_swscale="$swscale_extralibs"
7684 extralibs_swresample="$swresample_extralibs"
7685 EOF
7686
7687 for lib in $LIBRARY_LIST; do
7688     lib_deps="$(eval echo \$${lib}_deps)"
7689     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7690 done
7691
7692 cp_if_changed $TMPH ffbuild/config.sh