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     atsc_a53
2348     audio_frame_queue
2349     audiodsp
2350     blockdsp
2351     bswapdsp
2352     cabac
2353     cbs
2354     cbs_av1
2355     cbs_h264
2356     cbs_h265
2357     cbs_jpeg
2358     cbs_mpeg2
2359     cbs_vp9
2360     dirac_parse
2361     dnn
2362     dvprofile
2363     exif
2364     faandct
2365     faanidct
2366     fdctdsp
2367     flacdsp
2368     fmtconvert
2369     frame_thread_encoder
2370     g722dsp
2371     golomb
2372     gplv3
2373     h263dsp
2374     h264chroma
2375     h264dsp
2376     h264parse
2377     h264pred
2378     h264qpel
2379     hevcparse
2380     hpeldsp
2381     huffman
2382     huffyuvdsp
2383     huffyuvencdsp
2384     idctdsp
2385     iirfilter
2386     mdct15
2387     intrax8
2388     iso_media
2389     ividsp
2390     jpegtables
2391     lgplv3
2392     libx262
2393     llauddsp
2394     llviddsp
2395     llvidencdsp
2396     lpc
2397     lzf
2398     me_cmp
2399     mpeg_er
2400     mpegaudio
2401     mpegaudiodsp
2402     mpegaudioheader
2403     mpegvideo
2404     mpegvideoenc
2405     mss34dsp
2406     pixblockdsp
2407     qpeldsp
2408     qsv
2409     qsvdec
2410     qsvenc
2411     qsvvpp
2412     rangecoder
2413     riffdec
2414     riffenc
2415     rtpdec
2416     rtpenc_chain
2417     rv34dsp
2418     scene_sad
2419     sinewin
2420     snappy
2421     srtp
2422     startcode
2423     texturedsp
2424     texturedspenc
2425     tpeldsp
2426     vaapi_1
2427     vaapi_encode
2428     vc1dsp
2429     videodsp
2430     vp3dsp
2431     vp56dsp
2432     vp8dsp
2433     wma_freqs
2434     wmv2dsp
2435 "
2436
2437 CMDLINE_SELECT="
2438     $ARCH_EXT_LIST
2439     $CONFIG_LIST
2440     $HAVE_LIST_CMDLINE
2441     $THREADS_LIST
2442     asm
2443     cross_compile
2444     debug
2445     extra_warnings
2446     logging
2447     lto
2448     optimizations
2449     rpath
2450     stripping
2451 "
2452
2453 PATHS_LIST="
2454     bindir
2455     datadir
2456     docdir
2457     incdir
2458     libdir
2459     mandir
2460     pkgconfigdir
2461     prefix
2462     shlibdir
2463     install_name_dir
2464 "
2465
2466 CMDLINE_SET="
2467     $PATHS_LIST
2468     ar
2469     arch
2470     as
2471     assert_level
2472     build_suffix
2473     cc
2474     objcc
2475     cpu
2476     cross_prefix
2477     custom_allocator
2478     cxx
2479     dep_cc
2480     doxygen
2481     env
2482     extra_version
2483     gas
2484     host_cc
2485     host_cflags
2486     host_extralibs
2487     host_ld
2488     host_ldflags
2489     host_os
2490     ignore_tests
2491     install
2492     ld
2493     ln_s
2494     logfile
2495     malloc_prefix
2496     nm
2497     optflags
2498     nvcc
2499     nvccflags
2500     pkg_config
2501     pkg_config_flags
2502     progs_suffix
2503     random_seed
2504     ranlib
2505     samples
2506     strip
2507     sws_max_filter_size
2508     sysinclude
2509     sysroot
2510     target_exec
2511     target_os
2512     target_path
2513     target_samples
2514     tempprefix
2515     toolchain
2516     valgrind
2517     windres
2518     x86asmexe
2519 "
2520
2521 CMDLINE_APPEND="
2522     extra_cflags
2523     extra_cxxflags
2524     extra_objcflags
2525     host_cppflags
2526 "
2527
2528 # code dependency declarations
2529
2530 # architecture extensions
2531
2532 armv5te_deps="arm"
2533 armv6_deps="arm"
2534 armv6t2_deps="arm"
2535 armv8_deps="aarch64"
2536 neon_deps_any="aarch64 arm"
2537 intrinsics_neon_deps="neon"
2538 vfp_deps_any="aarch64 arm"
2539 vfpv3_deps="vfp"
2540 setend_deps="arm"
2541
2542 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2543
2544 altivec_deps="ppc"
2545 dcbzl_deps="ppc"
2546 ldbrx_deps="ppc"
2547 ppc4xx_deps="ppc"
2548 vsx_deps="altivec"
2549 power8_deps="vsx"
2550
2551 loongson2_deps="mips"
2552 loongson3_deps="mips"
2553 mips32r2_deps="mips"
2554 mips32r5_deps="mips"
2555 mips32r6_deps="mips"
2556 mips64r2_deps="mips"
2557 mips64r6_deps="mips"
2558 mipsfpu_deps="mips"
2559 mipsdsp_deps="mips"
2560 mipsdspr2_deps="mips"
2561 mmi_deps_any="loongson2 loongson3"
2562 msa_deps="mipsfpu"
2563 msa2_deps="msa"
2564
2565 cpunop_deps="i686"
2566 x86_64_select="i686"
2567 x86_64_suggest="fast_cmov"
2568
2569 amd3dnow_deps="mmx"
2570 amd3dnowext_deps="amd3dnow"
2571 i686_deps="x86"
2572 mmx_deps="x86"
2573 mmxext_deps="mmx"
2574 sse_deps="mmxext"
2575 sse2_deps="sse"
2576 sse3_deps="sse2"
2577 ssse3_deps="sse3"
2578 sse4_deps="ssse3"
2579 sse42_deps="sse4"
2580 aesni_deps="sse42"
2581 avx_deps="sse42"
2582 xop_deps="avx"
2583 fma3_deps="avx"
2584 fma4_deps="avx"
2585 avx2_deps="avx"
2586 avx512_deps="avx2"
2587
2588 mmx_external_deps="x86asm"
2589 mmx_inline_deps="inline_asm x86"
2590 mmx_suggest="mmx_external mmx_inline"
2591
2592 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2593     eval dep=\$${ext}_deps
2594     eval ${ext}_external_deps='"${dep}_external"'
2595     eval ${ext}_inline_deps='"${dep}_inline"'
2596     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2597 done
2598
2599 aligned_stack_if_any="aarch64 ppc x86"
2600 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2601 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2602 fast_unaligned_if_any="aarch64 ppc x86"
2603 simd_align_16_if_any="altivec neon sse"
2604 simd_align_32_if_any="avx"
2605 simd_align_64_if_any="avx512"
2606
2607 # system capabilities
2608 linux_perf_deps="linux_perf_event_h"
2609 symver_if_any="symver_asm_label symver_gnu_asm"
2610 valgrind_backtrace_conflict="optimizations"
2611 valgrind_backtrace_deps="valgrind_valgrind_h"
2612
2613 # threading support
2614 atomics_gcc_if="sync_val_compare_and_swap"
2615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2616 atomics_win32_if="MemoryBarrier"
2617 atomics_native_if_any="$ATOMICS_LIST"
2618 w32threads_deps="atomics_native"
2619 threads_if_any="$THREADS_LIST"
2620
2621 # subsystems
2622 cbs_av1_select="cbs"
2623 cbs_h264_select="cbs"
2624 cbs_h265_select="cbs"
2625 cbs_jpeg_select="cbs"
2626 cbs_mpeg2_select="cbs"
2627 cbs_vp9_select="cbs"
2628 dct_select="rdft"
2629 dirac_parse_select="golomb"
2630 dnn_suggest="libtensorflow libopenvino"
2631 error_resilience_select="me_cmp"
2632 faandct_deps="faan"
2633 faandct_select="fdctdsp"
2634 faanidct_deps="faan"
2635 faanidct_select="idctdsp"
2636 h264dsp_select="startcode"
2637 hevcparse_select="golomb"
2638 frame_thread_encoder_deps="encoders threads"
2639 intrax8_select="blockdsp idctdsp"
2640 mdct_select="fft"
2641 mdct15_select="fft"
2642 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2643 mpeg_er_select="error_resilience"
2644 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2645 mpegaudiodsp_select="dct"
2646 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2647 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2648 vc1dsp_select="h264chroma qpeldsp startcode"
2649 rdft_select="fft"
2650
2651 # decoders / encoders
2652 aac_decoder_select="adts_header mdct15 mdct sinewin"
2653 aac_fixed_decoder_select="adts_header mdct sinewin"
2654 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2655 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2656 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2657 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2658 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2659 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 acelp_kelvin_decoder_select="audiodsp"
2661 adpcm_g722_decoder_select="g722dsp"
2662 adpcm_g722_encoder_select="g722dsp"
2663 aic_decoder_select="golomb idctdsp"
2664 alac_encoder_select="lpc"
2665 als_decoder_select="bswapdsp"
2666 amrnb_decoder_select="lsp"
2667 amrwb_decoder_select="lsp"
2668 amv_decoder_select="sp5x_decoder exif"
2669 amv_encoder_select="jpegtables mpegvideoenc"
2670 ape_decoder_select="bswapdsp llauddsp"
2671 apng_decoder_deps="zlib"
2672 apng_encoder_deps="zlib"
2673 apng_encoder_select="llvidencdsp"
2674 aptx_decoder_select="audio_frame_queue"
2675 aptx_encoder_select="audio_frame_queue"
2676 aptx_hd_decoder_select="audio_frame_queue"
2677 aptx_hd_encoder_select="audio_frame_queue"
2678 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2679 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2680 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2681 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2682 atrac1_decoder_select="mdct sinewin"
2683 atrac3_decoder_select="mdct"
2684 atrac3al_decoder_select="mdct"
2685 atrac3p_decoder_select="mdct sinewin"
2686 atrac3pal_decoder_select="mdct sinewin"
2687 atrac9_decoder_select="mdct"
2688 avrn_decoder_select="exif jpegtables"
2689 bink_decoder_select="blockdsp hpeldsp"
2690 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2691 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2692 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2693 clearvideo_decoder_select="idctdsp"
2694 cllc_decoder_select="bswapdsp"
2695 comfortnoise_encoder_select="lpc"
2696 cook_decoder_select="audiodsp mdct sinewin"
2697 cscd_decoder_select="lzo"
2698 cscd_decoder_suggest="zlib"
2699 dca_decoder_select="mdct"
2700 dca_encoder_select="mdct"
2701 dds_decoder_select="texturedsp"
2702 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2703 dnxhd_decoder_select="blockdsp idctdsp"
2704 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2705 dolby_e_decoder_select="mdct"
2706 dvvideo_decoder_select="dvprofile idctdsp"
2707 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2708 dxa_decoder_deps="zlib"
2709 dxv_decoder_select="lzf texturedsp"
2710 eac3_decoder_select="ac3_decoder"
2711 eac3_encoder_select="ac3_encoder"
2712 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2713 eatgq_decoder_select="aandcttables"
2714 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2715 exr_decoder_deps="zlib"
2716 ffv1_decoder_select="rangecoder"
2717 ffv1_encoder_select="rangecoder"
2718 ffvhuff_decoder_select="huffyuv_decoder"
2719 ffvhuff_encoder_select="huffyuv_encoder"
2720 fic_decoder_select="golomb"
2721 flac_decoder_select="flacdsp"
2722 flac_encoder_select="bswapdsp flacdsp lpc"
2723 flashsv2_decoder_deps="zlib"
2724 flashsv2_encoder_deps="zlib"
2725 flashsv_decoder_deps="zlib"
2726 flashsv_encoder_deps="zlib"
2727 flv_decoder_select="h263_decoder"
2728 flv_encoder_select="h263_encoder"
2729 fourxm_decoder_select="blockdsp bswapdsp"
2730 fraps_decoder_select="bswapdsp huffman"
2731 g2m_decoder_deps="zlib"
2732 g2m_decoder_select="blockdsp idctdsp jpegtables"
2733 g729_decoder_select="audiodsp"
2734 h261_decoder_select="mpegvideo"
2735 h261_encoder_select="mpegvideoenc"
2736 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2737 h263_encoder_select="h263dsp mpegvideoenc"
2738 h263i_decoder_select="h263_decoder"
2739 h263p_decoder_select="h263_decoder"
2740 h263p_encoder_select="h263_encoder"
2741 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2742 h264_decoder_suggest="error_resilience"
2743 hap_decoder_select="snappy texturedsp"
2744 hap_encoder_deps="libsnappy"
2745 hap_encoder_select="texturedspenc"
2746 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2747 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2748 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2749 hymt_decoder_select="huffyuv_decoder"
2750 iac_decoder_select="imc_decoder"
2751 imc_decoder_select="bswapdsp fft mdct sinewin"
2752 imm4_decoder_select="bswapdsp"
2753 imm5_decoder_select="h264_decoder hevc_decoder"
2754 indeo3_decoder_select="hpeldsp"
2755 indeo4_decoder_select="ividsp"
2756 indeo5_decoder_select="ividsp"
2757 interplay_video_decoder_select="hpeldsp"
2758 jpegls_decoder_select="mjpeg_decoder"
2759 jv_decoder_select="blockdsp"
2760 lagarith_decoder_select="llviddsp"
2761 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2762 lscr_decoder_deps="zlib"
2763 magicyuv_decoder_select="llviddsp"
2764 magicyuv_encoder_select="llvidencdsp"
2765 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2766 metasound_decoder_select="lsp mdct sinewin"
2767 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2768 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2769 mjpeg_encoder_select="jpegtables mpegvideoenc"
2770 mjpegb_decoder_select="mjpeg_decoder"
2771 mlp_decoder_select="mlp_parser"
2772 mlp_encoder_select="lpc audio_frame_queue"
2773 motionpixels_decoder_select="bswapdsp"
2774 mp1_decoder_select="mpegaudio"
2775 mp1float_decoder_select="mpegaudio"
2776 mp2_decoder_select="mpegaudio"
2777 mp2float_decoder_select="mpegaudio"
2778 mp3_decoder_select="mpegaudio"
2779 mp3adu_decoder_select="mpegaudio"
2780 mp3adufloat_decoder_select="mpegaudio"
2781 mp3float_decoder_select="mpegaudio"
2782 mp3on4_decoder_select="mpegaudio"
2783 mp3on4float_decoder_select="mpegaudio"
2784 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2785 mpc8_decoder_select="mpegaudiodsp"
2786 mpegvideo_decoder_select="mpegvideo"
2787 mpeg1video_decoder_select="mpegvideo"
2788 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2789 mpeg2video_decoder_select="mpegvideo"
2790 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2791 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2792 mpeg4_encoder_select="h263_encoder"
2793 msa1_decoder_select="mss34dsp"
2794 mscc_decoder_deps="zlib"
2795 msmpeg4v1_decoder_select="h263_decoder"
2796 msmpeg4v2_decoder_select="h263_decoder"
2797 msmpeg4v2_encoder_select="h263_encoder"
2798 msmpeg4v3_decoder_select="h263_decoder"
2799 msmpeg4v3_encoder_select="h263_encoder"
2800 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2801 mts2_decoder_select="mss34dsp"
2802 mv30_decoder_select="aandcttables blockdsp"
2803 mvha_decoder_deps="zlib"
2804 mvha_decoder_select="llviddsp"
2805 mwsc_decoder_deps="zlib"
2806 mxpeg_decoder_select="mjpeg_decoder"
2807 nellymoser_decoder_select="mdct sinewin"
2808 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2809 notchlc_decoder_select="lzf"
2810 nuv_decoder_select="idctdsp lzo"
2811 on2avc_decoder_select="mdct"
2812 opus_decoder_deps="swresample"
2813 opus_decoder_select="mdct15"
2814 opus_encoder_select="audio_frame_queue mdct15"
2815 png_decoder_deps="zlib"
2816 png_encoder_deps="zlib"
2817 png_encoder_select="llvidencdsp"
2818 prores_decoder_select="blockdsp idctdsp"
2819 prores_encoder_select="fdctdsp"
2820 qcelp_decoder_select="lsp"
2821 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2822 ra_144_decoder_select="audiodsp"
2823 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2824 ralf_decoder_select="golomb"
2825 rasc_decoder_deps="zlib"
2826 rawvideo_decoder_select="bswapdsp"
2827 rscc_decoder_deps="zlib"
2828 rtjpeg_decoder_select="me_cmp"
2829 rv10_decoder_select="h263_decoder"
2830 rv10_encoder_select="h263_encoder"
2831 rv20_decoder_select="h263_decoder"
2832 rv20_encoder_select="h263_encoder"
2833 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2834 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2835 screenpresso_decoder_deps="zlib"
2836 shorten_decoder_select="bswapdsp"
2837 sipr_decoder_select="lsp"
2838 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2839 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2840 sonic_decoder_select="golomb rangecoder"
2841 sonic_encoder_select="golomb rangecoder"
2842 sonic_ls_encoder_select="golomb rangecoder"
2843 sp5x_decoder_select="mjpeg_decoder"
2844 speedhq_decoder_select="mpegvideo"
2845 srgc_decoder_deps="zlib"
2846 svq1_decoder_select="hpeldsp"
2847 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2848 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2849 svq3_decoder_suggest="zlib"
2850 tak_decoder_select="audiodsp"
2851 tdsc_decoder_deps="zlib"
2852 tdsc_decoder_select="mjpeg_decoder"
2853 theora_decoder_select="vp3_decoder"
2854 thp_decoder_select="mjpeg_decoder"
2855 tiff_decoder_select="mjpeg_decoder"
2856 tiff_decoder_suggest="zlib lzma"
2857 tiff_encoder_suggest="zlib"
2858 truehd_decoder_select="mlp_parser"
2859 truehd_encoder_select="lpc audio_frame_queue"
2860 truemotion2_decoder_select="bswapdsp"
2861 truespeech_decoder_select="bswapdsp"
2862 tscc_decoder_deps="zlib"
2863 twinvq_decoder_select="mdct lsp sinewin"
2864 txd_decoder_select="texturedsp"
2865 utvideo_decoder_select="bswapdsp llviddsp"
2866 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2867 vble_decoder_select="llviddsp"
2868 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2869 vc1image_decoder_select="vc1_decoder"
2870 vorbis_decoder_select="mdct"
2871 vorbis_encoder_select="audio_frame_queue mdct"
2872 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2873 vp4_decoder_select="vp3_decoder"
2874 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2875 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2876 vp6a_decoder_select="vp6_decoder"
2877 vp6f_decoder_select="vp6_decoder"
2878 vp7_decoder_select="h264pred videodsp vp8dsp"
2879 vp8_decoder_select="h264pred videodsp vp8dsp"
2880 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2881 wcmv_decoder_deps="zlib"
2882 webp_decoder_select="vp8_decoder exif"
2883 wmalossless_decoder_select="llauddsp"
2884 wmapro_decoder_select="mdct sinewin wma_freqs"
2885 wmav1_decoder_select="mdct sinewin wma_freqs"
2886 wmav1_encoder_select="mdct sinewin wma_freqs"
2887 wmav2_decoder_select="mdct sinewin wma_freqs"
2888 wmav2_encoder_select="mdct sinewin wma_freqs"
2889 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2890 wmv1_decoder_select="h263_decoder"
2891 wmv1_encoder_select="h263_encoder"
2892 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2893 wmv2_encoder_select="h263_encoder wmv2dsp"
2894 wmv3_decoder_select="vc1_decoder"
2895 wmv3image_decoder_select="wmv3_decoder"
2896 xma1_decoder_select="wmapro_decoder"
2897 xma2_decoder_select="wmapro_decoder"
2898 ylc_decoder_select="bswapdsp"
2899 zerocodec_decoder_deps="zlib"
2900 zlib_decoder_deps="zlib"
2901 zlib_encoder_deps="zlib"
2902 zmbv_decoder_deps="zlib"
2903 zmbv_encoder_deps="zlib"
2904
2905 # hardware accelerators
2906 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2907 cuda_deps="ffnvcodec"
2908 cuvid_deps="ffnvcodec"
2909 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2910 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2911 ffnvcodec_deps_any="libdl LoadLibrary"
2912 nvdec_deps="ffnvcodec"
2913 vaapi_x11_deps="xlib"
2914 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2915 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2916 xvmc_deps="X11_extensions_XvMClib_h"
2917
2918 h263_vaapi_hwaccel_deps="vaapi"
2919 h263_vaapi_hwaccel_select="h263_decoder"
2920 h263_videotoolbox_hwaccel_deps="videotoolbox"
2921 h263_videotoolbox_hwaccel_select="h263_decoder"
2922 h264_d3d11va_hwaccel_deps="d3d11va"
2923 h264_d3d11va_hwaccel_select="h264_decoder"
2924 h264_d3d11va2_hwaccel_deps="d3d11va"
2925 h264_d3d11va2_hwaccel_select="h264_decoder"
2926 h264_dxva2_hwaccel_deps="dxva2"
2927 h264_dxva2_hwaccel_select="h264_decoder"
2928 h264_nvdec_hwaccel_deps="nvdec"
2929 h264_nvdec_hwaccel_select="h264_decoder"
2930 h264_vaapi_hwaccel_deps="vaapi"
2931 h264_vaapi_hwaccel_select="h264_decoder"
2932 h264_vdpau_hwaccel_deps="vdpau"
2933 h264_vdpau_hwaccel_select="h264_decoder"
2934 h264_videotoolbox_hwaccel_deps="videotoolbox"
2935 h264_videotoolbox_hwaccel_select="h264_decoder"
2936 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2937 hevc_d3d11va_hwaccel_select="hevc_decoder"
2938 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2939 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2940 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2941 hevc_dxva2_hwaccel_select="hevc_decoder"
2942 hevc_nvdec_hwaccel_deps="nvdec"
2943 hevc_nvdec_hwaccel_select="hevc_decoder"
2944 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2945 hevc_vaapi_hwaccel_select="hevc_decoder"
2946 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2947 hevc_vdpau_hwaccel_select="hevc_decoder"
2948 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2949 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2950 mjpeg_nvdec_hwaccel_deps="nvdec"
2951 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2952 mjpeg_vaapi_hwaccel_deps="vaapi"
2953 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2954 mpeg_xvmc_hwaccel_deps="xvmc"
2955 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2956 mpeg1_nvdec_hwaccel_deps="nvdec"
2957 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2958 mpeg1_vdpau_hwaccel_deps="vdpau"
2959 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2960 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2961 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2962 mpeg1_xvmc_hwaccel_deps="xvmc"
2963 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2964 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2965 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2966 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2967 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2968 mpeg2_dxva2_hwaccel_deps="dxva2"
2969 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2970 mpeg2_nvdec_hwaccel_deps="nvdec"
2971 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2972 mpeg2_vaapi_hwaccel_deps="vaapi"
2973 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2974 mpeg2_vdpau_hwaccel_deps="vdpau"
2975 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2976 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2977 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2978 mpeg2_xvmc_hwaccel_deps="xvmc"
2979 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2980 mpeg4_nvdec_hwaccel_deps="nvdec"
2981 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2982 mpeg4_vaapi_hwaccel_deps="vaapi"
2983 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2984 mpeg4_vdpau_hwaccel_deps="vdpau"
2985 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2986 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2987 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2988 vc1_d3d11va_hwaccel_deps="d3d11va"
2989 vc1_d3d11va_hwaccel_select="vc1_decoder"
2990 vc1_d3d11va2_hwaccel_deps="d3d11va"
2991 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2992 vc1_dxva2_hwaccel_deps="dxva2"
2993 vc1_dxva2_hwaccel_select="vc1_decoder"
2994 vc1_nvdec_hwaccel_deps="nvdec"
2995 vc1_nvdec_hwaccel_select="vc1_decoder"
2996 vc1_vaapi_hwaccel_deps="vaapi"
2997 vc1_vaapi_hwaccel_select="vc1_decoder"
2998 vc1_vdpau_hwaccel_deps="vdpau"
2999 vc1_vdpau_hwaccel_select="vc1_decoder"
3000 vp8_nvdec_hwaccel_deps="nvdec"
3001 vp8_nvdec_hwaccel_select="vp8_decoder"
3002 vp8_vaapi_hwaccel_deps="vaapi"
3003 vp8_vaapi_hwaccel_select="vp8_decoder"
3004 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3005 vp9_d3d11va_hwaccel_select="vp9_decoder"
3006 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3007 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3008 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3009 vp9_dxva2_hwaccel_select="vp9_decoder"
3010 vp9_nvdec_hwaccel_deps="nvdec"
3011 vp9_nvdec_hwaccel_select="vp9_decoder"
3012 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3013 vp9_vaapi_hwaccel_select="vp9_decoder"
3014 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3015 vp9_vdpau_hwaccel_select="vp9_decoder"
3016 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3017 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3018 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3019 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3020 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3021 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3022
3023 # hardware-accelerated codecs
3024 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3025 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3026 omx_deps="libdl pthreads"
3027 omx_rpi_select="omx"
3028 qsv_deps="libmfx"
3029 qsvdec_select="qsv"
3030 qsvenc_select="qsv"
3031 qsvvpp_select="qsv"
3032 vaapi_encode_deps="vaapi"
3033 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3034
3035 hwupload_cuda_filter_deps="ffnvcodec"
3036 scale_npp_filter_deps="ffnvcodec libnpp"
3037 scale_cuda_filter_deps="ffnvcodec"
3038 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3039 thumbnail_cuda_filter_deps="ffnvcodec"
3040 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3041 transpose_npp_filter_deps="ffnvcodec libnpp"
3042 overlay_cuda_filter_deps="ffnvcodec"
3043 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3044
3045 amf_deps_any="libdl LoadLibrary"
3046 nvenc_deps="ffnvcodec"
3047 nvenc_deps_any="libdl LoadLibrary"
3048 nvenc_encoder_deps="nvenc"
3049
3050 aac_mf_encoder_deps="mediafoundation"
3051 ac3_mf_encoder_deps="mediafoundation"
3052 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3053 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3054 h264_amf_encoder_deps="amf"
3055 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3056 h264_cuvid_decoder_deps="cuvid"
3057 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3058 h264_mediacodec_decoder_deps="mediacodec"
3059 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3060 h264_mf_encoder_deps="mediafoundation"
3061 h264_mmal_decoder_deps="mmal"
3062 h264_nvenc_encoder_deps="nvenc"
3063 h264_omx_encoder_deps="omx"
3064 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3065 h264_qsv_encoder_select="qsvenc"
3066 h264_rkmpp_decoder_deps="rkmpp"
3067 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3068 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3069 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3070 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3071 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3072 hevc_amf_encoder_deps="amf"
3073 hevc_cuvid_decoder_deps="cuvid"
3074 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3075 hevc_mediacodec_decoder_deps="mediacodec"
3076 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3077 hevc_mf_encoder_deps="mediafoundation"
3078 hevc_nvenc_encoder_deps="nvenc"
3079 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3080 hevc_qsv_encoder_select="hevcparse qsvenc"
3081 hevc_rkmpp_decoder_deps="rkmpp"
3082 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3083 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3084 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3085 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3086 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3087 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3088 mjpeg_cuvid_decoder_deps="cuvid"
3089 mjpeg_qsv_decoder_select="qsvdec"
3090 mjpeg_qsv_encoder_deps="libmfx"
3091 mjpeg_qsv_encoder_select="qsvenc"
3092 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3093 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3094 mp3_mf_encoder_deps="mediafoundation"
3095 mpeg1_cuvid_decoder_deps="cuvid"
3096 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3097 mpeg2_crystalhd_decoder_select="crystalhd"
3098 mpeg2_cuvid_decoder_deps="cuvid"
3099 mpeg2_mmal_decoder_deps="mmal"
3100 mpeg2_mediacodec_decoder_deps="mediacodec"
3101 mpeg2_qsv_decoder_select="qsvdec"
3102 mpeg2_qsv_encoder_select="qsvenc"
3103 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3104 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3105 mpeg4_crystalhd_decoder_select="crystalhd"
3106 mpeg4_cuvid_decoder_deps="cuvid"
3107 mpeg4_mediacodec_decoder_deps="mediacodec"
3108 mpeg4_mmal_decoder_deps="mmal"
3109 mpeg4_omx_encoder_deps="omx"
3110 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3111 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3112 msmpeg4_crystalhd_decoder_select="crystalhd"
3113 nvenc_h264_encoder_select="h264_nvenc_encoder"
3114 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3115 vc1_crystalhd_decoder_select="crystalhd"
3116 vc1_cuvid_decoder_deps="cuvid"
3117 vc1_mmal_decoder_deps="mmal"
3118 vc1_qsv_decoder_select="qsvdec"
3119 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3120 vp8_cuvid_decoder_deps="cuvid"
3121 vp8_mediacodec_decoder_deps="mediacodec"
3122 vp8_qsv_decoder_select="qsvdec"
3123 vp8_rkmpp_decoder_deps="rkmpp"
3124 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3125 vp8_vaapi_encoder_select="vaapi_encode"
3126 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3127 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3128 vp9_cuvid_decoder_deps="cuvid"
3129 vp9_mediacodec_decoder_deps="mediacodec"
3130 vp9_qsv_decoder_select="qsvdec"
3131 vp9_rkmpp_decoder_deps="rkmpp"
3132 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3133 vp9_vaapi_encoder_select="vaapi_encode"
3134 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3135 vp9_qsv_encoder_select="qsvenc"
3136 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3137 wmv3_crystalhd_decoder_select="crystalhd"
3138
3139 # parsers
3140 aac_parser_select="adts_header"
3141 av1_parser_select="cbs_av1"
3142 h264_parser_select="golomb h264dsp h264parse"
3143 hevc_parser_select="hevcparse"
3144 mpegaudio_parser_select="mpegaudioheader"
3145 mpegvideo_parser_select="mpegvideo"
3146 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3147 vc1_parser_select="vc1dsp"
3148
3149 # bitstream_filters
3150 aac_adtstoasc_bsf_select="adts_header"
3151 av1_frame_merge_bsf_select="cbs_av1"
3152 av1_frame_split_bsf_select="cbs_av1"
3153 av1_metadata_bsf_select="cbs_av1"
3154 eac3_core_bsf_select="ac3_parser"
3155 filter_units_bsf_select="cbs"
3156 h264_metadata_bsf_deps="const_nan"
3157 h264_metadata_bsf_select="cbs_h264"
3158 h264_redundant_pps_bsf_select="cbs_h264"
3159 hevc_metadata_bsf_select="cbs_h265"
3160 mjpeg2jpeg_bsf_select="jpegtables"
3161 mpeg2_metadata_bsf_select="cbs_mpeg2"
3162 trace_headers_bsf_select="cbs"
3163 vp9_metadata_bsf_select="cbs_vp9"
3164
3165 # external libraries
3166 aac_at_decoder_deps="audiotoolbox"
3167 aac_at_decoder_select="aac_adtstoasc_bsf"
3168 ac3_at_decoder_deps="audiotoolbox"
3169 ac3_at_decoder_select="ac3_parser"
3170 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3171 alac_at_decoder_deps="audiotoolbox"
3172 amr_nb_at_decoder_deps="audiotoolbox"
3173 avisynth_deps_any="libdl LoadLibrary"
3174 avisynth_demuxer_deps="avisynth"
3175 avisynth_demuxer_select="riffdec"
3176 eac3_at_decoder_deps="audiotoolbox"
3177 eac3_at_decoder_select="ac3_parser"
3178 gsm_ms_at_decoder_deps="audiotoolbox"
3179 ilbc_at_decoder_deps="audiotoolbox"
3180 mp1_at_decoder_deps="audiotoolbox"
3181 mp2_at_decoder_deps="audiotoolbox"
3182 mp3_at_decoder_deps="audiotoolbox"
3183 mp1_at_decoder_select="mpegaudioheader"
3184 mp2_at_decoder_select="mpegaudioheader"
3185 mp3_at_decoder_select="mpegaudioheader"
3186 pcm_alaw_at_decoder_deps="audiotoolbox"
3187 pcm_mulaw_at_decoder_deps="audiotoolbox"
3188 qdmc_decoder_select="fft"
3189 qdmc_at_decoder_deps="audiotoolbox"
3190 qdm2_at_decoder_deps="audiotoolbox"
3191 aac_at_encoder_deps="audiotoolbox"
3192 aac_at_encoder_select="audio_frame_queue"
3193 alac_at_encoder_deps="audiotoolbox"
3194 alac_at_encoder_select="audio_frame_queue"
3195 ilbc_at_encoder_deps="audiotoolbox"
3196 ilbc_at_encoder_select="audio_frame_queue"
3197 pcm_alaw_at_encoder_deps="audiotoolbox"
3198 pcm_alaw_at_encoder_select="audio_frame_queue"
3199 pcm_mulaw_at_encoder_deps="audiotoolbox"
3200 pcm_mulaw_at_encoder_select="audio_frame_queue"
3201 chromaprint_muxer_deps="chromaprint"
3202 h264_videotoolbox_encoder_deps="pthreads"
3203 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3204 hevc_videotoolbox_encoder_deps="pthreads"
3205 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3206 libaom_av1_decoder_deps="libaom"
3207 libaom_av1_encoder_deps="libaom"
3208 libaom_av1_encoder_select="extract_extradata_bsf"
3209 libaribb24_decoder_deps="libaribb24"
3210 libcelt_decoder_deps="libcelt"
3211 libcodec2_decoder_deps="libcodec2"
3212 libcodec2_encoder_deps="libcodec2"
3213 libdav1d_decoder_deps="libdav1d"
3214 libdav1d_decoder_select="atsc_a53"
3215 libdavs2_decoder_deps="libdavs2"
3216 libfdk_aac_decoder_deps="libfdk_aac"
3217 libfdk_aac_encoder_deps="libfdk_aac"
3218 libfdk_aac_encoder_select="audio_frame_queue"
3219 libgme_demuxer_deps="libgme"
3220 libgsm_decoder_deps="libgsm"
3221 libgsm_encoder_deps="libgsm"
3222 libgsm_ms_decoder_deps="libgsm"
3223 libgsm_ms_encoder_deps="libgsm"
3224 libilbc_decoder_deps="libilbc"
3225 libilbc_encoder_deps="libilbc"
3226 libkvazaar_encoder_deps="libkvazaar"
3227 libmodplug_demuxer_deps="libmodplug"
3228 libmp3lame_encoder_deps="libmp3lame"
3229 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3230 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3231 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3232 libopencore_amrnb_encoder_select="audio_frame_queue"
3233 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3234 libopenh264_decoder_deps="libopenh264"
3235 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3236 libopenh264_encoder_deps="libopenh264"
3237 libopenjpeg_decoder_deps="libopenjpeg"
3238 libopenjpeg_encoder_deps="libopenjpeg"
3239 libopenmpt_demuxer_deps="libopenmpt"
3240 libopus_decoder_deps="libopus"
3241 libopus_encoder_deps="libopus"
3242 libopus_encoder_select="audio_frame_queue"
3243 librav1e_encoder_deps="librav1e"
3244 librav1e_encoder_select="extract_extradata_bsf"
3245 librsvg_decoder_deps="librsvg"
3246 libshine_encoder_deps="libshine"
3247 libshine_encoder_select="audio_frame_queue"
3248 libspeex_decoder_deps="libspeex"
3249 libspeex_encoder_deps="libspeex"
3250 libspeex_encoder_select="audio_frame_queue"
3251 libsvtav1_encoder_deps="libsvtav1"
3252 libtheora_encoder_deps="libtheora"
3253 libtwolame_encoder_deps="libtwolame"
3254 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3255 libvorbis_decoder_deps="libvorbis"
3256 libvorbis_encoder_deps="libvorbis libvorbisenc"
3257 libvorbis_encoder_select="audio_frame_queue"
3258 libvpx_vp8_decoder_deps="libvpx"
3259 libvpx_vp8_encoder_deps="libvpx"
3260 libvpx_vp9_decoder_deps="libvpx"
3261 libvpx_vp9_encoder_deps="libvpx"
3262 libwavpack_encoder_deps="libwavpack"
3263 libwavpack_encoder_select="audio_frame_queue"
3264 libwebp_encoder_deps="libwebp"
3265 libwebp_anim_encoder_deps="libwebp"
3266 libx262_encoder_deps="libx262"
3267 libx264_encoder_deps="libx264"
3268 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3269 libx264rgb_encoder_select="libx264_encoder"
3270 libx265_encoder_deps="libx265"
3271 libxavs_encoder_deps="libxavs"
3272 libxavs2_encoder_deps="libxavs2"
3273 libxvid_encoder_deps="libxvid"
3274 libzvbi_teletext_decoder_deps="libzvbi"
3275 vapoursynth_demuxer_deps="vapoursynth"
3276 videotoolbox_suggest="coreservices"
3277 videotoolbox_deps="corefoundation coremedia corevideo"
3278 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3279
3280 # demuxers / muxers
3281 ac3_demuxer_select="ac3_parser"
3282 act_demuxer_select="riffdec"
3283 aiff_muxer_select="iso_media"
3284 asf_demuxer_select="riffdec"
3285 asf_o_demuxer_select="riffdec"
3286 asf_muxer_select="riffenc"
3287 asf_stream_muxer_select="asf_muxer"
3288 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3289 avi_demuxer_select="iso_media riffdec exif"
3290 avi_muxer_select="riffenc"
3291 caf_demuxer_select="iso_media riffdec"
3292 caf_muxer_select="iso_media"
3293 dash_muxer_select="mp4_muxer"
3294 dash_demuxer_deps="libxml2"
3295 dirac_demuxer_select="dirac_parser"
3296 dts_demuxer_select="dca_parser"
3297 dtshd_demuxer_select="dca_parser"
3298 dv_demuxer_select="dvprofile"
3299 dv_muxer_select="dvprofile"
3300 dxa_demuxer_select="riffdec"
3301 eac3_demuxer_select="ac3_parser"
3302 f4v_muxer_select="mov_muxer"
3303 fifo_muxer_deps="threads"
3304 flac_demuxer_select="flac_parser"
3305 flv_muxer_select="aac_adtstoasc_bsf"
3306 gxf_muxer_select="pcm_rechunk_bsf"
3307 hds_muxer_select="flv_muxer"
3308 hls_muxer_select="mpegts_muxer"
3309 hls_muxer_suggest="gcrypt openssl"
3310 image2_alias_pix_demuxer_select="image2_demuxer"
3311 image2_brender_pix_demuxer_select="image2_demuxer"
3312 ipod_muxer_select="mov_muxer"
3313 ismv_muxer_select="mov_muxer"
3314 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3315 latm_muxer_select="aac_adtstoasc_bsf"
3316 matroska_audio_muxer_select="matroska_muxer"
3317 matroska_demuxer_select="iso_media riffdec"
3318 matroska_demuxer_suggest="bzlib lzo zlib"
3319 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3320 mlp_demuxer_select="mlp_parser"
3321 mmf_muxer_select="riffenc"
3322 mov_demuxer_select="iso_media riffdec"
3323 mov_demuxer_suggest="zlib"
3324 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3325 mp3_demuxer_select="mpegaudio_parser"
3326 mp3_muxer_select="mpegaudioheader"
3327 mp4_muxer_select="mov_muxer"
3328 mpegts_demuxer_select="iso_media"
3329 mpegts_muxer_select="adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3330 mpegtsraw_demuxer_select="mpegts_demuxer"
3331 mxf_muxer_select="golomb pcm_rechunk_bsf"
3332 mxf_d10_muxer_select="mxf_muxer"
3333 mxf_opatom_muxer_select="mxf_muxer"
3334 nut_muxer_select="riffenc"
3335 nuv_demuxer_select="riffdec"
3336 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3337 oga_muxer_select="ogg_muxer"
3338 ogg_demuxer_select="dirac_parse"
3339 ogv_muxer_select="ogg_muxer"
3340 opus_muxer_select="ogg_muxer"
3341 psp_muxer_select="mov_muxer"
3342 rtp_demuxer_select="sdp_demuxer"
3343 rtp_muxer_select="golomb jpegtables"
3344 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3345 rtsp_demuxer_select="http_protocol rtpdec"
3346 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3347 sap_demuxer_select="sdp_demuxer"
3348 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3349 sdp_demuxer_select="rtpdec"
3350 smoothstreaming_muxer_select="ismv_muxer"
3351 spdif_demuxer_select="adts_header"
3352 spdif_muxer_select="adts_header"
3353 spx_muxer_select="ogg_muxer"
3354 swf_demuxer_suggest="zlib"
3355 tak_demuxer_select="tak_parser"
3356 truehd_demuxer_select="mlp_parser"
3357 tg2_muxer_select="mov_muxer"
3358 tgp_muxer_select="mov_muxer"
3359 vobsub_demuxer_select="mpegps_demuxer"
3360 w64_demuxer_select="wav_demuxer"
3361 w64_muxer_select="wav_muxer"
3362 wav_demuxer_select="riffdec"
3363 wav_muxer_select="riffenc"
3364 webm_chunk_muxer_select="webm_muxer"
3365 webm_muxer_select="iso_media riffenc"
3366 webm_dash_manifest_demuxer_select="matroska_demuxer"
3367 wtv_demuxer_select="mpegts_demuxer riffdec"
3368 wtv_muxer_select="mpegts_muxer riffenc"
3369 xmv_demuxer_select="riffdec"
3370 xwma_demuxer_select="riffdec"
3371
3372 # indevs / outdevs
3373 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3374 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3375 alsa_indev_deps="alsa"
3376 alsa_outdev_deps="alsa"
3377 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3378 avfoundation_indev_suggest="coregraphics applicationservices"
3379 avfoundation_indev_extralibs="-framework Foundation"
3380 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3381 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3382 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3383 caca_outdev_deps="libcaca"
3384 decklink_deps_any="libdl LoadLibrary"
3385 decklink_indev_deps="decklink threads"
3386 decklink_indev_extralibs="-lstdc++"
3387 decklink_outdev_deps="decklink threads"
3388 decklink_outdev_suggest="libklvanc"
3389 decklink_outdev_extralibs="-lstdc++"
3390 dshow_indev_deps="IBaseFilter"
3391 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3392 fbdev_indev_deps="linux_fb_h"
3393 fbdev_outdev_deps="linux_fb_h"
3394 gdigrab_indev_deps="CreateDIBSection"
3395 gdigrab_indev_extralibs="-lgdi32"
3396 gdigrab_indev_select="bmp_decoder"
3397 iec61883_indev_deps="libiec61883"
3398 jack_indev_deps="libjack"
3399 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3400 kmsgrab_indev_deps="libdrm"
3401 lavfi_indev_deps="avfilter"
3402 libcdio_indev_deps="libcdio"
3403 libdc1394_indev_deps="libdc1394"
3404 openal_indev_deps="openal"
3405 opengl_outdev_deps="opengl"
3406 opengl_outdev_suggest="sdl2"
3407 oss_indev_deps_any="sys_soundcard_h"
3408 oss_outdev_deps_any="sys_soundcard_h"
3409 pulse_indev_deps="libpulse"
3410 pulse_outdev_deps="libpulse"
3411 sdl2_outdev_deps="sdl2"
3412 sndio_indev_deps="sndio"
3413 sndio_outdev_deps="sndio"
3414 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3415 v4l2_indev_suggest="libv4l2"
3416 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3417 v4l2_outdev_suggest="libv4l2"
3418 vfwcap_indev_deps="vfw32 vfwcap_defines"
3419 xcbgrab_indev_deps="libxcb"
3420 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3421 xv_outdev_deps="xlib"
3422
3423 # protocols
3424 async_protocol_deps="threads"
3425 bluray_protocol_deps="libbluray"
3426 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3427 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3428 ffrtmpcrypt_protocol_select="tcp_protocol"
3429 ffrtmphttp_protocol_conflict="librtmp_protocol"
3430 ffrtmphttp_protocol_select="http_protocol"
3431 ftp_protocol_select="tcp_protocol"
3432 gopher_protocol_select="network"
3433 http_protocol_select="tcp_protocol"
3434 http_protocol_suggest="zlib"
3435 httpproxy_protocol_select="tcp_protocol"
3436 httpproxy_protocol_suggest="zlib"
3437 https_protocol_select="tls_protocol"
3438 https_protocol_suggest="zlib"
3439 icecast_protocol_select="http_protocol"
3440 mmsh_protocol_select="http_protocol"
3441 mmst_protocol_select="network"
3442 rtmp_protocol_conflict="librtmp_protocol"
3443 rtmp_protocol_select="tcp_protocol"
3444 rtmp_protocol_suggest="zlib"
3445 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3446 rtmpe_protocol_suggest="zlib"
3447 rtmps_protocol_conflict="librtmp_protocol"
3448 rtmps_protocol_select="tls_protocol"
3449 rtmps_protocol_suggest="zlib"
3450 rtmpt_protocol_select="ffrtmphttp_protocol"
3451 rtmpt_protocol_suggest="zlib"
3452 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3453 rtmpte_protocol_suggest="zlib"
3454 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3455 rtmpts_protocol_suggest="zlib"
3456 rtp_protocol_select="udp_protocol"
3457 schannel_conflict="openssl gnutls libtls mbedtls"
3458 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3459 sctp_protocol_select="network"
3460 securetransport_conflict="openssl gnutls libtls mbedtls"
3461 srtp_protocol_select="rtp_protocol srtp"
3462 tcp_protocol_select="network"
3463 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3464 tls_protocol_select="tcp_protocol"
3465 udp_protocol_select="network"
3466 udplite_protocol_select="network"
3467 unix_protocol_deps="sys_un_h"
3468 unix_protocol_select="network"
3469
3470 # external library protocols
3471 libamqp_protocol_deps="librabbitmq"
3472 libamqp_protocol_select="network"
3473 librtmp_protocol_deps="librtmp"
3474 librtmpe_protocol_deps="librtmp"
3475 librtmps_protocol_deps="librtmp"
3476 librtmpt_protocol_deps="librtmp"
3477 librtmpte_protocol_deps="librtmp"
3478 libsmbclient_protocol_deps="libsmbclient gplv3"
3479 libsrt_protocol_deps="libsrt"
3480 libsrt_protocol_select="network"
3481 libssh_protocol_deps="libssh"
3482 libtls_conflict="openssl gnutls mbedtls"
3483 libzmq_protocol_deps="libzmq"
3484 libzmq_protocol_select="network"
3485
3486 # filters
3487 afftdn_filter_deps="avcodec"
3488 afftdn_filter_select="fft"
3489 afftfilt_filter_deps="avcodec"
3490 afftfilt_filter_select="fft"
3491 afir_filter_deps="avcodec"
3492 afir_filter_select="rdft"
3493 amovie_filter_deps="avcodec avformat"
3494 aresample_filter_deps="swresample"
3495 asr_filter_deps="pocketsphinx"
3496 ass_filter_deps="libass"
3497 atempo_filter_deps="avcodec"
3498 atempo_filter_select="rdft"
3499 avgblur_opencl_filter_deps="opencl"
3500 avgblur_vulkan_filter_deps="vulkan libglslang"
3501 azmq_filter_deps="libzmq"
3502 blackframe_filter_deps="gpl"
3503 bm3d_filter_deps="avcodec"
3504 bm3d_filter_select="dct"
3505 boxblur_filter_deps="gpl"
3506 boxblur_opencl_filter_deps="opencl gpl"
3507 bs2b_filter_deps="libbs2b"
3508 chromaber_vulkan_filter_deps="vulkan libglslang"
3509 colorkey_opencl_filter_deps="opencl"
3510 colormatrix_filter_deps="gpl"
3511 convolution_opencl_filter_deps="opencl"
3512 convolve_filter_deps="avcodec"
3513 convolve_filter_select="fft"
3514 coreimage_filter_deps="coreimage appkit"
3515 coreimage_filter_extralibs="-framework OpenGL"
3516 coreimagesrc_filter_deps="coreimage appkit"
3517 coreimagesrc_filter_extralibs="-framework OpenGL"
3518 cover_rect_filter_deps="avcodec avformat gpl"
3519 cropdetect_filter_deps="gpl"
3520 deconvolve_filter_deps="avcodec"
3521 deconvolve_filter_select="fft"
3522 deinterlace_qsv_filter_deps="libmfx"
3523 deinterlace_vaapi_filter_deps="vaapi"
3524 delogo_filter_deps="gpl"
3525 denoise_vaapi_filter_deps="vaapi"
3526 derain_filter_select="dnn"
3527 deshake_filter_select="pixelutils"
3528 deshake_opencl_filter_deps="opencl"
3529 dilation_opencl_filter_deps="opencl"
3530 dnn_processing_filter_deps="swscale"
3531 dnn_processing_filter_select="dnn"
3532 drawtext_filter_deps="libfreetype"
3533 drawtext_filter_suggest="libfontconfig libfribidi"
3534 elbg_filter_deps="avcodec"
3535 eq_filter_deps="gpl"
3536 erosion_opencl_filter_deps="opencl"
3537 fftfilt_filter_deps="avcodec"
3538 fftfilt_filter_select="rdft"
3539 fftdnoiz_filter_deps="avcodec"
3540 fftdnoiz_filter_select="fft"
3541 find_rect_filter_deps="avcodec avformat gpl"
3542 firequalizer_filter_deps="avcodec"
3543 firequalizer_filter_select="rdft"
3544 flite_filter_deps="libflite"
3545 framerate_filter_select="scene_sad"
3546 freezedetect_filter_select="scene_sad"
3547 frei0r_filter_deps="frei0r libdl"
3548 frei0r_src_filter_deps="frei0r libdl"
3549 fspp_filter_deps="gpl"
3550 headphone_filter_select="fft"
3551 histeq_filter_deps="gpl"
3552 hqdn3d_filter_deps="gpl"
3553 interlace_filter_deps="gpl"
3554 kerndeint_filter_deps="gpl"
3555 ladspa_filter_deps="ladspa libdl"
3556 lensfun_filter_deps="liblensfun version3"
3557 lv2_filter_deps="lv2"
3558 mcdeint_filter_deps="avcodec gpl"
3559 movie_filter_deps="avcodec avformat"
3560 mpdecimate_filter_deps="gpl"
3561 mpdecimate_filter_select="pixelutils"
3562 minterpolate_filter_select="scene_sad"
3563 mptestsrc_filter_deps="gpl"
3564 negate_filter_deps="lut_filter"
3565 nlmeans_opencl_filter_deps="opencl"
3566 nnedi_filter_deps="gpl"
3567 ocr_filter_deps="libtesseract"
3568 ocv_filter_deps="libopencv"
3569 openclsrc_filter_deps="opencl"
3570 overlay_opencl_filter_deps="opencl"
3571 overlay_qsv_filter_deps="libmfx"
3572 overlay_qsv_filter_select="qsvvpp"
3573 overlay_vulkan_filter_deps="vulkan libglslang"
3574 owdenoise_filter_deps="gpl"
3575 pad_opencl_filter_deps="opencl"
3576 pan_filter_deps="swresample"
3577 perspective_filter_deps="gpl"
3578 phase_filter_deps="gpl"
3579 pp7_filter_deps="gpl"
3580 pp_filter_deps="gpl postproc"
3581 prewitt_opencl_filter_deps="opencl"
3582 procamp_vaapi_filter_deps="vaapi"
3583 program_opencl_filter_deps="opencl"
3584 pullup_filter_deps="gpl"
3585 removelogo_filter_deps="avcodec avformat swscale"
3586 repeatfields_filter_deps="gpl"
3587 resample_filter_deps="avresample"
3588 roberts_opencl_filter_deps="opencl"
3589 rubberband_filter_deps="librubberband"
3590 sab_filter_deps="gpl swscale"
3591 scale2ref_filter_deps="swscale"
3592 scale_filter_deps="swscale"
3593 scale_qsv_filter_deps="libmfx"
3594 scdet_filter_select="scene_sad"
3595 select_filter_select="scene_sad"
3596 sharpness_vaapi_filter_deps="vaapi"
3597 showcqt_filter_deps="avcodec avformat swscale"
3598 showcqt_filter_suggest="libfontconfig libfreetype"
3599 showcqt_filter_select="fft"
3600 showfreqs_filter_deps="avcodec"
3601 showfreqs_filter_select="fft"
3602 showspatial_filter_select="fft"
3603 showspectrum_filter_deps="avcodec"
3604 showspectrum_filter_select="fft"
3605 showspectrumpic_filter_deps="avcodec"
3606 showspectrumpic_filter_select="fft"
3607 signature_filter_deps="gpl avcodec avformat"
3608 sinc_filter_select="rdft"
3609 smartblur_filter_deps="gpl swscale"
3610 sobel_opencl_filter_deps="opencl"
3611 sofalizer_filter_deps="libmysofa avcodec"
3612 sofalizer_filter_select="fft"
3613 spectrumsynth_filter_deps="avcodec"
3614 spectrumsynth_filter_select="fft"
3615 spp_filter_deps="gpl avcodec"
3616 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3617 sr_filter_deps="avformat swscale"
3618 sr_filter_select="dnn"
3619 stereo3d_filter_deps="gpl"
3620 subtitles_filter_deps="avformat avcodec libass"
3621 super2xsai_filter_deps="gpl"
3622 pixfmts_super2xsai_test_deps="super2xsai_filter"
3623 superequalizer_filter_select="rdft"
3624 surround_filter_select="rdft"
3625 tinterlace_filter_deps="gpl"
3626 tinterlace_merge_test_deps="tinterlace_filter"
3627 tinterlace_pad_test_deps="tinterlace_filter"
3628 tonemap_filter_deps="const_nan"
3629 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3630 tonemap_opencl_filter_deps="opencl const_nan"
3631 transpose_opencl_filter_deps="opencl"
3632 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3633 unsharp_opencl_filter_deps="opencl"
3634 uspp_filter_deps="gpl avcodec"
3635 vaguedenoiser_filter_deps="gpl"
3636 vidstabdetect_filter_deps="libvidstab"
3637 vidstabtransform_filter_deps="libvidstab"
3638 libvmaf_filter_deps="libvmaf pthreads"
3639 zmq_filter_deps="libzmq"
3640 zoompan_filter_deps="swscale"
3641 zscale_filter_deps="libzimg const_nan"
3642 scale_vaapi_filter_deps="vaapi"
3643 scale_vulkan_filter_deps="vulkan libglslang"
3644 vpp_qsv_filter_deps="libmfx"
3645 vpp_qsv_filter_select="qsvvpp"
3646 xfade_opencl_filter_deps="opencl"
3647 yadif_cuda_filter_deps="ffnvcodec"
3648 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3649
3650 # examples
3651 avio_list_dir_deps="avformat avutil"
3652 avio_reading_deps="avformat avcodec avutil"
3653 decode_audio_example_deps="avcodec avutil"
3654 decode_video_example_deps="avcodec avutil"
3655 demuxing_decoding_example_deps="avcodec avformat avutil"
3656 encode_audio_example_deps="avcodec avutil"
3657 encode_video_example_deps="avcodec avutil"
3658 extract_mvs_example_deps="avcodec avformat avutil"
3659 filter_audio_example_deps="avfilter avutil"
3660 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3661 filtering_video_example_deps="avfilter avcodec avformat avutil"
3662 http_multiclient_example_deps="avformat avutil fork"
3663 hw_decode_example_deps="avcodec avformat avutil"
3664 metadata_example_deps="avformat avutil"
3665 muxing_example_deps="avcodec avformat avutil swscale"
3666 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3667 remuxing_example_deps="avcodec avformat avutil"
3668 resampling_audio_example_deps="avutil swresample"
3669 scaling_video_example_deps="avutil swscale"
3670 transcode_aac_example_deps="avcodec avformat swresample"
3671 transcoding_example_deps="avfilter avcodec avformat avutil"
3672 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3673 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3674
3675 # EXTRALIBS_LIST
3676 cpu_init_extralibs="pthreads_extralibs"
3677 cws2fws_extralibs="zlib_extralibs"
3678
3679 # libraries, in any order
3680 avcodec_deps="avutil"
3681 avcodec_suggest="libm"
3682 avcodec_select="null_bsf"
3683 avdevice_deps="avformat avcodec avutil"
3684 avdevice_suggest="libm"
3685 avfilter_deps="avutil"
3686 avfilter_suggest="libm"
3687 avformat_deps="avcodec avutil"
3688 avformat_suggest="libm network zlib"
3689 avresample_deps="avutil"
3690 avresample_suggest="libm"
3691 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3692 postproc_deps="avutil gpl"
3693 postproc_suggest="libm"
3694 swresample_deps="avutil"
3695 swresample_suggest="libm libsoxr"
3696 swscale_deps="avutil"
3697 swscale_suggest="libm"
3698
3699 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3700 avfilter_extralibs="pthreads_extralibs"
3701 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3702
3703 # programs
3704 ffmpeg_deps="avcodec avfilter avformat"
3705 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3706                hflip_filter null_filter
3707                transpose_filter trim_filter vflip_filter"
3708 ffmpeg_suggest="ole32 psapi shell32"
3709 ffplay_deps="avcodec avformat swscale swresample sdl2"
3710 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3711 ffplay_suggest="shell32"
3712 ffprobe_deps="avcodec avformat"
3713 ffprobe_suggest="shell32"
3714
3715 # documentation
3716 podpages_deps="perl"
3717 manpages_deps="perl pod2man"
3718 htmlpages_deps="perl"
3719 htmlpages_deps_any="makeinfo_html texi2html"
3720 txtpages_deps="perl makeinfo"
3721 doc_deps_any="manpages htmlpages podpages txtpages"
3722
3723 # default parameters
3724
3725 logfile="ffbuild/config.log"
3726
3727 # installation paths
3728 prefix_default="/usr/local"
3729 bindir_default='${prefix}/bin'
3730 datadir_default='${prefix}/share/ffmpeg'
3731 docdir_default='${prefix}/share/doc/ffmpeg'
3732 incdir_default='${prefix}/include'
3733 libdir_default='${prefix}/lib'
3734 mandir_default='${prefix}/share/man'
3735
3736 # toolchain
3737 ar_default="ar"
3738 cc_default="gcc"
3739 cxx_default="g++"
3740 host_cc_default="gcc"
3741 doxygen_default="doxygen"
3742 install="install"
3743 ln_s_default="ln -s -f"
3744 nm_default="nm -g"
3745 pkg_config_default=pkg-config
3746 ranlib_default="ranlib"
3747 strip_default="strip"
3748 version_script='--version-script'
3749 objformat="elf32"
3750 x86asmexe_default="nasm"
3751 windres_default="windres"
3752 striptype="direct"
3753
3754 # OS
3755 target_os_default=$(tolower $(uname -s))
3756 host_os=$target_os_default
3757
3758 # machine
3759 if test "$target_os_default" = aix; then
3760     arch_default=$(uname -p)
3761     strip_default="strip -X32_64"
3762     nm_default="nm -g -X32_64"
3763 else
3764     arch_default=$(uname -m)
3765 fi
3766 cpu="generic"
3767 intrinsics="none"
3768
3769 # configurable options
3770 enable $PROGRAM_LIST
3771 enable $DOCUMENT_LIST
3772 enable $EXAMPLE_LIST
3773 enable $(filter_out avresample $LIBRARY_LIST)
3774 enable stripping
3775
3776 enable asm
3777 enable debug
3778 enable doc
3779 enable faan faandct faanidct
3780 enable large_tests
3781 enable optimizations
3782 enable runtime_cpudetect
3783 enable safe_bitstream_reader
3784 enable static
3785 enable swscale_alpha
3786 enable valgrind_backtrace
3787
3788 sws_max_filter_size_default=256
3789 set_default sws_max_filter_size
3790
3791 # internal components are enabled by default
3792 enable $EXTRALIBS_LIST
3793
3794 # Avoid external, non-system, libraries getting enabled by dependency resolution
3795 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3796
3797 # build settings
3798 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3799 LIBPREF="lib"
3800 LIBSUF=".a"
3801 FULLNAME='$(NAME)$(BUILDSUF)'
3802 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3803 SLIBPREF="lib"
3804 SLIBSUF=".so"
3805 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3806 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3807 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3808 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3809 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3810 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3811 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3812
3813 asflags_filter=echo
3814 cflags_filter=echo
3815 ldflags_filter=echo
3816
3817 AS_C='-c'
3818 AS_O='-o $@'
3819 CC_C='-c'
3820 CC_E='-E -o $@'
3821 CC_O='-o $@'
3822 CXX_C='-c'
3823 CXX_O='-o $@'
3824 OBJCC_C='-c'
3825 OBJCC_E='-E -o $@'
3826 OBJCC_O='-o $@'
3827 X86ASM_O='-o $@'
3828 LD_O='-o $@'
3829 LD_LIB='-l%'
3830 LD_PATH='-L'
3831 HOSTCC_C='-c'
3832 HOSTCC_E='-E -o $@'
3833 HOSTCC_O='-o $@'
3834 HOSTLD_O='-o $@'
3835 NVCC_C='-c'
3836 NVCC_O='-o $@'
3837
3838 host_extralibs='-lm'
3839 host_cflags_filter=echo
3840 host_ldflags_filter=echo
3841
3842 target_path='$(CURDIR)'
3843
3844 # since the object filename is not given with the -MM flag, the compiler
3845 # is only able to print the basename, and we must add the path ourselves
3846 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3847 DEPFLAGS='-MM'
3848
3849 mkdir -p ffbuild
3850
3851 # find source path
3852 if test -f configure; then
3853     source_path=.
3854 elif test -f src/configure; then
3855     source_path=src
3856 else
3857     source_path=$(cd $(dirname "$0"); pwd)
3858     case "$source_path" in
3859         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3860     esac
3861     test -e "$source_path/config.h" &&
3862         die "Out of tree builds are impossible with config.h in source dir."
3863 fi
3864
3865 for v in "$@"; do
3866     r=${v#*=}
3867     l=${v%"$r"}
3868     r=$(sh_quote "$r")
3869     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3870 done
3871
3872 find_things_extern(){
3873     thing=$1
3874     pattern=$2
3875     file=$source_path/$3
3876     out=${4:-$thing}
3877     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3878 }
3879
3880 find_filters_extern(){
3881     file=$source_path/$1
3882     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3883 }
3884
3885 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3886 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3887 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3888 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3889 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3890 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3891 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3892 CODEC_LIST="
3893     $ENCODER_LIST
3894     $DECODER_LIST
3895 "
3896 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3897 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3898 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3899 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3900
3901 AVCODEC_COMPONENTS_LIST="
3902     $BSF_LIST
3903     $DECODER_LIST
3904     $ENCODER_LIST
3905     $HWACCEL_LIST
3906     $PARSER_LIST
3907 "
3908
3909 AVDEVICE_COMPONENTS_LIST="
3910     $INDEV_LIST
3911     $OUTDEV_LIST
3912 "
3913
3914 AVFILTER_COMPONENTS_LIST="
3915     $FILTER_LIST
3916 "
3917
3918 AVFORMAT_COMPONENTS_LIST="
3919     $DEMUXER_LIST
3920     $MUXER_LIST
3921     $PROTOCOL_LIST
3922 "
3923
3924 ALL_COMPONENTS="
3925     $AVCODEC_COMPONENTS_LIST
3926     $AVDEVICE_COMPONENTS_LIST
3927     $AVFILTER_COMPONENTS_LIST
3928     $AVFORMAT_COMPONENTS_LIST
3929 "
3930
3931 for n in $COMPONENT_LIST; do
3932     v=$(toupper ${n%s})_LIST
3933     eval enable \$$v
3934     eval ${n}_if_any="\$$v"
3935 done
3936
3937 enable $ARCH_EXT_LIST
3938
3939 die_unknown(){
3940     echo "Unknown option \"$1\"."
3941     echo "See $0 --help for available options."
3942     exit 1
3943 }
3944
3945 print_in_columns() {
3946     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3947     {
3948         num_cols = width > col_width ? int(width / col_width) : 1;
3949         num_rows = int((NF + num_cols-1) / num_cols);
3950         y = x = 1;
3951         for (y = 1; y <= num_rows; y++) {
3952             i = y;
3953             for (x = 1; x <= num_cols; x++) {
3954                 if (i <= NF) {
3955                   line = sprintf("%s%-" col_width "s", line, $i);
3956                 }
3957                 i = i + num_rows;
3958             }
3959             print line; line = "";
3960         }
3961     }' | sed 's/ *$//'
3962 }
3963
3964 show_list() {
3965     suffix=_$1
3966     shift
3967     echo $* | sed s/$suffix//g | print_in_columns
3968     exit 0
3969 }
3970
3971 rand_list(){
3972     IFS=', '
3973     set -- $*
3974     unset IFS
3975     for thing; do
3976         comp=${thing%:*}
3977         prob=${thing#$comp}
3978         prob=${prob#:}
3979         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3980         echo "prob ${prob:-0.5}"
3981         printf '%s\n' $comp
3982     done
3983 }
3984
3985 do_random(){
3986     action=$1
3987     shift
3988     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3989     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3990 }
3991
3992 for opt do
3993     optval="${opt#*=}"
3994     case "$opt" in
3995         --extra-ldflags=*)
3996             add_ldflags $optval
3997         ;;
3998         --extra-ldexeflags=*)
3999             add_ldexeflags $optval
4000         ;;
4001         --extra-ldsoflags=*)
4002             add_ldsoflags $optval
4003         ;;
4004         --extra-ldlibflags=*)
4005             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4006                  "removed in the future. Use --extra-ldsoflags instead."
4007             add_ldsoflags $optval
4008         ;;
4009         --extra-libs=*)
4010             add_extralibs $optval
4011         ;;
4012         --disable-devices)
4013             disable $INDEV_LIST $OUTDEV_LIST
4014         ;;
4015         --enable-debug=*)
4016             debuglevel="$optval"
4017         ;;
4018         --disable-programs)
4019             disable $PROGRAM_LIST
4020         ;;
4021         --disable-everything)
4022             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4023         ;;
4024         --disable-all)
4025             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4026             disable $LIBRARY_LIST $PROGRAM_LIST doc
4027             enable avutil
4028         ;;
4029         --enable-random|--disable-random)
4030             action=${opt%%-random}
4031             do_random ${action#--} $COMPONENT_LIST
4032         ;;
4033         --enable-random=*|--disable-random=*)
4034             action=${opt%%-random=*}
4035             do_random ${action#--} $optval
4036         ;;
4037         --enable-sdl)
4038             enable sdl2
4039         ;;
4040         --enable-*=*|--disable-*=*)
4041             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4042             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4043             eval list=\$$(toupper $thing)_LIST
4044             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4045             list=$(filter "$name" $list)
4046             [ "$list" = "" ] && warn "Option $opt did not match anything"
4047             test $action = enable && warn_if_gets_disabled $list
4048             $action $list
4049         ;;
4050         --enable-yasm|--disable-yasm)
4051             warn "The ${opt} option is only provided for compatibility and will be\n"\
4052                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4053             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4054         ;;
4055         --yasmexe=*)
4056             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4057                  "removed in the future. Use --x86asmexe instead."
4058             x86asmexe="$optval"
4059         ;;
4060         --enable-?*|--disable-?*)
4061             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4062             if is_in $option $COMPONENT_LIST; then
4063                 test $action = disable && action=unset
4064                 eval $action \$$(toupper ${option%s})_LIST
4065             elif is_in $option $CMDLINE_SELECT; then
4066                 $action $option
4067             else
4068                 die_unknown $opt
4069             fi
4070         ;;
4071         --list-*)
4072             NAME="${opt#--list-}"
4073             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4074             NAME=${NAME%s}
4075             eval show_list $NAME \$$(toupper $NAME)_LIST
4076         ;;
4077         --help|-h) show_help
4078         ;;
4079         --quiet|-q) quiet=yes
4080         ;;
4081         --fatal-warnings) enable fatal_warnings
4082         ;;
4083         --libfuzzer=*)
4084             libfuzzer_path="$optval"
4085         ;;
4086         *)
4087             optname="${opt%%=*}"
4088             optname="${optname#--}"
4089             optname=$(echo "$optname" | sed 's/-/_/g')
4090             if is_in $optname $CMDLINE_SET; then
4091                 eval $optname='$optval'
4092             elif is_in $optname $CMDLINE_APPEND; then
4093                 append $optname "$optval"
4094             else
4095                 die_unknown $opt
4096             fi
4097         ;;
4098     esac
4099 done
4100
4101 for e in $env; do
4102     eval "export $e"
4103 done
4104
4105 if disabled autodetect; then
4106
4107     # Unless iconv is explicitely disabled by the user, we still want to probe
4108     # for the iconv from the libc.
4109     disabled iconv || enable libc_iconv
4110
4111     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4112     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4113 fi
4114 # Mark specifically enabled, but normally autodetected libraries as requested.
4115 for lib in $AUTODETECT_LIBS; do
4116     enabled $lib && request $lib
4117 done
4118 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4119 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4120 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4121
4122 disabled logging && logfile=/dev/null
4123
4124 # command line configuration sanity checks
4125
4126 # we need to build at least one lib type
4127 if ! enabled_any static shared; then
4128     cat <<EOF
4129 At least one library type must be built.
4130 Specify --enable-static to build the static libraries or --enable-shared to
4131 build the shared libraries as well. To only build the shared libraries specify
4132 --disable-static in addition to --enable-shared.
4133 EOF
4134     exit 1
4135 fi
4136
4137 die_license_disabled() {
4138     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4139 }
4140
4141 die_license_disabled_gpl() {
4142     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4143 }
4144
4145 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4146 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4147
4148 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4149 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4150
4151 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4152
4153 if enabled nonfree; then
4154     license="nonfree and unredistributable"
4155 elif enabled gplv3; then
4156     license="GPL version 3 or later"
4157 elif enabled lgplv3; then
4158     license="LGPL version 3 or later"
4159 elif enabled gpl; then
4160     license="GPL version 2 or later"
4161 else
4162     license="LGPL version 2.1 or later"
4163 fi
4164
4165 enabled_all gnutls openssl &&
4166     die "GnuTLS and OpenSSL must not be enabled at the same time."
4167
4168 enabled_all gnutls mbedtls &&
4169     die "GnuTLS and mbedTLS must not be enabled at the same time."
4170
4171 enabled_all openssl mbedtls &&
4172     die "OpenSSL and mbedTLS must not be enabled at the same time."
4173
4174 # Disable all the library-specific components if the library itself
4175 # is disabled, see AVCODEC_LIST and following _LIST variables.
4176
4177 disable_components(){
4178     disabled ${1} && disable $(
4179         eval components="\$$(toupper ${1})_COMPONENTS"
4180         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4181     )
4182 }
4183
4184 map 'disable_components $v' $LIBRARY_LIST
4185
4186 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4187 set >> $logfile
4188
4189 test -n "$valgrind" && toolchain="valgrind-memcheck"
4190
4191 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4192     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4193     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4194 }
4195
4196 case "$toolchain" in
4197     *-asan)
4198         cc_default="${toolchain%-asan}"
4199         add_cflags  -fsanitize=address
4200         add_ldflags -fsanitize=address
4201     ;;
4202     *-msan)
4203         cc_default="${toolchain%-msan}"
4204         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4205         add_ldflags -fsanitize=memory
4206     ;;
4207     *-tsan)
4208         cc_default="${toolchain%-tsan}"
4209         add_cflags  -fsanitize=thread
4210         add_ldflags -fsanitize=thread
4211         case "$toolchain" in
4212             gcc-tsan)
4213                 add_cflags  -fPIC
4214                 add_ldflags -fPIC
4215                 ;;
4216         esac
4217     ;;
4218     *-usan)
4219         cc_default="${toolchain%-usan}"
4220         add_cflags  -fsanitize=undefined
4221         add_ldflags -fsanitize=undefined
4222     ;;
4223     valgrind-*)
4224         target_exec_default="valgrind"
4225         case "$toolchain" in
4226             valgrind-massif)
4227                 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"
4228                 ;;
4229             valgrind-memcheck)
4230                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4231                 ;;
4232         esac
4233     ;;
4234     msvc)
4235         # Check whether the current MSVC version needs the C99 converter.
4236         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4237         # support enough of C99 to build ffmpeg. Default to the new
4238         # behaviour if the regexp was unable to match anything, since this
4239         # successfully parses the version number of existing supported
4240         # versions that require the converter (MSVC 2010 and 2012).
4241         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4242         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4243             cc_default="cl.exe"
4244             cxx_default="cl.exe"
4245         else
4246             die "Unsupported MSVC version (2013 or newer required)"
4247         fi
4248         ld_default="$source_path/compat/windows/mslink"
4249         nm_default="dumpbin.exe -symbols"
4250         ar_default="lib.exe"
4251         case "$arch" in
4252         aarch64|arm64)
4253             as_default="armasm64.exe"
4254             ;;
4255         arm*)
4256             as_default="armasm.exe"
4257             ;;
4258         esac
4259         target_os_default="win32"
4260         # Use a relative path for TMPDIR. This makes sure all the
4261         # ffconf temp files are written with a relative path, avoiding
4262         # issues with msys/win32 path conversion for MSVC parameters
4263         # such as -Fo<file> or -out:<file>.
4264         TMPDIR=.
4265     ;;
4266     icl)
4267         cc_default="icl"
4268         ld_default="xilink"
4269         nm_default="dumpbin -symbols"
4270         ar_default="xilib"
4271         target_os_default="win32"
4272         TMPDIR=.
4273     ;;
4274     gcov)
4275         add_cflags  -fprofile-arcs -ftest-coverage
4276         add_ldflags -fprofile-arcs -ftest-coverage
4277     ;;
4278     llvm-cov)
4279         add_cflags -fprofile-arcs -ftest-coverage
4280         add_ldflags --coverage
4281     ;;
4282     hardened)
4283         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4284         add_cflags   -fno-strict-overflow -fstack-protector-all
4285         add_ldflags  -Wl,-z,relro -Wl,-z,now
4286         add_cflags   -fPIE
4287         add_ldexeflags -fPIE -pie
4288     ;;
4289     ?*)
4290         die "Unknown toolchain $toolchain"
4291     ;;
4292 esac
4293
4294 if test -n "$cross_prefix"; then
4295     test -n "$arch" && test -n "$target_os" ||
4296         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4297     enable cross_compile
4298 fi
4299
4300 set_default target_os
4301 if test "$target_os" = android; then
4302     cc_default="clang"
4303 fi
4304
4305 ar_default="${cross_prefix}${ar_default}"
4306 cc_default="${cross_prefix}${cc_default}"
4307 cxx_default="${cross_prefix}${cxx_default}"
4308 nm_default="${cross_prefix}${nm_default}"
4309 pkg_config_default="${cross_prefix}${pkg_config_default}"
4310 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4311     ranlib_default="${cross_prefix}${ranlib_default} -D"
4312 else
4313     ranlib_default="${cross_prefix}${ranlib_default}"
4314 fi
4315 strip_default="${cross_prefix}${strip_default}"
4316 windres_default="${cross_prefix}${windres_default}"
4317
4318 sysinclude_default="${sysroot}/usr/include"
4319
4320 if enabled cuda_sdk; then
4321     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4322     enable cuda_nvcc
4323 fi
4324
4325 if enabled cuda_nvcc; then
4326     nvcc_default="nvcc"
4327     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4328 else
4329     nvcc_default="clang"
4330     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4331     NVCC_C=""
4332 fi
4333
4334 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4335     target_exec x86asmexe nvcc
4336 enabled cross_compile || host_cc_default=$cc
4337 set_default host_cc
4338
4339 pkg_config_fail_message=""
4340 if ! $pkg_config --version >/dev/null 2>&1; then
4341     warn "$pkg_config not found, library detection may fail."
4342     pkg_config=false
4343 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4344     pkg_config_fail_message="
4345 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4346 fi
4347
4348 if test $doxygen != $doxygen_default && \
4349   ! $doxygen --version >/dev/null 2>&1; then
4350     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4351 fi
4352
4353 exesuf() {
4354     case $1 in
4355         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4356     esac
4357 }
4358
4359 EXESUF=$(exesuf $target_os)
4360 HOSTEXESUF=$(exesuf $host_os)
4361
4362 # set temporary file name
4363 : ${TMPDIR:=$TEMPDIR}
4364 : ${TMPDIR:=$TMP}
4365 : ${TMPDIR:=/tmp}
4366
4367 if [ -n "$tempprefix" ] ; then
4368     mktemp(){
4369         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4370         echo "$tmpname"
4371         mkdir "$tmpname"
4372     }
4373 elif ! test_cmd mktemp -u XXXXXX; then
4374     # simple replacement for missing mktemp
4375     # NOT SAFE FOR GENERAL USE
4376     mktemp(){
4377         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4378         echo "$tmpname"
4379         mkdir "$tmpname"
4380     }
4381 fi
4382
4383 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4384     die "Unable to create temporary directory in $TMPDIR."
4385
4386 tmpfile(){
4387     tmp="${FFTMPDIR}/test"$2
4388     (set -C; exec > $tmp) 2> /dev/null ||
4389         die "Unable to create temporary file in $FFTMPDIR."
4390     eval $1=$tmp
4391 }
4392
4393 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4394 trap 'exit 2' INT
4395
4396 tmpfile TMPASM .asm
4397 tmpfile TMPC   .c
4398 tmpfile TMPCPP .cpp
4399 tmpfile TMPE   $EXESUF
4400 tmpfile TMPH   .h
4401 tmpfile TMPM   .m
4402 tmpfile TMPCU  .cu
4403 tmpfile TMPO   .o
4404 tmpfile TMPS   .S
4405 tmpfile TMPSH  .sh
4406 tmpfile TMPV   .ver
4407
4408 unset -f mktemp
4409
4410 chmod +x $TMPE
4411
4412 # make sure we can execute files in $TMPDIR
4413 cat > $TMPSH 2>> $logfile <<EOF
4414 #! /bin/sh
4415 EOF
4416 chmod +x $TMPSH >> $logfile 2>&1
4417 if ! $TMPSH >> $logfile 2>&1; then
4418     cat <<EOF
4419 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4420 variable to another directory and make sure that it is not mounted noexec.
4421 EOF
4422     die "Sanity test failed."
4423 fi
4424
4425 armasm_flags(){
4426     for flag; do
4427         case $flag in
4428             # Filter out MSVC cl.exe options from cflags that shouldn't
4429             # be passed to gas-preprocessor
4430             -M[TD]*)                                            ;;
4431             *)                  echo $flag                      ;;
4432         esac
4433    done
4434 }
4435
4436 cparser_flags(){
4437     for flag; do
4438         case $flag in
4439             -Wno-switch)             echo -Wno-switch-enum ;;
4440             -Wno-format-zero-length) ;;
4441             -Wdisabled-optimization) ;;
4442             -Wno-pointer-sign)       echo -Wno-other ;;
4443             *)                       echo $flag ;;
4444         esac
4445     done
4446 }
4447
4448 msvc_common_flags(){
4449     for flag; do
4450         case $flag in
4451             # In addition to specifying certain flags under the compiler
4452             # specific filters, they must be specified here as well or else the
4453             # generic catch all at the bottom will print the original flag.
4454             -Wall)                ;;
4455             -Wextra)              ;;
4456             -std=c*)              ;;
4457             # Common flags
4458             -fomit-frame-pointer) ;;
4459             -g)                   echo -Z7 ;;
4460             -fno-math-errno)      ;;
4461             -fno-common)          ;;
4462             -fno-signed-zeros)    ;;
4463             -fPIC)                ;;
4464             -mthumb)              ;;
4465             -march=*)             ;;
4466             -lz)                  echo zlib.lib ;;
4467             -lx264)               echo libx264.lib ;;
4468             -lstdc++)             ;;
4469             -l*)                  echo ${flag#-l}.lib ;;
4470             -LARGEADDRESSAWARE)   echo $flag ;;
4471             -L*)                  echo -libpath:${flag#-L} ;;
4472             -Wl,*)                ;;
4473             *)                    echo $flag ;;
4474         esac
4475     done
4476 }
4477
4478 msvc_flags(){
4479     msvc_common_flags "$@"
4480     for flag; do
4481         case $flag in
4482             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4483                                        -wd4554 ;;
4484             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4485                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4486                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4487                                        -wd4307 \
4488                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4489         esac
4490     done
4491 }
4492
4493 icl_flags(){
4494     msvc_common_flags "$@"
4495     for flag; do
4496         case $flag in
4497             # Despite what Intel's documentation says -Wall, which is supported
4498             # on Windows, does enable remarks so disable them here.
4499             -Wall)                echo $flag -Qdiag-disable:remark ;;
4500             -std=c99)             echo -Qstd=c99 ;;
4501             -flto)                echo -ipo ;;
4502         esac
4503     done
4504 }
4505
4506 icc_flags(){
4507     for flag; do
4508         case $flag in
4509             -flto)                echo -ipo ;;
4510             *)                    echo $flag ;;
4511         esac
4512     done
4513 }
4514
4515 suncc_flags(){
4516     for flag; do
4517         case $flag in
4518             -march=*|-mcpu=*)
4519                 case "${flag#*=}" in
4520                     native)                   echo -xtarget=native       ;;
4521                     v9|niagara)               echo -xarch=sparc          ;;
4522                     ultrasparc)               echo -xarch=sparcvis       ;;
4523                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4524                     i586|pentium)             echo -xchip=pentium        ;;
4525                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4526                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4527                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4528                     pentium4*)          echo -xtarget=pentium4           ;;
4529                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4530                     *-sse3)             echo -xarch=sse3                 ;;
4531                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4532                     bonnell)                   echo -xarch=ssse3         ;;
4533                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4534                     westmere)                  echo -xtarget=westmere    ;;
4535                     silvermont)                echo -xarch=sse4_2        ;;
4536                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4537                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4538                                                echo -xarch=avx           ;;
4539                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4540                     btver1)                    echo -xarch=amdsse4a      ;;
4541                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4542                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4543                     k8|opteron|athlon64|athlon-fx)
4544                                                echo -xarch=sse2a         ;;
4545                     athlon*)                   echo -xarch=pentium_proa  ;;
4546                 esac
4547                 ;;
4548             -std=c99)             echo -xc99              ;;
4549             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4550             -fPIC)                echo -KPIC -xcode=pic32 ;;
4551             -W*,*)                echo $flag              ;;
4552             -f*-*|-W*|-mimpure-text)                      ;;
4553             -shared)              echo -G                 ;;
4554             *)                    echo $flag              ;;
4555         esac
4556     done
4557 }
4558
4559 probe_cc(){
4560     pfx=$1
4561     _cc=$2
4562     first=$3
4563
4564     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4565     unset _ld_o _ldflags _ld_lib _ld_path
4566     unset _depflags _DEPCMD _DEPFLAGS
4567     _flags_filter=echo
4568
4569     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4570         true # no-op to avoid reading stdin in following checks
4571     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4572         _type=llvm_gcc
4573         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4574         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4575         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4576         _cflags_speed='-O3'
4577         _cflags_size='-Os'
4578     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4579         _type=gcc
4580         gcc_version=$($_cc --version | head -n1)
4581         gcc_basever=$($_cc -dumpversion)
4582         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4583         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4584         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4585         case $gcc_basever in
4586             2) ;;
4587             2.*) ;;
4588             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4589         esac
4590         if [ "$first" = true ]; then
4591             case $gcc_basever in
4592                 4.2*)
4593                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4594             esac
4595         fi
4596         _cflags_speed='-O3'
4597         _cflags_size='-Os'
4598     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4599         _type=icc
4600         _ident=$($_cc --version | head -n1)
4601         _depflags='-MMD'
4602         _cflags_speed='-O3'
4603         _cflags_size='-Os'
4604         _cflags_noopt='-O1'
4605         _flags_filter=icc_flags
4606     elif $_cc -v 2>&1 | grep -q xlc; then
4607         _type=xlc
4608         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4609         _cflags_speed='-O5'
4610         _cflags_size='-O5 -qcompact'
4611     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4612         test -d "$sysroot" || die "No valid sysroot specified."
4613         _type=armcc
4614         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4615         armcc_conf="$PWD/armcc.conf"
4616         $_cc --arm_linux_configure                 \
4617              --arm_linux_config_file="$armcc_conf" \
4618              --configure_sysroot="$sysroot"        \
4619              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4620              die "Error creating armcc configuration file."
4621         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4622         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4623         as_default="${cross_prefix}gcc"
4624         _depflags='-MMD'
4625         _cflags_speed='-O3'
4626         _cflags_size='-Os'
4627     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4628         _type=clang
4629         _ident=$($_cc --version 2>/dev/null | head -n1)
4630         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4631         _cflags_speed='-O3'
4632         _cflags_size='-Oz'
4633     elif $_cc -V 2>&1 | grep -q Sun; then
4634         _type=suncc
4635         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4636         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4637         _DEPFLAGS='-xM1 -xc99'
4638         _ldflags='-std=c99'
4639         _cflags_speed='-O5'
4640         _cflags_size='-O5 -xspace'
4641         _flags_filter=suncc_flags
4642     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4643         _type=pathscale
4644         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4645         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4646         _cflags_speed='-O2'
4647         _cflags_size='-Os'
4648         _flags_filter='filter_out -Wdisabled-optimization'
4649     elif $_cc -v 2>&1 | grep -q Open64; then
4650         _type=open64
4651         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4652         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4653         _cflags_speed='-O2'
4654         _cflags_size='-Os'
4655         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4656     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4657         _type=armasm
4658         _ident=$($_cc | head -n1)
4659         # 4509: "This form of conditional instruction is deprecated"
4660         _flags="-nologo -ignore 4509"
4661         _flags_filter=armasm_flags
4662     elif $_cc 2>&1 | grep -q Intel; then
4663         _type=icl
4664         _ident=$($_cc 2>&1 | head -n1)
4665         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4666         # Not only is O3 broken on 13.x+ but it is slower on all previous
4667         # versions (tested) as well.
4668         _cflags_speed="-O2"
4669         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4670         if $_cc 2>&1 | grep -q Linker; then
4671             _ld_o='-out:$@'
4672         else
4673             _ld_o='-Fe$@'
4674         fi
4675         _cc_o='-Fo$@'
4676         _cc_e='-P'
4677         _flags_filter=icl_flags
4678         _ld_lib='lib%.a'
4679         _ld_path='-libpath:'
4680         # -Qdiag-error to make icl error when seeing certain unknown arguments
4681         _flags='-nologo -Qdiag-error:4044,10157'
4682         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4683         # with MSVC which enables it by default.
4684         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4685         disable stripping
4686     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4687         # lld can emulate multiple different linkers; in ms link.exe mode,
4688         # the -? parameter gives the help output which contains an identifyable
4689         # string, while it gives an error in other modes.
4690         _type=lld-link
4691         # The link.exe mode doesn't have a switch for getting the version,
4692         # but we can force it back to gnu mode and get the version from there.
4693         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4694         _ld_o='-out:$@'
4695         _flags_filter=msvc_flags
4696         _ld_lib='lib%.a'
4697         _ld_path='-libpath:'
4698     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4699         _type=msvc
4700         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4701             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4702         else
4703             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4704         fi
4705         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4706         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4707         _cflags_speed="-O2"
4708         _cflags_size="-O1"
4709         _cflags_noopt="-O1"
4710         if $_cc -nologo- 2>&1 | grep -q Linker; then
4711             _ld_o='-out:$@'
4712         else
4713             _ld_o='-Fe$@'
4714         fi
4715         _cc_o='-Fo$@'
4716         _cc_e='-P -Fi$@'
4717         _flags_filter=msvc_flags
4718         _ld_lib='lib%.a'
4719         _ld_path='-libpath:'
4720         _flags='-nologo'
4721         disable stripping
4722     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4723         _type=cparser
4724         _ident=$($_cc --version | head -n1)
4725         _depflags='-MMD'
4726         _cflags_speed='-O4'
4727         _cflags_size='-O2'
4728         _flags_filter=cparser_flags
4729     fi
4730
4731     eval ${pfx}_type=\$_type
4732     eval ${pfx}_ident=\$_ident
4733 }
4734
4735 set_ccvars(){
4736     eval ${1}_C=\${_cc_c-\${${1}_C}}
4737     eval ${1}_E=\${_cc_e-\${${1}_E}}
4738     eval ${1}_O=\${_cc_o-\${${1}_O}}
4739
4740     if [ -n "$_depflags" ]; then
4741         eval ${1}_DEPFLAGS=\$_depflags
4742     else
4743         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4744         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4745         eval DEP${1}FLAGS=\$_flags
4746     fi
4747 }
4748
4749 probe_cc cc "$cc" "true"
4750 cflags_filter=$_flags_filter
4751 cflags_speed=$_cflags_speed
4752 cflags_size=$_cflags_size
4753 cflags_noopt=$_cflags_noopt
4754 add_cflags $_flags $_cflags
4755 cc_ldflags=$_ldflags
4756 set_ccvars CC
4757 set_ccvars CXX
4758
4759 probe_cc hostcc "$host_cc"
4760 host_cflags_filter=$_flags_filter
4761 host_cflags_speed=$_cflags_speed
4762 add_host_cflags  $_flags $_cflags
4763 set_ccvars HOSTCC
4764
4765 test -n "$cc_type" && enable $cc_type ||
4766     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4767
4768 : ${as_default:=$cc}
4769 : ${objcc_default:=$cc}
4770 : ${dep_cc_default:=$cc}
4771 : ${ld_default:=$cc}
4772 : ${host_ld_default:=$host_cc}
4773 set_default ar as objcc dep_cc ld ln_s host_ld windres
4774
4775 probe_cc as "$as"
4776 asflags_filter=$_flags_filter
4777 add_asflags $_flags $_cflags
4778 set_ccvars AS
4779
4780 probe_cc objcc "$objcc"
4781 objcflags_filter=$_flags_filter
4782 add_objcflags $_flags $_cflags
4783 set_ccvars OBJC
4784
4785 probe_cc ld "$ld"
4786 ldflags_filter=$_flags_filter
4787 add_ldflags $_flags $_ldflags
4788 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4789 LD_O=${_ld_o-$LD_O}
4790 LD_LIB=${_ld_lib-$LD_LIB}
4791 LD_PATH=${_ld_path-$LD_PATH}
4792
4793 probe_cc hostld "$host_ld"
4794 host_ldflags_filter=$_flags_filter
4795 add_host_ldflags $_flags $_ldflags
4796 HOSTLD_O=${_ld_o-$HOSTLD_O}
4797
4798 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4799     probe_cc depcc "$dep_cc"
4800     CCDEP=${_DEPCMD:-$DEPCMD}
4801     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4802     DEPCCFLAGS=$_flags
4803 fi
4804
4805 if $ar 2>&1 | grep -q Microsoft; then
4806     arflags="-nologo"
4807     ar_o='-out:$@'
4808 elif $ar 2>&1 | grep -q "\[D\] "; then
4809     arflags="rcD"
4810     ar_o='$@'
4811 else
4812     arflags="rc"
4813     ar_o='$@'
4814 fi
4815
4816 add_cflags $extra_cflags
4817 add_cxxflags $extra_cxxflags
4818 add_objcflags $extra_objcflags
4819 add_asflags $extra_cflags
4820
4821 if test -n "$sysroot"; then
4822     case "$cc_type" in
4823         gcc|llvm_gcc|clang)
4824             add_cppflags --sysroot="$sysroot"
4825             add_ldflags --sysroot="$sysroot"
4826         ;;
4827     esac
4828 fi
4829
4830 if test "$cpu" = host; then
4831     enabled cross_compile &&
4832         warn "--cpu=host makes no sense when cross-compiling."
4833
4834     case "$cc_type" in
4835         gcc|llvm_gcc)
4836             check_native(){
4837                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4838                 sed -n "/cc1.*$1=/{
4839                             s/.*$1=\\([^ ]*\\).*/\\1/
4840                             p
4841                             q
4842                         }" $TMPE
4843             }
4844             cpu=$(check_native -march || check_native -mcpu)
4845         ;;
4846         clang)
4847             check_native(){
4848                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4849                 sed -n "/cc1.*-target-cpu /{
4850                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4851                             p
4852                             q
4853                         }" $TMPE
4854             }
4855             cpu=$(check_native -march)
4856         ;;
4857     esac
4858
4859     test "${cpu:-host}" = host &&
4860         die "--cpu=host not supported with compiler $cc"
4861 fi
4862
4863 # Deal with common $arch aliases
4864 case "$arch" in
4865     aarch64|arm64)
4866         arch="aarch64"
4867     ;;
4868     arm*|iPad*|iPhone*)
4869         arch="arm"
4870     ;;
4871     mips*|IP*)
4872         case "$arch" in
4873         *el)
4874             add_cppflags -EL
4875             add_ldflags -EL
4876         ;;
4877         *eb)
4878             add_cppflags -EB
4879             add_ldflags -EB
4880         ;;
4881         esac
4882         arch="mips"
4883     ;;
4884     parisc*|hppa*)
4885         arch="parisc"
4886     ;;
4887     "Power Macintosh"|ppc*|powerpc*)
4888         arch="ppc"
4889     ;;
4890     s390|s390x)
4891         arch="s390"
4892     ;;
4893     sh4|sh)
4894         arch="sh4"
4895     ;;
4896     sun4*|sparc*)
4897         arch="sparc"
4898     ;;
4899     tilegx|tile-gx)
4900         arch="tilegx"
4901     ;;
4902     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4903         arch="x86"
4904     ;;
4905 esac
4906
4907 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4908 enable $arch
4909
4910 # Add processor-specific flags
4911 if enabled aarch64; then
4912
4913     case $cpu in
4914         armv*)
4915             cpuflags="-march=$cpu"
4916         ;;
4917         *)
4918             cpuflags="-mcpu=$cpu"
4919         ;;
4920     esac
4921
4922 elif enabled alpha; then
4923
4924     cpuflags="-mcpu=$cpu"
4925
4926 elif enabled arm; then
4927
4928     check_arm_arch() {
4929         test_cpp_condition stddef.h \
4930             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4931             $cpuflags
4932     }
4933
4934     probe_arm_arch() {
4935         if   check_arm_arch 4;        then echo armv4
4936         elif check_arm_arch 4T;       then echo armv4t
4937         elif check_arm_arch 5;        then echo armv5
4938         elif check_arm_arch 5E;       then echo armv5e
4939         elif check_arm_arch 5T;       then echo armv5t
4940         elif check_arm_arch 5TE;      then echo armv5te
4941         elif check_arm_arch 5TEJ;     then echo armv5te
4942         elif check_arm_arch 6;        then echo armv6
4943         elif check_arm_arch 6J;       then echo armv6j
4944         elif check_arm_arch 6K;       then echo armv6k
4945         elif check_arm_arch 6Z;       then echo armv6z
4946         elif check_arm_arch 6KZ;      then echo armv6zk
4947         elif check_arm_arch 6ZK;      then echo armv6zk
4948         elif check_arm_arch 6T2;      then echo armv6t2
4949         elif check_arm_arch 7;        then echo armv7
4950         elif check_arm_arch 7A  7_A;  then echo armv7-a
4951         elif check_arm_arch 7S;       then echo armv7-a
4952         elif check_arm_arch 7R  7_R;  then echo armv7-r
4953         elif check_arm_arch 7M  7_M;  then echo armv7-m
4954         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4955         elif check_arm_arch 8A  8_A;  then echo armv8-a
4956         fi
4957     }
4958
4959     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4960
4961     case $cpu in
4962         armv*)
4963             cpuflags="-march=$cpu"
4964             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4965         ;;
4966         *)
4967             cpuflags="-mcpu=$cpu"
4968             case $cpu in
4969                 cortex-a*)                               subarch=armv7a  ;;
4970                 cortex-r*)                               subarch=armv7r  ;;
4971                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4972                 arm11*)                                  subarch=armv6   ;;
4973                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4974                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4975                 *)                             subarch=$(probe_arm_arch) ;;
4976             esac
4977         ;;
4978     esac
4979
4980     case "$subarch" in
4981         armv5t*)    enable fast_clz                ;;
4982         armv[6-8]*)
4983             enable fast_clz
4984             disabled fast_unaligned || enable fast_unaligned
4985             ;;
4986     esac
4987
4988 elif enabled avr32; then
4989
4990     case $cpu in
4991         ap7[02]0[0-2])
4992             subarch="avr32_ap"
4993             cpuflags="-mpart=$cpu"
4994         ;;
4995         ap)
4996             subarch="avr32_ap"
4997             cpuflags="-march=$cpu"
4998         ;;
4999         uc3[ab]*)
5000             subarch="avr32_uc"
5001             cpuflags="-mcpu=$cpu"
5002         ;;
5003         uc)
5004             subarch="avr32_uc"
5005             cpuflags="-march=$cpu"
5006         ;;
5007     esac
5008
5009 elif enabled bfin; then
5010
5011     cpuflags="-mcpu=$cpu"
5012
5013 elif enabled mips; then
5014
5015     if [ "$cpu" != "generic" ]; then
5016         disable mips32r2
5017         disable mips32r5
5018         disable mips64r2
5019         disable mips32r6
5020         disable mips64r6
5021         disable loongson2
5022         disable loongson3
5023         disable mipsdsp
5024         disable mipsdspr2
5025         disable msa
5026         disable mmi
5027
5028         cpuflags="-march=$cpu"
5029
5030         case $cpu in
5031             # General ISA levels
5032             mips1|mips3)
5033             ;;
5034             mips32r2)
5035                 enable msa
5036                 enable mips32r2
5037             ;;
5038             mips32r5)
5039                 enable msa
5040                 enable mips32r2
5041                 enable mips32r5
5042             ;;
5043             mips64r2|mips64r5)
5044                 enable msa
5045                 enable mmi
5046                 enable mips64r2
5047                 enable loongson3
5048             ;;
5049             # Cores from MIPS(MTI)
5050             24kc)
5051                 disable mipsfpu
5052                 enable mips32r2
5053             ;;
5054             24kf*|24kec|34kc|74Kc|1004kc)
5055                 enable mips32r2
5056             ;;
5057             24kef*|34kf*|1004kf*)
5058                 enable mipsdsp
5059                 enable mips32r2
5060             ;;
5061             p5600)
5062                 enable msa
5063                 enable mips32r2
5064                 enable mips32r5
5065                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5066             ;;
5067             i6400)
5068                 enable mips64r6
5069                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5070             ;;
5071             p6600)
5072                 enable mips64r6
5073                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5074             ;;
5075             # Cores from Loongson
5076             loongson2e|loongson2f|loongson3*)
5077                 enable mmi
5078                 enable local_aligned
5079                 enable simd_align_16
5080                 enable fast_64bit
5081                 enable fast_clz
5082                 enable fast_cmov
5083                 enable fast_unaligned
5084                 disable aligned_stack
5085                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5086                 if test "$cc_type" = "gcc"; then
5087                     case $gcc_basever in
5088                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5089                         expensive_optimization_flag="-fno-expensive-optimizations"
5090                         ;;
5091                         *)
5092                         expensive_optimization_flag=""
5093                         ;;
5094                     esac
5095                 fi
5096
5097                 case $cpu in
5098                     loongson3*)
5099                         enable loongson3
5100                         enable msa
5101                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5102                     ;;
5103                     loongson2e)
5104                         enable loongson2
5105                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5106                     ;;
5107                     loongson2f)
5108                         enable loongson2
5109                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5110                     ;;
5111                 esac
5112             ;;
5113             *)
5114                 warn "unknown MIPS CPU"
5115             ;;
5116         esac
5117
5118     else
5119         disable mipsdsp
5120         disable mipsdspr2
5121         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5122         warn 'generic cpu selected'
5123     fi
5124
5125 elif enabled ppc; then
5126
5127     disable ldbrx
5128
5129     case $(tolower $cpu) in
5130         601|ppc601|powerpc601)
5131             cpuflags="-mcpu=601"
5132             disable altivec
5133         ;;
5134         603*|ppc603*|powerpc603*)
5135             cpuflags="-mcpu=603"
5136             disable altivec
5137         ;;
5138         604*|ppc604*|powerpc604*)
5139             cpuflags="-mcpu=604"
5140             disable altivec
5141         ;;
5142         g3|75*|ppc75*|powerpc75*)
5143             cpuflags="-mcpu=750"
5144             disable altivec
5145         ;;
5146         g4|745*|ppc745*|powerpc745*)
5147             cpuflags="-mcpu=7450"
5148             disable vsx
5149         ;;
5150         74*|ppc74*|powerpc74*)
5151             cpuflags="-mcpu=7400"
5152             disable vsx
5153         ;;
5154         g5|970|ppc970|powerpc970)
5155             cpuflags="-mcpu=970"
5156             disable vsx
5157         ;;
5158         power[3-6]*)
5159             cpuflags="-mcpu=$cpu"
5160             disable vsx
5161         ;;
5162         power[7-8]*)
5163             cpuflags="-mcpu=$cpu"
5164         ;;
5165         cell)
5166             cpuflags="-mcpu=cell"
5167             enable ldbrx
5168             disable vsx
5169         ;;
5170         e500mc)
5171             cpuflags="-mcpu=e500mc"
5172             disable altivec
5173         ;;
5174         e500v2)
5175             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5176             disable altivec
5177             disable dcbzl
5178         ;;
5179         e500)
5180             cpuflags="-mcpu=8540 -mhard-float"
5181             disable altivec
5182             disable dcbzl
5183         ;;
5184     esac
5185
5186 elif enabled sparc; then
5187
5188     case $cpu in
5189         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5190             cpuflags="-mcpu=$cpu"
5191         ;;
5192         ultrasparc*|niagara[234])
5193             cpuflags="-mcpu=$cpu"
5194         ;;
5195     esac
5196
5197 elif enabled x86; then
5198
5199     case $cpu in
5200         i[345]86|pentium)
5201             cpuflags="-march=$cpu"
5202             disable i686
5203             disable mmx
5204         ;;
5205         # targets that do NOT support nopl and conditional mov (cmov)
5206         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5207             cpuflags="-march=$cpu"
5208             disable i686
5209         ;;
5210         # targets that do support nopl and conditional mov (cmov)
5211         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5212         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5213         |amdfam10|barcelona|b[dt]ver*|znver*)
5214             cpuflags="-march=$cpu"
5215             enable i686
5216             enable fast_cmov
5217         ;;
5218         # targets that do support conditional mov but on which it's slow
5219         pentium4|pentium4m|prescott|nocona)
5220             cpuflags="-march=$cpu"
5221             enable i686
5222             disable fast_cmov
5223         ;;
5224     esac
5225
5226 fi
5227
5228 if [ "$cpu" != generic ]; then
5229     add_cflags  $cpuflags
5230     add_asflags $cpuflags
5231     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5232 fi
5233
5234 # compiler sanity check
5235 test_exec <<EOF
5236 int main(void){ return 0; }
5237 EOF
5238 if test "$?" != 0; then
5239     echo "$cc is unable to create an executable file."
5240     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5241         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5242         echo "Only do this if you know what cross compiling means."
5243     fi
5244     die "C compiler test failed."
5245 fi
5246
5247 add_cppflags -D_ISOC99_SOURCE
5248 add_cxxflags -D__STDC_CONSTANT_MACROS
5249 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5250
5251 # some compilers silently accept -std=c11, so we also need to check that the
5252 # version macro is defined properly
5253 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5254     add_cflags -std=c11 ||
5255     check_cflags -std=c99
5256
5257 check_cppflags -D_FILE_OFFSET_BITS=64
5258 check_cppflags -D_LARGEFILE_SOURCE
5259
5260 add_host_cppflags -D_ISOC99_SOURCE
5261 check_host_cflags -std=c99
5262 check_host_cflags -Wall
5263 check_host_cflags $host_cflags_speed
5264
5265 check_64bit(){
5266     arch32=$1
5267     arch64=$2
5268     expr=${3:-'sizeof(void *) > 4'}
5269     test_code cc "" "int test[2*($expr) - 1]" &&
5270         subarch=$arch64 || subarch=$arch32
5271     enable $subarch
5272 }
5273
5274 case "$arch" in
5275     aarch64|alpha|ia64)
5276         enabled shared && enable_weak pic
5277     ;;
5278     mips)
5279         check_64bit mips mips64 '_MIPS_SIM > 1'
5280         enabled shared && enable_weak pic
5281     ;;
5282     parisc)
5283         check_64bit parisc parisc64
5284         enabled shared && enable_weak pic
5285     ;;
5286     ppc)
5287         check_64bit ppc ppc64
5288         enabled shared && enable_weak pic
5289     ;;
5290     s390)
5291         check_64bit s390 s390x
5292         enabled shared && enable_weak pic
5293     ;;
5294     sparc)
5295         check_64bit sparc sparc64
5296         enabled shared && enable_weak pic
5297     ;;
5298     x86)
5299         check_64bit x86_32 x86_64
5300         # Treat x32 as x64 for now. Note it also needs pic if shared
5301         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5302             subarch=x86_64 && enable x86_64 && disable x86_32
5303         if enabled x86_64; then
5304             enabled shared && enable_weak pic
5305             objformat=elf64
5306         fi
5307     ;;
5308 esac
5309
5310 # OS specific
5311 case $target_os in
5312     aix)
5313         SHFLAGS=-shared
5314         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5315         enabled shared && add_ldflags -Wl,-brtl
5316         arflags='-Xany -r -c'
5317         striptype=""
5318         ;;
5319     android)
5320         disable symver
5321         enable section_data_rel_ro
5322         add_cflags -fPIE
5323         add_ldexeflags -fPIE -pie
5324         SLIB_INSTALL_NAME='$(SLIBNAME)'
5325         SLIB_INSTALL_LINKS=
5326         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5327         ;;
5328     haiku)
5329         prefix_default="/boot/common"
5330         network_extralibs="-lnetwork"
5331         host_extralibs=
5332         ;;
5333     sunos)
5334         SHFLAGS='-shared -Wl,-h,$$(@F)'
5335         enabled x86 && append SHFLAGS -mimpure-text
5336         network_extralibs="-lsocket -lnsl"
5337         add_cppflags -D__EXTENSIONS__
5338         # When using suncc to build, the Solaris linker will mark
5339         # an executable with each instruction set encountered by
5340         # the Solaris assembler.  As our libraries contain their own
5341         # guards for processor-specific code, instead suppress
5342         # generation of the HWCAPS ELF section on Solaris x86 only.
5343         enabled_all suncc x86 &&
5344             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5345             add_ldflags -Wl,-M,mapfile
5346         nm_default='nm -P -g'
5347         striptype=""
5348         version_script='-M'
5349         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5350         ;;
5351     netbsd)
5352         disable symver
5353         oss_indev_extralibs="-lossaudio"
5354         oss_outdev_extralibs="-lossaudio"
5355         enabled gcc || check_ldflags -Wl,-zmuldefs
5356         ;;
5357     openbsd|bitrig)
5358         disable symver
5359         enable section_data_rel_ro
5360         striptype=""
5361         SHFLAGS='-shared'
5362         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5363         SLIB_INSTALL_LINKS=
5364         oss_indev_extralibs="-lossaudio"
5365         oss_outdev_extralibs="-lossaudio"
5366         ;;
5367     dragonfly)
5368         disable symver
5369         ;;
5370     freebsd)
5371         ;;
5372     bsd/os)
5373         add_extralibs -lpoll -lgnugetopt
5374         strip="strip -d"
5375         ;;
5376     darwin)
5377         enabled ppc && add_asflags -force_cpusubtype_ALL
5378         install_name_dir_default='$(SHLIBDIR)'
5379         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5380         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5381         strip="${strip} -x"
5382         add_ldflags -Wl,-dynamic,-search_paths_first
5383         check_cflags -Werror=partial-availability
5384         SLIBSUF=".dylib"
5385         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5386         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5387         enabled x86_64 && objformat="macho64" || objformat="macho32"
5388         enabled_any pic shared x86_64 ||
5389             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5390         check_headers dispatch/dispatch.h &&
5391             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5392         if test -n "$sysroot"; then
5393             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5394             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5395         fi
5396         version_script='-exported_symbols_list'
5397         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5398         # Workaround for Xcode 11 -fstack-check bug
5399         if enabled clang; then
5400             clang_version=$($cc -dumpversion)
5401             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5402         fi
5403         ;;
5404     msys*)
5405         die "Native MSYS builds are discouraged, please use the MINGW environment."
5406         ;;
5407     mingw32*|mingw64*)
5408         target_os=mingw32
5409         LIBTARGET=i386
5410         if enabled x86_64; then
5411             LIBTARGET="i386:x86-64"
5412         elif enabled arm; then
5413             LIBTARGET="arm"
5414         elif enabled aarch64; then
5415             LIBTARGET="arm64"
5416         fi
5417         if enabled shared; then
5418             # Cannot build both shared and static libs when using dllimport.
5419             disable static
5420         fi
5421         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5422         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5423         shlibdir_default="$bindir_default"
5424         SLIBPREF=""
5425         SLIBSUF=".dll"
5426         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5427         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5428         if test_cmd lib.exe -list; then
5429             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5430             if enabled x86_64; then
5431                 LIBTARGET=x64
5432             fi
5433         else
5434             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5435         fi
5436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5437         SLIB_INSTALL_LINKS=
5438         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5439         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5440         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5441         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5442         enabled x86_64 && objformat="win64" || objformat="win32"
5443         dlltool="${cross_prefix}dlltool"
5444         ranlib=:
5445         enable dos_paths
5446         check_ldflags -Wl,--nxcompat,--dynamicbase
5447         # Lets work around some stupidity in binutils.
5448         # ld will strip relocations from executables even though we need them
5449         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5450         # however ld then forgets what the entry point should be (oops) so we
5451         # have to manually (re)set it.
5452         if enabled x86_32; then
5453             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5454         elif enabled x86_64; then
5455             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5456             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5457             # Set image base >4GB for extra entropy with HEASLR
5458             add_ldexeflags -Wl,--image-base,0x140000000
5459             append SHFLAGS -Wl,--image-base,0x180000000
5460         fi
5461         ;;
5462     win32|win64)
5463         disable symver
5464         if enabled shared; then
5465             # Link to the import library instead of the normal static library
5466             # for shared libs.
5467             LD_LIB='%.lib'
5468             # Cannot build both shared and static libs with MSVC or icl.
5469             disable static
5470         fi
5471         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5472         shlibdir_default="$bindir_default"
5473         SLIBPREF=""
5474         SLIBSUF=".dll"
5475         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5476         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5477         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5478         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5479         SLIB_INSTALL_LINKS=
5480         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5481         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5482         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5483         enabled x86_64 && objformat="win64" || objformat="win32"
5484         ranlib=:
5485         enable dos_paths
5486         ;;
5487     cygwin*)
5488         target_os=cygwin
5489         shlibdir_default="$bindir_default"
5490         SLIBPREF="cyg"
5491         SLIBSUF=".dll"
5492         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5493         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5494         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5495         SLIB_INSTALL_LINKS=
5496         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5497         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5498         enabled x86_64 && objformat="win64" || objformat="win32"
5499         enable dos_paths
5500         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5501         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5502         ;;
5503     *-dos|freedos|opendos)
5504         network_extralibs="-lsocket"
5505         objformat="coff"
5506         enable dos_paths
5507         ;;
5508     linux)
5509         enable section_data_rel_ro
5510         enabled_any arm aarch64 && enable_weak linux_perf
5511         ;;
5512     irix*)
5513         target_os=irix
5514         ranlib="echo ignoring ranlib"
5515         ;;
5516     os/2*)
5517         strip="lxlite -CS"
5518         striptype=""
5519         objformat="aout"
5520         add_cppflags -D_GNU_SOURCE
5521         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5522         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5523         LIBSUF="_s.a"
5524         SLIBPREF=""
5525         SLIBSUF=".dll"
5526         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5527         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5528         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5529             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5530             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5531             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5532             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5533         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5534             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5535         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5536         SLIB_INSTALL_LINKS=
5537         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5538         enable dos_paths
5539         enable_weak os2threads
5540         ;;
5541     gnu/kfreebsd)
5542         add_cppflags -D_BSD_SOURCE
5543         ;;
5544     gnu)
5545         ;;
5546     qnx)
5547         add_cppflags -D_QNX_SOURCE
5548         network_extralibs="-lsocket"
5549         ;;
5550     symbian)
5551         SLIBSUF=".dll"
5552         enable dos_paths
5553         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5554         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5555         add_ldflags -Wl,--target1-abs,--no-undefined \
5556                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5557                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5558         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5559                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5560                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5561         ;;
5562     minix)
5563         ;;
5564     none)
5565         ;;
5566     *)
5567         die "Unknown OS '$target_os'."
5568         ;;
5569 esac
5570
5571 # test if creating links works
5572 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5573 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5574 mkdir "$link_dest"
5575 $ln_s "$link_dest" "$link_name"
5576 touch "$link_dest/test_file"
5577 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5578     # create link to source path
5579     [ -e src ] && rm src
5580     $ln_s "$source_path" src
5581     source_link=src
5582 else
5583     # creating directory links doesn't work
5584     # fall back to using the full source path
5585     source_link="$source_path"
5586 fi
5587 # cleanup
5588 rm -r "$link_dest"
5589 rm -r "$link_name"
5590
5591 # determine libc flavour
5592
5593 probe_libc(){
5594     pfx=$1
5595     pfx_no_=${pfx%_}
5596     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5597     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5598         eval ${pfx}libc_type=uclibc
5599         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5600     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5601         eval ${pfx}libc_type=glibc
5602         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5603     # MinGW headers can be installed on Cygwin, so check for newlib first.
5604     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5605         eval ${pfx}libc_type=newlib
5606         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5607     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5608     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5609         eval ${pfx}libc_type=mingw64
5610         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5611             add_compat msvcrt/snprintf.o
5612             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5613         fi
5614         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5615         eval test \$${pfx_no_}cc_type = "gcc" &&
5616             add_${pfx}cppflags -D__printf__=__gnu_printf__
5617         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5618             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5619         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5620     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5621          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5622         eval ${pfx}libc_type=mingw32
5623         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5624             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5625             die "ERROR: MinGW32 runtime version must be >= 3.15."
5626         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5627         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5628             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5629         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5630             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5631         eval test \$${pfx_no_}cc_type = "gcc" &&
5632             add_${pfx}cppflags -D__printf__=__gnu_printf__
5633         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5634     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5635         eval ${pfx}libc_type=msvcrt
5636         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5637             if [ "$pfx" = host_ ]; then
5638                 add_host_cppflags -Dsnprintf=_snprintf
5639             else
5640                 add_compat strtod.o strtod=avpriv_strtod
5641                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5642                                              _snprintf=avpriv_snprintf  \
5643                                              vsnprintf=avpriv_vsnprintf
5644             fi
5645         fi
5646         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5647         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5648         # 0x601 by default unless something else is set by the user.
5649         # This can easily lead to us detecting functions only present
5650         # in such new versions and producing binaries requiring windows 7.0.
5651         # Therefore explicitly set the default to Vista unless the user has
5652         # set something else on the command line.
5653         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5654         # family. For these cases, configure is free to use any functions
5655         # found in the SDK headers by default. (Alternatively, we could force
5656         # _WIN32_WINNT to 0x0602 in that case.)
5657         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5658             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5659 #ifdef WINAPI_FAMILY
5660 #include <winapifamily.h>
5661 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5662 #error not desktop
5663 #endif
5664 #endif
5665 EOF
5666         if [ "$pfx" = "" ]; then
5667             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5668             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5669         fi
5670     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5671         eval ${pfx}libc_type=klibc
5672     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5673         eval ${pfx}libc_type=bionic
5674     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5675         eval ${pfx}libc_type=solaris
5676         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5677     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5678         eval ${pfx}libc_type=djgpp
5679         add_cppflags -U__STRICT_ANSI__
5680         add_cflags "-include $source_path/compat/djgpp/math.h"
5681         add_compat djgpp/math.o
5682     fi
5683     test_${pfx}cc <<EOF
5684 #include <time.h>
5685 void *v = localtime_r;
5686 EOF
5687 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5688 #include <time.h>
5689 void *v = localtime_r;
5690 EOF
5691
5692     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5693 }
5694
5695 probe_libc
5696 probe_libc host_
5697
5698 # hacks for compiler/libc/os combinations
5699
5700 case $libc_type in
5701     bionic)
5702         add_compat strtod.o strtod=avpriv_strtod
5703         ;;
5704 esac
5705
5706 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5707     add_cppflags '-I\$(SRC_PATH)/compat/float'
5708
5709 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5710
5711 set_default libdir
5712 : ${shlibdir_default:="$libdir"}
5713 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5714
5715 set_default $PATHS_LIST
5716 set_default nm
5717
5718 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5719
5720 enable_weak_pic() {
5721     disabled pic && return
5722     enable pic
5723     add_cppflags -DPIC
5724     case "$target_os" in
5725     mingw*|cygwin*|win*)
5726         ;;
5727     *)
5728         add_cflags -fPIC
5729         add_asflags -fPIC
5730         ;;
5731     esac
5732 }
5733
5734 enabled pic && enable_weak_pic
5735
5736 test_cc <<EOF || die "Symbol mangling check failed."
5737 int ff_extern;
5738 EOF
5739 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5740 extern_prefix=${sym%%ff_extern*}
5741
5742 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5743
5744 for restrict_keyword in restrict __restrict__ __restrict ""; do
5745     test_code cc "" "char * $restrict_keyword p" && break
5746 done
5747
5748 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5749
5750 # The global variable ensures the bits appear unchanged in the object file.
5751 test_cc <<EOF || die "endian test failed"
5752 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5753 EOF
5754 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5755
5756 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5757
5758 if ! enabled ppc64 || enabled bigendian; then
5759     disable vsx
5760 fi
5761
5762 check_gas() {
5763     log "check_gas using '$as' as AS"
5764     # :vararg is used on aarch64, arm and ppc altivec
5765     check_as vararg "
5766 .macro m n, y:vararg=0
5767 \n: .int \y
5768 .endm
5769 m x" || return 1
5770     # .altmacro is only used in arm asm
5771     ! enabled arm || check_as gnu_as ".altmacro"
5772 }
5773
5774 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5775     nogas=:
5776     enabled_any arm aarch64 && nogas=die
5777     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5778     as_noop=-v
5779
5780     case $as_type in
5781         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5782         gcc)  gaspp_as_type=gas ;;
5783         *)    gaspp_as_type=$as_type ;;
5784     esac
5785
5786     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5787
5788     test "${as#*gas-preprocessor.pl}" != "$as" ||
5789     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5790         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5791
5792     if ! check_gas ; then
5793         as=${gas:=$as}
5794         check_gas || \
5795             $nogas "GNU assembler not found, install/update gas-preprocessor"
5796     fi
5797
5798     check_as as_func ".func test
5799                       .endfunc"
5800 fi
5801
5802 check_inline_asm inline_asm_labels '"1:\n"'
5803
5804 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5805
5806 if enabled aarch64; then
5807     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5808     # internal assembler in clang 3.3 does not support this instruction
5809     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5810     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5811
5812     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5813
5814 elif enabled alpha; then
5815
5816     check_cflags -mieee
5817
5818 elif enabled arm; then
5819
5820     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5821     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5822 float func(float a, float b){ return a+b; }
5823 EOF
5824     enabled thumb && check_cflags -mthumb || check_cflags -marm
5825
5826     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5827         :
5828     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5829         :
5830     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5831         case "${cross_prefix:-$cc}" in
5832             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5833             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5834 __asm__ (".eabi_attribute 28, 1");
5835 int main(void) { return 0; }
5836 EOF
5837         esac
5838         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5839     fi
5840
5841     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5842     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5843     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5844     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5845     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5846     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5847     enabled setend  && check_insn setend  'setend be'
5848
5849     [ $target_os = linux ] || [ $target_os = android ] ||
5850         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5851             $ARCH_EXT_LIST_ARM
5852
5853     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5854
5855     check_as as_arch_directive ".arch armv7-a"
5856     check_as as_dn_directive   "ra .dn d0.i16"
5857     check_as as_fpu_directive  ".fpu neon"
5858
5859     # llvm's integrated assembler supports .object_arch from llvm 3.5
5860     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5861         check_as as_object_arch ".object_arch armv4"
5862
5863     # MS armasm fails to assemble our PIC constructs
5864     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5865
5866 elif enabled mips; then
5867
5868     # Check toolchain ISA level
5869     if enabled mips64; then
5870         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5871             disable mips64r2
5872
5873         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5874
5875         disable mips32r6 && disable mips32r5 && disable mips32r2
5876     else
5877         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5878             disable mips32r5 && disable mips32r2
5879
5880         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5881         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5882
5883         disable mips64r6 && disable mips64r5 && disable mips64r2
5884     fi
5885
5886     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5887     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5888
5889     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5890     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5891
5892     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5893     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5894     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5895
5896     # loongson2 have no switch cflag so we can only probe toolchain ability
5897     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5898
5899     # loongson3 is paired with MMI
5900     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5901
5902     # MMI can be detected at runtime too
5903     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5904
5905     if enabled bigendian && enabled msa; then
5906         disable msa
5907     fi
5908
5909 elif enabled parisc; then
5910
5911     if enabled gcc; then
5912         case $($cc -dumpversion) in
5913             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5914         esac
5915     fi
5916
5917 elif enabled ppc; then
5918
5919     enable local_aligned
5920
5921     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5922     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5923     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5924     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5925
5926     if enabled altivec; then
5927         check_cflags -maltivec -mabi=altivec
5928
5929         # check if our compiler supports Motorola AltiVec C API
5930         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5931                                     vector signed int v2 = (vector signed int) { 1 };
5932                                     v1 = vec_add(v1, v2);"
5933
5934         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5935     fi
5936
5937     if enabled vsx; then
5938         check_cflags -mvsx &&
5939         check_cc vsx altivec.h "int v[4] = { 0 };
5940                                 vector signed int v1 = vec_vsx_ld(0, v);"
5941     fi
5942
5943     if enabled power8; then
5944         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5945     fi
5946
5947 elif enabled x86; then
5948
5949     check_builtin rdtsc    intrin.h   "__rdtsc()"
5950     check_builtin mm_empty mmintrin.h "_mm_empty()"
5951
5952     enable local_aligned
5953
5954     # check whether EBP is available on x86
5955     # As 'i' is stored on the stack, this program will crash
5956     # if the base pointer is used to access it because the
5957     # base pointer is cleared in the inline assembly code.
5958     check_exec_crash <<EOF && enable ebp_available
5959 volatile int i=0;
5960 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5961 return i;
5962 EOF
5963
5964     # check whether EBX is available on x86
5965     check_inline_asm ebx_available '""::"b"(0)' &&
5966         check_inline_asm ebx_available '"":::"%ebx"'
5967
5968     # check whether xmm clobbers are supported
5969     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5970
5971     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5972         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5973
5974     # check whether binutils is new enough to compile SSSE3/MMXEXT
5975     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5976     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5977
5978     probe_x86asm(){
5979         x86asmexe_probe=$1
5980         if test_cmd $x86asmexe_probe -v; then
5981             x86asmexe=$x86asmexe_probe
5982             x86asm_type=nasm
5983             x86asm_debug="-g -F dwarf"
5984             X86ASMDEP=
5985             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5986         elif test_cmd $x86asmexe_probe --version; then
5987             x86asmexe=$x86asmexe_probe
5988             x86asm_type=yasm
5989             x86asm_debug="-g dwarf2"
5990             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5991             X86ASM_DEPFLAGS=
5992         fi
5993         check_x86asm x86asm "movbe ecx, [5]"
5994     }
5995
5996     if ! disabled_any asm mmx x86asm; then
5997         disable x86asm
5998         for program in $x86asmexe nasm yasm; do
5999             probe_x86asm $program && break
6000         done
6001         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6002         X86ASMFLAGS="-f $objformat"
6003         enabled pic               && append X86ASMFLAGS "-DPIC"
6004         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6005         case "$objformat" in
6006             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6007         esac
6008
6009         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6010         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6011         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6012         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6013         check_x86asm cpunop          "CPU amdnop"
6014     fi
6015
6016     case "$cpu" in
6017         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6018             disable fast_clz
6019         ;;
6020     esac
6021
6022 fi
6023
6024 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6025
6026 check_ldflags -Wl,--as-needed
6027 check_ldflags -Wl,-z,noexecstack
6028
6029 if ! disabled network; then
6030     check_func getaddrinfo $network_extralibs
6031     check_func inet_aton $network_extralibs
6032
6033     check_type netdb.h "struct addrinfo"
6034     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6035     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6036     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6037     check_type poll.h "struct pollfd"
6038     check_type netinet/sctp.h "struct sctp_event_subscribe"
6039     check_struct "sys/socket.h" "struct msghdr" msg_flags
6040     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6041     check_type netinet/in.h "struct sockaddr_in6"
6042     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6043     check_type "sys/types.h sys/socket.h" socklen_t
6044
6045     # Prefer arpa/inet.h over winsock2
6046     if check_headers arpa/inet.h ; then
6047         check_func closesocket
6048     elif check_headers winsock2.h ; then
6049         check_func_headers winsock2.h closesocket -lws2 &&
6050             network_extralibs="-lws2" ||
6051         { check_func_headers winsock2.h closesocket -lws2_32 &&
6052             network_extralibs="-lws2_32"; } || disable winsock2_h network
6053         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6054
6055         check_type ws2tcpip.h socklen_t
6056         check_type ws2tcpip.h "struct addrinfo"
6057         check_type ws2tcpip.h "struct group_source_req"
6058         check_type ws2tcpip.h "struct ip_mreq_source"
6059         check_type ws2tcpip.h "struct ipv6_mreq"
6060         check_type winsock2.h "struct pollfd"
6061         check_struct winsock2.h "struct sockaddr" sa_len
6062         check_type ws2tcpip.h "struct sockaddr_in6"
6063         check_type ws2tcpip.h "struct sockaddr_storage"
6064     else
6065         disable network
6066     fi
6067 fi
6068
6069 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6070 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6071 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6072 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6073 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6074 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6075 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6076
6077 case "$custom_allocator" in
6078     jemalloc)
6079         # jemalloc by default does not use a prefix
6080         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6081     ;;
6082     tcmalloc)
6083         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6084         malloc_prefix=tc_
6085     ;;
6086 esac
6087
6088 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6089 check_func  ${malloc_prefix}memalign            && enable memalign
6090 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6091
6092 check_func  access
6093 check_func_headers stdlib.h arc4random
6094 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6095 check_func  fcntl
6096 check_func  fork
6097 check_func  gethrtime
6098 check_func  getopt
6099 check_func  getrusage
6100 check_func  gettimeofday
6101 check_func  isatty
6102 check_func  mkstemp
6103 check_func  mmap
6104 check_func  mprotect
6105 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6106 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6107 check_func  sched_getaffinity
6108 check_func  setrlimit
6109 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6110 check_func  strerror_r
6111 check_func  sysconf
6112 check_func  sysctl
6113 check_func  usleep
6114
6115 check_func_headers conio.h kbhit
6116 check_func_headers io.h setmode
6117 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6118 check_func_headers mach/mach_time.h mach_absolute_time
6119 check_func_headers stdlib.h getenv
6120 check_func_headers sys/stat.h lstat
6121
6122 check_func_headers windows.h GetModuleHandle
6123 check_func_headers windows.h GetProcessAffinityMask
6124 check_func_headers windows.h GetProcessTimes
6125 check_func_headers windows.h GetStdHandle
6126 check_func_headers windows.h GetSystemTimeAsFileTime
6127 check_func_headers windows.h LoadLibrary
6128 check_func_headers windows.h MapViewOfFile
6129 check_func_headers windows.h PeekNamedPipe
6130 check_func_headers windows.h SetConsoleTextAttribute
6131 check_func_headers windows.h SetConsoleCtrlHandler
6132 check_func_headers windows.h SetDllDirectory
6133 check_func_headers windows.h Sleep
6134 check_func_headers windows.h VirtualAlloc
6135 check_func_headers glob.h glob
6136 enabled xlib &&
6137     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6138
6139 check_headers direct.h
6140 check_headers dirent.h
6141 check_headers dxgidebug.h
6142 check_headers dxva.h
6143 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6144 check_headers io.h
6145 check_headers linux/perf_event.h
6146 check_headers libcrystalhd/libcrystalhd_if.h
6147 check_headers malloc.h
6148 check_headers mftransform.h
6149 check_headers net/udplite.h
6150 check_headers poll.h
6151 check_headers sys/param.h
6152 check_headers sys/resource.h
6153 check_headers sys/select.h
6154 check_headers sys/time.h
6155 check_headers sys/un.h
6156 check_headers termios.h
6157 check_headers unistd.h
6158 check_headers valgrind/valgrind.h
6159 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6160 check_headers windows.h
6161 check_headers X11/extensions/XvMClib.h
6162 check_headers asm/types.h
6163
6164 # it seems there are versions of clang in some distros that try to use the
6165 # gcc headers, which explodes for stdatomic
6166 # so we also check that atomics actually work here
6167 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6168
6169 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6170 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6171     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6172 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6173 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6174 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6175
6176 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6177 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6178 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6179
6180 enabled appkit       && check_apple_framework AppKit
6181 enabled audiotoolbox && check_apple_framework AudioToolbox
6182 enabled avfoundation && check_apple_framework AVFoundation
6183 enabled coreimage    && check_apple_framework CoreImage
6184 enabled videotoolbox && check_apple_framework VideoToolbox
6185
6186 check_apple_framework CoreFoundation
6187 check_apple_framework CoreMedia
6188 check_apple_framework CoreVideo
6189 check_apple_framework CoreAudio
6190
6191 enabled avfoundation && {
6192     disable coregraphics applicationservices
6193     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6194     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6195
6196 enabled videotoolbox && {
6197     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6198     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6199     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6200     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6201     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6202     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6203 }
6204
6205 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6206
6207 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6208 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6209 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6210 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6211 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6212 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6213
6214 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6215 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6216
6217 if [ -z "$nvccflags" ]; then
6218     nvccflags=$nvccflags_default
6219 fi
6220
6221 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6222     nvccflags="$nvccflags -m64"
6223 else
6224     nvccflags="$nvccflags -m32"
6225 fi
6226
6227 if enabled cuda_nvcc; then
6228     nvccflags="$nvccflags -ptx"
6229 else
6230     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6231     check_nvcc cuda_llvm
6232 fi
6233
6234 if ! disabled ffnvcodec; then
6235     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6236     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6237       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6238       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6239       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6240 fi
6241
6242 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6243
6244 if ! disabled w32threads && ! enabled pthreads; then
6245     check_func_headers "windows.h process.h" _beginthreadex &&
6246         check_type "windows.h" CONDITION_VARIABLE &&
6247         check_type "windows.h" INIT_ONCE &&
6248         enable w32threads || disable w32threads
6249     if ! enabled w32threads && enabled winrt; then
6250         check_func_headers "windows.h" CreateThread &&
6251             enable w32threads || disable w32threads
6252     fi
6253 fi
6254
6255 # check for some common methods of building with pthread support
6256 # do this before the optional library checks as some of them require pthreads
6257 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6258     if check_lib pthreads pthread.h pthread_join   -pthread &&
6259        check_lib pthreads pthread.h pthread_create -pthread; then
6260         add_cflags -pthread
6261     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6262          check_lib pthreads pthread.h pthread_create -pthreads; then
6263         add_cflags -pthreads
6264     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6265          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6266         add_cflags -ldl -pthread
6267     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6268          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6269         :
6270     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6271          check_lib pthreads pthread.h pthread_create -lpthread; then
6272         :
6273     elif check_func pthread_join && check_func pthread_create; then
6274         enable pthreads
6275     fi
6276     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6277
6278     if enabled pthreads; then
6279         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6280         check_func pthread_cancel $pthreads_extralibs
6281     fi
6282 fi
6283
6284 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6285                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6286 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6287 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6288
6289 # On some systems dynamic loading requires no extra linker flags
6290 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6291
6292 check_lib libm math.h sin -lm
6293
6294 atan2f_args=2
6295 copysign_args=2
6296 hypot_args=2
6297 ldexpf_args=2
6298 powf_args=2
6299
6300 for func in $MATH_FUNCS; do
6301     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6302 done
6303
6304 for func in $COMPLEX_FUNCS; do
6305     eval check_complexfunc $func \${${func}_args:-1}
6306 done
6307
6308 # these are off by default, so fail if requested and not available
6309 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6310 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6311 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6312 enabled decklink          && { require_headers DeckLinkAPI.h &&
6313                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6314 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6315 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6316 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6317 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6318 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6319 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6320 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6321                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6322                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6323 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6324 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6325 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6326 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6327 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6328 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6329                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6330                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6331 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6332 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6333 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6334 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6335 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6336 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6337 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6338                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6339                                  warn "using libfdk without pkg-config"; } }
6340 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"
6341 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6342 enabled fontconfig        && enable libfontconfig
6343 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6344 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6345 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6346 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6347 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6348                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6349 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6350                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6351                                done || die "ERROR: libgsm not found"; }
6352 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6353 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6354 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6355 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6356 # While it may appear that require is being used as a pkg-config
6357 # fallback for libmfx, it is actually being used to detect a different
6358 # installation route altogether.  If libmfx is installed via the Intel
6359 # Media SDK or Intel Media Server Studio, these don't come with
6360 # pkg-config support.  Instead, users should make sure that the build
6361 # can find the libraries and headers through other means.
6362 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6363                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6364 if enabled libmfx; then
6365    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6366 fi
6367
6368 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6369 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6370 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6371                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6372 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6373                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6374                                die "ERROR: libnpp not found"; }
6375 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6376 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6377 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6378                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6379                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6380                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6381 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6382 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6383                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6384 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6385 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6386 enabled libopus           && {
6387     enabled libopus_decoder && {
6388         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6389     }
6390     enabled libopus_encoder && {
6391         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6392     }
6393 }
6394 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6395 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6396 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6397 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6398 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6399 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6400 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6401 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6402                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6403 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6404 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6405 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6406 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6407 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6408 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6409 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6410 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6411 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6412 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6413 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6414                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6415                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6416 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6417 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6418 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6419 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6420 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6421                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6422
6423 enabled libvpx            && {
6424     enabled libvpx_vp8_decoder && {
6425         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6426             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6427     }
6428     enabled libvpx_vp8_encoder && {
6429         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6430             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6431     }
6432     enabled libvpx_vp9_decoder && {
6433         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6434             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6435     }
6436     enabled libvpx_vp9_encoder && {
6437         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6438             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6439     }
6440     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6441         die "libvpx enabled but no supported decoders found"
6442     fi
6443 }
6444
6445 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6446 enabled libwebp           && {
6447     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6448     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6449 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6450                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6451                                  warn "using libx264 without pkg-config"; } } &&
6452                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6453                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6454 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6455                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6456 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6457 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6458 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6459 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6460 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6461 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6462                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6463                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6464 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6465 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6466                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6467                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6468                                die "ERROR: mbedTLS not found"; }
6469 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6470 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6471                                { ! enabled cross_compile &&
6472                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6473                                  add_ldflags -L/opt/vc/lib/ &&
6474                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6475                                die "ERROR: mmal not found" &&
6476                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6477 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6478                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6479                                die "ERROR: openal not found"; } &&
6480                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6481                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6482 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6483                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6484                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6485                                die "ERROR: opencl not found"; } &&
6486                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6487                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6488                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6489 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6490                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6491                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6492                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6493                                die "ERROR: opengl not found."
6494                              }
6495 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6496                                { ! enabled cross_compile &&
6497                                  add_cflags -isystem/opt/vc/include/IL &&
6498                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6499                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6500                              enable omx
6501 enabled omx               && require_headers OMX_Core.h
6502 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6503                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6504                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6505                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6506                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6507                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6508                                die "ERROR: openssl not found"; }
6509 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6510 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6511                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6512                                { enabled libdrm ||
6513                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6514                              }
6515 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6516
6517
6518 if enabled gcrypt; then
6519     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6520     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6521         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6522         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6523         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6524             die "ERROR: gcrypt not found"
6525         add_cflags $gcrypt_cflags
6526     else
6527         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6528     fi
6529 fi
6530
6531 if enabled sdl2; then
6532     SDL2_CONFIG="${cross_prefix}sdl2-config"
6533     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6534     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6535         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6536         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6537         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6538         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6539         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6540             enable sdl2
6541     fi
6542     if test $target_os = "mingw32"; then
6543         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6544     fi
6545 fi
6546
6547 if enabled decklink; then
6548     case $target_os in
6549         mingw32*|mingw64*|win32|win64)
6550             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6551             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6552             ;;
6553     esac
6554 fi
6555
6556 enabled securetransport &&
6557     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6558     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6559         disable securetransport
6560
6561 enabled securetransport &&
6562     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6563
6564 enabled schannel &&
6565     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6566     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6567     schannel_extralibs="-lsecur32" ||
6568         disable schannel
6569
6570 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6571 enabled makeinfo \
6572     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6573     && enable makeinfo_html || disable makeinfo_html
6574 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6575 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6576 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6577 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6578
6579 # check V4L2 codecs available in the API
6580 if enabled v4l2_m2m; then
6581     check_headers linux/fb.h
6582     check_headers linux/videodev2.h
6583     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6584     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6585     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6586     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6587     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6588     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6589     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6590     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6591     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6592     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6593     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6594 fi
6595
6596 check_headers sys/videoio.h
6597 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6598
6599 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6600 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6601 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6602 # w32api 3.12 had it defined wrong
6603 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6604
6605 check_type "dshow.h" IBaseFilter
6606
6607 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6608 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6609     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6610     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6611     check_headers "dev/ic/bt8xx.h"
6612
6613 if check_struct sys/soundcard.h audio_buf_info bytes; then
6614     enable_sanitized sys/soundcard.h
6615 else
6616     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6617     #include <sys/soundcard.h>
6618     audio_buf_info abc;
6619 EOF
6620 fi
6621
6622 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6623                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6624
6625 enabled libjack &&
6626     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6627
6628 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6629
6630 if enabled libcdio; then
6631     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6632     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6633     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6634     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6635     die "ERROR: No usable libcdio/cdparanoia found"
6636 fi
6637
6638 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6639     disable libxcb_shm libxcb_shape libxcb_xfixes
6640
6641 if enabled libxcb; then
6642     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6643     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6644     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6645 fi
6646
6647 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6648
6649 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6650 # the desktop api partition
6651 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6652 #ifdef WINAPI_FAMILY
6653 #include <winapifamily.h>
6654 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6655 #error desktop, not uwp
6656 #else
6657 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6658 #endif
6659 #else
6660 #error no family set
6661 #endif
6662 EOF
6663
6664 enabled libdrm &&
6665     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6666
6667 enabled vaapi &&
6668     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6669
6670 if enabled vaapi; then
6671     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6672
6673     if enabled xlib; then
6674         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6675     fi
6676
6677     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6678
6679     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6680     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6681     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6682     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6683     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6684     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6685     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6686     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6687 fi
6688
6689 if enabled_all opencl libdrm ; then
6690     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6691         enable opencl_drm_beignet
6692     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6693         enable opencl_drm_arm
6694 fi
6695
6696 if enabled_all opencl vaapi ; then
6697     if enabled opencl_drm_beignet ; then
6698         enable opencl_vaapi_beignet
6699     else
6700         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6701             enable opencl_vaapi_intel_media
6702     fi
6703 fi
6704
6705 if enabled_all opencl dxva2 ; then
6706     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6707         enable opencl_dxva2
6708 fi
6709
6710 if enabled_all opencl d3d11va ; then
6711     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6712         enable opencl_d3d11
6713 fi
6714
6715 enabled vdpau &&
6716     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6717
6718 enabled vdpau &&
6719     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6720
6721 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6722
6723 enabled vulkan &&
6724     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6725
6726 if enabled x86; then
6727     case $target_os in
6728         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6729             ;;
6730         *)
6731             disable ffnvcodec cuvid nvdec nvenc
6732             ;;
6733     esac
6734 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6735     case $target_os in
6736         linux)
6737             ;;
6738         *)
6739             disable ffnvcodec cuvid nvdec nvenc
6740             ;;
6741     esac
6742 else
6743     disable ffnvcodec cuvid nvdec nvenc
6744 fi
6745
6746 enabled ffnvcodec && enable cuda
6747
6748 enabled nvenc &&
6749     test_cc -I$source_path <<EOF || disable nvenc
6750 #include <ffnvcodec/nvEncodeAPI.h>
6751 NV_ENCODE_API_FUNCTION_LIST flist;
6752 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6753 int main(void) { return 0; }
6754 EOF
6755
6756 enabled amf &&
6757     check_cpp_condition amf "AMF/core/Version.h" \
6758         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6759
6760 # Funny iconv installations are not unusual, so check it after all flags have been set
6761 if enabled libc_iconv; then
6762     check_func_headers iconv.h iconv
6763 elif enabled iconv; then
6764     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6765 fi
6766
6767 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6768
6769 # add some useful compiler flags if supported
6770 check_cflags -Wdeclaration-after-statement
6771 check_cflags -Wall
6772 check_cflags -Wdisabled-optimization
6773 check_cflags -Wpointer-arith
6774 check_cflags -Wredundant-decls
6775 check_cflags -Wwrite-strings
6776 check_cflags -Wtype-limits
6777 check_cflags -Wundef
6778 check_cflags -Wmissing-prototypes
6779 check_cflags -Wno-pointer-to-int-cast
6780 check_cflags -Wstrict-prototypes
6781 check_cflags -Wempty-body
6782
6783 if enabled extra_warnings; then
6784     check_cflags -Wcast-qual
6785     check_cflags -Wextra
6786     check_cflags -Wpedantic
6787 fi
6788
6789 check_disable_warning(){
6790     warning_flag=-W${1#-Wno-}
6791     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6792 }
6793
6794 test_cflags -Werror=unused-command-line-argument &&
6795     append unknown_warning_flags "-Werror=unused-command-line-argument"
6796 test_cflags -Werror=unknown-warning-option &&
6797     append unknown_warning_flags "-Werror=unknown-warning-option"
6798
6799 check_disable_warning -Wno-parentheses
6800 check_disable_warning -Wno-switch
6801 check_disable_warning -Wno-format-zero-length
6802 check_disable_warning -Wno-pointer-sign
6803 check_disable_warning -Wno-unused-const-variable
6804 check_disable_warning -Wno-bool-operation
6805 check_disable_warning -Wno-char-subscripts
6806
6807 check_disable_warning_headers(){
6808     warning_flag=-W${1#-Wno-}
6809     test_cflags $warning_flag && add_cflags_headers $1
6810 }
6811
6812 check_disable_warning_headers -Wno-deprecated-declarations
6813 check_disable_warning_headers -Wno-unused-variable
6814
6815 test_cc <<EOF && enable blocks_extension
6816 void (^block)(void);
6817 EOF
6818
6819 # add some linker flags
6820 check_ldflags -Wl,--warn-common
6821 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6822 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6823 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6824
6825 # add some strip flags
6826 check_stripflags -x
6827
6828 enabled neon_clobber_test &&
6829     check_ldflags -Wl,--wrap,avcodec_open2              \
6830                   -Wl,--wrap,avcodec_decode_audio4      \
6831                   -Wl,--wrap,avcodec_decode_video2      \
6832                   -Wl,--wrap,avcodec_decode_subtitle2   \
6833                   -Wl,--wrap,avcodec_encode_audio2      \
6834                   -Wl,--wrap,avcodec_encode_video2      \
6835                   -Wl,--wrap,avcodec_encode_subtitle    \
6836                   -Wl,--wrap,avcodec_send_packet        \
6837                   -Wl,--wrap,avcodec_receive_packet     \
6838                   -Wl,--wrap,avcodec_send_frame         \
6839                   -Wl,--wrap,avcodec_receive_frame      \
6840                   -Wl,--wrap,swr_convert                \
6841                   -Wl,--wrap,avresample_convert ||
6842     disable neon_clobber_test
6843
6844 enabled xmm_clobber_test &&
6845     check_ldflags -Wl,--wrap,avcodec_open2              \
6846                   -Wl,--wrap,avcodec_decode_audio4      \
6847                   -Wl,--wrap,avcodec_decode_video2      \
6848                   -Wl,--wrap,avcodec_decode_subtitle2   \
6849                   -Wl,--wrap,avcodec_encode_audio2      \
6850                   -Wl,--wrap,avcodec_encode_video2      \
6851                   -Wl,--wrap,avcodec_encode_subtitle    \
6852                   -Wl,--wrap,avcodec_send_packet        \
6853                   -Wl,--wrap,avcodec_receive_packet     \
6854                   -Wl,--wrap,avcodec_send_frame         \
6855                   -Wl,--wrap,avcodec_receive_frame      \
6856                   -Wl,--wrap,swr_convert                \
6857                   -Wl,--wrap,avresample_convert         \
6858                   -Wl,--wrap,sws_scale ||
6859     disable xmm_clobber_test
6860
6861 check_ld "cc" proper_dce <<EOF
6862 extern const int array[512];
6863 static inline int func(void) { return array[0]; }
6864 int main(void) { return 0; }
6865 EOF
6866
6867 if enabled proper_dce; then
6868     echo "X { local: *; };" > $TMPV
6869     if test_ldflags -Wl,${version_script},$TMPV; then
6870         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6871         quotes='""'
6872         test_cc <<EOF && enable symver_asm_label
6873 void ff_foo(void) __asm__ ("av_foo@VERSION");
6874 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6875 EOF
6876         test_cc <<EOF && enable symver_gnu_asm
6877 __asm__(".symver ff_foo,av_foo@VERSION");
6878 void ff_foo(void) {}
6879 EOF
6880     fi
6881 fi
6882
6883 if [ -z "$optflags" ]; then
6884     if enabled small; then
6885         optflags=$cflags_size
6886     elif enabled optimizations; then
6887         optflags=$cflags_speed
6888     else
6889         optflags=$cflags_noopt
6890     fi
6891 fi
6892
6893 check_optflags(){
6894     check_cflags "$@"
6895     enabled lto && check_ldflags "$@"
6896 }
6897
6898 check_optflags $optflags
6899 check_optflags -fno-math-errno
6900 check_optflags -fno-signed-zeros
6901
6902 if enabled lto; then
6903     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6904     check_cflags  -flto
6905     check_ldflags -flto $cpuflags
6906     disable inline_asm_direct_symbol_refs
6907 fi
6908
6909 enabled ftrapv && check_cflags -ftrapv
6910
6911 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6912 int x;
6913 EOF
6914
6915
6916 if enabled icc; then
6917     # Just warnings, no remarks
6918     check_cflags -w1
6919     # -wd: Disable following warnings
6920     # 144, 167, 556: -Wno-pointer-sign
6921     # 188: enumerated type mixed with another type
6922     # 1292: attribute "foo" ignored
6923     # 1419: external declaration in primary source file
6924     # 10006: ignoring unknown option -fno-signed-zeros
6925     # 10148: ignoring unknown option -Wno-parentheses
6926     # 10156: ignoring option '-W'; no argument required
6927     # 13200: No EMMS instruction before call to function
6928     # 13203: No EMMS instruction before return from function
6929     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6930     # 11030: Warning unknown option --as-needed
6931     # 10156: ignoring option '-export'; no argument required
6932     check_ldflags -wd10156,11030
6933     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6934     enable ebp_available
6935     # The test above does not test linking
6936     enabled lto && disable symver_asm_label
6937     if enabled x86_32; then
6938         icc_version=$($cc -dumpversion)
6939         test ${icc_version%%.*} -ge 11 &&
6940             check_cflags -falign-stack=maintain-16-byte ||
6941             disable aligned_stack
6942     fi
6943 elif enabled gcc; then
6944     check_optflags -fno-tree-vectorize
6945     check_cflags -Werror=format-security
6946     check_cflags -Werror=implicit-function-declaration
6947     check_cflags -Werror=missing-prototypes
6948     check_cflags -Werror=return-type
6949     check_cflags -Werror=vla
6950     check_cflags -Wformat
6951     check_cflags -fdiagnostics-color=auto
6952     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6953     if enabled x86_32; then
6954         case $target_os in
6955         *bsd*)
6956             # BSDs don't guarantee a 16 byte aligned stack, but we can
6957             # request GCC to try to maintain 16 byte alignment throughout
6958             # function calls. Library entry points that might call assembly
6959             # functions align the stack. (The parameter means 2^4 bytes.)
6960             check_cflags -mpreferred-stack-boundary=4
6961             ;;
6962         esac
6963     fi
6964 elif enabled llvm_gcc; then
6965     check_cflags -mllvm -stack-alignment=16
6966 elif enabled clang; then
6967     if enabled x86_32; then
6968         # Clang doesn't support maintaining alignment without assuming the
6969         # same alignment in every function. If 16 byte alignment would be
6970         # enabled, one would also have to either add attribute_align_arg on
6971         # every single entry point into the libraries or enable -mstackrealign
6972         # (doing stack realignment in every single function).
6973         case $target_os in
6974         mingw32|win32|*bsd*)
6975             disable aligned_stack
6976             ;;
6977         *)
6978             check_cflags -mllvm -stack-alignment=16
6979             check_cflags -mstack-alignment=16
6980             ;;
6981         esac
6982     else
6983         check_cflags -mllvm -stack-alignment=16
6984         check_cflags -mstack-alignment=16
6985     fi
6986     check_cflags -Qunused-arguments
6987     check_cflags -Werror=implicit-function-declaration
6988     check_cflags -Werror=missing-prototypes
6989     check_cflags -Werror=return-type
6990 elif enabled cparser; then
6991     add_cflags -Wno-missing-variable-declarations
6992     add_cflags -Wno-empty-statement
6993 elif enabled armcc; then
6994     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6995     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6996     # 2523: use of inline assembly is deprecated
6997     add_cflags -W${armcc_opt},--diag_suppress=2523
6998     add_cflags -W${armcc_opt},--diag_suppress=1207
6999     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7000     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7001     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7002     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7003 elif enabled pathscale; then
7004     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7005     disable inline_asm
7006 elif enabled_any msvc icl; then
7007     enabled x86_32 && disable aligned_stack
7008     enabled_all x86_32 debug && add_cflags -Oy-
7009     enabled debug && add_ldflags -debug
7010     enable pragma_deprecated
7011     if enabled icl; then
7012         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7013         # (correctly) on icl 13.x.
7014         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7015             add_cflags -Qansi-alias
7016         # Some inline asm is not compilable in debug
7017         if enabled debug; then
7018             disable ebp_available
7019             disable ebx_available
7020         fi
7021     fi
7022     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7023     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7024     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7025     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7026     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7027     # MSVC 2013 and newer can handle it fine.
7028     # If this declspec fails, force including stdlib.h before the restrict redefinition
7029     # happens in config.h.
7030     if [ $restrict_keyword != restrict ]; then
7031         test_cc <<EOF || add_cflags -FIstdlib.h
7032 __declspec($restrict_keyword) void *foo(int);
7033 EOF
7034     fi
7035     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7036     # Issue has been fixed in MSVC v19.00.24218.
7037     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7038         check_cflags -d2SSAOptimizer-
7039     # enable utf-8 source processing on VS2015 U2 and newer
7040     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7041         add_cflags -utf-8
7042 fi
7043
7044 for pfx in "" host_; do
7045     varname=${pfx%_}cc_type
7046     eval "type=\$$varname"
7047     if [ "$type" = "msvc" ]; then
7048         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7049 static inline int foo(int a) { return a; }
7050 EOF
7051     fi
7052 done
7053
7054 case $as_type in
7055     clang)
7056         add_asflags -Qunused-arguments
7057     ;;
7058 esac
7059
7060 case $ld_type in
7061     clang)
7062         check_ldflags -Qunused-arguments
7063     ;;
7064 esac
7065
7066 enable frame_thread_encoder
7067
7068 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7069
7070 check_deps $CONFIG_LIST       \
7071            $CONFIG_EXTRA      \
7072            $HAVE_LIST         \
7073            $ALL_COMPONENTS    \
7074
7075 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"
7076 enabled avresample && warn "Building with deprecated library libavresample"
7077
7078 case $target_os in
7079 haiku)
7080     disable memalign
7081     disable posix_memalign
7082     ;;
7083 *-dos|freedos|opendos)
7084     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7085         disable memalign
7086     fi
7087     ;;
7088 esac
7089
7090 flatten_extralibs(){
7091     nested_entries=
7092     list_name=$1
7093     eval list=\$${1}
7094     for entry in $list; do
7095         entry_copy=$entry
7096         resolve entry_copy
7097         flat_entries=
7098         for e in $entry_copy; do
7099             case $e in
7100                 *_extralibs) nested_entries="$nested_entries$e ";;
7101                           *) flat_entries="$flat_entries$e ";;
7102             esac
7103         done
7104         eval $entry="\$flat_entries"
7105     done
7106     append $list_name "$nested_entries"
7107
7108     resolve nested_entries
7109     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7110         flatten_extralibs $list_name
7111     fi
7112 }
7113
7114 flatten_extralibs_wrapper(){
7115     list_name=$1
7116     flatten_extralibs $list_name
7117     unique $list_name
7118     resolve $list_name
7119     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7120     eval printf \''%s'\' \""\$$list_name"\"
7121 }
7122
7123 for linkunit in $LIBRARY_LIST; do
7124     unset current_extralibs
7125     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7126     for comp in ${components}; do
7127         enabled $comp || continue
7128         comp_extralibs="${comp}_extralibs"
7129         append current_extralibs $comp_extralibs
7130     done
7131     eval prepend ${linkunit}_extralibs $current_extralibs
7132 done
7133
7134 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7135     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7136 done
7137
7138 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7139
7140 for thread in $THREADS_LIST; do
7141     if enabled $thread; then
7142         test -n "$thread_type" &&
7143             die "ERROR: Only one thread type must be selected." ||
7144             thread_type="$thread"
7145     fi
7146 done
7147
7148 if disabled stdatomic; then
7149     if enabled atomics_gcc; then
7150         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7151     elif enabled atomics_win32; then
7152         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7153     elif enabled atomics_suncc; then
7154         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7155     elif enabled pthreads; then
7156         add_compat atomics/pthread/stdatomic.o
7157         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7158     else
7159         enabled threads && die "Threading is enabled, but no atomics are available"
7160         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7161     fi
7162 fi
7163
7164 # Check if requested libraries were found.
7165 for lib in $AUTODETECT_LIBS; do
7166     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7167 done
7168
7169 enabled zlib && add_cppflags -DZLIB_CONST
7170
7171 # conditional library dependencies, in any order
7172 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7173 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7174 enabled afir_filter         && prepend avfilter_deps "avcodec"
7175 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7176 enabled aresample_filter    && prepend avfilter_deps "swresample"
7177 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7178 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7179 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7180 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7181 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7182 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7183 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7184 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7185 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7186 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7187 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7188 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7189 enabled pan_filter          && prepend avfilter_deps "swresample"
7190 enabled pp_filter           && prepend avfilter_deps "postproc"
7191 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7192 enabled resample_filter && prepend avfilter_deps "avresample"
7193 enabled sab_filter          && prepend avfilter_deps "swscale"
7194 enabled scale_filter    && prepend avfilter_deps "swscale"
7195 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7196 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7197 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7198 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7199 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7200 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7201 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7202 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7203 enabled spp_filter          && prepend avfilter_deps "avcodec"
7204 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7205 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7206 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7207 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7208
7209 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7210
7211 #FIXME
7212 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7213     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7214
7215 enabled opus_decoder    && prepend avcodec_deps "swresample"
7216
7217 # reorder the items at var $1 to align with the items order at var $2 .
7218 # die if an item at $1 is not at $2 .
7219 reorder_by(){
7220     eval rb_in=\$$1
7221     eval rb_ordered=\$$2
7222
7223     for rb in $rb_in; do
7224         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7225     done
7226
7227     rb_out=
7228     for rb in $rb_ordered; do
7229         is_in $rb $rb_in && rb_out="$rb_out$rb "
7230     done
7231     eval $1=\$rb_out
7232 }
7233
7234 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7235 # within a set of N items, N expansions are enough to expose a cycle.
7236 expand_deps(){
7237     unique ${1}_deps  # required for the early break test.
7238     for dummy in $LIBRARY_LIST; do  # N iteratios
7239         eval deps=\$${1}_deps
7240         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7241         unique ${1}_deps
7242         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7243     done
7244
7245     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7246     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7247 }
7248
7249 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7250 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7251
7252 map 'expand_deps $v' $LIBRARY_LIST
7253
7254 if test "$quiet" != "yes"; then
7255
7256 echo "install prefix            $prefix"
7257 echo "source path               $source_path"
7258 echo "C compiler                $cc"
7259 echo "C library                 $libc_type"
7260 if test "$host_cc" != "$cc"; then
7261     echo "host C compiler           $host_cc"
7262     echo "host C library            $host_libc_type"
7263 fi
7264 echo "ARCH                      $arch ($cpu)"
7265 if test "$build_suffix" != ""; then
7266     echo "build suffix              $build_suffix"
7267 fi
7268 if test "$progs_suffix" != ""; then
7269     echo "progs suffix              $progs_suffix"
7270 fi
7271 if test "$extra_version" != ""; then
7272     echo "version string suffix     $extra_version"
7273 fi
7274 echo "big-endian                ${bigendian-no}"
7275 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7276 if enabled x86; then
7277     echo "standalone assembly       ${x86asm-no}"
7278     echo "x86 assembler             ${x86asmexe}"
7279     echo "MMX enabled               ${mmx-no}"
7280     echo "MMXEXT enabled            ${mmxext-no}"
7281     echo "3DNow! enabled            ${amd3dnow-no}"
7282     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7283     echo "SSE enabled               ${sse-no}"
7284     echo "SSSE3 enabled             ${ssse3-no}"
7285     echo "AESNI enabled             ${aesni-no}"
7286     echo "AVX enabled               ${avx-no}"
7287     echo "AVX2 enabled              ${avx2-no}"
7288     echo "AVX-512 enabled           ${avx512-no}"
7289     echo "XOP enabled               ${xop-no}"
7290     echo "FMA3 enabled              ${fma3-no}"
7291     echo "FMA4 enabled              ${fma4-no}"
7292     echo "i686 features enabled     ${i686-no}"
7293     echo "CMOV is fast              ${fast_cmov-no}"
7294     echo "EBX available             ${ebx_available-no}"
7295     echo "EBP available             ${ebp_available-no}"
7296 fi
7297 if enabled aarch64; then
7298     echo "NEON enabled              ${neon-no}"
7299     echo "VFP enabled               ${vfp-no}"
7300 fi
7301 if enabled arm; then
7302     echo "ARMv5TE enabled           ${armv5te-no}"
7303     echo "ARMv6 enabled             ${armv6-no}"
7304     echo "ARMv6T2 enabled           ${armv6t2-no}"
7305     echo "VFP enabled               ${vfp-no}"
7306     echo "NEON enabled              ${neon-no}"
7307     echo "THUMB enabled             ${thumb-no}"
7308 fi
7309 if enabled mips; then
7310     echo "MIPS FPU enabled          ${mipsfpu-no}"
7311     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7312     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7313     echo "MIPS MSA enabled          ${msa-no}"
7314     echo "MIPS MSA2 enabled         ${msa2-no}"
7315     echo "LOONGSON MMI enabled      ${mmi-no}"
7316 fi
7317 if enabled ppc; then
7318     echo "AltiVec enabled           ${altivec-no}"
7319     echo "VSX enabled               ${vsx-no}"
7320     echo "POWER8 enabled            ${power8-no}"
7321     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7322     echo "dcbzl available           ${dcbzl-no}"
7323 fi
7324 echo "debug symbols             ${debug-no}"
7325 echo "strip symbols             ${stripping-no}"
7326 echo "optimize for size         ${small-no}"
7327 echo "optimizations             ${optimizations-no}"
7328 echo "static                    ${static-no}"
7329 echo "shared                    ${shared-no}"
7330 echo "postprocessing support    ${postproc-no}"
7331 echo "network support           ${network-no}"
7332 echo "threading support         ${thread_type-no}"
7333 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7334 echo "texi2html enabled         ${texi2html-no}"
7335 echo "perl enabled              ${perl-no}"
7336 echo "pod2man enabled           ${pod2man-no}"
7337 echo "makeinfo enabled          ${makeinfo-no}"
7338 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7339 test -n "$random_seed" &&
7340     echo "random seed               ${random_seed}"
7341 echo
7342
7343 echo "External libraries:"
7344 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7345 echo
7346
7347 echo "External libraries providing hardware acceleration:"
7348 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7349 echo
7350
7351 echo "Libraries:"
7352 print_enabled '' $LIBRARY_LIST | print_in_columns
7353 echo
7354
7355 echo "Programs:"
7356 print_enabled '' $PROGRAM_LIST | print_in_columns
7357 echo
7358
7359 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7360     echo "Enabled ${type}s:"
7361     eval list=\$$(toupper $type)_LIST
7362     print_enabled '_*' $list | print_in_columns
7363     echo
7364 done
7365
7366 if test -n "$ignore_tests"; then
7367     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7368     echo "Ignored FATE tests:"
7369     echo $ignore_tests | print_in_columns
7370     echo
7371 fi
7372
7373 echo "License: $license"
7374
7375 fi # test "$quiet" != "yes"
7376
7377 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7378     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7379         if disabled $cfg; then
7380             varname=${cfg}_disable_reason
7381             eval "warn \"Disabled $cfg because \$$varname\""
7382         fi
7383     done
7384 fi
7385
7386 if test -n "$WARNINGS"; then
7387     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7388     enabled fatal_warnings && exit 1
7389 fi
7390
7391 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7392
7393 esc(){
7394     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7395 }
7396
7397 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7398
7399 enabled stripping || strip="echo skipping strip"
7400 enabled stripping || striptype=""
7401
7402 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7403
7404 cat > ffbuild/config.mak <<EOF
7405 # Automatically generated by configure - do not modify!
7406 ifndef FFMPEG_CONFIG_MAK
7407 FFMPEG_CONFIG_MAK=1
7408 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7409 prefix=$prefix
7410 LIBDIR=\$(DESTDIR)$libdir
7411 SHLIBDIR=\$(DESTDIR)$shlibdir
7412 INCDIR=\$(DESTDIR)$incdir
7413 BINDIR=\$(DESTDIR)$bindir
7414 DATADIR=\$(DESTDIR)$datadir
7415 DOCDIR=\$(DESTDIR)$docdir
7416 MANDIR=\$(DESTDIR)$mandir
7417 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7418 INSTALL_NAME_DIR=$install_name_dir
7419 SRC_PATH=$source_path
7420 SRC_LINK=$source_link
7421 ifndef MAIN_MAKEFILE
7422 SRC_PATH:=\$(SRC_PATH:.%=..%)
7423 endif
7424 CC_IDENT=$cc_ident
7425 ARCH=$arch
7426 INTRINSICS=$intrinsics
7427 EXTERN_PREFIX=$extern_prefix
7428 CC=$cc
7429 CXX=$cxx
7430 AS=$as
7431 OBJCC=$objcc
7432 LD=$ld
7433 DEPCC=$dep_cc
7434 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7435 DEPAS=$as
7436 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7437 X86ASM=$x86asmexe
7438 DEPX86ASM=$x86asmexe
7439 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7440 AR=$ar
7441 ARFLAGS=$arflags
7442 AR_O=$ar_o
7443 AR_CMD=$ar
7444 NM_CMD=$nm
7445 RANLIB=$ranlib
7446 STRIP=$strip
7447 STRIPTYPE=$striptype
7448 NVCC=$nvcc
7449 CP=cp -p
7450 LN_S=$ln_s
7451 CPPFLAGS=$CPPFLAGS
7452 CFLAGS=$CFLAGS
7453 CXXFLAGS=$CXXFLAGS
7454 OBJCFLAGS=$OBJCFLAGS
7455 ASFLAGS=$ASFLAGS
7456 NVCCFLAGS=$nvccflags
7457 AS_C=$AS_C
7458 AS_O=$AS_O
7459 OBJCC_C=$OBJCC_C
7460 OBJCC_E=$OBJCC_E
7461 OBJCC_O=$OBJCC_O
7462 CC_C=$CC_C
7463 CC_E=$CC_E
7464 CC_O=$CC_O
7465 CXX_C=$CXX_C
7466 CXX_O=$CXX_O
7467 NVCC_C=$NVCC_C
7468 NVCC_O=$NVCC_O
7469 LD_O=$LD_O
7470 X86ASM_O=$X86ASM_O
7471 LD_LIB=$LD_LIB
7472 LD_PATH=$LD_PATH
7473 DLLTOOL=$dlltool
7474 WINDRES=$windres
7475 DEPWINDRES=$dep_cc
7476 DOXYGEN=$doxygen
7477 LDFLAGS=$LDFLAGS
7478 LDEXEFLAGS=$LDEXEFLAGS
7479 LDSOFLAGS=$LDSOFLAGS
7480 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7481 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7482 X86ASMFLAGS=$X86ASMFLAGS
7483 MSAFLAGS=$MSAFLAGS
7484 MMIFLAGS=$MMIFLAGS
7485 BUILDSUF=$build_suffix
7486 PROGSSUF=$progs_suffix
7487 FULLNAME=$FULLNAME
7488 LIBPREF=$LIBPREF
7489 LIBSUF=$LIBSUF
7490 LIBNAME=$LIBNAME
7491 SLIBPREF=$SLIBPREF
7492 SLIBSUF=$SLIBSUF
7493 EXESUF=$EXESUF
7494 EXTRA_VERSION=$extra_version
7495 CCDEP=$CCDEP
7496 CXXDEP=$CXXDEP
7497 CCDEP_FLAGS=$CCDEP_FLAGS
7498 ASDEP=$ASDEP
7499 ASDEP_FLAGS=$ASDEP_FLAGS
7500 X86ASMDEP=$X86ASMDEP
7501 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7502 CC_DEPFLAGS=$CC_DEPFLAGS
7503 AS_DEPFLAGS=$AS_DEPFLAGS
7504 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7505 HOSTCC=$host_cc
7506 HOSTLD=$host_ld
7507 HOSTCFLAGS=$host_cflags
7508 HOSTCPPFLAGS=$host_cppflags
7509 HOSTEXESUF=$HOSTEXESUF
7510 HOSTLDFLAGS=$host_ldflags
7511 HOSTEXTRALIBS=$host_extralibs
7512 DEPHOSTCC=$host_cc
7513 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7514 HOSTCCDEP=$HOSTCCDEP
7515 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7516 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7517 HOSTCC_C=$HOSTCC_C
7518 HOSTCC_O=$HOSTCC_O
7519 HOSTLD_O=$HOSTLD_O
7520 TARGET_EXEC=$target_exec $target_exec_args
7521 TARGET_PATH=$target_path
7522 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7523 CFLAGS-ffplay=${sdl2_cflags}
7524 CFLAGS_HEADERS=$CFLAGS_HEADERS
7525 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7526 EXTRALIBS=$extralibs
7527 COMPAT_OBJS=$compat_objs
7528 INSTALL=$install
7529 LIBTARGET=${LIBTARGET}
7530 SLIBNAME=${SLIBNAME}
7531 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7532 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7533 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7534 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7535 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7536 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7537 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7538 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7539 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7540 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7541 NOREDZONE_FLAGS=$noredzone_flags
7542 LIBFUZZER_PATH=$libfuzzer_path
7543 IGNORE_TESTS=$ignore_tests
7544 EOF
7545
7546 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7547
7548 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7549     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7550 done
7551
7552 cat > $TMPH <<EOF
7553 /* Automatically generated by configure - do not modify! */
7554 #ifndef FFMPEG_CONFIG_H
7555 #define FFMPEG_CONFIG_H
7556 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7557 #define FFMPEG_LICENSE "$(c_escape $license)"
7558 #define CONFIG_THIS_YEAR 2020
7559 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7560 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7561 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7562 #define av_restrict $restrict_keyword
7563 #define EXTERN_PREFIX "${extern_prefix}"
7564 #define EXTERN_ASM ${extern_prefix}
7565 #define BUILDSUF "$build_suffix"
7566 #define SLIBSUF "$SLIBSUF"
7567 #define HAVE_MMX2 HAVE_MMXEXT
7568 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7569 EOF
7570
7571 test -n "$assert_level" &&
7572     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7573
7574 test -n "$malloc_prefix" &&
7575     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7576
7577 if enabled x86asm; then
7578     append config_files $TMPASM
7579     cat > $TMPASM <<EOF
7580 ; Automatically generated by configure - do not modify!
7581 EOF
7582 fi
7583
7584 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7585
7586
7587 mkdir -p doc
7588 mkdir -p tests
7589 mkdir -p tests/api
7590 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7591
7592 print_config ARCH_   "$config_files" $ARCH_LIST
7593 print_config HAVE_   "$config_files" $HAVE_LIST
7594 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7595                                      $CONFIG_EXTRA      \
7596                                      $ALL_COMPONENTS    \
7597
7598 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7599 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7600
7601 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7602 cp_if_changed $TMPH config.h
7603 touch ffbuild/.config
7604
7605 enabled x86asm && cp_if_changed $TMPASM config.asm
7606
7607 cat > $TMPH <<EOF
7608 /* Generated by ffmpeg configure */
7609 #ifndef AVUTIL_AVCONFIG_H
7610 #define AVUTIL_AVCONFIG_H
7611 EOF
7612
7613 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7614
7615 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7616
7617 cp_if_changed $TMPH libavutil/avconfig.h
7618
7619 # full_filter_name_foo=vf_foo
7620 # full_filter_name_bar=asrc_bar
7621 # ...
7622 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7623
7624 # generate the lists of enabled components
7625 print_enabled_components(){
7626     file=$1
7627     struct_name=$2
7628     name=$3
7629     shift 3
7630     echo "static const $struct_name * const $name[] = {" > $TMPH
7631     for c in $*; do
7632         if enabled $c; then
7633             case $name in
7634                 filter_list)
7635                     eval c=\$full_filter_name_${c%_filter}
7636                 ;;
7637                 indev_list)
7638                     c=${c%_indev}_demuxer
7639                 ;;
7640                 outdev_list)
7641                     c=${c%_outdev}_muxer
7642                 ;;
7643             esac
7644             printf "    &ff_%s,\n" $c >> $TMPH
7645         fi
7646     done
7647     if [ "$name" = "filter_list" ]; then
7648         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7649             printf "    &ff_%s,\n" $c >> $TMPH
7650         done
7651     fi
7652     echo "    NULL };" >> $TMPH
7653     cp_if_changed $TMPH $file
7654 }
7655
7656 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7657 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7658 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7659 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7660 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7661 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7662 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7663 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7664 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7665
7666 # Settings for pkg-config files
7667
7668 cat > $TMPH <<EOF
7669 # Automatically generated by configure - do not modify!
7670 shared=$shared
7671 build_suffix=$build_suffix
7672 prefix=$prefix
7673 libdir=$libdir
7674 incdir=$incdir
7675 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7676 source_path=${source_path}
7677 LIBPREF=${LIBPREF}
7678 LIBSUF=${LIBSUF}
7679 extralibs_avutil="$avutil_extralibs"
7680 extralibs_avcodec="$avcodec_extralibs"
7681 extralibs_avformat="$avformat_extralibs"
7682 extralibs_avdevice="$avdevice_extralibs"
7683 extralibs_avfilter="$avfilter_extralibs"
7684 extralibs_avresample="$avresample_extralibs"
7685 extralibs_postproc="$postproc_extralibs"
7686 extralibs_swscale="$swscale_extralibs"
7687 extralibs_swresample="$swresample_extralibs"
7688 EOF
7689
7690 for lib in $LIBRARY_LIST; do
7691     lib_deps="$(eval echo \$${lib}_deps)"
7692     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7693 done
7694
7695 cp_if_changed $TMPH ffbuild/config.sh