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-libopus         enable Opus de/encoding via libopus [no]
 257   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 258   --enable-librabbitmq     enable RabbitMQ library [no]
 259   --enable-librav1e        enable AV1 encoding via rav1e [no]
 260   --enable-librsvg         enable SVG rasterization via librsvg [no]
 261   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 262   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 263   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 264   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 265   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 266   --enable-libsoxr         enable Include libsoxr resampling [no]
 267   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 268   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 269   --enable-libssh          enable SFTP protocol via libssh [no]
 270   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 271                            for DNN based filters like sr [no]
 272   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 273   --enable-libtheora       enable Theora encoding via libtheora [no]
 274   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 275                            if openssl, gnutls or mbedtls is not used [no]
 276   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 277   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 278   --enable-libvidstab      enable video stabilization using vid.stab [no]
 279   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 280   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 281   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 282                            native implementation exists [no]
 283   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 284   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 285   --enable-libwebp         enable WebP encoding via libwebp [no]
 286   --enable-libx264         enable H.264 encoding via x264 [no]
 287   --enable-libx265         enable HEVC encoding via x265 [no]
 288   --enable-libxavs         enable AVS encoding via xavs [no]
 289   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 290   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 291   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 292   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 293   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 294   --enable-libxvid         enable Xvid encoding via xvidcore,
 295                            native MPEG-4/Xvid encoder exists [no]
 296   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 297                            for dash demuxing support [no]
 298   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 299   --enable-libzmq          enable message passing via libzmq [no]
 300   --enable-libzvbi         enable teletext support via libzvbi [no]
 301   --enable-lv2             enable LV2 audio filtering [no]
 302   --disable-lzma           disable lzma [autodetect]
 303   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 304   --enable-mbedtls         enable mbedTLS, needed for https support
 305                            if openssl, gnutls or libtls is not used [no]
 306   --enable-mediacodec      enable Android MediaCodec support [no]
 307   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 308   --enable-openal          enable OpenAL 1.1 capture support [no]
 309   --enable-opencl          enable OpenCL processing [no]
 310   --enable-opengl          enable OpenGL rendering [no]
 311   --enable-openssl         enable openssl, needed for https support
 312                            if gnutls, libtls or mbedtls is not used [no]
 313   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 314   --disable-sndio          disable sndio support [autodetect]
 315   --disable-schannel       disable SChannel SSP, needed for TLS support on
 316                            Windows if openssl and gnutls are not used [autodetect]
 317   --disable-sdl2           disable sdl2 [autodetect]
 318   --disable-securetransport disable Secure Transport, needed for TLS support
 319                            on OSX if openssl and gnutls are not used [autodetect]
 320   --enable-vapoursynth     enable VapourSynth demuxer [no]
 321   --enable-vulkan          enable Vulkan code [no]
 322   --disable-xlib           disable xlib [autodetect]
 323   --disable-zlib           disable zlib [autodetect]
 324
 325   The following libraries provide various hardware acceleration features:
 326   --disable-amf            disable AMF video encoding code [autodetect]
 327   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 328   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 329   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 330   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 331   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 332   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 333   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 334   --enable-libdrm          enable DRM code (Linux) [no]
 335   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 336   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 337   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 338   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 339   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 340   --enable-omx             enable OpenMAX IL code [no]
 341   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 342   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 343   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 344   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 345   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 346   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 347
 348 Toolchain options:
 349   --arch=ARCH              select architecture [$arch]
 350   --cpu=CPU                select the minimum required CPU (affects
 351                            instruction selection, may crash on older CPUs)
 352   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 353   --progs-suffix=SUFFIX    program name suffix []
 354   --enable-cross-compile   assume a cross-compiler is used
 355   --sysroot=PATH           root of cross-build tree
 356   --sysinclude=PATH        location of cross-build system headers
 357   --target-os=OS           compiler targets OS [$target_os]
 358   --target-exec=CMD        command to run executables on target
 359   --target-path=DIR        path to view of build directory on target
 360   --target-samples=DIR     path to samples directory on target
 361   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 362   --toolchain=NAME         set tool defaults according to NAME
 363                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 364                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 365                            valgrind-massif, valgrind-memcheck,
 366                            msvc, icl, gcov, llvm-cov, hardened)
 367   --nm=NM                  use nm tool NM [$nm_default]
 368   --ar=AR                  use archive tool AR [$ar_default]
 369   --as=AS                  use assembler AS [$as_default]
 370   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 371   --strip=STRIP            use strip tool STRIP [$strip_default]
 372   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 373   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 374   --cc=CC                  use C compiler CC [$cc_default]
 375   --cxx=CXX                use C compiler CXX [$cxx_default]
 376   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 377   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 378   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 379   --ld=LD                  use linker LD [$ld_default]
 380   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 381   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 382   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 383   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 384   --host-cc=HOSTCC         use host C compiler HOSTCC
 385   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 386   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 387   --host-ld=HOSTLD         use host linker HOSTLD
 388   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 389   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 390   --host-os=OS             compiler host OS [$target_os]
 391   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 392   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 393   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 394   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 395   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 396   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 397   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 398   --extra-version=STRING   version string suffix []
 399   --optflags=OPTFLAGS      override optimization-related compiler flags
 400   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 401   --build-suffix=SUFFIX    library name suffix []
 402   --enable-pic             build position-independent code
 403   --enable-thumb           compile for Thumb instruction set
 404   --enable-lto             use link-time optimization
 405   --env="ENV=override"     override the environment variables
 406
 407 Advanced options (experts only):
 408   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 409   --custom-allocator=NAME  use a supported custom allocator
 410   --disable-symver         disable symbol versioning
 411   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 412   --disable-safe-bitstream-reader
 413                            disable buffer boundary checking in bitreaders
 414                            (faster, but may crash)
 415   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 416
 417 Optimization options (experts only):
 418   --disable-asm            disable all assembly optimizations
 419   --disable-altivec        disable AltiVec optimizations
 420   --disable-vsx            disable VSX optimizations
 421   --disable-power8         disable POWER8 optimizations
 422   --disable-amd3dnow       disable 3DNow! optimizations
 423   --disable-amd3dnowext    disable 3DNow! extended optimizations
 424   --disable-mmx            disable MMX optimizations
 425   --disable-mmxext         disable MMXEXT optimizations
 426   --disable-sse            disable SSE optimizations
 427   --disable-sse2           disable SSE2 optimizations
 428   --disable-sse3           disable SSE3 optimizations
 429   --disable-ssse3          disable SSSE3 optimizations
 430   --disable-sse4           disable SSE4 optimizations
 431   --disable-sse42          disable SSE4.2 optimizations
 432   --disable-avx            disable AVX optimizations
 433   --disable-xop            disable XOP optimizations
 434   --disable-fma3           disable FMA3 optimizations
 435   --disable-fma4           disable FMA4 optimizations
 436   --disable-avx2           disable AVX2 optimizations
 437   --disable-avx512         disable AVX-512 optimizations
 438   --disable-aesni          disable AESNI optimizations
 439   --disable-armv5te        disable armv5te optimizations
 440   --disable-armv6          disable armv6 optimizations
 441   --disable-armv6t2        disable armv6t2 optimizations
 442   --disable-vfp            disable VFP optimizations
 443   --disable-neon           disable NEON optimizations
 444   --disable-inline-asm     disable use of inline assembly
 445   --disable-x86asm         disable use of standalone x86 assembly
 446   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 447   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 448   --disable-msa            disable MSA optimizations
 449   --disable-msa2           disable MSA2 optimizations
 450   --disable-mipsfpu        disable floating point MIPS optimizations
 451   --disable-mmi            disable Loongson SIMD optimizations
 452   --disable-fast-unaligned consider unaligned accesses slow
 453
 454 Developer options (useful when working on FFmpeg itself):
 455   --disable-debug          disable debugging symbols
 456   --enable-debug=LEVEL     set the debug level [$debuglevel]
 457   --disable-optimizations  disable compiler optimizations
 458   --enable-extra-warnings  enable more compiler warnings
 459   --disable-stripping      disable stripping of executables and shared libraries
 460   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 461                            2 causes a slowdown at runtime.
 462   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 463   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 464                            leaks and errors, using the specified valgrind binary.
 465                            Cannot be combined with --target-exec
 466   --enable-ftrapv          Trap arithmetic overflows
 467   --samples=PATH           location of test samples for FATE, if not set use
 468                            \$FATE_SAMPLES at make invocation time.
 469   --enable-neon-clobber-test check NEON registers for clobbering (should be
 470                            used only for debugging purposes)
 471   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 472                            should be used only for debugging purposes)
 473   --enable-random          randomly enable/disable components
 474   --disable-random
 475   --enable-random=LIST     randomly enable/disable specific components or
 476   --disable-random=LIST    component groups. LIST is a comma-separated list
 477                            of NAME[:PROB] entries where NAME is a component
 478                            (group) and PROB the probability associated with
 479                            NAME (default 0.5).
 480   --random-seed=VALUE      seed value for --enable/disable-random
 481   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 482                            (only applies to --disable-optimizations builds)
 483   --enable-ossfuzz         Enable building fuzzer tool
 484   --libfuzzer=PATH         path to libfuzzer
 485   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 486                            in the name) of tests whose result is ignored
 487   --enable-linux-perf      enable Linux Performance Monitor API
 488   --disable-large-tests    disable tests that use a large amount of memory
 489
 490 NOTE: Object files are built at the place where configure is launched.
 491 EOF
 492   exit 0
 493 }
 494
 495 if test -t 1 && which tput >/dev/null 2>&1; then
 496     ncolors=$(tput colors)
 497     if test -n "$ncolors" && test $ncolors -ge 8; then
 498         bold_color=$(tput bold)
 499         warn_color=$(tput setaf 3)
 500         error_color=$(tput setaf 1)
 501         reset_color=$(tput sgr0)
 502     fi
 503     # 72 used instead of 80 since that's the default of pr
 504     ncols=$(tput cols)
 505 fi
 506 : ${ncols:=72}
 507
 508 log(){
 509     echo "$@" >> $logfile
 510 }
 511
 512 log_file(){
 513     log BEGIN "$1"
 514     log_file_i=1
 515     while IFS= read -r log_file_line; do
 516         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 517         log_file_i=$(($log_file_i+1))
 518     done < "$1" >> "$logfile"
 519     log END "$1"
 520 }
 521
 522 warn(){
 523     log "WARNING: $*"
 524     WARNINGS="${WARNINGS}WARNING: $*\n"
 525 }
 526
 527 die(){
 528     log "$@"
 529     echo "$error_color$bold_color$@$reset_color"
 530     cat <<EOF
 531
 532 If you think configure made a mistake, make sure you are using the latest
 533 version from Git.  If the latest version fails, report the problem to the
 534 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 535 EOF
 536     if disabled logging; then
 537         cat <<EOF
 538 Rerun configure with logging enabled (do not use --disable-logging), and
 539 include the log this produces with your report.
 540 EOF
 541     else
 542         cat <<EOF
 543 Include the log file "$logfile" produced by configure as this will help
 544 solve the problem.
 545 EOF
 546     fi
 547     exit 1
 548 }
 549
 550 # Avoid locale weirdness, besides we really just want to translate ASCII.
 551 toupper(){
 552     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 553 }
 554
 555 tolower(){
 556     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 557 }
 558
 559 c_escape(){
 560     echo "$*" | sed 's/["\\]/\\\0/g'
 561 }
 562
 563 sh_quote(){
 564     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 565     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 566     echo "$v"
 567 }
 568
 569 cleanws(){
 570     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 571 }
 572
 573 filter(){
 574     pat=$1
 575     shift
 576     for v; do
 577         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 578     done
 579 }
 580
 581 filter_out(){
 582     pat=$1
 583     shift
 584     for v; do
 585         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 586     done
 587 }
 588
 589 map(){
 590     m=$1
 591     shift
 592     for v; do eval $m; done
 593 }
 594
 595 add_suffix(){
 596     suffix=$1
 597     shift
 598     for v; do echo ${v}${suffix}; done
 599 }
 600
 601 remove_suffix(){
 602     suffix=$1
 603     shift
 604     for v; do echo ${v%$suffix}; done
 605 }
 606
 607 set_all(){
 608     value=$1
 609     shift
 610     for var in $*; do
 611         eval $var=$value
 612     done
 613 }
 614
 615 set_weak(){
 616     value=$1
 617     shift
 618     for var; do
 619         eval : \${$var:=$value}
 620     done
 621 }
 622
 623 sanitize_var_name(){
 624     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 625 }
 626
 627 set_sanitized(){
 628     var=$1
 629     shift
 630     eval $(sanitize_var_name "$var")='$*'
 631 }
 632
 633 get_sanitized(){
 634     eval echo \$$(sanitize_var_name "$1")
 635 }
 636
 637 pushvar(){
 638     for pvar in $*; do
 639         eval level=\${${pvar}_level:=0}
 640         eval ${pvar}_${level}="\$$pvar"
 641         eval ${pvar}_level=$(($level+1))
 642     done
 643 }
 644
 645 popvar(){
 646     for pvar in $*; do
 647         eval level=\${${pvar}_level:-0}
 648         test $level = 0 && continue
 649         eval level=$(($level-1))
 650         eval $pvar="\${${pvar}_${level}}"
 651         eval ${pvar}_level=$level
 652         eval unset ${pvar}_${level}
 653     done
 654 }
 655
 656 request(){
 657     for var in $*; do
 658         eval ${var}_requested=yes
 659         eval $var=
 660     done
 661 }
 662
 663 warn_if_gets_disabled(){
 664     for var in $*; do
 665         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 666     done
 667 }
 668
 669 enable(){
 670     set_all yes $*
 671 }
 672
 673 disable(){
 674     set_all no $*
 675 }
 676
 677 disable_with_reason(){
 678     disable $1
 679     eval "${1}_disable_reason=\"$2\""
 680     if requested $1; then
 681         die "ERROR: $1 requested, but $2"
 682     fi
 683 }
 684
 685 enable_weak(){
 686     set_weak yes $*
 687 }
 688
 689 disable_weak(){
 690     set_weak no $*
 691 }
 692
 693 enable_sanitized(){
 694     for var; do
 695         enable $(sanitize_var_name $var)
 696     done
 697 }
 698
 699 disable_sanitized(){
 700     for var; do
 701         disable $(sanitize_var_name $var)
 702     done
 703 }
 704
 705 do_enable_deep(){
 706     for var; do
 707         enabled $var && continue
 708         set -- $var
 709         eval enable_deep \$${var}_select
 710         var=$1
 711         eval enable_deep_weak \$${var}_suggest
 712     done
 713 }
 714
 715 enable_deep(){
 716     do_enable_deep $*
 717     enable $*
 718 }
 719
 720 enable_deep_weak(){
 721     for var; do
 722         disabled $var && continue
 723         set -- $var
 724         do_enable_deep $var
 725         var=$1
 726         enable_weak $var
 727     done
 728 }
 729
 730 requested(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}_requested" $op "xyes"
 733 }
 734
 735 enabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xyes"
 738 }
 739
 740 disabled(){
 741     test "${1#!}" = "$1" && op="=" || op="!="
 742     eval test "x\$${1#!}" $op "xno"
 743 }
 744
 745 enabled_all(){
 746     for opt; do
 747         enabled $opt || return 1
 748     done
 749 }
 750
 751 disabled_all(){
 752     for opt; do
 753         disabled $opt || return 1
 754     done
 755 }
 756
 757 enabled_any(){
 758     for opt; do
 759         enabled $opt && return 0
 760     done
 761 }
 762
 763 disabled_any(){
 764     for opt; do
 765         disabled $opt && return 0
 766     done
 767     return 1
 768 }
 769
 770 set_default(){
 771     for opt; do
 772         eval : \${$opt:=\$${opt}_default}
 773     done
 774 }
 775
 776 is_in(){
 777     value=$1
 778     shift
 779     for var in $*; do
 780         [ $var = $value ] && return 0
 781     done
 782     return 1
 783 }
 784
 785 # The cfg loop is very hot (several thousands iterations), and in bash also
 786 # potentialy quite slow. Try to abort the iterations early, preferably without
 787 # calling functions. 70%+ of the time cfg is already done or without deps.
 788 check_deps(){
 789     for cfg; do
 790         eval [ x\$${cfg}_checking = xdone ] && continue
 791         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 792
 793         eval "
 794         dep_all=\$${cfg}_deps
 795         dep_any=\$${cfg}_deps_any
 796         dep_con=\$${cfg}_conflict
 797         dep_sel=\$${cfg}_select
 798         dep_sgs=\$${cfg}_suggest
 799         dep_ifa=\$${cfg}_if
 800         dep_ifn=\$${cfg}_if_any
 801         "
 802
 803         # most of the time here $cfg has no deps - avoid costly no-op work
 804         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 805             eval ${cfg}_checking=inprogress
 806
 807             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 808             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 809             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 810
 811             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 812             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 813             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 814             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 815             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 816             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 817
 818             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 819
 820             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 821                 # filter out library deps, these do not belong in extralibs
 822                 is_in $dep $LIBRARY_LIST && continue
 823                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 824             done
 825         fi
 826
 827         eval ${cfg}_checking=done
 828     done
 829 }
 830
 831 print_config(){
 832     pfx=$1
 833     files=$2
 834     shift 2
 835     map 'eval echo "$v \${$v:-no}"' "$@" |
 836     awk "BEGIN { split(\"$files\", files) }
 837         {
 838             c = \"$pfx\" toupper(\$1);
 839             v = \$2;
 840             sub(/yes/, 1, v);
 841             sub(/no/,  0, v);
 842             for (f in files) {
 843                 file = files[f];
 844                 if (file ~ /\\.h\$/) {
 845                     printf(\"#define %s %d\\n\", c, v) >>file;
 846                 } else if (file ~ /\\.asm\$/) {
 847                     printf(\"%%define %s %d\\n\", c, v) >>file;
 848                 } else if (file ~ /\\.mak\$/) {
 849                     n = -v ? \"\" : \"!\";
 850                     printf(\"%s%s=yes\\n\", n, c) >>file;
 851                 } else if (file ~ /\\.texi\$/) {
 852                     pre = -v ? \"\" : \"@c \";
 853                     yesno = \$2;
 854                     c2 = tolower(c);
 855                     gsub(/_/, \"-\", c2);
 856                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 857                 }
 858             }
 859         }"
 860 }
 861
 862 print_enabled(){
 863     suf=$1
 864     shift
 865     for v; do
 866         enabled $v && printf "%s\n" ${v%$suf}
 867     done
 868 }
 869
 870 append(){
 871     var=$1
 872     shift
 873     eval "$var=\"\$$var $*\""
 874 }
 875
 876 prepend(){
 877     var=$1
 878     shift
 879     eval "$var=\"$* \$$var\""
 880 }
 881
 882 reverse () {
 883     eval '
 884         reverse_out=
 885         for v in $'$1'; do
 886             reverse_out="$v $reverse_out"
 887         done
 888         '$1'=$reverse_out
 889     '
 890 }
 891
 892 # keeps the last occurence of each non-unique item
 893 unique(){
 894     unique_out=
 895     eval unique_in=\$$1
 896     reverse unique_in
 897     for v in $unique_in; do
 898         # " $unique_out" +space such that every item is surrounded with spaces
 899         case " $unique_out" in *" $v "*) continue; esac  # already in list
 900         unique_out="$unique_out$v "
 901     done
 902     reverse unique_out
 903     eval $1=\$unique_out
 904 }
 905
 906 resolve(){
 907     resolve_out=
 908     eval resolve_in=\$$1
 909     for v in $resolve_in; do
 910         eval 'resolve_out="$resolve_out$'$v' "'
 911     done
 912     eval $1=\$resolve_out
 913 }
 914
 915 add_cppflags(){
 916     append CPPFLAGS "$@"
 917 }
 918
 919 add_cflags(){
 920     append CFLAGS $($cflags_filter "$@")
 921 }
 922
 923 add_cflags_headers(){
 924     append CFLAGS_HEADERS $($cflags_filter "$@")
 925 }
 926
 927 add_cxxflags(){
 928     append CXXFLAGS $($cflags_filter "$@")
 929 }
 930
 931 add_objcflags(){
 932     append OBJCFLAGS $($objcflags_filter "$@")
 933 }
 934
 935 add_asflags(){
 936     append ASFLAGS $($asflags_filter "$@")
 937 }
 938
 939 add_ldflags(){
 940     append LDFLAGS $($ldflags_filter "$@")
 941 }
 942
 943 add_ldexeflags(){
 944     append LDEXEFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldsoflags(){
 948     append LDSOFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_extralibs(){
 952     prepend extralibs $($ldflags_filter "$@")
 953 }
 954
 955 add_stripflags(){
 956     append ASMSTRIPFLAGS "$@"
 957 }
 958
 959 add_host_cppflags(){
 960     append host_cppflags "$@"
 961 }
 962
 963 add_host_cflags(){
 964     append host_cflags $($host_cflags_filter "$@")
 965 }
 966
 967 add_host_ldflags(){
 968     append host_ldflags $($host_ldflags_filter "$@")
 969 }
 970
 971 add_compat(){
 972     append compat_objs $1
 973     shift
 974     map 'add_cppflags -D$v' "$@"
 975 }
 976
 977 test_cmd(){
 978     log "$@"
 979     "$@" >> $logfile 2>&1
 980 }
 981
 982 test_stat(){
 983     log test_stat "$@"
 984     stat "$1" >> $logfile 2>&1
 985 }
 986
 987 cc_e(){
 988     eval printf '%s\\n' $CC_E
 989 }
 990
 991 cc_o(){
 992     eval printf '%s\\n' $CC_O
 993 }
 994
 995 as_o(){
 996     eval printf '%s\\n' $AS_O
 997 }
 998
 999 x86asm_o(){
1000     eval printf '%s\\n' $X86ASM_O
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 hostcc_e(){
1008     eval printf '%s\\n' $HOSTCC_E
1009 }
1010
1011 hostcc_o(){
1012     eval printf '%s\\n' $HOSTCC_O
1013 }
1014
1015 nvcc_o(){
1016     eval printf '%s\\n' $NVCC_O
1017 }
1018
1019 test_cc(){
1020     log test_cc "$@"
1021     cat > $TMPC
1022     log_file $TMPC
1023     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1024 }
1025
1026 test_cxx(){
1027     log test_cxx "$@"
1028     cat > $TMPCPP
1029     log_file $TMPCPP
1030     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1031 }
1032
1033 test_objcc(){
1034     log test_objcc "$@"
1035     cat > $TMPM
1036     log_file $TMPM
1037     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1038 }
1039
1040 test_nvcc(){
1041     log test_nvcc "$@"
1042     cat > $TMPCU
1043     log_file $TMPCU
1044     tmpcu_=$TMPCU
1045     tmpo_=$TMPO
1046     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1047     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1048 }
1049
1050 check_nvcc() {
1051     log check_nvcc "$@"
1052     name=$1
1053     shift 1
1054     disabled $name && return
1055     disable $name
1056     test_nvcc "$@" <<EOF && enable $name
1057 extern "C" {
1058     __global__ void hello(unsigned char *data) {}
1059 }
1060 EOF
1061 }
1062
1063 test_cpp(){
1064     log test_cpp "$@"
1065     cat > $TMPC
1066     log_file $TMPC
1067     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1068 }
1069
1070 test_as(){
1071     log test_as "$@"
1072     cat > $TMPS
1073     log_file $TMPS
1074     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1075 }
1076
1077 test_x86asm(){
1078     log test_x86asm "$@"
1079     echo "$1" > $TMPASM
1080     log_file $TMPASM
1081     shift
1082     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1083 }
1084
1085 check_cmd(){
1086     log check_cmd "$@"
1087     cmd=$1
1088     disabled $cmd && return
1089     disable $cmd
1090     test_cmd $@ && enable $cmd
1091 }
1092
1093 check_as(){
1094     log check_as "$@"
1095     name=$1
1096     code=$2
1097     shift 2
1098     disable $name
1099     test_as $@ <<EOF && enable $name
1100 $code
1101 EOF
1102 }
1103
1104 check_inline_asm(){
1105     log check_inline_asm "$@"
1106     name="$1"
1107     code="$2"
1108     shift 2
1109     disable $name
1110     test_cc "$@" <<EOF && enable $name
1111 void foo(void){ __asm__ volatile($code); }
1112 EOF
1113 }
1114
1115 check_inline_asm_flags(){
1116     log check_inline_asm_flags "$@"
1117     name="$1"
1118     code="$2"
1119     flags=''
1120     shift 2
1121     while [ "$1" != "" ]; do
1122       append flags $1
1123       shift
1124     done;
1125     disable $name
1126     cat > $TMPC <<EOF
1127 void foo(void){ __asm__ volatile($code); }
1128 EOF
1129     log_file $TMPC
1130     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1131     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1132 }
1133
1134 check_insn(){
1135     log check_insn "$@"
1136     check_inline_asm ${1}_inline "\"$2\""
1137     check_as ${1}_external "$2"
1138 }
1139
1140 check_x86asm(){
1141     log check_x86asm "$@"
1142     name=$1
1143     shift
1144     disable $name
1145     test_x86asm "$@" && enable $name
1146 }
1147
1148 test_ld(){
1149     log test_ld "$@"
1150     type=$1
1151     shift 1
1152     flags=$(filter_out '-l*|*.so' $@)
1153     libs=$(filter '-l*|*.so' $@)
1154     test_$type $($cflags_filter $flags) || return
1155     flags=$($ldflags_filter $flags)
1156     libs=$($ldflags_filter $libs)
1157     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1158 }
1159
1160 check_ld(){
1161     log check_ld "$@"
1162     type=$1
1163     name=$2
1164     shift 2
1165     disable $name
1166     test_ld $type $@ && enable $name
1167 }
1168
1169 print_include(){
1170     hdr=$1
1171     test "${hdr%.h}" = "${hdr}" &&
1172         echo "#include $hdr"    ||
1173         echo "#include <$hdr>"
1174 }
1175
1176 test_code(){
1177     log test_code "$@"
1178     check=$1
1179     headers=$2
1180     code=$3
1181     shift 3
1182     {
1183         for hdr in $headers; do
1184             print_include $hdr
1185         done
1186         echo "int main(void) { $code; return 0; }"
1187     } | test_$check "$@"
1188 }
1189
1190 check_cppflags(){
1191     log check_cppflags "$@"
1192     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1193 #include <stdlib.h>
1194 EOF
1195 }
1196
1197 test_cflags(){
1198     log test_cflags "$@"
1199     set -- $($cflags_filter "$@")
1200     test_cc "$@" <<EOF
1201 int x;
1202 EOF
1203 }
1204
1205 check_cflags(){
1206     log check_cflags "$@"
1207     test_cflags "$@" && add_cflags "$@"
1208 }
1209
1210 check_cxxflags(){
1211     log check_cxxflags "$@"
1212     set -- $($cflags_filter "$@")
1213     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1214 int x;
1215 EOF
1216 }
1217
1218 test_objcflags(){
1219     log test_objcflags "$@"
1220     set -- $($objcflags_filter "$@")
1221     test_objcc "$@" <<EOF
1222 int x;
1223 EOF
1224 }
1225
1226 check_objcflags(){
1227     log check_objcflags "$@"
1228     test_objcflags "$@" && add_objcflags "$@"
1229 }
1230
1231 test_ldflags(){
1232     log test_ldflags "$@"
1233     set -- $($ldflags_filter "$@")
1234     test_ld "cc" "$@" <<EOF
1235 int main(void){ return 0; }
1236 EOF
1237 }
1238
1239 check_ldflags(){
1240     log check_ldflags "$@"
1241     test_ldflags "$@" && add_ldflags "$@"
1242 }
1243
1244 test_stripflags(){
1245     log test_stripflags "$@"
1246     # call test_cc to get a fresh TMPO
1247     test_cc <<EOF
1248 int main(void) { return 0; }
1249 EOF
1250     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1251 }
1252
1253 check_stripflags(){
1254     log check_stripflags "$@"
1255     test_stripflags "$@" && add_stripflags "$@"
1256 }
1257
1258 check_headers(){
1259     log check_headers "$@"
1260     headers=$1
1261     shift
1262     disable_sanitized $headers
1263     {
1264         for hdr in $headers; do
1265             print_include $hdr
1266         done
1267         echo "int x;"
1268     } | test_cpp "$@" && enable_sanitized $headers
1269 }
1270
1271 check_header_objcc(){
1272     log check_header_objcc "$@"
1273     rm -f -- "$TMPO"
1274     header=$1
1275     shift
1276     disable_sanitized $header
1277     {
1278        echo "#include <$header>"
1279        echo "int main(void) { return 0; }"
1280     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1281 }
1282
1283 check_apple_framework(){
1284     log check_apple_framework "$@"
1285     framework="$1"
1286     name="$(tolower $framework)"
1287     header="${framework}/${framework}.h"
1288     disable $name
1289     check_header_objcc $header &&
1290         enable $name && eval ${name}_extralibs='"-framework $framework"'
1291 }
1292
1293 check_func(){
1294     log check_func "$@"
1295     func=$1
1296     shift
1297     disable $func
1298     test_ld "cc" "$@" <<EOF && enable $func
1299 extern int $func();
1300 int main(void){ $func(); }
1301 EOF
1302 }
1303
1304 check_complexfunc(){
1305     log check_complexfunc "$@"
1306     func=$1
1307     narg=$2
1308     shift 2
1309     test $narg = 2 && args="f, g" || args="f * I"
1310     disable $func
1311     test_ld "cc" "$@" <<EOF && enable $func
1312 #include <complex.h>
1313 #include <math.h>
1314 float foo(complex float f, complex float g) { return $func($args); }
1315 int main(void){ return (int) foo; }
1316 EOF
1317 }
1318
1319 check_mathfunc(){
1320     log check_mathfunc "$@"
1321     func=$1
1322     narg=$2
1323     shift 2
1324     test $narg = 2 && args="f, g" || args="f"
1325     disable $func
1326     test_ld "cc" "$@" <<EOF && enable $func
1327 #include <math.h>
1328 float foo(float f, float g) { return $func($args); }
1329 int main(void){ return (int) foo; }
1330 EOF
1331 }
1332
1333 check_func_headers(){
1334     log check_func_headers "$@"
1335     headers=$1
1336     funcs=$2
1337     shift 2
1338     {
1339         for hdr in $headers; do
1340             print_include $hdr
1341         done
1342         echo "#include <stdint.h>"
1343         for func in $funcs; do
1344             echo "long check_$func(void) { return (long) $func; }"
1345         done
1346         echo "int main(void) { int ret = 0;"
1347         # LTO could optimize out the test functions without this
1348         for func in $funcs; do
1349             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1350         done
1351         echo "return ret; }"
1352     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1353 }
1354
1355 check_class_headers_cpp(){
1356     log check_class_headers_cpp "$@"
1357     headers=$1
1358     classes=$2
1359     shift 2
1360     {
1361         for hdr in $headers; do
1362             echo "#include <$hdr>"
1363         done
1364         echo "int main(void) { "
1365         i=1
1366         for class in $classes; do
1367             echo "$class obj$i;"
1368             i=$(expr $i + 1)
1369         done
1370         echo "return 0; }"
1371     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1372 }
1373
1374 test_cpp_condition(){
1375     log test_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     test_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 check_cpp_condition(){
1388     log check_cpp_condition "$@"
1389     name=$1
1390     shift 1
1391     disable $name
1392     test_cpp_condition "$@" && enable $name
1393 }
1394
1395 test_cflags_cc(){
1396     log test_cflags_cc "$@"
1397     flags=$1
1398     header=$2
1399     condition=$3
1400     shift 3
1401     set -- $($cflags_filter "$flags")
1402     test_cc "$@" <<EOF
1403 #include <$header>
1404 #if !($condition)
1405 #error "unsatisfied condition: $condition"
1406 #endif
1407 EOF
1408 }
1409
1410 check_lib(){
1411     log check_lib "$@"
1412     name="$1"
1413     headers="$2"
1414     funcs="$3"
1415     shift 3
1416     disable $name
1417     check_func_headers "$headers" "$funcs" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 check_lib_cpp(){
1422     log check_lib_cpp "$@"
1423     name="$1"
1424     headers="$2"
1425     classes="$3"
1426     shift 3
1427     disable $name
1428     check_class_headers_cpp "$headers" "$classes" "$@" &&
1429         enable $name && eval ${name}_extralibs="\$@"
1430 }
1431
1432 test_pkg_config(){
1433     log test_pkg_config "$@"
1434     name="$1"
1435     pkg_version="$2"
1436     pkg="${2%% *}"
1437     headers="$3"
1438     funcs="$4"
1439     shift 4
1440     disable $name
1441     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1442     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1443     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1444     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1445         enable $name &&
1446         set_sanitized "${name}_cflags"    $pkg_cflags &&
1447         set_sanitized "${name}_extralibs" $pkg_libs
1448 }
1449
1450 check_pkg_config(){
1451     log check_pkg_config "$@"
1452     name="$1"
1453     test_pkg_config "$@" &&
1454         eval add_cflags \$${name}_cflags
1455 }
1456
1457 test_exec(){
1458     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1459 }
1460
1461 check_exec_crash(){
1462     log check_exec_crash "$@"
1463     code=$(cat)
1464
1465     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1466     # are safe but may not be available everywhere.  Thus we use
1467     # raise(SIGTERM) instead.  The check is run in a subshell so we
1468     # can redirect the "Terminated" message from the shell.  SIGBUS
1469     # is not defined by standard C so it is used conditionally.
1470
1471     (test_exec "$@") >> $logfile 2>&1 <<EOF
1472 #include <signal.h>
1473 static void sighandler(int sig){
1474     raise(SIGTERM);
1475 }
1476 int foo(void){
1477     $code
1478 }
1479 int (*func_ptr)(void) = foo;
1480 int main(void){
1481     signal(SIGILL, sighandler);
1482     signal(SIGFPE, sighandler);
1483     signal(SIGSEGV, sighandler);
1484 #ifdef SIGBUS
1485     signal(SIGBUS, sighandler);
1486 #endif
1487     return func_ptr();
1488 }
1489 EOF
1490 }
1491
1492 check_type(){
1493     log check_type "$@"
1494     headers=$1
1495     type=$2
1496     shift 2
1497     disable_sanitized "$type"
1498     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1499 }
1500
1501 check_struct(){
1502     log check_struct "$@"
1503     headers=$1
1504     struct=$2
1505     member=$3
1506     shift 3
1507     disable_sanitized "${struct}_${member}"
1508     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1509         enable_sanitized "${struct}_${member}"
1510 }
1511
1512 check_builtin(){
1513     log check_builtin "$@"
1514     name=$1
1515     headers=$2
1516     builtin=$3
1517     shift 3
1518     disable "$name"
1519     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1520 }
1521
1522 check_compile_assert(){
1523     log check_compile_assert "$@"
1524     name=$1
1525     headers=$2
1526     condition=$3
1527     shift 3
1528     disable "$name"
1529     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1530 }
1531
1532 check_cc(){
1533     log check_cc "$@"
1534     name=$1
1535     shift
1536     disable "$name"
1537     test_code cc "$@" && enable "$name"
1538 }
1539
1540 require(){
1541     log require "$@"
1542     name_version="$1"
1543     name="${1%% *}"
1544     shift
1545     check_lib $name "$@" || die "ERROR: $name_version not found"
1546 }
1547
1548 require_cc(){
1549     log require_cc "$@"
1550     name="$1"
1551     check_cc "$@" || die "ERROR: $name failed"
1552 }
1553
1554 require_cpp(){
1555     log require_cpp "$@"
1556     name_version="$1"
1557     name="${1%% *}"
1558     shift
1559     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1560 }
1561
1562 require_headers(){
1563     log require_headers "$@"
1564     headers="$1"
1565     check_headers "$@" || die "ERROR: $headers not found"
1566 }
1567
1568 require_cpp_condition(){
1569     log require_cpp_condition "$@"
1570     condition="$3"
1571     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1572 }
1573
1574 require_pkg_config(){
1575     log require_pkg_config "$@"
1576     pkg_version="$2"
1577     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1578 }
1579
1580 test_host_cc(){
1581     log test_host_cc "$@"
1582     cat > $TMPC
1583     log_file $TMPC
1584     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1585 }
1586
1587 test_host_cpp(){
1588     log test_host_cpp "$@"
1589     cat > $TMPC
1590     log_file $TMPC
1591     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1592 }
1593
1594 check_host_cppflags(){
1595     log check_host_cppflags "$@"
1596     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1597 #include <stdlib.h>
1598 EOF
1599 }
1600
1601 check_host_cflags(){
1602     log check_host_cflags "$@"
1603     set -- $($host_cflags_filter "$@")
1604     test_host_cc "$@" <<EOF && append host_cflags "$@"
1605 int x;
1606 EOF
1607 }
1608
1609 test_host_cpp_condition(){
1610     log test_host_cpp_condition "$@"
1611     header=$1
1612     condition=$2
1613     shift 2
1614     test_host_cpp "$@" <<EOF
1615 #include <$header>
1616 #if !($condition)
1617 #error "unsatisfied condition: $condition"
1618 #endif
1619 EOF
1620 }
1621
1622 check_host_cpp_condition(){
1623     log check_host_cpp_condition "$@"
1624     name=$1
1625     shift 1
1626     disable $name
1627     test_host_cpp_condition "$@" && enable $name
1628 }
1629
1630 cp_if_changed(){
1631     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1632     mkdir -p "$(dirname $2)"
1633     cp -f "$1" "$2"
1634 }
1635
1636 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1637 # system-dependent things.
1638
1639 AVCODEC_COMPONENTS="
1640     bsfs
1641     decoders
1642     encoders
1643     hwaccels
1644     parsers
1645 "
1646
1647 AVDEVICE_COMPONENTS="
1648     indevs
1649     outdevs
1650 "
1651
1652 AVFILTER_COMPONENTS="
1653     filters
1654 "
1655
1656 AVFORMAT_COMPONENTS="
1657     demuxers
1658     muxers
1659     protocols
1660 "
1661
1662 COMPONENT_LIST="
1663     $AVCODEC_COMPONENTS
1664     $AVDEVICE_COMPONENTS
1665     $AVFILTER_COMPONENTS
1666     $AVFORMAT_COMPONENTS
1667 "
1668
1669 EXAMPLE_LIST="
1670     avio_list_dir_example
1671     avio_reading_example
1672     decode_audio_example
1673     decode_video_example
1674     demuxing_decoding_example
1675     encode_audio_example
1676     encode_video_example
1677     extract_mvs_example
1678     filter_audio_example
1679     filtering_audio_example
1680     filtering_video_example
1681     http_multiclient_example
1682     hw_decode_example
1683     metadata_example
1684     muxing_example
1685     qsvdec_example
1686     remuxing_example
1687     resampling_audio_example
1688     scaling_video_example
1689     transcode_aac_example
1690     transcoding_example
1691     vaapi_encode_example
1692     vaapi_transcode_example
1693 "
1694
1695 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1696     alsa
1697     appkit
1698     avfoundation
1699     bzlib
1700     coreimage
1701     iconv
1702     libxcb
1703     libxcb_shm
1704     libxcb_shape
1705     libxcb_xfixes
1706     lzma
1707     schannel
1708     sdl2
1709     securetransport
1710     sndio
1711     xlib
1712     zlib
1713 "
1714
1715 EXTERNAL_LIBRARY_GPL_LIST="
1716     avisynth
1717     frei0r
1718     libcdio
1719     libdavs2
1720     librubberband
1721     libvidstab
1722     libx264
1723     libx265
1724     libxavs
1725     libxavs2
1726     libxvid
1727 "
1728
1729 EXTERNAL_LIBRARY_NONFREE_LIST="
1730     decklink
1731     libfdk_aac
1732     openssl
1733     libtls
1734 "
1735
1736 EXTERNAL_LIBRARY_VERSION3_LIST="
1737     gmp
1738     libaribb24
1739     liblensfun
1740     libopencore_amrnb
1741     libopencore_amrwb
1742     libvmaf
1743     libvo_amrwbenc
1744     mbedtls
1745     rkmpp
1746 "
1747
1748 EXTERNAL_LIBRARY_GPLV3_LIST="
1749     libsmbclient
1750 "
1751
1752 EXTERNAL_LIBRARY_LIST="
1753     $EXTERNAL_LIBRARY_GPL_LIST
1754     $EXTERNAL_LIBRARY_NONFREE_LIST
1755     $EXTERNAL_LIBRARY_VERSION3_LIST
1756     $EXTERNAL_LIBRARY_GPLV3_LIST
1757     chromaprint
1758     gcrypt
1759     gnutls
1760     jni
1761     ladspa
1762     libaom
1763     libass
1764     libbluray
1765     libbs2b
1766     libcaca
1767     libcelt
1768     libcodec2
1769     libdav1d
1770     libdc1394
1771     libdrm
1772     libflite
1773     libfontconfig
1774     libfreetype
1775     libfribidi
1776     libglslang
1777     libgme
1778     libgsm
1779     libiec61883
1780     libilbc
1781     libjack
1782     libklvanc
1783     libkvazaar
1784     libmodplug
1785     libmp3lame
1786     libmysofa
1787     libopencv
1788     libopenh264
1789     libopenjpeg
1790     libopenmpt
1791     libopus
1792     libpulse
1793     librabbitmq
1794     librav1e
1795     librsvg
1796     librtmp
1797     libshine
1798     libsmbclient
1799     libsnappy
1800     libsoxr
1801     libspeex
1802     libsrt
1803     libssh
1804     libtensorflow
1805     libtesseract
1806     libtheora
1807     libtwolame
1808     libv4l2
1809     libvorbis
1810     libvpx
1811     libwavpack
1812     libwebp
1813     libxml2
1814     libzimg
1815     libzmq
1816     libzvbi
1817     lv2
1818     mediacodec
1819     openal
1820     opengl
1821     pocketsphinx
1822     vapoursynth
1823 "
1824
1825 HWACCEL_AUTODETECT_LIBRARY_LIST="
1826     amf
1827     audiotoolbox
1828     crystalhd
1829     cuda
1830     cuda_llvm
1831     cuvid
1832     d3d11va
1833     dxva2
1834     ffnvcodec
1835     nvdec
1836     nvenc
1837     vaapi
1838     vdpau
1839     videotoolbox
1840     v4l2_m2m
1841     xvmc
1842 "
1843
1844 # catchall list of things that require external libs to link
1845 EXTRALIBS_LIST="
1846     cpu_init
1847     cws2fws
1848 "
1849
1850 HWACCEL_LIBRARY_NONFREE_LIST="
1851     cuda_nvcc
1852     cuda_sdk
1853     libnpp
1854 "
1855
1856 HWACCEL_LIBRARY_LIST="
1857     $HWACCEL_LIBRARY_NONFREE_LIST
1858     libmfx
1859     mmal
1860     omx
1861     opencl
1862     vulkan
1863 "
1864
1865 DOCUMENT_LIST="
1866     doc
1867     htmlpages
1868     manpages
1869     podpages
1870     txtpages
1871 "
1872
1873 FEATURE_LIST="
1874     ftrapv
1875     gray
1876     hardcoded_tables
1877     omx_rpi
1878     runtime_cpudetect
1879     safe_bitstream_reader
1880     shared
1881     small
1882     static
1883     swscale_alpha
1884 "
1885
1886 # this list should be kept in linking order
1887 LIBRARY_LIST="
1888     avdevice
1889     avfilter
1890     swscale
1891     postproc
1892     avformat
1893     avcodec
1894     swresample
1895     avresample
1896     avutil
1897 "
1898
1899 LICENSE_LIST="
1900     gpl
1901     nonfree
1902     version3
1903 "
1904
1905 PROGRAM_LIST="
1906     ffplay
1907     ffprobe
1908     ffmpeg
1909 "
1910
1911 SUBSYSTEM_LIST="
1912     dct
1913     dwt
1914     error_resilience
1915     faan
1916     fast_unaligned
1917     fft
1918     lsp
1919     lzo
1920     mdct
1921     pixelutils
1922     network
1923     rdft
1924 "
1925
1926 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1927 CONFIG_LIST="
1928     $DOCUMENT_LIST
1929     $EXAMPLE_LIST
1930     $EXTERNAL_LIBRARY_LIST
1931     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1932     $HWACCEL_LIBRARY_LIST
1933     $HWACCEL_AUTODETECT_LIBRARY_LIST
1934     $FEATURE_LIST
1935     $LICENSE_LIST
1936     $LIBRARY_LIST
1937     $PROGRAM_LIST
1938     $SUBSYSTEM_LIST
1939     autodetect
1940     fontconfig
1941     large_tests
1942     linux_perf
1943     memory_poisoning
1944     neon_clobber_test
1945     ossfuzz
1946     pic
1947     thumb
1948     valgrind_backtrace
1949     xmm_clobber_test
1950     $COMPONENT_LIST
1951 "
1952
1953 THREADS_LIST="
1954     pthreads
1955     os2threads
1956     w32threads
1957 "
1958
1959 ATOMICS_LIST="
1960     atomics_gcc
1961     atomics_suncc
1962     atomics_win32
1963 "
1964
1965 AUTODETECT_LIBS="
1966     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1967     $HWACCEL_AUTODETECT_LIBRARY_LIST
1968     $THREADS_LIST
1969 "
1970
1971 ARCH_LIST="
1972     aarch64
1973     alpha
1974     arm
1975     avr32
1976     avr32_ap
1977     avr32_uc
1978     bfin
1979     ia64
1980     m68k
1981     mips
1982     mips64
1983     parisc
1984     ppc
1985     ppc64
1986     s390
1987     sh4
1988     sparc
1989     sparc64
1990     tilegx
1991     tilepro
1992     tomi
1993     x86
1994     x86_32
1995     x86_64
1996 "
1997
1998 ARCH_EXT_LIST_ARM="
1999     armv5te
2000     armv6
2001     armv6t2
2002     armv8
2003     neon
2004     vfp
2005     vfpv3
2006     setend
2007 "
2008
2009 ARCH_EXT_LIST_MIPS="
2010     mipsfpu
2011     mips32r2
2012     mips32r5
2013     mips64r2
2014     mips32r6
2015     mips64r6
2016     mipsdsp
2017     mipsdspr2
2018     msa
2019     msa2
2020 "
2021
2022 ARCH_EXT_LIST_LOONGSON="
2023     loongson2
2024     loongson3
2025     mmi
2026 "
2027
2028 ARCH_EXT_LIST_X86_SIMD="
2029     aesni
2030     amd3dnow
2031     amd3dnowext
2032     avx
2033     avx2
2034     avx512
2035     fma3
2036     fma4
2037     mmx
2038     mmxext
2039     sse
2040     sse2
2041     sse3
2042     sse4
2043     sse42
2044     ssse3
2045     xop
2046 "
2047
2048 ARCH_EXT_LIST_PPC="
2049     altivec
2050     dcbzl
2051     ldbrx
2052     power8
2053     ppc4xx
2054     vsx
2055 "
2056
2057 ARCH_EXT_LIST_X86="
2058     $ARCH_EXT_LIST_X86_SIMD
2059     cpunop
2060     i686
2061 "
2062
2063 ARCH_EXT_LIST="
2064     $ARCH_EXT_LIST_ARM
2065     $ARCH_EXT_LIST_PPC
2066     $ARCH_EXT_LIST_X86
2067     $ARCH_EXT_LIST_MIPS
2068     $ARCH_EXT_LIST_LOONGSON
2069 "
2070
2071 ARCH_FEATURES="
2072     aligned_stack
2073     fast_64bit
2074     fast_clz
2075     fast_cmov
2076     local_aligned
2077     simd_align_16
2078     simd_align_32
2079     simd_align_64
2080 "
2081
2082 BUILTIN_LIST="
2083     atomic_cas_ptr
2084     machine_rw_barrier
2085     MemoryBarrier
2086     mm_empty
2087     rdtsc
2088     sem_timedwait
2089     sync_val_compare_and_swap
2090 "
2091 HAVE_LIST_CMDLINE="
2092     inline_asm
2093     symver
2094     x86asm
2095 "
2096
2097 HAVE_LIST_PUB="
2098     bigendian
2099     fast_unaligned
2100 "
2101
2102 HEADERS_LIST="
2103     arpa_inet_h
2104     asm_types_h
2105     cdio_paranoia_h
2106     cdio_paranoia_paranoia_h
2107     cuda_h
2108     dispatch_dispatch_h
2109     dev_bktr_ioctl_bt848_h
2110     dev_bktr_ioctl_meteor_h
2111     dev_ic_bt8xx_h
2112     dev_video_bktr_ioctl_bt848_h
2113     dev_video_meteor_ioctl_meteor_h
2114     direct_h
2115     dirent_h
2116     dxgidebug_h
2117     dxva_h
2118     ES2_gl_h
2119     gsm_h
2120     io_h
2121     linux_perf_event_h
2122     machine_ioctl_bt848_h
2123     machine_ioctl_meteor_h
2124     malloc_h
2125     opencv2_core_core_c_h
2126     OpenGL_gl3_h
2127     poll_h
2128     sys_param_h
2129     sys_resource_h
2130     sys_select_h
2131     sys_soundcard_h
2132     sys_time_h
2133     sys_un_h
2134     sys_videoio_h
2135     termios_h
2136     udplite_h
2137     unistd_h
2138     valgrind_valgrind_h
2139     windows_h
2140     winsock2_h
2141 "
2142
2143 INTRINSICS_LIST="
2144     intrinsics_neon
2145 "
2146
2147 COMPLEX_FUNCS="
2148     cabs
2149     cexp
2150 "
2151
2152 MATH_FUNCS="
2153     atanf
2154     atan2f
2155     cbrt
2156     cbrtf
2157     copysign
2158     cosf
2159     erf
2160     exp2
2161     exp2f
2162     expf
2163     hypot
2164     isfinite
2165     isinf
2166     isnan
2167     ldexpf
2168     llrint
2169     llrintf
2170     log2
2171     log2f
2172     log10f
2173     lrint
2174     lrintf
2175     powf
2176     rint
2177     round
2178     roundf
2179     sinf
2180     trunc
2181     truncf
2182 "
2183
2184 SYSTEM_FEATURES="
2185     dos_paths
2186     libc_msvcrt
2187     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2188     section_data_rel_ro
2189     threads
2190     uwp
2191     winrt
2192 "
2193
2194 SYSTEM_FUNCS="
2195     access
2196     aligned_malloc
2197     arc4random
2198     clock_gettime
2199     closesocket
2200     CommandLineToArgvW
2201     fcntl
2202     getaddrinfo
2203     gethrtime
2204     getopt
2205     GetModuleHandle
2206     GetProcessAffinityMask
2207     GetProcessMemoryInfo
2208     GetProcessTimes
2209     getrusage
2210     GetStdHandle
2211     GetSystemTimeAsFileTime
2212     gettimeofday
2213     glob
2214     glXGetProcAddress
2215     gmtime_r
2216     inet_aton
2217     isatty
2218     kbhit
2219     localtime_r
2220     lstat
2221     lzo1x_999_compress
2222     mach_absolute_time
2223     MapViewOfFile
2224     memalign
2225     mkstemp
2226     mmap
2227     mprotect
2228     nanosleep
2229     PeekNamedPipe
2230     posix_memalign
2231     pthread_cancel
2232     sched_getaffinity
2233     SecItemImport
2234     SetConsoleTextAttribute
2235     SetConsoleCtrlHandler
2236     SetDllDirectory
2237     setmode
2238     setrlimit
2239     Sleep
2240     strerror_r
2241     sysconf
2242     sysctl
2243     usleep
2244     UTGetOSTypeFromString
2245     VirtualAlloc
2246     wglGetProcAddress
2247 "
2248
2249 SYSTEM_LIBRARIES="
2250     bcrypt
2251     vaapi_drm
2252     vaapi_x11
2253     vdpau_x11
2254 "
2255
2256 TOOLCHAIN_FEATURES="
2257     as_arch_directive
2258     as_dn_directive
2259     as_fpu_directive
2260     as_func
2261     as_object_arch
2262     asm_mod_q
2263     blocks_extension
2264     ebp_available
2265     ebx_available
2266     gnu_as
2267     gnu_windres
2268     ibm_asm
2269     inline_asm_direct_symbol_refs
2270     inline_asm_labels
2271     inline_asm_nonlocal_labels
2272     pragma_deprecated
2273     rsync_contimeout
2274     symver_asm_label
2275     symver_gnu_asm
2276     vfp_args
2277     xform_asm
2278     xmm_clobbers
2279 "
2280
2281 TYPES_LIST="
2282     kCMVideoCodecType_HEVC
2283     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2284     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2285     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2286     kCVImageBufferTransferFunction_Linear
2287     socklen_t
2288     struct_addrinfo
2289     struct_group_source_req
2290     struct_ip_mreq_source
2291     struct_ipv6_mreq
2292     struct_msghdr_msg_flags
2293     struct_pollfd
2294     struct_rusage_ru_maxrss
2295     struct_sctp_event_subscribe
2296     struct_sockaddr_in6
2297     struct_sockaddr_sa_len
2298     struct_sockaddr_storage
2299     struct_stat_st_mtim_tv_nsec
2300     struct_v4l2_frmivalenum_discrete
2301 "
2302
2303 HAVE_LIST="
2304     $ARCH_EXT_LIST
2305     $(add_suffix _external $ARCH_EXT_LIST)
2306     $(add_suffix _inline   $ARCH_EXT_LIST)
2307     $ARCH_FEATURES
2308     $BUILTIN_LIST
2309     $COMPLEX_FUNCS
2310     $HAVE_LIST_CMDLINE
2311     $HAVE_LIST_PUB
2312     $HEADERS_LIST
2313     $INTRINSICS_LIST
2314     $MATH_FUNCS
2315     $SYSTEM_FEATURES
2316     $SYSTEM_FUNCS
2317     $SYSTEM_LIBRARIES
2318     $THREADS_LIST
2319     $TOOLCHAIN_FEATURES
2320     $TYPES_LIST
2321     makeinfo
2322     makeinfo_html
2323     opencl_d3d11
2324     opencl_drm_arm
2325     opencl_drm_beignet
2326     opencl_dxva2
2327     opencl_vaapi_beignet
2328     opencl_vaapi_intel_media
2329     perl
2330     pod2man
2331     texi2html
2332 "
2333
2334 # options emitted with CONFIG_ prefix but not available on the command line
2335 CONFIG_EXTRA="
2336     aandcttables
2337     ac3dsp
2338     adts_header
2339     audio_frame_queue
2340     audiodsp
2341     blockdsp
2342     bswapdsp
2343     cabac
2344     cbs
2345     cbs_av1
2346     cbs_h264
2347     cbs_h265
2348     cbs_jpeg
2349     cbs_mpeg2
2350     cbs_vp9
2351     dirac_parse
2352     dnn
2353     dvprofile
2354     exif
2355     faandct
2356     faanidct
2357     fdctdsp
2358     flacdsp
2359     fmtconvert
2360     frame_thread_encoder
2361     g722dsp
2362     golomb
2363     gplv3
2364     h263dsp
2365     h264chroma
2366     h264dsp
2367     h264parse
2368     h264pred
2369     h264qpel
2370     hevcparse
2371     hpeldsp
2372     huffman
2373     huffyuvdsp
2374     huffyuvencdsp
2375     idctdsp
2376     iirfilter
2377     mdct15
2378     intrax8
2379     iso_media
2380     ividsp
2381     jpegtables
2382     lgplv3
2383     libx262
2384     llauddsp
2385     llviddsp
2386     llvidencdsp
2387     lpc
2388     lzf
2389     me_cmp
2390     mpeg_er
2391     mpegaudio
2392     mpegaudiodsp
2393     mpegaudioheader
2394     mpegvideo
2395     mpegvideoenc
2396     mss34dsp
2397     pixblockdsp
2398     qpeldsp
2399     qsv
2400     qsvdec
2401     qsvenc
2402     qsvvpp
2403     rangecoder
2404     riffdec
2405     riffenc
2406     rtpdec
2407     rtpenc_chain
2408     rv34dsp
2409     scene_sad
2410     sinewin
2411     snappy
2412     srtp
2413     startcode
2414     texturedsp
2415     texturedspenc
2416     tpeldsp
2417     vaapi_1
2418     vaapi_encode
2419     vc1dsp
2420     videodsp
2421     vp3dsp
2422     vp56dsp
2423     vp8dsp
2424     wma_freqs
2425     wmv2dsp
2426 "
2427
2428 CMDLINE_SELECT="
2429     $ARCH_EXT_LIST
2430     $CONFIG_LIST
2431     $HAVE_LIST_CMDLINE
2432     $THREADS_LIST
2433     asm
2434     cross_compile
2435     debug
2436     extra_warnings
2437     logging
2438     lto
2439     optimizations
2440     rpath
2441     stripping
2442 "
2443
2444 PATHS_LIST="
2445     bindir
2446     datadir
2447     docdir
2448     incdir
2449     libdir
2450     mandir
2451     pkgconfigdir
2452     prefix
2453     shlibdir
2454     install_name_dir
2455 "
2456
2457 CMDLINE_SET="
2458     $PATHS_LIST
2459     ar
2460     arch
2461     as
2462     assert_level
2463     build_suffix
2464     cc
2465     objcc
2466     cpu
2467     cross_prefix
2468     custom_allocator
2469     cxx
2470     dep_cc
2471     doxygen
2472     env
2473     extra_version
2474     gas
2475     host_cc
2476     host_cflags
2477     host_extralibs
2478     host_ld
2479     host_ldflags
2480     host_os
2481     ignore_tests
2482     install
2483     ld
2484     ln_s
2485     logfile
2486     malloc_prefix
2487     nm
2488     optflags
2489     nvcc
2490     nvccflags
2491     pkg_config
2492     pkg_config_flags
2493     progs_suffix
2494     random_seed
2495     ranlib
2496     samples
2497     strip
2498     sws_max_filter_size
2499     sysinclude
2500     sysroot
2501     target_exec
2502     target_os
2503     target_path
2504     target_samples
2505     tempprefix
2506     toolchain
2507     valgrind
2508     windres
2509     x86asmexe
2510 "
2511
2512 CMDLINE_APPEND="
2513     extra_cflags
2514     extra_cxxflags
2515     extra_objcflags
2516     host_cppflags
2517 "
2518
2519 # code dependency declarations
2520
2521 # architecture extensions
2522
2523 armv5te_deps="arm"
2524 armv6_deps="arm"
2525 armv6t2_deps="arm"
2526 armv8_deps="aarch64"
2527 neon_deps_any="aarch64 arm"
2528 intrinsics_neon_deps="neon"
2529 vfp_deps_any="aarch64 arm"
2530 vfpv3_deps="vfp"
2531 setend_deps="arm"
2532
2533 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2534
2535 altivec_deps="ppc"
2536 dcbzl_deps="ppc"
2537 ldbrx_deps="ppc"
2538 ppc4xx_deps="ppc"
2539 vsx_deps="altivec"
2540 power8_deps="vsx"
2541
2542 loongson2_deps="mips"
2543 loongson3_deps="mips"
2544 mips32r2_deps="mips"
2545 mips32r5_deps="mips"
2546 mips32r6_deps="mips"
2547 mips64r2_deps="mips"
2548 mips64r6_deps="mips"
2549 mipsfpu_deps="mips"
2550 mipsdsp_deps="mips"
2551 mipsdspr2_deps="mips"
2552 mmi_deps="mips"
2553 msa_deps="mipsfpu"
2554 msa2_deps="msa"
2555
2556 cpunop_deps="i686"
2557 x86_64_select="i686"
2558 x86_64_suggest="fast_cmov"
2559
2560 amd3dnow_deps="mmx"
2561 amd3dnowext_deps="amd3dnow"
2562 i686_deps="x86"
2563 mmx_deps="x86"
2564 mmxext_deps="mmx"
2565 sse_deps="mmxext"
2566 sse2_deps="sse"
2567 sse3_deps="sse2"
2568 ssse3_deps="sse3"
2569 sse4_deps="ssse3"
2570 sse42_deps="sse4"
2571 aesni_deps="sse42"
2572 avx_deps="sse42"
2573 xop_deps="avx"
2574 fma3_deps="avx"
2575 fma4_deps="avx"
2576 avx2_deps="avx"
2577 avx512_deps="avx2"
2578
2579 mmx_external_deps="x86asm"
2580 mmx_inline_deps="inline_asm x86"
2581 mmx_suggest="mmx_external mmx_inline"
2582
2583 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2584     eval dep=\$${ext}_deps
2585     eval ${ext}_external_deps='"${dep}_external"'
2586     eval ${ext}_inline_deps='"${dep}_inline"'
2587     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2588 done
2589
2590 aligned_stack_if_any="aarch64 ppc x86"
2591 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2592 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2593 fast_unaligned_if_any="aarch64 ppc x86"
2594 simd_align_16_if_any="altivec neon sse"
2595 simd_align_32_if_any="avx"
2596 simd_align_64_if_any="avx512"
2597
2598 # system capabilities
2599 linux_perf_deps="linux_perf_event_h"
2600 symver_if_any="symver_asm_label symver_gnu_asm"
2601 valgrind_backtrace_conflict="optimizations"
2602 valgrind_backtrace_deps="valgrind_valgrind_h"
2603
2604 # threading support
2605 atomics_gcc_if="sync_val_compare_and_swap"
2606 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2607 atomics_win32_if="MemoryBarrier"
2608 atomics_native_if_any="$ATOMICS_LIST"
2609 w32threads_deps="atomics_native"
2610 threads_if_any="$THREADS_LIST"
2611
2612 # subsystems
2613 cbs_av1_select="cbs"
2614 cbs_h264_select="cbs"
2615 cbs_h265_select="cbs"
2616 cbs_jpeg_select="cbs"
2617 cbs_mpeg2_select="cbs"
2618 cbs_vp9_select="cbs"
2619 dct_select="rdft"
2620 dirac_parse_select="golomb"
2621 dnn_suggest="libtensorflow"
2622 error_resilience_select="me_cmp"
2623 faandct_deps="faan"
2624 faandct_select="fdctdsp"
2625 faanidct_deps="faan"
2626 faanidct_select="idctdsp"
2627 h264dsp_select="startcode"
2628 hevcparse_select="golomb"
2629 frame_thread_encoder_deps="encoders threads"
2630 intrax8_select="blockdsp idctdsp"
2631 mdct_select="fft"
2632 mdct15_select="fft"
2633 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2634 mpeg_er_select="error_resilience"
2635 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2636 mpegaudiodsp_select="dct"
2637 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2638 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2639 vc1dsp_select="h264chroma qpeldsp startcode"
2640 rdft_select="fft"
2641
2642 # decoders / encoders
2643 aac_decoder_select="adts_header mdct15 mdct sinewin"
2644 aac_fixed_decoder_select="adts_header mdct sinewin"
2645 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2646 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2647 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2648 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2649 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2650 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2651 acelp_kelvin_decoder_select="audiodsp"
2652 adpcm_g722_decoder_select="g722dsp"
2653 adpcm_g722_encoder_select="g722dsp"
2654 aic_decoder_select="golomb idctdsp"
2655 alac_encoder_select="lpc"
2656 als_decoder_select="bswapdsp"
2657 amrnb_decoder_select="lsp"
2658 amrwb_decoder_select="lsp"
2659 amv_decoder_select="sp5x_decoder exif"
2660 amv_encoder_select="jpegtables mpegvideoenc"
2661 ape_decoder_select="bswapdsp llauddsp"
2662 apng_decoder_deps="zlib"
2663 apng_encoder_deps="zlib"
2664 apng_encoder_select="llvidencdsp"
2665 aptx_decoder_select="audio_frame_queue"
2666 aptx_encoder_select="audio_frame_queue"
2667 aptx_hd_decoder_select="audio_frame_queue"
2668 aptx_hd_encoder_select="audio_frame_queue"
2669 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2670 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2671 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2672 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2673 atrac1_decoder_select="mdct sinewin"
2674 atrac3_decoder_select="mdct"
2675 atrac3al_decoder_select="mdct"
2676 atrac3p_decoder_select="mdct sinewin"
2677 atrac3pal_decoder_select="mdct sinewin"
2678 atrac9_decoder_select="mdct"
2679 avrn_decoder_select="exif jpegtables"
2680 bink_decoder_select="blockdsp hpeldsp"
2681 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2682 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2683 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2684 clearvideo_decoder_select="idctdsp"
2685 cllc_decoder_select="bswapdsp"
2686 comfortnoise_encoder_select="lpc"
2687 cook_decoder_select="audiodsp mdct sinewin"
2688 cscd_decoder_select="lzo"
2689 cscd_decoder_suggest="zlib"
2690 dca_decoder_select="mdct"
2691 dca_encoder_select="mdct"
2692 dds_decoder_select="texturedsp"
2693 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2694 dnxhd_decoder_select="blockdsp idctdsp"
2695 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2696 dolby_e_decoder_select="mdct"
2697 dvvideo_decoder_select="dvprofile idctdsp"
2698 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2699 dxa_decoder_deps="zlib"
2700 dxv_decoder_select="lzf texturedsp"
2701 eac3_decoder_select="ac3_decoder"
2702 eac3_encoder_select="ac3_encoder"
2703 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2704 eatgq_decoder_select="aandcttables"
2705 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2706 exr_decoder_deps="zlib"
2707 ffv1_decoder_select="rangecoder"
2708 ffv1_encoder_select="rangecoder"
2709 ffvhuff_decoder_select="huffyuv_decoder"
2710 ffvhuff_encoder_select="huffyuv_encoder"
2711 fic_decoder_select="golomb"
2712 flac_decoder_select="flacdsp"
2713 flac_encoder_select="bswapdsp flacdsp lpc"
2714 flashsv2_decoder_deps="zlib"
2715 flashsv2_encoder_deps="zlib"
2716 flashsv_decoder_deps="zlib"
2717 flashsv_encoder_deps="zlib"
2718 flv_decoder_select="h263_decoder"
2719 flv_encoder_select="h263_encoder"
2720 fourxm_decoder_select="blockdsp bswapdsp"
2721 fraps_decoder_select="bswapdsp huffman"
2722 g2m_decoder_deps="zlib"
2723 g2m_decoder_select="blockdsp idctdsp jpegtables"
2724 g729_decoder_select="audiodsp"
2725 h261_decoder_select="mpegvideo"
2726 h261_encoder_select="mpegvideoenc"
2727 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2728 h263_encoder_select="h263dsp mpegvideoenc"
2729 h263i_decoder_select="h263_decoder"
2730 h263p_decoder_select="h263_decoder"
2731 h263p_encoder_select="h263_encoder"
2732 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2733 h264_decoder_suggest="error_resilience"
2734 hap_decoder_select="snappy texturedsp"
2735 hap_encoder_deps="libsnappy"
2736 hap_encoder_select="texturedspenc"
2737 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2738 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2739 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2740 hymt_decoder_select="huffyuv_decoder"
2741 iac_decoder_select="imc_decoder"
2742 imc_decoder_select="bswapdsp fft mdct sinewin"
2743 imm4_decoder_select="bswapdsp"
2744 imm5_decoder_select="h264_decoder hevc_decoder"
2745 indeo3_decoder_select="hpeldsp"
2746 indeo4_decoder_select="ividsp"
2747 indeo5_decoder_select="ividsp"
2748 interplay_video_decoder_select="hpeldsp"
2749 jpegls_decoder_select="mjpeg_decoder"
2750 jv_decoder_select="blockdsp"
2751 lagarith_decoder_select="llviddsp"
2752 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2753 lscr_decoder_deps="zlib"
2754 magicyuv_decoder_select="llviddsp"
2755 magicyuv_encoder_select="llvidencdsp"
2756 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2757 metasound_decoder_select="lsp mdct sinewin"
2758 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2759 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2760 mjpeg_encoder_select="jpegtables mpegvideoenc"
2761 mjpegb_decoder_select="mjpeg_decoder"
2762 mlp_decoder_select="mlp_parser"
2763 mlp_encoder_select="lpc audio_frame_queue"
2764 motionpixels_decoder_select="bswapdsp"
2765 mp1_decoder_select="mpegaudio"
2766 mp1float_decoder_select="mpegaudio"
2767 mp2_decoder_select="mpegaudio"
2768 mp2float_decoder_select="mpegaudio"
2769 mp3_decoder_select="mpegaudio"
2770 mp3adu_decoder_select="mpegaudio"
2771 mp3adufloat_decoder_select="mpegaudio"
2772 mp3float_decoder_select="mpegaudio"
2773 mp3on4_decoder_select="mpegaudio"
2774 mp3on4float_decoder_select="mpegaudio"
2775 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2776 mpc8_decoder_select="mpegaudiodsp"
2777 mpegvideo_decoder_select="mpegvideo"
2778 mpeg1video_decoder_select="mpegvideo"
2779 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2780 mpeg2video_decoder_select="mpegvideo"
2781 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2782 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2783 mpeg4_encoder_select="h263_encoder"
2784 msa1_decoder_select="mss34dsp"
2785 mscc_decoder_deps="zlib"
2786 msmpeg4v1_decoder_select="h263_decoder"
2787 msmpeg4v2_decoder_select="h263_decoder"
2788 msmpeg4v2_encoder_select="h263_encoder"
2789 msmpeg4v3_decoder_select="h263_decoder"
2790 msmpeg4v3_encoder_select="h263_encoder"
2791 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2792 mts2_decoder_select="mss34dsp"
2793 mvha_decoder_deps="zlib"
2794 mvha_decoder_select="llviddsp"
2795 mwsc_decoder_deps="zlib"
2796 mxpeg_decoder_select="mjpeg_decoder"
2797 nellymoser_decoder_select="mdct sinewin"
2798 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2799 nuv_decoder_select="idctdsp lzo"
2800 on2avc_decoder_select="mdct"
2801 opus_decoder_deps="swresample"
2802 opus_decoder_select="mdct15"
2803 opus_encoder_select="audio_frame_queue mdct15"
2804 png_decoder_deps="zlib"
2805 png_encoder_deps="zlib"
2806 png_encoder_select="llvidencdsp"
2807 prores_decoder_select="blockdsp idctdsp"
2808 prores_encoder_select="fdctdsp"
2809 qcelp_decoder_select="lsp"
2810 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2811 ra_144_decoder_select="audiodsp"
2812 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2813 ralf_decoder_select="golomb"
2814 rasc_decoder_deps="zlib"
2815 rawvideo_decoder_select="bswapdsp"
2816 rscc_decoder_deps="zlib"
2817 rtjpeg_decoder_select="me_cmp"
2818 rv10_decoder_select="h263_decoder"
2819 rv10_encoder_select="h263_encoder"
2820 rv20_decoder_select="h263_decoder"
2821 rv20_encoder_select="h263_encoder"
2822 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2823 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2824 screenpresso_decoder_deps="zlib"
2825 shorten_decoder_select="bswapdsp"
2826 sipr_decoder_select="lsp"
2827 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2828 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2829 sonic_decoder_select="golomb rangecoder"
2830 sonic_encoder_select="golomb rangecoder"
2831 sonic_ls_encoder_select="golomb rangecoder"
2832 sp5x_decoder_select="mjpeg_decoder"
2833 speedhq_decoder_select="mpegvideo"
2834 srgc_decoder_deps="zlib"
2835 svq1_decoder_select="hpeldsp"
2836 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2837 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2838 svq3_decoder_suggest="zlib"
2839 tak_decoder_select="audiodsp"
2840 tdsc_decoder_deps="zlib"
2841 tdsc_decoder_select="mjpeg_decoder"
2842 theora_decoder_select="vp3_decoder"
2843 thp_decoder_select="mjpeg_decoder"
2844 tiff_decoder_select="mjpeg_decoder"
2845 tiff_decoder_suggest="zlib lzma"
2846 tiff_encoder_suggest="zlib"
2847 truehd_decoder_select="mlp_parser"
2848 truehd_encoder_select="lpc audio_frame_queue"
2849 truemotion2_decoder_select="bswapdsp"
2850 truespeech_decoder_select="bswapdsp"
2851 tscc_decoder_deps="zlib"
2852 twinvq_decoder_select="mdct lsp sinewin"
2853 txd_decoder_select="texturedsp"
2854 utvideo_decoder_select="bswapdsp llviddsp"
2855 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2856 vble_decoder_select="llviddsp"
2857 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2858 vc1image_decoder_select="vc1_decoder"
2859 vorbis_decoder_select="mdct"
2860 vorbis_encoder_select="audio_frame_queue mdct"
2861 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2862 vp4_decoder_select="vp3_decoder"
2863 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2864 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2865 vp6a_decoder_select="vp6_decoder"
2866 vp6f_decoder_select="vp6_decoder"
2867 vp7_decoder_select="h264pred videodsp vp8dsp"
2868 vp8_decoder_select="h264pred videodsp vp8dsp"
2869 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2870 wcmv_decoder_deps="zlib"
2871 webp_decoder_select="vp8_decoder exif"
2872 wmalossless_decoder_select="llauddsp"
2873 wmapro_decoder_select="mdct sinewin wma_freqs"
2874 wmav1_decoder_select="mdct sinewin wma_freqs"
2875 wmav1_encoder_select="mdct sinewin wma_freqs"
2876 wmav2_decoder_select="mdct sinewin wma_freqs"
2877 wmav2_encoder_select="mdct sinewin wma_freqs"
2878 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2879 wmv1_decoder_select="h263_decoder"
2880 wmv1_encoder_select="h263_encoder"
2881 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2882 wmv2_encoder_select="h263_encoder wmv2dsp"
2883 wmv3_decoder_select="vc1_decoder"
2884 wmv3image_decoder_select="wmv3_decoder"
2885 xma1_decoder_select="wmapro_decoder"
2886 xma2_decoder_select="wmapro_decoder"
2887 ylc_decoder_select="bswapdsp"
2888 zerocodec_decoder_deps="zlib"
2889 zlib_decoder_deps="zlib"
2890 zlib_encoder_deps="zlib"
2891 zmbv_decoder_deps="zlib"
2892 zmbv_encoder_deps="zlib"
2893
2894 # hardware accelerators
2895 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2896 cuda_deps="ffnvcodec"
2897 cuvid_deps="ffnvcodec"
2898 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2899 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2900 ffnvcodec_deps_any="libdl LoadLibrary"
2901 nvdec_deps="ffnvcodec"
2902 vaapi_x11_deps="xlib"
2903 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2904 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2905 xvmc_deps="X11_extensions_XvMClib_h"
2906
2907 h263_vaapi_hwaccel_deps="vaapi"
2908 h263_vaapi_hwaccel_select="h263_decoder"
2909 h263_videotoolbox_hwaccel_deps="videotoolbox"
2910 h263_videotoolbox_hwaccel_select="h263_decoder"
2911 h264_d3d11va_hwaccel_deps="d3d11va"
2912 h264_d3d11va_hwaccel_select="h264_decoder"
2913 h264_d3d11va2_hwaccel_deps="d3d11va"
2914 h264_d3d11va2_hwaccel_select="h264_decoder"
2915 h264_dxva2_hwaccel_deps="dxva2"
2916 h264_dxva2_hwaccel_select="h264_decoder"
2917 h264_nvdec_hwaccel_deps="nvdec"
2918 h264_nvdec_hwaccel_select="h264_decoder"
2919 h264_vaapi_hwaccel_deps="vaapi"
2920 h264_vaapi_hwaccel_select="h264_decoder"
2921 h264_vdpau_hwaccel_deps="vdpau"
2922 h264_vdpau_hwaccel_select="h264_decoder"
2923 h264_videotoolbox_hwaccel_deps="videotoolbox"
2924 h264_videotoolbox_hwaccel_select="h264_decoder"
2925 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2926 hevc_d3d11va_hwaccel_select="hevc_decoder"
2927 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2928 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2929 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2930 hevc_dxva2_hwaccel_select="hevc_decoder"
2931 hevc_nvdec_hwaccel_deps="nvdec"
2932 hevc_nvdec_hwaccel_select="hevc_decoder"
2933 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2934 hevc_vaapi_hwaccel_select="hevc_decoder"
2935 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2936 hevc_vdpau_hwaccel_select="hevc_decoder"
2937 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2938 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2939 mjpeg_nvdec_hwaccel_deps="nvdec"
2940 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2941 mjpeg_vaapi_hwaccel_deps="vaapi"
2942 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2943 mpeg_xvmc_hwaccel_deps="xvmc"
2944 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2945 mpeg1_nvdec_hwaccel_deps="nvdec"
2946 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2947 mpeg1_vdpau_hwaccel_deps="vdpau"
2948 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2949 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2950 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2951 mpeg1_xvmc_hwaccel_deps="xvmc"
2952 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2953 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2954 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2955 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2956 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2957 mpeg2_dxva2_hwaccel_deps="dxva2"
2958 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2959 mpeg2_nvdec_hwaccel_deps="nvdec"
2960 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2961 mpeg2_vaapi_hwaccel_deps="vaapi"
2962 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2963 mpeg2_vdpau_hwaccel_deps="vdpau"
2964 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2965 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2966 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_xvmc_hwaccel_deps="xvmc"
2968 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2969 mpeg4_nvdec_hwaccel_deps="nvdec"
2970 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2971 mpeg4_vaapi_hwaccel_deps="vaapi"
2972 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2973 mpeg4_vdpau_hwaccel_deps="vdpau"
2974 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2975 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2976 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2977 vc1_d3d11va_hwaccel_deps="d3d11va"
2978 vc1_d3d11va_hwaccel_select="vc1_decoder"
2979 vc1_d3d11va2_hwaccel_deps="d3d11va"
2980 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2981 vc1_dxva2_hwaccel_deps="dxva2"
2982 vc1_dxva2_hwaccel_select="vc1_decoder"
2983 vc1_nvdec_hwaccel_deps="nvdec"
2984 vc1_nvdec_hwaccel_select="vc1_decoder"
2985 vc1_vaapi_hwaccel_deps="vaapi"
2986 vc1_vaapi_hwaccel_select="vc1_decoder"
2987 vc1_vdpau_hwaccel_deps="vdpau"
2988 vc1_vdpau_hwaccel_select="vc1_decoder"
2989 vp8_nvdec_hwaccel_deps="nvdec"
2990 vp8_nvdec_hwaccel_select="vp8_decoder"
2991 vp8_vaapi_hwaccel_deps="vaapi"
2992 vp8_vaapi_hwaccel_select="vp8_decoder"
2993 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2994 vp9_d3d11va_hwaccel_select="vp9_decoder"
2995 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2996 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2997 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2998 vp9_dxva2_hwaccel_select="vp9_decoder"
2999 vp9_nvdec_hwaccel_deps="nvdec"
3000 vp9_nvdec_hwaccel_select="vp9_decoder"
3001 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3002 vp9_vaapi_hwaccel_select="vp9_decoder"
3003 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3004 vp9_vdpau_hwaccel_select="vp9_decoder"
3005 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3006 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3007 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3008 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3009 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3010 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3011
3012 # hardware-accelerated codecs
3013 omx_deps="libdl pthreads"
3014 omx_rpi_select="omx"
3015 qsv_deps="libmfx"
3016 qsvdec_select="qsv"
3017 qsvenc_select="qsv"
3018 qsvvpp_select="qsv"
3019 vaapi_encode_deps="vaapi"
3020 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3021
3022 hwupload_cuda_filter_deps="ffnvcodec"
3023 scale_npp_filter_deps="ffnvcodec libnpp"
3024 scale_cuda_filter_deps="ffnvcodec"
3025 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3026 thumbnail_cuda_filter_deps="ffnvcodec"
3027 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3028 transpose_npp_filter_deps="ffnvcodec libnpp"
3029
3030 amf_deps_any="libdl LoadLibrary"
3031 nvenc_deps="ffnvcodec"
3032 nvenc_deps_any="libdl LoadLibrary"
3033 nvenc_encoder_deps="nvenc"
3034
3035 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3036 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3037 h264_amf_encoder_deps="amf"
3038 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3039 h264_cuvid_decoder_deps="cuvid"
3040 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3041 h264_mediacodec_decoder_deps="mediacodec"
3042 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3043 h264_mmal_decoder_deps="mmal"
3044 h264_nvenc_encoder_deps="nvenc"
3045 h264_omx_encoder_deps="omx"
3046 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3047 h264_qsv_encoder_select="qsvenc"
3048 h264_rkmpp_decoder_deps="rkmpp"
3049 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3050 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3051 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3052 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3053 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3054 hevc_amf_encoder_deps="amf"
3055 hevc_cuvid_decoder_deps="cuvid"
3056 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3057 hevc_mediacodec_decoder_deps="mediacodec"
3058 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3059 hevc_nvenc_encoder_deps="nvenc"
3060 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3061 hevc_qsv_encoder_select="hevcparse qsvenc"
3062 hevc_rkmpp_decoder_deps="rkmpp"
3063 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3064 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3065 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3066 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3067 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3068 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3069 mjpeg_cuvid_decoder_deps="cuvid"
3070 mjpeg_qsv_decoder_select="qsvdec"
3071 mjpeg_qsv_encoder_deps="libmfx"
3072 mjpeg_qsv_encoder_select="qsvenc"
3073 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3074 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3075 mpeg1_cuvid_decoder_deps="cuvid"
3076 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3077 mpeg2_crystalhd_decoder_select="crystalhd"
3078 mpeg2_cuvid_decoder_deps="cuvid"
3079 mpeg2_mmal_decoder_deps="mmal"
3080 mpeg2_mediacodec_decoder_deps="mediacodec"
3081 mpeg2_qsv_decoder_select="qsvdec"
3082 mpeg2_qsv_encoder_select="qsvenc"
3083 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3084 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3085 mpeg4_crystalhd_decoder_select="crystalhd"
3086 mpeg4_cuvid_decoder_deps="cuvid"
3087 mpeg4_mediacodec_decoder_deps="mediacodec"
3088 mpeg4_mmal_decoder_deps="mmal"
3089 mpeg4_omx_encoder_deps="omx"
3090 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3091 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3092 msmpeg4_crystalhd_decoder_select="crystalhd"
3093 nvenc_h264_encoder_select="h264_nvenc_encoder"
3094 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3095 vc1_crystalhd_decoder_select="crystalhd"
3096 vc1_cuvid_decoder_deps="cuvid"
3097 vc1_mmal_decoder_deps="mmal"
3098 vc1_qsv_decoder_select="qsvdec"
3099 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3100 vp8_cuvid_decoder_deps="cuvid"
3101 vp8_mediacodec_decoder_deps="mediacodec"
3102 vp8_qsv_decoder_select="qsvdec"
3103 vp8_rkmpp_decoder_deps="rkmpp"
3104 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3105 vp8_vaapi_encoder_select="vaapi_encode"
3106 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3107 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3108 vp9_cuvid_decoder_deps="cuvid"
3109 vp9_mediacodec_decoder_deps="mediacodec"
3110 vp9_qsv_decoder_select="qsvdec"
3111 vp9_rkmpp_decoder_deps="rkmpp"
3112 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3113 vp9_vaapi_encoder_select="vaapi_encode"
3114 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3115 vp9_qsv_encoder_select="qsvenc"
3116 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3117 wmv3_crystalhd_decoder_select="crystalhd"
3118
3119 # parsers
3120 aac_parser_select="adts_header"
3121 av1_parser_select="cbs_av1"
3122 h264_parser_select="golomb h264dsp h264parse"
3123 hevc_parser_select="hevcparse"
3124 mpegaudio_parser_select="mpegaudioheader"
3125 mpegvideo_parser_select="mpegvideo"
3126 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3127 vc1_parser_select="vc1dsp"
3128
3129 # bitstream_filters
3130 aac_adtstoasc_bsf_select="adts_header"
3131 av1_frame_merge_bsf_select="cbs_av1"
3132 av1_frame_split_bsf_select="cbs_av1"
3133 av1_metadata_bsf_select="cbs_av1"
3134 eac3_core_bsf_select="ac3_parser"
3135 filter_units_bsf_select="cbs"
3136 h264_metadata_bsf_deps="const_nan"
3137 h264_metadata_bsf_select="cbs_h264"
3138 h264_redundant_pps_bsf_select="cbs_h264"
3139 hevc_metadata_bsf_select="cbs_h265"
3140 mjpeg2jpeg_bsf_select="jpegtables"
3141 mpeg2_metadata_bsf_select="cbs_mpeg2"
3142 trace_headers_bsf_select="cbs"
3143 vp9_metadata_bsf_select="cbs_vp9"
3144
3145 # external libraries
3146 aac_at_decoder_deps="audiotoolbox"
3147 aac_at_decoder_select="aac_adtstoasc_bsf"
3148 ac3_at_decoder_deps="audiotoolbox"
3149 ac3_at_decoder_select="ac3_parser"
3150 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3151 alac_at_decoder_deps="audiotoolbox"
3152 amr_nb_at_decoder_deps="audiotoolbox"
3153 avisynth_deps_any="libdl LoadLibrary"
3154 avisynth_demuxer_deps="avisynth"
3155 avisynth_demuxer_select="riffdec"
3156 eac3_at_decoder_deps="audiotoolbox"
3157 eac3_at_decoder_select="ac3_parser"
3158 gsm_ms_at_decoder_deps="audiotoolbox"
3159 ilbc_at_decoder_deps="audiotoolbox"
3160 mp1_at_decoder_deps="audiotoolbox"
3161 mp2_at_decoder_deps="audiotoolbox"
3162 mp3_at_decoder_deps="audiotoolbox"
3163 mp1_at_decoder_select="mpegaudioheader"
3164 mp2_at_decoder_select="mpegaudioheader"
3165 mp3_at_decoder_select="mpegaudioheader"
3166 pcm_alaw_at_decoder_deps="audiotoolbox"
3167 pcm_mulaw_at_decoder_deps="audiotoolbox"
3168 qdmc_decoder_select="fft"
3169 qdmc_at_decoder_deps="audiotoolbox"
3170 qdm2_at_decoder_deps="audiotoolbox"
3171 aac_at_encoder_deps="audiotoolbox"
3172 aac_at_encoder_select="audio_frame_queue"
3173 alac_at_encoder_deps="audiotoolbox"
3174 alac_at_encoder_select="audio_frame_queue"
3175 ilbc_at_encoder_deps="audiotoolbox"
3176 ilbc_at_encoder_select="audio_frame_queue"
3177 pcm_alaw_at_encoder_deps="audiotoolbox"
3178 pcm_alaw_at_encoder_select="audio_frame_queue"
3179 pcm_mulaw_at_encoder_deps="audiotoolbox"
3180 pcm_mulaw_at_encoder_select="audio_frame_queue"
3181 chromaprint_muxer_deps="chromaprint"
3182 h264_videotoolbox_encoder_deps="pthreads"
3183 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3184 hevc_videotoolbox_encoder_deps="pthreads"
3185 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3186 libaom_av1_decoder_deps="libaom"
3187 libaom_av1_encoder_deps="libaom"
3188 libaom_av1_encoder_select="extract_extradata_bsf"
3189 libaribb24_decoder_deps="libaribb24"
3190 libcelt_decoder_deps="libcelt"
3191 libcodec2_decoder_deps="libcodec2"
3192 libcodec2_encoder_deps="libcodec2"
3193 libdav1d_decoder_deps="libdav1d"
3194 libdavs2_decoder_deps="libdavs2"
3195 libfdk_aac_decoder_deps="libfdk_aac"
3196 libfdk_aac_encoder_deps="libfdk_aac"
3197 libfdk_aac_encoder_select="audio_frame_queue"
3198 libgme_demuxer_deps="libgme"
3199 libgsm_decoder_deps="libgsm"
3200 libgsm_encoder_deps="libgsm"
3201 libgsm_ms_decoder_deps="libgsm"
3202 libgsm_ms_encoder_deps="libgsm"
3203 libilbc_decoder_deps="libilbc"
3204 libilbc_encoder_deps="libilbc"
3205 libkvazaar_encoder_deps="libkvazaar"
3206 libmodplug_demuxer_deps="libmodplug"
3207 libmp3lame_encoder_deps="libmp3lame"
3208 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3209 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3210 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3211 libopencore_amrnb_encoder_select="audio_frame_queue"
3212 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3213 libopenh264_decoder_deps="libopenh264"
3214 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3215 libopenh264_encoder_deps="libopenh264"
3216 libopenjpeg_decoder_deps="libopenjpeg"
3217 libopenjpeg_encoder_deps="libopenjpeg"
3218 libopenmpt_demuxer_deps="libopenmpt"
3219 libopus_decoder_deps="libopus"
3220 libopus_encoder_deps="libopus"
3221 libopus_encoder_select="audio_frame_queue"
3222 librav1e_encoder_deps="librav1e"
3223 librav1e_encoder_select="extract_extradata_bsf"
3224 librsvg_decoder_deps="librsvg"
3225 libshine_encoder_deps="libshine"
3226 libshine_encoder_select="audio_frame_queue"
3227 libspeex_decoder_deps="libspeex"
3228 libspeex_encoder_deps="libspeex"
3229 libspeex_encoder_select="audio_frame_queue"
3230 libtheora_encoder_deps="libtheora"
3231 libtwolame_encoder_deps="libtwolame"
3232 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3233 libvorbis_decoder_deps="libvorbis"
3234 libvorbis_encoder_deps="libvorbis libvorbisenc"
3235 libvorbis_encoder_select="audio_frame_queue"
3236 libvpx_vp8_decoder_deps="libvpx"
3237 libvpx_vp8_encoder_deps="libvpx"
3238 libvpx_vp9_decoder_deps="libvpx"
3239 libvpx_vp9_encoder_deps="libvpx"
3240 libwavpack_encoder_deps="libwavpack"
3241 libwavpack_encoder_select="audio_frame_queue"
3242 libwebp_encoder_deps="libwebp"
3243 libwebp_anim_encoder_deps="libwebp"
3244 libx262_encoder_deps="libx262"
3245 libx264_encoder_deps="libx264"
3246 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3247 libx264rgb_encoder_select="libx264_encoder"
3248 libx265_encoder_deps="libx265"
3249 libxavs_encoder_deps="libxavs"
3250 libxavs2_encoder_deps="libxavs2"
3251 libxvid_encoder_deps="libxvid"
3252 libzvbi_teletext_decoder_deps="libzvbi"
3253 vapoursynth_demuxer_deps="vapoursynth"
3254 videotoolbox_suggest="coreservices"
3255 videotoolbox_deps="corefoundation coremedia corevideo"
3256 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3257
3258 # demuxers / muxers
3259 ac3_demuxer_select="ac3_parser"
3260 act_demuxer_select="riffdec"
3261 aiff_muxer_select="iso_media"
3262 asf_demuxer_select="riffdec"
3263 asf_o_demuxer_select="riffdec"
3264 asf_muxer_select="riffenc"
3265 asf_stream_muxer_select="asf_muxer"
3266 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3267 avi_demuxer_select="iso_media riffdec exif"
3268 avi_muxer_select="riffenc"
3269 caf_demuxer_select="iso_media riffdec"
3270 caf_muxer_select="iso_media"
3271 dash_muxer_select="mp4_muxer"
3272 dash_demuxer_deps="libxml2"
3273 dirac_demuxer_select="dirac_parser"
3274 dts_demuxer_select="dca_parser"
3275 dtshd_demuxer_select="dca_parser"
3276 dv_demuxer_select="dvprofile"
3277 dv_muxer_select="dvprofile"
3278 dxa_demuxer_select="riffdec"
3279 eac3_demuxer_select="ac3_parser"
3280 f4v_muxer_select="mov_muxer"
3281 fifo_muxer_deps="threads"
3282 flac_demuxer_select="flac_parser"
3283 hds_muxer_select="flv_muxer"
3284 hls_muxer_select="mpegts_muxer"
3285 hls_muxer_suggest="gcrypt openssl"
3286 image2_alias_pix_demuxer_select="image2_demuxer"
3287 image2_brender_pix_demuxer_select="image2_demuxer"
3288 ipod_muxer_select="mov_muxer"
3289 ismv_muxer_select="mov_muxer"
3290 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3291 matroska_audio_muxer_select="matroska_muxer"
3292 matroska_demuxer_select="iso_media riffdec"
3293 matroska_demuxer_suggest="bzlib lzo zlib"
3294 matroska_muxer_select="iso_media riffenc"
3295 mmf_muxer_select="riffenc"
3296 mov_demuxer_select="iso_media riffdec"
3297 mov_demuxer_suggest="zlib"
3298 mov_muxer_select="iso_media riffenc rtpenc_chain"
3299 mp3_demuxer_select="mpegaudio_parser"
3300 mp3_muxer_select="mpegaudioheader"
3301 mp4_muxer_select="mov_muxer"
3302 mpegts_demuxer_select="iso_media"
3303 mpegts_muxer_select="adts_muxer latm_muxer"
3304 mpegtsraw_demuxer_select="mpegts_demuxer"
3305 mxf_muxer_select="golomb"
3306 mxf_d10_muxer_select="mxf_muxer"
3307 mxf_opatom_muxer_select="mxf_muxer"
3308 nut_muxer_select="riffenc"
3309 nuv_demuxer_select="riffdec"
3310 oga_muxer_select="ogg_muxer"
3311 ogg_demuxer_select="dirac_parse"
3312 ogv_muxer_select="ogg_muxer"
3313 opus_muxer_select="ogg_muxer"
3314 psp_muxer_select="mov_muxer"
3315 rtp_demuxer_select="sdp_demuxer"
3316 rtp_muxer_select="golomb jpegtables"
3317 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3318 rtsp_demuxer_select="http_protocol rtpdec"
3319 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3320 sap_demuxer_select="sdp_demuxer"
3321 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3322 sdp_demuxer_select="rtpdec"
3323 smoothstreaming_muxer_select="ismv_muxer"
3324 spdif_demuxer_select="adts_header"
3325 spdif_muxer_select="adts_header"
3326 spx_muxer_select="ogg_muxer"
3327 swf_demuxer_suggest="zlib"
3328 tak_demuxer_select="tak_parser"
3329 tg2_muxer_select="mov_muxer"
3330 tgp_muxer_select="mov_muxer"
3331 vobsub_demuxer_select="mpegps_demuxer"
3332 w64_demuxer_select="wav_demuxer"
3333 w64_muxer_select="wav_muxer"
3334 wav_demuxer_select="riffdec"
3335 wav_muxer_select="riffenc"
3336 webm_muxer_select="iso_media riffenc"
3337 webm_dash_manifest_demuxer_select="matroska_demuxer"
3338 wtv_demuxer_select="mpegts_demuxer riffdec"
3339 wtv_muxer_select="mpegts_muxer riffenc"
3340 xmv_demuxer_select="riffdec"
3341 xwma_demuxer_select="riffdec"
3342
3343 # indevs / outdevs
3344 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3345 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3346 alsa_indev_deps="alsa"
3347 alsa_outdev_deps="alsa"
3348 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3349 avfoundation_indev_suggest="coregraphics applicationservices"
3350 avfoundation_indev_extralibs="-framework Foundation"
3351 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3352 caca_outdev_deps="libcaca"
3353 decklink_deps_any="libdl LoadLibrary"
3354 decklink_indev_deps="decklink threads"
3355 decklink_indev_extralibs="-lstdc++"
3356 decklink_outdev_deps="decklink threads"
3357 decklink_outdev_suggest="libklvanc"
3358 decklink_outdev_extralibs="-lstdc++"
3359 dshow_indev_deps="IBaseFilter"
3360 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3361 fbdev_indev_deps="linux_fb_h"
3362 fbdev_outdev_deps="linux_fb_h"
3363 gdigrab_indev_deps="CreateDIBSection"
3364 gdigrab_indev_extralibs="-lgdi32"
3365 gdigrab_indev_select="bmp_decoder"
3366 iec61883_indev_deps="libiec61883"
3367 jack_indev_deps="libjack"
3368 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3369 kmsgrab_indev_deps="libdrm"
3370 lavfi_indev_deps="avfilter"
3371 libcdio_indev_deps="libcdio"
3372 libdc1394_indev_deps="libdc1394"
3373 openal_indev_deps="openal"
3374 opengl_outdev_deps="opengl"
3375 opengl_outdev_suggest="sdl2"
3376 oss_indev_deps_any="sys_soundcard_h"
3377 oss_outdev_deps_any="sys_soundcard_h"
3378 pulse_indev_deps="libpulse"
3379 pulse_outdev_deps="libpulse"
3380 sdl2_outdev_deps="sdl2"
3381 sndio_indev_deps="sndio"
3382 sndio_outdev_deps="sndio"
3383 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3384 v4l2_indev_suggest="libv4l2"
3385 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3386 v4l2_outdev_suggest="libv4l2"
3387 vfwcap_indev_deps="vfw32 vfwcap_defines"
3388 xcbgrab_indev_deps="libxcb"
3389 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3390 xv_outdev_deps="xlib"
3391
3392 # protocols
3393 async_protocol_deps="threads"
3394 bluray_protocol_deps="libbluray"
3395 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3396 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3397 ffrtmpcrypt_protocol_select="tcp_protocol"
3398 ffrtmphttp_protocol_conflict="librtmp_protocol"
3399 ffrtmphttp_protocol_select="http_protocol"
3400 ftp_protocol_select="tcp_protocol"
3401 gopher_protocol_select="network"
3402 http_protocol_select="tcp_protocol"
3403 http_protocol_suggest="zlib"
3404 httpproxy_protocol_select="tcp_protocol"
3405 httpproxy_protocol_suggest="zlib"
3406 https_protocol_select="tls_protocol"
3407 https_protocol_suggest="zlib"
3408 icecast_protocol_select="http_protocol"
3409 mmsh_protocol_select="http_protocol"
3410 mmst_protocol_select="network"
3411 rtmp_protocol_conflict="librtmp_protocol"
3412 rtmp_protocol_select="tcp_protocol"
3413 rtmp_protocol_suggest="zlib"
3414 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3415 rtmpe_protocol_suggest="zlib"
3416 rtmps_protocol_conflict="librtmp_protocol"
3417 rtmps_protocol_select="tls_protocol"
3418 rtmps_protocol_suggest="zlib"
3419 rtmpt_protocol_select="ffrtmphttp_protocol"
3420 rtmpt_protocol_suggest="zlib"
3421 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3422 rtmpte_protocol_suggest="zlib"
3423 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3424 rtmpts_protocol_suggest="zlib"
3425 rtp_protocol_select="udp_protocol"
3426 schannel_conflict="openssl gnutls libtls mbedtls"
3427 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3428 sctp_protocol_select="network"
3429 securetransport_conflict="openssl gnutls libtls mbedtls"
3430 srtp_protocol_select="rtp_protocol srtp"
3431 tcp_protocol_select="network"
3432 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3433 tls_protocol_select="tcp_protocol"
3434 udp_protocol_select="network"
3435 udplite_protocol_select="network"
3436 unix_protocol_deps="sys_un_h"
3437 unix_protocol_select="network"
3438
3439 # external library protocols
3440 libamqp_protocol_deps="librabbitmq"
3441 libamqp_protocol_select="network"
3442 librtmp_protocol_deps="librtmp"
3443 librtmpe_protocol_deps="librtmp"
3444 librtmps_protocol_deps="librtmp"
3445 librtmpt_protocol_deps="librtmp"
3446 librtmpte_protocol_deps="librtmp"
3447 libsmbclient_protocol_deps="libsmbclient gplv3"
3448 libsrt_protocol_deps="libsrt"
3449 libsrt_protocol_select="network"
3450 libssh_protocol_deps="libssh"
3451 libtls_conflict="openssl gnutls mbedtls"
3452 libzmq_protocol_deps="libzmq"
3453 libzmq_protocol_select="network"
3454
3455 # filters
3456 afftdn_filter_deps="avcodec"
3457 afftdn_filter_select="fft"
3458 afftfilt_filter_deps="avcodec"
3459 afftfilt_filter_select="fft"
3460 afir_filter_deps="avcodec"
3461 afir_filter_select="rdft"
3462 amovie_filter_deps="avcodec avformat"
3463 aresample_filter_deps="swresample"
3464 asr_filter_deps="pocketsphinx"
3465 ass_filter_deps="libass"
3466 atempo_filter_deps="avcodec"
3467 atempo_filter_select="rdft"
3468 avgblur_opencl_filter_deps="opencl"
3469 avgblur_vulkan_filter_deps="vulkan libglslang"
3470 azmq_filter_deps="libzmq"
3471 blackframe_filter_deps="gpl"
3472 bm3d_filter_deps="avcodec"
3473 bm3d_filter_select="dct"
3474 boxblur_filter_deps="gpl"
3475 boxblur_opencl_filter_deps="opencl gpl"
3476 bs2b_filter_deps="libbs2b"
3477 chromaber_vulkan_filter_deps="vulkan libglslang"
3478 colorkey_opencl_filter_deps="opencl"
3479 colormatrix_filter_deps="gpl"
3480 convolution_opencl_filter_deps="opencl"
3481 convolve_filter_deps="avcodec"
3482 convolve_filter_select="fft"
3483 coreimage_filter_deps="coreimage appkit"
3484 coreimage_filter_extralibs="-framework OpenGL"
3485 coreimagesrc_filter_deps="coreimage appkit"
3486 coreimagesrc_filter_extralibs="-framework OpenGL"
3487 cover_rect_filter_deps="avcodec avformat gpl"
3488 cropdetect_filter_deps="gpl"
3489 deconvolve_filter_deps="avcodec"
3490 deconvolve_filter_select="fft"
3491 deinterlace_qsv_filter_deps="libmfx"
3492 deinterlace_vaapi_filter_deps="vaapi"
3493 delogo_filter_deps="gpl"
3494 denoise_vaapi_filter_deps="vaapi"
3495 derain_filter_select="dnn"
3496 deshake_filter_select="pixelutils"
3497 deshake_opencl_filter_deps="opencl"
3498 dilation_opencl_filter_deps="opencl"
3499 dnn_processing_filter_select="dnn"
3500 drawtext_filter_deps="libfreetype"
3501 drawtext_filter_suggest="libfontconfig libfribidi"
3502 elbg_filter_deps="avcodec"
3503 eq_filter_deps="gpl"
3504 erosion_opencl_filter_deps="opencl"
3505 fftfilt_filter_deps="avcodec"
3506 fftfilt_filter_select="rdft"
3507 fftdnoiz_filter_deps="avcodec"
3508 fftdnoiz_filter_select="fft"
3509 find_rect_filter_deps="avcodec avformat gpl"
3510 firequalizer_filter_deps="avcodec"
3511 firequalizer_filter_select="rdft"
3512 flite_filter_deps="libflite"
3513 framerate_filter_select="scene_sad"
3514 freezedetect_filter_select="scene_sad"
3515 frei0r_filter_deps="frei0r libdl"
3516 frei0r_src_filter_deps="frei0r libdl"
3517 fspp_filter_deps="gpl"
3518 headphone_filter_select="fft"
3519 histeq_filter_deps="gpl"
3520 hqdn3d_filter_deps="gpl"
3521 interlace_filter_deps="gpl"
3522 kerndeint_filter_deps="gpl"
3523 ladspa_filter_deps="ladspa libdl"
3524 lensfun_filter_deps="liblensfun version3"
3525 lv2_filter_deps="lv2"
3526 mcdeint_filter_deps="avcodec gpl"
3527 movie_filter_deps="avcodec avformat"
3528 mpdecimate_filter_deps="gpl"
3529 mpdecimate_filter_select="pixelutils"
3530 minterpolate_filter_select="scene_sad"
3531 mptestsrc_filter_deps="gpl"
3532 negate_filter_deps="lut_filter"
3533 nlmeans_opencl_filter_deps="opencl"
3534 nnedi_filter_deps="gpl"
3535 ocr_filter_deps="libtesseract"
3536 ocv_filter_deps="libopencv"
3537 openclsrc_filter_deps="opencl"
3538 overlay_opencl_filter_deps="opencl"
3539 overlay_qsv_filter_deps="libmfx"
3540 overlay_qsv_filter_select="qsvvpp"
3541 overlay_vulkan_filter_deps="vulkan libglslang"
3542 owdenoise_filter_deps="gpl"
3543 pad_opencl_filter_deps="opencl"
3544 pan_filter_deps="swresample"
3545 perspective_filter_deps="gpl"
3546 phase_filter_deps="gpl"
3547 pp7_filter_deps="gpl"
3548 pp_filter_deps="gpl postproc"
3549 prewitt_opencl_filter_deps="opencl"
3550 procamp_vaapi_filter_deps="vaapi"
3551 program_opencl_filter_deps="opencl"
3552 pullup_filter_deps="gpl"
3553 removelogo_filter_deps="avcodec avformat swscale"
3554 repeatfields_filter_deps="gpl"
3555 resample_filter_deps="avresample"
3556 roberts_opencl_filter_deps="opencl"
3557 rubberband_filter_deps="librubberband"
3558 sab_filter_deps="gpl swscale"
3559 scale2ref_filter_deps="swscale"
3560 scale_filter_deps="swscale"
3561 scale_qsv_filter_deps="libmfx"
3562 select_filter_select="scene_sad"
3563 sharpness_vaapi_filter_deps="vaapi"
3564 showcqt_filter_deps="avcodec avformat swscale"
3565 showcqt_filter_suggest="libfontconfig libfreetype"
3566 showcqt_filter_select="fft"
3567 showfreqs_filter_deps="avcodec"
3568 showfreqs_filter_select="fft"
3569 showspatial_filter_select="fft"
3570 showspectrum_filter_deps="avcodec"
3571 showspectrum_filter_select="fft"
3572 showspectrumpic_filter_deps="avcodec"
3573 showspectrumpic_filter_select="fft"
3574 signature_filter_deps="gpl avcodec avformat"
3575 sinc_filter_select="rdft"
3576 smartblur_filter_deps="gpl swscale"
3577 sobel_opencl_filter_deps="opencl"
3578 sofalizer_filter_deps="libmysofa avcodec"
3579 sofalizer_filter_select="fft"
3580 spectrumsynth_filter_deps="avcodec"
3581 spectrumsynth_filter_select="fft"
3582 spp_filter_deps="gpl avcodec"
3583 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3584 sr_filter_deps="avformat swscale"
3585 sr_filter_select="dnn"
3586 stereo3d_filter_deps="gpl"
3587 subtitles_filter_deps="avformat avcodec libass"
3588 super2xsai_filter_deps="gpl"
3589 pixfmts_super2xsai_test_deps="super2xsai_filter"
3590 superequalizer_filter_select="rdft"
3591 surround_filter_select="rdft"
3592 tinterlace_filter_deps="gpl"
3593 tinterlace_merge_test_deps="tinterlace_filter"
3594 tinterlace_pad_test_deps="tinterlace_filter"
3595 tonemap_filter_deps="const_nan"
3596 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3597 tonemap_opencl_filter_deps="opencl const_nan"
3598 transpose_opencl_filter_deps="opencl"
3599 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3600 unsharp_opencl_filter_deps="opencl"
3601 uspp_filter_deps="gpl avcodec"
3602 vaguedenoiser_filter_deps="gpl"
3603 vidstabdetect_filter_deps="libvidstab"
3604 vidstabtransform_filter_deps="libvidstab"
3605 libvmaf_filter_deps="libvmaf pthreads"
3606 zmq_filter_deps="libzmq"
3607 zoompan_filter_deps="swscale"
3608 zscale_filter_deps="libzimg const_nan"
3609 scale_vaapi_filter_deps="vaapi"
3610 scale_vulkan_filter_deps="vulkan libglslang"
3611 vpp_qsv_filter_deps="libmfx"
3612 vpp_qsv_filter_select="qsvvpp"
3613 xfade_opencl_filter_deps="opencl"
3614 yadif_cuda_filter_deps="ffnvcodec"
3615 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3616
3617 # examples
3618 avio_list_dir_deps="avformat avutil"
3619 avio_reading_deps="avformat avcodec avutil"
3620 decode_audio_example_deps="avcodec avutil"
3621 decode_video_example_deps="avcodec avutil"
3622 demuxing_decoding_example_deps="avcodec avformat avutil"
3623 encode_audio_example_deps="avcodec avutil"
3624 encode_video_example_deps="avcodec avutil"
3625 extract_mvs_example_deps="avcodec avformat avutil"
3626 filter_audio_example_deps="avfilter avutil"
3627 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3628 filtering_video_example_deps="avfilter avcodec avformat avutil"
3629 http_multiclient_example_deps="avformat avutil fork"
3630 hw_decode_example_deps="avcodec avformat avutil"
3631 metadata_example_deps="avformat avutil"
3632 muxing_example_deps="avcodec avformat avutil swscale"
3633 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3634 remuxing_example_deps="avcodec avformat avutil"
3635 resampling_audio_example_deps="avutil swresample"
3636 scaling_video_example_deps="avutil swscale"
3637 transcode_aac_example_deps="avcodec avformat swresample"
3638 transcoding_example_deps="avfilter avcodec avformat avutil"
3639 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3640 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3641
3642 # EXTRALIBS_LIST
3643 cpu_init_extralibs="pthreads_extralibs"
3644 cws2fws_extralibs="zlib_extralibs"
3645
3646 # libraries, in any order
3647 avcodec_deps="avutil"
3648 avcodec_suggest="libm"
3649 avcodec_select="null_bsf"
3650 avdevice_deps="avformat avcodec avutil"
3651 avdevice_suggest="libm"
3652 avfilter_deps="avutil"
3653 avfilter_suggest="libm"
3654 avformat_deps="avcodec avutil"
3655 avformat_suggest="libm network zlib"
3656 avresample_deps="avutil"
3657 avresample_suggest="libm"
3658 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3659 postproc_deps="avutil gpl"
3660 postproc_suggest="libm"
3661 swresample_deps="avutil"
3662 swresample_suggest="libm libsoxr"
3663 swscale_deps="avutil"
3664 swscale_suggest="libm"
3665
3666 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3667 avfilter_extralibs="pthreads_extralibs"
3668 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3669
3670 # programs
3671 ffmpeg_deps="avcodec avfilter avformat"
3672 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3673                hflip_filter null_filter
3674                transpose_filter trim_filter vflip_filter"
3675 ffmpeg_suggest="ole32 psapi shell32"
3676 ffplay_deps="avcodec avformat swscale swresample sdl2"
3677 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3678 ffplay_suggest="shell32"
3679 ffprobe_deps="avcodec avformat"
3680 ffprobe_suggest="shell32"
3681
3682 # documentation
3683 podpages_deps="perl"
3684 manpages_deps="perl pod2man"
3685 htmlpages_deps="perl"
3686 htmlpages_deps_any="makeinfo_html texi2html"
3687 txtpages_deps="perl makeinfo"
3688 doc_deps_any="manpages htmlpages podpages txtpages"
3689
3690 # default parameters
3691
3692 logfile="ffbuild/config.log"
3693
3694 # installation paths
3695 prefix_default="/usr/local"
3696 bindir_default='${prefix}/bin'
3697 datadir_default='${prefix}/share/ffmpeg'
3698 docdir_default='${prefix}/share/doc/ffmpeg'
3699 incdir_default='${prefix}/include'
3700 libdir_default='${prefix}/lib'
3701 mandir_default='${prefix}/share/man'
3702
3703 # toolchain
3704 ar_default="ar"
3705 cc_default="gcc"
3706 cxx_default="g++"
3707 host_cc_default="gcc"
3708 doxygen_default="doxygen"
3709 install="install"
3710 ln_s_default="ln -s -f"
3711 nm_default="nm -g"
3712 pkg_config_default=pkg-config
3713 ranlib_default="ranlib"
3714 strip_default="strip"
3715 version_script='--version-script'
3716 objformat="elf32"
3717 x86asmexe_default="nasm"
3718 windres_default="windres"
3719 striptype="direct"
3720
3721 # OS
3722 target_os_default=$(tolower $(uname -s))
3723 host_os=$target_os_default
3724
3725 # machine
3726 if test "$target_os_default" = aix; then
3727     arch_default=$(uname -p)
3728     strip_default="strip -X32_64"
3729     nm_default="nm -g -X32_64"
3730 else
3731     arch_default=$(uname -m)
3732 fi
3733 cpu="generic"
3734 intrinsics="none"
3735
3736 # configurable options
3737 enable $PROGRAM_LIST
3738 enable $DOCUMENT_LIST
3739 enable $EXAMPLE_LIST
3740 enable $(filter_out avresample $LIBRARY_LIST)
3741 enable stripping
3742
3743 enable asm
3744 enable debug
3745 enable doc
3746 enable faan faandct faanidct
3747 enable large_tests
3748 enable optimizations
3749 enable runtime_cpudetect
3750 enable safe_bitstream_reader
3751 enable static
3752 enable swscale_alpha
3753 enable valgrind_backtrace
3754
3755 sws_max_filter_size_default=256
3756 set_default sws_max_filter_size
3757
3758 # internal components are enabled by default
3759 enable $EXTRALIBS_LIST
3760
3761 # Avoid external, non-system, libraries getting enabled by dependency resolution
3762 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3763
3764 # build settings
3765 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3766 LIBPREF="lib"
3767 LIBSUF=".a"
3768 FULLNAME='$(NAME)$(BUILDSUF)'
3769 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3770 SLIBPREF="lib"
3771 SLIBSUF=".so"
3772 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3773 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3774 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3775 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3776 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3777 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3778 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3779
3780 asflags_filter=echo
3781 cflags_filter=echo
3782 ldflags_filter=echo
3783
3784 AS_C='-c'
3785 AS_O='-o $@'
3786 CC_C='-c'
3787 CC_E='-E -o $@'
3788 CC_O='-o $@'
3789 CXX_C='-c'
3790 CXX_O='-o $@'
3791 OBJCC_C='-c'
3792 OBJCC_E='-E -o $@'
3793 OBJCC_O='-o $@'
3794 X86ASM_O='-o $@'
3795 LD_O='-o $@'
3796 LD_LIB='-l%'
3797 LD_PATH='-L'
3798 HOSTCC_C='-c'
3799 HOSTCC_E='-E -o $@'
3800 HOSTCC_O='-o $@'
3801 HOSTLD_O='-o $@'
3802 NVCC_C='-c'
3803 NVCC_O='-o $@'
3804
3805 host_extralibs='-lm'
3806 host_cflags_filter=echo
3807 host_ldflags_filter=echo
3808
3809 target_path='$(CURDIR)'
3810
3811 # since the object filename is not given with the -MM flag, the compiler
3812 # is only able to print the basename, and we must add the path ourselves
3813 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3814 DEPFLAGS='-MM'
3815
3816 mkdir -p ffbuild
3817
3818 # find source path
3819 if test -f configure; then
3820     source_path=.
3821 elif test -f src/configure; then
3822     source_path=src
3823 else
3824     source_path=$(cd $(dirname "$0"); pwd)
3825     case "$source_path" in
3826         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3827     esac
3828     test -e "$source_path/config.h" &&
3829         die "Out of tree builds are impossible with config.h in source dir."
3830 fi
3831
3832 for v in "$@"; do
3833     r=${v#*=}
3834     l=${v%"$r"}
3835     r=$(sh_quote "$r")
3836     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3837 done
3838
3839 find_things_extern(){
3840     thing=$1
3841     pattern=$2
3842     file=$source_path/$3
3843     out=${4:-$thing}
3844     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3845 }
3846
3847 find_filters_extern(){
3848     file=$source_path/$1
3849     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3850 }
3851
3852 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3853 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3854 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3855 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3856 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3857 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3858 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3859 CODEC_LIST="
3860     $ENCODER_LIST
3861     $DECODER_LIST
3862 "
3863 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3864 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3865 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3866 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3867
3868 AVCODEC_COMPONENTS_LIST="
3869     $BSF_LIST
3870     $DECODER_LIST
3871     $ENCODER_LIST
3872     $HWACCEL_LIST
3873     $PARSER_LIST
3874 "
3875
3876 AVDEVICE_COMPONENTS_LIST="
3877     $INDEV_LIST
3878     $OUTDEV_LIST
3879 "
3880
3881 AVFILTER_COMPONENTS_LIST="
3882     $FILTER_LIST
3883 "
3884
3885 AVFORMAT_COMPONENTS_LIST="
3886     $DEMUXER_LIST
3887     $MUXER_LIST
3888     $PROTOCOL_LIST
3889 "
3890
3891 ALL_COMPONENTS="
3892     $AVCODEC_COMPONENTS_LIST
3893     $AVDEVICE_COMPONENTS_LIST
3894     $AVFILTER_COMPONENTS_LIST
3895     $AVFORMAT_COMPONENTS_LIST
3896 "
3897
3898 for n in $COMPONENT_LIST; do
3899     v=$(toupper ${n%s})_LIST
3900     eval enable \$$v
3901     eval ${n}_if_any="\$$v"
3902 done
3903
3904 enable $ARCH_EXT_LIST
3905
3906 die_unknown(){
3907     echo "Unknown option \"$1\"."
3908     echo "See $0 --help for available options."
3909     exit 1
3910 }
3911
3912 print_in_columns() {
3913     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3914     {
3915         num_cols = width > col_width ? int(width / col_width) : 1;
3916         num_rows = int((NF + num_cols-1) / num_cols);
3917         y = x = 1;
3918         for (y = 1; y <= num_rows; y++) {
3919             i = y;
3920             for (x = 1; x <= num_cols; x++) {
3921                 if (i <= NF) {
3922                   line = sprintf("%s%-" col_width "s", line, $i);
3923                 }
3924                 i = i + num_rows;
3925             }
3926             print line; line = "";
3927         }
3928     }' | sed 's/ *$//'
3929 }
3930
3931 show_list() {
3932     suffix=_$1
3933     shift
3934     echo $* | sed s/$suffix//g | print_in_columns
3935     exit 0
3936 }
3937
3938 rand_list(){
3939     IFS=', '
3940     set -- $*
3941     unset IFS
3942     for thing; do
3943         comp=${thing%:*}
3944         prob=${thing#$comp}
3945         prob=${prob#:}
3946         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3947         echo "prob ${prob:-0.5}"
3948         printf '%s\n' $comp
3949     done
3950 }
3951
3952 do_random(){
3953     action=$1
3954     shift
3955     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3956     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3957 }
3958
3959 for opt do
3960     optval="${opt#*=}"
3961     case "$opt" in
3962         --extra-ldflags=*)
3963             add_ldflags $optval
3964         ;;
3965         --extra-ldexeflags=*)
3966             add_ldexeflags $optval
3967         ;;
3968         --extra-ldsoflags=*)
3969             add_ldsoflags $optval
3970         ;;
3971         --extra-ldlibflags=*)
3972             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3973                  "removed in the future. Use --extra-ldsoflags instead."
3974             add_ldsoflags $optval
3975         ;;
3976         --extra-libs=*)
3977             add_extralibs $optval
3978         ;;
3979         --disable-devices)
3980             disable $INDEV_LIST $OUTDEV_LIST
3981         ;;
3982         --enable-debug=*)
3983             debuglevel="$optval"
3984         ;;
3985         --disable-programs)
3986             disable $PROGRAM_LIST
3987         ;;
3988         --disable-everything)
3989             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3990         ;;
3991         --disable-all)
3992             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3993             disable $LIBRARY_LIST $PROGRAM_LIST doc
3994             enable avutil
3995         ;;
3996         --enable-random|--disable-random)
3997             action=${opt%%-random}
3998             do_random ${action#--} $COMPONENT_LIST
3999         ;;
4000         --enable-random=*|--disable-random=*)
4001             action=${opt%%-random=*}
4002             do_random ${action#--} $optval
4003         ;;
4004         --enable-sdl)
4005             enable sdl2
4006         ;;
4007         --enable-*=*|--disable-*=*)
4008             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4009             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4010             eval list=\$$(toupper $thing)_LIST
4011             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4012             list=$(filter "$name" $list)
4013             [ "$list" = "" ] && warn "Option $opt did not match anything"
4014             test $action = enable && warn_if_gets_disabled $list
4015             $action $list
4016         ;;
4017         --enable-yasm|--disable-yasm)
4018             warn "The ${opt} option is only provided for compatibility and will be\n"\
4019                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4020             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4021         ;;
4022         --yasmexe=*)
4023             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4024                  "removed in the future. Use --x86asmexe instead."
4025             x86asmexe="$optval"
4026         ;;
4027         --enable-?*|--disable-?*)
4028             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4029             if is_in $option $COMPONENT_LIST; then
4030                 test $action = disable && action=unset
4031                 eval $action \$$(toupper ${option%s})_LIST
4032             elif is_in $option $CMDLINE_SELECT; then
4033                 $action $option
4034             else
4035                 die_unknown $opt
4036             fi
4037         ;;
4038         --list-*)
4039             NAME="${opt#--list-}"
4040             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4041             NAME=${NAME%s}
4042             eval show_list $NAME \$$(toupper $NAME)_LIST
4043         ;;
4044         --help|-h) show_help
4045         ;;
4046         --quiet|-q) quiet=yes
4047         ;;
4048         --fatal-warnings) enable fatal_warnings
4049         ;;
4050         --libfuzzer=*)
4051             libfuzzer_path="$optval"
4052         ;;
4053         *)
4054             optname="${opt%%=*}"
4055             optname="${optname#--}"
4056             optname=$(echo "$optname" | sed 's/-/_/g')
4057             if is_in $optname $CMDLINE_SET; then
4058                 eval $optname='$optval'
4059             elif is_in $optname $CMDLINE_APPEND; then
4060                 append $optname "$optval"
4061             else
4062                 die_unknown $opt
4063             fi
4064         ;;
4065     esac
4066 done
4067
4068 for e in $env; do
4069     eval "export $e"
4070 done
4071
4072 if disabled autodetect; then
4073
4074     # Unless iconv is explicitely disabled by the user, we still want to probe
4075     # for the iconv from the libc.
4076     disabled iconv || enable libc_iconv
4077
4078     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4079     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4080 fi
4081 # Mark specifically enabled, but normally autodetected libraries as requested.
4082 for lib in $AUTODETECT_LIBS; do
4083     enabled $lib && request $lib
4084 done
4085 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4086 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4087 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4088
4089 disabled logging && logfile=/dev/null
4090
4091 # command line configuration sanity checks
4092
4093 # we need to build at least one lib type
4094 if ! enabled_any static shared; then
4095     cat <<EOF
4096 At least one library type must be built.
4097 Specify --enable-static to build the static libraries or --enable-shared to
4098 build the shared libraries as well. To only build the shared libraries specify
4099 --disable-static in addition to --enable-shared.
4100 EOF
4101     exit 1
4102 fi
4103
4104 die_license_disabled() {
4105     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4106 }
4107
4108 die_license_disabled_gpl() {
4109     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4110 }
4111
4112 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4113 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4114
4115 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4116 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4117
4118 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4119
4120 if enabled nonfree; then
4121     license="nonfree and unredistributable"
4122 elif enabled gplv3; then
4123     license="GPL version 3 or later"
4124 elif enabled lgplv3; then
4125     license="LGPL version 3 or later"
4126 elif enabled gpl; then
4127     license="GPL version 2 or later"
4128 else
4129     license="LGPL version 2.1 or later"
4130 fi
4131
4132 enabled_all gnutls openssl &&
4133     die "GnuTLS and OpenSSL must not be enabled at the same time."
4134
4135 enabled_all gnutls mbedtls &&
4136     die "GnuTLS and mbedTLS must not be enabled at the same time."
4137
4138 enabled_all openssl mbedtls &&
4139     die "OpenSSL and mbedTLS must not be enabled at the same time."
4140
4141 # Disable all the library-specific components if the library itself
4142 # is disabled, see AVCODEC_LIST and following _LIST variables.
4143
4144 disable_components(){
4145     disabled ${1} && disable $(
4146         eval components="\$$(toupper ${1})_COMPONENTS"
4147         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4148     )
4149 }
4150
4151 map 'disable_components $v' $LIBRARY_LIST
4152
4153 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4154 set >> $logfile
4155
4156 test -n "$valgrind" && toolchain="valgrind-memcheck"
4157
4158 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4159     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4160     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4161 }
4162
4163 case "$toolchain" in
4164     *-asan)
4165         cc_default="${toolchain%-asan}"
4166         add_cflags  -fsanitize=address
4167         add_ldflags -fsanitize=address
4168     ;;
4169     *-msan)
4170         cc_default="${toolchain%-msan}"
4171         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4172         add_ldflags -fsanitize=memory
4173     ;;
4174     *-tsan)
4175         cc_default="${toolchain%-tsan}"
4176         add_cflags  -fsanitize=thread
4177         add_ldflags -fsanitize=thread
4178         case "$toolchain" in
4179             gcc-tsan)
4180                 add_cflags  -fPIC
4181                 add_ldflags -fPIC
4182                 ;;
4183         esac
4184     ;;
4185     *-usan)
4186         cc_default="${toolchain%-usan}"
4187         add_cflags  -fsanitize=undefined
4188         add_ldflags -fsanitize=undefined
4189     ;;
4190     valgrind-*)
4191         target_exec_default="valgrind"
4192         case "$toolchain" in
4193             valgrind-massif)
4194                 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"
4195                 ;;
4196             valgrind-memcheck)
4197                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4198                 ;;
4199         esac
4200     ;;
4201     msvc)
4202         # Check whether the current MSVC version needs the C99 converter.
4203         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4204         # support enough of C99 to build ffmpeg. Default to the new
4205         # behaviour if the regexp was unable to match anything, since this
4206         # successfully parses the version number of existing supported
4207         # versions that require the converter (MSVC 2010 and 2012).
4208         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4209         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4210             cc_default="cl.exe"
4211             cxx_default="cl.exe"
4212         else
4213             die "Unsupported MSVC version (2013 or newer required)"
4214         fi
4215         ld_default="$source_path/compat/windows/mslink"
4216         nm_default="dumpbin.exe -symbols"
4217         ar_default="lib.exe"
4218         case "$arch" in
4219         aarch64|arm64)
4220             as_default="armasm64.exe"
4221             ;;
4222         arm*)
4223             as_default="armasm.exe"
4224             ;;
4225         esac
4226         target_os_default="win32"
4227         # Use a relative path for TMPDIR. This makes sure all the
4228         # ffconf temp files are written with a relative path, avoiding
4229         # issues with msys/win32 path conversion for MSVC parameters
4230         # such as -Fo<file> or -out:<file>.
4231         TMPDIR=.
4232     ;;
4233     icl)
4234         cc_default="icl"
4235         ld_default="xilink"
4236         nm_default="dumpbin -symbols"
4237         ar_default="xilib"
4238         target_os_default="win32"
4239         TMPDIR=.
4240     ;;
4241     gcov)
4242         add_cflags  -fprofile-arcs -ftest-coverage
4243         add_ldflags -fprofile-arcs -ftest-coverage
4244     ;;
4245     llvm-cov)
4246         add_cflags -fprofile-arcs -ftest-coverage
4247         add_ldflags --coverage
4248     ;;
4249     hardened)
4250         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4251         add_cflags   -fno-strict-overflow -fstack-protector-all
4252         add_ldflags  -Wl,-z,relro -Wl,-z,now
4253         add_cflags   -fPIE
4254         add_ldexeflags -fPIE -pie
4255     ;;
4256     ?*)
4257         die "Unknown toolchain $toolchain"
4258     ;;
4259 esac
4260
4261 if test -n "$cross_prefix"; then
4262     test -n "$arch" && test -n "$target_os" ||
4263         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4264     enable cross_compile
4265 fi
4266
4267 set_default target_os
4268 if test "$target_os" = android; then
4269     cc_default="clang"
4270 fi
4271
4272 ar_default="${cross_prefix}${ar_default}"
4273 cc_default="${cross_prefix}${cc_default}"
4274 cxx_default="${cross_prefix}${cxx_default}"
4275 nm_default="${cross_prefix}${nm_default}"
4276 pkg_config_default="${cross_prefix}${pkg_config_default}"
4277 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4278     ranlib_default="${cross_prefix}${ranlib_default} -D"
4279 else
4280     ranlib_default="${cross_prefix}${ranlib_default}"
4281 fi
4282 strip_default="${cross_prefix}${strip_default}"
4283 windres_default="${cross_prefix}${windres_default}"
4284
4285 sysinclude_default="${sysroot}/usr/include"
4286
4287 if enabled cuda_sdk; then
4288     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4289     enable cuda_nvcc
4290 fi
4291
4292 if enabled cuda_nvcc; then
4293     nvcc_default="nvcc"
4294     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4295 else
4296     nvcc_default="clang"
4297     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4298     NVCC_C=""
4299 fi
4300
4301 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4302     target_exec x86asmexe nvcc
4303 enabled cross_compile || host_cc_default=$cc
4304 set_default host_cc
4305
4306 pkg_config_fail_message=""
4307 if ! $pkg_config --version >/dev/null 2>&1; then
4308     warn "$pkg_config not found, library detection may fail."
4309     pkg_config=false
4310 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4311     pkg_config_fail_message="
4312 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4313 fi
4314
4315 if test $doxygen != $doxygen_default && \
4316   ! $doxygen --version >/dev/null 2>&1; then
4317     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4318 fi
4319
4320 exesuf() {
4321     case $1 in
4322         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4323     esac
4324 }
4325
4326 EXESUF=$(exesuf $target_os)
4327 HOSTEXESUF=$(exesuf $host_os)
4328
4329 # set temporary file name
4330 : ${TMPDIR:=$TEMPDIR}
4331 : ${TMPDIR:=$TMP}
4332 : ${TMPDIR:=/tmp}
4333
4334 if [ -n "$tempprefix" ] ; then
4335     mktemp(){
4336         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4337         echo "$tmpname"
4338         mkdir "$tmpname"
4339     }
4340 elif ! test_cmd mktemp -u XXXXXX; then
4341     # simple replacement for missing mktemp
4342     # NOT SAFE FOR GENERAL USE
4343     mktemp(){
4344         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4345         echo "$tmpname"
4346         mkdir "$tmpname"
4347     }
4348 fi
4349
4350 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4351     die "Unable to create temporary directory in $TMPDIR."
4352
4353 tmpfile(){
4354     tmp="${FFTMPDIR}/test"$2
4355     (set -C; exec > $tmp) 2> /dev/null ||
4356         die "Unable to create temporary file in $FFTMPDIR."
4357     eval $1=$tmp
4358 }
4359
4360 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4361 trap 'exit 2' INT
4362
4363 tmpfile TMPASM .asm
4364 tmpfile TMPC   .c
4365 tmpfile TMPCPP .cpp
4366 tmpfile TMPE   $EXESUF
4367 tmpfile TMPH   .h
4368 tmpfile TMPM   .m
4369 tmpfile TMPCU  .cu
4370 tmpfile TMPO   .o
4371 tmpfile TMPS   .S
4372 tmpfile TMPSH  .sh
4373 tmpfile TMPV   .ver
4374
4375 unset -f mktemp
4376
4377 chmod +x $TMPE
4378
4379 # make sure we can execute files in $TMPDIR
4380 cat > $TMPSH 2>> $logfile <<EOF
4381 #! /bin/sh
4382 EOF
4383 chmod +x $TMPSH >> $logfile 2>&1
4384 if ! $TMPSH >> $logfile 2>&1; then
4385     cat <<EOF
4386 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4387 variable to another directory and make sure that it is not mounted noexec.
4388 EOF
4389     die "Sanity test failed."
4390 fi
4391
4392 armasm_flags(){
4393     for flag; do
4394         case $flag in
4395             # Filter out MSVC cl.exe options from cflags that shouldn't
4396             # be passed to gas-preprocessor
4397             -M[TD]*)                                            ;;
4398             *)                  echo $flag                      ;;
4399         esac
4400    done
4401 }
4402
4403 cparser_flags(){
4404     for flag; do
4405         case $flag in
4406             -Wno-switch)             echo -Wno-switch-enum ;;
4407             -Wno-format-zero-length) ;;
4408             -Wdisabled-optimization) ;;
4409             -Wno-pointer-sign)       echo -Wno-other ;;
4410             *)                       echo $flag ;;
4411         esac
4412     done
4413 }
4414
4415 msvc_common_flags(){
4416     for flag; do
4417         case $flag in
4418             # In addition to specifying certain flags under the compiler
4419             # specific filters, they must be specified here as well or else the
4420             # generic catch all at the bottom will print the original flag.
4421             -Wall)                ;;
4422             -Wextra)              ;;
4423             -std=c*)              ;;
4424             # Common flags
4425             -fomit-frame-pointer) ;;
4426             -g)                   echo -Z7 ;;
4427             -fno-math-errno)      ;;
4428             -fno-common)          ;;
4429             -fno-signed-zeros)    ;;
4430             -fPIC)                ;;
4431             -mthumb)              ;;
4432             -march=*)             ;;
4433             -lz)                  echo zlib.lib ;;
4434             -lx264)               echo libx264.lib ;;
4435             -lstdc++)             ;;
4436             -l*)                  echo ${flag#-l}.lib ;;
4437             -LARGEADDRESSAWARE)   echo $flag ;;
4438             -L*)                  echo -libpath:${flag#-L} ;;
4439             *)                    echo $flag ;;
4440         esac
4441     done
4442 }
4443
4444 msvc_flags(){
4445     msvc_common_flags "$@"
4446     for flag; do
4447         case $flag in
4448             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4449                                        -wd4554 ;;
4450             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4451                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4452                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4453                                        -wd4307 \
4454                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4455         esac
4456     done
4457 }
4458
4459 icl_flags(){
4460     msvc_common_flags "$@"
4461     for flag; do
4462         case $flag in
4463             # Despite what Intel's documentation says -Wall, which is supported
4464             # on Windows, does enable remarks so disable them here.
4465             -Wall)                echo $flag -Qdiag-disable:remark ;;
4466             -std=c99)             echo -Qstd=c99 ;;
4467             -flto)                echo -ipo ;;
4468         esac
4469     done
4470 }
4471
4472 icc_flags(){
4473     for flag; do
4474         case $flag in
4475             -flto)                echo -ipo ;;
4476             *)                    echo $flag ;;
4477         esac
4478     done
4479 }
4480
4481 suncc_flags(){
4482     for flag; do
4483         case $flag in
4484             -march=*|-mcpu=*)
4485                 case "${flag#*=}" in
4486                     native)                   echo -xtarget=native       ;;
4487                     v9|niagara)               echo -xarch=sparc          ;;
4488                     ultrasparc)               echo -xarch=sparcvis       ;;
4489                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4490                     i586|pentium)             echo -xchip=pentium        ;;
4491                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4492                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4493                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4494                     pentium4*)          echo -xtarget=pentium4           ;;
4495                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4496                     *-sse3)             echo -xarch=sse3                 ;;
4497                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4498                     bonnell)                   echo -xarch=ssse3         ;;
4499                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4500                     westmere)                  echo -xtarget=westmere    ;;
4501                     silvermont)                echo -xarch=sse4_2        ;;
4502                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4503                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4504                                                echo -xarch=avx           ;;
4505                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4506                     btver1)                    echo -xarch=amdsse4a      ;;
4507                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4508                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4509                     k8|opteron|athlon64|athlon-fx)
4510                                                echo -xarch=sse2a         ;;
4511                     athlon*)                   echo -xarch=pentium_proa  ;;
4512                 esac
4513                 ;;
4514             -std=c99)             echo -xc99              ;;
4515             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4516             -fPIC)                echo -KPIC -xcode=pic32 ;;
4517             -W*,*)                echo $flag              ;;
4518             -f*-*|-W*|-mimpure-text)                      ;;
4519             -shared)              echo -G                 ;;
4520             *)                    echo $flag              ;;
4521         esac
4522     done
4523 }
4524
4525 probe_cc(){
4526     pfx=$1
4527     _cc=$2
4528     first=$3
4529
4530     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4531     unset _ld_o _ldflags _ld_lib _ld_path
4532     unset _depflags _DEPCMD _DEPFLAGS
4533     _flags_filter=echo
4534
4535     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4536         true # no-op to avoid reading stdin in following checks
4537     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4538         _type=llvm_gcc
4539         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4540         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4541         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4542         _cflags_speed='-O3'
4543         _cflags_size='-Os'
4544     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4545         _type=gcc
4546         gcc_version=$($_cc --version | head -n1)
4547         gcc_basever=$($_cc -dumpversion)
4548         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4549         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4550         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4551         case $gcc_basever in
4552             2) ;;
4553             2.*) ;;
4554             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4555         esac
4556         if [ "$first" = true ]; then
4557             case $gcc_basever in
4558                 4.2*)
4559                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4560             esac
4561         fi
4562         _cflags_speed='-O3'
4563         _cflags_size='-Os'
4564     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4565         _type=icc
4566         _ident=$($_cc --version | head -n1)
4567         _depflags='-MMD'
4568         _cflags_speed='-O3'
4569         _cflags_size='-Os'
4570         _cflags_noopt='-O1'
4571         _flags_filter=icc_flags
4572     elif $_cc -v 2>&1 | grep -q xlc; then
4573         _type=xlc
4574         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4575         _cflags_speed='-O5'
4576         _cflags_size='-O5 -qcompact'
4577     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4578         test -d "$sysroot" || die "No valid sysroot specified."
4579         _type=armcc
4580         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4581         armcc_conf="$PWD/armcc.conf"
4582         $_cc --arm_linux_configure                 \
4583              --arm_linux_config_file="$armcc_conf" \
4584              --configure_sysroot="$sysroot"        \
4585              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4586              die "Error creating armcc configuration file."
4587         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4588         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4589         as_default="${cross_prefix}gcc"
4590         _depflags='-MMD'
4591         _cflags_speed='-O3'
4592         _cflags_size='-Os'
4593     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4594         _type=clang
4595         _ident=$($_cc --version 2>/dev/null | head -n1)
4596         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4597         _cflags_speed='-O3'
4598         _cflags_size='-Oz'
4599     elif $_cc -V 2>&1 | grep -q Sun; then
4600         _type=suncc
4601         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4602         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4603         _DEPFLAGS='-xM1 -xc99'
4604         _ldflags='-std=c99'
4605         _cflags_speed='-O5'
4606         _cflags_size='-O5 -xspace'
4607         _flags_filter=suncc_flags
4608     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4609         _type=pathscale
4610         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4611         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4612         _cflags_speed='-O2'
4613         _cflags_size='-Os'
4614         _flags_filter='filter_out -Wdisabled-optimization'
4615     elif $_cc -v 2>&1 | grep -q Open64; then
4616         _type=open64
4617         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4618         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4619         _cflags_speed='-O2'
4620         _cflags_size='-Os'
4621         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4622     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4623         _type=armasm
4624         _ident=$($_cc | head -n1)
4625         # 4509: "This form of conditional instruction is deprecated"
4626         _flags="-nologo -ignore 4509"
4627         _flags_filter=armasm_flags
4628     elif $_cc 2>&1 | grep -q Intel; then
4629         _type=icl
4630         _ident=$($_cc 2>&1 | head -n1)
4631         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4632         # Not only is O3 broken on 13.x+ but it is slower on all previous
4633         # versions (tested) as well.
4634         _cflags_speed="-O2"
4635         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4636         if $_cc 2>&1 | grep -q Linker; then
4637             _ld_o='-out:$@'
4638         else
4639             _ld_o='-Fe$@'
4640         fi
4641         _cc_o='-Fo$@'
4642         _cc_e='-P'
4643         _flags_filter=icl_flags
4644         _ld_lib='lib%.a'
4645         _ld_path='-libpath:'
4646         # -Qdiag-error to make icl error when seeing certain unknown arguments
4647         _flags='-nologo -Qdiag-error:4044,10157'
4648         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4649         # with MSVC which enables it by default.
4650         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4651         disable stripping
4652     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4653         # lld can emulate multiple different linkers; in ms link.exe mode,
4654         # the -? parameter gives the help output which contains an identifyable
4655         # string, while it gives an error in other modes.
4656         _type=lld-link
4657         # The link.exe mode doesn't have a switch for getting the version,
4658         # but we can force it back to gnu mode and get the version from there.
4659         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4660         _ld_o='-out:$@'
4661         _flags_filter=msvc_flags
4662         _ld_lib='lib%.a'
4663         _ld_path='-libpath:'
4664     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4665         _type=msvc
4666         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4667         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4668         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4669         _cflags_speed="-O2"
4670         _cflags_size="-O1"
4671         _cflags_noopt="-O1"
4672         if $_cc -nologo- 2>&1 | grep -q Linker; then
4673             _ld_o='-out:$@'
4674         else
4675             _ld_o='-Fe$@'
4676         fi
4677         _cc_o='-Fo$@'
4678         _cc_e='-P -Fi$@'
4679         _flags_filter=msvc_flags
4680         _ld_lib='lib%.a'
4681         _ld_path='-libpath:'
4682         _flags='-nologo'
4683         disable stripping
4684     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4685         _type=cparser
4686         _ident=$($_cc --version | head -n1)
4687         _depflags='-MMD'
4688         _cflags_speed='-O4'
4689         _cflags_size='-O2'
4690         _flags_filter=cparser_flags
4691     fi
4692
4693     eval ${pfx}_type=\$_type
4694     eval ${pfx}_ident=\$_ident
4695 }
4696
4697 set_ccvars(){
4698     eval ${1}_C=\${_cc_c-\${${1}_C}}
4699     eval ${1}_E=\${_cc_e-\${${1}_E}}
4700     eval ${1}_O=\${_cc_o-\${${1}_O}}
4701
4702     if [ -n "$_depflags" ]; then
4703         eval ${1}_DEPFLAGS=\$_depflags
4704     else
4705         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4706         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4707         eval DEP${1}FLAGS=\$_flags
4708     fi
4709 }
4710
4711 probe_cc cc "$cc" "true"
4712 cflags_filter=$_flags_filter
4713 cflags_speed=$_cflags_speed
4714 cflags_size=$_cflags_size
4715 cflags_noopt=$_cflags_noopt
4716 add_cflags $_flags $_cflags
4717 cc_ldflags=$_ldflags
4718 set_ccvars CC
4719 set_ccvars CXX
4720
4721 probe_cc hostcc "$host_cc"
4722 host_cflags_filter=$_flags_filter
4723 host_cflags_speed=$_cflags_speed
4724 add_host_cflags  $_flags $_cflags
4725 set_ccvars HOSTCC
4726
4727 test -n "$cc_type" && enable $cc_type ||
4728     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4729
4730 : ${as_default:=$cc}
4731 : ${objcc_default:=$cc}
4732 : ${dep_cc_default:=$cc}
4733 : ${ld_default:=$cc}
4734 : ${host_ld_default:=$host_cc}
4735 set_default ar as objcc dep_cc ld ln_s host_ld windres
4736
4737 probe_cc as "$as"
4738 asflags_filter=$_flags_filter
4739 add_asflags $_flags $_cflags
4740 set_ccvars AS
4741
4742 probe_cc objcc "$objcc"
4743 objcflags_filter=$_flags_filter
4744 add_objcflags $_flags $_cflags
4745 set_ccvars OBJC
4746
4747 probe_cc ld "$ld"
4748 ldflags_filter=$_flags_filter
4749 add_ldflags $_flags $_ldflags
4750 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4751 LD_O=${_ld_o-$LD_O}
4752 LD_LIB=${_ld_lib-$LD_LIB}
4753 LD_PATH=${_ld_path-$LD_PATH}
4754
4755 probe_cc hostld "$host_ld"
4756 host_ldflags_filter=$_flags_filter
4757 add_host_ldflags $_flags $_ldflags
4758 HOSTLD_O=${_ld_o-$HOSTLD_O}
4759
4760 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4761     probe_cc depcc "$dep_cc"
4762     CCDEP=${_DEPCMD:-$DEPCMD}
4763     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4764     DEPCCFLAGS=$_flags
4765 fi
4766
4767 if $ar 2>&1 | grep -q Microsoft; then
4768     arflags="-nologo"
4769     ar_o='-out:$@'
4770 elif $ar 2>&1 | grep -q "\[D\] "; then
4771     arflags="rcD"
4772     ar_o='$@'
4773 else
4774     arflags="rc"
4775     ar_o='$@'
4776 fi
4777
4778 add_cflags $extra_cflags
4779 add_cxxflags $extra_cxxflags
4780 add_objcflags $extra_objcflags
4781 add_asflags $extra_cflags
4782
4783 if test -n "$sysroot"; then
4784     case "$cc_type" in
4785         gcc|llvm_gcc|clang)
4786             add_cppflags --sysroot="$sysroot"
4787             add_ldflags --sysroot="$sysroot"
4788         ;;
4789     esac
4790 fi
4791
4792 if test "$cpu" = host; then
4793     enabled cross_compile &&
4794         die "--cpu=host makes no sense when cross-compiling."
4795
4796     case "$cc_type" in
4797         gcc|llvm_gcc)
4798             check_native(){
4799                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4800                 sed -n "/cc1.*$1=/{
4801                             s/.*$1=\\([^ ]*\\).*/\\1/
4802                             p
4803                             q
4804                         }" $TMPE
4805             }
4806             cpu=$(check_native -march || check_native -mcpu)
4807         ;;
4808         clang)
4809             check_native(){
4810                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4811                 sed -n "/cc1.*-target-cpu /{
4812                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4813                             p
4814                             q
4815                         }" $TMPE
4816             }
4817             cpu=$(check_native -march)
4818         ;;
4819     esac
4820
4821     test "${cpu:-host}" = host &&
4822         die "--cpu=host not supported with compiler $cc"
4823 fi
4824
4825 # Deal with common $arch aliases
4826 case "$arch" in
4827     aarch64|arm64)
4828         arch="aarch64"
4829     ;;
4830     arm*|iPad*|iPhone*)
4831         arch="arm"
4832     ;;
4833     mips*|IP*)
4834         case "$arch" in
4835         *el)
4836             add_cppflags -EL
4837             add_ldflags -EL
4838         ;;
4839         *eb)
4840             add_cppflags -EB
4841             add_ldflags -EB
4842         ;;
4843         esac
4844         arch="mips"
4845     ;;
4846     parisc*|hppa*)
4847         arch="parisc"
4848     ;;
4849     "Power Macintosh"|ppc*|powerpc*)
4850         arch="ppc"
4851     ;;
4852     s390|s390x)
4853         arch="s390"
4854     ;;
4855     sh4|sh)
4856         arch="sh4"
4857     ;;
4858     sun4*|sparc*)
4859         arch="sparc"
4860     ;;
4861     tilegx|tile-gx)
4862         arch="tilegx"
4863     ;;
4864     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4865         arch="x86"
4866     ;;
4867 esac
4868
4869 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4870 enable $arch
4871
4872 # Add processor-specific flags
4873 if enabled aarch64; then
4874
4875     case $cpu in
4876         armv*)
4877             cpuflags="-march=$cpu"
4878         ;;
4879         *)
4880             cpuflags="-mcpu=$cpu"
4881         ;;
4882     esac
4883
4884 elif enabled alpha; then
4885
4886     cpuflags="-mcpu=$cpu"
4887
4888 elif enabled arm; then
4889
4890     check_arm_arch() {
4891         test_cpp_condition stddef.h \
4892             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4893             $cpuflags
4894     }
4895
4896     probe_arm_arch() {
4897         if   check_arm_arch 4;        then echo armv4
4898         elif check_arm_arch 4T;       then echo armv4t
4899         elif check_arm_arch 5;        then echo armv5
4900         elif check_arm_arch 5E;       then echo armv5e
4901         elif check_arm_arch 5T;       then echo armv5t
4902         elif check_arm_arch 5TE;      then echo armv5te
4903         elif check_arm_arch 5TEJ;     then echo armv5te
4904         elif check_arm_arch 6;        then echo armv6
4905         elif check_arm_arch 6J;       then echo armv6j
4906         elif check_arm_arch 6K;       then echo armv6k
4907         elif check_arm_arch 6Z;       then echo armv6z
4908         elif check_arm_arch 6KZ;      then echo armv6zk
4909         elif check_arm_arch 6ZK;      then echo armv6zk
4910         elif check_arm_arch 6T2;      then echo armv6t2
4911         elif check_arm_arch 7;        then echo armv7
4912         elif check_arm_arch 7A  7_A;  then echo armv7-a
4913         elif check_arm_arch 7S;       then echo armv7-a
4914         elif check_arm_arch 7R  7_R;  then echo armv7-r
4915         elif check_arm_arch 7M  7_M;  then echo armv7-m
4916         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4917         elif check_arm_arch 8A  8_A;  then echo armv8-a
4918         fi
4919     }
4920
4921     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4922
4923     case $cpu in
4924         armv*)
4925             cpuflags="-march=$cpu"
4926             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4927         ;;
4928         *)
4929             cpuflags="-mcpu=$cpu"
4930             case $cpu in
4931                 cortex-a*)                               subarch=armv7a  ;;
4932                 cortex-r*)                               subarch=armv7r  ;;
4933                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4934                 arm11*)                                  subarch=armv6   ;;
4935                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4936                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4937                 *)                             subarch=$(probe_arm_arch) ;;
4938             esac
4939         ;;
4940     esac
4941
4942     case "$subarch" in
4943         armv5t*)    enable fast_clz                ;;
4944         armv[6-8]*)
4945             enable fast_clz
4946             disabled fast_unaligned || enable fast_unaligned
4947             ;;
4948     esac
4949
4950 elif enabled avr32; then
4951
4952     case $cpu in
4953         ap7[02]0[0-2])
4954             subarch="avr32_ap"
4955             cpuflags="-mpart=$cpu"
4956         ;;
4957         ap)
4958             subarch="avr32_ap"
4959             cpuflags="-march=$cpu"
4960         ;;
4961         uc3[ab]*)
4962             subarch="avr32_uc"
4963             cpuflags="-mcpu=$cpu"
4964         ;;
4965         uc)
4966             subarch="avr32_uc"
4967             cpuflags="-march=$cpu"
4968         ;;
4969     esac
4970
4971 elif enabled bfin; then
4972
4973     cpuflags="-mcpu=$cpu"
4974
4975 elif enabled mips; then
4976
4977     cpuflags="-march=$cpu"
4978
4979     if [ "$cpu" != "generic" ]; then
4980         disable mips32r2
4981         disable mips32r5
4982         disable mips64r2
4983         disable mips32r6
4984         disable mips64r6
4985         disable loongson2
4986         disable loongson3
4987
4988         case $cpu in
4989             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4990                 enable mips32r2
4991                 disable msa
4992             ;;
4993             p5600|i6400|p6600)
4994                 disable mipsdsp
4995                 disable mipsdspr2
4996             ;;
4997             loongson*)
4998                 enable loongson2
4999                 enable loongson3
5000                 enable local_aligned
5001                 enable simd_align_16
5002                 enable fast_64bit
5003                 enable fast_clz
5004                 enable fast_cmov
5005                 enable fast_unaligned
5006                 disable aligned_stack
5007                 disable mipsdsp
5008                 disable mipsdspr2
5009                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5010                 if [ $cc == gcc ]; then
5011                     gcc_version=$(gcc -dumpversion)
5012                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5013                         expensive_optimization_flag=""
5014                     else
5015                         expensive_optimization_flag="-fno-expensive-optimizations"
5016                     fi
5017                 fi
5018                 case $cpu in
5019                     loongson3*)
5020                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5021                     ;;
5022                     loongson2e)
5023                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5024                     ;;
5025                     loongson2f)
5026                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5027                     ;;
5028                 esac
5029             ;;
5030             *)
5031                 # Unknown CPU. Disable everything.
5032                 warn "unknown CPU. Disabling all MIPS optimizations."
5033                 disable mipsfpu
5034                 disable mipsdsp
5035                 disable mipsdspr2
5036                 disable msa
5037                 disable mmi
5038             ;;
5039         esac
5040
5041         case $cpu in
5042             24kc)
5043                 disable mipsfpu
5044                 disable mipsdsp
5045                 disable mipsdspr2
5046             ;;
5047             24kf*)
5048                 disable mipsdsp
5049                 disable mipsdspr2
5050             ;;
5051             24kec|34kc|1004kc)
5052                 disable mipsfpu
5053                 disable mipsdspr2
5054             ;;
5055             24kef*|34kf*|1004kf*)
5056                 disable mipsdspr2
5057             ;;
5058             74kc)
5059                 disable mipsfpu
5060             ;;
5061             p5600)
5062                 enable mips32r5
5063                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5064             ;;
5065             i6400)
5066                 enable mips64r6
5067                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5068             ;;
5069             p6600)
5070                 enable mips64r6
5071                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5072             ;;
5073         esac
5074     else
5075         # We do not disable anything. Is up to the user to disable the unwanted features.
5076         warn 'generic cpu selected'
5077     fi
5078
5079 elif enabled ppc; then
5080
5081     disable ldbrx
5082
5083     case $(tolower $cpu) in
5084         601|ppc601|powerpc601)
5085             cpuflags="-mcpu=601"
5086             disable altivec
5087         ;;
5088         603*|ppc603*|powerpc603*)
5089             cpuflags="-mcpu=603"
5090             disable altivec
5091         ;;
5092         604*|ppc604*|powerpc604*)
5093             cpuflags="-mcpu=604"
5094             disable altivec
5095         ;;
5096         g3|75*|ppc75*|powerpc75*)
5097             cpuflags="-mcpu=750"
5098             disable altivec
5099         ;;
5100         g4|745*|ppc745*|powerpc745*)
5101             cpuflags="-mcpu=7450"
5102             disable vsx
5103         ;;
5104         74*|ppc74*|powerpc74*)
5105             cpuflags="-mcpu=7400"
5106             disable vsx
5107         ;;
5108         g5|970|ppc970|powerpc970)
5109             cpuflags="-mcpu=970"
5110             disable vsx
5111         ;;
5112         power[3-6]*)
5113             cpuflags="-mcpu=$cpu"
5114             disable vsx
5115         ;;
5116         power[7-8]*)
5117             cpuflags="-mcpu=$cpu"
5118         ;;
5119         cell)
5120             cpuflags="-mcpu=cell"
5121             enable ldbrx
5122             disable vsx
5123         ;;
5124         e500mc)
5125             cpuflags="-mcpu=e500mc"
5126             disable altivec
5127         ;;
5128         e500v2)
5129             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5130             disable altivec
5131             disable dcbzl
5132         ;;
5133         e500)
5134             cpuflags="-mcpu=8540 -mhard-float"
5135             disable altivec
5136             disable dcbzl
5137         ;;
5138     esac
5139
5140 elif enabled sparc; then
5141
5142     case $cpu in
5143         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5144             cpuflags="-mcpu=$cpu"
5145         ;;
5146         ultrasparc*|niagara[234])
5147             cpuflags="-mcpu=$cpu"
5148         ;;
5149     esac
5150
5151 elif enabled x86; then
5152
5153     case $cpu in
5154         i[345]86|pentium)
5155             cpuflags="-march=$cpu"
5156             disable i686
5157             disable mmx
5158         ;;
5159         # targets that do NOT support nopl and conditional mov (cmov)
5160         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5161             cpuflags="-march=$cpu"
5162             disable i686
5163         ;;
5164         # targets that do support nopl and conditional mov (cmov)
5165         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5166         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5167         |amdfam10|barcelona|b[dt]ver*|znver*)
5168             cpuflags="-march=$cpu"
5169             enable i686
5170             enable fast_cmov
5171         ;;
5172         # targets that do support conditional mov but on which it's slow
5173         pentium4|pentium4m|prescott|nocona)
5174             cpuflags="-march=$cpu"
5175             enable i686
5176             disable fast_cmov
5177         ;;
5178     esac
5179
5180 fi
5181
5182 if [ "$cpu" != generic ]; then
5183     add_cflags  $cpuflags
5184     add_asflags $cpuflags
5185     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5186 fi
5187
5188 # compiler sanity check
5189 test_exec <<EOF
5190 int main(void){ return 0; }
5191 EOF
5192 if test "$?" != 0; then
5193     echo "$cc is unable to create an executable file."
5194     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5195         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5196         echo "Only do this if you know what cross compiling means."
5197     fi
5198     die "C compiler test failed."
5199 fi
5200
5201 add_cppflags -D_ISOC99_SOURCE
5202 add_cxxflags -D__STDC_CONSTANT_MACROS
5203 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5204
5205 # some compilers silently accept -std=c11, so we also need to check that the
5206 # version macro is defined properly
5207 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5208     add_cflags -std=c11 ||
5209     check_cflags -std=c99
5210
5211 check_cppflags -D_FILE_OFFSET_BITS=64
5212 check_cppflags -D_LARGEFILE_SOURCE
5213
5214 add_host_cppflags -D_ISOC99_SOURCE
5215 check_host_cflags -std=c99
5216 check_host_cflags -Wall
5217 check_host_cflags $host_cflags_speed
5218
5219 check_64bit(){
5220     arch32=$1
5221     arch64=$2
5222     expr=${3:-'sizeof(void *) > 4'}
5223     test_code cc "" "int test[2*($expr) - 1]" &&
5224         subarch=$arch64 || subarch=$arch32
5225     enable $subarch
5226 }
5227
5228 case "$arch" in
5229     aarch64|alpha|ia64)
5230         enabled shared && enable_weak pic
5231     ;;
5232     mips)
5233         check_64bit mips mips64 '_MIPS_SIM > 1'
5234         enabled shared && enable_weak pic
5235     ;;
5236     parisc)
5237         check_64bit parisc parisc64
5238         enabled shared && enable_weak pic
5239     ;;
5240     ppc)
5241         check_64bit ppc ppc64
5242         enabled shared && enable_weak pic
5243     ;;
5244     s390)
5245         check_64bit s390 s390x
5246         enabled shared && enable_weak pic
5247     ;;
5248     sparc)
5249         check_64bit sparc sparc64
5250         enabled shared && enable_weak pic
5251     ;;
5252     x86)
5253         check_64bit x86_32 x86_64
5254         # Treat x32 as x64 for now. Note it also needs pic if shared
5255         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5256             subarch=x86_64 && enable x86_64 && disable x86_32
5257         if enabled x86_64; then
5258             enabled shared && enable_weak pic
5259             objformat=elf64
5260         fi
5261     ;;
5262 esac
5263
5264 # OS specific
5265 case $target_os in
5266     aix)
5267         SHFLAGS=-shared
5268         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5269         enabled shared && add_ldflags -Wl,-brtl
5270         arflags='-Xany -r -c'
5271         striptype=""
5272         ;;
5273     android)
5274         disable symver
5275         enable section_data_rel_ro
5276         add_cflags -fPIE
5277         add_ldexeflags -fPIE -pie
5278         SLIB_INSTALL_NAME='$(SLIBNAME)'
5279         SLIB_INSTALL_LINKS=
5280         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5281         ;;
5282     haiku)
5283         prefix_default="/boot/common"
5284         network_extralibs="-lnetwork"
5285         host_extralibs=
5286         ;;
5287     sunos)
5288         SHFLAGS='-shared -Wl,-h,$$(@F)'
5289         enabled x86 && append SHFLAGS -mimpure-text
5290         network_extralibs="-lsocket -lnsl"
5291         add_cppflags -D__EXTENSIONS__
5292         # When using suncc to build, the Solaris linker will mark
5293         # an executable with each instruction set encountered by
5294         # the Solaris assembler.  As our libraries contain their own
5295         # guards for processor-specific code, instead suppress
5296         # generation of the HWCAPS ELF section on Solaris x86 only.
5297         enabled_all suncc x86 &&
5298             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5299             add_ldflags -Wl,-M,mapfile
5300         nm_default='nm -P -g'
5301         striptype=""
5302         version_script='-M'
5303         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5304         ;;
5305     netbsd)
5306         disable symver
5307         oss_indev_extralibs="-lossaudio"
5308         oss_outdev_extralibs="-lossaudio"
5309         enabled gcc || check_ldflags -Wl,-zmuldefs
5310         ;;
5311     openbsd|bitrig)
5312         disable symver
5313         enable section_data_rel_ro
5314         striptype=""
5315         SHFLAGS='-shared'
5316         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5317         SLIB_INSTALL_LINKS=
5318         oss_indev_extralibs="-lossaudio"
5319         oss_outdev_extralibs="-lossaudio"
5320         ;;
5321     dragonfly)
5322         disable symver
5323         ;;
5324     freebsd)
5325         ;;
5326     bsd/os)
5327         add_extralibs -lpoll -lgnugetopt
5328         strip="strip -d"
5329         ;;
5330     darwin)
5331         enabled ppc && add_asflags -force_cpusubtype_ALL
5332         install_name_dir_default='$(SHLIBDIR)'
5333         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5334         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5335         strip="${strip} -x"
5336         add_ldflags -Wl,-dynamic,-search_paths_first
5337         check_cflags -Werror=partial-availability
5338         SLIBSUF=".dylib"
5339         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5340         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5341         enabled x86_64 && objformat="macho64" || objformat="macho32"
5342         enabled_any pic shared x86_64 ||
5343             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5344         check_headers dispatch/dispatch.h &&
5345             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5346         if test -n "$sysroot"; then
5347             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5348             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5349         fi
5350         version_script='-exported_symbols_list'
5351         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5352         ;;
5353     msys*)
5354         die "Native MSYS builds are discouraged, please use the MINGW environment."
5355         ;;
5356     mingw32*|mingw64*)
5357         target_os=mingw32
5358         LIBTARGET=i386
5359         if enabled x86_64; then
5360             LIBTARGET="i386:x86-64"
5361         elif enabled arm; then
5362             LIBTARGET="arm"
5363         elif enabled aarch64; then
5364             LIBTARGET="arm64"
5365         fi
5366         if enabled shared; then
5367             # Cannot build both shared and static libs when using dllimport.
5368             disable static
5369         fi
5370         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5371         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5372         shlibdir_default="$bindir_default"
5373         SLIBPREF=""
5374         SLIBSUF=".dll"
5375         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5376         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5377         if test_cmd lib.exe -list; then
5378             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5379             if enabled x86_64; then
5380                 LIBTARGET=x64
5381             fi
5382         else
5383             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5384         fi
5385         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5386         SLIB_INSTALL_LINKS=
5387         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5388         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5389         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5390         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5391         enabled x86_64 && objformat="win64" || objformat="win32"
5392         dlltool="${cross_prefix}dlltool"
5393         ranlib=:
5394         enable dos_paths
5395         check_ldflags -Wl,--nxcompat,--dynamicbase
5396         # Lets work around some stupidity in binutils.
5397         # ld will strip relocations from executables even though we need them
5398         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5399         # however ld then forgets what the entry point should be (oops) so we
5400         # have to manually (re)set it.
5401         if enabled x86_32; then
5402             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5403         elif enabled x86_64; then
5404             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5405             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5406             # Set image base >4GB for extra entropy with HEASLR
5407             add_ldexeflags -Wl,--image-base,0x140000000
5408             append SHFLAGS -Wl,--image-base,0x180000000
5409         fi
5410         ;;
5411     win32|win64)
5412         disable symver
5413         if enabled shared; then
5414             # Link to the import library instead of the normal static library
5415             # for shared libs.
5416             LD_LIB='%.lib'
5417             # Cannot build both shared and static libs with MSVC or icl.
5418             disable static
5419         fi
5420         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5421         shlibdir_default="$bindir_default"
5422         SLIBPREF=""
5423         SLIBSUF=".dll"
5424         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5425         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5426         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5427         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5428         SLIB_INSTALL_LINKS=
5429         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5430         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5431         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5432         enabled x86_64 && objformat="win64" || objformat="win32"
5433         ranlib=:
5434         enable dos_paths
5435         ;;
5436     cygwin*)
5437         target_os=cygwin
5438         shlibdir_default="$bindir_default"
5439         SLIBPREF="cyg"
5440         SLIBSUF=".dll"
5441         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5442         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5443         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5444         SLIB_INSTALL_LINKS=
5445         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5446         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5447         enabled x86_64 && objformat="win64" || objformat="win32"
5448         enable dos_paths
5449         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5450         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5451         ;;
5452     *-dos|freedos|opendos)
5453         network_extralibs="-lsocket"
5454         objformat="coff"
5455         enable dos_paths
5456         ;;
5457     linux)
5458         enable section_data_rel_ro
5459         enabled_any arm aarch64 && enable_weak linux_perf
5460         ;;
5461     irix*)
5462         target_os=irix
5463         ranlib="echo ignoring ranlib"
5464         ;;
5465     os/2*)
5466         strip="lxlite -CS"
5467         striptype=""
5468         objformat="aout"
5469         add_cppflags -D_GNU_SOURCE
5470         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5471         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5472         LIBSUF="_s.a"
5473         SLIBPREF=""
5474         SLIBSUF=".dll"
5475         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5476         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5477         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5478             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5479             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5480             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5481             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5482         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5483             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5484         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5485         SLIB_INSTALL_LINKS=
5486         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5487         enable dos_paths
5488         enable_weak os2threads
5489         ;;
5490     gnu/kfreebsd)
5491         add_cppflags -D_BSD_SOURCE
5492         ;;
5493     gnu)
5494         ;;
5495     qnx)
5496         add_cppflags -D_QNX_SOURCE
5497         network_extralibs="-lsocket"
5498         ;;
5499     symbian)
5500         SLIBSUF=".dll"
5501         enable dos_paths
5502         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5503         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5504         add_ldflags -Wl,--target1-abs,--no-undefined \
5505                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5506                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5507         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5508                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5509                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5510         ;;
5511     minix)
5512         ;;
5513     none)
5514         ;;
5515     *)
5516         die "Unknown OS '$target_os'."
5517         ;;
5518 esac
5519
5520 # test if creating links works
5521 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5522 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5523 mkdir "$link_dest"
5524 $ln_s "$link_dest" "$link_name"
5525 touch "$link_dest/test_file"
5526 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5527     # create link to source path
5528     [ -e src ] && rm src
5529     $ln_s "$source_path" src
5530     source_link=src
5531 else
5532     # creating directory links doesn't work
5533     # fall back to using the full source path
5534     source_link="$source_path"
5535 fi
5536 # cleanup
5537 rm -r "$link_dest"
5538 rm -r "$link_name"
5539
5540 # determine libc flavour
5541
5542 probe_libc(){
5543     pfx=$1
5544     pfx_no_=${pfx%_}
5545     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5546     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5547         eval ${pfx}libc_type=uclibc
5548         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5549     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5550         eval ${pfx}libc_type=glibc
5551         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5552     # MinGW headers can be installed on Cygwin, so check for newlib first.
5553     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5554         eval ${pfx}libc_type=newlib
5555         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5556     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5557     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5558         eval ${pfx}libc_type=mingw64
5559         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5560             add_compat msvcrt/snprintf.o
5561             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5562         fi
5563         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5564         eval test \$${pfx_no_}cc_type = "gcc" &&
5565             add_${pfx}cppflags -D__printf__=__gnu_printf__
5566         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5567             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5568         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5569     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5570          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5571         eval ${pfx}libc_type=mingw32
5572         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5573             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5574             die "ERROR: MinGW32 runtime version must be >= 3.15."
5575         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5576         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5577             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5578         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5579             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5580         eval test \$${pfx_no_}cc_type = "gcc" &&
5581             add_${pfx}cppflags -D__printf__=__gnu_printf__
5582         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5583     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5584         eval ${pfx}libc_type=msvcrt
5585         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5586             if [ "$pfx" = host_ ]; then
5587                 add_host_cppflags -Dsnprintf=_snprintf
5588             else
5589                 add_compat strtod.o strtod=avpriv_strtod
5590                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5591                                              _snprintf=avpriv_snprintf  \
5592                                              vsnprintf=avpriv_vsnprintf
5593             fi
5594         fi
5595         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5596         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5597         # 0x601 by default unless something else is set by the user.
5598         # This can easily lead to us detecting functions only present
5599         # in such new versions and producing binaries requiring windows 7.0.
5600         # Therefore explicitly set the default to Vista unless the user has
5601         # set something else on the command line.
5602         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5603         # family. For these cases, configure is free to use any functions
5604         # found in the SDK headers by default. (Alternatively, we could force
5605         # _WIN32_WINNT to 0x0602 in that case.)
5606         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5607             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5608 #ifdef WINAPI_FAMILY
5609 #include <winapifamily.h>
5610 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5611 #error not desktop
5612 #endif
5613 #endif
5614 EOF
5615         if [ "$pfx" = "" ]; then
5616             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5617             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5618         fi
5619     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5620         eval ${pfx}libc_type=klibc
5621     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5622         eval ${pfx}libc_type=bionic
5623     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5624         eval ${pfx}libc_type=solaris
5625         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5626     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5627         eval ${pfx}libc_type=djgpp
5628         add_cppflags -U__STRICT_ANSI__
5629         add_cflags "-include $source_path/compat/djgpp/math.h"
5630         add_compat djgpp/math.o
5631     fi
5632     test_${pfx}cc <<EOF
5633 #include <time.h>
5634 void *v = localtime_r;
5635 EOF
5636 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5637 #include <time.h>
5638 void *v = localtime_r;
5639 EOF
5640
5641     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5642 }
5643
5644 probe_libc
5645 probe_libc host_
5646
5647 # hacks for compiler/libc/os combinations
5648
5649 case $libc_type in
5650     bionic)
5651         add_compat strtod.o strtod=avpriv_strtod
5652         ;;
5653 esac
5654
5655 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5656     add_cppflags '-I\$(SRC_PATH)/compat/float'
5657
5658 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5659
5660 set_default libdir
5661 : ${shlibdir_default:="$libdir"}
5662 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5663
5664 set_default $PATHS_LIST
5665 set_default nm
5666
5667 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5668
5669 enable_weak_pic() {
5670     disabled pic && return
5671     enable pic
5672     add_cppflags -DPIC
5673     case "$target_os" in
5674     mingw*|cygwin*|win*)
5675         ;;
5676     *)
5677         add_cflags -fPIC
5678         add_asflags -fPIC
5679         ;;
5680     esac
5681 }
5682
5683 enabled pic && enable_weak_pic
5684
5685 test_cc <<EOF || die "Symbol mangling check failed."
5686 int ff_extern;
5687 EOF
5688 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5689 extern_prefix=${sym%%ff_extern*}
5690
5691 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5692
5693 for restrict_keyword in restrict __restrict__ __restrict ""; do
5694     test_code cc "" "char * $restrict_keyword p" && break
5695 done
5696
5697 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5698
5699 # The global variable ensures the bits appear unchanged in the object file.
5700 test_cc <<EOF || die "endian test failed"
5701 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5702 EOF
5703 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5704
5705 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5706
5707 if ! enabled ppc64 || enabled bigendian; then
5708     disable vsx
5709 fi
5710
5711 check_gas() {
5712     log "check_gas using '$as' as AS"
5713     # :vararg is used on aarch64, arm and ppc altivec
5714     check_as vararg "
5715 .macro m n, y:vararg=0
5716 \n: .int \y
5717 .endm
5718 m x" || return 1
5719     # .altmacro is only used in arm asm
5720     ! enabled arm || check_as gnu_as ".altmacro"
5721 }
5722
5723 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5724     nogas=:
5725     enabled_any arm aarch64 && nogas=die
5726     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5727     as_noop=-v
5728
5729     case $as_type in
5730         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5731         gcc)  gaspp_as_type=gas ;;
5732         *)    gaspp_as_type=$as_type ;;
5733     esac
5734
5735     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5736
5737     test "${as#*gas-preprocessor.pl}" != "$as" ||
5738     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5739         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5740
5741     if ! check_gas ; then
5742         as=${gas:=$as}
5743         check_gas || \
5744             $nogas "GNU assembler not found, install/update gas-preprocessor"
5745     fi
5746
5747     check_as as_func ".func test
5748                       .endfunc"
5749 fi
5750
5751 check_inline_asm inline_asm_labels '"1:\n"'
5752
5753 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5754
5755 if enabled aarch64; then
5756     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5757     # internal assembler in clang 3.3 does not support this instruction
5758     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5759     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5760
5761     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5762
5763 elif enabled alpha; then
5764
5765     check_cflags -mieee
5766
5767 elif enabled arm; then
5768
5769     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5770     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5771 float func(float a, float b){ return a+b; }
5772 EOF
5773     enabled thumb && check_cflags -mthumb || check_cflags -marm
5774
5775     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5776         :
5777     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5778         :
5779     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5780         case "${cross_prefix:-$cc}" in
5781             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5782             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5783 __asm__ (".eabi_attribute 28, 1");
5784 int main(void) { return 0; }
5785 EOF
5786         esac
5787         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5788     fi
5789
5790     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5791     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5792     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5793     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5794     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5795     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5796     enabled setend  && check_insn setend  'setend be'
5797
5798     [ $target_os = linux ] || [ $target_os = android ] ||
5799         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5800             $ARCH_EXT_LIST_ARM
5801
5802     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5803
5804     check_as as_arch_directive ".arch armv7-a"
5805     check_as as_dn_directive   "ra .dn d0.i16"
5806     check_as as_fpu_directive  ".fpu neon"
5807
5808     # llvm's integrated assembler supports .object_arch from llvm 3.5
5809     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5810         check_as as_object_arch ".object_arch armv4"
5811
5812     # MS armasm fails to assemble our PIC constructs
5813     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5814
5815 elif enabled mips; then
5816
5817     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5818     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5819     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5820
5821     # Enable minimum ISA based on selected options
5822     if enabled mips64; then
5823         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5824         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5825         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5826     else
5827         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5828         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5829         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5830         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5831     fi
5832
5833     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5834     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5835     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5836     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5837     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5838     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5839
5840     if enabled bigendian && enabled msa; then
5841         disable msa
5842     fi
5843
5844 elif enabled parisc; then
5845
5846     if enabled gcc; then
5847         case $($cc -dumpversion) in
5848             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5849         esac
5850     fi
5851
5852 elif enabled ppc; then
5853
5854     enable local_aligned
5855
5856     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5857     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5858     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5859     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5860
5861     if enabled altivec; then
5862         check_cflags -maltivec -mabi=altivec
5863
5864         # check if our compiler supports Motorola AltiVec C API
5865         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5866                                     vector signed int v2 = (vector signed int) { 1 };
5867                                     v1 = vec_add(v1, v2);"
5868
5869         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5870     fi
5871
5872     if enabled vsx; then
5873         check_cflags -mvsx &&
5874         check_cc vsx altivec.h "int v[4] = { 0 };
5875                                 vector signed int v1 = vec_vsx_ld(0, v);"
5876     fi
5877
5878     if enabled power8; then
5879         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5880     fi
5881
5882 elif enabled x86; then
5883
5884     check_builtin rdtsc    intrin.h   "__rdtsc()"
5885     check_builtin mm_empty mmintrin.h "_mm_empty()"
5886
5887     enable local_aligned
5888
5889     # check whether EBP is available on x86
5890     # As 'i' is stored on the stack, this program will crash
5891     # if the base pointer is used to access it because the
5892     # base pointer is cleared in the inline assembly code.
5893     check_exec_crash <<EOF && enable ebp_available
5894 volatile int i=0;
5895 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5896 return i;
5897 EOF
5898
5899     # check whether EBX is available on x86
5900     check_inline_asm ebx_available '""::"b"(0)' &&
5901         check_inline_asm ebx_available '"":::"%ebx"'
5902
5903     # check whether xmm clobbers are supported
5904     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5905
5906     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5907         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5908
5909     # check whether binutils is new enough to compile SSSE3/MMXEXT
5910     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5911     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5912
5913     probe_x86asm(){
5914         x86asmexe_probe=$1
5915         if test_cmd $x86asmexe_probe -v; then
5916             x86asmexe=$x86asmexe_probe
5917             x86asm_type=nasm
5918             x86asm_debug="-g -F dwarf"
5919             X86ASMDEP=
5920             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5921         elif test_cmd $x86asmexe_probe --version; then
5922             x86asmexe=$x86asmexe_probe
5923             x86asm_type=yasm
5924             x86asm_debug="-g dwarf2"
5925             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5926             X86ASM_DEPFLAGS=
5927         fi
5928         check_x86asm x86asm "movbe ecx, [5]"
5929     }
5930
5931     if ! disabled_any asm mmx x86asm; then
5932         disable x86asm
5933         for program in $x86asmexe nasm yasm; do
5934             probe_x86asm $program && break
5935         done
5936         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5937         X86ASMFLAGS="-f $objformat"
5938         enabled pic               && append X86ASMFLAGS "-DPIC"
5939         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5940         case "$objformat" in
5941             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5942         esac
5943
5944         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5945         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5946         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5947         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5948         check_x86asm cpunop          "CPU amdnop"
5949     fi
5950
5951     case "$cpu" in
5952         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5953             disable fast_clz
5954         ;;
5955     esac
5956
5957 fi
5958
5959 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5960
5961 check_ldflags -Wl,--as-needed
5962 check_ldflags -Wl,-z,noexecstack
5963
5964 if ! disabled network; then
5965     check_func getaddrinfo $network_extralibs
5966     check_func inet_aton $network_extralibs
5967
5968     check_type netdb.h "struct addrinfo"
5969     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5970     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5971     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5972     check_type poll.h "struct pollfd"
5973     check_type netinet/sctp.h "struct sctp_event_subscribe"
5974     check_struct "sys/socket.h" "struct msghdr" msg_flags
5975     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5976     check_type netinet/in.h "struct sockaddr_in6"
5977     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5978     check_type "sys/types.h sys/socket.h" socklen_t
5979
5980     # Prefer arpa/inet.h over winsock2
5981     if check_headers arpa/inet.h ; then
5982         check_func closesocket
5983     elif check_headers winsock2.h ; then
5984         check_func_headers winsock2.h closesocket -lws2 &&
5985             network_extralibs="-lws2" ||
5986         { check_func_headers winsock2.h closesocket -lws2_32 &&
5987             network_extralibs="-lws2_32"; } || disable winsock2_h network
5988         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5989
5990         check_type ws2tcpip.h socklen_t
5991         check_type ws2tcpip.h "struct addrinfo"
5992         check_type ws2tcpip.h "struct group_source_req"
5993         check_type ws2tcpip.h "struct ip_mreq_source"
5994         check_type ws2tcpip.h "struct ipv6_mreq"
5995         check_type winsock2.h "struct pollfd"
5996         check_struct winsock2.h "struct sockaddr" sa_len
5997         check_type ws2tcpip.h "struct sockaddr_in6"
5998         check_type ws2tcpip.h "struct sockaddr_storage"
5999     else
6000         disable network
6001     fi
6002 fi
6003
6004 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6005 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6006 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6007 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6008 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6009 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6010 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6011
6012 case "$custom_allocator" in
6013     jemalloc)
6014         # jemalloc by default does not use a prefix
6015         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6016     ;;
6017     tcmalloc)
6018         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6019         malloc_prefix=tc_
6020     ;;
6021 esac
6022
6023 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6024 check_func  ${malloc_prefix}memalign            && enable memalign
6025 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6026
6027 check_func  access
6028 check_func_headers stdlib.h arc4random
6029 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6030 check_func  fcntl
6031 check_func  fork
6032 check_func  gethrtime
6033 check_func  getopt
6034 check_func  getrusage
6035 check_func  gettimeofday
6036 check_func  isatty
6037 check_func  mkstemp
6038 check_func  mmap
6039 check_func  mprotect
6040 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6041 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6042 check_func  sched_getaffinity
6043 check_func  setrlimit
6044 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6045 check_func  strerror_r
6046 check_func  sysconf
6047 check_func  sysctl
6048 check_func  usleep
6049
6050 check_func_headers conio.h kbhit
6051 check_func_headers io.h setmode
6052 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6053 check_func_headers mach/mach_time.h mach_absolute_time
6054 check_func_headers stdlib.h getenv
6055 check_func_headers sys/stat.h lstat
6056
6057 check_func_headers windows.h GetModuleHandle
6058 check_func_headers windows.h GetProcessAffinityMask
6059 check_func_headers windows.h GetProcessTimes
6060 check_func_headers windows.h GetStdHandle
6061 check_func_headers windows.h GetSystemTimeAsFileTime
6062 check_func_headers windows.h LoadLibrary
6063 check_func_headers windows.h MapViewOfFile
6064 check_func_headers windows.h PeekNamedPipe
6065 check_func_headers windows.h SetConsoleTextAttribute
6066 check_func_headers windows.h SetConsoleCtrlHandler
6067 check_func_headers windows.h SetDllDirectory
6068 check_func_headers windows.h Sleep
6069 check_func_headers windows.h VirtualAlloc
6070 check_func_headers glob.h glob
6071 enabled xlib &&
6072     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6073
6074 check_headers direct.h
6075 check_headers dirent.h
6076 check_headers dxgidebug.h
6077 check_headers dxva.h
6078 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6079 check_headers io.h
6080 check_headers linux/perf_event.h
6081 check_headers libcrystalhd/libcrystalhd_if.h
6082 check_headers malloc.h
6083 check_headers net/udplite.h
6084 check_headers poll.h
6085 check_headers sys/param.h
6086 check_headers sys/resource.h
6087 check_headers sys/select.h
6088 check_headers sys/time.h
6089 check_headers sys/un.h
6090 check_headers termios.h
6091 check_headers unistd.h
6092 check_headers valgrind/valgrind.h
6093 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6094 check_headers windows.h
6095 check_headers X11/extensions/XvMClib.h
6096 check_headers asm/types.h
6097
6098 # it seems there are versions of clang in some distros that try to use the
6099 # gcc headers, which explodes for stdatomic
6100 # so we also check that atomics actually work here
6101 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6102
6103 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6104 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6105     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6106 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6107 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6108 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6109
6110 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6111 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6112 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6113
6114 enabled appkit       && check_apple_framework AppKit
6115 enabled audiotoolbox && check_apple_framework AudioToolbox
6116 enabled avfoundation && check_apple_framework AVFoundation
6117 enabled coreimage    && check_apple_framework CoreImage
6118 enabled videotoolbox && check_apple_framework VideoToolbox
6119
6120 check_apple_framework CoreFoundation
6121 check_apple_framework CoreMedia
6122 check_apple_framework CoreVideo
6123
6124 enabled avfoundation && {
6125     disable coregraphics applicationservices
6126     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6127     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6128
6129 enabled videotoolbox && {
6130     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6131     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6132     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6133     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6134     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6135     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6136 }
6137
6138 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6139
6140 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6141 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6142 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6143 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6144 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6145
6146 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6147 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6148
6149 if [ -z "$nvccflags" ]; then
6150     nvccflags=$nvccflags_default
6151 fi
6152
6153 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6154     nvccflags="$nvccflags -m64"
6155 else
6156     nvccflags="$nvccflags -m32"
6157 fi
6158
6159 if enabled cuda_nvcc; then
6160     nvccflags="$nvccflags -ptx"
6161 else
6162     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6163     check_nvcc cuda_llvm
6164 fi
6165
6166 if ! disabled ffnvcodec; then
6167     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6168     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6169       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6170       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6171       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6172 fi
6173
6174 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6175
6176 if ! disabled w32threads && ! enabled pthreads; then
6177     check_func_headers "windows.h process.h" _beginthreadex &&
6178         check_type "windows.h" CONDITION_VARIABLE &&
6179         check_type "windows.h" INIT_ONCE &&
6180         enable w32threads || disable w32threads
6181     if ! enabled w32threads && enabled winrt; then
6182         check_func_headers "windows.h" CreateThread &&
6183             enable w32threads || disable w32threads
6184     fi
6185 fi
6186
6187 # check for some common methods of building with pthread support
6188 # do this before the optional library checks as some of them require pthreads
6189 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6190     if check_lib pthreads pthread.h pthread_join   -pthread &&
6191        check_lib pthreads pthread.h pthread_create -pthread; then
6192         add_cflags -pthread
6193     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6194          check_lib pthreads pthread.h pthread_create -pthreads; then
6195         add_cflags -pthreads
6196     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6197          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6198         add_cflags -ldl -pthread
6199     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6200          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6201         :
6202     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6203          check_lib pthreads pthread.h pthread_create -lpthread; then
6204         :
6205     elif check_func pthread_join && check_func pthread_create; then
6206         enable pthreads
6207     fi
6208     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6209
6210     if enabled pthreads; then
6211         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6212         check_func pthread_cancel $pthreads_extralibs
6213     fi
6214 fi
6215
6216 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6217                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6218 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6219 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6220
6221 # On some systems dynamic loading requires no extra linker flags
6222 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6223
6224 check_lib libm math.h sin -lm
6225
6226 atan2f_args=2
6227 copysign_args=2
6228 hypot_args=2
6229 ldexpf_args=2
6230 powf_args=2
6231
6232 for func in $MATH_FUNCS; do
6233     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6234 done
6235
6236 for func in $COMPLEX_FUNCS; do
6237     eval check_complexfunc $func \${${func}_args:-1}
6238 done
6239
6240 # these are off by default, so fail if requested and not available
6241 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6242 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6243 enabled decklink          && { require_headers DeckLinkAPI.h &&
6244                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6245 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6246 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6247 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6248 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6249 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6250 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6251 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6252                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6253                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6254 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6255 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6256 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6257 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6258 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6259 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6260                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6261                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6262 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6263 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6264 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6265 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6266 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6267 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6268 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6269                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6270                                  warn "using libfdk without pkg-config"; } }
6271 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"
6272 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6273 enabled fontconfig        && enable libfontconfig
6274 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6275 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6276 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6277 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6278 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6279                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6280 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6281                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6282                                done || die "ERROR: libgsm not found"; }
6283 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6284 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6285 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6286 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6287 # While it may appear that require is being used as a pkg-config
6288 # fallback for libmfx, it is actually being used to detect a different
6289 # installation route altogether.  If libmfx is installed via the Intel
6290 # Media SDK or Intel Media Server Studio, these don't come with
6291 # pkg-config support.  Instead, users should make sure that the build
6292 # can find the libraries and headers through other means.
6293 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6294                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6295 if enabled libmfx; then
6296    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6297 fi
6298
6299 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6300 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6301 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6302                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6303 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6304                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6305                                die "ERROR: libnpp not found"; }
6306 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6307 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6308 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6309                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6310                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6311                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6312 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6313 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6314                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6315 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6316 enabled libopus           && {
6317     enabled libopus_decoder && {
6318         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6319     }
6320     enabled libopus_encoder && {
6321         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6322     }
6323 }
6324 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6325 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6326 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6327 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6328 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6329 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6330 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6331 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6332                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6333 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6334 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6335 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6336 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6337 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6338 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6339 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6340 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6341 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6342 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6343                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6344                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6345 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6346 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6347 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6348 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6349 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6350                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6351
6352 enabled libvpx            && {
6353     enabled libvpx_vp8_decoder && {
6354         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6355             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"
6356     }
6357     enabled libvpx_vp8_encoder && {
6358         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6359             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"
6360     }
6361     enabled libvpx_vp9_decoder && {
6362         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6363             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"
6364     }
6365     enabled libvpx_vp9_encoder && {
6366         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6367             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"
6368     }
6369     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6370         die "libvpx enabled but no supported decoders found"
6371     fi
6372 }
6373
6374 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6375 enabled libwebp           && {
6376     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6377     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6378 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6379                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6380                                  warn "using libx264 without pkg-config"; } } &&
6381                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6382                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6383 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6384                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6385 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6386 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6387 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6388 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6389 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6390 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6391                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6392                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6393 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6394 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6395                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6396                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6397                                die "ERROR: mbedTLS not found"; }
6398 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6399 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6400                                { ! enabled cross_compile &&
6401                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6402                                  add_ldflags -L/opt/vc/lib/ &&
6403                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6404                                die "ERROR: mmal not found" &&
6405                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6406 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6407                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6408                                die "ERROR: openal not found"; } &&
6409                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6410                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6411 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6412                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6413                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6414                                die "ERROR: opencl not found"; } &&
6415                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6416                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6417                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6418 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6419                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6420                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6421                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6422                                die "ERROR: opengl not found."
6423                              }
6424 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6425                                { ! enabled cross_compile &&
6426                                  add_cflags -isystem/opt/vc/include/IL &&
6427                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6428                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6429                              enable omx
6430 enabled omx               && require_headers OMX_Core.h
6431 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6432                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6433                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6434                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6435                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6436                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6437                                die "ERROR: openssl not found"; }
6438 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6439 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6440                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6441                                { enabled libdrm ||
6442                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6443                              }
6444 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6445
6446
6447 if enabled gcrypt; then
6448     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6449     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6450         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6451         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6452         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6453             die "ERROR: gcrypt not found"
6454         add_cflags $gcrypt_cflags
6455     else
6456         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6457     fi
6458 fi
6459
6460 if enabled sdl2; then
6461     SDL2_CONFIG="${cross_prefix}sdl2-config"
6462     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6463     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6464         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6465         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6466         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6467         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6468         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6469             enable sdl2
6470     fi
6471     if test $target_os = "mingw32"; then
6472         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6473     fi
6474 fi
6475
6476 if enabled decklink; then
6477     case $target_os in
6478         mingw32*|mingw64*|win32|win64)
6479             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6480             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6481             ;;
6482     esac
6483 fi
6484
6485 enabled securetransport &&
6486     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6487     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6488         disable securetransport
6489
6490 enabled securetransport &&
6491     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6492
6493 enabled schannel &&
6494     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6495     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6496     schannel_extralibs="-lsecur32" ||
6497         disable schannel
6498
6499 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6500 enabled makeinfo \
6501     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6502     && enable makeinfo_html || disable makeinfo_html
6503 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6504 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6505 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6506 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6507
6508 # check V4L2 codecs available in the API
6509 if enabled v4l2_m2m; then
6510     check_headers linux/fb.h
6511     check_headers linux/videodev2.h
6512     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6513     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6514     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6515     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6516     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6517     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6518     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6519     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6520     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6521     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6522     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6523 fi
6524
6525 check_headers sys/videoio.h
6526 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6527
6528 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6529 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6530 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6531 # w32api 3.12 had it defined wrong
6532 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6533
6534 check_type "dshow.h" IBaseFilter
6535
6536 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6537 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6538     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6539     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6540     check_headers "dev/ic/bt8xx.h"
6541
6542 if check_struct sys/soundcard.h audio_buf_info bytes; then
6543     enable_sanitized sys/soundcard.h
6544 else
6545     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6546     #include <sys/soundcard.h>
6547     audio_buf_info abc;
6548 EOF
6549 fi
6550
6551 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6552                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6553
6554 enabled libjack &&
6555     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6556
6557 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6558
6559 if enabled libcdio; then
6560     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6561     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6562     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6563     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6564     die "ERROR: No usable libcdio/cdparanoia found"
6565 fi
6566
6567 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6568     disable libxcb_shm libxcb_shape libxcb_xfixes
6569
6570 if enabled libxcb; then
6571     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6572     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6573     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6574 fi
6575
6576 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6577
6578 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6579 # the desktop api partition
6580 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6581 #ifdef WINAPI_FAMILY
6582 #include <winapifamily.h>
6583 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6584 #error desktop, not uwp
6585 #else
6586 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6587 #endif
6588 #else
6589 #error no family set
6590 #endif
6591 EOF
6592
6593 enabled vaapi &&
6594     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6595
6596 if enabled vaapi; then
6597     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6598
6599     if enabled xlib; then
6600         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6601     fi
6602
6603     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6604
6605     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6606     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6607     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6608     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6609     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6610     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6611     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6612     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6613 fi
6614
6615 if enabled_all opencl libdrm ; then
6616     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6617         enable opencl_drm_beignet
6618     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6619         enable opencl_drm_arm
6620 fi
6621
6622 if enabled_all opencl vaapi ; then
6623     if enabled opencl_drm_beignet ; then
6624         enable opencl_vaapi_beignet
6625     else
6626         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6627             enable opencl_vaapi_intel_media
6628     fi
6629 fi
6630
6631 if enabled_all opencl dxva2 ; then
6632     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6633         enable opencl_dxva2
6634 fi
6635
6636 if enabled_all opencl d3d11va ; then
6637     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6638         enable opencl_d3d11
6639 fi
6640
6641 enabled vdpau &&
6642     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6643
6644 enabled vdpau &&
6645     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6646
6647 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6648
6649 enabled vulkan &&
6650     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6651
6652 if enabled x86; then
6653     case $target_os in
6654         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6655             ;;
6656         *)
6657             disable ffnvcodec cuvid nvdec nvenc
6658             ;;
6659     esac
6660 elif enabled ppc64 && ! enabled bigendian; then
6661     case $target_os in
6662         linux)
6663             ;;
6664         *)
6665             disable ffnvcodec cuvid nvdec nvenc
6666             ;;
6667     esac
6668 else
6669     disable ffnvcodec cuvid nvdec nvenc
6670 fi
6671
6672 enabled ffnvcodec && enable cuda
6673
6674 enabled nvenc &&
6675     test_cc -I$source_path <<EOF || disable nvenc
6676 #include <ffnvcodec/nvEncodeAPI.h>
6677 NV_ENCODE_API_FUNCTION_LIST flist;
6678 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6679 int main(void) { return 0; }
6680 EOF
6681
6682 enabled amf &&
6683     check_cpp_condition amf "AMF/core/Version.h" \
6684         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6685
6686 # Funny iconv installations are not unusual, so check it after all flags have been set
6687 if enabled libc_iconv; then
6688     check_func_headers iconv.h iconv
6689 elif enabled iconv; then
6690     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6691 fi
6692
6693 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6694
6695 # add some useful compiler flags if supported
6696 check_cflags -Wdeclaration-after-statement
6697 check_cflags -Wall
6698 check_cflags -Wdisabled-optimization
6699 check_cflags -Wpointer-arith
6700 check_cflags -Wredundant-decls
6701 check_cflags -Wwrite-strings
6702 check_cflags -Wtype-limits
6703 check_cflags -Wundef
6704 check_cflags -Wmissing-prototypes
6705 check_cflags -Wno-pointer-to-int-cast
6706 check_cflags -Wstrict-prototypes
6707 check_cflags -Wempty-body
6708
6709 if enabled extra_warnings; then
6710     check_cflags -Wcast-qual
6711     check_cflags -Wextra
6712     check_cflags -Wpedantic
6713 fi
6714
6715 check_disable_warning(){
6716     warning_flag=-W${1#-Wno-}
6717     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6718 }
6719
6720 test_cflags -Werror=unused-command-line-argument &&
6721     append unknown_warning_flags "-Werror=unused-command-line-argument"
6722 test_cflags -Werror=unknown-warning-option &&
6723     append unknown_warning_flags "-Werror=unknown-warning-option"
6724
6725 check_disable_warning -Wno-parentheses
6726 check_disable_warning -Wno-switch
6727 check_disable_warning -Wno-format-zero-length
6728 check_disable_warning -Wno-pointer-sign
6729 check_disable_warning -Wno-unused-const-variable
6730 check_disable_warning -Wno-bool-operation
6731 check_disable_warning -Wno-char-subscripts
6732
6733 check_disable_warning_headers(){
6734     warning_flag=-W${1#-Wno-}
6735     test_cflags $warning_flag && add_cflags_headers $1
6736 }
6737
6738 check_disable_warning_headers -Wno-deprecated-declarations
6739 check_disable_warning_headers -Wno-unused-variable
6740
6741 test_cc <<EOF && enable blocks_extension
6742 void (^block)(void);
6743 EOF
6744
6745 # add some linker flags
6746 check_ldflags -Wl,--warn-common
6747 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6748 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6749 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6750
6751 # add some strip flags
6752 check_stripflags -x
6753
6754 enabled neon_clobber_test &&
6755     check_ldflags -Wl,--wrap,avcodec_open2              \
6756                   -Wl,--wrap,avcodec_decode_audio4      \
6757                   -Wl,--wrap,avcodec_decode_video2      \
6758                   -Wl,--wrap,avcodec_decode_subtitle2   \
6759                   -Wl,--wrap,avcodec_encode_audio2      \
6760                   -Wl,--wrap,avcodec_encode_video2      \
6761                   -Wl,--wrap,avcodec_encode_subtitle    \
6762                   -Wl,--wrap,avcodec_send_packet        \
6763                   -Wl,--wrap,avcodec_receive_packet     \
6764                   -Wl,--wrap,avcodec_send_frame         \
6765                   -Wl,--wrap,avcodec_receive_frame      \
6766                   -Wl,--wrap,swr_convert                \
6767                   -Wl,--wrap,avresample_convert ||
6768     disable neon_clobber_test
6769
6770 enabled xmm_clobber_test &&
6771     check_ldflags -Wl,--wrap,avcodec_open2              \
6772                   -Wl,--wrap,avcodec_decode_audio4      \
6773                   -Wl,--wrap,avcodec_decode_video2      \
6774                   -Wl,--wrap,avcodec_decode_subtitle2   \
6775                   -Wl,--wrap,avcodec_encode_audio2      \
6776                   -Wl,--wrap,avcodec_encode_video2      \
6777                   -Wl,--wrap,avcodec_encode_subtitle    \
6778                   -Wl,--wrap,avcodec_send_packet        \
6779                   -Wl,--wrap,avcodec_receive_packet     \
6780                   -Wl,--wrap,avcodec_send_frame         \
6781                   -Wl,--wrap,avcodec_receive_frame      \
6782                   -Wl,--wrap,swr_convert                \
6783                   -Wl,--wrap,avresample_convert         \
6784                   -Wl,--wrap,sws_scale ||
6785     disable xmm_clobber_test
6786
6787 check_ld "cc" proper_dce <<EOF
6788 extern const int array[512];
6789 static inline int func(void) { return array[0]; }
6790 int main(void) { return 0; }
6791 EOF
6792
6793 if enabled proper_dce; then
6794     echo "X { local: *; };" > $TMPV
6795     if test_ldflags -Wl,${version_script},$TMPV; then
6796         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6797         quotes='""'
6798         test_cc <<EOF && enable symver_asm_label
6799 void ff_foo(void) __asm__ ("av_foo@VERSION");
6800 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6801 EOF
6802         test_cc <<EOF && enable symver_gnu_asm
6803 __asm__(".symver ff_foo,av_foo@VERSION");
6804 void ff_foo(void) {}
6805 EOF
6806     fi
6807 fi
6808
6809 if [ -z "$optflags" ]; then
6810     if enabled small; then
6811         optflags=$cflags_size
6812     elif enabled optimizations; then
6813         optflags=$cflags_speed
6814     else
6815         optflags=$cflags_noopt
6816     fi
6817 fi
6818
6819 check_optflags(){
6820     check_cflags "$@"
6821     enabled lto && check_ldflags "$@"
6822 }
6823
6824 check_optflags $optflags
6825 check_optflags -fno-math-errno
6826 check_optflags -fno-signed-zeros
6827
6828 if enabled lto; then
6829     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6830     check_cflags  -flto
6831     check_ldflags -flto $cpuflags
6832     disable inline_asm_direct_symbol_refs
6833 fi
6834
6835 enabled ftrapv && check_cflags -ftrapv
6836
6837 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6838 int x;
6839 EOF
6840
6841
6842 if enabled icc; then
6843     # Just warnings, no remarks
6844     check_cflags -w1
6845     # -wd: Disable following warnings
6846     # 144, 167, 556: -Wno-pointer-sign
6847     # 188: enumerated type mixed with another type
6848     # 1292: attribute "foo" ignored
6849     # 1419: external declaration in primary source file
6850     # 10006: ignoring unknown option -fno-signed-zeros
6851     # 10148: ignoring unknown option -Wno-parentheses
6852     # 10156: ignoring option '-W'; no argument required
6853     # 13200: No EMMS instruction before call to function
6854     # 13203: No EMMS instruction before return from function
6855     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6856     # 11030: Warning unknown option --as-needed
6857     # 10156: ignoring option '-export'; no argument required
6858     check_ldflags -wd10156,11030
6859     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6860     enable ebp_available
6861     # The test above does not test linking
6862     enabled lto && disable symver_asm_label
6863     if enabled x86_32; then
6864         icc_version=$($cc -dumpversion)
6865         test ${icc_version%%.*} -ge 11 &&
6866             check_cflags -falign-stack=maintain-16-byte ||
6867             disable aligned_stack
6868     fi
6869 elif enabled gcc; then
6870     check_optflags -fno-tree-vectorize
6871     check_cflags -Werror=format-security
6872     check_cflags -Werror=implicit-function-declaration
6873     check_cflags -Werror=missing-prototypes
6874     check_cflags -Werror=return-type
6875     check_cflags -Werror=vla
6876     check_cflags -Wformat
6877     check_cflags -fdiagnostics-color=auto
6878     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6879     if enabled x86_32; then
6880         case $target_os in
6881         *bsd*)
6882             # BSDs don't guarantee a 16 byte aligned stack, but we can
6883             # request GCC to try to maintain 16 byte alignment throughout
6884             # function calls. Library entry points that might call assembly
6885             # functions align the stack. (The parameter means 2^4 bytes.)
6886             check_cflags -mpreferred-stack-boundary=4
6887             ;;
6888         esac
6889     fi
6890 elif enabled llvm_gcc; then
6891     check_cflags -mllvm -stack-alignment=16
6892 elif enabled clang; then
6893     if enabled x86_32; then
6894         # Clang doesn't support maintaining alignment without assuming the
6895         # same alignment in every function. If 16 byte alignment would be
6896         # enabled, one would also have to either add attribute_align_arg on
6897         # every single entry point into the libraries or enable -mstackrealign
6898         # (doing stack realignment in every single function).
6899         case $target_os in
6900         mingw32|win32|*bsd*)
6901             disable aligned_stack
6902             ;;
6903         *)
6904             check_cflags -mllvm -stack-alignment=16
6905             check_cflags -mstack-alignment=16
6906             ;;
6907         esac
6908     else
6909         check_cflags -mllvm -stack-alignment=16
6910         check_cflags -mstack-alignment=16
6911     fi
6912     check_cflags -Qunused-arguments
6913     check_cflags -Werror=implicit-function-declaration
6914     check_cflags -Werror=missing-prototypes
6915     check_cflags -Werror=return-type
6916 elif enabled cparser; then
6917     add_cflags -Wno-missing-variable-declarations
6918     add_cflags -Wno-empty-statement
6919 elif enabled armcc; then
6920     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6921     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6922     # 2523: use of inline assembly is deprecated
6923     add_cflags -W${armcc_opt},--diag_suppress=2523
6924     add_cflags -W${armcc_opt},--diag_suppress=1207
6925     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6926     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6927     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6928     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6929 elif enabled pathscale; then
6930     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6931     disable inline_asm
6932 elif enabled_any msvc icl; then
6933     enabled x86_32 && disable aligned_stack
6934     enabled_all x86_32 debug && add_cflags -Oy-
6935     enabled debug && add_ldflags -debug
6936     enable pragma_deprecated
6937     if enabled icl; then
6938         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6939         # (correctly) on icl 13.x.
6940         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6941             add_cflags -Qansi-alias
6942         # Some inline asm is not compilable in debug
6943         if enabled debug; then
6944             disable ebp_available
6945             disable ebx_available
6946         fi
6947     fi
6948     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6949     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6950     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6951     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6952     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6953     # MSVC 2013 and newer can handle it fine.
6954     # If this declspec fails, force including stdlib.h before the restrict redefinition
6955     # happens in config.h.
6956     if [ $restrict_keyword != restrict ]; then
6957         test_cc <<EOF || add_cflags -FIstdlib.h
6958 __declspec($restrict_keyword) void *foo(int);
6959 EOF
6960     fi
6961     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6962     # Issue has been fixed in MSVC v19.00.24218.
6963     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6964         check_cflags -d2SSAOptimizer-
6965     # enable utf-8 source processing on VS2015 U2 and newer
6966     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6967         add_cflags -utf-8
6968 fi
6969
6970 for pfx in "" host_; do
6971     varname=${pfx%_}cc_type
6972     eval "type=\$$varname"
6973     if [ "$type" = "msvc" ]; then
6974         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6975 static inline int foo(int a) { return a; }
6976 EOF
6977     fi
6978 done
6979
6980 case $as_type in
6981     clang)
6982         add_asflags -Qunused-arguments
6983     ;;
6984 esac
6985
6986 case $ld_type in
6987     clang)
6988         check_ldflags -Qunused-arguments
6989     ;;
6990 esac
6991
6992 enable frame_thread_encoder
6993
6994 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6995
6996 check_deps $CONFIG_LIST       \
6997            $CONFIG_EXTRA      \
6998            $HAVE_LIST         \
6999            $ALL_COMPONENTS    \
7000
7001 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"
7002 enabled avresample && warn "Building with deprecated library libavresample"
7003
7004 case $target_os in
7005 haiku)
7006     disable memalign
7007     disable posix_memalign
7008     ;;
7009 *-dos|freedos|opendos)
7010     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7011         disable memalign
7012     fi
7013     ;;
7014 esac
7015
7016 flatten_extralibs(){
7017     nested_entries=
7018     list_name=$1
7019     eval list=\$${1}
7020     for entry in $list; do
7021         entry_copy=$entry
7022         resolve entry_copy
7023         flat_entries=
7024         for e in $entry_copy; do
7025             case $e in
7026                 *_extralibs) nested_entries="$nested_entries$e ";;
7027                           *) flat_entries="$flat_entries$e ";;
7028             esac
7029         done
7030         eval $entry="\$flat_entries"
7031     done
7032     append $list_name "$nested_entries"
7033
7034     resolve nested_entries
7035     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7036         flatten_extralibs $list_name
7037     fi
7038 }
7039
7040 flatten_extralibs_wrapper(){
7041     list_name=$1
7042     flatten_extralibs $list_name
7043     unique $list_name
7044     resolve $list_name
7045     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7046     eval printf \''%s'\' \""\$$list_name"\"
7047 }
7048
7049 for linkunit in $LIBRARY_LIST; do
7050     unset current_extralibs
7051     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7052     for comp in ${components}; do
7053         enabled $comp || continue
7054         comp_extralibs="${comp}_extralibs"
7055         append current_extralibs $comp_extralibs
7056     done
7057     eval prepend ${linkunit}_extralibs $current_extralibs
7058 done
7059
7060 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7061     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7062 done
7063
7064 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7065
7066 for thread in $THREADS_LIST; do
7067     if enabled $thread; then
7068         test -n "$thread_type" &&
7069             die "ERROR: Only one thread type must be selected." ||
7070             thread_type="$thread"
7071     fi
7072 done
7073
7074 if disabled stdatomic; then
7075     if enabled atomics_gcc; then
7076         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7077     elif enabled atomics_win32; then
7078         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7079     elif enabled atomics_suncc; then
7080         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7081     elif enabled pthreads; then
7082         add_compat atomics/pthread/stdatomic.o
7083         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7084     else
7085         enabled threads && die "Threading is enabled, but no atomics are available"
7086         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7087     fi
7088 fi
7089
7090 # Check if requested libraries were found.
7091 for lib in $AUTODETECT_LIBS; do
7092     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7093 done
7094
7095 enabled zlib && add_cppflags -DZLIB_CONST
7096
7097 # conditional library dependencies, in any order
7098 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7099 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7100 enabled afir_filter         && prepend avfilter_deps "avcodec"
7101 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7102 enabled aresample_filter    && prepend avfilter_deps "swresample"
7103 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7104 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7105 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7106 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7107 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7108 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7109 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7110 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7111 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7112 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7113 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7114 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7115 enabled pan_filter          && prepend avfilter_deps "swresample"
7116 enabled pp_filter           && prepend avfilter_deps "postproc"
7117 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7118 enabled resample_filter && prepend avfilter_deps "avresample"
7119 enabled sab_filter          && prepend avfilter_deps "swscale"
7120 enabled scale_filter    && prepend avfilter_deps "swscale"
7121 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7122 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7123 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7124 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7125 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7126 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7127 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7128 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7129 enabled spp_filter          && prepend avfilter_deps "avcodec"
7130 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7131 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7132 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7133 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7134
7135 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7136
7137 #FIXME
7138 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7139     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7140
7141 enabled opus_decoder    && prepend avcodec_deps "swresample"
7142
7143 # reorder the items at var $1 to align with the items order at var $2 .
7144 # die if an item at $1 is not at $2 .
7145 reorder_by(){
7146     eval rb_in=\$$1
7147     eval rb_ordered=\$$2
7148
7149     for rb in $rb_in; do
7150         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7151     done
7152
7153     rb_out=
7154     for rb in $rb_ordered; do
7155         is_in $rb $rb_in && rb_out="$rb_out$rb "
7156     done
7157     eval $1=\$rb_out
7158 }
7159
7160 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7161 # within a set of N items, N expansions are enough to expose a cycle.
7162 expand_deps(){
7163     unique ${1}_deps  # required for the early break test.
7164     for dummy in $LIBRARY_LIST; do  # N iteratios
7165         eval deps=\$${1}_deps
7166         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7167         unique ${1}_deps
7168         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7169     done
7170
7171     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7172     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7173 }
7174
7175 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7176 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7177
7178 map 'expand_deps $v' $LIBRARY_LIST
7179
7180 if test "$quiet" != "yes"; then
7181
7182 echo "install prefix            $prefix"
7183 echo "source path               $source_path"
7184 echo "C compiler                $cc"
7185 echo "C library                 $libc_type"
7186 if test "$host_cc" != "$cc"; then
7187     echo "host C compiler           $host_cc"
7188     echo "host C library            $host_libc_type"
7189 fi
7190 echo "ARCH                      $arch ($cpu)"
7191 if test "$build_suffix" != ""; then
7192     echo "build suffix              $build_suffix"
7193 fi
7194 if test "$progs_suffix" != ""; then
7195     echo "progs suffix              $progs_suffix"
7196 fi
7197 if test "$extra_version" != ""; then
7198     echo "version string suffix     $extra_version"
7199 fi
7200 echo "big-endian                ${bigendian-no}"
7201 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7202 if enabled x86; then
7203     echo "standalone assembly       ${x86asm-no}"
7204     echo "x86 assembler             ${x86asmexe}"
7205     echo "MMX enabled               ${mmx-no}"
7206     echo "MMXEXT enabled            ${mmxext-no}"
7207     echo "3DNow! enabled            ${amd3dnow-no}"
7208     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7209     echo "SSE enabled               ${sse-no}"
7210     echo "SSSE3 enabled             ${ssse3-no}"
7211     echo "AESNI enabled             ${aesni-no}"
7212     echo "AVX enabled               ${avx-no}"
7213     echo "AVX2 enabled              ${avx2-no}"
7214     echo "AVX-512 enabled           ${avx512-no}"
7215     echo "XOP enabled               ${xop-no}"
7216     echo "FMA3 enabled              ${fma3-no}"
7217     echo "FMA4 enabled              ${fma4-no}"
7218     echo "i686 features enabled     ${i686-no}"
7219     echo "CMOV is fast              ${fast_cmov-no}"
7220     echo "EBX available             ${ebx_available-no}"
7221     echo "EBP available             ${ebp_available-no}"
7222 fi
7223 if enabled aarch64; then
7224     echo "NEON enabled              ${neon-no}"
7225     echo "VFP enabled               ${vfp-no}"
7226 fi
7227 if enabled arm; then
7228     echo "ARMv5TE enabled           ${armv5te-no}"
7229     echo "ARMv6 enabled             ${armv6-no}"
7230     echo "ARMv6T2 enabled           ${armv6t2-no}"
7231     echo "VFP enabled               ${vfp-no}"
7232     echo "NEON enabled              ${neon-no}"
7233     echo "THUMB enabled             ${thumb-no}"
7234 fi
7235 if enabled mips; then
7236     echo "MIPS FPU enabled          ${mipsfpu-no}"
7237     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7238     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7239     echo "MIPS MSA enabled          ${msa-no}"
7240     echo "MIPS MSA2 enabled         ${msa2-no}"
7241     echo "LOONGSON MMI enabled      ${mmi-no}"
7242 fi
7243 if enabled ppc; then
7244     echo "AltiVec enabled           ${altivec-no}"
7245     echo "VSX enabled               ${vsx-no}"
7246     echo "POWER8 enabled            ${power8-no}"
7247     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7248     echo "dcbzl available           ${dcbzl-no}"
7249 fi
7250 echo "debug symbols             ${debug-no}"
7251 echo "strip symbols             ${stripping-no}"
7252 echo "optimize for size         ${small-no}"
7253 echo "optimizations             ${optimizations-no}"
7254 echo "static                    ${static-no}"
7255 echo "shared                    ${shared-no}"
7256 echo "postprocessing support    ${postproc-no}"
7257 echo "network support           ${network-no}"
7258 echo "threading support         ${thread_type-no}"
7259 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7260 echo "texi2html enabled         ${texi2html-no}"
7261 echo "perl enabled              ${perl-no}"
7262 echo "pod2man enabled           ${pod2man-no}"
7263 echo "makeinfo enabled          ${makeinfo-no}"
7264 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7265 test -n "$random_seed" &&
7266     echo "random seed               ${random_seed}"
7267 echo
7268
7269 echo "External libraries:"
7270 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7271 echo
7272
7273 echo "External libraries providing hardware acceleration:"
7274 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7275 echo
7276
7277 echo "Libraries:"
7278 print_enabled '' $LIBRARY_LIST | print_in_columns
7279 echo
7280
7281 echo "Programs:"
7282 print_enabled '' $PROGRAM_LIST | print_in_columns
7283 echo
7284
7285 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7286     echo "Enabled ${type}s:"
7287     eval list=\$$(toupper $type)_LIST
7288     print_enabled '_*' $list | print_in_columns
7289     echo
7290 done
7291
7292 if test -n "$ignore_tests"; then
7293     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7294     echo "Ignored FATE tests:"
7295     echo $ignore_tests | print_in_columns
7296     echo
7297 fi
7298
7299 echo "License: $license"
7300
7301 fi # test "$quiet" != "yes"
7302
7303 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7304     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7305         if disabled $cfg; then
7306             varname=${cfg}_disable_reason
7307             eval "warn \"Disabled $cfg because \$$varname\""
7308         fi
7309     done
7310 fi
7311
7312 if test -n "$WARNINGS"; then
7313     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7314     enabled fatal_warnings && exit 1
7315 fi
7316
7317 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7318
7319 esc(){
7320     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7321 }
7322
7323 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7324
7325 enabled stripping || strip="echo skipping strip"
7326 enabled stripping || striptype=""
7327
7328 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7329
7330 cat > ffbuild/config.mak <<EOF
7331 # Automatically generated by configure - do not modify!
7332 ifndef FFMPEG_CONFIG_MAK
7333 FFMPEG_CONFIG_MAK=1
7334 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7335 prefix=$prefix
7336 LIBDIR=\$(DESTDIR)$libdir
7337 SHLIBDIR=\$(DESTDIR)$shlibdir
7338 INCDIR=\$(DESTDIR)$incdir
7339 BINDIR=\$(DESTDIR)$bindir
7340 DATADIR=\$(DESTDIR)$datadir
7341 DOCDIR=\$(DESTDIR)$docdir
7342 MANDIR=\$(DESTDIR)$mandir
7343 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7344 INSTALL_NAME_DIR=$install_name_dir
7345 SRC_PATH=$source_path
7346 SRC_LINK=$source_link
7347 ifndef MAIN_MAKEFILE
7348 SRC_PATH:=\$(SRC_PATH:.%=..%)
7349 endif
7350 CC_IDENT=$cc_ident
7351 ARCH=$arch
7352 INTRINSICS=$intrinsics
7353 EXTERN_PREFIX=$extern_prefix
7354 CC=$cc
7355 CXX=$cxx
7356 AS=$as
7357 OBJCC=$objcc
7358 LD=$ld
7359 DEPCC=$dep_cc
7360 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7361 DEPAS=$as
7362 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7363 X86ASM=$x86asmexe
7364 DEPX86ASM=$x86asmexe
7365 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7366 AR=$ar
7367 ARFLAGS=$arflags
7368 AR_O=$ar_o
7369 AR_CMD=$ar
7370 NM_CMD=$nm
7371 RANLIB=$ranlib
7372 STRIP=$strip
7373 STRIPTYPE=$striptype
7374 NVCC=$nvcc
7375 CP=cp -p
7376 LN_S=$ln_s
7377 CPPFLAGS=$CPPFLAGS
7378 CFLAGS=$CFLAGS
7379 CXXFLAGS=$CXXFLAGS
7380 OBJCFLAGS=$OBJCFLAGS
7381 ASFLAGS=$ASFLAGS
7382 NVCCFLAGS=$nvccflags
7383 AS_C=$AS_C
7384 AS_O=$AS_O
7385 OBJCC_C=$OBJCC_C
7386 OBJCC_E=$OBJCC_E
7387 OBJCC_O=$OBJCC_O
7388 CC_C=$CC_C
7389 CC_E=$CC_E
7390 CC_O=$CC_O
7391 CXX_C=$CXX_C
7392 CXX_O=$CXX_O
7393 NVCC_C=$NVCC_C
7394 NVCC_O=$NVCC_O
7395 LD_O=$LD_O
7396 X86ASM_O=$X86ASM_O
7397 LD_LIB=$LD_LIB
7398 LD_PATH=$LD_PATH
7399 DLLTOOL=$dlltool
7400 WINDRES=$windres
7401 DEPWINDRES=$dep_cc
7402 DOXYGEN=$doxygen
7403 LDFLAGS=$LDFLAGS
7404 LDEXEFLAGS=$LDEXEFLAGS
7405 LDSOFLAGS=$LDSOFLAGS
7406 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7407 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7408 X86ASMFLAGS=$X86ASMFLAGS
7409 BUILDSUF=$build_suffix
7410 PROGSSUF=$progs_suffix
7411 FULLNAME=$FULLNAME
7412 LIBPREF=$LIBPREF
7413 LIBSUF=$LIBSUF
7414 LIBNAME=$LIBNAME
7415 SLIBPREF=$SLIBPREF
7416 SLIBSUF=$SLIBSUF
7417 EXESUF=$EXESUF
7418 EXTRA_VERSION=$extra_version
7419 CCDEP=$CCDEP
7420 CXXDEP=$CXXDEP
7421 CCDEP_FLAGS=$CCDEP_FLAGS
7422 ASDEP=$ASDEP
7423 ASDEP_FLAGS=$ASDEP_FLAGS
7424 X86ASMDEP=$X86ASMDEP
7425 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7426 CC_DEPFLAGS=$CC_DEPFLAGS
7427 AS_DEPFLAGS=$AS_DEPFLAGS
7428 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7429 HOSTCC=$host_cc
7430 HOSTLD=$host_ld
7431 HOSTCFLAGS=$host_cflags
7432 HOSTCPPFLAGS=$host_cppflags
7433 HOSTEXESUF=$HOSTEXESUF
7434 HOSTLDFLAGS=$host_ldflags
7435 HOSTEXTRALIBS=$host_extralibs
7436 DEPHOSTCC=$host_cc
7437 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7438 HOSTCCDEP=$HOSTCCDEP
7439 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7440 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7441 HOSTCC_C=$HOSTCC_C
7442 HOSTCC_O=$HOSTCC_O
7443 HOSTLD_O=$HOSTLD_O
7444 TARGET_EXEC=$target_exec $target_exec_args
7445 TARGET_PATH=$target_path
7446 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7447 CFLAGS-ffplay=${sdl2_cflags}
7448 CFLAGS_HEADERS=$CFLAGS_HEADERS
7449 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7450 EXTRALIBS=$extralibs
7451 COMPAT_OBJS=$compat_objs
7452 INSTALL=$install
7453 LIBTARGET=${LIBTARGET}
7454 SLIBNAME=${SLIBNAME}
7455 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7456 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7457 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7458 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7459 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7460 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7461 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7462 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7463 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7464 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7465 NOREDZONE_FLAGS=$noredzone_flags
7466 LIBFUZZER_PATH=$libfuzzer_path
7467 IGNORE_TESTS=$ignore_tests
7468 EOF
7469
7470 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7471
7472 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7473     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7474 done
7475
7476 cat > $TMPH <<EOF
7477 /* Automatically generated by configure - do not modify! */
7478 #ifndef FFMPEG_CONFIG_H
7479 #define FFMPEG_CONFIG_H
7480 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7481 #define FFMPEG_LICENSE "$(c_escape $license)"
7482 #define CONFIG_THIS_YEAR 2020
7483 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7484 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7485 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7486 #define av_restrict $restrict_keyword
7487 #define EXTERN_PREFIX "${extern_prefix}"
7488 #define EXTERN_ASM ${extern_prefix}
7489 #define BUILDSUF "$build_suffix"
7490 #define SLIBSUF "$SLIBSUF"
7491 #define HAVE_MMX2 HAVE_MMXEXT
7492 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7493 EOF
7494
7495 test -n "$assert_level" &&
7496     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7497
7498 test -n "$malloc_prefix" &&
7499     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7500
7501 if enabled x86asm; then
7502     append config_files $TMPASM
7503     cat > $TMPASM <<EOF
7504 ; Automatically generated by configure - do not modify!
7505 EOF
7506 fi
7507
7508 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7509
7510
7511 mkdir -p doc
7512 mkdir -p tests
7513 mkdir -p tests/api
7514 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7515
7516 print_config ARCH_   "$config_files" $ARCH_LIST
7517 print_config HAVE_   "$config_files" $HAVE_LIST
7518 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7519                                      $CONFIG_EXTRA      \
7520                                      $ALL_COMPONENTS    \
7521
7522 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7523 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7524
7525 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7526 cp_if_changed $TMPH config.h
7527 touch ffbuild/.config
7528
7529 enabled x86asm && cp_if_changed $TMPASM config.asm
7530
7531 cat > $TMPH <<EOF
7532 /* Generated by ffmpeg configure */
7533 #ifndef AVUTIL_AVCONFIG_H
7534 #define AVUTIL_AVCONFIG_H
7535 EOF
7536
7537 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7538
7539 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7540
7541 cp_if_changed $TMPH libavutil/avconfig.h
7542
7543 # full_filter_name_foo=vf_foo
7544 # full_filter_name_bar=asrc_bar
7545 # ...
7546 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7547
7548 # generate the lists of enabled components
7549 print_enabled_components(){
7550     file=$1
7551     struct_name=$2
7552     name=$3
7553     shift 3
7554     echo "static const $struct_name * const $name[] = {" > $TMPH
7555     for c in $*; do
7556         if enabled $c; then
7557             case $name in
7558                 filter_list)
7559                     eval c=\$full_filter_name_${c%_filter}
7560                 ;;
7561                 indev_list)
7562                     c=${c%_indev}_demuxer
7563                 ;;
7564                 outdev_list)
7565                     c=${c%_outdev}_muxer
7566                 ;;
7567             esac
7568             printf "    &ff_%s,\n" $c >> $TMPH
7569         fi
7570     done
7571     if [ "$name" = "filter_list" ]; then
7572         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7573             printf "    &ff_%s,\n" $c >> $TMPH
7574         done
7575     fi
7576     echo "    NULL };" >> $TMPH
7577     cp_if_changed $TMPH $file
7578 }
7579
7580 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7581 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7582 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7583 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7584 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7585 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7586 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7587 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7588 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7589
7590 # Settings for pkg-config files
7591
7592 cat > $TMPH <<EOF
7593 # Automatically generated by configure - do not modify!
7594 shared=$shared
7595 build_suffix=$build_suffix
7596 prefix=$prefix
7597 libdir=$libdir
7598 incdir=$incdir
7599 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7600 source_path=${source_path}
7601 LIBPREF=${LIBPREF}
7602 LIBSUF=${LIBSUF}
7603 extralibs_avutil="$avutil_extralibs"
7604 extralibs_avcodec="$avcodec_extralibs"
7605 extralibs_avformat="$avformat_extralibs"
7606 extralibs_avdevice="$avdevice_extralibs"
7607 extralibs_avfilter="$avfilter_extralibs"
7608 extralibs_avresample="$avresample_extralibs"
7609 extralibs_postproc="$postproc_extralibs"
7610 extralibs_swscale="$swscale_extralibs"
7611 extralibs_swresample="$swresample_extralibs"
7612 EOF
7613
7614 for lib in $LIBRARY_LIST; do
7615     lib_deps="$(eval echo \$${lib}_deps)"
7616     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7617 done
7618
7619 cp_if_changed $TMPH ffbuild/config.sh