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 overlay_cuda_filter_deps="ffnvcodec"
3030 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3031
3032 amf_deps_any="libdl LoadLibrary"
3033 nvenc_deps="ffnvcodec"
3034 nvenc_deps_any="libdl LoadLibrary"
3035 nvenc_encoder_deps="nvenc"
3036
3037 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3038 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3039 h264_amf_encoder_deps="amf"
3040 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3041 h264_cuvid_decoder_deps="cuvid"
3042 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3043 h264_mediacodec_decoder_deps="mediacodec"
3044 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3045 h264_mmal_decoder_deps="mmal"
3046 h264_nvenc_encoder_deps="nvenc"
3047 h264_omx_encoder_deps="omx"
3048 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3049 h264_qsv_encoder_select="qsvenc"
3050 h264_rkmpp_decoder_deps="rkmpp"
3051 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3052 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3053 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3054 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3055 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3056 hevc_amf_encoder_deps="amf"
3057 hevc_cuvid_decoder_deps="cuvid"
3058 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3059 hevc_mediacodec_decoder_deps="mediacodec"
3060 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3061 hevc_nvenc_encoder_deps="nvenc"
3062 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3063 hevc_qsv_encoder_select="hevcparse qsvenc"
3064 hevc_rkmpp_decoder_deps="rkmpp"
3065 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3066 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3067 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3068 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3069 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3070 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3071 mjpeg_cuvid_decoder_deps="cuvid"
3072 mjpeg_qsv_decoder_select="qsvdec"
3073 mjpeg_qsv_encoder_deps="libmfx"
3074 mjpeg_qsv_encoder_select="qsvenc"
3075 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3076 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3077 mpeg1_cuvid_decoder_deps="cuvid"
3078 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3079 mpeg2_crystalhd_decoder_select="crystalhd"
3080 mpeg2_cuvid_decoder_deps="cuvid"
3081 mpeg2_mmal_decoder_deps="mmal"
3082 mpeg2_mediacodec_decoder_deps="mediacodec"
3083 mpeg2_qsv_decoder_select="qsvdec"
3084 mpeg2_qsv_encoder_select="qsvenc"
3085 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3086 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3087 mpeg4_crystalhd_decoder_select="crystalhd"
3088 mpeg4_cuvid_decoder_deps="cuvid"
3089 mpeg4_mediacodec_decoder_deps="mediacodec"
3090 mpeg4_mmal_decoder_deps="mmal"
3091 mpeg4_omx_encoder_deps="omx"
3092 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3093 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3094 msmpeg4_crystalhd_decoder_select="crystalhd"
3095 nvenc_h264_encoder_select="h264_nvenc_encoder"
3096 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3097 vc1_crystalhd_decoder_select="crystalhd"
3098 vc1_cuvid_decoder_deps="cuvid"
3099 vc1_mmal_decoder_deps="mmal"
3100 vc1_qsv_decoder_select="qsvdec"
3101 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3102 vp8_cuvid_decoder_deps="cuvid"
3103 vp8_mediacodec_decoder_deps="mediacodec"
3104 vp8_qsv_decoder_select="qsvdec"
3105 vp8_rkmpp_decoder_deps="rkmpp"
3106 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3107 vp8_vaapi_encoder_select="vaapi_encode"
3108 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3109 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3110 vp9_cuvid_decoder_deps="cuvid"
3111 vp9_mediacodec_decoder_deps="mediacodec"
3112 vp9_qsv_decoder_select="qsvdec"
3113 vp9_rkmpp_decoder_deps="rkmpp"
3114 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3115 vp9_vaapi_encoder_select="vaapi_encode"
3116 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3117 vp9_qsv_encoder_select="qsvenc"
3118 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3119 wmv3_crystalhd_decoder_select="crystalhd"
3120
3121 # parsers
3122 aac_parser_select="adts_header"
3123 av1_parser_select="cbs_av1"
3124 h264_parser_select="golomb h264dsp h264parse"
3125 hevc_parser_select="hevcparse"
3126 mpegaudio_parser_select="mpegaudioheader"
3127 mpegvideo_parser_select="mpegvideo"
3128 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3129 vc1_parser_select="vc1dsp"
3130
3131 # bitstream_filters
3132 aac_adtstoasc_bsf_select="adts_header"
3133 av1_frame_merge_bsf_select="cbs_av1"
3134 av1_frame_split_bsf_select="cbs_av1"
3135 av1_metadata_bsf_select="cbs_av1"
3136 eac3_core_bsf_select="ac3_parser"
3137 filter_units_bsf_select="cbs"
3138 h264_metadata_bsf_deps="const_nan"
3139 h264_metadata_bsf_select="cbs_h264"
3140 h264_redundant_pps_bsf_select="cbs_h264"
3141 hevc_metadata_bsf_select="cbs_h265"
3142 mjpeg2jpeg_bsf_select="jpegtables"
3143 mpeg2_metadata_bsf_select="cbs_mpeg2"
3144 trace_headers_bsf_select="cbs"
3145 vp9_metadata_bsf_select="cbs_vp9"
3146
3147 # external libraries
3148 aac_at_decoder_deps="audiotoolbox"
3149 aac_at_decoder_select="aac_adtstoasc_bsf"
3150 ac3_at_decoder_deps="audiotoolbox"
3151 ac3_at_decoder_select="ac3_parser"
3152 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3153 alac_at_decoder_deps="audiotoolbox"
3154 amr_nb_at_decoder_deps="audiotoolbox"
3155 avisynth_deps_any="libdl LoadLibrary"
3156 avisynth_demuxer_deps="avisynth"
3157 avisynth_demuxer_select="riffdec"
3158 eac3_at_decoder_deps="audiotoolbox"
3159 eac3_at_decoder_select="ac3_parser"
3160 gsm_ms_at_decoder_deps="audiotoolbox"
3161 ilbc_at_decoder_deps="audiotoolbox"
3162 mp1_at_decoder_deps="audiotoolbox"
3163 mp2_at_decoder_deps="audiotoolbox"
3164 mp3_at_decoder_deps="audiotoolbox"
3165 mp1_at_decoder_select="mpegaudioheader"
3166 mp2_at_decoder_select="mpegaudioheader"
3167 mp3_at_decoder_select="mpegaudioheader"
3168 pcm_alaw_at_decoder_deps="audiotoolbox"
3169 pcm_mulaw_at_decoder_deps="audiotoolbox"
3170 qdmc_decoder_select="fft"
3171 qdmc_at_decoder_deps="audiotoolbox"
3172 qdm2_at_decoder_deps="audiotoolbox"
3173 aac_at_encoder_deps="audiotoolbox"
3174 aac_at_encoder_select="audio_frame_queue"
3175 alac_at_encoder_deps="audiotoolbox"
3176 alac_at_encoder_select="audio_frame_queue"
3177 ilbc_at_encoder_deps="audiotoolbox"
3178 ilbc_at_encoder_select="audio_frame_queue"
3179 pcm_alaw_at_encoder_deps="audiotoolbox"
3180 pcm_alaw_at_encoder_select="audio_frame_queue"
3181 pcm_mulaw_at_encoder_deps="audiotoolbox"
3182 pcm_mulaw_at_encoder_select="audio_frame_queue"
3183 chromaprint_muxer_deps="chromaprint"
3184 h264_videotoolbox_encoder_deps="pthreads"
3185 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3186 hevc_videotoolbox_encoder_deps="pthreads"
3187 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3188 libaom_av1_decoder_deps="libaom"
3189 libaom_av1_encoder_deps="libaom"
3190 libaom_av1_encoder_select="extract_extradata_bsf"
3191 libaribb24_decoder_deps="libaribb24"
3192 libcelt_decoder_deps="libcelt"
3193 libcodec2_decoder_deps="libcodec2"
3194 libcodec2_encoder_deps="libcodec2"
3195 libdav1d_decoder_deps="libdav1d"
3196 libdavs2_decoder_deps="libdavs2"
3197 libfdk_aac_decoder_deps="libfdk_aac"
3198 libfdk_aac_encoder_deps="libfdk_aac"
3199 libfdk_aac_encoder_select="audio_frame_queue"
3200 libgme_demuxer_deps="libgme"
3201 libgsm_decoder_deps="libgsm"
3202 libgsm_encoder_deps="libgsm"
3203 libgsm_ms_decoder_deps="libgsm"
3204 libgsm_ms_encoder_deps="libgsm"
3205 libilbc_decoder_deps="libilbc"
3206 libilbc_encoder_deps="libilbc"
3207 libkvazaar_encoder_deps="libkvazaar"
3208 libmodplug_demuxer_deps="libmodplug"
3209 libmp3lame_encoder_deps="libmp3lame"
3210 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3211 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3212 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3213 libopencore_amrnb_encoder_select="audio_frame_queue"
3214 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3215 libopenh264_decoder_deps="libopenh264"
3216 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3217 libopenh264_encoder_deps="libopenh264"
3218 libopenjpeg_decoder_deps="libopenjpeg"
3219 libopenjpeg_encoder_deps="libopenjpeg"
3220 libopenmpt_demuxer_deps="libopenmpt"
3221 libopus_decoder_deps="libopus"
3222 libopus_encoder_deps="libopus"
3223 libopus_encoder_select="audio_frame_queue"
3224 librav1e_encoder_deps="librav1e"
3225 librav1e_encoder_select="extract_extradata_bsf"
3226 librsvg_decoder_deps="librsvg"
3227 libshine_encoder_deps="libshine"
3228 libshine_encoder_select="audio_frame_queue"
3229 libspeex_decoder_deps="libspeex"
3230 libspeex_encoder_deps="libspeex"
3231 libspeex_encoder_select="audio_frame_queue"
3232 libtheora_encoder_deps="libtheora"
3233 libtwolame_encoder_deps="libtwolame"
3234 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3235 libvorbis_decoder_deps="libvorbis"
3236 libvorbis_encoder_deps="libvorbis libvorbisenc"
3237 libvorbis_encoder_select="audio_frame_queue"
3238 libvpx_vp8_decoder_deps="libvpx"
3239 libvpx_vp8_encoder_deps="libvpx"
3240 libvpx_vp9_decoder_deps="libvpx"
3241 libvpx_vp9_encoder_deps="libvpx"
3242 libwavpack_encoder_deps="libwavpack"
3243 libwavpack_encoder_select="audio_frame_queue"
3244 libwebp_encoder_deps="libwebp"
3245 libwebp_anim_encoder_deps="libwebp"
3246 libx262_encoder_deps="libx262"
3247 libx264_encoder_deps="libx264"
3248 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3249 libx264rgb_encoder_select="libx264_encoder"
3250 libx265_encoder_deps="libx265"
3251 libxavs_encoder_deps="libxavs"
3252 libxavs2_encoder_deps="libxavs2"
3253 libxvid_encoder_deps="libxvid"
3254 libzvbi_teletext_decoder_deps="libzvbi"
3255 vapoursynth_demuxer_deps="vapoursynth"
3256 videotoolbox_suggest="coreservices"
3257 videotoolbox_deps="corefoundation coremedia corevideo"
3258 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3259
3260 # demuxers / muxers
3261 ac3_demuxer_select="ac3_parser"
3262 act_demuxer_select="riffdec"
3263 aiff_muxer_select="iso_media"
3264 asf_demuxer_select="riffdec"
3265 asf_o_demuxer_select="riffdec"
3266 asf_muxer_select="riffenc"
3267 asf_stream_muxer_select="asf_muxer"
3268 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3269 avi_demuxer_select="iso_media riffdec exif"
3270 avi_muxer_select="riffenc"
3271 caf_demuxer_select="iso_media riffdec"
3272 caf_muxer_select="iso_media"
3273 dash_muxer_select="mp4_muxer"
3274 dash_demuxer_deps="libxml2"
3275 dirac_demuxer_select="dirac_parser"
3276 dts_demuxer_select="dca_parser"
3277 dtshd_demuxer_select="dca_parser"
3278 dv_demuxer_select="dvprofile"
3279 dv_muxer_select="dvprofile"
3280 dxa_demuxer_select="riffdec"
3281 eac3_demuxer_select="ac3_parser"
3282 f4v_muxer_select="mov_muxer"
3283 fifo_muxer_deps="threads"
3284 flac_demuxer_select="flac_parser"
3285 hds_muxer_select="flv_muxer"
3286 hls_muxer_select="mpegts_muxer"
3287 hls_muxer_suggest="gcrypt openssl"
3288 image2_alias_pix_demuxer_select="image2_demuxer"
3289 image2_brender_pix_demuxer_select="image2_demuxer"
3290 ipod_muxer_select="mov_muxer"
3291 ismv_muxer_select="mov_muxer"
3292 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3293 matroska_audio_muxer_select="matroska_muxer"
3294 matroska_demuxer_select="iso_media riffdec"
3295 matroska_demuxer_suggest="bzlib lzo zlib"
3296 matroska_muxer_select="iso_media riffenc"
3297 mmf_muxer_select="riffenc"
3298 mov_demuxer_select="iso_media riffdec"
3299 mov_demuxer_suggest="zlib"
3300 mov_muxer_select="iso_media riffenc rtpenc_chain"
3301 mp3_demuxer_select="mpegaudio_parser"
3302 mp3_muxer_select="mpegaudioheader"
3303 mp4_muxer_select="mov_muxer"
3304 mpegts_demuxer_select="iso_media"
3305 mpegts_muxer_select="adts_muxer latm_muxer"
3306 mpegtsraw_demuxer_select="mpegts_demuxer"
3307 mxf_muxer_select="golomb"
3308 mxf_d10_muxer_select="mxf_muxer"
3309 mxf_opatom_muxer_select="mxf_muxer"
3310 nut_muxer_select="riffenc"
3311 nuv_demuxer_select="riffdec"
3312 oga_muxer_select="ogg_muxer"
3313 ogg_demuxer_select="dirac_parse"
3314 ogv_muxer_select="ogg_muxer"
3315 opus_muxer_select="ogg_muxer"
3316 psp_muxer_select="mov_muxer"
3317 rtp_demuxer_select="sdp_demuxer"
3318 rtp_muxer_select="golomb jpegtables"
3319 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3320 rtsp_demuxer_select="http_protocol rtpdec"
3321 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3322 sap_demuxer_select="sdp_demuxer"
3323 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3324 sdp_demuxer_select="rtpdec"
3325 smoothstreaming_muxer_select="ismv_muxer"
3326 spdif_demuxer_select="adts_header"
3327 spdif_muxer_select="adts_header"
3328 spx_muxer_select="ogg_muxer"
3329 swf_demuxer_suggest="zlib"
3330 tak_demuxer_select="tak_parser"
3331 tg2_muxer_select="mov_muxer"
3332 tgp_muxer_select="mov_muxer"
3333 vobsub_demuxer_select="mpegps_demuxer"
3334 w64_demuxer_select="wav_demuxer"
3335 w64_muxer_select="wav_muxer"
3336 wav_demuxer_select="riffdec"
3337 wav_muxer_select="riffenc"
3338 webm_muxer_select="iso_media riffenc"
3339 webm_dash_manifest_demuxer_select="matroska_demuxer"
3340 wtv_demuxer_select="mpegts_demuxer riffdec"
3341 wtv_muxer_select="mpegts_muxer riffenc"
3342 xmv_demuxer_select="riffdec"
3343 xwma_demuxer_select="riffdec"
3344
3345 # indevs / outdevs
3346 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3347 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3348 alsa_indev_deps="alsa"
3349 alsa_outdev_deps="alsa"
3350 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3351 avfoundation_indev_suggest="coregraphics applicationservices"
3352 avfoundation_indev_extralibs="-framework Foundation"
3353 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3354 caca_outdev_deps="libcaca"
3355 decklink_deps_any="libdl LoadLibrary"
3356 decklink_indev_deps="decklink threads"
3357 decklink_indev_extralibs="-lstdc++"
3358 decklink_outdev_deps="decklink threads"
3359 decklink_outdev_suggest="libklvanc"
3360 decklink_outdev_extralibs="-lstdc++"
3361 dshow_indev_deps="IBaseFilter"
3362 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3363 fbdev_indev_deps="linux_fb_h"
3364 fbdev_outdev_deps="linux_fb_h"
3365 gdigrab_indev_deps="CreateDIBSection"
3366 gdigrab_indev_extralibs="-lgdi32"
3367 gdigrab_indev_select="bmp_decoder"
3368 iec61883_indev_deps="libiec61883"
3369 jack_indev_deps="libjack"
3370 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3371 kmsgrab_indev_deps="libdrm"
3372 lavfi_indev_deps="avfilter"
3373 libcdio_indev_deps="libcdio"
3374 libdc1394_indev_deps="libdc1394"
3375 openal_indev_deps="openal"
3376 opengl_outdev_deps="opengl"
3377 opengl_outdev_suggest="sdl2"
3378 oss_indev_deps_any="sys_soundcard_h"
3379 oss_outdev_deps_any="sys_soundcard_h"
3380 pulse_indev_deps="libpulse"
3381 pulse_outdev_deps="libpulse"
3382 sdl2_outdev_deps="sdl2"
3383 sndio_indev_deps="sndio"
3384 sndio_outdev_deps="sndio"
3385 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3386 v4l2_indev_suggest="libv4l2"
3387 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3388 v4l2_outdev_suggest="libv4l2"
3389 vfwcap_indev_deps="vfw32 vfwcap_defines"
3390 xcbgrab_indev_deps="libxcb"
3391 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3392 xv_outdev_deps="xlib"
3393
3394 # protocols
3395 async_protocol_deps="threads"
3396 bluray_protocol_deps="libbluray"
3397 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3398 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3399 ffrtmpcrypt_protocol_select="tcp_protocol"
3400 ffrtmphttp_protocol_conflict="librtmp_protocol"
3401 ffrtmphttp_protocol_select="http_protocol"
3402 ftp_protocol_select="tcp_protocol"
3403 gopher_protocol_select="network"
3404 http_protocol_select="tcp_protocol"
3405 http_protocol_suggest="zlib"
3406 httpproxy_protocol_select="tcp_protocol"
3407 httpproxy_protocol_suggest="zlib"
3408 https_protocol_select="tls_protocol"
3409 https_protocol_suggest="zlib"
3410 icecast_protocol_select="http_protocol"
3411 mmsh_protocol_select="http_protocol"
3412 mmst_protocol_select="network"
3413 rtmp_protocol_conflict="librtmp_protocol"
3414 rtmp_protocol_select="tcp_protocol"
3415 rtmp_protocol_suggest="zlib"
3416 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3417 rtmpe_protocol_suggest="zlib"
3418 rtmps_protocol_conflict="librtmp_protocol"
3419 rtmps_protocol_select="tls_protocol"
3420 rtmps_protocol_suggest="zlib"
3421 rtmpt_protocol_select="ffrtmphttp_protocol"
3422 rtmpt_protocol_suggest="zlib"
3423 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3424 rtmpte_protocol_suggest="zlib"
3425 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3426 rtmpts_protocol_suggest="zlib"
3427 rtp_protocol_select="udp_protocol"
3428 schannel_conflict="openssl gnutls libtls mbedtls"
3429 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3430 sctp_protocol_select="network"
3431 securetransport_conflict="openssl gnutls libtls mbedtls"
3432 srtp_protocol_select="rtp_protocol srtp"
3433 tcp_protocol_select="network"
3434 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3435 tls_protocol_select="tcp_protocol"
3436 udp_protocol_select="network"
3437 udplite_protocol_select="network"
3438 unix_protocol_deps="sys_un_h"
3439 unix_protocol_select="network"
3440
3441 # external library protocols
3442 libamqp_protocol_deps="librabbitmq"
3443 libamqp_protocol_select="network"
3444 librtmp_protocol_deps="librtmp"
3445 librtmpe_protocol_deps="librtmp"
3446 librtmps_protocol_deps="librtmp"
3447 librtmpt_protocol_deps="librtmp"
3448 librtmpte_protocol_deps="librtmp"
3449 libsmbclient_protocol_deps="libsmbclient gplv3"
3450 libsrt_protocol_deps="libsrt"
3451 libsrt_protocol_select="network"
3452 libssh_protocol_deps="libssh"
3453 libtls_conflict="openssl gnutls mbedtls"
3454 libzmq_protocol_deps="libzmq"
3455 libzmq_protocol_select="network"
3456
3457 # filters
3458 afftdn_filter_deps="avcodec"
3459 afftdn_filter_select="fft"
3460 afftfilt_filter_deps="avcodec"
3461 afftfilt_filter_select="fft"
3462 afir_filter_deps="avcodec"
3463 afir_filter_select="rdft"
3464 amovie_filter_deps="avcodec avformat"
3465 aresample_filter_deps="swresample"
3466 asr_filter_deps="pocketsphinx"
3467 ass_filter_deps="libass"
3468 atempo_filter_deps="avcodec"
3469 atempo_filter_select="rdft"
3470 avgblur_opencl_filter_deps="opencl"
3471 avgblur_vulkan_filter_deps="vulkan libglslang"
3472 azmq_filter_deps="libzmq"
3473 blackframe_filter_deps="gpl"
3474 bm3d_filter_deps="avcodec"
3475 bm3d_filter_select="dct"
3476 boxblur_filter_deps="gpl"
3477 boxblur_opencl_filter_deps="opencl gpl"
3478 bs2b_filter_deps="libbs2b"
3479 chromaber_vulkan_filter_deps="vulkan libglslang"
3480 colorkey_opencl_filter_deps="opencl"
3481 colormatrix_filter_deps="gpl"
3482 convolution_opencl_filter_deps="opencl"
3483 convolve_filter_deps="avcodec"
3484 convolve_filter_select="fft"
3485 coreimage_filter_deps="coreimage appkit"
3486 coreimage_filter_extralibs="-framework OpenGL"
3487 coreimagesrc_filter_deps="coreimage appkit"
3488 coreimagesrc_filter_extralibs="-framework OpenGL"
3489 cover_rect_filter_deps="avcodec avformat gpl"
3490 cropdetect_filter_deps="gpl"
3491 deconvolve_filter_deps="avcodec"
3492 deconvolve_filter_select="fft"
3493 deinterlace_qsv_filter_deps="libmfx"
3494 deinterlace_vaapi_filter_deps="vaapi"
3495 delogo_filter_deps="gpl"
3496 denoise_vaapi_filter_deps="vaapi"
3497 derain_filter_select="dnn"
3498 deshake_filter_select="pixelutils"
3499 deshake_opencl_filter_deps="opencl"
3500 dilation_opencl_filter_deps="opencl"
3501 dnn_processing_filter_select="dnn"
3502 drawtext_filter_deps="libfreetype"
3503 drawtext_filter_suggest="libfontconfig libfribidi"
3504 elbg_filter_deps="avcodec"
3505 eq_filter_deps="gpl"
3506 erosion_opencl_filter_deps="opencl"
3507 fftfilt_filter_deps="avcodec"
3508 fftfilt_filter_select="rdft"
3509 fftdnoiz_filter_deps="avcodec"
3510 fftdnoiz_filter_select="fft"
3511 find_rect_filter_deps="avcodec avformat gpl"
3512 firequalizer_filter_deps="avcodec"
3513 firequalizer_filter_select="rdft"
3514 flite_filter_deps="libflite"
3515 framerate_filter_select="scene_sad"
3516 freezedetect_filter_select="scene_sad"
3517 frei0r_filter_deps="frei0r libdl"
3518 frei0r_src_filter_deps="frei0r libdl"
3519 fspp_filter_deps="gpl"
3520 headphone_filter_select="fft"
3521 histeq_filter_deps="gpl"
3522 hqdn3d_filter_deps="gpl"
3523 interlace_filter_deps="gpl"
3524 kerndeint_filter_deps="gpl"
3525 ladspa_filter_deps="ladspa libdl"
3526 lensfun_filter_deps="liblensfun version3"
3527 lv2_filter_deps="lv2"
3528 mcdeint_filter_deps="avcodec gpl"
3529 movie_filter_deps="avcodec avformat"
3530 mpdecimate_filter_deps="gpl"
3531 mpdecimate_filter_select="pixelutils"
3532 minterpolate_filter_select="scene_sad"
3533 mptestsrc_filter_deps="gpl"
3534 negate_filter_deps="lut_filter"
3535 nlmeans_opencl_filter_deps="opencl"
3536 nnedi_filter_deps="gpl"
3537 ocr_filter_deps="libtesseract"
3538 ocv_filter_deps="libopencv"
3539 openclsrc_filter_deps="opencl"
3540 overlay_opencl_filter_deps="opencl"
3541 overlay_qsv_filter_deps="libmfx"
3542 overlay_qsv_filter_select="qsvvpp"
3543 overlay_vulkan_filter_deps="vulkan libglslang"
3544 owdenoise_filter_deps="gpl"
3545 pad_opencl_filter_deps="opencl"
3546 pan_filter_deps="swresample"
3547 perspective_filter_deps="gpl"
3548 phase_filter_deps="gpl"
3549 pp7_filter_deps="gpl"
3550 pp_filter_deps="gpl postproc"
3551 prewitt_opencl_filter_deps="opencl"
3552 procamp_vaapi_filter_deps="vaapi"
3553 program_opencl_filter_deps="opencl"
3554 pullup_filter_deps="gpl"
3555 removelogo_filter_deps="avcodec avformat swscale"
3556 repeatfields_filter_deps="gpl"
3557 resample_filter_deps="avresample"
3558 roberts_opencl_filter_deps="opencl"
3559 rubberband_filter_deps="librubberband"
3560 sab_filter_deps="gpl swscale"
3561 scale2ref_filter_deps="swscale"
3562 scale_filter_deps="swscale"
3563 scale_qsv_filter_deps="libmfx"
3564 select_filter_select="scene_sad"
3565 sharpness_vaapi_filter_deps="vaapi"
3566 showcqt_filter_deps="avcodec avformat swscale"
3567 showcqt_filter_suggest="libfontconfig libfreetype"
3568 showcqt_filter_select="fft"
3569 showfreqs_filter_deps="avcodec"
3570 showfreqs_filter_select="fft"
3571 showspatial_filter_select="fft"
3572 showspectrum_filter_deps="avcodec"
3573 showspectrum_filter_select="fft"
3574 showspectrumpic_filter_deps="avcodec"
3575 showspectrumpic_filter_select="fft"
3576 signature_filter_deps="gpl avcodec avformat"
3577 sinc_filter_select="rdft"
3578 smartblur_filter_deps="gpl swscale"
3579 sobel_opencl_filter_deps="opencl"
3580 sofalizer_filter_deps="libmysofa avcodec"
3581 sofalizer_filter_select="fft"
3582 spectrumsynth_filter_deps="avcodec"
3583 spectrumsynth_filter_select="fft"
3584 spp_filter_deps="gpl avcodec"
3585 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3586 sr_filter_deps="avformat swscale"
3587 sr_filter_select="dnn"
3588 stereo3d_filter_deps="gpl"
3589 subtitles_filter_deps="avformat avcodec libass"
3590 super2xsai_filter_deps="gpl"
3591 pixfmts_super2xsai_test_deps="super2xsai_filter"
3592 superequalizer_filter_select="rdft"
3593 surround_filter_select="rdft"
3594 tinterlace_filter_deps="gpl"
3595 tinterlace_merge_test_deps="tinterlace_filter"
3596 tinterlace_pad_test_deps="tinterlace_filter"
3597 tonemap_filter_deps="const_nan"
3598 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3599 tonemap_opencl_filter_deps="opencl const_nan"
3600 transpose_opencl_filter_deps="opencl"
3601 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3602 unsharp_opencl_filter_deps="opencl"
3603 uspp_filter_deps="gpl avcodec"
3604 vaguedenoiser_filter_deps="gpl"
3605 vidstabdetect_filter_deps="libvidstab"
3606 vidstabtransform_filter_deps="libvidstab"
3607 libvmaf_filter_deps="libvmaf pthreads"
3608 zmq_filter_deps="libzmq"
3609 zoompan_filter_deps="swscale"
3610 zscale_filter_deps="libzimg const_nan"
3611 scale_vaapi_filter_deps="vaapi"
3612 scale_vulkan_filter_deps="vulkan libglslang"
3613 vpp_qsv_filter_deps="libmfx"
3614 vpp_qsv_filter_select="qsvvpp"
3615 xfade_opencl_filter_deps="opencl"
3616 yadif_cuda_filter_deps="ffnvcodec"
3617 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3618
3619 # examples
3620 avio_list_dir_deps="avformat avutil"
3621 avio_reading_deps="avformat avcodec avutil"
3622 decode_audio_example_deps="avcodec avutil"
3623 decode_video_example_deps="avcodec avutil"
3624 demuxing_decoding_example_deps="avcodec avformat avutil"
3625 encode_audio_example_deps="avcodec avutil"
3626 encode_video_example_deps="avcodec avutil"
3627 extract_mvs_example_deps="avcodec avformat avutil"
3628 filter_audio_example_deps="avfilter avutil"
3629 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3630 filtering_video_example_deps="avfilter avcodec avformat avutil"
3631 http_multiclient_example_deps="avformat avutil fork"
3632 hw_decode_example_deps="avcodec avformat avutil"
3633 metadata_example_deps="avformat avutil"
3634 muxing_example_deps="avcodec avformat avutil swscale"
3635 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3636 remuxing_example_deps="avcodec avformat avutil"
3637 resampling_audio_example_deps="avutil swresample"
3638 scaling_video_example_deps="avutil swscale"
3639 transcode_aac_example_deps="avcodec avformat swresample"
3640 transcoding_example_deps="avfilter avcodec avformat avutil"
3641 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3642 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3643
3644 # EXTRALIBS_LIST
3645 cpu_init_extralibs="pthreads_extralibs"
3646 cws2fws_extralibs="zlib_extralibs"
3647
3648 # libraries, in any order
3649 avcodec_deps="avutil"
3650 avcodec_suggest="libm"
3651 avcodec_select="null_bsf"
3652 avdevice_deps="avformat avcodec avutil"
3653 avdevice_suggest="libm"
3654 avfilter_deps="avutil"
3655 avfilter_suggest="libm"
3656 avformat_deps="avcodec avutil"
3657 avformat_suggest="libm network zlib"
3658 avresample_deps="avutil"
3659 avresample_suggest="libm"
3660 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3661 postproc_deps="avutil gpl"
3662 postproc_suggest="libm"
3663 swresample_deps="avutil"
3664 swresample_suggest="libm libsoxr"
3665 swscale_deps="avutil"
3666 swscale_suggest="libm"
3667
3668 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3669 avfilter_extralibs="pthreads_extralibs"
3670 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3671
3672 # programs
3673 ffmpeg_deps="avcodec avfilter avformat"
3674 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3675                hflip_filter null_filter
3676                transpose_filter trim_filter vflip_filter"
3677 ffmpeg_suggest="ole32 psapi shell32"
3678 ffplay_deps="avcodec avformat swscale swresample sdl2"
3679 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3680 ffplay_suggest="shell32"
3681 ffprobe_deps="avcodec avformat"
3682 ffprobe_suggest="shell32"
3683
3684 # documentation
3685 podpages_deps="perl"
3686 manpages_deps="perl pod2man"
3687 htmlpages_deps="perl"
3688 htmlpages_deps_any="makeinfo_html texi2html"
3689 txtpages_deps="perl makeinfo"
3690 doc_deps_any="manpages htmlpages podpages txtpages"
3691
3692 # default parameters
3693
3694 logfile="ffbuild/config.log"
3695
3696 # installation paths
3697 prefix_default="/usr/local"
3698 bindir_default='${prefix}/bin'
3699 datadir_default='${prefix}/share/ffmpeg'
3700 docdir_default='${prefix}/share/doc/ffmpeg'
3701 incdir_default='${prefix}/include'
3702 libdir_default='${prefix}/lib'
3703 mandir_default='${prefix}/share/man'
3704
3705 # toolchain
3706 ar_default="ar"
3707 cc_default="gcc"
3708 cxx_default="g++"
3709 host_cc_default="gcc"
3710 doxygen_default="doxygen"
3711 install="install"
3712 ln_s_default="ln -s -f"
3713 nm_default="nm -g"
3714 pkg_config_default=pkg-config
3715 ranlib_default="ranlib"
3716 strip_default="strip"
3717 version_script='--version-script'
3718 objformat="elf32"
3719 x86asmexe_default="nasm"
3720 windres_default="windres"
3721 striptype="direct"
3722
3723 # OS
3724 target_os_default=$(tolower $(uname -s))
3725 host_os=$target_os_default
3726
3727 # machine
3728 if test "$target_os_default" = aix; then
3729     arch_default=$(uname -p)
3730     strip_default="strip -X32_64"
3731     nm_default="nm -g -X32_64"
3732 else
3733     arch_default=$(uname -m)
3734 fi
3735 cpu="generic"
3736 intrinsics="none"
3737
3738 # configurable options
3739 enable $PROGRAM_LIST
3740 enable $DOCUMENT_LIST
3741 enable $EXAMPLE_LIST
3742 enable $(filter_out avresample $LIBRARY_LIST)
3743 enable stripping
3744
3745 enable asm
3746 enable debug
3747 enable doc
3748 enable faan faandct faanidct
3749 enable large_tests
3750 enable optimizations
3751 enable runtime_cpudetect
3752 enable safe_bitstream_reader
3753 enable static
3754 enable swscale_alpha
3755 enable valgrind_backtrace
3756
3757 sws_max_filter_size_default=256
3758 set_default sws_max_filter_size
3759
3760 # internal components are enabled by default
3761 enable $EXTRALIBS_LIST
3762
3763 # Avoid external, non-system, libraries getting enabled by dependency resolution
3764 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3765
3766 # build settings
3767 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3768 LIBPREF="lib"
3769 LIBSUF=".a"
3770 FULLNAME='$(NAME)$(BUILDSUF)'
3771 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3772 SLIBPREF="lib"
3773 SLIBSUF=".so"
3774 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3775 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3776 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3777 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3778 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3779 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3780 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3781
3782 asflags_filter=echo
3783 cflags_filter=echo
3784 ldflags_filter=echo
3785
3786 AS_C='-c'
3787 AS_O='-o $@'
3788 CC_C='-c'
3789 CC_E='-E -o $@'
3790 CC_O='-o $@'
3791 CXX_C='-c'
3792 CXX_O='-o $@'
3793 OBJCC_C='-c'
3794 OBJCC_E='-E -o $@'
3795 OBJCC_O='-o $@'
3796 X86ASM_O='-o $@'
3797 LD_O='-o $@'
3798 LD_LIB='-l%'
3799 LD_PATH='-L'
3800 HOSTCC_C='-c'
3801 HOSTCC_E='-E -o $@'
3802 HOSTCC_O='-o $@'
3803 HOSTLD_O='-o $@'
3804 NVCC_C='-c'
3805 NVCC_O='-o $@'
3806
3807 host_extralibs='-lm'
3808 host_cflags_filter=echo
3809 host_ldflags_filter=echo
3810
3811 target_path='$(CURDIR)'
3812
3813 # since the object filename is not given with the -MM flag, the compiler
3814 # is only able to print the basename, and we must add the path ourselves
3815 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3816 DEPFLAGS='-MM'
3817
3818 mkdir -p ffbuild
3819
3820 # find source path
3821 if test -f configure; then
3822     source_path=.
3823 elif test -f src/configure; then
3824     source_path=src
3825 else
3826     source_path=$(cd $(dirname "$0"); pwd)
3827     case "$source_path" in
3828         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3829     esac
3830     test -e "$source_path/config.h" &&
3831         die "Out of tree builds are impossible with config.h in source dir."
3832 fi
3833
3834 for v in "$@"; do
3835     r=${v#*=}
3836     l=${v%"$r"}
3837     r=$(sh_quote "$r")
3838     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3839 done
3840
3841 find_things_extern(){
3842     thing=$1
3843     pattern=$2
3844     file=$source_path/$3
3845     out=${4:-$thing}
3846     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3847 }
3848
3849 find_filters_extern(){
3850     file=$source_path/$1
3851     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3852 }
3853
3854 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3855 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3856 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3857 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3858 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3859 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3860 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3861 CODEC_LIST="
3862     $ENCODER_LIST
3863     $DECODER_LIST
3864 "
3865 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3866 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3867 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3868 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3869
3870 AVCODEC_COMPONENTS_LIST="
3871     $BSF_LIST
3872     $DECODER_LIST
3873     $ENCODER_LIST
3874     $HWACCEL_LIST
3875     $PARSER_LIST
3876 "
3877
3878 AVDEVICE_COMPONENTS_LIST="
3879     $INDEV_LIST
3880     $OUTDEV_LIST
3881 "
3882
3883 AVFILTER_COMPONENTS_LIST="
3884     $FILTER_LIST
3885 "
3886
3887 AVFORMAT_COMPONENTS_LIST="
3888     $DEMUXER_LIST
3889     $MUXER_LIST
3890     $PROTOCOL_LIST
3891 "
3892
3893 ALL_COMPONENTS="
3894     $AVCODEC_COMPONENTS_LIST
3895     $AVDEVICE_COMPONENTS_LIST
3896     $AVFILTER_COMPONENTS_LIST
3897     $AVFORMAT_COMPONENTS_LIST
3898 "
3899
3900 for n in $COMPONENT_LIST; do
3901     v=$(toupper ${n%s})_LIST
3902     eval enable \$$v
3903     eval ${n}_if_any="\$$v"
3904 done
3905
3906 enable $ARCH_EXT_LIST
3907
3908 die_unknown(){
3909     echo "Unknown option \"$1\"."
3910     echo "See $0 --help for available options."
3911     exit 1
3912 }
3913
3914 print_in_columns() {
3915     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3916     {
3917         num_cols = width > col_width ? int(width / col_width) : 1;
3918         num_rows = int((NF + num_cols-1) / num_cols);
3919         y = x = 1;
3920         for (y = 1; y <= num_rows; y++) {
3921             i = y;
3922             for (x = 1; x <= num_cols; x++) {
3923                 if (i <= NF) {
3924                   line = sprintf("%s%-" col_width "s", line, $i);
3925                 }
3926                 i = i + num_rows;
3927             }
3928             print line; line = "";
3929         }
3930     }' | sed 's/ *$//'
3931 }
3932
3933 show_list() {
3934     suffix=_$1
3935     shift
3936     echo $* | sed s/$suffix//g | print_in_columns
3937     exit 0
3938 }
3939
3940 rand_list(){
3941     IFS=', '
3942     set -- $*
3943     unset IFS
3944     for thing; do
3945         comp=${thing%:*}
3946         prob=${thing#$comp}
3947         prob=${prob#:}
3948         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3949         echo "prob ${prob:-0.5}"
3950         printf '%s\n' $comp
3951     done
3952 }
3953
3954 do_random(){
3955     action=$1
3956     shift
3957     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3958     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3959 }
3960
3961 for opt do
3962     optval="${opt#*=}"
3963     case "$opt" in
3964         --extra-ldflags=*)
3965             add_ldflags $optval
3966         ;;
3967         --extra-ldexeflags=*)
3968             add_ldexeflags $optval
3969         ;;
3970         --extra-ldsoflags=*)
3971             add_ldsoflags $optval
3972         ;;
3973         --extra-ldlibflags=*)
3974             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3975                  "removed in the future. Use --extra-ldsoflags instead."
3976             add_ldsoflags $optval
3977         ;;
3978         --extra-libs=*)
3979             add_extralibs $optval
3980         ;;
3981         --disable-devices)
3982             disable $INDEV_LIST $OUTDEV_LIST
3983         ;;
3984         --enable-debug=*)
3985             debuglevel="$optval"
3986         ;;
3987         --disable-programs)
3988             disable $PROGRAM_LIST
3989         ;;
3990         --disable-everything)
3991             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3992         ;;
3993         --disable-all)
3994             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3995             disable $LIBRARY_LIST $PROGRAM_LIST doc
3996             enable avutil
3997         ;;
3998         --enable-random|--disable-random)
3999             action=${opt%%-random}
4000             do_random ${action#--} $COMPONENT_LIST
4001         ;;
4002         --enable-random=*|--disable-random=*)
4003             action=${opt%%-random=*}
4004             do_random ${action#--} $optval
4005         ;;
4006         --enable-sdl)
4007             enable sdl2
4008         ;;
4009         --enable-*=*|--disable-*=*)
4010             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4011             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4012             eval list=\$$(toupper $thing)_LIST
4013             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4014             list=$(filter "$name" $list)
4015             [ "$list" = "" ] && warn "Option $opt did not match anything"
4016             test $action = enable && warn_if_gets_disabled $list
4017             $action $list
4018         ;;
4019         --enable-yasm|--disable-yasm)
4020             warn "The ${opt} option is only provided for compatibility and will be\n"\
4021                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4022             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4023         ;;
4024         --yasmexe=*)
4025             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4026                  "removed in the future. Use --x86asmexe instead."
4027             x86asmexe="$optval"
4028         ;;
4029         --enable-?*|--disable-?*)
4030             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4031             if is_in $option $COMPONENT_LIST; then
4032                 test $action = disable && action=unset
4033                 eval $action \$$(toupper ${option%s})_LIST
4034             elif is_in $option $CMDLINE_SELECT; then
4035                 $action $option
4036             else
4037                 die_unknown $opt
4038             fi
4039         ;;
4040         --list-*)
4041             NAME="${opt#--list-}"
4042             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4043             NAME=${NAME%s}
4044             eval show_list $NAME \$$(toupper $NAME)_LIST
4045         ;;
4046         --help|-h) show_help
4047         ;;
4048         --quiet|-q) quiet=yes
4049         ;;
4050         --fatal-warnings) enable fatal_warnings
4051         ;;
4052         --libfuzzer=*)
4053             libfuzzer_path="$optval"
4054         ;;
4055         *)
4056             optname="${opt%%=*}"
4057             optname="${optname#--}"
4058             optname=$(echo "$optname" | sed 's/-/_/g')
4059             if is_in $optname $CMDLINE_SET; then
4060                 eval $optname='$optval'
4061             elif is_in $optname $CMDLINE_APPEND; then
4062                 append $optname "$optval"
4063             else
4064                 die_unknown $opt
4065             fi
4066         ;;
4067     esac
4068 done
4069
4070 for e in $env; do
4071     eval "export $e"
4072 done
4073
4074 if disabled autodetect; then
4075
4076     # Unless iconv is explicitely disabled by the user, we still want to probe
4077     # for the iconv from the libc.
4078     disabled iconv || enable libc_iconv
4079
4080     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4081     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4082 fi
4083 # Mark specifically enabled, but normally autodetected libraries as requested.
4084 for lib in $AUTODETECT_LIBS; do
4085     enabled $lib && request $lib
4086 done
4087 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4088 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4089 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4090
4091 disabled logging && logfile=/dev/null
4092
4093 # command line configuration sanity checks
4094
4095 # we need to build at least one lib type
4096 if ! enabled_any static shared; then
4097     cat <<EOF
4098 At least one library type must be built.
4099 Specify --enable-static to build the static libraries or --enable-shared to
4100 build the shared libraries as well. To only build the shared libraries specify
4101 --disable-static in addition to --enable-shared.
4102 EOF
4103     exit 1
4104 fi
4105
4106 die_license_disabled() {
4107     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4108 }
4109
4110 die_license_disabled_gpl() {
4111     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4112 }
4113
4114 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4115 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4116
4117 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4118 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4119
4120 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4121
4122 if enabled nonfree; then
4123     license="nonfree and unredistributable"
4124 elif enabled gplv3; then
4125     license="GPL version 3 or later"
4126 elif enabled lgplv3; then
4127     license="LGPL version 3 or later"
4128 elif enabled gpl; then
4129     license="GPL version 2 or later"
4130 else
4131     license="LGPL version 2.1 or later"
4132 fi
4133
4134 enabled_all gnutls openssl &&
4135     die "GnuTLS and OpenSSL must not be enabled at the same time."
4136
4137 enabled_all gnutls mbedtls &&
4138     die "GnuTLS and mbedTLS must not be enabled at the same time."
4139
4140 enabled_all openssl mbedtls &&
4141     die "OpenSSL and mbedTLS must not be enabled at the same time."
4142
4143 # Disable all the library-specific components if the library itself
4144 # is disabled, see AVCODEC_LIST and following _LIST variables.
4145
4146 disable_components(){
4147     disabled ${1} && disable $(
4148         eval components="\$$(toupper ${1})_COMPONENTS"
4149         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4150     )
4151 }
4152
4153 map 'disable_components $v' $LIBRARY_LIST
4154
4155 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4156 set >> $logfile
4157
4158 test -n "$valgrind" && toolchain="valgrind-memcheck"
4159
4160 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4161     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4162     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4163 }
4164
4165 case "$toolchain" in
4166     *-asan)
4167         cc_default="${toolchain%-asan}"
4168         add_cflags  -fsanitize=address
4169         add_ldflags -fsanitize=address
4170     ;;
4171     *-msan)
4172         cc_default="${toolchain%-msan}"
4173         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4174         add_ldflags -fsanitize=memory
4175     ;;
4176     *-tsan)
4177         cc_default="${toolchain%-tsan}"
4178         add_cflags  -fsanitize=thread
4179         add_ldflags -fsanitize=thread
4180         case "$toolchain" in
4181             gcc-tsan)
4182                 add_cflags  -fPIC
4183                 add_ldflags -fPIC
4184                 ;;
4185         esac
4186     ;;
4187     *-usan)
4188         cc_default="${toolchain%-usan}"
4189         add_cflags  -fsanitize=undefined
4190         add_ldflags -fsanitize=undefined
4191     ;;
4192     valgrind-*)
4193         target_exec_default="valgrind"
4194         case "$toolchain" in
4195             valgrind-massif)
4196                 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"
4197                 ;;
4198             valgrind-memcheck)
4199                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4200                 ;;
4201         esac
4202     ;;
4203     msvc)
4204         # Check whether the current MSVC version needs the C99 converter.
4205         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4206         # support enough of C99 to build ffmpeg. Default to the new
4207         # behaviour if the regexp was unable to match anything, since this
4208         # successfully parses the version number of existing supported
4209         # versions that require the converter (MSVC 2010 and 2012).
4210         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4211         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4212             cc_default="cl.exe"
4213             cxx_default="cl.exe"
4214         else
4215             die "Unsupported MSVC version (2013 or newer required)"
4216         fi
4217         ld_default="$source_path/compat/windows/mslink"
4218         nm_default="dumpbin.exe -symbols"
4219         ar_default="lib.exe"
4220         case "$arch" in
4221         aarch64|arm64)
4222             as_default="armasm64.exe"
4223             ;;
4224         arm*)
4225             as_default="armasm.exe"
4226             ;;
4227         esac
4228         target_os_default="win32"
4229         # Use a relative path for TMPDIR. This makes sure all the
4230         # ffconf temp files are written with a relative path, avoiding
4231         # issues with msys/win32 path conversion for MSVC parameters
4232         # such as -Fo<file> or -out:<file>.
4233         TMPDIR=.
4234     ;;
4235     icl)
4236         cc_default="icl"
4237         ld_default="xilink"
4238         nm_default="dumpbin -symbols"
4239         ar_default="xilib"
4240         target_os_default="win32"
4241         TMPDIR=.
4242     ;;
4243     gcov)
4244         add_cflags  -fprofile-arcs -ftest-coverage
4245         add_ldflags -fprofile-arcs -ftest-coverage
4246     ;;
4247     llvm-cov)
4248         add_cflags -fprofile-arcs -ftest-coverage
4249         add_ldflags --coverage
4250     ;;
4251     hardened)
4252         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4253         add_cflags   -fno-strict-overflow -fstack-protector-all
4254         add_ldflags  -Wl,-z,relro -Wl,-z,now
4255         add_cflags   -fPIE
4256         add_ldexeflags -fPIE -pie
4257     ;;
4258     ?*)
4259         die "Unknown toolchain $toolchain"
4260     ;;
4261 esac
4262
4263 if test -n "$cross_prefix"; then
4264     test -n "$arch" && test -n "$target_os" ||
4265         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4266     enable cross_compile
4267 fi
4268
4269 set_default target_os
4270 if test "$target_os" = android; then
4271     cc_default="clang"
4272 fi
4273
4274 ar_default="${cross_prefix}${ar_default}"
4275 cc_default="${cross_prefix}${cc_default}"
4276 cxx_default="${cross_prefix}${cxx_default}"
4277 nm_default="${cross_prefix}${nm_default}"
4278 pkg_config_default="${cross_prefix}${pkg_config_default}"
4279 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4280     ranlib_default="${cross_prefix}${ranlib_default} -D"
4281 else
4282     ranlib_default="${cross_prefix}${ranlib_default}"
4283 fi
4284 strip_default="${cross_prefix}${strip_default}"
4285 windres_default="${cross_prefix}${windres_default}"
4286
4287 sysinclude_default="${sysroot}/usr/include"
4288
4289 if enabled cuda_sdk; then
4290     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4291     enable cuda_nvcc
4292 fi
4293
4294 if enabled cuda_nvcc; then
4295     nvcc_default="nvcc"
4296     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4297 else
4298     nvcc_default="clang"
4299     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4300     NVCC_C=""
4301 fi
4302
4303 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4304     target_exec x86asmexe nvcc
4305 enabled cross_compile || host_cc_default=$cc
4306 set_default host_cc
4307
4308 pkg_config_fail_message=""
4309 if ! $pkg_config --version >/dev/null 2>&1; then
4310     warn "$pkg_config not found, library detection may fail."
4311     pkg_config=false
4312 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4313     pkg_config_fail_message="
4314 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4315 fi
4316
4317 if test $doxygen != $doxygen_default && \
4318   ! $doxygen --version >/dev/null 2>&1; then
4319     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4320 fi
4321
4322 exesuf() {
4323     case $1 in
4324         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4325     esac
4326 }
4327
4328 EXESUF=$(exesuf $target_os)
4329 HOSTEXESUF=$(exesuf $host_os)
4330
4331 # set temporary file name
4332 : ${TMPDIR:=$TEMPDIR}
4333 : ${TMPDIR:=$TMP}
4334 : ${TMPDIR:=/tmp}
4335
4336 if [ -n "$tempprefix" ] ; then
4337     mktemp(){
4338         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4339         echo "$tmpname"
4340         mkdir "$tmpname"
4341     }
4342 elif ! test_cmd mktemp -u XXXXXX; then
4343     # simple replacement for missing mktemp
4344     # NOT SAFE FOR GENERAL USE
4345     mktemp(){
4346         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4347         echo "$tmpname"
4348         mkdir "$tmpname"
4349     }
4350 fi
4351
4352 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4353     die "Unable to create temporary directory in $TMPDIR."
4354
4355 tmpfile(){
4356     tmp="${FFTMPDIR}/test"$2
4357     (set -C; exec > $tmp) 2> /dev/null ||
4358         die "Unable to create temporary file in $FFTMPDIR."
4359     eval $1=$tmp
4360 }
4361
4362 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4363 trap 'exit 2' INT
4364
4365 tmpfile TMPASM .asm
4366 tmpfile TMPC   .c
4367 tmpfile TMPCPP .cpp
4368 tmpfile TMPE   $EXESUF
4369 tmpfile TMPH   .h
4370 tmpfile TMPM   .m
4371 tmpfile TMPCU  .cu
4372 tmpfile TMPO   .o
4373 tmpfile TMPS   .S
4374 tmpfile TMPSH  .sh
4375 tmpfile TMPV   .ver
4376
4377 unset -f mktemp
4378
4379 chmod +x $TMPE
4380
4381 # make sure we can execute files in $TMPDIR
4382 cat > $TMPSH 2>> $logfile <<EOF
4383 #! /bin/sh
4384 EOF
4385 chmod +x $TMPSH >> $logfile 2>&1
4386 if ! $TMPSH >> $logfile 2>&1; then
4387     cat <<EOF
4388 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4389 variable to another directory and make sure that it is not mounted noexec.
4390 EOF
4391     die "Sanity test failed."
4392 fi
4393
4394 armasm_flags(){
4395     for flag; do
4396         case $flag in
4397             # Filter out MSVC cl.exe options from cflags that shouldn't
4398             # be passed to gas-preprocessor
4399             -M[TD]*)                                            ;;
4400             *)                  echo $flag                      ;;
4401         esac
4402    done
4403 }
4404
4405 cparser_flags(){
4406     for flag; do
4407         case $flag in
4408             -Wno-switch)             echo -Wno-switch-enum ;;
4409             -Wno-format-zero-length) ;;
4410             -Wdisabled-optimization) ;;
4411             -Wno-pointer-sign)       echo -Wno-other ;;
4412             *)                       echo $flag ;;
4413         esac
4414     done
4415 }
4416
4417 msvc_common_flags(){
4418     for flag; do
4419         case $flag in
4420             # In addition to specifying certain flags under the compiler
4421             # specific filters, they must be specified here as well or else the
4422             # generic catch all at the bottom will print the original flag.
4423             -Wall)                ;;
4424             -Wextra)              ;;
4425             -std=c*)              ;;
4426             # Common flags
4427             -fomit-frame-pointer) ;;
4428             -g)                   echo -Z7 ;;
4429             -fno-math-errno)      ;;
4430             -fno-common)          ;;
4431             -fno-signed-zeros)    ;;
4432             -fPIC)                ;;
4433             -mthumb)              ;;
4434             -march=*)             ;;
4435             -lz)                  echo zlib.lib ;;
4436             -lx264)               echo libx264.lib ;;
4437             -lstdc++)             ;;
4438             -l*)                  echo ${flag#-l}.lib ;;
4439             -LARGEADDRESSAWARE)   echo $flag ;;
4440             -L*)                  echo -libpath:${flag#-L} ;;
4441             *)                    echo $flag ;;
4442         esac
4443     done
4444 }
4445
4446 msvc_flags(){
4447     msvc_common_flags "$@"
4448     for flag; do
4449         case $flag in
4450             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4451                                        -wd4554 ;;
4452             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4453                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4454                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4455                                        -wd4307 \
4456                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4457         esac
4458     done
4459 }
4460
4461 icl_flags(){
4462     msvc_common_flags "$@"
4463     for flag; do
4464         case $flag in
4465             # Despite what Intel's documentation says -Wall, which is supported
4466             # on Windows, does enable remarks so disable them here.
4467             -Wall)                echo $flag -Qdiag-disable:remark ;;
4468             -std=c99)             echo -Qstd=c99 ;;
4469             -flto)                echo -ipo ;;
4470         esac
4471     done
4472 }
4473
4474 icc_flags(){
4475     for flag; do
4476         case $flag in
4477             -flto)                echo -ipo ;;
4478             *)                    echo $flag ;;
4479         esac
4480     done
4481 }
4482
4483 suncc_flags(){
4484     for flag; do
4485         case $flag in
4486             -march=*|-mcpu=*)
4487                 case "${flag#*=}" in
4488                     native)                   echo -xtarget=native       ;;
4489                     v9|niagara)               echo -xarch=sparc          ;;
4490                     ultrasparc)               echo -xarch=sparcvis       ;;
4491                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4492                     i586|pentium)             echo -xchip=pentium        ;;
4493                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4494                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4495                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4496                     pentium4*)          echo -xtarget=pentium4           ;;
4497                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4498                     *-sse3)             echo -xarch=sse3                 ;;
4499                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4500                     bonnell)                   echo -xarch=ssse3         ;;
4501                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4502                     westmere)                  echo -xtarget=westmere    ;;
4503                     silvermont)                echo -xarch=sse4_2        ;;
4504                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4505                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4506                                                echo -xarch=avx           ;;
4507                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4508                     btver1)                    echo -xarch=amdsse4a      ;;
4509                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4510                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4511                     k8|opteron|athlon64|athlon-fx)
4512                                                echo -xarch=sse2a         ;;
4513                     athlon*)                   echo -xarch=pentium_proa  ;;
4514                 esac
4515                 ;;
4516             -std=c99)             echo -xc99              ;;
4517             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4518             -fPIC)                echo -KPIC -xcode=pic32 ;;
4519             -W*,*)                echo $flag              ;;
4520             -f*-*|-W*|-mimpure-text)                      ;;
4521             -shared)              echo -G                 ;;
4522             *)                    echo $flag              ;;
4523         esac
4524     done
4525 }
4526
4527 probe_cc(){
4528     pfx=$1
4529     _cc=$2
4530     first=$3
4531
4532     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4533     unset _ld_o _ldflags _ld_lib _ld_path
4534     unset _depflags _DEPCMD _DEPFLAGS
4535     _flags_filter=echo
4536
4537     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4538         true # no-op to avoid reading stdin in following checks
4539     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4540         _type=llvm_gcc
4541         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4542         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4543         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4544         _cflags_speed='-O3'
4545         _cflags_size='-Os'
4546     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4547         _type=gcc
4548         gcc_version=$($_cc --version | head -n1)
4549         gcc_basever=$($_cc -dumpversion)
4550         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4551         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4552         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4553         case $gcc_basever in
4554             2) ;;
4555             2.*) ;;
4556             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4557         esac
4558         if [ "$first" = true ]; then
4559             case $gcc_basever in
4560                 4.2*)
4561                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4562             esac
4563         fi
4564         _cflags_speed='-O3'
4565         _cflags_size='-Os'
4566     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4567         _type=icc
4568         _ident=$($_cc --version | head -n1)
4569         _depflags='-MMD'
4570         _cflags_speed='-O3'
4571         _cflags_size='-Os'
4572         _cflags_noopt='-O1'
4573         _flags_filter=icc_flags
4574     elif $_cc -v 2>&1 | grep -q xlc; then
4575         _type=xlc
4576         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4577         _cflags_speed='-O5'
4578         _cflags_size='-O5 -qcompact'
4579     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4580         test -d "$sysroot" || die "No valid sysroot specified."
4581         _type=armcc
4582         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4583         armcc_conf="$PWD/armcc.conf"
4584         $_cc --arm_linux_configure                 \
4585              --arm_linux_config_file="$armcc_conf" \
4586              --configure_sysroot="$sysroot"        \
4587              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4588              die "Error creating armcc configuration file."
4589         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4590         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4591         as_default="${cross_prefix}gcc"
4592         _depflags='-MMD'
4593         _cflags_speed='-O3'
4594         _cflags_size='-Os'
4595     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4596         _type=clang
4597         _ident=$($_cc --version 2>/dev/null | head -n1)
4598         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4599         _cflags_speed='-O3'
4600         _cflags_size='-Oz'
4601     elif $_cc -V 2>&1 | grep -q Sun; then
4602         _type=suncc
4603         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4604         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4605         _DEPFLAGS='-xM1 -xc99'
4606         _ldflags='-std=c99'
4607         _cflags_speed='-O5'
4608         _cflags_size='-O5 -xspace'
4609         _flags_filter=suncc_flags
4610     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4611         _type=pathscale
4612         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4613         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4614         _cflags_speed='-O2'
4615         _cflags_size='-Os'
4616         _flags_filter='filter_out -Wdisabled-optimization'
4617     elif $_cc -v 2>&1 | grep -q Open64; then
4618         _type=open64
4619         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4620         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4621         _cflags_speed='-O2'
4622         _cflags_size='-Os'
4623         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4624     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4625         _type=armasm
4626         _ident=$($_cc | head -n1)
4627         # 4509: "This form of conditional instruction is deprecated"
4628         _flags="-nologo -ignore 4509"
4629         _flags_filter=armasm_flags
4630     elif $_cc 2>&1 | grep -q Intel; then
4631         _type=icl
4632         _ident=$($_cc 2>&1 | head -n1)
4633         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4634         # Not only is O3 broken on 13.x+ but it is slower on all previous
4635         # versions (tested) as well.
4636         _cflags_speed="-O2"
4637         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4638         if $_cc 2>&1 | grep -q Linker; then
4639             _ld_o='-out:$@'
4640         else
4641             _ld_o='-Fe$@'
4642         fi
4643         _cc_o='-Fo$@'
4644         _cc_e='-P'
4645         _flags_filter=icl_flags
4646         _ld_lib='lib%.a'
4647         _ld_path='-libpath:'
4648         # -Qdiag-error to make icl error when seeing certain unknown arguments
4649         _flags='-nologo -Qdiag-error:4044,10157'
4650         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4651         # with MSVC which enables it by default.
4652         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4653         disable stripping
4654     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4655         # lld can emulate multiple different linkers; in ms link.exe mode,
4656         # the -? parameter gives the help output which contains an identifyable
4657         # string, while it gives an error in other modes.
4658         _type=lld-link
4659         # The link.exe mode doesn't have a switch for getting the version,
4660         # but we can force it back to gnu mode and get the version from there.
4661         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4662         _ld_o='-out:$@'
4663         _flags_filter=msvc_flags
4664         _ld_lib='lib%.a'
4665         _ld_path='-libpath:'
4666     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4667         _type=msvc
4668         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4669             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4670         else
4671             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4672         fi
4673         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4674         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4675         _cflags_speed="-O2"
4676         _cflags_size="-O1"
4677         _cflags_noopt="-O1"
4678         if $_cc -nologo- 2>&1 | grep -q Linker; then
4679             _ld_o='-out:$@'
4680         else
4681             _ld_o='-Fe$@'
4682         fi
4683         _cc_o='-Fo$@'
4684         _cc_e='-P -Fi$@'
4685         _flags_filter=msvc_flags
4686         _ld_lib='lib%.a'
4687         _ld_path='-libpath:'
4688         _flags='-nologo'
4689         disable stripping
4690     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4691         _type=cparser
4692         _ident=$($_cc --version | head -n1)
4693         _depflags='-MMD'
4694         _cflags_speed='-O4'
4695         _cflags_size='-O2'
4696         _flags_filter=cparser_flags
4697     fi
4698
4699     eval ${pfx}_type=\$_type
4700     eval ${pfx}_ident=\$_ident
4701 }
4702
4703 set_ccvars(){
4704     eval ${1}_C=\${_cc_c-\${${1}_C}}
4705     eval ${1}_E=\${_cc_e-\${${1}_E}}
4706     eval ${1}_O=\${_cc_o-\${${1}_O}}
4707
4708     if [ -n "$_depflags" ]; then
4709         eval ${1}_DEPFLAGS=\$_depflags
4710     else
4711         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4712         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4713         eval DEP${1}FLAGS=\$_flags
4714     fi
4715 }
4716
4717 probe_cc cc "$cc" "true"
4718 cflags_filter=$_flags_filter
4719 cflags_speed=$_cflags_speed
4720 cflags_size=$_cflags_size
4721 cflags_noopt=$_cflags_noopt
4722 add_cflags $_flags $_cflags
4723 cc_ldflags=$_ldflags
4724 set_ccvars CC
4725 set_ccvars CXX
4726
4727 probe_cc hostcc "$host_cc"
4728 host_cflags_filter=$_flags_filter
4729 host_cflags_speed=$_cflags_speed
4730 add_host_cflags  $_flags $_cflags
4731 set_ccvars HOSTCC
4732
4733 test -n "$cc_type" && enable $cc_type ||
4734     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4735
4736 : ${as_default:=$cc}
4737 : ${objcc_default:=$cc}
4738 : ${dep_cc_default:=$cc}
4739 : ${ld_default:=$cc}
4740 : ${host_ld_default:=$host_cc}
4741 set_default ar as objcc dep_cc ld ln_s host_ld windres
4742
4743 probe_cc as "$as"
4744 asflags_filter=$_flags_filter
4745 add_asflags $_flags $_cflags
4746 set_ccvars AS
4747
4748 probe_cc objcc "$objcc"
4749 objcflags_filter=$_flags_filter
4750 add_objcflags $_flags $_cflags
4751 set_ccvars OBJC
4752
4753 probe_cc ld "$ld"
4754 ldflags_filter=$_flags_filter
4755 add_ldflags $_flags $_ldflags
4756 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4757 LD_O=${_ld_o-$LD_O}
4758 LD_LIB=${_ld_lib-$LD_LIB}
4759 LD_PATH=${_ld_path-$LD_PATH}
4760
4761 probe_cc hostld "$host_ld"
4762 host_ldflags_filter=$_flags_filter
4763 add_host_ldflags $_flags $_ldflags
4764 HOSTLD_O=${_ld_o-$HOSTLD_O}
4765
4766 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4767     probe_cc depcc "$dep_cc"
4768     CCDEP=${_DEPCMD:-$DEPCMD}
4769     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4770     DEPCCFLAGS=$_flags
4771 fi
4772
4773 if $ar 2>&1 | grep -q Microsoft; then
4774     arflags="-nologo"
4775     ar_o='-out:$@'
4776 elif $ar 2>&1 | grep -q "\[D\] "; then
4777     arflags="rcD"
4778     ar_o='$@'
4779 else
4780     arflags="rc"
4781     ar_o='$@'
4782 fi
4783
4784 add_cflags $extra_cflags
4785 add_cxxflags $extra_cxxflags
4786 add_objcflags $extra_objcflags
4787 add_asflags $extra_cflags
4788
4789 if test -n "$sysroot"; then
4790     case "$cc_type" in
4791         gcc|llvm_gcc|clang)
4792             add_cppflags --sysroot="$sysroot"
4793             add_ldflags --sysroot="$sysroot"
4794         ;;
4795     esac
4796 fi
4797
4798 if test "$cpu" = host; then
4799     enabled cross_compile &&
4800         warn "--cpu=host makes no sense when cross-compiling."
4801
4802     case "$cc_type" in
4803         gcc|llvm_gcc)
4804             check_native(){
4805                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4806                 sed -n "/cc1.*$1=/{
4807                             s/.*$1=\\([^ ]*\\).*/\\1/
4808                             p
4809                             q
4810                         }" $TMPE
4811             }
4812             cpu=$(check_native -march || check_native -mcpu)
4813         ;;
4814         clang)
4815             check_native(){
4816                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4817                 sed -n "/cc1.*-target-cpu /{
4818                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4819                             p
4820                             q
4821                         }" $TMPE
4822             }
4823             cpu=$(check_native -march)
4824         ;;
4825     esac
4826
4827     test "${cpu:-host}" = host &&
4828         die "--cpu=host not supported with compiler $cc"
4829 fi
4830
4831 # Deal with common $arch aliases
4832 case "$arch" in
4833     aarch64|arm64)
4834         arch="aarch64"
4835     ;;
4836     arm*|iPad*|iPhone*)
4837         arch="arm"
4838     ;;
4839     mips*|IP*)
4840         case "$arch" in
4841         *el)
4842             add_cppflags -EL
4843             add_ldflags -EL
4844         ;;
4845         *eb)
4846             add_cppflags -EB
4847             add_ldflags -EB
4848         ;;
4849         esac
4850         arch="mips"
4851     ;;
4852     parisc*|hppa*)
4853         arch="parisc"
4854     ;;
4855     "Power Macintosh"|ppc*|powerpc*)
4856         arch="ppc"
4857     ;;
4858     s390|s390x)
4859         arch="s390"
4860     ;;
4861     sh4|sh)
4862         arch="sh4"
4863     ;;
4864     sun4*|sparc*)
4865         arch="sparc"
4866     ;;
4867     tilegx|tile-gx)
4868         arch="tilegx"
4869     ;;
4870     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4871         arch="x86"
4872     ;;
4873 esac
4874
4875 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4876 enable $arch
4877
4878 # Add processor-specific flags
4879 if enabled aarch64; then
4880
4881     case $cpu in
4882         armv*)
4883             cpuflags="-march=$cpu"
4884         ;;
4885         *)
4886             cpuflags="-mcpu=$cpu"
4887         ;;
4888     esac
4889
4890 elif enabled alpha; then
4891
4892     cpuflags="-mcpu=$cpu"
4893
4894 elif enabled arm; then
4895
4896     check_arm_arch() {
4897         test_cpp_condition stddef.h \
4898             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4899             $cpuflags
4900     }
4901
4902     probe_arm_arch() {
4903         if   check_arm_arch 4;        then echo armv4
4904         elif check_arm_arch 4T;       then echo armv4t
4905         elif check_arm_arch 5;        then echo armv5
4906         elif check_arm_arch 5E;       then echo armv5e
4907         elif check_arm_arch 5T;       then echo armv5t
4908         elif check_arm_arch 5TE;      then echo armv5te
4909         elif check_arm_arch 5TEJ;     then echo armv5te
4910         elif check_arm_arch 6;        then echo armv6
4911         elif check_arm_arch 6J;       then echo armv6j
4912         elif check_arm_arch 6K;       then echo armv6k
4913         elif check_arm_arch 6Z;       then echo armv6z
4914         elif check_arm_arch 6KZ;      then echo armv6zk
4915         elif check_arm_arch 6ZK;      then echo armv6zk
4916         elif check_arm_arch 6T2;      then echo armv6t2
4917         elif check_arm_arch 7;        then echo armv7
4918         elif check_arm_arch 7A  7_A;  then echo armv7-a
4919         elif check_arm_arch 7S;       then echo armv7-a
4920         elif check_arm_arch 7R  7_R;  then echo armv7-r
4921         elif check_arm_arch 7M  7_M;  then echo armv7-m
4922         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4923         elif check_arm_arch 8A  8_A;  then echo armv8-a
4924         fi
4925     }
4926
4927     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4928
4929     case $cpu in
4930         armv*)
4931             cpuflags="-march=$cpu"
4932             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4933         ;;
4934         *)
4935             cpuflags="-mcpu=$cpu"
4936             case $cpu in
4937                 cortex-a*)                               subarch=armv7a  ;;
4938                 cortex-r*)                               subarch=armv7r  ;;
4939                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4940                 arm11*)                                  subarch=armv6   ;;
4941                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4942                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4943                 *)                             subarch=$(probe_arm_arch) ;;
4944             esac
4945         ;;
4946     esac
4947
4948     case "$subarch" in
4949         armv5t*)    enable fast_clz                ;;
4950         armv[6-8]*)
4951             enable fast_clz
4952             disabled fast_unaligned || enable fast_unaligned
4953             ;;
4954     esac
4955
4956 elif enabled avr32; then
4957
4958     case $cpu in
4959         ap7[02]0[0-2])
4960             subarch="avr32_ap"
4961             cpuflags="-mpart=$cpu"
4962         ;;
4963         ap)
4964             subarch="avr32_ap"
4965             cpuflags="-march=$cpu"
4966         ;;
4967         uc3[ab]*)
4968             subarch="avr32_uc"
4969             cpuflags="-mcpu=$cpu"
4970         ;;
4971         uc)
4972             subarch="avr32_uc"
4973             cpuflags="-march=$cpu"
4974         ;;
4975     esac
4976
4977 elif enabled bfin; then
4978
4979     cpuflags="-mcpu=$cpu"
4980
4981 elif enabled mips; then
4982
4983     cpuflags="-march=$cpu"
4984
4985     if [ "$cpu" != "generic" ]; then
4986         disable mips32r2
4987         disable mips32r5
4988         disable mips64r2
4989         disable mips32r6
4990         disable mips64r6
4991         disable loongson2
4992         disable loongson3
4993
4994         case $cpu in
4995             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4996                 enable mips32r2
4997                 disable msa
4998             ;;
4999             p5600|i6400|p6600)
5000                 disable mipsdsp
5001                 disable mipsdspr2
5002             ;;
5003             loongson*)
5004                 enable loongson2
5005                 enable loongson3
5006                 enable local_aligned
5007                 enable simd_align_16
5008                 enable fast_64bit
5009                 enable fast_clz
5010                 enable fast_cmov
5011                 enable fast_unaligned
5012                 disable aligned_stack
5013                 disable mipsdsp
5014                 disable mipsdspr2
5015                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5016                 if [ $cc == gcc ]; then
5017                     gcc_version=$(gcc -dumpversion)
5018                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5019                         expensive_optimization_flag=""
5020                     else
5021                         expensive_optimization_flag="-fno-expensive-optimizations"
5022                     fi
5023                 fi
5024                 case $cpu in
5025                     loongson3*)
5026                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5027                     ;;
5028                     loongson2e)
5029                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5030                     ;;
5031                     loongson2f)
5032                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5033                     ;;
5034                 esac
5035             ;;
5036             *)
5037                 # Unknown CPU. Disable everything.
5038                 warn "unknown CPU. Disabling all MIPS optimizations."
5039                 disable mipsfpu
5040                 disable mipsdsp
5041                 disable mipsdspr2
5042                 disable msa
5043                 disable mmi
5044             ;;
5045         esac
5046
5047         case $cpu in
5048             24kc)
5049                 disable mipsfpu
5050                 disable mipsdsp
5051                 disable mipsdspr2
5052             ;;
5053             24kf*)
5054                 disable mipsdsp
5055                 disable mipsdspr2
5056             ;;
5057             24kec|34kc|1004kc)
5058                 disable mipsfpu
5059                 disable mipsdspr2
5060             ;;
5061             24kef*|34kf*|1004kf*)
5062                 disable mipsdspr2
5063             ;;
5064             74kc)
5065                 disable mipsfpu
5066             ;;
5067             p5600)
5068                 enable mips32r5
5069                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5070             ;;
5071             i6400)
5072                 enable mips64r6
5073                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5074             ;;
5075             p6600)
5076                 enable mips64r6
5077                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5078             ;;
5079         esac
5080     else
5081         # We do not disable anything. Is up to the user to disable the unwanted features.
5082         warn 'generic cpu selected'
5083     fi
5084
5085 elif enabled ppc; then
5086
5087     disable ldbrx
5088
5089     case $(tolower $cpu) in
5090         601|ppc601|powerpc601)
5091             cpuflags="-mcpu=601"
5092             disable altivec
5093         ;;
5094         603*|ppc603*|powerpc603*)
5095             cpuflags="-mcpu=603"
5096             disable altivec
5097         ;;
5098         604*|ppc604*|powerpc604*)
5099             cpuflags="-mcpu=604"
5100             disable altivec
5101         ;;
5102         g3|75*|ppc75*|powerpc75*)
5103             cpuflags="-mcpu=750"
5104             disable altivec
5105         ;;
5106         g4|745*|ppc745*|powerpc745*)
5107             cpuflags="-mcpu=7450"
5108             disable vsx
5109         ;;
5110         74*|ppc74*|powerpc74*)
5111             cpuflags="-mcpu=7400"
5112             disable vsx
5113         ;;
5114         g5|970|ppc970|powerpc970)
5115             cpuflags="-mcpu=970"
5116             disable vsx
5117         ;;
5118         power[3-6]*)
5119             cpuflags="-mcpu=$cpu"
5120             disable vsx
5121         ;;
5122         power[7-8]*)
5123             cpuflags="-mcpu=$cpu"
5124         ;;
5125         cell)
5126             cpuflags="-mcpu=cell"
5127             enable ldbrx
5128             disable vsx
5129         ;;
5130         e500mc)
5131             cpuflags="-mcpu=e500mc"
5132             disable altivec
5133         ;;
5134         e500v2)
5135             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5136             disable altivec
5137             disable dcbzl
5138         ;;
5139         e500)
5140             cpuflags="-mcpu=8540 -mhard-float"
5141             disable altivec
5142             disable dcbzl
5143         ;;
5144     esac
5145
5146 elif enabled sparc; then
5147
5148     case $cpu in
5149         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5150             cpuflags="-mcpu=$cpu"
5151         ;;
5152         ultrasparc*|niagara[234])
5153             cpuflags="-mcpu=$cpu"
5154         ;;
5155     esac
5156
5157 elif enabled x86; then
5158
5159     case $cpu in
5160         i[345]86|pentium)
5161             cpuflags="-march=$cpu"
5162             disable i686
5163             disable mmx
5164         ;;
5165         # targets that do NOT support nopl and conditional mov (cmov)
5166         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5167             cpuflags="-march=$cpu"
5168             disable i686
5169         ;;
5170         # targets that do support nopl and conditional mov (cmov)
5171         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5172         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5173         |amdfam10|barcelona|b[dt]ver*|znver*)
5174             cpuflags="-march=$cpu"
5175             enable i686
5176             enable fast_cmov
5177         ;;
5178         # targets that do support conditional mov but on which it's slow
5179         pentium4|pentium4m|prescott|nocona)
5180             cpuflags="-march=$cpu"
5181             enable i686
5182             disable fast_cmov
5183         ;;
5184     esac
5185
5186 fi
5187
5188 if [ "$cpu" != generic ]; then
5189     add_cflags  $cpuflags
5190     add_asflags $cpuflags
5191     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5192 fi
5193
5194 # compiler sanity check
5195 test_exec <<EOF
5196 int main(void){ return 0; }
5197 EOF
5198 if test "$?" != 0; then
5199     echo "$cc is unable to create an executable file."
5200     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5201         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5202         echo "Only do this if you know what cross compiling means."
5203     fi
5204     die "C compiler test failed."
5205 fi
5206
5207 add_cppflags -D_ISOC99_SOURCE
5208 add_cxxflags -D__STDC_CONSTANT_MACROS
5209 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5210
5211 # some compilers silently accept -std=c11, so we also need to check that the
5212 # version macro is defined properly
5213 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5214     add_cflags -std=c11 ||
5215     check_cflags -std=c99
5216
5217 check_cppflags -D_FILE_OFFSET_BITS=64
5218 check_cppflags -D_LARGEFILE_SOURCE
5219
5220 add_host_cppflags -D_ISOC99_SOURCE
5221 check_host_cflags -std=c99
5222 check_host_cflags -Wall
5223 check_host_cflags $host_cflags_speed
5224
5225 check_64bit(){
5226     arch32=$1
5227     arch64=$2
5228     expr=${3:-'sizeof(void *) > 4'}
5229     test_code cc "" "int test[2*($expr) - 1]" &&
5230         subarch=$arch64 || subarch=$arch32
5231     enable $subarch
5232 }
5233
5234 case "$arch" in
5235     aarch64|alpha|ia64)
5236         enabled shared && enable_weak pic
5237     ;;
5238     mips)
5239         check_64bit mips mips64 '_MIPS_SIM > 1'
5240         enabled shared && enable_weak pic
5241     ;;
5242     parisc)
5243         check_64bit parisc parisc64
5244         enabled shared && enable_weak pic
5245     ;;
5246     ppc)
5247         check_64bit ppc ppc64
5248         enabled shared && enable_weak pic
5249     ;;
5250     s390)
5251         check_64bit s390 s390x
5252         enabled shared && enable_weak pic
5253     ;;
5254     sparc)
5255         check_64bit sparc sparc64
5256         enabled shared && enable_weak pic
5257     ;;
5258     x86)
5259         check_64bit x86_32 x86_64
5260         # Treat x32 as x64 for now. Note it also needs pic if shared
5261         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5262             subarch=x86_64 && enable x86_64 && disable x86_32
5263         if enabled x86_64; then
5264             enabled shared && enable_weak pic
5265             objformat=elf64
5266         fi
5267     ;;
5268 esac
5269
5270 # OS specific
5271 case $target_os in
5272     aix)
5273         SHFLAGS=-shared
5274         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5275         enabled shared && add_ldflags -Wl,-brtl
5276         arflags='-Xany -r -c'
5277         striptype=""
5278         ;;
5279     android)
5280         disable symver
5281         enable section_data_rel_ro
5282         add_cflags -fPIE
5283         add_ldexeflags -fPIE -pie
5284         SLIB_INSTALL_NAME='$(SLIBNAME)'
5285         SLIB_INSTALL_LINKS=
5286         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5287         ;;
5288     haiku)
5289         prefix_default="/boot/common"
5290         network_extralibs="-lnetwork"
5291         host_extralibs=
5292         ;;
5293     sunos)
5294         SHFLAGS='-shared -Wl,-h,$$(@F)'
5295         enabled x86 && append SHFLAGS -mimpure-text
5296         network_extralibs="-lsocket -lnsl"
5297         add_cppflags -D__EXTENSIONS__
5298         # When using suncc to build, the Solaris linker will mark
5299         # an executable with each instruction set encountered by
5300         # the Solaris assembler.  As our libraries contain their own
5301         # guards for processor-specific code, instead suppress
5302         # generation of the HWCAPS ELF section on Solaris x86 only.
5303         enabled_all suncc x86 &&
5304             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5305             add_ldflags -Wl,-M,mapfile
5306         nm_default='nm -P -g'
5307         striptype=""
5308         version_script='-M'
5309         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5310         ;;
5311     netbsd)
5312         disable symver
5313         oss_indev_extralibs="-lossaudio"
5314         oss_outdev_extralibs="-lossaudio"
5315         enabled gcc || check_ldflags -Wl,-zmuldefs
5316         ;;
5317     openbsd|bitrig)
5318         disable symver
5319         enable section_data_rel_ro
5320         striptype=""
5321         SHFLAGS='-shared'
5322         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5323         SLIB_INSTALL_LINKS=
5324         oss_indev_extralibs="-lossaudio"
5325         oss_outdev_extralibs="-lossaudio"
5326         ;;
5327     dragonfly)
5328         disable symver
5329         ;;
5330     freebsd)
5331         ;;
5332     bsd/os)
5333         add_extralibs -lpoll -lgnugetopt
5334         strip="strip -d"
5335         ;;
5336     darwin)
5337         enabled ppc && add_asflags -force_cpusubtype_ALL
5338         install_name_dir_default='$(SHLIBDIR)'
5339         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5340         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5341         strip="${strip} -x"
5342         add_ldflags -Wl,-dynamic,-search_paths_first
5343         check_cflags -Werror=partial-availability
5344         SLIBSUF=".dylib"
5345         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5346         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5347         enabled x86_64 && objformat="macho64" || objformat="macho32"
5348         enabled_any pic shared x86_64 ||
5349             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5350         check_headers dispatch/dispatch.h &&
5351             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5352         if test -n "$sysroot"; then
5353             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5354             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5355         fi
5356         version_script='-exported_symbols_list'
5357         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5358         ;;
5359     msys*)
5360         die "Native MSYS builds are discouraged, please use the MINGW environment."
5361         ;;
5362     mingw32*|mingw64*)
5363         target_os=mingw32
5364         LIBTARGET=i386
5365         if enabled x86_64; then
5366             LIBTARGET="i386:x86-64"
5367         elif enabled arm; then
5368             LIBTARGET="arm"
5369         elif enabled aarch64; then
5370             LIBTARGET="arm64"
5371         fi
5372         if enabled shared; then
5373             # Cannot build both shared and static libs when using dllimport.
5374             disable static
5375         fi
5376         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5377         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5378         shlibdir_default="$bindir_default"
5379         SLIBPREF=""
5380         SLIBSUF=".dll"
5381         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5382         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5383         if test_cmd lib.exe -list; then
5384             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5385             if enabled x86_64; then
5386                 LIBTARGET=x64
5387             fi
5388         else
5389             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5390         fi
5391         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5392         SLIB_INSTALL_LINKS=
5393         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5394         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5395         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5396         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5397         enabled x86_64 && objformat="win64" || objformat="win32"
5398         dlltool="${cross_prefix}dlltool"
5399         ranlib=:
5400         enable dos_paths
5401         check_ldflags -Wl,--nxcompat,--dynamicbase
5402         # Lets work around some stupidity in binutils.
5403         # ld will strip relocations from executables even though we need them
5404         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5405         # however ld then forgets what the entry point should be (oops) so we
5406         # have to manually (re)set it.
5407         if enabled x86_32; then
5408             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5409         elif enabled x86_64; then
5410             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5411             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5412             # Set image base >4GB for extra entropy with HEASLR
5413             add_ldexeflags -Wl,--image-base,0x140000000
5414             append SHFLAGS -Wl,--image-base,0x180000000
5415         fi
5416         ;;
5417     win32|win64)
5418         disable symver
5419         if enabled shared; then
5420             # Link to the import library instead of the normal static library
5421             # for shared libs.
5422             LD_LIB='%.lib'
5423             # Cannot build both shared and static libs with MSVC or icl.
5424             disable static
5425         fi
5426         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5427         shlibdir_default="$bindir_default"
5428         SLIBPREF=""
5429         SLIBSUF=".dll"
5430         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5431         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5432         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5433         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5434         SLIB_INSTALL_LINKS=
5435         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5436         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5437         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5438         enabled x86_64 && objformat="win64" || objformat="win32"
5439         ranlib=:
5440         enable dos_paths
5441         ;;
5442     cygwin*)
5443         target_os=cygwin
5444         shlibdir_default="$bindir_default"
5445         SLIBPREF="cyg"
5446         SLIBSUF=".dll"
5447         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5448         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5449         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5450         SLIB_INSTALL_LINKS=
5451         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5452         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5453         enabled x86_64 && objformat="win64" || objformat="win32"
5454         enable dos_paths
5455         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5456         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5457         ;;
5458     *-dos|freedos|opendos)
5459         network_extralibs="-lsocket"
5460         objformat="coff"
5461         enable dos_paths
5462         ;;
5463     linux)
5464         enable section_data_rel_ro
5465         enabled_any arm aarch64 && enable_weak linux_perf
5466         ;;
5467     irix*)
5468         target_os=irix
5469         ranlib="echo ignoring ranlib"
5470         ;;
5471     os/2*)
5472         strip="lxlite -CS"
5473         striptype=""
5474         objformat="aout"
5475         add_cppflags -D_GNU_SOURCE
5476         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5477         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5478         LIBSUF="_s.a"
5479         SLIBPREF=""
5480         SLIBSUF=".dll"
5481         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5482         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5483         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5484             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5485             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5486             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5487             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5488         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5489             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5490         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5491         SLIB_INSTALL_LINKS=
5492         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5493         enable dos_paths
5494         enable_weak os2threads
5495         ;;
5496     gnu/kfreebsd)
5497         add_cppflags -D_BSD_SOURCE
5498         ;;
5499     gnu)
5500         ;;
5501     qnx)
5502         add_cppflags -D_QNX_SOURCE
5503         network_extralibs="-lsocket"
5504         ;;
5505     symbian)
5506         SLIBSUF=".dll"
5507         enable dos_paths
5508         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5509         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5510         add_ldflags -Wl,--target1-abs,--no-undefined \
5511                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5512                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5513         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5514                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5515                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5516         ;;
5517     minix)
5518         ;;
5519     none)
5520         ;;
5521     *)
5522         die "Unknown OS '$target_os'."
5523         ;;
5524 esac
5525
5526 # test if creating links works
5527 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5528 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5529 mkdir "$link_dest"
5530 $ln_s "$link_dest" "$link_name"
5531 touch "$link_dest/test_file"
5532 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5533     # create link to source path
5534     [ -e src ] && rm src
5535     $ln_s "$source_path" src
5536     source_link=src
5537 else
5538     # creating directory links doesn't work
5539     # fall back to using the full source path
5540     source_link="$source_path"
5541 fi
5542 # cleanup
5543 rm -r "$link_dest"
5544 rm -r "$link_name"
5545
5546 # determine libc flavour
5547
5548 probe_libc(){
5549     pfx=$1
5550     pfx_no_=${pfx%_}
5551     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5552     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5553         eval ${pfx}libc_type=uclibc
5554         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5555     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5556         eval ${pfx}libc_type=glibc
5557         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5558     # MinGW headers can be installed on Cygwin, so check for newlib first.
5559     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5560         eval ${pfx}libc_type=newlib
5561         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5562     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5563     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5564         eval ${pfx}libc_type=mingw64
5565         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5566             add_compat msvcrt/snprintf.o
5567             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5568         fi
5569         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5570         eval test \$${pfx_no_}cc_type = "gcc" &&
5571             add_${pfx}cppflags -D__printf__=__gnu_printf__
5572         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5573             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5574         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5575     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5576          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5577         eval ${pfx}libc_type=mingw32
5578         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5579             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5580             die "ERROR: MinGW32 runtime version must be >= 3.15."
5581         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5582         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5583             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5584         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5585             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5586         eval test \$${pfx_no_}cc_type = "gcc" &&
5587             add_${pfx}cppflags -D__printf__=__gnu_printf__
5588         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5589     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5590         eval ${pfx}libc_type=msvcrt
5591         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5592             if [ "$pfx" = host_ ]; then
5593                 add_host_cppflags -Dsnprintf=_snprintf
5594             else
5595                 add_compat strtod.o strtod=avpriv_strtod
5596                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5597                                              _snprintf=avpriv_snprintf  \
5598                                              vsnprintf=avpriv_vsnprintf
5599             fi
5600         fi
5601         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5602         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5603         # 0x601 by default unless something else is set by the user.
5604         # This can easily lead to us detecting functions only present
5605         # in such new versions and producing binaries requiring windows 7.0.
5606         # Therefore explicitly set the default to Vista unless the user has
5607         # set something else on the command line.
5608         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5609         # family. For these cases, configure is free to use any functions
5610         # found in the SDK headers by default. (Alternatively, we could force
5611         # _WIN32_WINNT to 0x0602 in that case.)
5612         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5613             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5614 #ifdef WINAPI_FAMILY
5615 #include <winapifamily.h>
5616 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5617 #error not desktop
5618 #endif
5619 #endif
5620 EOF
5621         if [ "$pfx" = "" ]; then
5622             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5623             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5624         fi
5625     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5626         eval ${pfx}libc_type=klibc
5627     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5628         eval ${pfx}libc_type=bionic
5629     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5630         eval ${pfx}libc_type=solaris
5631         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5632     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5633         eval ${pfx}libc_type=djgpp
5634         add_cppflags -U__STRICT_ANSI__
5635         add_cflags "-include $source_path/compat/djgpp/math.h"
5636         add_compat djgpp/math.o
5637     fi
5638     test_${pfx}cc <<EOF
5639 #include <time.h>
5640 void *v = localtime_r;
5641 EOF
5642 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5643 #include <time.h>
5644 void *v = localtime_r;
5645 EOF
5646
5647     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5648 }
5649
5650 probe_libc
5651 probe_libc host_
5652
5653 # hacks for compiler/libc/os combinations
5654
5655 case $libc_type in
5656     bionic)
5657         add_compat strtod.o strtod=avpriv_strtod
5658         ;;
5659 esac
5660
5661 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5662     add_cppflags '-I\$(SRC_PATH)/compat/float'
5663
5664 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5665
5666 set_default libdir
5667 : ${shlibdir_default:="$libdir"}
5668 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5669
5670 set_default $PATHS_LIST
5671 set_default nm
5672
5673 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5674
5675 enable_weak_pic() {
5676     disabled pic && return
5677     enable pic
5678     add_cppflags -DPIC
5679     case "$target_os" in
5680     mingw*|cygwin*|win*)
5681         ;;
5682     *)
5683         add_cflags -fPIC
5684         add_asflags -fPIC
5685         ;;
5686     esac
5687 }
5688
5689 enabled pic && enable_weak_pic
5690
5691 test_cc <<EOF || die "Symbol mangling check failed."
5692 int ff_extern;
5693 EOF
5694 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5695 extern_prefix=${sym%%ff_extern*}
5696
5697 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5698
5699 for restrict_keyword in restrict __restrict__ __restrict ""; do
5700     test_code cc "" "char * $restrict_keyword p" && break
5701 done
5702
5703 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5704
5705 # The global variable ensures the bits appear unchanged in the object file.
5706 test_cc <<EOF || die "endian test failed"
5707 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5708 EOF
5709 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5710
5711 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5712
5713 if ! enabled ppc64 || enabled bigendian; then
5714     disable vsx
5715 fi
5716
5717 check_gas() {
5718     log "check_gas using '$as' as AS"
5719     # :vararg is used on aarch64, arm and ppc altivec
5720     check_as vararg "
5721 .macro m n, y:vararg=0
5722 \n: .int \y
5723 .endm
5724 m x" || return 1
5725     # .altmacro is only used in arm asm
5726     ! enabled arm || check_as gnu_as ".altmacro"
5727 }
5728
5729 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5730     nogas=:
5731     enabled_any arm aarch64 && nogas=die
5732     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5733     as_noop=-v
5734
5735     case $as_type in
5736         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5737         gcc)  gaspp_as_type=gas ;;
5738         *)    gaspp_as_type=$as_type ;;
5739     esac
5740
5741     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5742
5743     test "${as#*gas-preprocessor.pl}" != "$as" ||
5744     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5745         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5746
5747     if ! check_gas ; then
5748         as=${gas:=$as}
5749         check_gas || \
5750             $nogas "GNU assembler not found, install/update gas-preprocessor"
5751     fi
5752
5753     check_as as_func ".func test
5754                       .endfunc"
5755 fi
5756
5757 check_inline_asm inline_asm_labels '"1:\n"'
5758
5759 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5760
5761 if enabled aarch64; then
5762     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5763     # internal assembler in clang 3.3 does not support this instruction
5764     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5765     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5766
5767     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5768
5769 elif enabled alpha; then
5770
5771     check_cflags -mieee
5772
5773 elif enabled arm; then
5774
5775     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5776     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5777 float func(float a, float b){ return a+b; }
5778 EOF
5779     enabled thumb && check_cflags -mthumb || check_cflags -marm
5780
5781     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5782         :
5783     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5784         :
5785     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5786         case "${cross_prefix:-$cc}" in
5787             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5788             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5789 __asm__ (".eabi_attribute 28, 1");
5790 int main(void) { return 0; }
5791 EOF
5792         esac
5793         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5794     fi
5795
5796     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5797     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5798     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5799     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5800     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5801     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5802     enabled setend  && check_insn setend  'setend be'
5803
5804     [ $target_os = linux ] || [ $target_os = android ] ||
5805         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5806             $ARCH_EXT_LIST_ARM
5807
5808     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5809
5810     check_as as_arch_directive ".arch armv7-a"
5811     check_as as_dn_directive   "ra .dn d0.i16"
5812     check_as as_fpu_directive  ".fpu neon"
5813
5814     # llvm's integrated assembler supports .object_arch from llvm 3.5
5815     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5816         check_as as_object_arch ".object_arch armv4"
5817
5818     # MS armasm fails to assemble our PIC constructs
5819     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5820
5821 elif enabled mips; then
5822
5823     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5824     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5825     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5826
5827     # Enable minimum ISA based on selected options
5828     if enabled mips64; then
5829         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5830         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5831         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5832     else
5833         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5834         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5835         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5836         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5837     fi
5838
5839     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5840     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5841     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5842     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5843     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5844     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5845
5846     if enabled bigendian && enabled msa; then
5847         disable msa
5848     fi
5849
5850 elif enabled parisc; then
5851
5852     if enabled gcc; then
5853         case $($cc -dumpversion) in
5854             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5855         esac
5856     fi
5857
5858 elif enabled ppc; then
5859
5860     enable local_aligned
5861
5862     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5863     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5864     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5865     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5866
5867     if enabled altivec; then
5868         check_cflags -maltivec -mabi=altivec
5869
5870         # check if our compiler supports Motorola AltiVec C API
5871         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5872                                     vector signed int v2 = (vector signed int) { 1 };
5873                                     v1 = vec_add(v1, v2);"
5874
5875         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5876     fi
5877
5878     if enabled vsx; then
5879         check_cflags -mvsx &&
5880         check_cc vsx altivec.h "int v[4] = { 0 };
5881                                 vector signed int v1 = vec_vsx_ld(0, v);"
5882     fi
5883
5884     if enabled power8; then
5885         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5886     fi
5887
5888 elif enabled x86; then
5889
5890     check_builtin rdtsc    intrin.h   "__rdtsc()"
5891     check_builtin mm_empty mmintrin.h "_mm_empty()"
5892
5893     enable local_aligned
5894
5895     # check whether EBP is available on x86
5896     # As 'i' is stored on the stack, this program will crash
5897     # if the base pointer is used to access it because the
5898     # base pointer is cleared in the inline assembly code.
5899     check_exec_crash <<EOF && enable ebp_available
5900 volatile int i=0;
5901 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5902 return i;
5903 EOF
5904
5905     # check whether EBX is available on x86
5906     check_inline_asm ebx_available '""::"b"(0)' &&
5907         check_inline_asm ebx_available '"":::"%ebx"'
5908
5909     # check whether xmm clobbers are supported
5910     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5911
5912     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5913         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5914
5915     # check whether binutils is new enough to compile SSSE3/MMXEXT
5916     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5917     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5918
5919     probe_x86asm(){
5920         x86asmexe_probe=$1
5921         if test_cmd $x86asmexe_probe -v; then
5922             x86asmexe=$x86asmexe_probe
5923             x86asm_type=nasm
5924             x86asm_debug="-g -F dwarf"
5925             X86ASMDEP=
5926             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5927         elif test_cmd $x86asmexe_probe --version; then
5928             x86asmexe=$x86asmexe_probe
5929             x86asm_type=yasm
5930             x86asm_debug="-g dwarf2"
5931             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5932             X86ASM_DEPFLAGS=
5933         fi
5934         check_x86asm x86asm "movbe ecx, [5]"
5935     }
5936
5937     if ! disabled_any asm mmx x86asm; then
5938         disable x86asm
5939         for program in $x86asmexe nasm yasm; do
5940             probe_x86asm $program && break
5941         done
5942         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5943         X86ASMFLAGS="-f $objformat"
5944         enabled pic               && append X86ASMFLAGS "-DPIC"
5945         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5946         case "$objformat" in
5947             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5948         esac
5949
5950         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5951         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5952         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5953         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5954         check_x86asm cpunop          "CPU amdnop"
5955     fi
5956
5957     case "$cpu" in
5958         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5959             disable fast_clz
5960         ;;
5961     esac
5962
5963 fi
5964
5965 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5966
5967 check_ldflags -Wl,--as-needed
5968 check_ldflags -Wl,-z,noexecstack
5969
5970 if ! disabled network; then
5971     check_func getaddrinfo $network_extralibs
5972     check_func inet_aton $network_extralibs
5973
5974     check_type netdb.h "struct addrinfo"
5975     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5976     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5977     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5978     check_type poll.h "struct pollfd"
5979     check_type netinet/sctp.h "struct sctp_event_subscribe"
5980     check_struct "sys/socket.h" "struct msghdr" msg_flags
5981     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5982     check_type netinet/in.h "struct sockaddr_in6"
5983     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5984     check_type "sys/types.h sys/socket.h" socklen_t
5985
5986     # Prefer arpa/inet.h over winsock2
5987     if check_headers arpa/inet.h ; then
5988         check_func closesocket
5989     elif check_headers winsock2.h ; then
5990         check_func_headers winsock2.h closesocket -lws2 &&
5991             network_extralibs="-lws2" ||
5992         { check_func_headers winsock2.h closesocket -lws2_32 &&
5993             network_extralibs="-lws2_32"; } || disable winsock2_h network
5994         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5995
5996         check_type ws2tcpip.h socklen_t
5997         check_type ws2tcpip.h "struct addrinfo"
5998         check_type ws2tcpip.h "struct group_source_req"
5999         check_type ws2tcpip.h "struct ip_mreq_source"
6000         check_type ws2tcpip.h "struct ipv6_mreq"
6001         check_type winsock2.h "struct pollfd"
6002         check_struct winsock2.h "struct sockaddr" sa_len
6003         check_type ws2tcpip.h "struct sockaddr_in6"
6004         check_type ws2tcpip.h "struct sockaddr_storage"
6005     else
6006         disable network
6007     fi
6008 fi
6009
6010 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6011 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6012 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6013 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6014 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6015 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6016 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6017
6018 case "$custom_allocator" in
6019     jemalloc)
6020         # jemalloc by default does not use a prefix
6021         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6022     ;;
6023     tcmalloc)
6024         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6025         malloc_prefix=tc_
6026     ;;
6027 esac
6028
6029 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6030 check_func  ${malloc_prefix}memalign            && enable memalign
6031 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6032
6033 check_func  access
6034 check_func_headers stdlib.h arc4random
6035 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6036 check_func  fcntl
6037 check_func  fork
6038 check_func  gethrtime
6039 check_func  getopt
6040 check_func  getrusage
6041 check_func  gettimeofday
6042 check_func  isatty
6043 check_func  mkstemp
6044 check_func  mmap
6045 check_func  mprotect
6046 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6047 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6048 check_func  sched_getaffinity
6049 check_func  setrlimit
6050 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6051 check_func  strerror_r
6052 check_func  sysconf
6053 check_func  sysctl
6054 check_func  usleep
6055
6056 check_func_headers conio.h kbhit
6057 check_func_headers io.h setmode
6058 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6059 check_func_headers mach/mach_time.h mach_absolute_time
6060 check_func_headers stdlib.h getenv
6061 check_func_headers sys/stat.h lstat
6062
6063 check_func_headers windows.h GetModuleHandle
6064 check_func_headers windows.h GetProcessAffinityMask
6065 check_func_headers windows.h GetProcessTimes
6066 check_func_headers windows.h GetStdHandle
6067 check_func_headers windows.h GetSystemTimeAsFileTime
6068 check_func_headers windows.h LoadLibrary
6069 check_func_headers windows.h MapViewOfFile
6070 check_func_headers windows.h PeekNamedPipe
6071 check_func_headers windows.h SetConsoleTextAttribute
6072 check_func_headers windows.h SetConsoleCtrlHandler
6073 check_func_headers windows.h SetDllDirectory
6074 check_func_headers windows.h Sleep
6075 check_func_headers windows.h VirtualAlloc
6076 check_func_headers glob.h glob
6077 enabled xlib &&
6078     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6079
6080 check_headers direct.h
6081 check_headers dirent.h
6082 check_headers dxgidebug.h
6083 check_headers dxva.h
6084 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6085 check_headers io.h
6086 check_headers linux/perf_event.h
6087 check_headers libcrystalhd/libcrystalhd_if.h
6088 check_headers malloc.h
6089 check_headers net/udplite.h
6090 check_headers poll.h
6091 check_headers sys/param.h
6092 check_headers sys/resource.h
6093 check_headers sys/select.h
6094 check_headers sys/time.h
6095 check_headers sys/un.h
6096 check_headers termios.h
6097 check_headers unistd.h
6098 check_headers valgrind/valgrind.h
6099 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6100 check_headers windows.h
6101 check_headers X11/extensions/XvMClib.h
6102 check_headers asm/types.h
6103
6104 # it seems there are versions of clang in some distros that try to use the
6105 # gcc headers, which explodes for stdatomic
6106 # so we also check that atomics actually work here
6107 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6108
6109 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6110 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6111     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6112 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6113 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6114 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6115
6116 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6117 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6118 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6119
6120 enabled appkit       && check_apple_framework AppKit
6121 enabled audiotoolbox && check_apple_framework AudioToolbox
6122 enabled avfoundation && check_apple_framework AVFoundation
6123 enabled coreimage    && check_apple_framework CoreImage
6124 enabled videotoolbox && check_apple_framework VideoToolbox
6125
6126 check_apple_framework CoreFoundation
6127 check_apple_framework CoreMedia
6128 check_apple_framework CoreVideo
6129
6130 enabled avfoundation && {
6131     disable coregraphics applicationservices
6132     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6133     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6134
6135 enabled videotoolbox && {
6136     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6137     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6138     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6139     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6140     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6141     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6142 }
6143
6144 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6145
6146 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6147 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6148 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6149 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6150 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6151
6152 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6153 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6154
6155 if [ -z "$nvccflags" ]; then
6156     nvccflags=$nvccflags_default
6157 fi
6158
6159 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6160     nvccflags="$nvccflags -m64"
6161 else
6162     nvccflags="$nvccflags -m32"
6163 fi
6164
6165 if enabled cuda_nvcc; then
6166     nvccflags="$nvccflags -ptx"
6167 else
6168     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6169     check_nvcc cuda_llvm
6170 fi
6171
6172 if ! disabled ffnvcodec; then
6173     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6174     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6175       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6176       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6177       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6178 fi
6179
6180 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6181
6182 if ! disabled w32threads && ! enabled pthreads; then
6183     check_func_headers "windows.h process.h" _beginthreadex &&
6184         check_type "windows.h" CONDITION_VARIABLE &&
6185         check_type "windows.h" INIT_ONCE &&
6186         enable w32threads || disable w32threads
6187     if ! enabled w32threads && enabled winrt; then
6188         check_func_headers "windows.h" CreateThread &&
6189             enable w32threads || disable w32threads
6190     fi
6191 fi
6192
6193 # check for some common methods of building with pthread support
6194 # do this before the optional library checks as some of them require pthreads
6195 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6196     if check_lib pthreads pthread.h pthread_join   -pthread &&
6197        check_lib pthreads pthread.h pthread_create -pthread; then
6198         add_cflags -pthread
6199     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6200          check_lib pthreads pthread.h pthread_create -pthreads; then
6201         add_cflags -pthreads
6202     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6203          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6204         add_cflags -ldl -pthread
6205     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6206          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6207         :
6208     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6209          check_lib pthreads pthread.h pthread_create -lpthread; then
6210         :
6211     elif check_func pthread_join && check_func pthread_create; then
6212         enable pthreads
6213     fi
6214     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6215
6216     if enabled pthreads; then
6217         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6218         check_func pthread_cancel $pthreads_extralibs
6219     fi
6220 fi
6221
6222 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6223                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6224 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6225 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6226
6227 # On some systems dynamic loading requires no extra linker flags
6228 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6229
6230 check_lib libm math.h sin -lm
6231
6232 atan2f_args=2
6233 copysign_args=2
6234 hypot_args=2
6235 ldexpf_args=2
6236 powf_args=2
6237
6238 for func in $MATH_FUNCS; do
6239     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6240 done
6241
6242 for func in $COMPLEX_FUNCS; do
6243     eval check_complexfunc $func \${${func}_args:-1}
6244 done
6245
6246 # these are off by default, so fail if requested and not available
6247 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6248 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6249 enabled decklink          && { require_headers DeckLinkAPI.h &&
6250                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6251 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6252 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6253 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6254 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6255 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6256 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6257 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6258                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6259                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6260 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6261 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6262 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6263 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6264 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6265 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6266                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6267                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6268 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6269 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6270 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6271 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6272 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6273 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6274 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6275                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6276                                  warn "using libfdk without pkg-config"; } }
6277 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"
6278 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6279 enabled fontconfig        && enable libfontconfig
6280 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6281 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6282 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6283 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6284 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6285                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6286 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6287                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6288                                done || die "ERROR: libgsm not found"; }
6289 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6290 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6291 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6292 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6293 # While it may appear that require is being used as a pkg-config
6294 # fallback for libmfx, it is actually being used to detect a different
6295 # installation route altogether.  If libmfx is installed via the Intel
6296 # Media SDK or Intel Media Server Studio, these don't come with
6297 # pkg-config support.  Instead, users should make sure that the build
6298 # can find the libraries and headers through other means.
6299 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6300                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6301 if enabled libmfx; then
6302    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6303 fi
6304
6305 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6306 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6307 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6308                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6309 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6310                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6311                                die "ERROR: libnpp not found"; }
6312 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6313 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6314 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6315                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6316                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6317                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6318 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6319 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6320                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6321 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6322 enabled libopus           && {
6323     enabled libopus_decoder && {
6324         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6325     }
6326     enabled libopus_encoder && {
6327         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6328     }
6329 }
6330 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6331 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6332 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6333 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6334 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6335 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6336 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6337 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6338                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6339 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6340 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6341 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6342 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6343 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6344 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6345 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6346 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6347 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6348 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6349                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6350                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6351 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6352 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6353 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6354 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6355 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6356                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6357
6358 enabled libvpx            && {
6359     enabled libvpx_vp8_decoder && {
6360         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6361             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"
6362     }
6363     enabled libvpx_vp8_encoder && {
6364         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6365             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"
6366     }
6367     enabled libvpx_vp9_decoder && {
6368         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6369             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"
6370     }
6371     enabled libvpx_vp9_encoder && {
6372         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6373             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"
6374     }
6375     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6376         die "libvpx enabled but no supported decoders found"
6377     fi
6378 }
6379
6380 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6381 enabled libwebp           && {
6382     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6383     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6384 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6385                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6386                                  warn "using libx264 without pkg-config"; } } &&
6387                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6388                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6389 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6390                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6391 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6392 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6393 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6394 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6395 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6396 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6397                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6398                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6399 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6400 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6401                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6402                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6403                                die "ERROR: mbedTLS not found"; }
6404 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6405 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6406                                { ! enabled cross_compile &&
6407                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6408                                  add_ldflags -L/opt/vc/lib/ &&
6409                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6410                                die "ERROR: mmal not found" &&
6411                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6412 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6413                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6414                                die "ERROR: openal not found"; } &&
6415                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6416                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6417 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6418                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6419                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6420                                die "ERROR: opencl not found"; } &&
6421                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6422                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6423                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6424 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6425                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6426                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6427                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6428                                die "ERROR: opengl not found."
6429                              }
6430 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6431                                { ! enabled cross_compile &&
6432                                  add_cflags -isystem/opt/vc/include/IL &&
6433                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6434                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6435                              enable omx
6436 enabled omx               && require_headers OMX_Core.h
6437 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6438                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6439                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6440                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6441                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6442                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6443                                die "ERROR: openssl not found"; }
6444 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6445 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6446                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6447                                { enabled libdrm ||
6448                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6449                              }
6450 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6451
6452
6453 if enabled gcrypt; then
6454     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6455     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6456         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6457         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6458         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6459             die "ERROR: gcrypt not found"
6460         add_cflags $gcrypt_cflags
6461     else
6462         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6463     fi
6464 fi
6465
6466 if enabled sdl2; then
6467     SDL2_CONFIG="${cross_prefix}sdl2-config"
6468     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6469     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6470         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6471         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6472         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6473         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6474         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6475             enable sdl2
6476     fi
6477     if test $target_os = "mingw32"; then
6478         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6479     fi
6480 fi
6481
6482 if enabled decklink; then
6483     case $target_os in
6484         mingw32*|mingw64*|win32|win64)
6485             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6486             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6487             ;;
6488     esac
6489 fi
6490
6491 enabled securetransport &&
6492     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6493     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6494         disable securetransport
6495
6496 enabled securetransport &&
6497     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6498
6499 enabled schannel &&
6500     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6501     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6502     schannel_extralibs="-lsecur32" ||
6503         disable schannel
6504
6505 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6506 enabled makeinfo \
6507     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6508     && enable makeinfo_html || disable makeinfo_html
6509 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6510 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6511 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6512 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6513
6514 # check V4L2 codecs available in the API
6515 if enabled v4l2_m2m; then
6516     check_headers linux/fb.h
6517     check_headers linux/videodev2.h
6518     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6519     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6520     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6521     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6522     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6523     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6524     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6525     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6526     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6527     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6528     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6529 fi
6530
6531 check_headers sys/videoio.h
6532 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6533
6534 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6535 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6536 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6537 # w32api 3.12 had it defined wrong
6538 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6539
6540 check_type "dshow.h" IBaseFilter
6541
6542 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6543 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6544     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6545     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6546     check_headers "dev/ic/bt8xx.h"
6547
6548 if check_struct sys/soundcard.h audio_buf_info bytes; then
6549     enable_sanitized sys/soundcard.h
6550 else
6551     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6552     #include <sys/soundcard.h>
6553     audio_buf_info abc;
6554 EOF
6555 fi
6556
6557 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6558                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6559
6560 enabled libjack &&
6561     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6562
6563 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6564
6565 if enabled libcdio; then
6566     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6567     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6568     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6569     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6570     die "ERROR: No usable libcdio/cdparanoia found"
6571 fi
6572
6573 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6574     disable libxcb_shm libxcb_shape libxcb_xfixes
6575
6576 if enabled libxcb; then
6577     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6578     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6579     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6580 fi
6581
6582 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6583
6584 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6585 # the desktop api partition
6586 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6587 #ifdef WINAPI_FAMILY
6588 #include <winapifamily.h>
6589 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6590 #error desktop, not uwp
6591 #else
6592 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6593 #endif
6594 #else
6595 #error no family set
6596 #endif
6597 EOF
6598
6599 enabled vaapi &&
6600     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6601
6602 if enabled vaapi; then
6603     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6604
6605     if enabled xlib; then
6606         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6607     fi
6608
6609     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6610
6611     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6612     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6613     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6614     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6615     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6616     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6617     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6618     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6619 fi
6620
6621 if enabled_all opencl libdrm ; then
6622     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6623         enable opencl_drm_beignet
6624     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6625         enable opencl_drm_arm
6626 fi
6627
6628 if enabled_all opencl vaapi ; then
6629     if enabled opencl_drm_beignet ; then
6630         enable opencl_vaapi_beignet
6631     else
6632         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6633             enable opencl_vaapi_intel_media
6634     fi
6635 fi
6636
6637 if enabled_all opencl dxva2 ; then
6638     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6639         enable opencl_dxva2
6640 fi
6641
6642 if enabled_all opencl d3d11va ; then
6643     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6644         enable opencl_d3d11
6645 fi
6646
6647 enabled vdpau &&
6648     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6649
6650 enabled vdpau &&
6651     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6652
6653 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6654
6655 enabled vulkan &&
6656     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6657
6658 if enabled x86; then
6659     case $target_os in
6660         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6661             ;;
6662         *)
6663             disable ffnvcodec cuvid nvdec nvenc
6664             ;;
6665     esac
6666 elif enabled ppc64 && ! enabled bigendian; then
6667     case $target_os in
6668         linux)
6669             ;;
6670         *)
6671             disable ffnvcodec cuvid nvdec nvenc
6672             ;;
6673     esac
6674 else
6675     disable ffnvcodec cuvid nvdec nvenc
6676 fi
6677
6678 enabled ffnvcodec && enable cuda
6679
6680 enabled nvenc &&
6681     test_cc -I$source_path <<EOF || disable nvenc
6682 #include <ffnvcodec/nvEncodeAPI.h>
6683 NV_ENCODE_API_FUNCTION_LIST flist;
6684 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6685 int main(void) { return 0; }
6686 EOF
6687
6688 enabled amf &&
6689     check_cpp_condition amf "AMF/core/Version.h" \
6690         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6691
6692 # Funny iconv installations are not unusual, so check it after all flags have been set
6693 if enabled libc_iconv; then
6694     check_func_headers iconv.h iconv
6695 elif enabled iconv; then
6696     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6697 fi
6698
6699 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6700
6701 # add some useful compiler flags if supported
6702 check_cflags -Wdeclaration-after-statement
6703 check_cflags -Wall
6704 check_cflags -Wdisabled-optimization
6705 check_cflags -Wpointer-arith
6706 check_cflags -Wredundant-decls
6707 check_cflags -Wwrite-strings
6708 check_cflags -Wtype-limits
6709 check_cflags -Wundef
6710 check_cflags -Wmissing-prototypes
6711 check_cflags -Wno-pointer-to-int-cast
6712 check_cflags -Wstrict-prototypes
6713 check_cflags -Wempty-body
6714
6715 if enabled extra_warnings; then
6716     check_cflags -Wcast-qual
6717     check_cflags -Wextra
6718     check_cflags -Wpedantic
6719 fi
6720
6721 check_disable_warning(){
6722     warning_flag=-W${1#-Wno-}
6723     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6724 }
6725
6726 test_cflags -Werror=unused-command-line-argument &&
6727     append unknown_warning_flags "-Werror=unused-command-line-argument"
6728 test_cflags -Werror=unknown-warning-option &&
6729     append unknown_warning_flags "-Werror=unknown-warning-option"
6730
6731 check_disable_warning -Wno-parentheses
6732 check_disable_warning -Wno-switch
6733 check_disable_warning -Wno-format-zero-length
6734 check_disable_warning -Wno-pointer-sign
6735 check_disable_warning -Wno-unused-const-variable
6736 check_disable_warning -Wno-bool-operation
6737 check_disable_warning -Wno-char-subscripts
6738
6739 check_disable_warning_headers(){
6740     warning_flag=-W${1#-Wno-}
6741     test_cflags $warning_flag && add_cflags_headers $1
6742 }
6743
6744 check_disable_warning_headers -Wno-deprecated-declarations
6745 check_disable_warning_headers -Wno-unused-variable
6746
6747 test_cc <<EOF && enable blocks_extension
6748 void (^block)(void);
6749 EOF
6750
6751 # add some linker flags
6752 check_ldflags -Wl,--warn-common
6753 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6754 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6755 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6756
6757 # add some strip flags
6758 check_stripflags -x
6759
6760 enabled neon_clobber_test &&
6761     check_ldflags -Wl,--wrap,avcodec_open2              \
6762                   -Wl,--wrap,avcodec_decode_audio4      \
6763                   -Wl,--wrap,avcodec_decode_video2      \
6764                   -Wl,--wrap,avcodec_decode_subtitle2   \
6765                   -Wl,--wrap,avcodec_encode_audio2      \
6766                   -Wl,--wrap,avcodec_encode_video2      \
6767                   -Wl,--wrap,avcodec_encode_subtitle    \
6768                   -Wl,--wrap,avcodec_send_packet        \
6769                   -Wl,--wrap,avcodec_receive_packet     \
6770                   -Wl,--wrap,avcodec_send_frame         \
6771                   -Wl,--wrap,avcodec_receive_frame      \
6772                   -Wl,--wrap,swr_convert                \
6773                   -Wl,--wrap,avresample_convert ||
6774     disable neon_clobber_test
6775
6776 enabled xmm_clobber_test &&
6777     check_ldflags -Wl,--wrap,avcodec_open2              \
6778                   -Wl,--wrap,avcodec_decode_audio4      \
6779                   -Wl,--wrap,avcodec_decode_video2      \
6780                   -Wl,--wrap,avcodec_decode_subtitle2   \
6781                   -Wl,--wrap,avcodec_encode_audio2      \
6782                   -Wl,--wrap,avcodec_encode_video2      \
6783                   -Wl,--wrap,avcodec_encode_subtitle    \
6784                   -Wl,--wrap,avcodec_send_packet        \
6785                   -Wl,--wrap,avcodec_receive_packet     \
6786                   -Wl,--wrap,avcodec_send_frame         \
6787                   -Wl,--wrap,avcodec_receive_frame      \
6788                   -Wl,--wrap,swr_convert                \
6789                   -Wl,--wrap,avresample_convert         \
6790                   -Wl,--wrap,sws_scale ||
6791     disable xmm_clobber_test
6792
6793 check_ld "cc" proper_dce <<EOF
6794 extern const int array[512];
6795 static inline int func(void) { return array[0]; }
6796 int main(void) { return 0; }
6797 EOF
6798
6799 if enabled proper_dce; then
6800     echo "X { local: *; };" > $TMPV
6801     if test_ldflags -Wl,${version_script},$TMPV; then
6802         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6803         quotes='""'
6804         test_cc <<EOF && enable symver_asm_label
6805 void ff_foo(void) __asm__ ("av_foo@VERSION");
6806 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6807 EOF
6808         test_cc <<EOF && enable symver_gnu_asm
6809 __asm__(".symver ff_foo,av_foo@VERSION");
6810 void ff_foo(void) {}
6811 EOF
6812     fi
6813 fi
6814
6815 if [ -z "$optflags" ]; then
6816     if enabled small; then
6817         optflags=$cflags_size
6818     elif enabled optimizations; then
6819         optflags=$cflags_speed
6820     else
6821         optflags=$cflags_noopt
6822     fi
6823 fi
6824
6825 check_optflags(){
6826     check_cflags "$@"
6827     enabled lto && check_ldflags "$@"
6828 }
6829
6830 check_optflags $optflags
6831 check_optflags -fno-math-errno
6832 check_optflags -fno-signed-zeros
6833
6834 if enabled lto; then
6835     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6836     check_cflags  -flto
6837     check_ldflags -flto $cpuflags
6838     disable inline_asm_direct_symbol_refs
6839 fi
6840
6841 enabled ftrapv && check_cflags -ftrapv
6842
6843 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6844 int x;
6845 EOF
6846
6847
6848 if enabled icc; then
6849     # Just warnings, no remarks
6850     check_cflags -w1
6851     # -wd: Disable following warnings
6852     # 144, 167, 556: -Wno-pointer-sign
6853     # 188: enumerated type mixed with another type
6854     # 1292: attribute "foo" ignored
6855     # 1419: external declaration in primary source file
6856     # 10006: ignoring unknown option -fno-signed-zeros
6857     # 10148: ignoring unknown option -Wno-parentheses
6858     # 10156: ignoring option '-W'; no argument required
6859     # 13200: No EMMS instruction before call to function
6860     # 13203: No EMMS instruction before return from function
6861     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6862     # 11030: Warning unknown option --as-needed
6863     # 10156: ignoring option '-export'; no argument required
6864     check_ldflags -wd10156,11030
6865     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6866     enable ebp_available
6867     # The test above does not test linking
6868     enabled lto && disable symver_asm_label
6869     if enabled x86_32; then
6870         icc_version=$($cc -dumpversion)
6871         test ${icc_version%%.*} -ge 11 &&
6872             check_cflags -falign-stack=maintain-16-byte ||
6873             disable aligned_stack
6874     fi
6875 elif enabled gcc; then
6876     check_optflags -fno-tree-vectorize
6877     check_cflags -Werror=format-security
6878     check_cflags -Werror=implicit-function-declaration
6879     check_cflags -Werror=missing-prototypes
6880     check_cflags -Werror=return-type
6881     check_cflags -Werror=vla
6882     check_cflags -Wformat
6883     check_cflags -fdiagnostics-color=auto
6884     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6885     if enabled x86_32; then
6886         case $target_os in
6887         *bsd*)
6888             # BSDs don't guarantee a 16 byte aligned stack, but we can
6889             # request GCC to try to maintain 16 byte alignment throughout
6890             # function calls. Library entry points that might call assembly
6891             # functions align the stack. (The parameter means 2^4 bytes.)
6892             check_cflags -mpreferred-stack-boundary=4
6893             ;;
6894         esac
6895     fi
6896 elif enabled llvm_gcc; then
6897     check_cflags -mllvm -stack-alignment=16
6898 elif enabled clang; then
6899     if enabled x86_32; then
6900         # Clang doesn't support maintaining alignment without assuming the
6901         # same alignment in every function. If 16 byte alignment would be
6902         # enabled, one would also have to either add attribute_align_arg on
6903         # every single entry point into the libraries or enable -mstackrealign
6904         # (doing stack realignment in every single function).
6905         case $target_os in
6906         mingw32|win32|*bsd*)
6907             disable aligned_stack
6908             ;;
6909         *)
6910             check_cflags -mllvm -stack-alignment=16
6911             check_cflags -mstack-alignment=16
6912             ;;
6913         esac
6914     else
6915         check_cflags -mllvm -stack-alignment=16
6916         check_cflags -mstack-alignment=16
6917     fi
6918     check_cflags -Qunused-arguments
6919     check_cflags -Werror=implicit-function-declaration
6920     check_cflags -Werror=missing-prototypes
6921     check_cflags -Werror=return-type
6922 elif enabled cparser; then
6923     add_cflags -Wno-missing-variable-declarations
6924     add_cflags -Wno-empty-statement
6925 elif enabled armcc; then
6926     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6927     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6928     # 2523: use of inline assembly is deprecated
6929     add_cflags -W${armcc_opt},--diag_suppress=2523
6930     add_cflags -W${armcc_opt},--diag_suppress=1207
6931     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6932     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6933     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6934     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6935 elif enabled pathscale; then
6936     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6937     disable inline_asm
6938 elif enabled_any msvc icl; then
6939     enabled x86_32 && disable aligned_stack
6940     enabled_all x86_32 debug && add_cflags -Oy-
6941     enabled debug && add_ldflags -debug
6942     enable pragma_deprecated
6943     if enabled icl; then
6944         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6945         # (correctly) on icl 13.x.
6946         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6947             add_cflags -Qansi-alias
6948         # Some inline asm is not compilable in debug
6949         if enabled debug; then
6950             disable ebp_available
6951             disable ebx_available
6952         fi
6953     fi
6954     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6955     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6956     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6957     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6958     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6959     # MSVC 2013 and newer can handle it fine.
6960     # If this declspec fails, force including stdlib.h before the restrict redefinition
6961     # happens in config.h.
6962     if [ $restrict_keyword != restrict ]; then
6963         test_cc <<EOF || add_cflags -FIstdlib.h
6964 __declspec($restrict_keyword) void *foo(int);
6965 EOF
6966     fi
6967     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6968     # Issue has been fixed in MSVC v19.00.24218.
6969     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6970         check_cflags -d2SSAOptimizer-
6971     # enable utf-8 source processing on VS2015 U2 and newer
6972     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6973         add_cflags -utf-8
6974 fi
6975
6976 for pfx in "" host_; do
6977     varname=${pfx%_}cc_type
6978     eval "type=\$$varname"
6979     if [ "$type" = "msvc" ]; then
6980         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6981 static inline int foo(int a) { return a; }
6982 EOF
6983     fi
6984 done
6985
6986 case $as_type in
6987     clang)
6988         add_asflags -Qunused-arguments
6989     ;;
6990 esac
6991
6992 case $ld_type in
6993     clang)
6994         check_ldflags -Qunused-arguments
6995     ;;
6996 esac
6997
6998 enable frame_thread_encoder
6999
7000 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7001
7002 check_deps $CONFIG_LIST       \
7003            $CONFIG_EXTRA      \
7004            $HAVE_LIST         \
7005            $ALL_COMPONENTS    \
7006
7007 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"
7008 enabled avresample && warn "Building with deprecated library libavresample"
7009
7010 case $target_os in
7011 haiku)
7012     disable memalign
7013     disable posix_memalign
7014     ;;
7015 *-dos|freedos|opendos)
7016     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7017         disable memalign
7018     fi
7019     ;;
7020 esac
7021
7022 flatten_extralibs(){
7023     nested_entries=
7024     list_name=$1
7025     eval list=\$${1}
7026     for entry in $list; do
7027         entry_copy=$entry
7028         resolve entry_copy
7029         flat_entries=
7030         for e in $entry_copy; do
7031             case $e in
7032                 *_extralibs) nested_entries="$nested_entries$e ";;
7033                           *) flat_entries="$flat_entries$e ";;
7034             esac
7035         done
7036         eval $entry="\$flat_entries"
7037     done
7038     append $list_name "$nested_entries"
7039
7040     resolve nested_entries
7041     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7042         flatten_extralibs $list_name
7043     fi
7044 }
7045
7046 flatten_extralibs_wrapper(){
7047     list_name=$1
7048     flatten_extralibs $list_name
7049     unique $list_name
7050     resolve $list_name
7051     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7052     eval printf \''%s'\' \""\$$list_name"\"
7053 }
7054
7055 for linkunit in $LIBRARY_LIST; do
7056     unset current_extralibs
7057     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7058     for comp in ${components}; do
7059         enabled $comp || continue
7060         comp_extralibs="${comp}_extralibs"
7061         append current_extralibs $comp_extralibs
7062     done
7063     eval prepend ${linkunit}_extralibs $current_extralibs
7064 done
7065
7066 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7067     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7068 done
7069
7070 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7071
7072 for thread in $THREADS_LIST; do
7073     if enabled $thread; then
7074         test -n "$thread_type" &&
7075             die "ERROR: Only one thread type must be selected." ||
7076             thread_type="$thread"
7077     fi
7078 done
7079
7080 if disabled stdatomic; then
7081     if enabled atomics_gcc; then
7082         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7083     elif enabled atomics_win32; then
7084         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7085     elif enabled atomics_suncc; then
7086         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7087     elif enabled pthreads; then
7088         add_compat atomics/pthread/stdatomic.o
7089         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7090     else
7091         enabled threads && die "Threading is enabled, but no atomics are available"
7092         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7093     fi
7094 fi
7095
7096 # Check if requested libraries were found.
7097 for lib in $AUTODETECT_LIBS; do
7098     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7099 done
7100
7101 enabled zlib && add_cppflags -DZLIB_CONST
7102
7103 # conditional library dependencies, in any order
7104 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7105 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7106 enabled afir_filter         && prepend avfilter_deps "avcodec"
7107 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7108 enabled aresample_filter    && prepend avfilter_deps "swresample"
7109 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7110 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7111 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7112 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7113 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7114 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7115 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7116 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7117 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7118 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7119 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7120 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7121 enabled pan_filter          && prepend avfilter_deps "swresample"
7122 enabled pp_filter           && prepend avfilter_deps "postproc"
7123 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7124 enabled resample_filter && prepend avfilter_deps "avresample"
7125 enabled sab_filter          && prepend avfilter_deps "swscale"
7126 enabled scale_filter    && prepend avfilter_deps "swscale"
7127 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7128 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7129 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7130 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7131 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7132 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7133 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7134 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7135 enabled spp_filter          && prepend avfilter_deps "avcodec"
7136 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7137 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7138 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7139 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7140
7141 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7142
7143 #FIXME
7144 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7145     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7146
7147 enabled opus_decoder    && prepend avcodec_deps "swresample"
7148
7149 # reorder the items at var $1 to align with the items order at var $2 .
7150 # die if an item at $1 is not at $2 .
7151 reorder_by(){
7152     eval rb_in=\$$1
7153     eval rb_ordered=\$$2
7154
7155     for rb in $rb_in; do
7156         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7157     done
7158
7159     rb_out=
7160     for rb in $rb_ordered; do
7161         is_in $rb $rb_in && rb_out="$rb_out$rb "
7162     done
7163     eval $1=\$rb_out
7164 }
7165
7166 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7167 # within a set of N items, N expansions are enough to expose a cycle.
7168 expand_deps(){
7169     unique ${1}_deps  # required for the early break test.
7170     for dummy in $LIBRARY_LIST; do  # N iteratios
7171         eval deps=\$${1}_deps
7172         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7173         unique ${1}_deps
7174         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7175     done
7176
7177     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7178     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7179 }
7180
7181 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7182 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7183
7184 map 'expand_deps $v' $LIBRARY_LIST
7185
7186 if test "$quiet" != "yes"; then
7187
7188 echo "install prefix            $prefix"
7189 echo "source path               $source_path"
7190 echo "C compiler                $cc"
7191 echo "C library                 $libc_type"
7192 if test "$host_cc" != "$cc"; then
7193     echo "host C compiler           $host_cc"
7194     echo "host C library            $host_libc_type"
7195 fi
7196 echo "ARCH                      $arch ($cpu)"
7197 if test "$build_suffix" != ""; then
7198     echo "build suffix              $build_suffix"
7199 fi
7200 if test "$progs_suffix" != ""; then
7201     echo "progs suffix              $progs_suffix"
7202 fi
7203 if test "$extra_version" != ""; then
7204     echo "version string suffix     $extra_version"
7205 fi
7206 echo "big-endian                ${bigendian-no}"
7207 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7208 if enabled x86; then
7209     echo "standalone assembly       ${x86asm-no}"
7210     echo "x86 assembler             ${x86asmexe}"
7211     echo "MMX enabled               ${mmx-no}"
7212     echo "MMXEXT enabled            ${mmxext-no}"
7213     echo "3DNow! enabled            ${amd3dnow-no}"
7214     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7215     echo "SSE enabled               ${sse-no}"
7216     echo "SSSE3 enabled             ${ssse3-no}"
7217     echo "AESNI enabled             ${aesni-no}"
7218     echo "AVX enabled               ${avx-no}"
7219     echo "AVX2 enabled              ${avx2-no}"
7220     echo "AVX-512 enabled           ${avx512-no}"
7221     echo "XOP enabled               ${xop-no}"
7222     echo "FMA3 enabled              ${fma3-no}"
7223     echo "FMA4 enabled              ${fma4-no}"
7224     echo "i686 features enabled     ${i686-no}"
7225     echo "CMOV is fast              ${fast_cmov-no}"
7226     echo "EBX available             ${ebx_available-no}"
7227     echo "EBP available             ${ebp_available-no}"
7228 fi
7229 if enabled aarch64; then
7230     echo "NEON enabled              ${neon-no}"
7231     echo "VFP enabled               ${vfp-no}"
7232 fi
7233 if enabled arm; then
7234     echo "ARMv5TE enabled           ${armv5te-no}"
7235     echo "ARMv6 enabled             ${armv6-no}"
7236     echo "ARMv6T2 enabled           ${armv6t2-no}"
7237     echo "VFP enabled               ${vfp-no}"
7238     echo "NEON enabled              ${neon-no}"
7239     echo "THUMB enabled             ${thumb-no}"
7240 fi
7241 if enabled mips; then
7242     echo "MIPS FPU enabled          ${mipsfpu-no}"
7243     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7244     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7245     echo "MIPS MSA enabled          ${msa-no}"
7246     echo "MIPS MSA2 enabled         ${msa2-no}"
7247     echo "LOONGSON MMI enabled      ${mmi-no}"
7248 fi
7249 if enabled ppc; then
7250     echo "AltiVec enabled           ${altivec-no}"
7251     echo "VSX enabled               ${vsx-no}"
7252     echo "POWER8 enabled            ${power8-no}"
7253     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7254     echo "dcbzl available           ${dcbzl-no}"
7255 fi
7256 echo "debug symbols             ${debug-no}"
7257 echo "strip symbols             ${stripping-no}"
7258 echo "optimize for size         ${small-no}"
7259 echo "optimizations             ${optimizations-no}"
7260 echo "static                    ${static-no}"
7261 echo "shared                    ${shared-no}"
7262 echo "postprocessing support    ${postproc-no}"
7263 echo "network support           ${network-no}"
7264 echo "threading support         ${thread_type-no}"
7265 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7266 echo "texi2html enabled         ${texi2html-no}"
7267 echo "perl enabled              ${perl-no}"
7268 echo "pod2man enabled           ${pod2man-no}"
7269 echo "makeinfo enabled          ${makeinfo-no}"
7270 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7271 test -n "$random_seed" &&
7272     echo "random seed               ${random_seed}"
7273 echo
7274
7275 echo "External libraries:"
7276 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7277 echo
7278
7279 echo "External libraries providing hardware acceleration:"
7280 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7281 echo
7282
7283 echo "Libraries:"
7284 print_enabled '' $LIBRARY_LIST | print_in_columns
7285 echo
7286
7287 echo "Programs:"
7288 print_enabled '' $PROGRAM_LIST | print_in_columns
7289 echo
7290
7291 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7292     echo "Enabled ${type}s:"
7293     eval list=\$$(toupper $type)_LIST
7294     print_enabled '_*' $list | print_in_columns
7295     echo
7296 done
7297
7298 if test -n "$ignore_tests"; then
7299     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7300     echo "Ignored FATE tests:"
7301     echo $ignore_tests | print_in_columns
7302     echo
7303 fi
7304
7305 echo "License: $license"
7306
7307 fi # test "$quiet" != "yes"
7308
7309 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7310     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7311         if disabled $cfg; then
7312             varname=${cfg}_disable_reason
7313             eval "warn \"Disabled $cfg because \$$varname\""
7314         fi
7315     done
7316 fi
7317
7318 if test -n "$WARNINGS"; then
7319     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7320     enabled fatal_warnings && exit 1
7321 fi
7322
7323 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7324
7325 esc(){
7326     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7327 }
7328
7329 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7330
7331 enabled stripping || strip="echo skipping strip"
7332 enabled stripping || striptype=""
7333
7334 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7335
7336 cat > ffbuild/config.mak <<EOF
7337 # Automatically generated by configure - do not modify!
7338 ifndef FFMPEG_CONFIG_MAK
7339 FFMPEG_CONFIG_MAK=1
7340 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7341 prefix=$prefix
7342 LIBDIR=\$(DESTDIR)$libdir
7343 SHLIBDIR=\$(DESTDIR)$shlibdir
7344 INCDIR=\$(DESTDIR)$incdir
7345 BINDIR=\$(DESTDIR)$bindir
7346 DATADIR=\$(DESTDIR)$datadir
7347 DOCDIR=\$(DESTDIR)$docdir
7348 MANDIR=\$(DESTDIR)$mandir
7349 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7350 INSTALL_NAME_DIR=$install_name_dir
7351 SRC_PATH=$source_path
7352 SRC_LINK=$source_link
7353 ifndef MAIN_MAKEFILE
7354 SRC_PATH:=\$(SRC_PATH:.%=..%)
7355 endif
7356 CC_IDENT=$cc_ident
7357 ARCH=$arch
7358 INTRINSICS=$intrinsics
7359 EXTERN_PREFIX=$extern_prefix
7360 CC=$cc
7361 CXX=$cxx
7362 AS=$as
7363 OBJCC=$objcc
7364 LD=$ld
7365 DEPCC=$dep_cc
7366 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7367 DEPAS=$as
7368 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7369 X86ASM=$x86asmexe
7370 DEPX86ASM=$x86asmexe
7371 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7372 AR=$ar
7373 ARFLAGS=$arflags
7374 AR_O=$ar_o
7375 AR_CMD=$ar
7376 NM_CMD=$nm
7377 RANLIB=$ranlib
7378 STRIP=$strip
7379 STRIPTYPE=$striptype
7380 NVCC=$nvcc
7381 CP=cp -p
7382 LN_S=$ln_s
7383 CPPFLAGS=$CPPFLAGS
7384 CFLAGS=$CFLAGS
7385 CXXFLAGS=$CXXFLAGS
7386 OBJCFLAGS=$OBJCFLAGS
7387 ASFLAGS=$ASFLAGS
7388 NVCCFLAGS=$nvccflags
7389 AS_C=$AS_C
7390 AS_O=$AS_O
7391 OBJCC_C=$OBJCC_C
7392 OBJCC_E=$OBJCC_E
7393 OBJCC_O=$OBJCC_O
7394 CC_C=$CC_C
7395 CC_E=$CC_E
7396 CC_O=$CC_O
7397 CXX_C=$CXX_C
7398 CXX_O=$CXX_O
7399 NVCC_C=$NVCC_C
7400 NVCC_O=$NVCC_O
7401 LD_O=$LD_O
7402 X86ASM_O=$X86ASM_O
7403 LD_LIB=$LD_LIB
7404 LD_PATH=$LD_PATH
7405 DLLTOOL=$dlltool
7406 WINDRES=$windres
7407 DEPWINDRES=$dep_cc
7408 DOXYGEN=$doxygen
7409 LDFLAGS=$LDFLAGS
7410 LDEXEFLAGS=$LDEXEFLAGS
7411 LDSOFLAGS=$LDSOFLAGS
7412 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7413 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7414 X86ASMFLAGS=$X86ASMFLAGS
7415 BUILDSUF=$build_suffix
7416 PROGSSUF=$progs_suffix
7417 FULLNAME=$FULLNAME
7418 LIBPREF=$LIBPREF
7419 LIBSUF=$LIBSUF
7420 LIBNAME=$LIBNAME
7421 SLIBPREF=$SLIBPREF
7422 SLIBSUF=$SLIBSUF
7423 EXESUF=$EXESUF
7424 EXTRA_VERSION=$extra_version
7425 CCDEP=$CCDEP
7426 CXXDEP=$CXXDEP
7427 CCDEP_FLAGS=$CCDEP_FLAGS
7428 ASDEP=$ASDEP
7429 ASDEP_FLAGS=$ASDEP_FLAGS
7430 X86ASMDEP=$X86ASMDEP
7431 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7432 CC_DEPFLAGS=$CC_DEPFLAGS
7433 AS_DEPFLAGS=$AS_DEPFLAGS
7434 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7435 HOSTCC=$host_cc
7436 HOSTLD=$host_ld
7437 HOSTCFLAGS=$host_cflags
7438 HOSTCPPFLAGS=$host_cppflags
7439 HOSTEXESUF=$HOSTEXESUF
7440 HOSTLDFLAGS=$host_ldflags
7441 HOSTEXTRALIBS=$host_extralibs
7442 DEPHOSTCC=$host_cc
7443 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7444 HOSTCCDEP=$HOSTCCDEP
7445 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7446 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7447 HOSTCC_C=$HOSTCC_C
7448 HOSTCC_O=$HOSTCC_O
7449 HOSTLD_O=$HOSTLD_O
7450 TARGET_EXEC=$target_exec $target_exec_args
7451 TARGET_PATH=$target_path
7452 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7453 CFLAGS-ffplay=${sdl2_cflags}
7454 CFLAGS_HEADERS=$CFLAGS_HEADERS
7455 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7456 EXTRALIBS=$extralibs
7457 COMPAT_OBJS=$compat_objs
7458 INSTALL=$install
7459 LIBTARGET=${LIBTARGET}
7460 SLIBNAME=${SLIBNAME}
7461 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7462 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7463 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7464 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7465 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7466 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7467 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7468 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7469 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7470 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7471 NOREDZONE_FLAGS=$noredzone_flags
7472 LIBFUZZER_PATH=$libfuzzer_path
7473 IGNORE_TESTS=$ignore_tests
7474 EOF
7475
7476 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7477
7478 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7479     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7480 done
7481
7482 cat > $TMPH <<EOF
7483 /* Automatically generated by configure - do not modify! */
7484 #ifndef FFMPEG_CONFIG_H
7485 #define FFMPEG_CONFIG_H
7486 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7487 #define FFMPEG_LICENSE "$(c_escape $license)"
7488 #define CONFIG_THIS_YEAR 2020
7489 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7490 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7491 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7492 #define av_restrict $restrict_keyword
7493 #define EXTERN_PREFIX "${extern_prefix}"
7494 #define EXTERN_ASM ${extern_prefix}
7495 #define BUILDSUF "$build_suffix"
7496 #define SLIBSUF "$SLIBSUF"
7497 #define HAVE_MMX2 HAVE_MMXEXT
7498 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7499 EOF
7500
7501 test -n "$assert_level" &&
7502     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7503
7504 test -n "$malloc_prefix" &&
7505     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7506
7507 if enabled x86asm; then
7508     append config_files $TMPASM
7509     cat > $TMPASM <<EOF
7510 ; Automatically generated by configure - do not modify!
7511 EOF
7512 fi
7513
7514 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7515
7516
7517 mkdir -p doc
7518 mkdir -p tests
7519 mkdir -p tests/api
7520 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7521
7522 print_config ARCH_   "$config_files" $ARCH_LIST
7523 print_config HAVE_   "$config_files" $HAVE_LIST
7524 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7525                                      $CONFIG_EXTRA      \
7526                                      $ALL_COMPONENTS    \
7527
7528 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7529 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7530
7531 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7532 cp_if_changed $TMPH config.h
7533 touch ffbuild/.config
7534
7535 enabled x86asm && cp_if_changed $TMPASM config.asm
7536
7537 cat > $TMPH <<EOF
7538 /* Generated by ffmpeg configure */
7539 #ifndef AVUTIL_AVCONFIG_H
7540 #define AVUTIL_AVCONFIG_H
7541 EOF
7542
7543 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7544
7545 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7546
7547 cp_if_changed $TMPH libavutil/avconfig.h
7548
7549 # full_filter_name_foo=vf_foo
7550 # full_filter_name_bar=asrc_bar
7551 # ...
7552 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7553
7554 # generate the lists of enabled components
7555 print_enabled_components(){
7556     file=$1
7557     struct_name=$2
7558     name=$3
7559     shift 3
7560     echo "static const $struct_name * const $name[] = {" > $TMPH
7561     for c in $*; do
7562         if enabled $c; then
7563             case $name in
7564                 filter_list)
7565                     eval c=\$full_filter_name_${c%_filter}
7566                 ;;
7567                 indev_list)
7568                     c=${c%_indev}_demuxer
7569                 ;;
7570                 outdev_list)
7571                     c=${c%_outdev}_muxer
7572                 ;;
7573             esac
7574             printf "    &ff_%s,\n" $c >> $TMPH
7575         fi
7576     done
7577     if [ "$name" = "filter_list" ]; then
7578         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7579             printf "    &ff_%s,\n" $c >> $TMPH
7580         done
7581     fi
7582     echo "    NULL };" >> $TMPH
7583     cp_if_changed $TMPH $file
7584 }
7585
7586 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7587 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7588 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7589 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7590 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7591 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7592 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7593 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7594 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7595
7596 # Settings for pkg-config files
7597
7598 cat > $TMPH <<EOF
7599 # Automatically generated by configure - do not modify!
7600 shared=$shared
7601 build_suffix=$build_suffix
7602 prefix=$prefix
7603 libdir=$libdir
7604 incdir=$incdir
7605 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7606 source_path=${source_path}
7607 LIBPREF=${LIBPREF}
7608 LIBSUF=${LIBSUF}
7609 extralibs_avutil="$avutil_extralibs"
7610 extralibs_avcodec="$avcodec_extralibs"
7611 extralibs_avformat="$avformat_extralibs"
7612 extralibs_avdevice="$avdevice_extralibs"
7613 extralibs_avfilter="$avfilter_extralibs"
7614 extralibs_avresample="$avresample_extralibs"
7615 extralibs_postproc="$postproc_extralibs"
7616 extralibs_swscale="$swscale_extralibs"
7617 extralibs_swresample="$swresample_extralibs"
7618 EOF
7619
7620 for lib in $LIBRARY_LIST; do
7621     lib_deps="$(eval echo \$${lib}_deps)"
7622     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7623 done
7624
7625 cp_if_changed $TMPH ffbuild/config.sh