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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libopus will enable linking to
 194   libopus and allow the libopus encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libopus.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libuavs3d       enable AVS3 decoding via libuavs3d [no]
 281   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 282   --enable-libvidstab      enable video stabilization using vid.stab [no]
 283   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 284   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 285   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 286                            native implementation exists [no]
 287   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 288   --enable-libwebp         enable WebP encoding via libwebp [no]
 289   --enable-libx264         enable H.264 encoding via x264 [no]
 290   --enable-libx265         enable HEVC encoding via x265 [no]
 291   --enable-libxavs         enable AVS encoding via xavs [no]
 292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 297   --enable-libxvid         enable Xvid encoding via xvidcore,
 298                            native MPEG-4/Xvid encoder exists [no]
 299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 300                            for dash demuxing support [no]
 301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 302   --enable-libzmq          enable message passing via libzmq [no]
 303   --enable-libzvbi         enable teletext support via libzvbi [no]
 304   --enable-lv2             enable LV2 audio filtering [no]
 305   --disable-lzma           disable lzma [autodetect]
 306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 307   --enable-mbedtls         enable mbedTLS, needed for https support
 308                            if openssl, gnutls or libtls is not used [no]
 309   --enable-mediacodec      enable Android MediaCodec support [no]
 310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 312   --enable-openal          enable OpenAL 1.1 capture support [no]
 313   --enable-opencl          enable OpenCL processing [no]
 314   --enable-opengl          enable OpenGL rendering [no]
 315   --enable-openssl         enable openssl, needed for https support
 316                            if gnutls, libtls or mbedtls is not used [no]
 317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 318   --disable-sndio          disable sndio support [autodetect]
 319   --disable-schannel       disable SChannel SSP, needed for TLS support on
 320                            Windows if openssl and gnutls are not used [autodetect]
 321   --disable-sdl2           disable sdl2 [autodetect]
 322   --disable-securetransport disable Secure Transport, needed for TLS support
 323                            on OSX if openssl and gnutls are not used [autodetect]
 324   --enable-vapoursynth     enable VapourSynth demuxer [no]
 325   --enable-vulkan          enable Vulkan code [no]
 326   --disable-xlib           disable xlib [autodetect]
 327   --disable-zlib           disable zlib [autodetect]
 328
 329   The following libraries provide various hardware acceleration features:
 330   --disable-amf            disable AMF video encoding code [autodetect]
 331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 338   --enable-libdrm          enable DRM code (Linux) [no]
 339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 344   --enable-omx             enable OpenMAX IL code [no]
 345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 351
 352 Toolchain options:
 353   --arch=ARCH              select architecture [$arch]
 354   --cpu=CPU                select the minimum required CPU (affects
 355                            instruction selection, may crash on older CPUs)
 356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 357   --progs-suffix=SUFFIX    program name suffix []
 358   --enable-cross-compile   assume a cross-compiler is used
 359   --sysroot=PATH           root of cross-build tree
 360   --sysinclude=PATH        location of cross-build system headers
 361   --target-os=OS           compiler targets OS [$target_os]
 362   --target-exec=CMD        command to run executables on target
 363   --target-path=DIR        path to view of build directory on target
 364   --target-samples=DIR     path to samples directory on target
 365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 366   --toolchain=NAME         set tool defaults according to NAME
 367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 369                            valgrind-massif, valgrind-memcheck,
 370                            msvc, icl, gcov, llvm-cov, hardened)
 371   --nm=NM                  use nm tool NM [$nm_default]
 372   --ar=AR                  use archive tool AR [$ar_default]
 373   --as=AS                  use assembler AS [$as_default]
 374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 375   --strip=STRIP            use strip tool STRIP [$strip_default]
 376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 378   --cc=CC                  use C compiler CC [$cc_default]
 379   --cxx=CXX                use C compiler CXX [$cxx_default]
 380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 383   --ld=LD                  use linker LD [$ld_default]
 384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 388   --host-cc=HOSTCC         use host C compiler HOSTCC
 389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 391   --host-ld=HOSTLD         use host linker HOSTLD
 392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 394   --host-os=OS             compiler host OS [$target_os]
 395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 402   --extra-version=STRING   version string suffix []
 403   --optflags=OPTFLAGS      override optimization-related compiler flags
 404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 405   --build-suffix=SUFFIX    library name suffix []
 406   --enable-pic             build position-independent code
 407   --enable-thumb           compile for Thumb instruction set
 408   --enable-lto             use link-time optimization
 409   --env="ENV=override"     override the environment variables
 410
 411 Advanced options (experts only):
 412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 413   --custom-allocator=NAME  use a supported custom allocator
 414   --disable-symver         disable symbol versioning
 415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 416   --disable-safe-bitstream-reader
 417                            disable buffer boundary checking in bitreaders
 418                            (faster, but may crash)
 419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 420
 421 Optimization options (experts only):
 422   --disable-asm            disable all assembly optimizations
 423   --disable-altivec        disable AltiVec optimizations
 424   --disable-vsx            disable VSX optimizations
 425   --disable-power8         disable POWER8 optimizations
 426   --disable-amd3dnow       disable 3DNow! optimizations
 427   --disable-amd3dnowext    disable 3DNow! extended optimizations
 428   --disable-mmx            disable MMX optimizations
 429   --disable-mmxext         disable MMXEXT optimizations
 430   --disable-sse            disable SSE optimizations
 431   --disable-sse2           disable SSE2 optimizations
 432   --disable-sse3           disable SSE3 optimizations
 433   --disable-ssse3          disable SSSE3 optimizations
 434   --disable-sse4           disable SSE4 optimizations
 435   --disable-sse42          disable SSE4.2 optimizations
 436   --disable-avx            disable AVX optimizations
 437   --disable-xop            disable XOP optimizations
 438   --disable-fma3           disable FMA3 optimizations
 439   --disable-fma4           disable FMA4 optimizations
 440   --disable-avx2           disable AVX2 optimizations
 441   --disable-avx512         disable AVX-512 optimizations
 442   --disable-aesni          disable AESNI optimizations
 443   --disable-armv5te        disable armv5te optimizations
 444   --disable-armv6          disable armv6 optimizations
 445   --disable-armv6t2        disable armv6t2 optimizations
 446   --disable-vfp            disable VFP optimizations
 447   --disable-neon           disable NEON optimizations
 448   --disable-inline-asm     disable use of inline assembly
 449   --disable-x86asm         disable use of standalone x86 assembly
 450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 452   --disable-msa            disable MSA optimizations
 453   --disable-msa2           disable MSA2 optimizations
 454   --disable-mipsfpu        disable floating point MIPS optimizations
 455   --disable-mmi            disable Loongson SIMD optimizations
 456   --disable-fast-unaligned consider unaligned accesses slow
 457
 458 Developer options (useful when working on FFmpeg itself):
 459   --disable-debug          disable debugging symbols
 460   --enable-debug=LEVEL     set the debug level [$debuglevel]
 461   --disable-optimizations  disable compiler optimizations
 462   --enable-extra-warnings  enable more compiler warnings
 463   --disable-stripping      disable stripping of executables and shared libraries
 464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 465                            2 causes a slowdown at runtime.
 466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 468                            leaks and errors, using the specified valgrind binary.
 469                            Cannot be combined with --target-exec
 470   --enable-ftrapv          Trap arithmetic overflows
 471   --samples=PATH           location of test samples for FATE, if not set use
 472                            \$FATE_SAMPLES at make invocation time.
 473   --enable-neon-clobber-test check NEON registers for clobbering (should be
 474                            used only for debugging purposes)
 475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 476                            should be used only for debugging purposes)
 477   --enable-random          randomly enable/disable components
 478   --disable-random
 479   --enable-random=LIST     randomly enable/disable specific components or
 480   --disable-random=LIST    component groups. LIST is a comma-separated list
 481                            of NAME[:PROB] entries where NAME is a component
 482                            (group) and PROB the probability associated with
 483                            NAME (default 0.5).
 484   --random-seed=VALUE      seed value for --enable/disable-random
 485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 486                            (only applies to --disable-optimizations builds)
 487   --enable-ossfuzz         Enable building fuzzer tool
 488   --libfuzzer=PATH         path to libfuzzer
 489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 490                            in the name) of tests whose result is ignored
 491   --enable-linux-perf      enable Linux Performance Monitor API
 492   --disable-large-tests    disable tests that use a large amount of memory
 493
 494 NOTE: Object files are built at the place where configure is launched.
 495 EOF
 496   exit 0
 497 }
 498
 499 if test -t 1 && which tput >/dev/null 2>&1; then
 500     ncolors=$(tput colors)
 501     if test -n "$ncolors" && test $ncolors -ge 8; then
 502         bold_color=$(tput bold)
 503         warn_color=$(tput setaf 3)
 504         error_color=$(tput setaf 1)
 505         reset_color=$(tput sgr0)
 506     fi
 507     # 72 used instead of 80 since that's the default of pr
 508     ncols=$(tput cols)
 509 fi
 510 : ${ncols:=72}
 511
 512 log(){
 513     echo "$@" >> $logfile
 514 }
 515
 516 log_file(){
 517     log BEGIN "$1"
 518     log_file_i=1
 519     while IFS= read -r log_file_line; do
 520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 521         log_file_i=$(($log_file_i+1))
 522     done < "$1" >> "$logfile"
 523     log END "$1"
 524 }
 525
 526 warn(){
 527     log "WARNING: $*"
 528     WARNINGS="${WARNINGS}WARNING: $*\n"
 529 }
 530
 531 die(){
 532     log "$@"
 533     echo "$error_color$bold_color$@$reset_color"
 534     cat <<EOF
 535
 536 If you think configure made a mistake, make sure you are using the latest
 537 version from Git.  If the latest version fails, report the problem to the
 538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 539 EOF
 540     if disabled logging; then
 541         cat <<EOF
 542 Rerun configure with logging enabled (do not use --disable-logging), and
 543 include the log this produces with your report.
 544 EOF
 545     else
 546         cat <<EOF
 547 Include the log file "$logfile" produced by configure as this will help
 548 solve the problem.
 549 EOF
 550     fi
 551     exit 1
 552 }
 553
 554 # Avoid locale weirdness, besides we really just want to translate ASCII.
 555 toupper(){
 556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 557 }
 558
 559 tolower(){
 560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 561 }
 562
 563 c_escape(){
 564     echo "$*" | sed 's/["\\]/\\\0/g'
 565 }
 566
 567 sh_quote(){
 568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 570     echo "$v"
 571 }
 572
 573 cleanws(){
 574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 575 }
 576
 577 filter(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 filter_out(){
 586     pat=$1
 587     shift
 588     for v; do
 589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 590     done
 591 }
 592
 593 map(){
 594     m=$1
 595     shift
 596     for v; do eval $m; done
 597 }
 598
 599 add_suffix(){
 600     suffix=$1
 601     shift
 602     for v; do echo ${v}${suffix}; done
 603 }
 604
 605 remove_suffix(){
 606     suffix=$1
 607     shift
 608     for v; do echo ${v%$suffix}; done
 609 }
 610
 611 set_all(){
 612     value=$1
 613     shift
 614     for var in $*; do
 615         eval $var=$value
 616     done
 617 }
 618
 619 set_weak(){
 620     value=$1
 621     shift
 622     for var; do
 623         eval : \${$var:=$value}
 624     done
 625 }
 626
 627 sanitize_var_name(){
 628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 629 }
 630
 631 set_sanitized(){
 632     var=$1
 633     shift
 634     eval $(sanitize_var_name "$var")='$*'
 635 }
 636
 637 get_sanitized(){
 638     eval echo \$$(sanitize_var_name "$1")
 639 }
 640
 641 pushvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:=0}
 644         eval ${pvar}_${level}="\$$pvar"
 645         eval ${pvar}_level=$(($level+1))
 646     done
 647 }
 648
 649 popvar(){
 650     for pvar in $*; do
 651         eval level=\${${pvar}_level:-0}
 652         test $level = 0 && continue
 653         eval level=$(($level-1))
 654         eval $pvar="\${${pvar}_${level}}"
 655         eval ${pvar}_level=$level
 656         eval unset ${pvar}_${level}
 657     done
 658 }
 659
 660 request(){
 661     for var in $*; do
 662         eval ${var}_requested=yes
 663         eval $var=
 664     done
 665 }
 666
 667 warn_if_gets_disabled(){
 668     for var in $*; do
 669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 670     done
 671 }
 672
 673 enable(){
 674     set_all yes $*
 675 }
 676
 677 disable(){
 678     set_all no $*
 679 }
 680
 681 disable_with_reason(){
 682     disable $1
 683     eval "${1}_disable_reason=\"$2\""
 684     if requested $1; then
 685         die "ERROR: $1 requested, but $2"
 686     fi
 687 }
 688
 689 enable_weak(){
 690     set_weak yes $*
 691 }
 692
 693 disable_weak(){
 694     set_weak no $*
 695 }
 696
 697 enable_sanitized(){
 698     for var; do
 699         enable $(sanitize_var_name $var)
 700     done
 701 }
 702
 703 disable_sanitized(){
 704     for var; do
 705         disable $(sanitize_var_name $var)
 706     done
 707 }
 708
 709 do_enable_deep(){
 710     for var; do
 711         enabled $var && continue
 712         set -- $var
 713         eval enable_deep \$${var}_select
 714         var=$1
 715         eval enable_deep_weak \$${var}_suggest
 716     done
 717 }
 718
 719 enable_deep(){
 720     do_enable_deep $*
 721     enable $*
 722 }
 723
 724 enable_deep_weak(){
 725     for var; do
 726         disabled $var && continue
 727         set -- $var
 728         do_enable_deep $var
 729         var=$1
 730         enable_weak $var
 731     done
 732 }
 733
 734 requested(){
 735     test "${1#!}" = "$1" && op="=" || op="!="
 736     eval test "x\$${1#!}_requested" $op "xyes"
 737 }
 738
 739 enabled(){
 740     test "${1#!}" = "$1" && op="=" || op="!="
 741     eval test "x\$${1#!}" $op "xyes"
 742 }
 743
 744 disabled(){
 745     test "${1#!}" = "$1" && op="=" || op="!="
 746     eval test "x\$${1#!}" $op "xno"
 747 }
 748
 749 enabled_all(){
 750     for opt; do
 751         enabled $opt || return 1
 752     done
 753 }
 754
 755 disabled_all(){
 756     for opt; do
 757         disabled $opt || return 1
 758     done
 759 }
 760
 761 enabled_any(){
 762     for opt; do
 763         enabled $opt && return 0
 764     done
 765 }
 766
 767 disabled_any(){
 768     for opt; do
 769         disabled $opt && return 0
 770     done
 771     return 1
 772 }
 773
 774 set_default(){
 775     for opt; do
 776         eval : \${$opt:=\$${opt}_default}
 777     done
 778 }
 779
 780 is_in(){
 781     value=$1
 782     shift
 783     for var in $*; do
 784         [ $var = $value ] && return 0
 785     done
 786     return 1
 787 }
 788
 789 # The cfg loop is very hot (several thousands iterations), and in bash also
 790 # potentialy quite slow. Try to abort the iterations early, preferably without
 791 # calling functions. 70%+ of the time cfg is already done or without deps.
 792 check_deps(){
 793     for cfg; do
 794         eval [ x\$${cfg}_checking = xdone ] && continue
 795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 796
 797         eval "
 798         dep_all=\$${cfg}_deps
 799         dep_any=\$${cfg}_deps_any
 800         dep_con=\$${cfg}_conflict
 801         dep_sel=\$${cfg}_select
 802         dep_sgs=\$${cfg}_suggest
 803         dep_ifa=\$${cfg}_if
 804         dep_ifn=\$${cfg}_if_any
 805         "
 806
 807         # most of the time here $cfg has no deps - avoid costly no-op work
 808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 809             eval ${cfg}_checking=inprogress
 810
 811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 814
 815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 821
 822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 823
 824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 825                 # filter out library deps, these do not belong in extralibs
 826                 is_in $dep $LIBRARY_LIST && continue
 827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 828             done
 829         fi
 830
 831         eval ${cfg}_checking=done
 832     done
 833 }
 834
 835 print_config(){
 836     pfx=$1
 837     files=$2
 838     shift 2
 839     map 'eval echo "$v \${$v:-no}"' "$@" |
 840     awk "BEGIN { split(\"$files\", files) }
 841         {
 842             c = \"$pfx\" toupper(\$1);
 843             v = \$2;
 844             sub(/yes/, 1, v);
 845             sub(/no/,  0, v);
 846             for (f in files) {
 847                 file = files[f];
 848                 if (file ~ /\\.h\$/) {
 849                     printf(\"#define %s %d\\n\", c, v) >>file;
 850                 } else if (file ~ /\\.asm\$/) {
 851                     printf(\"%%define %s %d\\n\", c, v) >>file;
 852                 } else if (file ~ /\\.mak\$/) {
 853                     n = -v ? \"\" : \"!\";
 854                     printf(\"%s%s=yes\\n\", n, c) >>file;
 855                 } else if (file ~ /\\.texi\$/) {
 856                     pre = -v ? \"\" : \"@c \";
 857                     yesno = \$2;
 858                     c2 = tolower(c);
 859                     gsub(/_/, \"-\", c2);
 860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 861                 }
 862             }
 863         }"
 864 }
 865
 866 print_enabled(){
 867     suf=$1
 868     shift
 869     for v; do
 870         enabled $v && printf "%s\n" ${v%$suf}
 871     done
 872 }
 873
 874 append(){
 875     var=$1
 876     shift
 877     eval "$var=\"\$$var $*\""
 878 }
 879
 880 prepend(){
 881     var=$1
 882     shift
 883     eval "$var=\"$* \$$var\""
 884 }
 885
 886 reverse () {
 887     eval '
 888         reverse_out=
 889         for v in $'$1'; do
 890             reverse_out="$v $reverse_out"
 891         done
 892         '$1'=$reverse_out
 893     '
 894 }
 895
 896 # keeps the last occurence of each non-unique item
 897 unique(){
 898     unique_out=
 899     eval unique_in=\$$1
 900     reverse unique_in
 901     for v in $unique_in; do
 902         # " $unique_out" +space such that every item is surrounded with spaces
 903         case " $unique_out" in *" $v "*) continue; esac  # already in list
 904         unique_out="$unique_out$v "
 905     done
 906     reverse unique_out
 907     eval $1=\$unique_out
 908 }
 909
 910 resolve(){
 911     resolve_out=
 912     eval resolve_in=\$$1
 913     for v in $resolve_in; do
 914         eval 'resolve_out="$resolve_out$'$v' "'
 915     done
 916     eval $1=\$resolve_out
 917 }
 918
 919 add_cppflags(){
 920     append CPPFLAGS "$@"
 921 }
 922
 923 add_cflags(){
 924     append CFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_cflags_headers(){
 928     append CFLAGS_HEADERS $($cflags_filter "$@")
 929 }
 930
 931 add_cxxflags(){
 932     append CXXFLAGS $($cflags_filter "$@")
 933 }
 934
 935 add_objcflags(){
 936     append OBJCFLAGS $($objcflags_filter "$@")
 937 }
 938
 939 add_asflags(){
 940     append ASFLAGS $($asflags_filter "$@")
 941 }
 942
 943 add_ldflags(){
 944     append LDFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldexeflags(){
 948     append LDEXEFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_ldsoflags(){
 952     append LDSOFLAGS $($ldflags_filter "$@")
 953 }
 954
 955 add_extralibs(){
 956     prepend extralibs $($ldflags_filter "$@")
 957 }
 958
 959 add_stripflags(){
 960     append ASMSTRIPFLAGS "$@"
 961 }
 962
 963 add_host_cppflags(){
 964     append host_cppflags "$@"
 965 }
 966
 967 add_host_cflags(){
 968     append host_cflags $($host_cflags_filter "$@")
 969 }
 970
 971 add_host_ldflags(){
 972     append host_ldflags $($host_ldflags_filter "$@")
 973 }
 974
 975 add_compat(){
 976     append compat_objs $1
 977     shift
 978     map 'add_cppflags -D$v' "$@"
 979 }
 980
 981 test_cmd(){
 982     log "$@"
 983     "$@" >> $logfile 2>&1
 984 }
 985
 986 test_stat(){
 987     log test_stat "$@"
 988     stat "$1" >> $logfile 2>&1
 989 }
 990
 991 cc_e(){
 992     eval printf '%s\\n' $CC_E
 993 }
 994
 995 cc_o(){
 996     eval printf '%s\\n' $CC_O
 997 }
 998
 999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libuavs3d
1815     libv4l2
1816     libvmaf
1817     libvorbis
1818     libvpx
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_perf_event_h
2129     machine_ioctl_bt848_h
2130     machine_ioctl_meteor_h
2131     malloc_h
2132     opencv2_core_core_c_h
2133     OpenGL_gl3_h
2134     poll_h
2135     sys_param_h
2136     sys_resource_h
2137     sys_select_h
2138     sys_soundcard_h
2139     sys_time_h
2140     sys_un_h
2141     sys_videoio_h
2142     termios_h
2143     udplite_h
2144     unistd_h
2145     valgrind_valgrind_h
2146     windows_h
2147     winsock2_h
2148 "
2149
2150 INTRINSICS_LIST="
2151     intrinsics_neon
2152 "
2153
2154 COMPLEX_FUNCS="
2155     cabs
2156     cexp
2157 "
2158
2159 MATH_FUNCS="
2160     atanf
2161     atan2f
2162     cbrt
2163     cbrtf
2164     copysign
2165     cosf
2166     erf
2167     exp2
2168     exp2f
2169     expf
2170     hypot
2171     isfinite
2172     isinf
2173     isnan
2174     ldexpf
2175     llrint
2176     llrintf
2177     log2
2178     log2f
2179     log10f
2180     lrint
2181     lrintf
2182     powf
2183     rint
2184     round
2185     roundf
2186     sinf
2187     trunc
2188     truncf
2189 "
2190
2191 SYSTEM_FEATURES="
2192     dos_paths
2193     libc_msvcrt
2194     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2195     section_data_rel_ro
2196     threads
2197     uwp
2198     winrt
2199 "
2200
2201 SYSTEM_FUNCS="
2202     access
2203     aligned_malloc
2204     arc4random
2205     clock_gettime
2206     closesocket
2207     CommandLineToArgvW
2208     fcntl
2209     getaddrinfo
2210     gethrtime
2211     getopt
2212     GetModuleHandle
2213     GetProcessAffinityMask
2214     GetProcessMemoryInfo
2215     GetProcessTimes
2216     getrusage
2217     GetStdHandle
2218     GetSystemTimeAsFileTime
2219     gettimeofday
2220     glob
2221     glXGetProcAddress
2222     gmtime_r
2223     inet_aton
2224     isatty
2225     kbhit
2226     localtime_r
2227     lstat
2228     lzo1x_999_compress
2229     mach_absolute_time
2230     MapViewOfFile
2231     memalign
2232     mkstemp
2233     mmap
2234     mprotect
2235     nanosleep
2236     PeekNamedPipe
2237     posix_memalign
2238     pthread_cancel
2239     sched_getaffinity
2240     SecItemImport
2241     SetConsoleTextAttribute
2242     SetConsoleCtrlHandler
2243     SetDllDirectory
2244     setmode
2245     setrlimit
2246     Sleep
2247     strerror_r
2248     sysconf
2249     sysctl
2250     usleep
2251     UTGetOSTypeFromString
2252     VirtualAlloc
2253     wglGetProcAddress
2254 "
2255
2256 SYSTEM_LIBRARIES="
2257     bcrypt
2258     vaapi_drm
2259     vaapi_x11
2260     vdpau_x11
2261 "
2262
2263 TOOLCHAIN_FEATURES="
2264     as_arch_directive
2265     as_dn_directive
2266     as_fpu_directive
2267     as_func
2268     as_object_arch
2269     asm_mod_q
2270     blocks_extension
2271     ebp_available
2272     ebx_available
2273     gnu_as
2274     gnu_windres
2275     ibm_asm
2276     inline_asm_direct_symbol_refs
2277     inline_asm_labels
2278     inline_asm_nonlocal_labels
2279     pragma_deprecated
2280     rsync_contimeout
2281     symver_asm_label
2282     symver_gnu_asm
2283     vfp_args
2284     xform_asm
2285     xmm_clobbers
2286 "
2287
2288 TYPES_LIST="
2289     kCMVideoCodecType_HEVC
2290     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2291     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2292     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2293     kCVImageBufferTransferFunction_Linear
2294     socklen_t
2295     struct_addrinfo
2296     struct_group_source_req
2297     struct_ip_mreq_source
2298     struct_ipv6_mreq
2299     struct_msghdr_msg_flags
2300     struct_pollfd
2301     struct_rusage_ru_maxrss
2302     struct_sctp_event_subscribe
2303     struct_sockaddr_in6
2304     struct_sockaddr_sa_len
2305     struct_sockaddr_storage
2306     struct_stat_st_mtim_tv_nsec
2307     struct_v4l2_frmivalenum_discrete
2308 "
2309
2310 HAVE_LIST="
2311     $ARCH_EXT_LIST
2312     $(add_suffix _external $ARCH_EXT_LIST)
2313     $(add_suffix _inline   $ARCH_EXT_LIST)
2314     $ARCH_FEATURES
2315     $BUILTIN_LIST
2316     $COMPLEX_FUNCS
2317     $HAVE_LIST_CMDLINE
2318     $HAVE_LIST_PUB
2319     $HEADERS_LIST
2320     $INTRINSICS_LIST
2321     $MATH_FUNCS
2322     $SYSTEM_FEATURES
2323     $SYSTEM_FUNCS
2324     $SYSTEM_LIBRARIES
2325     $THREADS_LIST
2326     $TOOLCHAIN_FEATURES
2327     $TYPES_LIST
2328     libdrm_getfb2
2329     makeinfo
2330     makeinfo_html
2331     opencl_d3d11
2332     opencl_drm_arm
2333     opencl_drm_beignet
2334     opencl_dxva2
2335     opencl_vaapi_beignet
2336     opencl_vaapi_intel_media
2337     perl
2338     pod2man
2339     texi2html
2340 "
2341
2342 # options emitted with CONFIG_ prefix but not available on the command line
2343 CONFIG_EXTRA="
2344     aandcttables
2345     ac3dsp
2346     adts_header
2347     atsc_a53
2348     audio_frame_queue
2349     audiodsp
2350     blockdsp
2351     bswapdsp
2352     cabac
2353     cbs
2354     cbs_av1
2355     cbs_h264
2356     cbs_h265
2357     cbs_jpeg
2358     cbs_mpeg2
2359     cbs_vp9
2360     dirac_parse
2361     dnn
2362     dvprofile
2363     exif
2364     faandct
2365     faanidct
2366     fdctdsp
2367     flacdsp
2368     fmtconvert
2369     frame_thread_encoder
2370     g722dsp
2371     golomb
2372     gplv3
2373     h263dsp
2374     h264chroma
2375     h264dsp
2376     h264parse
2377     h264pred
2378     h264qpel
2379     hevcparse
2380     hpeldsp
2381     huffman
2382     huffyuvdsp
2383     huffyuvencdsp
2384     idctdsp
2385     iirfilter
2386     mdct15
2387     intrax8
2388     iso_media
2389     ividsp
2390     jpegtables
2391     lgplv3
2392     libx262
2393     llauddsp
2394     llviddsp
2395     llvidencdsp
2396     lpc
2397     lzf
2398     me_cmp
2399     mpeg_er
2400     mpegaudio
2401     mpegaudiodsp
2402     mpegaudioheader
2403     mpegvideo
2404     mpegvideoenc
2405     mss34dsp
2406     pixblockdsp
2407     qpeldsp
2408     qsv
2409     qsvdec
2410     qsvenc
2411     qsvvpp
2412     rangecoder
2413     riffdec
2414     riffenc
2415     rtpdec
2416     rtpenc_chain
2417     rv34dsp
2418     scene_sad
2419     sinewin
2420     snappy
2421     srtp
2422     startcode
2423     texturedsp
2424     texturedspenc
2425     tpeldsp
2426     vaapi_1
2427     vaapi_encode
2428     vc1dsp
2429     videodsp
2430     vp3dsp
2431     vp56dsp
2432     vp8dsp
2433     wma_freqs
2434     wmv2dsp
2435 "
2436
2437 CMDLINE_SELECT="
2438     $ARCH_EXT_LIST
2439     $CONFIG_LIST
2440     $HAVE_LIST_CMDLINE
2441     $THREADS_LIST
2442     asm
2443     cross_compile
2444     debug
2445     extra_warnings
2446     logging
2447     lto
2448     optimizations
2449     rpath
2450     stripping
2451 "
2452
2453 PATHS_LIST="
2454     bindir
2455     datadir
2456     docdir
2457     incdir
2458     libdir
2459     mandir
2460     pkgconfigdir
2461     prefix
2462     shlibdir
2463     install_name_dir
2464 "
2465
2466 CMDLINE_SET="
2467     $PATHS_LIST
2468     ar
2469     arch
2470     as
2471     assert_level
2472     build_suffix
2473     cc
2474     objcc
2475     cpu
2476     cross_prefix
2477     custom_allocator
2478     cxx
2479     dep_cc
2480     doxygen
2481     env
2482     extra_version
2483     gas
2484     host_cc
2485     host_cflags
2486     host_extralibs
2487     host_ld
2488     host_ldflags
2489     host_os
2490     ignore_tests
2491     install
2492     ld
2493     ln_s
2494     logfile
2495     malloc_prefix
2496     nm
2497     optflags
2498     nvcc
2499     nvccflags
2500     pkg_config
2501     pkg_config_flags
2502     progs_suffix
2503     random_seed
2504     ranlib
2505     samples
2506     strip
2507     sws_max_filter_size
2508     sysinclude
2509     sysroot
2510     target_exec
2511     target_os
2512     target_path
2513     target_samples
2514     tempprefix
2515     toolchain
2516     valgrind
2517     windres
2518     x86asmexe
2519 "
2520
2521 CMDLINE_APPEND="
2522     extra_cflags
2523     extra_cxxflags
2524     extra_objcflags
2525     host_cppflags
2526 "
2527
2528 # code dependency declarations
2529
2530 # architecture extensions
2531
2532 armv5te_deps="arm"
2533 armv6_deps="arm"
2534 armv6t2_deps="arm"
2535 armv8_deps="aarch64"
2536 neon_deps_any="aarch64 arm"
2537 intrinsics_neon_deps="neon"
2538 vfp_deps_any="aarch64 arm"
2539 vfpv3_deps="vfp"
2540 setend_deps="arm"
2541
2542 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2543
2544 altivec_deps="ppc"
2545 dcbzl_deps="ppc"
2546 ldbrx_deps="ppc"
2547 ppc4xx_deps="ppc"
2548 vsx_deps="altivec"
2549 power8_deps="vsx"
2550
2551 loongson2_deps="mips"
2552 loongson3_deps="mips"
2553 mips32r2_deps="mips"
2554 mips32r5_deps="mips"
2555 mips32r6_deps="mips"
2556 mips64r2_deps="mips"
2557 mips64r6_deps="mips"
2558 mipsfpu_deps="mips"
2559 mipsdsp_deps="mips"
2560 mipsdspr2_deps="mips"
2561 mmi_deps_any="loongson2 loongson3"
2562 msa_deps="mipsfpu"
2563 msa2_deps="msa"
2564
2565 cpunop_deps="i686"
2566 x86_64_select="i686"
2567 x86_64_suggest="fast_cmov"
2568
2569 amd3dnow_deps="mmx"
2570 amd3dnowext_deps="amd3dnow"
2571 i686_deps="x86"
2572 mmx_deps="x86"
2573 mmxext_deps="mmx"
2574 sse_deps="mmxext"
2575 sse2_deps="sse"
2576 sse3_deps="sse2"
2577 ssse3_deps="sse3"
2578 sse4_deps="ssse3"
2579 sse42_deps="sse4"
2580 aesni_deps="sse42"
2581 avx_deps="sse42"
2582 xop_deps="avx"
2583 fma3_deps="avx"
2584 fma4_deps="avx"
2585 avx2_deps="avx"
2586 avx512_deps="avx2"
2587
2588 mmx_external_deps="x86asm"
2589 mmx_inline_deps="inline_asm x86"
2590 mmx_suggest="mmx_external mmx_inline"
2591
2592 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2593     eval dep=\$${ext}_deps
2594     eval ${ext}_external_deps='"${dep}_external"'
2595     eval ${ext}_inline_deps='"${dep}_inline"'
2596     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2597 done
2598
2599 aligned_stack_if_any="aarch64 ppc x86"
2600 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2601 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2602 fast_unaligned_if_any="aarch64 ppc x86"
2603 simd_align_16_if_any="altivec neon sse"
2604 simd_align_32_if_any="avx"
2605 simd_align_64_if_any="avx512"
2606
2607 # system capabilities
2608 linux_perf_deps="linux_perf_event_h"
2609 symver_if_any="symver_asm_label symver_gnu_asm"
2610 valgrind_backtrace_conflict="optimizations"
2611 valgrind_backtrace_deps="valgrind_valgrind_h"
2612
2613 # threading support
2614 atomics_gcc_if="sync_val_compare_and_swap"
2615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2616 atomics_win32_if="MemoryBarrier"
2617 atomics_native_if_any="$ATOMICS_LIST"
2618 w32threads_deps="atomics_native"
2619 threads_if_any="$THREADS_LIST"
2620
2621 # subsystems
2622 cbs_av1_select="cbs"
2623 cbs_h264_select="cbs"
2624 cbs_h265_select="cbs"
2625 cbs_jpeg_select="cbs"
2626 cbs_mpeg2_select="cbs"
2627 cbs_vp9_select="cbs"
2628 dct_select="rdft"
2629 dirac_parse_select="golomb"
2630 dnn_suggest="libtensorflow libopenvino"
2631 dnn_deps="swscale"
2632 error_resilience_select="me_cmp"
2633 faandct_deps="faan"
2634 faandct_select="fdctdsp"
2635 faanidct_deps="faan"
2636 faanidct_select="idctdsp"
2637 h264dsp_select="startcode"
2638 hevcparse_select="atsc_a53 golomb"
2639 frame_thread_encoder_deps="encoders threads"
2640 intrax8_select="blockdsp idctdsp"
2641 mdct_select="fft"
2642 mdct15_select="fft"
2643 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2644 mpeg_er_select="error_resilience"
2645 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2646 mpegaudiodsp_select="dct"
2647 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2648 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2649 vc1dsp_select="h264chroma qpeldsp startcode"
2650 rdft_select="fft"
2651
2652 # decoders / encoders
2653 aac_decoder_select="adts_header mdct15 mdct sinewin"
2654 aac_fixed_decoder_select="adts_header mdct sinewin"
2655 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2656 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2657 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2658 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2659 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2661 acelp_kelvin_decoder_select="audiodsp"
2662 adpcm_g722_decoder_select="g722dsp"
2663 adpcm_g722_encoder_select="g722dsp"
2664 aic_decoder_select="golomb idctdsp"
2665 alac_encoder_select="lpc"
2666 als_decoder_select="bswapdsp"
2667 amrnb_decoder_select="lsp"
2668 amrwb_decoder_select="lsp"
2669 amv_decoder_select="sp5x_decoder exif"
2670 amv_encoder_select="jpegtables mpegvideoenc"
2671 ape_decoder_select="bswapdsp llauddsp"
2672 apng_decoder_deps="zlib"
2673 apng_encoder_deps="zlib"
2674 apng_encoder_select="llvidencdsp"
2675 aptx_decoder_select="audio_frame_queue"
2676 aptx_encoder_select="audio_frame_queue"
2677 aptx_hd_decoder_select="audio_frame_queue"
2678 aptx_hd_encoder_select="audio_frame_queue"
2679 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2682 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2683 atrac1_decoder_select="mdct sinewin"
2684 atrac3_decoder_select="mdct"
2685 atrac3al_decoder_select="mdct"
2686 atrac3p_decoder_select="mdct sinewin"
2687 atrac3pal_decoder_select="mdct sinewin"
2688 atrac9_decoder_select="mdct"
2689 av1_decoder_select="cbs_av1"
2690 avrn_decoder_select="exif jpegtables"
2691 bink_decoder_select="blockdsp hpeldsp"
2692 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2693 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2694 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2695 clearvideo_decoder_select="idctdsp"
2696 cllc_decoder_select="bswapdsp"
2697 comfortnoise_encoder_select="lpc"
2698 cook_decoder_select="audiodsp mdct sinewin"
2699 cscd_decoder_select="lzo"
2700 cscd_decoder_suggest="zlib"
2701 dca_decoder_select="mdct"
2702 dca_encoder_select="mdct"
2703 dds_decoder_select="texturedsp"
2704 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2705 dnxhd_decoder_select="blockdsp idctdsp"
2706 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2707 dolby_e_decoder_select="mdct"
2708 dvvideo_decoder_select="dvprofile idctdsp"
2709 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2710 dxa_decoder_deps="zlib"
2711 dxv_decoder_select="lzf texturedsp"
2712 eac3_decoder_select="ac3_decoder"
2713 eac3_encoder_select="ac3_encoder"
2714 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2715 eatgq_decoder_select="aandcttables"
2716 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2717 exr_decoder_deps="zlib"
2718 ffv1_decoder_select="rangecoder"
2719 ffv1_encoder_select="rangecoder"
2720 ffvhuff_decoder_select="huffyuv_decoder"
2721 ffvhuff_encoder_select="huffyuv_encoder"
2722 fic_decoder_select="golomb"
2723 flac_decoder_select="flacdsp"
2724 flac_encoder_select="bswapdsp flacdsp lpc"
2725 flashsv2_decoder_deps="zlib"
2726 flashsv2_encoder_deps="zlib"
2727 flashsv_decoder_deps="zlib"
2728 flashsv_encoder_deps="zlib"
2729 flv_decoder_select="h263_decoder"
2730 flv_encoder_select="h263_encoder"
2731 fourxm_decoder_select="blockdsp bswapdsp"
2732 fraps_decoder_select="bswapdsp huffman"
2733 g2m_decoder_deps="zlib"
2734 g2m_decoder_select="blockdsp idctdsp jpegtables"
2735 g729_decoder_select="audiodsp"
2736 h261_decoder_select="mpegvideo"
2737 h261_encoder_select="mpegvideoenc"
2738 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2739 h263_encoder_select="h263dsp mpegvideoenc"
2740 h263i_decoder_select="h263_decoder"
2741 h263p_decoder_select="h263_decoder"
2742 h263p_encoder_select="h263_encoder"
2743 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2744 h264_decoder_suggest="error_resilience"
2745 hap_decoder_select="snappy texturedsp"
2746 hap_encoder_deps="libsnappy"
2747 hap_encoder_select="texturedspenc"
2748 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2749 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2750 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2751 hymt_decoder_select="huffyuv_decoder"
2752 iac_decoder_select="imc_decoder"
2753 imc_decoder_select="bswapdsp fft mdct sinewin"
2754 imm4_decoder_select="bswapdsp"
2755 imm5_decoder_select="h264_decoder hevc_decoder"
2756 indeo3_decoder_select="hpeldsp"
2757 indeo4_decoder_select="ividsp"
2758 indeo5_decoder_select="ividsp"
2759 interplay_video_decoder_select="hpeldsp"
2760 jpegls_decoder_select="mjpeg_decoder"
2761 jv_decoder_select="blockdsp"
2762 lagarith_decoder_select="llviddsp"
2763 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2764 lscr_decoder_deps="zlib"
2765 magicyuv_decoder_select="llviddsp"
2766 magicyuv_encoder_select="llvidencdsp"
2767 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2768 metasound_decoder_select="lsp mdct sinewin"
2769 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2770 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2771 mjpeg_encoder_select="jpegtables mpegvideoenc"
2772 mjpegb_decoder_select="mjpeg_decoder"
2773 mlp_decoder_select="mlp_parser"
2774 mlp_encoder_select="lpc audio_frame_queue"
2775 mobiclip_decoder_select="bswapdsp golomb"
2776 motionpixels_decoder_select="bswapdsp"
2777 mp1_decoder_select="mpegaudio"
2778 mp1float_decoder_select="mpegaudio"
2779 mp2_decoder_select="mpegaudio"
2780 mp2float_decoder_select="mpegaudio"
2781 mp3_decoder_select="mpegaudio"
2782 mp3adu_decoder_select="mpegaudio"
2783 mp3adufloat_decoder_select="mpegaudio"
2784 mp3float_decoder_select="mpegaudio"
2785 mp3on4_decoder_select="mpegaudio"
2786 mp3on4float_decoder_select="mpegaudio"
2787 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2788 mpc8_decoder_select="mpegaudiodsp"
2789 mpegvideo_decoder_select="mpegvideo"
2790 mpeg1video_decoder_select="mpegvideo"
2791 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2792 mpeg2video_decoder_select="mpegvideo"
2793 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2794 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2795 mpeg4_encoder_select="h263_encoder"
2796 msa1_decoder_select="mss34dsp"
2797 mscc_decoder_deps="zlib"
2798 msmpeg4v1_decoder_select="h263_decoder"
2799 msmpeg4v2_decoder_select="h263_decoder"
2800 msmpeg4v2_encoder_select="h263_encoder"
2801 msmpeg4v3_decoder_select="h263_decoder"
2802 msmpeg4v3_encoder_select="h263_encoder"
2803 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2804 mts2_decoder_select="mss34dsp"
2805 mv30_decoder_select="aandcttables blockdsp"
2806 mvha_decoder_deps="zlib"
2807 mvha_decoder_select="llviddsp"
2808 mwsc_decoder_deps="zlib"
2809 mxpeg_decoder_select="mjpeg_decoder"
2810 nellymoser_decoder_select="mdct sinewin"
2811 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2812 notchlc_decoder_select="lzf"
2813 nuv_decoder_select="idctdsp lzo"
2814 on2avc_decoder_select="mdct"
2815 opus_decoder_deps="swresample"
2816 opus_decoder_select="mdct15"
2817 opus_encoder_select="audio_frame_queue mdct15"
2818 png_decoder_deps="zlib"
2819 png_encoder_deps="zlib"
2820 png_encoder_select="llvidencdsp"
2821 prores_decoder_select="blockdsp idctdsp"
2822 prores_encoder_select="fdctdsp"
2823 qcelp_decoder_select="lsp"
2824 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2825 ra_144_decoder_select="audiodsp"
2826 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2827 ralf_decoder_select="golomb"
2828 rasc_decoder_deps="zlib"
2829 rawvideo_decoder_select="bswapdsp"
2830 rscc_decoder_deps="zlib"
2831 rtjpeg_decoder_select="me_cmp"
2832 rv10_decoder_select="h263_decoder"
2833 rv10_encoder_select="h263_encoder"
2834 rv20_decoder_select="h263_decoder"
2835 rv20_encoder_select="h263_encoder"
2836 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2837 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2838 screenpresso_decoder_deps="zlib"
2839 shorten_decoder_select="bswapdsp"
2840 sipr_decoder_select="lsp"
2841 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2842 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2843 sonic_decoder_select="golomb rangecoder"
2844 sonic_encoder_select="golomb rangecoder"
2845 sonic_ls_encoder_select="golomb rangecoder"
2846 sp5x_decoder_select="mjpeg_decoder"
2847 speedhq_decoder_select="mpegvideo"
2848 srgc_decoder_deps="zlib"
2849 svq1_decoder_select="hpeldsp"
2850 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2851 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2852 svq3_decoder_suggest="zlib"
2853 tak_decoder_select="audiodsp"
2854 tdsc_decoder_deps="zlib"
2855 tdsc_decoder_select="mjpeg_decoder"
2856 theora_decoder_select="vp3_decoder"
2857 thp_decoder_select="mjpeg_decoder"
2858 tiff_decoder_select="mjpeg_decoder"
2859 tiff_decoder_suggest="zlib lzma"
2860 tiff_encoder_suggest="zlib"
2861 truehd_decoder_select="mlp_parser"
2862 truehd_encoder_select="lpc audio_frame_queue"
2863 truemotion2_decoder_select="bswapdsp"
2864 truespeech_decoder_select="bswapdsp"
2865 tscc_decoder_deps="zlib"
2866 twinvq_decoder_select="mdct lsp sinewin"
2867 txd_decoder_select="texturedsp"
2868 utvideo_decoder_select="bswapdsp llviddsp"
2869 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2870 vble_decoder_select="llviddsp"
2871 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2872 vc1image_decoder_select="vc1_decoder"
2873 vorbis_decoder_select="mdct"
2874 vorbis_encoder_select="audio_frame_queue mdct"
2875 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2876 vp4_decoder_select="vp3_decoder"
2877 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2878 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2879 vp6a_decoder_select="vp6_decoder"
2880 vp6f_decoder_select="vp6_decoder"
2881 vp7_decoder_select="h264pred videodsp vp8dsp"
2882 vp8_decoder_select="h264pred videodsp vp8dsp"
2883 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2884 wcmv_decoder_deps="zlib"
2885 webp_decoder_select="vp8_decoder exif"
2886 wmalossless_decoder_select="llauddsp"
2887 wmapro_decoder_select="mdct sinewin wma_freqs"
2888 wmav1_decoder_select="mdct sinewin wma_freqs"
2889 wmav1_encoder_select="mdct sinewin wma_freqs"
2890 wmav2_decoder_select="mdct sinewin wma_freqs"
2891 wmav2_encoder_select="mdct sinewin wma_freqs"
2892 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2893 wmv1_decoder_select="h263_decoder"
2894 wmv1_encoder_select="h263_encoder"
2895 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2896 wmv2_encoder_select="h263_encoder wmv2dsp"
2897 wmv3_decoder_select="vc1_decoder"
2898 wmv3image_decoder_select="wmv3_decoder"
2899 xma1_decoder_select="wmapro_decoder"
2900 xma2_decoder_select="wmapro_decoder"
2901 ylc_decoder_select="bswapdsp"
2902 zerocodec_decoder_deps="zlib"
2903 zlib_decoder_deps="zlib"
2904 zlib_encoder_deps="zlib"
2905 zmbv_decoder_deps="zlib"
2906 zmbv_encoder_deps="zlib"
2907
2908 # hardware accelerators
2909 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2910 cuda_deps="ffnvcodec"
2911 cuvid_deps="ffnvcodec"
2912 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2913 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2914 ffnvcodec_deps_any="libdl LoadLibrary"
2915 nvdec_deps="ffnvcodec"
2916 vaapi_x11_deps="xlib"
2917 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2918 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2919 xvmc_deps="X11_extensions_XvMClib_h"
2920
2921 av1_nvdec_hwaccel_deps="nvdec CUVIDAV1PICPARAMS"
2922 av1_nvdec_hwaccel_select="av1_decoder"
2923 av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
2924 av1_vaapi_hwaccel_select="av1_decoder"
2925 h263_vaapi_hwaccel_deps="vaapi"
2926 h263_vaapi_hwaccel_select="h263_decoder"
2927 h263_videotoolbox_hwaccel_deps="videotoolbox"
2928 h263_videotoolbox_hwaccel_select="h263_decoder"
2929 h264_d3d11va_hwaccel_deps="d3d11va"
2930 h264_d3d11va_hwaccel_select="h264_decoder"
2931 h264_d3d11va2_hwaccel_deps="d3d11va"
2932 h264_d3d11va2_hwaccel_select="h264_decoder"
2933 h264_dxva2_hwaccel_deps="dxva2"
2934 h264_dxva2_hwaccel_select="h264_decoder"
2935 h264_nvdec_hwaccel_deps="nvdec"
2936 h264_nvdec_hwaccel_select="h264_decoder"
2937 h264_vaapi_hwaccel_deps="vaapi"
2938 h264_vaapi_hwaccel_select="h264_decoder"
2939 h264_vdpau_hwaccel_deps="vdpau"
2940 h264_vdpau_hwaccel_select="h264_decoder"
2941 h264_videotoolbox_hwaccel_deps="videotoolbox"
2942 h264_videotoolbox_hwaccel_select="h264_decoder"
2943 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2944 hevc_d3d11va_hwaccel_select="hevc_decoder"
2945 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2946 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2947 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2948 hevc_dxva2_hwaccel_select="hevc_decoder"
2949 hevc_nvdec_hwaccel_deps="nvdec"
2950 hevc_nvdec_hwaccel_select="hevc_decoder"
2951 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2952 hevc_vaapi_hwaccel_select="hevc_decoder"
2953 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2954 hevc_vdpau_hwaccel_select="hevc_decoder"
2955 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2956 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2957 mjpeg_nvdec_hwaccel_deps="nvdec"
2958 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2959 mjpeg_vaapi_hwaccel_deps="vaapi"
2960 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2961 mpeg_xvmc_hwaccel_deps="xvmc"
2962 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2963 mpeg1_nvdec_hwaccel_deps="nvdec"
2964 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2965 mpeg1_vdpau_hwaccel_deps="vdpau"
2966 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2967 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2968 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2969 mpeg1_xvmc_hwaccel_deps="xvmc"
2970 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2971 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2972 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2973 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2974 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2975 mpeg2_dxva2_hwaccel_deps="dxva2"
2976 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2977 mpeg2_nvdec_hwaccel_deps="nvdec"
2978 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2979 mpeg2_vaapi_hwaccel_deps="vaapi"
2980 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2981 mpeg2_vdpau_hwaccel_deps="vdpau"
2982 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2983 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2984 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2985 mpeg2_xvmc_hwaccel_deps="xvmc"
2986 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2987 mpeg4_nvdec_hwaccel_deps="nvdec"
2988 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2989 mpeg4_vaapi_hwaccel_deps="vaapi"
2990 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2991 mpeg4_vdpau_hwaccel_deps="vdpau"
2992 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2993 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2994 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2995 vc1_d3d11va_hwaccel_deps="d3d11va"
2996 vc1_d3d11va_hwaccel_select="vc1_decoder"
2997 vc1_d3d11va2_hwaccel_deps="d3d11va"
2998 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2999 vc1_dxva2_hwaccel_deps="dxva2"
3000 vc1_dxva2_hwaccel_select="vc1_decoder"
3001 vc1_nvdec_hwaccel_deps="nvdec"
3002 vc1_nvdec_hwaccel_select="vc1_decoder"
3003 vc1_vaapi_hwaccel_deps="vaapi"
3004 vc1_vaapi_hwaccel_select="vc1_decoder"
3005 vc1_vdpau_hwaccel_deps="vdpau"
3006 vc1_vdpau_hwaccel_select="vc1_decoder"
3007 vp8_nvdec_hwaccel_deps="nvdec"
3008 vp8_nvdec_hwaccel_select="vp8_decoder"
3009 vp8_vaapi_hwaccel_deps="vaapi"
3010 vp8_vaapi_hwaccel_select="vp8_decoder"
3011 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3012 vp9_d3d11va_hwaccel_select="vp9_decoder"
3013 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3014 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3015 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3016 vp9_dxva2_hwaccel_select="vp9_decoder"
3017 vp9_nvdec_hwaccel_deps="nvdec"
3018 vp9_nvdec_hwaccel_select="vp9_decoder"
3019 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3020 vp9_vaapi_hwaccel_select="vp9_decoder"
3021 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3022 vp9_vdpau_hwaccel_select="vp9_decoder"
3023 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3024 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3025 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3026 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3027 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3028 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3029
3030 # hardware-accelerated codecs
3031 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3032 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3033 omx_deps="libdl pthreads"
3034 omx_rpi_select="omx"
3035 qsv_deps="libmfx"
3036 qsvdec_select="qsv"
3037 qsvenc_select="qsv"
3038 qsvvpp_select="qsv"
3039 vaapi_encode_deps="vaapi"
3040 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3041
3042 hwupload_cuda_filter_deps="ffnvcodec"
3043 scale_npp_filter_deps="ffnvcodec libnpp"
3044 scale_cuda_filter_deps="ffnvcodec"
3045 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3046 thumbnail_cuda_filter_deps="ffnvcodec"
3047 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3048 transpose_npp_filter_deps="ffnvcodec libnpp"
3049 overlay_cuda_filter_deps="ffnvcodec"
3050 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3051
3052 amf_deps_any="libdl LoadLibrary"
3053 nvenc_deps="ffnvcodec"
3054 nvenc_deps_any="libdl LoadLibrary"
3055 nvenc_encoder_deps="nvenc"
3056
3057 aac_mf_encoder_deps="mediafoundation"
3058 ac3_mf_encoder_deps="mediafoundation"
3059 av1_cuvid_decoder_deps="cuvid CUVIDAV1PICPARAMS"
3060 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3061 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3062 h264_amf_encoder_deps="amf"
3063 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3064 h264_cuvid_decoder_deps="cuvid"
3065 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3066 h264_mediacodec_decoder_deps="mediacodec"
3067 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3068 h264_mf_encoder_deps="mediafoundation"
3069 h264_mmal_decoder_deps="mmal"
3070 h264_nvenc_encoder_deps="nvenc"
3071 h264_nvenc_encoder_select="atsc_a53"
3072 h264_omx_encoder_deps="omx"
3073 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3074 h264_qsv_encoder_select="atsc_a53 qsvenc"
3075 h264_rkmpp_decoder_deps="rkmpp"
3076 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3077 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3078 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3079 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3080 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3081 hevc_amf_encoder_deps="amf"
3082 hevc_cuvid_decoder_deps="cuvid"
3083 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3084 hevc_mediacodec_decoder_deps="mediacodec"
3085 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3086 hevc_mf_encoder_deps="mediafoundation"
3087 hevc_nvenc_encoder_deps="nvenc"
3088 hevc_nvenc_encoder_select="atsc_a53"
3089 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3090 hevc_qsv_encoder_select="hevcparse qsvenc"
3091 hevc_rkmpp_decoder_deps="rkmpp"
3092 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3093 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3094 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3095 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3096 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3097 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3098 mjpeg_cuvid_decoder_deps="cuvid"
3099 mjpeg_qsv_decoder_select="qsvdec"
3100 mjpeg_qsv_encoder_deps="libmfx"
3101 mjpeg_qsv_encoder_select="qsvenc"
3102 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3103 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3104 mp3_mf_encoder_deps="mediafoundation"
3105 mpeg1_cuvid_decoder_deps="cuvid"
3106 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3107 mpeg2_crystalhd_decoder_select="crystalhd"
3108 mpeg2_cuvid_decoder_deps="cuvid"
3109 mpeg2_mmal_decoder_deps="mmal"
3110 mpeg2_mediacodec_decoder_deps="mediacodec"
3111 mpeg2_qsv_decoder_select="qsvdec"
3112 mpeg2_qsv_encoder_select="qsvenc"
3113 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3114 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3115 mpeg4_crystalhd_decoder_select="crystalhd"
3116 mpeg4_cuvid_decoder_deps="cuvid"
3117 mpeg4_mediacodec_decoder_deps="mediacodec"
3118 mpeg4_mmal_decoder_deps="mmal"
3119 mpeg4_omx_encoder_deps="omx"
3120 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3121 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3122 msmpeg4_crystalhd_decoder_select="crystalhd"
3123 nvenc_h264_encoder_select="h264_nvenc_encoder"
3124 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3125 vc1_crystalhd_decoder_select="crystalhd"
3126 vc1_cuvid_decoder_deps="cuvid"
3127 vc1_mmal_decoder_deps="mmal"
3128 vc1_qsv_decoder_select="qsvdec"
3129 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3130 vp8_cuvid_decoder_deps="cuvid"
3131 vp8_mediacodec_decoder_deps="mediacodec"
3132 vp8_qsv_decoder_select="qsvdec"
3133 vp8_rkmpp_decoder_deps="rkmpp"
3134 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3135 vp8_vaapi_encoder_select="vaapi_encode"
3136 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3137 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3138 vp9_cuvid_decoder_deps="cuvid"
3139 vp9_mediacodec_decoder_deps="mediacodec"
3140 vp9_qsv_decoder_select="qsvdec"
3141 vp9_rkmpp_decoder_deps="rkmpp"
3142 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3143 vp9_vaapi_encoder_select="vaapi_encode"
3144 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3145 vp9_qsv_encoder_select="qsvenc"
3146 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3147 wmv3_crystalhd_decoder_select="crystalhd"
3148 av1_qsv_decoder_select="qsvdec"
3149
3150 # parsers
3151 aac_parser_select="adts_header"
3152 av1_parser_select="cbs_av1"
3153 h264_parser_select="atsc_a53 golomb h264dsp h264parse"
3154 hevc_parser_select="hevcparse"
3155 mpegaudio_parser_select="mpegaudioheader"
3156 mpegvideo_parser_select="mpegvideo"
3157 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3158 vc1_parser_select="vc1dsp"
3159
3160 # bitstream_filters
3161 aac_adtstoasc_bsf_select="adts_header"
3162 av1_frame_merge_bsf_select="cbs_av1"
3163 av1_frame_split_bsf_select="cbs_av1"
3164 av1_metadata_bsf_select="cbs_av1"
3165 eac3_core_bsf_select="ac3_parser"
3166 filter_units_bsf_select="cbs"
3167 h264_metadata_bsf_deps="const_nan"
3168 h264_metadata_bsf_select="cbs_h264"
3169 h264_redundant_pps_bsf_select="cbs_h264"
3170 hevc_metadata_bsf_select="cbs_h265"
3171 mjpeg2jpeg_bsf_select="jpegtables"
3172 mpeg2_metadata_bsf_select="cbs_mpeg2"
3173 trace_headers_bsf_select="cbs"
3174 vp9_metadata_bsf_select="cbs_vp9"
3175
3176 # external libraries
3177 aac_at_decoder_deps="audiotoolbox"
3178 aac_at_decoder_select="aac_adtstoasc_bsf"
3179 ac3_at_decoder_deps="audiotoolbox"
3180 ac3_at_decoder_select="ac3_parser"
3181 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3182 alac_at_decoder_deps="audiotoolbox"
3183 amr_nb_at_decoder_deps="audiotoolbox"
3184 avisynth_deps_any="libdl LoadLibrary"
3185 avisynth_demuxer_deps="avisynth"
3186 avisynth_demuxer_select="riffdec"
3187 eac3_at_decoder_deps="audiotoolbox"
3188 eac3_at_decoder_select="ac3_parser"
3189 gsm_ms_at_decoder_deps="audiotoolbox"
3190 ilbc_at_decoder_deps="audiotoolbox"
3191 mp1_at_decoder_deps="audiotoolbox"
3192 mp2_at_decoder_deps="audiotoolbox"
3193 mp3_at_decoder_deps="audiotoolbox"
3194 mp1_at_decoder_select="mpegaudioheader"
3195 mp2_at_decoder_select="mpegaudioheader"
3196 mp3_at_decoder_select="mpegaudioheader"
3197 pcm_alaw_at_decoder_deps="audiotoolbox"
3198 pcm_mulaw_at_decoder_deps="audiotoolbox"
3199 qdmc_decoder_select="fft"
3200 qdmc_at_decoder_deps="audiotoolbox"
3201 qdm2_at_decoder_deps="audiotoolbox"
3202 aac_at_encoder_deps="audiotoolbox"
3203 aac_at_encoder_select="audio_frame_queue"
3204 alac_at_encoder_deps="audiotoolbox"
3205 alac_at_encoder_select="audio_frame_queue"
3206 ilbc_at_encoder_deps="audiotoolbox"
3207 ilbc_at_encoder_select="audio_frame_queue"
3208 pcm_alaw_at_encoder_deps="audiotoolbox"
3209 pcm_alaw_at_encoder_select="audio_frame_queue"
3210 pcm_mulaw_at_encoder_deps="audiotoolbox"
3211 pcm_mulaw_at_encoder_select="audio_frame_queue"
3212 chromaprint_muxer_deps="chromaprint"
3213 h264_videotoolbox_encoder_deps="pthreads"
3214 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3215 hevc_videotoolbox_encoder_deps="pthreads"
3216 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3217 libaom_av1_decoder_deps="libaom"
3218 libaom_av1_encoder_deps="libaom"
3219 libaom_av1_encoder_select="extract_extradata_bsf"
3220 libaribb24_decoder_deps="libaribb24"
3221 libcelt_decoder_deps="libcelt"
3222 libcodec2_decoder_deps="libcodec2"
3223 libcodec2_encoder_deps="libcodec2"
3224 libdav1d_decoder_deps="libdav1d"
3225 libdav1d_decoder_select="atsc_a53"
3226 libdavs2_decoder_deps="libdavs2"
3227 libfdk_aac_decoder_deps="libfdk_aac"
3228 libfdk_aac_encoder_deps="libfdk_aac"
3229 libfdk_aac_encoder_select="audio_frame_queue"
3230 libgme_demuxer_deps="libgme"
3231 libgsm_decoder_deps="libgsm"
3232 libgsm_encoder_deps="libgsm"
3233 libgsm_ms_decoder_deps="libgsm"
3234 libgsm_ms_encoder_deps="libgsm"
3235 libilbc_decoder_deps="libilbc"
3236 libilbc_encoder_deps="libilbc"
3237 libkvazaar_encoder_deps="libkvazaar"
3238 libmodplug_demuxer_deps="libmodplug"
3239 libmp3lame_encoder_deps="libmp3lame"
3240 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3241 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3242 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3243 libopencore_amrnb_encoder_select="audio_frame_queue"
3244 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3245 libopenh264_decoder_deps="libopenh264"
3246 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3247 libopenh264_encoder_deps="libopenh264"
3248 libopenjpeg_decoder_deps="libopenjpeg"
3249 libopenjpeg_encoder_deps="libopenjpeg"
3250 libopenmpt_demuxer_deps="libopenmpt"
3251 libopus_decoder_deps="libopus"
3252 libopus_encoder_deps="libopus"
3253 libopus_encoder_select="audio_frame_queue"
3254 librav1e_encoder_deps="librav1e"
3255 librav1e_encoder_select="extract_extradata_bsf"
3256 librsvg_decoder_deps="librsvg"
3257 libshine_encoder_deps="libshine"
3258 libshine_encoder_select="audio_frame_queue"
3259 libspeex_decoder_deps="libspeex"
3260 libspeex_encoder_deps="libspeex"
3261 libspeex_encoder_select="audio_frame_queue"
3262 libsvtav1_encoder_deps="libsvtav1"
3263 libtheora_encoder_deps="libtheora"
3264 libtwolame_encoder_deps="libtwolame"
3265 libuavs3d_decoder_deps="libuavs3d"
3266 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3267 libvorbis_decoder_deps="libvorbis"
3268 libvorbis_encoder_deps="libvorbis libvorbisenc"
3269 libvorbis_encoder_select="audio_frame_queue"
3270 libvpx_vp8_decoder_deps="libvpx"
3271 libvpx_vp8_encoder_deps="libvpx"
3272 libvpx_vp9_decoder_deps="libvpx"
3273 libvpx_vp9_encoder_deps="libvpx"
3274 libwebp_encoder_deps="libwebp"
3275 libwebp_anim_encoder_deps="libwebp"
3276 libx262_encoder_deps="libx262"
3277 libx264_encoder_deps="libx264"
3278 libx264_encoder_select="atsc_a53"
3279 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3280 libx264rgb_encoder_select="libx264_encoder"
3281 libx265_encoder_deps="libx265"
3282 libxavs_encoder_deps="libxavs"
3283 libxavs2_encoder_deps="libxavs2"
3284 libxvid_encoder_deps="libxvid"
3285 libzvbi_teletext_decoder_deps="libzvbi"
3286 vapoursynth_demuxer_deps="vapoursynth"
3287 videotoolbox_suggest="coreservices"
3288 videotoolbox_deps="corefoundation coremedia corevideo"
3289 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3290
3291 # demuxers / muxers
3292 ac3_demuxer_select="ac3_parser"
3293 act_demuxer_select="riffdec"
3294 aiff_muxer_select="iso_media"
3295 asf_demuxer_select="riffdec"
3296 asf_o_demuxer_select="riffdec"
3297 asf_muxer_select="riffenc"
3298 asf_stream_muxer_select="asf_muxer"
3299 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3300 avi_demuxer_select="iso_media riffdec exif"
3301 avi_muxer_select="riffenc"
3302 caf_demuxer_select="iso_media riffdec"
3303 caf_muxer_select="iso_media"
3304 dash_muxer_select="mp4_muxer"
3305 dash_demuxer_deps="libxml2"
3306 dirac_demuxer_select="dirac_parser"
3307 dts_demuxer_select="dca_parser"
3308 dtshd_demuxer_select="dca_parser"
3309 dv_demuxer_select="dvprofile"
3310 dv_muxer_select="dvprofile"
3311 dxa_demuxer_select="riffdec"
3312 eac3_demuxer_select="ac3_parser"
3313 f4v_muxer_select="mov_muxer"
3314 fifo_muxer_deps="threads"
3315 flac_demuxer_select="flac_parser"
3316 flv_muxer_select="aac_adtstoasc_bsf"
3317 gxf_muxer_select="pcm_rechunk_bsf"
3318 hds_muxer_select="flv_muxer"
3319 hls_muxer_select="mpegts_muxer"
3320 hls_muxer_suggest="gcrypt openssl"
3321 image2_alias_pix_demuxer_select="image2_demuxer"
3322 image2_brender_pix_demuxer_select="image2_demuxer"
3323 ipod_muxer_select="mov_muxer"
3324 ismv_muxer_select="mov_muxer"
3325 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3326 latm_muxer_select="aac_adtstoasc_bsf"
3327 matroska_audio_muxer_select="matroska_muxer"
3328 matroska_demuxer_select="iso_media riffdec"
3329 matroska_demuxer_suggest="bzlib lzo zlib"
3330 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3331 mlp_demuxer_select="mlp_parser"
3332 mmf_muxer_select="riffenc"
3333 mov_demuxer_select="iso_media riffdec"
3334 mov_demuxer_suggest="zlib"
3335 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3336 mp3_demuxer_select="mpegaudio_parser"
3337 mp3_muxer_select="mpegaudioheader"
3338 mp4_muxer_select="mov_muxer"
3339 mpegts_demuxer_select="iso_media"
3340 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3341 mpegtsraw_demuxer_select="mpegts_demuxer"
3342 mxf_muxer_select="golomb pcm_rechunk_bsf"
3343 mxf_d10_muxer_select="mxf_muxer"
3344 mxf_opatom_muxer_select="mxf_muxer"
3345 nut_muxer_select="riffenc"
3346 nuv_demuxer_select="riffdec"
3347 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3348 oga_muxer_select="ogg_muxer"
3349 ogg_demuxer_select="dirac_parse"
3350 ogv_muxer_select="ogg_muxer"
3351 opus_muxer_select="ogg_muxer"
3352 psp_muxer_select="mov_muxer"
3353 rtp_demuxer_select="sdp_demuxer"
3354 rtp_muxer_select="golomb jpegtables"
3355 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3356 rtsp_demuxer_select="http_protocol rtpdec"
3357 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3358 sap_demuxer_select="sdp_demuxer"
3359 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3360 sdp_demuxer_select="rtpdec"
3361 smoothstreaming_muxer_select="ismv_muxer"
3362 spdif_demuxer_select="adts_header"
3363 spdif_muxer_select="adts_header"
3364 spx_muxer_select="ogg_muxer"
3365 swf_demuxer_suggest="zlib"
3366 tak_demuxer_select="tak_parser"
3367 truehd_demuxer_select="mlp_parser"
3368 tg2_muxer_select="mov_muxer"
3369 tgp_muxer_select="mov_muxer"
3370 vobsub_demuxer_select="mpegps_demuxer"
3371 w64_demuxer_select="wav_demuxer"
3372 w64_muxer_select="wav_muxer"
3373 wav_demuxer_select="riffdec"
3374 wav_muxer_select="riffenc"
3375 webm_chunk_muxer_select="webm_muxer"
3376 webm_muxer_select="iso_media riffenc"
3377 webm_dash_manifest_demuxer_select="matroska_demuxer"
3378 wtv_demuxer_select="mpegts_demuxer riffdec"
3379 wtv_muxer_select="mpegts_muxer riffenc"
3380 xmv_demuxer_select="riffdec"
3381 xwma_demuxer_select="riffdec"
3382
3383 # indevs / outdevs
3384 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3385 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3386 alsa_indev_deps="alsa"
3387 alsa_outdev_deps="alsa"
3388 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3389 avfoundation_indev_suggest="coregraphics applicationservices"
3390 avfoundation_indev_extralibs="-framework Foundation"
3391 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3392 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3393 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3394 caca_outdev_deps="libcaca"
3395 decklink_deps_any="libdl LoadLibrary"
3396 decklink_indev_deps="decklink threads"
3397 decklink_indev_extralibs="-lstdc++"
3398 decklink_outdev_deps="decklink threads"
3399 decklink_outdev_suggest="libklvanc"
3400 decklink_outdev_extralibs="-lstdc++"
3401 dshow_indev_deps="IBaseFilter"
3402 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3403 fbdev_indev_deps="linux_fb_h"
3404 fbdev_outdev_deps="linux_fb_h"
3405 gdigrab_indev_deps="CreateDIBSection"
3406 gdigrab_indev_extralibs="-lgdi32"
3407 gdigrab_indev_select="bmp_decoder"
3408 iec61883_indev_deps="libiec61883"
3409 jack_indev_deps="libjack"
3410 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3411 kmsgrab_indev_deps="libdrm"
3412 lavfi_indev_deps="avfilter"
3413 libcdio_indev_deps="libcdio"
3414 libdc1394_indev_deps="libdc1394"
3415 openal_indev_deps="openal"
3416 opengl_outdev_deps="opengl"
3417 opengl_outdev_suggest="sdl2"
3418 oss_indev_deps_any="sys_soundcard_h"
3419 oss_outdev_deps_any="sys_soundcard_h"
3420 pulse_indev_deps="libpulse"
3421 pulse_outdev_deps="libpulse"
3422 sdl2_outdev_deps="sdl2"
3423 sndio_indev_deps="sndio"
3424 sndio_outdev_deps="sndio"
3425 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3426 v4l2_indev_suggest="libv4l2"
3427 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3428 v4l2_outdev_suggest="libv4l2"
3429 vfwcap_indev_deps="vfw32 vfwcap_defines"
3430 xcbgrab_indev_deps="libxcb"
3431 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3432 xv_outdev_deps="xlib"
3433
3434 # protocols
3435 async_protocol_deps="threads"
3436 bluray_protocol_deps="libbluray"
3437 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3438 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3439 ffrtmpcrypt_protocol_select="tcp_protocol"
3440 ffrtmphttp_protocol_conflict="librtmp_protocol"
3441 ffrtmphttp_protocol_select="http_protocol"
3442 ftp_protocol_select="tcp_protocol"
3443 gopher_protocol_select="network"
3444 http_protocol_select="tcp_protocol"
3445 http_protocol_suggest="zlib"
3446 httpproxy_protocol_select="tcp_protocol"
3447 httpproxy_protocol_suggest="zlib"
3448 https_protocol_select="tls_protocol"
3449 https_protocol_suggest="zlib"
3450 icecast_protocol_select="http_protocol"
3451 mmsh_protocol_select="http_protocol"
3452 mmst_protocol_select="network"
3453 rtmp_protocol_conflict="librtmp_protocol"
3454 rtmp_protocol_select="tcp_protocol"
3455 rtmp_protocol_suggest="zlib"
3456 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3457 rtmpe_protocol_suggest="zlib"
3458 rtmps_protocol_conflict="librtmp_protocol"
3459 rtmps_protocol_select="tls_protocol"
3460 rtmps_protocol_suggest="zlib"
3461 rtmpt_protocol_select="ffrtmphttp_protocol"
3462 rtmpt_protocol_suggest="zlib"
3463 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3464 rtmpte_protocol_suggest="zlib"
3465 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3466 rtmpts_protocol_suggest="zlib"
3467 rtp_protocol_select="udp_protocol"
3468 schannel_conflict="openssl gnutls libtls mbedtls"
3469 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3470 sctp_protocol_select="network"
3471 securetransport_conflict="openssl gnutls libtls mbedtls"
3472 srtp_protocol_select="rtp_protocol srtp"
3473 tcp_protocol_select="network"
3474 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3475 tls_protocol_select="tcp_protocol"
3476 udp_protocol_select="network"
3477 udplite_protocol_select="network"
3478 unix_protocol_deps="sys_un_h"
3479 unix_protocol_select="network"
3480
3481 # external library protocols
3482 libamqp_protocol_deps="librabbitmq"
3483 libamqp_protocol_select="network"
3484 librtmp_protocol_deps="librtmp"
3485 librtmpe_protocol_deps="librtmp"
3486 librtmps_protocol_deps="librtmp"
3487 librtmpt_protocol_deps="librtmp"
3488 librtmpte_protocol_deps="librtmp"
3489 libsmbclient_protocol_deps="libsmbclient gplv3"
3490 libsrt_protocol_deps="libsrt"
3491 libsrt_protocol_select="network"
3492 libssh_protocol_deps="libssh"
3493 libtls_conflict="openssl gnutls mbedtls"
3494 libzmq_protocol_deps="libzmq"
3495 libzmq_protocol_select="network"
3496
3497 # filters
3498 afftdn_filter_deps="avcodec"
3499 afftdn_filter_select="fft"
3500 afftfilt_filter_deps="avcodec"
3501 afftfilt_filter_select="fft"
3502 afir_filter_deps="avcodec"
3503 afir_filter_select="rdft"
3504 amovie_filter_deps="avcodec avformat"
3505 aresample_filter_deps="swresample"
3506 asoftclip_filter_deps="swresample"
3507 asr_filter_deps="pocketsphinx"
3508 ass_filter_deps="libass"
3509 atempo_filter_deps="avcodec"
3510 atempo_filter_select="rdft"
3511 avgblur_opencl_filter_deps="opencl"
3512 avgblur_vulkan_filter_deps="vulkan libglslang"
3513 azmq_filter_deps="libzmq"
3514 blackframe_filter_deps="gpl"
3515 bm3d_filter_deps="avcodec"
3516 bm3d_filter_select="dct"
3517 boxblur_filter_deps="gpl"
3518 boxblur_opencl_filter_deps="opencl gpl"
3519 bs2b_filter_deps="libbs2b"
3520 chromaber_vulkan_filter_deps="vulkan libglslang"
3521 colorkey_opencl_filter_deps="opencl"
3522 colormatrix_filter_deps="gpl"
3523 convolution_opencl_filter_deps="opencl"
3524 convolve_filter_deps="avcodec"
3525 convolve_filter_select="fft"
3526 coreimage_filter_deps="coreimage appkit"
3527 coreimage_filter_extralibs="-framework OpenGL"
3528 coreimagesrc_filter_deps="coreimage appkit"
3529 coreimagesrc_filter_extralibs="-framework OpenGL"
3530 cover_rect_filter_deps="avcodec avformat gpl"
3531 cropdetect_filter_deps="gpl"
3532 deconvolve_filter_deps="avcodec"
3533 deconvolve_filter_select="fft"
3534 deinterlace_qsv_filter_deps="libmfx"
3535 deinterlace_vaapi_filter_deps="vaapi"
3536 delogo_filter_deps="gpl"
3537 denoise_vaapi_filter_deps="vaapi"
3538 derain_filter_select="dnn"
3539 deshake_filter_select="pixelutils"
3540 deshake_opencl_filter_deps="opencl"
3541 dilation_opencl_filter_deps="opencl"
3542 dnn_processing_filter_select="dnn"
3543 drawtext_filter_deps="libfreetype"
3544 drawtext_filter_suggest="libfontconfig libfribidi"
3545 elbg_filter_deps="avcodec"
3546 eq_filter_deps="gpl"
3547 erosion_opencl_filter_deps="opencl"
3548 fftfilt_filter_deps="avcodec"
3549 fftfilt_filter_select="rdft"
3550 fftdnoiz_filter_deps="avcodec"
3551 fftdnoiz_filter_select="fft"
3552 find_rect_filter_deps="avcodec avformat gpl"
3553 firequalizer_filter_deps="avcodec"
3554 firequalizer_filter_select="rdft"
3555 flite_filter_deps="libflite"
3556 framerate_filter_select="scene_sad"
3557 freezedetect_filter_select="scene_sad"
3558 frei0r_filter_deps="frei0r libdl"
3559 frei0r_src_filter_deps="frei0r libdl"
3560 fspp_filter_deps="gpl"
3561 headphone_filter_select="fft"
3562 histeq_filter_deps="gpl"
3563 hqdn3d_filter_deps="gpl"
3564 interlace_filter_deps="gpl"
3565 kerndeint_filter_deps="gpl"
3566 ladspa_filter_deps="ladspa libdl"
3567 lensfun_filter_deps="liblensfun version3"
3568 lv2_filter_deps="lv2"
3569 mcdeint_filter_deps="avcodec gpl"
3570 movie_filter_deps="avcodec avformat"
3571 mpdecimate_filter_deps="gpl"
3572 mpdecimate_filter_select="pixelutils"
3573 minterpolate_filter_select="scene_sad"
3574 mptestsrc_filter_deps="gpl"
3575 negate_filter_deps="lut_filter"
3576 nlmeans_opencl_filter_deps="opencl"
3577 nnedi_filter_deps="gpl"
3578 ocr_filter_deps="libtesseract"
3579 ocv_filter_deps="libopencv"
3580 openclsrc_filter_deps="opencl"
3581 overlay_opencl_filter_deps="opencl"
3582 overlay_qsv_filter_deps="libmfx"
3583 overlay_qsv_filter_select="qsvvpp"
3584 overlay_vulkan_filter_deps="vulkan libglslang"
3585 owdenoise_filter_deps="gpl"
3586 pad_opencl_filter_deps="opencl"
3587 pan_filter_deps="swresample"
3588 perspective_filter_deps="gpl"
3589 phase_filter_deps="gpl"
3590 pp7_filter_deps="gpl"
3591 pp_filter_deps="gpl postproc"
3592 prewitt_opencl_filter_deps="opencl"
3593 procamp_vaapi_filter_deps="vaapi"
3594 program_opencl_filter_deps="opencl"
3595 pullup_filter_deps="gpl"
3596 removelogo_filter_deps="avcodec avformat swscale"
3597 repeatfields_filter_deps="gpl"
3598 resample_filter_deps="avresample"
3599 roberts_opencl_filter_deps="opencl"
3600 rubberband_filter_deps="librubberband"
3601 sab_filter_deps="gpl swscale"
3602 scale2ref_filter_deps="swscale"
3603 scale_filter_deps="swscale"
3604 scale_qsv_filter_deps="libmfx"
3605 scdet_filter_select="scene_sad"
3606 select_filter_select="scene_sad"
3607 sharpness_vaapi_filter_deps="vaapi"
3608 showcqt_filter_deps="avcodec avformat swscale"
3609 showcqt_filter_suggest="libfontconfig libfreetype"
3610 showcqt_filter_select="fft"
3611 showfreqs_filter_deps="avcodec"
3612 showfreqs_filter_select="fft"
3613 showspatial_filter_select="fft"
3614 showspectrum_filter_deps="avcodec"
3615 showspectrum_filter_select="fft"
3616 showspectrumpic_filter_deps="avcodec"
3617 showspectrumpic_filter_select="fft"
3618 signature_filter_deps="gpl avcodec avformat"
3619 sinc_filter_select="rdft"
3620 smartblur_filter_deps="gpl swscale"
3621 sobel_opencl_filter_deps="opencl"
3622 sofalizer_filter_deps="libmysofa avcodec"
3623 sofalizer_filter_select="fft"
3624 spectrumsynth_filter_deps="avcodec"
3625 spectrumsynth_filter_select="fft"
3626 spp_filter_deps="gpl avcodec"
3627 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3628 sr_filter_deps="avformat swscale"
3629 sr_filter_select="dnn"
3630 stereo3d_filter_deps="gpl"
3631 subtitles_filter_deps="avformat avcodec libass"
3632 super2xsai_filter_deps="gpl"
3633 pixfmts_super2xsai_test_deps="super2xsai_filter"
3634 superequalizer_filter_select="rdft"
3635 surround_filter_select="rdft"
3636 tinterlace_filter_deps="gpl"
3637 tinterlace_merge_test_deps="tinterlace_filter"
3638 tinterlace_pad_test_deps="tinterlace_filter"
3639 tonemap_filter_deps="const_nan"
3640 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3641 tonemap_opencl_filter_deps="opencl const_nan"
3642 transpose_opencl_filter_deps="opencl"
3643 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3644 unsharp_opencl_filter_deps="opencl"
3645 uspp_filter_deps="gpl avcodec"
3646 vaguedenoiser_filter_deps="gpl"
3647 vidstabdetect_filter_deps="libvidstab"
3648 vidstabtransform_filter_deps="libvidstab"
3649 libvmaf_filter_deps="libvmaf pthreads"
3650 zmq_filter_deps="libzmq"
3651 zoompan_filter_deps="swscale"
3652 zscale_filter_deps="libzimg const_nan"
3653 scale_vaapi_filter_deps="vaapi"
3654 scale_vulkan_filter_deps="vulkan libglslang"
3655 vpp_qsv_filter_deps="libmfx"
3656 vpp_qsv_filter_select="qsvvpp"
3657 xfade_opencl_filter_deps="opencl"
3658 yadif_cuda_filter_deps="ffnvcodec"
3659 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3660
3661 # examples
3662 avio_list_dir_deps="avformat avutil"
3663 avio_reading_deps="avformat avcodec avutil"
3664 decode_audio_example_deps="avcodec avutil"
3665 decode_video_example_deps="avcodec avutil"
3666 demuxing_decoding_example_deps="avcodec avformat avutil"
3667 encode_audio_example_deps="avcodec avutil"
3668 encode_video_example_deps="avcodec avutil"
3669 extract_mvs_example_deps="avcodec avformat avutil"
3670 filter_audio_example_deps="avfilter avutil"
3671 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3672 filtering_video_example_deps="avfilter avcodec avformat avutil"
3673 http_multiclient_example_deps="avformat avutil fork"
3674 hw_decode_example_deps="avcodec avformat avutil"
3675 metadata_example_deps="avformat avutil"
3676 muxing_example_deps="avcodec avformat avutil swscale"
3677 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3678 remuxing_example_deps="avcodec avformat avutil"
3679 resampling_audio_example_deps="avutil swresample"
3680 scaling_video_example_deps="avutil swscale"
3681 transcode_aac_example_deps="avcodec avformat swresample"
3682 transcoding_example_deps="avfilter avcodec avformat avutil"
3683 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3684 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3685
3686 # EXTRALIBS_LIST
3687 cpu_init_extralibs="pthreads_extralibs"
3688 cws2fws_extralibs="zlib_extralibs"
3689
3690 # libraries, in any order
3691 avcodec_deps="avutil"
3692 avcodec_suggest="libm"
3693 avcodec_select="null_bsf"
3694 avdevice_deps="avformat avcodec avutil"
3695 avdevice_suggest="libm"
3696 avfilter_deps="avutil"
3697 avfilter_suggest="libm"
3698 avformat_deps="avcodec avutil"
3699 avformat_suggest="libm network zlib"
3700 avresample_deps="avutil"
3701 avresample_suggest="libm"
3702 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3703 postproc_deps="avutil gpl"
3704 postproc_suggest="libm"
3705 swresample_deps="avutil"
3706 swresample_suggest="libm libsoxr"
3707 swscale_deps="avutil"
3708 swscale_suggest="libm"
3709
3710 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3711 avfilter_extralibs="pthreads_extralibs"
3712 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3713
3714 # programs
3715 ffmpeg_deps="avcodec avfilter avformat"
3716 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3717                hflip_filter null_filter
3718                transpose_filter trim_filter vflip_filter"
3719 ffmpeg_suggest="ole32 psapi shell32"
3720 ffplay_deps="avcodec avformat swscale swresample sdl2"
3721 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3722 ffplay_suggest="shell32"
3723 ffprobe_deps="avcodec avformat"
3724 ffprobe_suggest="shell32"
3725
3726 # documentation
3727 podpages_deps="perl"
3728 manpages_deps="perl pod2man"
3729 htmlpages_deps="perl"
3730 htmlpages_deps_any="makeinfo_html texi2html"
3731 txtpages_deps="perl makeinfo"
3732 doc_deps_any="manpages htmlpages podpages txtpages"
3733
3734 # default parameters
3735
3736 logfile="ffbuild/config.log"
3737
3738 # installation paths
3739 prefix_default="/usr/local"
3740 bindir_default='${prefix}/bin'
3741 datadir_default='${prefix}/share/ffmpeg'
3742 docdir_default='${prefix}/share/doc/ffmpeg'
3743 incdir_default='${prefix}/include'
3744 libdir_default='${prefix}/lib'
3745 mandir_default='${prefix}/share/man'
3746
3747 # toolchain
3748 ar_default="ar"
3749 cc_default="gcc"
3750 cxx_default="g++"
3751 host_cc_default="gcc"
3752 doxygen_default="doxygen"
3753 install="install"
3754 ln_s_default="ln -s -f"
3755 nm_default="nm -g"
3756 pkg_config_default=pkg-config
3757 ranlib_default="ranlib"
3758 strip_default="strip"
3759 version_script='--version-script'
3760 objformat="elf32"
3761 x86asmexe_default="nasm"
3762 windres_default="windres"
3763 striptype="direct"
3764
3765 # OS
3766 target_os_default=$(tolower $(uname -s))
3767 host_os=$target_os_default
3768
3769 # machine
3770 if test "$target_os_default" = aix; then
3771     arch_default=$(uname -p)
3772     strip_default="strip -X32_64"
3773     nm_default="nm -g -X32_64"
3774 else
3775     arch_default=$(uname -m)
3776 fi
3777 cpu="generic"
3778 intrinsics="none"
3779
3780 # configurable options
3781 enable $PROGRAM_LIST
3782 enable $DOCUMENT_LIST
3783 enable $EXAMPLE_LIST
3784 enable $(filter_out avresample $LIBRARY_LIST)
3785 enable stripping
3786
3787 enable asm
3788 enable debug
3789 enable doc
3790 enable faan faandct faanidct
3791 enable large_tests
3792 enable optimizations
3793 enable runtime_cpudetect
3794 enable safe_bitstream_reader
3795 enable static
3796 enable swscale_alpha
3797 enable valgrind_backtrace
3798
3799 sws_max_filter_size_default=256
3800 set_default sws_max_filter_size
3801
3802 # internal components are enabled by default
3803 enable $EXTRALIBS_LIST
3804
3805 # Avoid external, non-system, libraries getting enabled by dependency resolution
3806 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3807
3808 # build settings
3809 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3810 LIBPREF="lib"
3811 LIBSUF=".a"
3812 FULLNAME='$(NAME)$(BUILDSUF)'
3813 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3814 SLIBPREF="lib"
3815 SLIBSUF=".so"
3816 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3817 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3818 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3819 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3820 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3821 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3822 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3823
3824 asflags_filter=echo
3825 cflags_filter=echo
3826 ldflags_filter=echo
3827
3828 AS_C='-c'
3829 AS_O='-o $@'
3830 CC_C='-c'
3831 CC_E='-E -o $@'
3832 CC_O='-o $@'
3833 CXX_C='-c'
3834 CXX_O='-o $@'
3835 OBJCC_C='-c'
3836 OBJCC_E='-E -o $@'
3837 OBJCC_O='-o $@'
3838 X86ASM_O='-o $@'
3839 LD_O='-o $@'
3840 LD_LIB='-l%'
3841 LD_PATH='-L'
3842 HOSTCC_C='-c'
3843 HOSTCC_E='-E -o $@'
3844 HOSTCC_O='-o $@'
3845 HOSTLD_O='-o $@'
3846 NVCC_C='-c'
3847 NVCC_O='-o $@'
3848
3849 host_extralibs='-lm'
3850 host_cflags_filter=echo
3851 host_ldflags_filter=echo
3852
3853 target_path='$(CURDIR)'
3854
3855 # since the object filename is not given with the -MM flag, the compiler
3856 # is only able to print the basename, and we must add the path ourselves
3857 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3858 DEPFLAGS='-MM'
3859
3860 mkdir -p ffbuild
3861
3862 # find source path
3863 if test -f configure; then
3864     source_path=.
3865 elif test -f src/configure; then
3866     source_path=src
3867 else
3868     source_path=$(cd $(dirname "$0"); pwd)
3869     case "$source_path" in
3870         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3871     esac
3872     test -e "$source_path/config.h" &&
3873         die "Out of tree builds are impossible with config.h in source dir."
3874 fi
3875
3876 for v in "$@"; do
3877     r=${v#*=}
3878     l=${v%"$r"}
3879     r=$(sh_quote "$r")
3880     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3881 done
3882
3883 find_things_extern(){
3884     thing=$1
3885     pattern=$2
3886     file=$source_path/$3
3887     out=${4:-$thing}
3888     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3889 }
3890
3891 find_filters_extern(){
3892     file=$source_path/$1
3893     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3894 }
3895
3896 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3897 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3898 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3899 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3900 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3901 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3902 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3903 CODEC_LIST="
3904     $ENCODER_LIST
3905     $DECODER_LIST
3906 "
3907 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3908 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3909 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3910 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3911
3912 AVCODEC_COMPONENTS_LIST="
3913     $BSF_LIST
3914     $DECODER_LIST
3915     $ENCODER_LIST
3916     $HWACCEL_LIST
3917     $PARSER_LIST
3918 "
3919
3920 AVDEVICE_COMPONENTS_LIST="
3921     $INDEV_LIST
3922     $OUTDEV_LIST
3923 "
3924
3925 AVFILTER_COMPONENTS_LIST="
3926     $FILTER_LIST
3927 "
3928
3929 AVFORMAT_COMPONENTS_LIST="
3930     $DEMUXER_LIST
3931     $MUXER_LIST
3932     $PROTOCOL_LIST
3933 "
3934
3935 ALL_COMPONENTS="
3936     $AVCODEC_COMPONENTS_LIST
3937     $AVDEVICE_COMPONENTS_LIST
3938     $AVFILTER_COMPONENTS_LIST
3939     $AVFORMAT_COMPONENTS_LIST
3940 "
3941
3942 for n in $COMPONENT_LIST; do
3943     v=$(toupper ${n%s})_LIST
3944     eval enable \$$v
3945     eval ${n}_if_any="\$$v"
3946 done
3947
3948 enable $ARCH_EXT_LIST
3949
3950 die_unknown(){
3951     echo "Unknown option \"$1\"."
3952     echo "See $0 --help for available options."
3953     exit 1
3954 }
3955
3956 print_in_columns() {
3957     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3958     {
3959         num_cols = width > col_width ? int(width / col_width) : 1;
3960         num_rows = int((NF + num_cols-1) / num_cols);
3961         y = x = 1;
3962         for (y = 1; y <= num_rows; y++) {
3963             i = y;
3964             for (x = 1; x <= num_cols; x++) {
3965                 if (i <= NF) {
3966                   line = sprintf("%s%-" col_width "s", line, $i);
3967                 }
3968                 i = i + num_rows;
3969             }
3970             print line; line = "";
3971         }
3972     }' | sed 's/ *$//'
3973 }
3974
3975 show_list() {
3976     suffix=_$1
3977     shift
3978     echo $* | sed s/$suffix//g | print_in_columns
3979     exit 0
3980 }
3981
3982 rand_list(){
3983     IFS=', '
3984     set -- $*
3985     unset IFS
3986     for thing; do
3987         comp=${thing%:*}
3988         prob=${thing#$comp}
3989         prob=${prob#:}
3990         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3991         echo "prob ${prob:-0.5}"
3992         printf '%s\n' $comp
3993     done
3994 }
3995
3996 do_random(){
3997     action=$1
3998     shift
3999     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
4000     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
4001 }
4002
4003 for opt do
4004     optval="${opt#*=}"
4005     case "$opt" in
4006         --extra-ldflags=*)
4007             add_ldflags $optval
4008         ;;
4009         --extra-ldexeflags=*)
4010             add_ldexeflags $optval
4011         ;;
4012         --extra-ldsoflags=*)
4013             add_ldsoflags $optval
4014         ;;
4015         --extra-ldlibflags=*)
4016             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4017                  "removed in the future. Use --extra-ldsoflags instead."
4018             add_ldsoflags $optval
4019         ;;
4020         --extra-libs=*)
4021             add_extralibs $optval
4022         ;;
4023         --disable-devices)
4024             disable $INDEV_LIST $OUTDEV_LIST
4025         ;;
4026         --enable-debug=*)
4027             debuglevel="$optval"
4028         ;;
4029         --disable-programs)
4030             disable $PROGRAM_LIST
4031         ;;
4032         --disable-everything)
4033             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4034         ;;
4035         --disable-all)
4036             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4037             disable $LIBRARY_LIST $PROGRAM_LIST doc
4038             enable avutil
4039         ;;
4040         --enable-random|--disable-random)
4041             action=${opt%%-random}
4042             do_random ${action#--} $COMPONENT_LIST
4043         ;;
4044         --enable-random=*|--disable-random=*)
4045             action=${opt%%-random=*}
4046             do_random ${action#--} $optval
4047         ;;
4048         --enable-sdl)
4049             enable sdl2
4050         ;;
4051         --enable-*=*|--disable-*=*)
4052             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4053             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4054             eval list=\$$(toupper $thing)_LIST
4055             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4056             list=$(filter "$name" $list)
4057             [ "$list" = "" ] && warn "Option $opt did not match anything"
4058             test $action = enable && warn_if_gets_disabled $list
4059             $action $list
4060         ;;
4061         --enable-yasm|--disable-yasm)
4062             warn "The ${opt} option is only provided for compatibility and will be\n"\
4063                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4064             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4065         ;;
4066         --yasmexe=*)
4067             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4068                  "removed in the future. Use --x86asmexe instead."
4069             x86asmexe="$optval"
4070         ;;
4071         --enable-?*|--disable-?*)
4072             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4073             if is_in $option $COMPONENT_LIST; then
4074                 test $action = disable && action=unset
4075                 eval $action \$$(toupper ${option%s})_LIST
4076             elif is_in $option $CMDLINE_SELECT; then
4077                 $action $option
4078             else
4079                 die_unknown $opt
4080             fi
4081         ;;
4082         --list-*)
4083             NAME="${opt#--list-}"
4084             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4085             NAME=${NAME%s}
4086             eval show_list $NAME \$$(toupper $NAME)_LIST
4087         ;;
4088         --help|-h) show_help
4089         ;;
4090         --quiet|-q) quiet=yes
4091         ;;
4092         --fatal-warnings) enable fatal_warnings
4093         ;;
4094         --libfuzzer=*)
4095             libfuzzer_path="$optval"
4096         ;;
4097         *)
4098             optname="${opt%%=*}"
4099             optname="${optname#--}"
4100             optname=$(echo "$optname" | sed 's/-/_/g')
4101             if is_in $optname $CMDLINE_SET; then
4102                 eval $optname='$optval'
4103             elif is_in $optname $CMDLINE_APPEND; then
4104                 append $optname "$optval"
4105             else
4106                 die_unknown $opt
4107             fi
4108         ;;
4109     esac
4110 done
4111
4112 for e in $env; do
4113     eval "export $e"
4114 done
4115
4116 if disabled autodetect; then
4117
4118     # Unless iconv is explicitely disabled by the user, we still want to probe
4119     # for the iconv from the libc.
4120     disabled iconv || enable libc_iconv
4121
4122     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4123     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4124 fi
4125 # Mark specifically enabled, but normally autodetected libraries as requested.
4126 for lib in $AUTODETECT_LIBS; do
4127     enabled $lib && request $lib
4128 done
4129 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4130 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4131 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4132
4133 disabled logging && logfile=/dev/null
4134
4135 # command line configuration sanity checks
4136
4137 # we need to build at least one lib type
4138 if ! enabled_any static shared; then
4139     cat <<EOF
4140 At least one library type must be built.
4141 Specify --enable-static to build the static libraries or --enable-shared to
4142 build the shared libraries as well. To only build the shared libraries specify
4143 --disable-static in addition to --enable-shared.
4144 EOF
4145     exit 1
4146 fi
4147
4148 die_license_disabled() {
4149     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4150 }
4151
4152 die_license_disabled_gpl() {
4153     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4154 }
4155
4156 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4157 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4158
4159 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4160 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4161
4162 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4163
4164 if enabled nonfree; then
4165     license="nonfree and unredistributable"
4166 elif enabled gplv3; then
4167     license="GPL version 3 or later"
4168 elif enabled lgplv3; then
4169     license="LGPL version 3 or later"
4170 elif enabled gpl; then
4171     license="GPL version 2 or later"
4172 else
4173     license="LGPL version 2.1 or later"
4174 fi
4175
4176 enabled_all gnutls openssl &&
4177     die "GnuTLS and OpenSSL must not be enabled at the same time."
4178
4179 enabled_all gnutls mbedtls &&
4180     die "GnuTLS and mbedTLS must not be enabled at the same time."
4181
4182 enabled_all openssl mbedtls &&
4183     die "OpenSSL and mbedTLS must not be enabled at the same time."
4184
4185 # Disable all the library-specific components if the library itself
4186 # is disabled, see AVCODEC_LIST and following _LIST variables.
4187
4188 disable_components(){
4189     disabled ${1} && disable $(
4190         eval components="\$$(toupper ${1})_COMPONENTS"
4191         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4192     )
4193 }
4194
4195 map 'disable_components $v' $LIBRARY_LIST
4196
4197 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4198 set >> $logfile
4199
4200 test -n "$valgrind" && toolchain="valgrind-memcheck"
4201
4202 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4203     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4204     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4205 }
4206
4207 case "$toolchain" in
4208     *-asan)
4209         cc_default="${toolchain%-asan}"
4210         add_cflags  -fsanitize=address
4211         add_ldflags -fsanitize=address
4212     ;;
4213     *-msan)
4214         cc_default="${toolchain%-msan}"
4215         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4216         add_ldflags -fsanitize=memory
4217     ;;
4218     *-tsan)
4219         cc_default="${toolchain%-tsan}"
4220         add_cflags  -fsanitize=thread
4221         add_ldflags -fsanitize=thread
4222         case "$toolchain" in
4223             gcc-tsan)
4224                 add_cflags  -fPIC
4225                 add_ldflags -fPIC
4226                 ;;
4227         esac
4228     ;;
4229     *-usan)
4230         cc_default="${toolchain%-usan}"
4231         add_cflags  -fsanitize=undefined
4232         add_ldflags -fsanitize=undefined
4233     ;;
4234     valgrind-*)
4235         target_exec_default="valgrind"
4236         case "$toolchain" in
4237             valgrind-massif)
4238                 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"
4239                 ;;
4240             valgrind-memcheck)
4241                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4242                 ;;
4243         esac
4244     ;;
4245     msvc)
4246         # Check whether the current MSVC version needs the C99 converter.
4247         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4248         # support enough of C99 to build ffmpeg. Default to the new
4249         # behaviour if the regexp was unable to match anything, since this
4250         # successfully parses the version number of existing supported
4251         # versions that require the converter (MSVC 2010 and 2012).
4252         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4253         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4254             cc_default="cl.exe"
4255             cxx_default="cl.exe"
4256         else
4257             die "Unsupported MSVC version (2013 or newer required)"
4258         fi
4259         ld_default="$source_path/compat/windows/mslink"
4260         nm_default="dumpbin.exe -symbols"
4261         ar_default="lib.exe"
4262         case "$arch" in
4263         aarch64|arm64)
4264             as_default="armasm64.exe"
4265             ;;
4266         arm*)
4267             as_default="armasm.exe"
4268             ;;
4269         esac
4270         target_os_default="win32"
4271         # Use a relative path for TMPDIR. This makes sure all the
4272         # ffconf temp files are written with a relative path, avoiding
4273         # issues with msys/win32 path conversion for MSVC parameters
4274         # such as -Fo<file> or -out:<file>.
4275         TMPDIR=.
4276     ;;
4277     icl)
4278         cc_default="icl"
4279         ld_default="xilink"
4280         nm_default="dumpbin -symbols"
4281         ar_default="xilib"
4282         target_os_default="win32"
4283         TMPDIR=.
4284     ;;
4285     gcov)
4286         add_cflags  -fprofile-arcs -ftest-coverage
4287         add_ldflags -fprofile-arcs -ftest-coverage
4288     ;;
4289     llvm-cov)
4290         add_cflags -fprofile-arcs -ftest-coverage
4291         add_ldflags --coverage
4292     ;;
4293     hardened)
4294         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4295         add_cflags   -fno-strict-overflow -fstack-protector-all
4296         add_ldflags  -Wl,-z,relro -Wl,-z,now
4297         add_cflags   -fPIE
4298         add_ldexeflags -fPIE -pie
4299     ;;
4300     ?*)
4301         die "Unknown toolchain $toolchain"
4302     ;;
4303 esac
4304
4305 if test -n "$cross_prefix"; then
4306     test -n "$arch" && test -n "$target_os" ||
4307         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4308     enable cross_compile
4309 fi
4310
4311 set_default target_os
4312 if test "$target_os" = android; then
4313     cc_default="clang"
4314 fi
4315
4316 ar_default="${cross_prefix}${ar_default}"
4317 cc_default="${cross_prefix}${cc_default}"
4318 cxx_default="${cross_prefix}${cxx_default}"
4319 nm_default="${cross_prefix}${nm_default}"
4320 pkg_config_default="${cross_prefix}${pkg_config_default}"
4321 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4322     ranlib_default="${cross_prefix}${ranlib_default} -D"
4323 else
4324     ranlib_default="${cross_prefix}${ranlib_default}"
4325 fi
4326 strip_default="${cross_prefix}${strip_default}"
4327 windres_default="${cross_prefix}${windres_default}"
4328
4329 sysinclude_default="${sysroot}/usr/include"
4330
4331 if enabled cuda_sdk; then
4332     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4333     enable cuda_nvcc
4334 fi
4335
4336 if enabled cuda_nvcc; then
4337     nvcc_default="nvcc"
4338     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4339 else
4340     nvcc_default="clang"
4341     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4342     NVCC_C=""
4343 fi
4344
4345 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4346     target_exec x86asmexe nvcc
4347 enabled cross_compile || host_cc_default=$cc
4348 set_default host_cc
4349
4350 pkg_config_fail_message=""
4351 if ! $pkg_config --version >/dev/null 2>&1; then
4352     warn "$pkg_config not found, library detection may fail."
4353     pkg_config=false
4354 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4355     pkg_config_fail_message="
4356 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4357 fi
4358
4359 if test $doxygen != $doxygen_default && \
4360   ! $doxygen --version >/dev/null 2>&1; then
4361     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4362 fi
4363
4364 exesuf() {
4365     case $1 in
4366         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4367     esac
4368 }
4369
4370 EXESUF=$(exesuf $target_os)
4371 HOSTEXESUF=$(exesuf $host_os)
4372
4373 # set temporary file name
4374 : ${TMPDIR:=$TEMPDIR}
4375 : ${TMPDIR:=$TMP}
4376 : ${TMPDIR:=/tmp}
4377
4378 if [ -n "$tempprefix" ] ; then
4379     mktemp(){
4380         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4381         echo "$tmpname"
4382         mkdir "$tmpname"
4383     }
4384 elif ! test_cmd mktemp -u XXXXXX; then
4385     # simple replacement for missing mktemp
4386     # NOT SAFE FOR GENERAL USE
4387     mktemp(){
4388         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4389         echo "$tmpname"
4390         mkdir "$tmpname"
4391     }
4392 fi
4393
4394 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4395     die "Unable to create temporary directory in $TMPDIR."
4396
4397 tmpfile(){
4398     tmp="${FFTMPDIR}/test"$2
4399     (set -C; exec > $tmp) 2> /dev/null ||
4400         die "Unable to create temporary file in $FFTMPDIR."
4401     eval $1=$tmp
4402 }
4403
4404 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4405 trap 'exit 2' INT
4406
4407 tmpfile TMPASM .asm
4408 tmpfile TMPC   .c
4409 tmpfile TMPCPP .cpp
4410 tmpfile TMPE   $EXESUF
4411 tmpfile TMPH   .h
4412 tmpfile TMPM   .m
4413 tmpfile TMPCU  .cu
4414 tmpfile TMPO   .o
4415 tmpfile TMPS   .S
4416 tmpfile TMPSH  .sh
4417 tmpfile TMPV   .ver
4418
4419 unset -f mktemp
4420
4421 chmod +x $TMPE
4422
4423 # make sure we can execute files in $TMPDIR
4424 cat > $TMPSH 2>> $logfile <<EOF
4425 #! /bin/sh
4426 EOF
4427 chmod +x $TMPSH >> $logfile 2>&1
4428 if ! $TMPSH >> $logfile 2>&1; then
4429     cat <<EOF
4430 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4431 variable to another directory and make sure that it is not mounted noexec.
4432 EOF
4433     die "Sanity test failed."
4434 fi
4435
4436 armasm_flags(){
4437     for flag; do
4438         case $flag in
4439             # Filter out MSVC cl.exe options from cflags that shouldn't
4440             # be passed to gas-preprocessor
4441             -M[TD]*)                                            ;;
4442             *)                  echo $flag                      ;;
4443         esac
4444    done
4445 }
4446
4447 cparser_flags(){
4448     for flag; do
4449         case $flag in
4450             -Wno-switch)             echo -Wno-switch-enum ;;
4451             -Wno-format-zero-length) ;;
4452             -Wdisabled-optimization) ;;
4453             -Wno-pointer-sign)       echo -Wno-other ;;
4454             *)                       echo $flag ;;
4455         esac
4456     done
4457 }
4458
4459 msvc_common_flags(){
4460     for flag; do
4461         case $flag in
4462             # In addition to specifying certain flags under the compiler
4463             # specific filters, they must be specified here as well or else the
4464             # generic catch all at the bottom will print the original flag.
4465             -Wall)                ;;
4466             -Wextra)              ;;
4467             -std=c*)              ;;
4468             # Common flags
4469             -fomit-frame-pointer) ;;
4470             -g)                   echo -Z7 ;;
4471             -fno-math-errno)      ;;
4472             -fno-common)          ;;
4473             -fno-signed-zeros)    ;;
4474             -fPIC)                ;;
4475             -mthumb)              ;;
4476             -march=*)             ;;
4477             -lz)                  echo zlib.lib ;;
4478             -lx264)               echo libx264.lib ;;
4479             -lstdc++)             ;;
4480             -l*)                  echo ${flag#-l}.lib ;;
4481             -LARGEADDRESSAWARE)   echo $flag ;;
4482             -L*)                  echo -libpath:${flag#-L} ;;
4483             -Wl,*)                ;;
4484             *)                    echo $flag ;;
4485         esac
4486     done
4487 }
4488
4489 msvc_flags(){
4490     msvc_common_flags "$@"
4491     for flag; do
4492         case $flag in
4493             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4494                                        -wd4554 ;;
4495             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4496                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4497                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4498                                        -wd4307 \
4499                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4500         esac
4501     done
4502 }
4503
4504 icl_flags(){
4505     msvc_common_flags "$@"
4506     for flag; do
4507         case $flag in
4508             # Despite what Intel's documentation says -Wall, which is supported
4509             # on Windows, does enable remarks so disable them here.
4510             -Wall)                echo $flag -Qdiag-disable:remark ;;
4511             -std=c99)             echo -Qstd=c99 ;;
4512             -flto)                echo -ipo ;;
4513         esac
4514     done
4515 }
4516
4517 icc_flags(){
4518     for flag; do
4519         case $flag in
4520             -flto)                echo -ipo ;;
4521             *)                    echo $flag ;;
4522         esac
4523     done
4524 }
4525
4526 suncc_flags(){
4527     for flag; do
4528         case $flag in
4529             -march=*|-mcpu=*)
4530                 case "${flag#*=}" in
4531                     native)                   echo -xtarget=native       ;;
4532                     v9|niagara)               echo -xarch=sparc          ;;
4533                     ultrasparc)               echo -xarch=sparcvis       ;;
4534                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4535                     i586|pentium)             echo -xchip=pentium        ;;
4536                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4537                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4538                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4539                     pentium4*)          echo -xtarget=pentium4           ;;
4540                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4541                     *-sse3)             echo -xarch=sse3                 ;;
4542                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4543                     bonnell)                   echo -xarch=ssse3         ;;
4544                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4545                     westmere)                  echo -xtarget=westmere    ;;
4546                     silvermont)                echo -xarch=sse4_2        ;;
4547                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4548                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4549                                                echo -xarch=avx           ;;
4550                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4551                     btver1)                    echo -xarch=amdsse4a      ;;
4552                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4553                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4554                     k8|opteron|athlon64|athlon-fx)
4555                                                echo -xarch=sse2a         ;;
4556                     athlon*)                   echo -xarch=pentium_proa  ;;
4557                 esac
4558                 ;;
4559             -std=c99)             echo -xc99              ;;
4560             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4561             -fPIC)                echo -KPIC -xcode=pic32 ;;
4562             -W*,*)                echo $flag              ;;
4563             -f*-*|-W*|-mimpure-text)                      ;;
4564             -shared)              echo -G                 ;;
4565             *)                    echo $flag              ;;
4566         esac
4567     done
4568 }
4569
4570 probe_cc(){
4571     pfx=$1
4572     _cc=$2
4573     first=$3
4574
4575     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4576     unset _ld_o _ldflags _ld_lib _ld_path
4577     unset _depflags _DEPCMD _DEPFLAGS
4578     _flags_filter=echo
4579
4580     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4581         true # no-op to avoid reading stdin in following checks
4582     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4583         _type=llvm_gcc
4584         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4585         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4586         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4587         _cflags_speed='-O3'
4588         _cflags_size='-Os'
4589     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4590         _type=gcc
4591         gcc_version=$($_cc --version | head -n1)
4592         gcc_basever=$($_cc -dumpversion)
4593         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4594         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4595         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4596         case $gcc_basever in
4597             2) ;;
4598             2.*) ;;
4599             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4600         esac
4601         if [ "$first" = true ]; then
4602             case $gcc_basever in
4603                 4.2*)
4604                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4605             esac
4606         fi
4607         _cflags_speed='-O3'
4608         _cflags_size='-Os'
4609     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4610         _type=icc
4611         _ident=$($_cc --version | head -n1)
4612         _depflags='-MMD'
4613         _cflags_speed='-O3'
4614         _cflags_size='-Os'
4615         _cflags_noopt='-O1'
4616         _flags_filter=icc_flags
4617     elif $_cc -v 2>&1 | grep -q xlc; then
4618         _type=xlc
4619         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4620         _cflags_speed='-O5'
4621         _cflags_size='-O5 -qcompact'
4622     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4623         test -d "$sysroot" || die "No valid sysroot specified."
4624         _type=armcc
4625         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4626         armcc_conf="$PWD/armcc.conf"
4627         $_cc --arm_linux_configure                 \
4628              --arm_linux_config_file="$armcc_conf" \
4629              --configure_sysroot="$sysroot"        \
4630              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4631              die "Error creating armcc configuration file."
4632         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4633         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4634         as_default="${cross_prefix}gcc"
4635         _depflags='-MMD'
4636         _cflags_speed='-O3'
4637         _cflags_size='-Os'
4638     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4639         _type=clang
4640         _ident=$($_cc --version 2>/dev/null | head -n1)
4641         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4642         _cflags_speed='-O3'
4643         _cflags_size='-Oz'
4644     elif $_cc -V 2>&1 | grep -q Sun; then
4645         _type=suncc
4646         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4647         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4648         _DEPFLAGS='-xM1 -xc99'
4649         _ldflags='-std=c99'
4650         _cflags_speed='-O5'
4651         _cflags_size='-O5 -xspace'
4652         _flags_filter=suncc_flags
4653     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4654         _type=pathscale
4655         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4656         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4657         _cflags_speed='-O2'
4658         _cflags_size='-Os'
4659         _flags_filter='filter_out -Wdisabled-optimization'
4660     elif $_cc -v 2>&1 | grep -q Open64; then
4661         _type=open64
4662         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4663         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4664         _cflags_speed='-O2'
4665         _cflags_size='-Os'
4666         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4667     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4668         _type=armasm
4669         _ident=$($_cc | head -n1)
4670         # 4509: "This form of conditional instruction is deprecated"
4671         _flags="-nologo -ignore 4509"
4672         _flags_filter=armasm_flags
4673     elif $_cc 2>&1 | grep -q Intel; then
4674         _type=icl
4675         _ident=$($_cc 2>&1 | head -n1)
4676         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4677         # Not only is O3 broken on 13.x+ but it is slower on all previous
4678         # versions (tested) as well.
4679         _cflags_speed="-O2"
4680         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4681         if $_cc 2>&1 | grep -q Linker; then
4682             _ld_o='-out:$@'
4683         else
4684             _ld_o='-Fe$@'
4685         fi
4686         _cc_o='-Fo$@'
4687         _cc_e='-P'
4688         _flags_filter=icl_flags
4689         _ld_lib='lib%.a'
4690         _ld_path='-libpath:'
4691         # -Qdiag-error to make icl error when seeing certain unknown arguments
4692         _flags='-nologo -Qdiag-error:4044,10157'
4693         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4694         # with MSVC which enables it by default.
4695         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4696         disable stripping
4697     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4698         # lld can emulate multiple different linkers; in ms link.exe mode,
4699         # the -? parameter gives the help output which contains an identifyable
4700         # string, while it gives an error in other modes.
4701         _type=lld-link
4702         # The link.exe mode doesn't have a switch for getting the version,
4703         # but we can force it back to gnu mode and get the version from there.
4704         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4705         _ld_o='-out:$@'
4706         _flags_filter=msvc_flags
4707         _ld_lib='lib%.a'
4708         _ld_path='-libpath:'
4709     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4710         _type=msvc
4711         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4712             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4713         else
4714             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4715         fi
4716         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4717         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4718         _cflags_speed="-O2"
4719         _cflags_size="-O1"
4720         _cflags_noopt="-O1"
4721         if $_cc -nologo- 2>&1 | grep -q Linker; then
4722             _ld_o='-out:$@'
4723         else
4724             _ld_o='-Fe$@'
4725         fi
4726         _cc_o='-Fo$@'
4727         _cc_e='-P -Fi$@'
4728         _flags_filter=msvc_flags
4729         _ld_lib='lib%.a'
4730         _ld_path='-libpath:'
4731         _flags='-nologo'
4732         disable stripping
4733     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4734         _type=cparser
4735         _ident=$($_cc --version | head -n1)
4736         _depflags='-MMD'
4737         _cflags_speed='-O4'
4738         _cflags_size='-O2'
4739         _flags_filter=cparser_flags
4740     fi
4741
4742     eval ${pfx}_type=\$_type
4743     eval ${pfx}_ident=\$_ident
4744 }
4745
4746 set_ccvars(){
4747     eval ${1}_C=\${_cc_c-\${${1}_C}}
4748     eval ${1}_E=\${_cc_e-\${${1}_E}}
4749     eval ${1}_O=\${_cc_o-\${${1}_O}}
4750
4751     if [ -n "$_depflags" ]; then
4752         eval ${1}_DEPFLAGS=\$_depflags
4753     else
4754         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4755         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4756         eval DEP${1}FLAGS=\$_flags
4757     fi
4758 }
4759
4760 probe_cc cc "$cc" "true"
4761 cflags_filter=$_flags_filter
4762 cflags_speed=$_cflags_speed
4763 cflags_size=$_cflags_size
4764 cflags_noopt=$_cflags_noopt
4765 add_cflags $_flags $_cflags
4766 cc_ldflags=$_ldflags
4767 set_ccvars CC
4768 set_ccvars CXX
4769
4770 probe_cc hostcc "$host_cc"
4771 host_cflags_filter=$_flags_filter
4772 host_cflags_speed=$_cflags_speed
4773 add_host_cflags  $_flags $_cflags
4774 set_ccvars HOSTCC
4775
4776 test -n "$cc_type" && enable $cc_type ||
4777     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4778
4779 : ${as_default:=$cc}
4780 : ${objcc_default:=$cc}
4781 : ${dep_cc_default:=$cc}
4782 : ${ld_default:=$cc}
4783 : ${host_ld_default:=$host_cc}
4784 set_default ar as objcc dep_cc ld ln_s host_ld windres
4785
4786 probe_cc as "$as"
4787 asflags_filter=$_flags_filter
4788 add_asflags $_flags $_cflags
4789 set_ccvars AS
4790
4791 probe_cc objcc "$objcc"
4792 objcflags_filter=$_flags_filter
4793 add_objcflags $_flags $_cflags
4794 set_ccvars OBJC
4795
4796 probe_cc ld "$ld"
4797 ldflags_filter=$_flags_filter
4798 add_ldflags $_flags $_ldflags
4799 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4800 LD_O=${_ld_o-$LD_O}
4801 LD_LIB=${_ld_lib-$LD_LIB}
4802 LD_PATH=${_ld_path-$LD_PATH}
4803
4804 probe_cc hostld "$host_ld"
4805 host_ldflags_filter=$_flags_filter
4806 add_host_ldflags $_flags $_ldflags
4807 HOSTLD_O=${_ld_o-$HOSTLD_O}
4808
4809 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4810     probe_cc depcc "$dep_cc"
4811     CCDEP=${_DEPCMD:-$DEPCMD}
4812     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4813     DEPCCFLAGS=$_flags
4814 fi
4815
4816 if $ar 2>&1 | grep -q Microsoft; then
4817     arflags="-nologo"
4818     ar_o='-out:$@'
4819 elif $ar 2>&1 | grep -q "\[D\] "; then
4820     arflags="rcD"
4821     ar_o='$@'
4822 else
4823     arflags="rc"
4824     ar_o='$@'
4825 fi
4826
4827 add_cflags $extra_cflags
4828 add_cxxflags $extra_cxxflags
4829 add_objcflags $extra_objcflags
4830 add_asflags $extra_cflags
4831
4832 if test -n "$sysroot"; then
4833     case "$cc_type" in
4834         gcc|llvm_gcc|clang)
4835             add_cppflags --sysroot="$sysroot"
4836             add_ldflags --sysroot="$sysroot"
4837         ;;
4838     esac
4839 fi
4840
4841 if test "$cpu" = host; then
4842     enabled cross_compile &&
4843         warn "--cpu=host makes no sense when cross-compiling."
4844
4845     case "$cc_type" in
4846         gcc|llvm_gcc)
4847             check_native(){
4848                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4849                 sed -n "/cc1.*$1=/{
4850                             s/.*$1=\\([^ ]*\\).*/\\1/
4851                             p
4852                             q
4853                         }" $TMPE
4854             }
4855             cpu=$(check_native -march || check_native -mcpu)
4856         ;;
4857         clang)
4858             check_native(){
4859                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4860                 sed -n "/cc1.*-target-cpu /{
4861                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4862                             p
4863                             q
4864                         }" $TMPE
4865             }
4866             cpu=$(check_native -march)
4867         ;;
4868     esac
4869
4870     test "${cpu:-host}" = host &&
4871         die "--cpu=host not supported with compiler $cc"
4872 fi
4873
4874 # Deal with common $arch aliases
4875 case "$arch" in
4876     aarch64|arm64)
4877         arch="aarch64"
4878     ;;
4879     arm*|iPad*|iPhone*)
4880         arch="arm"
4881     ;;
4882     mips*|IP*)
4883         case "$arch" in
4884         *el)
4885             add_cppflags -EL
4886             add_ldflags -EL
4887         ;;
4888         *eb)
4889             add_cppflags -EB
4890             add_ldflags -EB
4891         ;;
4892         esac
4893         arch="mips"
4894     ;;
4895     parisc*|hppa*)
4896         arch="parisc"
4897     ;;
4898     "Power Macintosh"|ppc*|powerpc*)
4899         arch="ppc"
4900     ;;
4901     s390|s390x)
4902         arch="s390"
4903     ;;
4904     sh4|sh)
4905         arch="sh4"
4906     ;;
4907     sun4*|sparc*)
4908         arch="sparc"
4909     ;;
4910     tilegx|tile-gx)
4911         arch="tilegx"
4912     ;;
4913     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4914         arch="x86"
4915     ;;
4916 esac
4917
4918 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4919 enable $arch
4920
4921 # Add processor-specific flags
4922 if enabled aarch64; then
4923
4924     case $cpu in
4925         armv*)
4926             cpuflags="-march=$cpu"
4927         ;;
4928         *)
4929             cpuflags="-mcpu=$cpu"
4930         ;;
4931     esac
4932
4933 elif enabled alpha; then
4934
4935     cpuflags="-mcpu=$cpu"
4936
4937 elif enabled arm; then
4938
4939     check_arm_arch() {
4940         test_cpp_condition stddef.h \
4941             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4942             $cpuflags
4943     }
4944
4945     probe_arm_arch() {
4946         if   check_arm_arch 4;        then echo armv4
4947         elif check_arm_arch 4T;       then echo armv4t
4948         elif check_arm_arch 5;        then echo armv5
4949         elif check_arm_arch 5E;       then echo armv5e
4950         elif check_arm_arch 5T;       then echo armv5t
4951         elif check_arm_arch 5TE;      then echo armv5te
4952         elif check_arm_arch 5TEJ;     then echo armv5te
4953         elif check_arm_arch 6;        then echo armv6
4954         elif check_arm_arch 6J;       then echo armv6j
4955         elif check_arm_arch 6K;       then echo armv6k
4956         elif check_arm_arch 6Z;       then echo armv6z
4957         elif check_arm_arch 6KZ;      then echo armv6zk
4958         elif check_arm_arch 6ZK;      then echo armv6zk
4959         elif check_arm_arch 6T2;      then echo armv6t2
4960         elif check_arm_arch 7;        then echo armv7
4961         elif check_arm_arch 7A  7_A;  then echo armv7-a
4962         elif check_arm_arch 7S;       then echo armv7-a
4963         elif check_arm_arch 7R  7_R;  then echo armv7-r
4964         elif check_arm_arch 7M  7_M;  then echo armv7-m
4965         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4966         elif check_arm_arch 8A  8_A;  then echo armv8-a
4967         fi
4968     }
4969
4970     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4971
4972     case $cpu in
4973         armv*)
4974             cpuflags="-march=$cpu"
4975             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4976         ;;
4977         *)
4978             cpuflags="-mcpu=$cpu"
4979             case $cpu in
4980                 cortex-a*)                               subarch=armv7a  ;;
4981                 cortex-r*)                               subarch=armv7r  ;;
4982                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4983                 arm11*)                                  subarch=armv6   ;;
4984                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4985                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4986                 *)                             subarch=$(probe_arm_arch) ;;
4987             esac
4988         ;;
4989     esac
4990
4991     case "$subarch" in
4992         armv5t*)    enable fast_clz                ;;
4993         armv[6-8]*)
4994             enable fast_clz
4995             disabled fast_unaligned || enable fast_unaligned
4996             ;;
4997     esac
4998
4999 elif enabled avr32; then
5000
5001     case $cpu in
5002         ap7[02]0[0-2])
5003             subarch="avr32_ap"
5004             cpuflags="-mpart=$cpu"
5005         ;;
5006         ap)
5007             subarch="avr32_ap"
5008             cpuflags="-march=$cpu"
5009         ;;
5010         uc3[ab]*)
5011             subarch="avr32_uc"
5012             cpuflags="-mcpu=$cpu"
5013         ;;
5014         uc)
5015             subarch="avr32_uc"
5016             cpuflags="-march=$cpu"
5017         ;;
5018     esac
5019
5020 elif enabled bfin; then
5021
5022     cpuflags="-mcpu=$cpu"
5023
5024 elif enabled mips; then
5025
5026     if [ "$cpu" != "generic" ]; then
5027         disable mips32r2
5028         disable mips32r5
5029         disable mips64r2
5030         disable mips32r6
5031         disable mips64r6
5032         disable loongson2
5033         disable loongson3
5034         disable mipsdsp
5035         disable mipsdspr2
5036
5037         cpuflags="-march=$cpu"
5038
5039         case $cpu in
5040             # General ISA levels
5041             mips1|mips3)
5042             ;;
5043             mips32r2)
5044                 enable mips32r2
5045             ;;
5046             mips32r5)
5047                 enable mips32r2
5048                 enable mips32r5
5049             ;;
5050             mips64r2|mips64r5)
5051                 enable mips64r2
5052                 enable loongson3
5053             ;;
5054             # Cores from MIPS(MTI)
5055             24kc)
5056                 disable mipsfpu
5057                 enable mips32r2
5058             ;;
5059             24kf*|24kec|34kc|74Kc|1004kc)
5060                 enable mips32r2
5061             ;;
5062             24kef*|34kf*|1004kf*)
5063                 enable mipsdsp
5064                 enable mips32r2
5065             ;;
5066             p5600)
5067                 enable mips32r2
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             # Cores from Loongson
5080             loongson2e|loongson2f|loongson3*)
5081                 enable local_aligned
5082                 enable simd_align_16
5083                 enable fast_64bit
5084                 enable fast_clz
5085                 enable fast_cmov
5086                 enable fast_unaligned
5087                 disable aligned_stack
5088                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5089                 if test "$cc_type" = "gcc"; then
5090                     case $gcc_basever in
5091                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5092                         expensive_optimization_flag="-fno-expensive-optimizations"
5093                         ;;
5094                         *)
5095                         expensive_optimization_flag=""
5096                         ;;
5097                     esac
5098                 fi
5099
5100                 case $cpu in
5101                     loongson3*)
5102                         enable loongson3
5103                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5104                     ;;
5105                     loongson2e)
5106                         enable loongson2
5107                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5108                     ;;
5109                     loongson2f)
5110                         enable loongson2
5111                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5112                     ;;
5113                 esac
5114             ;;
5115             *)
5116                 warn "unknown MIPS CPU"
5117             ;;
5118         esac
5119
5120     else
5121         disable mipsdsp
5122         disable mipsdspr2
5123         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5124         warn 'generic cpu selected'
5125     fi
5126
5127 elif enabled ppc; then
5128
5129     disable ldbrx
5130
5131     case $(tolower $cpu) in
5132         601|ppc601|powerpc601)
5133             cpuflags="-mcpu=601"
5134             disable altivec
5135         ;;
5136         603*|ppc603*|powerpc603*)
5137             cpuflags="-mcpu=603"
5138             disable altivec
5139         ;;
5140         604*|ppc604*|powerpc604*)
5141             cpuflags="-mcpu=604"
5142             disable altivec
5143         ;;
5144         g3|75*|ppc75*|powerpc75*)
5145             cpuflags="-mcpu=750"
5146             disable altivec
5147         ;;
5148         g4|745*|ppc745*|powerpc745*)
5149             cpuflags="-mcpu=7450"
5150             disable vsx
5151         ;;
5152         74*|ppc74*|powerpc74*)
5153             cpuflags="-mcpu=7400"
5154             disable vsx
5155         ;;
5156         g5|970|ppc970|powerpc970)
5157             cpuflags="-mcpu=970"
5158             disable vsx
5159         ;;
5160         power[3-6]*)
5161             cpuflags="-mcpu=$cpu"
5162             disable vsx
5163         ;;
5164         power[7-8]*)
5165             cpuflags="-mcpu=$cpu"
5166         ;;
5167         cell)
5168             cpuflags="-mcpu=cell"
5169             enable ldbrx
5170             disable vsx
5171         ;;
5172         e500mc)
5173             cpuflags="-mcpu=e500mc"
5174             disable altivec
5175         ;;
5176         e500v2)
5177             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5178             disable altivec
5179             disable dcbzl
5180         ;;
5181         e500)
5182             cpuflags="-mcpu=8540 -mhard-float"
5183             disable altivec
5184             disable dcbzl
5185         ;;
5186     esac
5187
5188 elif enabled sparc; then
5189
5190     case $cpu in
5191         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5192             cpuflags="-mcpu=$cpu"
5193         ;;
5194         ultrasparc*|niagara[234])
5195             cpuflags="-mcpu=$cpu"
5196         ;;
5197     esac
5198
5199 elif enabled x86; then
5200
5201     case $cpu in
5202         i[345]86|pentium)
5203             cpuflags="-march=$cpu"
5204             disable i686
5205             disable mmx
5206         ;;
5207         # targets that do NOT support nopl and conditional mov (cmov)
5208         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5209             cpuflags="-march=$cpu"
5210             disable i686
5211         ;;
5212         # targets that do support nopl and conditional mov (cmov)
5213         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5214         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5215         |amdfam10|barcelona|b[dt]ver*|znver*)
5216             cpuflags="-march=$cpu"
5217             enable i686
5218             enable fast_cmov
5219         ;;
5220         # targets that do support conditional mov but on which it's slow
5221         pentium4|pentium4m|prescott|nocona)
5222             cpuflags="-march=$cpu"
5223             enable i686
5224             disable fast_cmov
5225         ;;
5226     esac
5227
5228 fi
5229
5230 if [ "$cpu" != generic ]; then
5231     add_cflags  $cpuflags
5232     add_asflags $cpuflags
5233     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5234 fi
5235
5236 # compiler sanity check
5237 test_exec <<EOF
5238 int main(void){ return 0; }
5239 EOF
5240 if test "$?" != 0; then
5241     echo "$cc is unable to create an executable file."
5242     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5243         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5244         echo "Only do this if you know what cross compiling means."
5245     fi
5246     die "C compiler test failed."
5247 fi
5248
5249 add_cppflags -D_ISOC99_SOURCE
5250 add_cxxflags -D__STDC_CONSTANT_MACROS
5251 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5252
5253 # some compilers silently accept -std=c11, so we also need to check that the
5254 # version macro is defined properly
5255 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5256     add_cflags -std=c11 ||
5257     check_cflags -std=c99
5258
5259 check_cppflags -D_FILE_OFFSET_BITS=64
5260 check_cppflags -D_LARGEFILE_SOURCE
5261
5262 add_host_cppflags -D_ISOC99_SOURCE
5263 check_host_cflags -std=c99
5264 check_host_cflags -Wall
5265 check_host_cflags $host_cflags_speed
5266
5267 check_64bit(){
5268     arch32=$1
5269     arch64=$2
5270     expr=${3:-'sizeof(void *) > 4'}
5271     test_code cc "" "int test[2*($expr) - 1]" &&
5272         subarch=$arch64 || subarch=$arch32
5273     enable $subarch
5274 }
5275
5276 case "$arch" in
5277     aarch64|alpha|ia64)
5278         enabled shared && enable_weak pic
5279     ;;
5280     mips)
5281         check_64bit mips mips64 '_MIPS_SIM > 1'
5282         enabled shared && enable_weak pic
5283     ;;
5284     parisc)
5285         check_64bit parisc parisc64
5286         enabled shared && enable_weak pic
5287     ;;
5288     ppc)
5289         check_64bit ppc ppc64
5290         enabled shared && enable_weak pic
5291     ;;
5292     s390)
5293         check_64bit s390 s390x
5294         enabled shared && enable_weak pic
5295     ;;
5296     sparc)
5297         check_64bit sparc sparc64
5298         enabled shared && enable_weak pic
5299     ;;
5300     x86)
5301         check_64bit x86_32 x86_64
5302         # Treat x32 as x64 for now. Note it also needs pic if shared
5303         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5304             subarch=x86_64 && enable x86_64 && disable x86_32
5305         if enabled x86_64; then
5306             enabled shared && enable_weak pic
5307             objformat=elf64
5308         fi
5309     ;;
5310 esac
5311
5312 # OS specific
5313 case $target_os in
5314     aix)
5315         SHFLAGS=-shared
5316         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5317         enabled shared && add_ldflags -Wl,-brtl
5318         arflags='-Xany -r -c'
5319         striptype=""
5320         ;;
5321     android)
5322         disable symver
5323         enable section_data_rel_ro
5324         add_cflags -fPIE
5325         add_ldexeflags -fPIE -pie
5326         SLIB_INSTALL_NAME='$(SLIBNAME)'
5327         SLIB_INSTALL_LINKS=
5328         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5329         ;;
5330     haiku)
5331         prefix_default="/boot/common"
5332         network_extralibs="-lnetwork"
5333         host_extralibs=
5334         ;;
5335     sunos)
5336         SHFLAGS='-shared -Wl,-h,$$(@F)'
5337         enabled x86 && append SHFLAGS -mimpure-text
5338         network_extralibs="-lsocket -lnsl"
5339         add_cppflags -D__EXTENSIONS__
5340         # When using suncc to build, the Solaris linker will mark
5341         # an executable with each instruction set encountered by
5342         # the Solaris assembler.  As our libraries contain their own
5343         # guards for processor-specific code, instead suppress
5344         # generation of the HWCAPS ELF section on Solaris x86 only.
5345         enabled_all suncc x86 &&
5346             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5347             add_ldflags -Wl,-M,mapfile
5348         nm_default='nm -P -g'
5349         striptype=""
5350         version_script='-M'
5351         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5352         ;;
5353     netbsd)
5354         disable symver
5355         oss_indev_extralibs="-lossaudio"
5356         oss_outdev_extralibs="-lossaudio"
5357         enabled gcc || check_ldflags -Wl,-zmuldefs
5358         ;;
5359     openbsd|bitrig)
5360         disable symver
5361         enable section_data_rel_ro
5362         striptype=""
5363         SHFLAGS='-shared'
5364         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5365         SLIB_INSTALL_LINKS=
5366         oss_indev_extralibs="-lossaudio"
5367         oss_outdev_extralibs="-lossaudio"
5368         ;;
5369     dragonfly)
5370         disable symver
5371         ;;
5372     freebsd)
5373         ;;
5374     bsd/os)
5375         add_extralibs -lpoll -lgnugetopt
5376         strip="strip -d"
5377         ;;
5378     darwin)
5379         enabled ppc && add_asflags -force_cpusubtype_ALL
5380         install_name_dir_default='$(SHLIBDIR)'
5381         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5382         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5383         strip="${strip} -x"
5384         add_ldflags -Wl,-dynamic,-search_paths_first
5385         check_cflags -Werror=partial-availability
5386         SLIBSUF=".dylib"
5387         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5388         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5389         enabled x86_64 && objformat="macho64" || objformat="macho32"
5390         enabled_any pic shared x86_64 ||
5391             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5392         check_headers dispatch/dispatch.h &&
5393             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5394         if test -n "$sysroot"; then
5395             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5396             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5397         fi
5398         version_script='-exported_symbols_list'
5399         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5400         # Workaround for Xcode 11 -fstack-check bug
5401         if enabled clang; then
5402             clang_version=$($cc -dumpversion)
5403             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5404         fi
5405         ;;
5406     msys*)
5407         die "Native MSYS builds are discouraged, please use the MINGW environment."
5408         ;;
5409     mingw32*|mingw64*)
5410         target_os=mingw32
5411         LIBTARGET=i386
5412         if enabled x86_64; then
5413             LIBTARGET="i386:x86-64"
5414         elif enabled arm; then
5415             LIBTARGET="arm"
5416         elif enabled aarch64; then
5417             LIBTARGET="arm64"
5418         fi
5419         if enabled shared; then
5420             # Cannot build both shared and static libs when using dllimport.
5421             disable static
5422         fi
5423         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5424         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5425         shlibdir_default="$bindir_default"
5426         SLIBPREF=""
5427         SLIBSUF=".dll"
5428         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5429         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5430         if test_cmd lib.exe -list; then
5431             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5432             if enabled x86_64; then
5433                 LIBTARGET=x64
5434             fi
5435         else
5436             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5437         fi
5438         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5439         SLIB_INSTALL_LINKS=
5440         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5441         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5442         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5443         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5444         enabled x86_64 && objformat="win64" || objformat="win32"
5445         dlltool="${cross_prefix}dlltool"
5446         ranlib=:
5447         enable dos_paths
5448         check_ldflags -Wl,--nxcompat,--dynamicbase
5449         # Lets work around some stupidity in binutils.
5450         # ld will strip relocations from executables even though we need them
5451         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5452         # however ld then forgets what the entry point should be (oops) so we
5453         # have to manually (re)set it.
5454         if enabled x86_32; then
5455             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5456         elif enabled x86_64; then
5457             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5458             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5459             # Set image base >4GB for extra entropy with HEASLR
5460             add_ldexeflags -Wl,--image-base,0x140000000
5461             append SHFLAGS -Wl,--image-base,0x180000000
5462         fi
5463         ;;
5464     win32|win64)
5465         disable symver
5466         if enabled shared; then
5467             # Link to the import library instead of the normal static library
5468             # for shared libs.
5469             LD_LIB='%.lib'
5470             # Cannot build both shared and static libs with MSVC or icl.
5471             disable static
5472         fi
5473         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5474         shlibdir_default="$bindir_default"
5475         SLIBPREF=""
5476         SLIBSUF=".dll"
5477         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5478         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5479         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5480         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5481         SLIB_INSTALL_LINKS=
5482         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5483         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5484         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5485         enabled x86_64 && objformat="win64" || objformat="win32"
5486         ranlib=:
5487         enable dos_paths
5488         ;;
5489     cygwin*)
5490         target_os=cygwin
5491         shlibdir_default="$bindir_default"
5492         SLIBPREF="cyg"
5493         SLIBSUF=".dll"
5494         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5495         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5496         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5497         SLIB_INSTALL_LINKS=
5498         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5499         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5500         enabled x86_64 && objformat="win64" || objformat="win32"
5501         enable dos_paths
5502         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5503         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5504         ;;
5505     *-dos|freedos|opendos)
5506         network_extralibs="-lsocket"
5507         objformat="coff"
5508         enable dos_paths
5509         ;;
5510     linux)
5511         enable section_data_rel_ro
5512         enabled_any arm aarch64 && enable_weak linux_perf
5513         ;;
5514     irix*)
5515         target_os=irix
5516         ranlib="echo ignoring ranlib"
5517         ;;
5518     os/2*)
5519         strip="lxlite -CS"
5520         striptype=""
5521         objformat="aout"
5522         add_cppflags -D_GNU_SOURCE
5523         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5524         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5525         LIBSUF="_s.a"
5526         SLIBPREF=""
5527         SLIBSUF=".dll"
5528         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5529         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5530         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5531             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5532             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5533             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5534             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5535         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5536             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5537         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5538         SLIB_INSTALL_LINKS=
5539         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5540         enable dos_paths
5541         enable_weak os2threads
5542         ;;
5543     gnu/kfreebsd)
5544         add_cppflags -D_BSD_SOURCE
5545         ;;
5546     gnu)
5547         ;;
5548     qnx)
5549         add_cppflags -D_QNX_SOURCE
5550         network_extralibs="-lsocket"
5551         ;;
5552     symbian)
5553         SLIBSUF=".dll"
5554         enable dos_paths
5555         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5556         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5557         add_ldflags -Wl,--target1-abs,--no-undefined \
5558                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5559                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5560         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5561                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5562                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5563         ;;
5564     minix)
5565         ;;
5566     none)
5567         ;;
5568     *)
5569         die "Unknown OS '$target_os'."
5570         ;;
5571 esac
5572
5573 # test if creating links works
5574 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5575 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5576 mkdir "$link_dest"
5577 $ln_s "$link_dest" "$link_name"
5578 touch "$link_dest/test_file"
5579 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5580     # create link to source path
5581     [ -e src ] && rm src
5582     $ln_s "$source_path" src
5583     source_link=src
5584 else
5585     # creating directory links doesn't work
5586     # fall back to using the full source path
5587     source_link="$source_path"
5588 fi
5589 # cleanup
5590 rm -r "$link_dest"
5591 rm -r "$link_name"
5592
5593 # determine libc flavour
5594
5595 probe_libc(){
5596     pfx=$1
5597     pfx_no_=${pfx%_}
5598     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5599     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5600         eval ${pfx}libc_type=uclibc
5601         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5602     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5603         eval ${pfx}libc_type=glibc
5604         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5605     # MinGW headers can be installed on Cygwin, so check for newlib first.
5606     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5607         eval ${pfx}libc_type=newlib
5608         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5609     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5610     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5611         eval ${pfx}libc_type=mingw64
5612         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5613             add_compat msvcrt/snprintf.o
5614             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5615         fi
5616         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5617         eval test \$${pfx_no_}cc_type = "gcc" &&
5618             add_${pfx}cppflags -D__printf__=__gnu_printf__
5619         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5620             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5621         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5622     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5623          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5624         eval ${pfx}libc_type=mingw32
5625         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5626             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5627             die "ERROR: MinGW32 runtime version must be >= 3.15."
5628         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5629         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5630             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5631         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5632             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5633         eval test \$${pfx_no_}cc_type = "gcc" &&
5634             add_${pfx}cppflags -D__printf__=__gnu_printf__
5635         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5636     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5637         eval ${pfx}libc_type=msvcrt
5638         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5639             if [ "$pfx" = host_ ]; then
5640                 add_host_cppflags -Dsnprintf=_snprintf
5641             else
5642                 add_compat strtod.o strtod=avpriv_strtod
5643                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5644                                              _snprintf=avpriv_snprintf  \
5645                                              vsnprintf=avpriv_vsnprintf
5646             fi
5647         fi
5648         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5649         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5650         # 0x601 by default unless something else is set by the user.
5651         # This can easily lead to us detecting functions only present
5652         # in such new versions and producing binaries requiring windows 7.0.
5653         # Therefore explicitly set the default to Vista unless the user has
5654         # set something else on the command line.
5655         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5656         # family. For these cases, configure is free to use any functions
5657         # found in the SDK headers by default. (Alternatively, we could force
5658         # _WIN32_WINNT to 0x0602 in that case.)
5659         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5660             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5661 #ifdef WINAPI_FAMILY
5662 #include <winapifamily.h>
5663 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5664 #error not desktop
5665 #endif
5666 #endif
5667 EOF
5668         if [ "$pfx" = "" ]; then
5669             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5670             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5671         fi
5672     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5673         eval ${pfx}libc_type=klibc
5674     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5675         eval ${pfx}libc_type=bionic
5676     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5677         eval ${pfx}libc_type=solaris
5678         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5679     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5680         eval ${pfx}libc_type=djgpp
5681         add_cppflags -U__STRICT_ANSI__
5682         add_cflags "-include $source_path/compat/djgpp/math.h"
5683         add_compat djgpp/math.o
5684     fi
5685     test_${pfx}cc <<EOF
5686 #include <time.h>
5687 void *v = localtime_r;
5688 EOF
5689 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5690 #include <time.h>
5691 void *v = localtime_r;
5692 EOF
5693
5694     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5695 }
5696
5697 probe_libc
5698 probe_libc host_
5699
5700 # hacks for compiler/libc/os combinations
5701
5702 case $libc_type in
5703     bionic)
5704         add_compat strtod.o strtod=avpriv_strtod
5705         ;;
5706 esac
5707
5708 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5709     add_cppflags '-I\$(SRC_PATH)/compat/float'
5710
5711 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5712
5713 set_default libdir
5714 : ${shlibdir_default:="$libdir"}
5715 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5716
5717 set_default $PATHS_LIST
5718 set_default nm
5719
5720 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5721
5722 enable_weak_pic() {
5723     disabled pic && return
5724     enable pic
5725     add_cppflags -DPIC
5726     case "$target_os" in
5727     mingw*|cygwin*|win*)
5728         ;;
5729     *)
5730         add_cflags -fPIC
5731         add_asflags -fPIC
5732         ;;
5733     esac
5734 }
5735
5736 enabled pic && enable_weak_pic
5737
5738 test_cc <<EOF || die "Symbol mangling check failed."
5739 int ff_extern;
5740 EOF
5741 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5742 extern_prefix=${sym%%ff_extern*}
5743
5744 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5745
5746 for restrict_keyword in restrict __restrict__ __restrict ""; do
5747     test_code cc "" "char * $restrict_keyword p" && break
5748 done
5749
5750 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5751
5752 # The global variable ensures the bits appear unchanged in the object file.
5753 test_cc <<EOF || die "endian test failed"
5754 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5755 EOF
5756 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5757
5758 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5759
5760 if ! enabled ppc64 || enabled bigendian; then
5761     disable vsx
5762 fi
5763
5764 check_gas() {
5765     log "check_gas using '$as' as AS"
5766     # :vararg is used on aarch64, arm and ppc altivec
5767     check_as vararg "
5768 .macro m n, y:vararg=0
5769 \n: .int \y
5770 .endm
5771 m x" || return 1
5772     # .altmacro is only used in arm asm
5773     ! enabled arm || check_as gnu_as ".altmacro"
5774 }
5775
5776 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5777     nogas=:
5778     enabled_any arm aarch64 && nogas=die
5779     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5780     as_noop=-v
5781
5782     case $as_type in
5783         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5784         gcc)  gaspp_as_type=gas ;;
5785         *)    gaspp_as_type=$as_type ;;
5786     esac
5787
5788     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5789
5790     test "${as#*gas-preprocessor.pl}" != "$as" ||
5791     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5792         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5793
5794     if ! check_gas ; then
5795         as=${gas:=$as}
5796         check_gas || \
5797             $nogas "GNU assembler not found, install/update gas-preprocessor"
5798     fi
5799
5800     check_as as_func ".func test
5801                       .endfunc"
5802 fi
5803
5804 check_inline_asm inline_asm_labels '"1:\n"'
5805
5806 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5807
5808 if enabled aarch64; then
5809     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5810     # internal assembler in clang 3.3 does not support this instruction
5811     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5812     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5813
5814     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5815
5816 elif enabled alpha; then
5817
5818     check_cflags -mieee
5819
5820 elif enabled arm; then
5821
5822     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5823     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5824 float func(float a, float b){ return a+b; }
5825 EOF
5826     enabled thumb && check_cflags -mthumb || check_cflags -marm
5827
5828     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5829         :
5830     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5831         :
5832     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5833         case "${cross_prefix:-$cc}" in
5834             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5835             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5836 __asm__ (".eabi_attribute 28, 1");
5837 int main(void) { return 0; }
5838 EOF
5839         esac
5840         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5841     fi
5842
5843     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5844     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5845     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5846     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5847     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5848     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5849     enabled setend  && check_insn setend  'setend be'
5850
5851     [ $target_os = linux ] || [ $target_os = android ] ||
5852         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5853             $ARCH_EXT_LIST_ARM
5854
5855     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5856
5857     check_as as_arch_directive ".arch armv7-a"
5858     check_as as_dn_directive   "ra .dn d0.i16"
5859     check_as as_fpu_directive  ".fpu neon"
5860
5861     # llvm's integrated assembler supports .object_arch from llvm 3.5
5862     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5863         check_as as_object_arch ".object_arch armv4"
5864
5865     # MS armasm fails to assemble our PIC constructs
5866     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5867
5868 elif enabled mips; then
5869
5870     # Check toolchain ISA level
5871     if enabled mips64; then
5872         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5873             disable mips64r2
5874
5875         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5876
5877         disable mips32r6 && disable mips32r5 && disable mips32r2
5878     else
5879         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5880             disable mips32r5 && disable mips32r2
5881
5882         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5883         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5884
5885         disable mips64r6 && disable mips64r5 && disable mips64r2
5886     fi
5887
5888     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5889     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5890
5891     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5892     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5893
5894     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5895     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5896     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5897
5898     # loongson2 have no switch cflag so we can only probe toolchain ability
5899     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5900
5901     # loongson3 is paired with MMI
5902     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5903
5904     # MMI can be detected at runtime too
5905     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5906
5907     if enabled bigendian && enabled msa; then
5908         disable msa
5909     fi
5910
5911 elif enabled parisc; then
5912
5913     if enabled gcc; then
5914         case $($cc -dumpversion) in
5915             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5916         esac
5917     fi
5918
5919 elif enabled ppc; then
5920
5921     enable local_aligned
5922
5923     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5924     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5925     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5926     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5927
5928     if enabled altivec; then
5929         check_cflags -maltivec -mabi=altivec
5930
5931         # check if our compiler supports Motorola AltiVec C API
5932         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5933                                     vector signed int v2 = (vector signed int) { 1 };
5934                                     v1 = vec_add(v1, v2);"
5935
5936         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5937     fi
5938
5939     if enabled vsx; then
5940         check_cflags -mvsx &&
5941         check_cc vsx altivec.h "int v[4] = { 0 };
5942                                 vector signed int v1 = vec_vsx_ld(0, v);"
5943     fi
5944
5945     if enabled power8; then
5946         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5947     fi
5948
5949 elif enabled x86; then
5950
5951     check_builtin rdtsc    intrin.h   "__rdtsc()"
5952     check_builtin mm_empty mmintrin.h "_mm_empty()"
5953
5954     enable local_aligned
5955
5956     # check whether EBP is available on x86
5957     # As 'i' is stored on the stack, this program will crash
5958     # if the base pointer is used to access it because the
5959     # base pointer is cleared in the inline assembly code.
5960     check_exec_crash <<EOF && enable ebp_available
5961 volatile int i=0;
5962 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5963 return i;
5964 EOF
5965
5966     # check whether EBX is available on x86
5967     check_inline_asm ebx_available '""::"b"(0)' &&
5968         check_inline_asm ebx_available '"":::"%ebx"'
5969
5970     # check whether xmm clobbers are supported
5971     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5972
5973     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5974         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5975
5976     # check whether binutils is new enough to compile SSSE3/MMXEXT
5977     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5978     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5979
5980     probe_x86asm(){
5981         x86asmexe_probe=$1
5982         if test_cmd $x86asmexe_probe -v; then
5983             x86asmexe=$x86asmexe_probe
5984             x86asm_type=nasm
5985             x86asm_debug="-g -F dwarf"
5986             X86ASMDEP=
5987             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5988         elif test_cmd $x86asmexe_probe --version; then
5989             x86asmexe=$x86asmexe_probe
5990             x86asm_type=yasm
5991             x86asm_debug="-g dwarf2"
5992             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5993             X86ASM_DEPFLAGS=
5994         fi
5995         check_x86asm x86asm "movbe ecx, [5]"
5996     }
5997
5998     if ! disabled_any asm mmx x86asm; then
5999         disable x86asm
6000         for program in $x86asmexe nasm yasm; do
6001             probe_x86asm $program && break
6002         done
6003         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
6004         X86ASMFLAGS="-f $objformat"
6005         enabled pic               && append X86ASMFLAGS "-DPIC"
6006         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
6007         case "$objformat" in
6008             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6009         esac
6010
6011         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6012         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6013         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6014         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6015         check_x86asm cpunop          "CPU amdnop"
6016     fi
6017
6018     case "$cpu" in
6019         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6020             disable fast_clz
6021         ;;
6022     esac
6023
6024 fi
6025
6026 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6027
6028 check_ldflags -Wl,--as-needed
6029 check_ldflags -Wl,-z,noexecstack
6030
6031 if ! disabled network; then
6032     check_func getaddrinfo $network_extralibs
6033     check_func inet_aton $network_extralibs
6034
6035     check_type netdb.h "struct addrinfo"
6036     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6037     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6038     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6039     check_type poll.h "struct pollfd"
6040     check_type netinet/sctp.h "struct sctp_event_subscribe"
6041     check_struct "sys/socket.h" "struct msghdr" msg_flags
6042     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6043     check_type netinet/in.h "struct sockaddr_in6"
6044     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6045     check_type "sys/types.h sys/socket.h" socklen_t
6046
6047     # Prefer arpa/inet.h over winsock2
6048     if check_headers arpa/inet.h ; then
6049         check_func closesocket
6050     elif check_headers winsock2.h ; then
6051         check_func_headers winsock2.h closesocket -lws2 &&
6052             network_extralibs="-lws2" ||
6053         { check_func_headers winsock2.h closesocket -lws2_32 &&
6054             network_extralibs="-lws2_32"; } || disable winsock2_h network
6055         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6056
6057         check_type ws2tcpip.h socklen_t
6058         check_type ws2tcpip.h "struct addrinfo"
6059         check_type ws2tcpip.h "struct group_source_req"
6060         check_type ws2tcpip.h "struct ip_mreq_source"
6061         check_type ws2tcpip.h "struct ipv6_mreq"
6062         check_type winsock2.h "struct pollfd"
6063         check_struct winsock2.h "struct sockaddr" sa_len
6064         check_type ws2tcpip.h "struct sockaddr_in6"
6065         check_type ws2tcpip.h "struct sockaddr_storage"
6066     else
6067         disable network
6068     fi
6069 fi
6070
6071 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6072 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6073 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6074 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6075 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6076 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6077 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6078
6079 case "$custom_allocator" in
6080     jemalloc)
6081         # jemalloc by default does not use a prefix
6082         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6083     ;;
6084     tcmalloc)
6085         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6086         malloc_prefix=tc_
6087     ;;
6088 esac
6089
6090 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6091 check_func  ${malloc_prefix}memalign            && enable memalign
6092 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6093
6094 check_func  access
6095 check_func_headers stdlib.h arc4random
6096 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6097 check_func  fcntl
6098 check_func  fork
6099 check_func  gethrtime
6100 check_func  getopt
6101 check_func  getrusage
6102 check_func  gettimeofday
6103 check_func  isatty
6104 check_func  mkstemp
6105 check_func  mmap
6106 check_func  mprotect
6107 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6108 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6109 check_func  sched_getaffinity
6110 check_func  setrlimit
6111 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6112 check_func  strerror_r
6113 check_func  sysconf
6114 check_func  sysctl
6115 check_func  usleep
6116
6117 check_func_headers conio.h kbhit
6118 check_func_headers io.h setmode
6119 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6120 check_func_headers mach/mach_time.h mach_absolute_time
6121 check_func_headers stdlib.h getenv
6122 check_func_headers sys/stat.h lstat
6123
6124 check_func_headers windows.h GetModuleHandle
6125 check_func_headers windows.h GetProcessAffinityMask
6126 check_func_headers windows.h GetProcessTimes
6127 check_func_headers windows.h GetStdHandle
6128 check_func_headers windows.h GetSystemTimeAsFileTime
6129 check_func_headers windows.h LoadLibrary
6130 check_func_headers windows.h MapViewOfFile
6131 check_func_headers windows.h PeekNamedPipe
6132 check_func_headers windows.h SetConsoleTextAttribute
6133 check_func_headers windows.h SetConsoleCtrlHandler
6134 check_func_headers windows.h SetDllDirectory
6135 check_func_headers windows.h Sleep
6136 check_func_headers windows.h VirtualAlloc
6137 check_func_headers glob.h glob
6138 enabled xlib &&
6139     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6140
6141 check_headers direct.h
6142 check_headers dirent.h
6143 check_headers dxgidebug.h
6144 check_headers dxva.h
6145 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6146 check_headers io.h
6147 check_headers linux/perf_event.h
6148 check_headers libcrystalhd/libcrystalhd_if.h
6149 check_headers malloc.h
6150 check_headers mftransform.h
6151 check_headers net/udplite.h
6152 check_headers poll.h
6153 check_headers sys/param.h
6154 check_headers sys/resource.h
6155 check_headers sys/select.h
6156 check_headers sys/time.h
6157 check_headers sys/un.h
6158 check_headers termios.h
6159 check_headers unistd.h
6160 check_headers valgrind/valgrind.h
6161 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6162 check_headers windows.h
6163 check_headers X11/extensions/XvMClib.h
6164 check_headers asm/types.h
6165
6166 # it seems there are versions of clang in some distros that try to use the
6167 # gcc headers, which explodes for stdatomic
6168 # so we also check that atomics actually work here
6169 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6170
6171 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6172 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6173     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6174 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6175 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6176 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6177
6178 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6179 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6180 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6181
6182 enabled appkit       && check_apple_framework AppKit
6183 enabled audiotoolbox && check_apple_framework AudioToolbox
6184 enabled avfoundation && check_apple_framework AVFoundation
6185 enabled coreimage    && check_apple_framework CoreImage
6186 enabled videotoolbox && check_apple_framework VideoToolbox
6187
6188 check_apple_framework CoreFoundation
6189 check_apple_framework CoreMedia
6190 check_apple_framework CoreVideo
6191 check_apple_framework CoreAudio
6192
6193 enabled avfoundation && {
6194     disable coregraphics applicationservices
6195     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6196     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6197
6198 enabled videotoolbox && {
6199     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6200     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6201     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6202     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6203     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6204     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6205 }
6206
6207 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6208
6209 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6210 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6211 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6212 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6213 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6214 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6215
6216 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6217 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6218
6219 if [ -z "$nvccflags" ]; then
6220     nvccflags=$nvccflags_default
6221 fi
6222
6223 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6224     nvccflags="$nvccflags -m64"
6225 else
6226     nvccflags="$nvccflags -m32"
6227 fi
6228
6229 if enabled cuda_nvcc; then
6230     nvccflags="$nvccflags -ptx"
6231 else
6232     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6233     check_nvcc cuda_llvm
6234 fi
6235
6236 if ! disabled ffnvcodec; then
6237     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6238     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6239       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6240       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6241       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6242 fi
6243
6244 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6245
6246 if ! disabled w32threads && ! enabled pthreads; then
6247     check_func_headers "windows.h process.h" _beginthreadex &&
6248         check_type "windows.h" CONDITION_VARIABLE &&
6249         check_type "windows.h" INIT_ONCE &&
6250         enable w32threads || disable w32threads
6251     if ! enabled w32threads && enabled winrt; then
6252         check_func_headers "windows.h" CreateThread &&
6253             enable w32threads || disable w32threads
6254     fi
6255 fi
6256
6257 # check for some common methods of building with pthread support
6258 # do this before the optional library checks as some of them require pthreads
6259 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6260     if check_lib pthreads pthread.h pthread_join   -pthread &&
6261        check_lib pthreads pthread.h pthread_create -pthread; then
6262         add_cflags -pthread
6263     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6264          check_lib pthreads pthread.h pthread_create -pthreads; then
6265         add_cflags -pthreads
6266     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6267          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6268         add_cflags -ldl -pthread
6269     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6270          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6271         :
6272     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6273          check_lib pthreads pthread.h pthread_create -lpthread; then
6274         :
6275     elif check_func pthread_join && check_func pthread_create; then
6276         enable pthreads
6277     fi
6278     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6279
6280     if enabled pthreads; then
6281         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6282         check_func pthread_cancel $pthreads_extralibs
6283     fi
6284 fi
6285
6286 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6287                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6288 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6289 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6290
6291 # On some systems dynamic loading requires no extra linker flags
6292 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6293
6294 check_lib libm math.h sin -lm
6295
6296 atan2f_args=2
6297 copysign_args=2
6298 hypot_args=2
6299 ldexpf_args=2
6300 powf_args=2
6301
6302 for func in $MATH_FUNCS; do
6303     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6304 done
6305
6306 for func in $COMPLEX_FUNCS; do
6307     eval check_complexfunc $func \${${func}_args:-1}
6308 done
6309
6310 # these are off by default, so fail if requested and not available
6311 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6312 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6313 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6314 enabled decklink          && { require_headers DeckLinkAPI.h &&
6315                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6316 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6317 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6318 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6319 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6320 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6321 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6322 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6323                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6324                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6325 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6326 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6327 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6328 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6329 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6330 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6331                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6332                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6333 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6334 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6335 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6336 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6337 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6338 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6339 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6340                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6341                                  warn "using libfdk without pkg-config"; } }
6342 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"
6343 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6344 enabled fontconfig        && enable libfontconfig
6345 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6346 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6347 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6348 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6349 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6350                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6351 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6352                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6353                                done || die "ERROR: libgsm not found"; }
6354 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6355 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6356 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6357 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6358 # While it may appear that require is being used as a pkg-config
6359 # fallback for libmfx, it is actually being used to detect a different
6360 # installation route altogether.  If libmfx is installed via the Intel
6361 # Media SDK or Intel Media Server Studio, these don't come with
6362 # pkg-config support.  Instead, users should make sure that the build
6363 # can find the libraries and headers through other means.
6364 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6365                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6366 if enabled libmfx; then
6367    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6368 fi
6369
6370 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6371 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6372 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6373                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6374 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6375                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6376                                die "ERROR: libnpp not found"; }
6377 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6378 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6379 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6380                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6381                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6382                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6383 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6384 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6385                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6386 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6387 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6388 enabled libopus           && {
6389     enabled libopus_decoder && {
6390         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6391     }
6392     enabled libopus_encoder && {
6393         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6394     }
6395 }
6396 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6397 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6398 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6399 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6400 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6401 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6402 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6403 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6404                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6405 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6406 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6407 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6408 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6409 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6410 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6411 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6412 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6413 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6414 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6415 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6416                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6417                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6418 enabled libuavs3d         && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
6419 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6420 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6421 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6422 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6423 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6424                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6425
6426 enabled libvpx            && {
6427     enabled libvpx_vp8_decoder && {
6428         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6429             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"
6430     }
6431     enabled libvpx_vp8_encoder && {
6432         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6433             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"
6434     }
6435     enabled libvpx_vp9_decoder && {
6436         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6437             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"
6438     }
6439     enabled libvpx_vp9_encoder && {
6440         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6441             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"
6442     }
6443     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6444         die "libvpx enabled but no supported decoders found"
6445     fi
6446 }
6447
6448 enabled libwebp           && {
6449     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6450     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6451 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6452                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6453                                  warn "using libx264 without pkg-config"; } } &&
6454                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6455                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6456 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6457                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6458 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6459 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6460 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6461 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6462 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6463 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6464                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6465                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6466 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6467 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6468                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6469                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6470                                die "ERROR: mbedTLS not found"; }
6471 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6472 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6473                                { ! enabled cross_compile &&
6474                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6475                                  add_ldflags -L/opt/vc/lib/ &&
6476                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6477                                die "ERROR: mmal not found" &&
6478                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6479 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6480                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6481                                die "ERROR: openal not found"; } &&
6482                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6483                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6484 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6485                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6486                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6487                                die "ERROR: opencl not found"; } &&
6488                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6489                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6490                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6491 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6492                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6493                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6494                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6495                                die "ERROR: opengl not found."
6496                              }
6497 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6498                                { ! enabled cross_compile &&
6499                                  add_cflags -isystem/opt/vc/include/IL &&
6500                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6501                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6502                              enable omx
6503 enabled omx               && require_headers OMX_Core.h
6504 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6505                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6506                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6507                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6508                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6509                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6510                                die "ERROR: openssl not found"; }
6511 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6512 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6513                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6514                                { enabled libdrm ||
6515                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6516                              }
6517 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6518
6519
6520 if enabled gcrypt; then
6521     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6522     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6523         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6524         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6525         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6526             die "ERROR: gcrypt not found"
6527         add_cflags $gcrypt_cflags
6528     else
6529         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6530     fi
6531 fi
6532
6533 if enabled sdl2; then
6534     SDL2_CONFIG="${cross_prefix}sdl2-config"
6535     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6536     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6537         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6538         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6539         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6540         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6541         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6542             enable sdl2
6543     fi
6544     if test $target_os = "mingw32"; then
6545         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6546     fi
6547 fi
6548
6549 if enabled decklink; then
6550     case $target_os in
6551         mingw32*|mingw64*|win32|win64)
6552             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6553             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6554             ;;
6555     esac
6556 fi
6557
6558 enabled securetransport &&
6559     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6560     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6561         disable securetransport
6562
6563 enabled securetransport &&
6564     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6565
6566 enabled schannel &&
6567     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6568     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6569     schannel_extralibs="-lsecur32" ||
6570         disable schannel
6571
6572 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6573 enabled makeinfo \
6574     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6575     && enable makeinfo_html || disable makeinfo_html
6576 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6577 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6578 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6579 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6580
6581 # check V4L2 codecs available in the API
6582 if enabled v4l2_m2m; then
6583     check_headers linux/fb.h
6584     check_headers linux/videodev2.h
6585     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6586     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6587     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6588     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6589     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6590     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6591     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6592     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6593     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6594     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6595     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6596 fi
6597
6598 check_headers sys/videoio.h
6599 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6600
6601 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6602 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6603 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6604 # w32api 3.12 had it defined wrong
6605 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6606
6607 check_type "dshow.h" IBaseFilter
6608
6609 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6610 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6611     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6612     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6613     check_headers "dev/ic/bt8xx.h"
6614
6615 if check_struct sys/soundcard.h audio_buf_info bytes; then
6616     enable_sanitized sys/soundcard.h
6617 else
6618     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6619     #include <sys/soundcard.h>
6620     audio_buf_info abc;
6621 EOF
6622 fi
6623
6624 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6625                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6626
6627 enabled libjack &&
6628     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6629
6630 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6631
6632 if enabled libcdio; then
6633     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6634     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6635     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6636     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6637     die "ERROR: No usable libcdio/cdparanoia found"
6638 fi
6639
6640 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6641     disable libxcb_shm libxcb_shape libxcb_xfixes
6642
6643 if enabled libxcb; then
6644     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6645     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6646     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6647 fi
6648
6649 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6650
6651 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6652 # the desktop api partition
6653 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6654 #ifdef WINAPI_FAMILY
6655 #include <winapifamily.h>
6656 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6657 #error desktop, not uwp
6658 #else
6659 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6660 #endif
6661 #else
6662 #error no family set
6663 #endif
6664 EOF
6665
6666 enabled libdrm &&
6667     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6668
6669 enabled vaapi &&
6670     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6671
6672 if enabled vaapi; then
6673     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6674
6675     if enabled xlib; then
6676         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6677     fi
6678
6679     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6680
6681     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6682     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6683     check_struct "va/va.h" "VADecPictureParameterBufferAV1" bit_depth_idx
6684     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6685     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6686     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6687     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6688     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6689     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6690 fi
6691
6692 if enabled_all opencl libdrm ; then
6693     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6694         enable opencl_drm_beignet
6695     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6696         enable opencl_drm_arm
6697 fi
6698
6699 if enabled_all opencl vaapi ; then
6700     if enabled opencl_drm_beignet ; then
6701         enable opencl_vaapi_beignet
6702     else
6703         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6704             enable opencl_vaapi_intel_media
6705     fi
6706 fi
6707
6708 if enabled_all opencl dxva2 ; then
6709     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6710         enable opencl_dxva2
6711 fi
6712
6713 if enabled_all opencl d3d11va ; then
6714     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6715         enable opencl_d3d11
6716 fi
6717
6718 enabled vdpau &&
6719     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6720
6721 enabled vdpau &&
6722     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6723
6724 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6725
6726 enabled vulkan &&
6727     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6728
6729 if enabled x86; then
6730     case $target_os in
6731         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6732             ;;
6733         *)
6734             disable ffnvcodec cuvid nvdec nvenc
6735             ;;
6736     esac
6737 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6738     case $target_os in
6739         linux)
6740             ;;
6741         *)
6742             disable ffnvcodec cuvid nvdec nvenc
6743             ;;
6744     esac
6745 else
6746     disable ffnvcodec cuvid nvdec nvenc
6747 fi
6748
6749 enabled ffnvcodec && enable cuda
6750
6751 enabled nvenc &&
6752     test_cc -I$source_path <<EOF || disable nvenc
6753 #include <ffnvcodec/nvEncodeAPI.h>
6754 NV_ENCODE_API_FUNCTION_LIST flist;
6755 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6756 int main(void) { return 0; }
6757 EOF
6758
6759 if enabled_any nvdec cuvid; then
6760     check_type "ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h" "CUVIDAV1PICPARAMS"
6761 fi
6762
6763 enabled amf &&
6764     check_cpp_condition amf "AMF/core/Version.h" \
6765         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6766
6767 # Funny iconv installations are not unusual, so check it after all flags have been set
6768 if enabled libc_iconv; then
6769     check_func_headers iconv.h iconv
6770 elif enabled iconv; then
6771     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6772 fi
6773
6774 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6775
6776 # add some useful compiler flags if supported
6777 check_cflags -Wdeclaration-after-statement
6778 check_cflags -Wall
6779 check_cflags -Wdisabled-optimization
6780 check_cflags -Wpointer-arith
6781 check_cflags -Wredundant-decls
6782 check_cflags -Wwrite-strings
6783 check_cflags -Wtype-limits
6784 check_cflags -Wundef
6785 check_cflags -Wmissing-prototypes
6786 check_cflags -Wno-pointer-to-int-cast
6787 check_cflags -Wstrict-prototypes
6788 check_cflags -Wempty-body
6789
6790 if enabled extra_warnings; then
6791     check_cflags -Wcast-qual
6792     check_cflags -Wextra
6793     check_cflags -Wpedantic
6794 fi
6795
6796 check_disable_warning(){
6797     warning_flag=-W${1#-Wno-}
6798     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6799 }
6800
6801 test_cflags -Werror=unused-command-line-argument &&
6802     append unknown_warning_flags "-Werror=unused-command-line-argument"
6803 test_cflags -Werror=unknown-warning-option &&
6804     append unknown_warning_flags "-Werror=unknown-warning-option"
6805
6806 check_disable_warning -Wno-parentheses
6807 check_disable_warning -Wno-switch
6808 check_disable_warning -Wno-format-zero-length
6809 check_disable_warning -Wno-pointer-sign
6810 check_disable_warning -Wno-unused-const-variable
6811 check_disable_warning -Wno-bool-operation
6812 check_disable_warning -Wno-char-subscripts
6813
6814 check_disable_warning_headers(){
6815     warning_flag=-W${1#-Wno-}
6816     test_cflags $warning_flag && add_cflags_headers $1
6817 }
6818
6819 check_disable_warning_headers -Wno-deprecated-declarations
6820 check_disable_warning_headers -Wno-unused-variable
6821
6822 test_cc <<EOF && enable blocks_extension
6823 void (^block)(void);
6824 EOF
6825
6826 # add some linker flags
6827 check_ldflags -Wl,--warn-common
6828 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6829 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6830 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6831
6832 # add some strip flags
6833 check_stripflags -x
6834
6835 enabled neon_clobber_test &&
6836     check_ldflags -Wl,--wrap,avcodec_open2              \
6837                   -Wl,--wrap,avcodec_decode_audio4      \
6838                   -Wl,--wrap,avcodec_decode_video2      \
6839                   -Wl,--wrap,avcodec_decode_subtitle2   \
6840                   -Wl,--wrap,avcodec_encode_audio2      \
6841                   -Wl,--wrap,avcodec_encode_video2      \
6842                   -Wl,--wrap,avcodec_encode_subtitle    \
6843                   -Wl,--wrap,avcodec_send_packet        \
6844                   -Wl,--wrap,avcodec_receive_packet     \
6845                   -Wl,--wrap,avcodec_send_frame         \
6846                   -Wl,--wrap,avcodec_receive_frame      \
6847                   -Wl,--wrap,swr_convert                \
6848                   -Wl,--wrap,avresample_convert ||
6849     disable neon_clobber_test
6850
6851 enabled xmm_clobber_test &&
6852     check_ldflags -Wl,--wrap,avcodec_open2              \
6853                   -Wl,--wrap,avcodec_decode_audio4      \
6854                   -Wl,--wrap,avcodec_decode_video2      \
6855                   -Wl,--wrap,avcodec_decode_subtitle2   \
6856                   -Wl,--wrap,avcodec_encode_audio2      \
6857                   -Wl,--wrap,avcodec_encode_video2      \
6858                   -Wl,--wrap,avcodec_encode_subtitle    \
6859                   -Wl,--wrap,avcodec_send_packet        \
6860                   -Wl,--wrap,avcodec_receive_packet     \
6861                   -Wl,--wrap,avcodec_send_frame         \
6862                   -Wl,--wrap,avcodec_receive_frame      \
6863                   -Wl,--wrap,swr_convert                \
6864                   -Wl,--wrap,avresample_convert         \
6865                   -Wl,--wrap,sws_scale ||
6866     disable xmm_clobber_test
6867
6868 check_ld "cc" proper_dce <<EOF
6869 extern const int array[512];
6870 static inline int func(void) { return array[0]; }
6871 int main(void) { return 0; }
6872 EOF
6873
6874 if enabled proper_dce; then
6875     echo "X { local: *; };" > $TMPV
6876     if test_ldflags -Wl,${version_script},$TMPV; then
6877         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6878         quotes='""'
6879         test_cc <<EOF && enable symver_asm_label
6880 void ff_foo(void) __asm__ ("av_foo@VERSION");
6881 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6882 EOF
6883         test_cc <<EOF && enable symver_gnu_asm
6884 __asm__(".symver ff_foo,av_foo@VERSION");
6885 void ff_foo(void) {}
6886 EOF
6887     fi
6888 fi
6889
6890 if [ -z "$optflags" ]; then
6891     if enabled small; then
6892         optflags=$cflags_size
6893     elif enabled optimizations; then
6894         optflags=$cflags_speed
6895     else
6896         optflags=$cflags_noopt
6897     fi
6898 fi
6899
6900 check_optflags(){
6901     check_cflags "$@"
6902     enabled lto && check_ldflags "$@"
6903 }
6904
6905 check_optflags $optflags
6906 check_optflags -fno-math-errno
6907 check_optflags -fno-signed-zeros
6908
6909 if enabled lto; then
6910     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6911     check_cflags  -flto
6912     check_ldflags -flto $cpuflags
6913     disable inline_asm_direct_symbol_refs
6914 fi
6915
6916 enabled ftrapv && check_cflags -ftrapv
6917
6918 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6919 int x;
6920 EOF
6921
6922
6923 if enabled icc; then
6924     # Just warnings, no remarks
6925     check_cflags -w1
6926     # -wd: Disable following warnings
6927     # 144, 167, 556: -Wno-pointer-sign
6928     # 188: enumerated type mixed with another type
6929     # 1292: attribute "foo" ignored
6930     # 1419: external declaration in primary source file
6931     # 10006: ignoring unknown option -fno-signed-zeros
6932     # 10148: ignoring unknown option -Wno-parentheses
6933     # 10156: ignoring option '-W'; no argument required
6934     # 13200: No EMMS instruction before call to function
6935     # 13203: No EMMS instruction before return from function
6936     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6937     # 11030: Warning unknown option --as-needed
6938     # 10156: ignoring option '-export'; no argument required
6939     check_ldflags -wd10156,11030
6940     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6941     enable ebp_available
6942     # The test above does not test linking
6943     enabled lto && disable symver_asm_label
6944     if enabled x86_32; then
6945         icc_version=$($cc -dumpversion)
6946         test ${icc_version%%.*} -ge 11 &&
6947             check_cflags -falign-stack=maintain-16-byte ||
6948             disable aligned_stack
6949     fi
6950 elif enabled gcc; then
6951     check_optflags -fno-tree-vectorize
6952     check_cflags -Werror=format-security
6953     check_cflags -Werror=implicit-function-declaration
6954     check_cflags -Werror=missing-prototypes
6955     check_cflags -Werror=return-type
6956     check_cflags -Werror=vla
6957     check_cflags -Wformat
6958     check_cflags -fdiagnostics-color=auto
6959     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6960     if enabled x86_32; then
6961         case $target_os in
6962         *bsd*)
6963             # BSDs don't guarantee a 16 byte aligned stack, but we can
6964             # request GCC to try to maintain 16 byte alignment throughout
6965             # function calls. Library entry points that might call assembly
6966             # functions align the stack. (The parameter means 2^4 bytes.)
6967             check_cflags -mpreferred-stack-boundary=4
6968             ;;
6969         esac
6970     fi
6971 elif enabled llvm_gcc; then
6972     check_cflags -mllvm -stack-alignment=16
6973 elif enabled clang; then
6974     if enabled x86_32; then
6975         # Clang doesn't support maintaining alignment without assuming the
6976         # same alignment in every function. If 16 byte alignment would be
6977         # enabled, one would also have to either add attribute_align_arg on
6978         # every single entry point into the libraries or enable -mstackrealign
6979         # (doing stack realignment in every single function).
6980         case $target_os in
6981         mingw32|win32|*bsd*)
6982             disable aligned_stack
6983             ;;
6984         *)
6985             check_cflags -mllvm -stack-alignment=16
6986             check_cflags -mstack-alignment=16
6987             ;;
6988         esac
6989     else
6990         check_cflags -mllvm -stack-alignment=16
6991         check_cflags -mstack-alignment=16
6992     fi
6993     check_cflags -Qunused-arguments
6994     check_cflags -Werror=implicit-function-declaration
6995     check_cflags -Werror=missing-prototypes
6996     check_cflags -Werror=return-type
6997 elif enabled cparser; then
6998     add_cflags -Wno-missing-variable-declarations
6999     add_cflags -Wno-empty-statement
7000 elif enabled armcc; then
7001     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
7002     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
7003     # 2523: use of inline assembly is deprecated
7004     add_cflags -W${armcc_opt},--diag_suppress=2523
7005     add_cflags -W${armcc_opt},--diag_suppress=1207
7006     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
7007     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
7008     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
7009     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
7010 elif enabled pathscale; then
7011     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
7012     disable inline_asm
7013 elif enabled_any msvc icl; then
7014     enabled x86_32 && disable aligned_stack
7015     enabled_all x86_32 debug && add_cflags -Oy-
7016     enabled debug && add_ldflags -debug
7017     enable pragma_deprecated
7018     if enabled icl; then
7019         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7020         # (correctly) on icl 13.x.
7021         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7022             add_cflags -Qansi-alias
7023         # Some inline asm is not compilable in debug
7024         if enabled debug; then
7025             disable ebp_available
7026             disable ebx_available
7027         fi
7028     fi
7029     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7030     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7031     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7032     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7033     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7034     # MSVC 2013 and newer can handle it fine.
7035     # If this declspec fails, force including stdlib.h before the restrict redefinition
7036     # happens in config.h.
7037     if [ $restrict_keyword != restrict ]; then
7038         test_cc <<EOF || add_cflags -FIstdlib.h
7039 __declspec($restrict_keyword) void *foo(int);
7040 EOF
7041     fi
7042     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7043     # Issue has been fixed in MSVC v19.00.24218.
7044     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7045         check_cflags -d2SSAOptimizer-
7046     # enable utf-8 source processing on VS2015 U2 and newer
7047     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7048         add_cflags -utf-8
7049 fi
7050
7051 for pfx in "" host_; do
7052     varname=${pfx%_}cc_type
7053     eval "type=\$$varname"
7054     if [ "$type" = "msvc" ]; then
7055         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7056 static inline int foo(int a) { return a; }
7057 EOF
7058     fi
7059 done
7060
7061 case $as_type in
7062     clang)
7063         add_asflags -Qunused-arguments
7064     ;;
7065 esac
7066
7067 case $ld_type in
7068     clang)
7069         check_ldflags -Qunused-arguments
7070     ;;
7071 esac
7072
7073 enable frame_thread_encoder
7074
7075 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7076
7077 check_deps $CONFIG_LIST       \
7078            $CONFIG_EXTRA      \
7079            $HAVE_LIST         \
7080            $ALL_COMPONENTS    \
7081
7082 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"
7083 enabled avresample && warn "Building with deprecated library libavresample"
7084
7085 case $target_os in
7086 haiku)
7087     disable memalign
7088     disable posix_memalign
7089     ;;
7090 *-dos|freedos|opendos)
7091     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7092         disable memalign
7093     fi
7094     ;;
7095 esac
7096
7097 flatten_extralibs(){
7098     nested_entries=
7099     list_name=$1
7100     eval list=\$${1}
7101     for entry in $list; do
7102         entry_copy=$entry
7103         resolve entry_copy
7104         flat_entries=
7105         for e in $entry_copy; do
7106             case $e in
7107                 *_extralibs) nested_entries="$nested_entries$e ";;
7108                           *) flat_entries="$flat_entries$e ";;
7109             esac
7110         done
7111         eval $entry="\$flat_entries"
7112     done
7113     append $list_name "$nested_entries"
7114
7115     resolve nested_entries
7116     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7117         flatten_extralibs $list_name
7118     fi
7119 }
7120
7121 flatten_extralibs_wrapper(){
7122     list_name=$1
7123     flatten_extralibs $list_name
7124     unique $list_name
7125     resolve $list_name
7126     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7127     eval printf \''%s'\' \""\$$list_name"\"
7128 }
7129
7130 for linkunit in $LIBRARY_LIST; do
7131     unset current_extralibs
7132     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7133     for comp in ${components}; do
7134         enabled $comp || continue
7135         comp_extralibs="${comp}_extralibs"
7136         append current_extralibs $comp_extralibs
7137     done
7138     eval prepend ${linkunit}_extralibs $current_extralibs
7139 done
7140
7141 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7142     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7143 done
7144
7145 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7146
7147 for thread in $THREADS_LIST; do
7148     if enabled $thread; then
7149         test -n "$thread_type" &&
7150             die "ERROR: Only one thread type must be selected." ||
7151             thread_type="$thread"
7152     fi
7153 done
7154
7155 if disabled stdatomic; then
7156     if enabled atomics_gcc; then
7157         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7158     elif enabled atomics_win32; then
7159         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7160     elif enabled atomics_suncc; then
7161         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7162     elif enabled pthreads; then
7163         add_compat atomics/pthread/stdatomic.o
7164         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7165     else
7166         enabled threads && die "Threading is enabled, but no atomics are available"
7167         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7168     fi
7169 fi
7170
7171 # Check if requested libraries were found.
7172 for lib in $AUTODETECT_LIBS; do
7173     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7174 done
7175
7176 enabled zlib && add_cppflags -DZLIB_CONST
7177
7178 # conditional library dependencies, in any order
7179 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7180 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7181 enabled afir_filter         && prepend avfilter_deps "avcodec"
7182 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7183 enabled aresample_filter    && prepend avfilter_deps "swresample"
7184 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7185 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7186 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7187 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7188 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7189 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7190 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7191 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7192 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7193 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7194 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7195 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7196 enabled pan_filter          && prepend avfilter_deps "swresample"
7197 enabled pp_filter           && prepend avfilter_deps "postproc"
7198 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7199 enabled resample_filter && prepend avfilter_deps "avresample"
7200 enabled sab_filter          && prepend avfilter_deps "swscale"
7201 enabled scale_filter    && prepend avfilter_deps "swscale"
7202 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7203 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7204 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7205 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7206 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7207 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7208 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7209 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7210 enabled spp_filter          && prepend avfilter_deps "avcodec"
7211 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7212 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7213 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7214 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7215
7216 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7217
7218 #FIXME
7219 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7220     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7221
7222 enabled opus_decoder    && prepend avcodec_deps "swresample"
7223
7224 # reorder the items at var $1 to align with the items order at var $2 .
7225 # die if an item at $1 is not at $2 .
7226 reorder_by(){
7227     eval rb_in=\$$1
7228     eval rb_ordered=\$$2
7229
7230     for rb in $rb_in; do
7231         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7232     done
7233
7234     rb_out=
7235     for rb in $rb_ordered; do
7236         is_in $rb $rb_in && rb_out="$rb_out$rb "
7237     done
7238     eval $1=\$rb_out
7239 }
7240
7241 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7242 # within a set of N items, N expansions are enough to expose a cycle.
7243 expand_deps(){
7244     unique ${1}_deps  # required for the early break test.
7245     for dummy in $LIBRARY_LIST; do  # N iteratios
7246         eval deps=\$${1}_deps
7247         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7248         unique ${1}_deps
7249         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7250     done
7251
7252     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7253     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7254 }
7255
7256 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7257 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7258
7259 map 'expand_deps $v' $LIBRARY_LIST
7260
7261 if test "$quiet" != "yes"; then
7262
7263 echo "install prefix            $prefix"
7264 echo "source path               $source_path"
7265 echo "C compiler                $cc"
7266 echo "C library                 $libc_type"
7267 if test "$host_cc" != "$cc"; then
7268     echo "host C compiler           $host_cc"
7269     echo "host C library            $host_libc_type"
7270 fi
7271 echo "ARCH                      $arch ($cpu)"
7272 if test "$build_suffix" != ""; then
7273     echo "build suffix              $build_suffix"
7274 fi
7275 if test "$progs_suffix" != ""; then
7276     echo "progs suffix              $progs_suffix"
7277 fi
7278 if test "$extra_version" != ""; then
7279     echo "version string suffix     $extra_version"
7280 fi
7281 echo "big-endian                ${bigendian-no}"
7282 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7283 if enabled x86; then
7284     echo "standalone assembly       ${x86asm-no}"
7285     echo "x86 assembler             ${x86asmexe}"
7286     echo "MMX enabled               ${mmx-no}"
7287     echo "MMXEXT enabled            ${mmxext-no}"
7288     echo "3DNow! enabled            ${amd3dnow-no}"
7289     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7290     echo "SSE enabled               ${sse-no}"
7291     echo "SSSE3 enabled             ${ssse3-no}"
7292     echo "AESNI enabled             ${aesni-no}"
7293     echo "AVX enabled               ${avx-no}"
7294     echo "AVX2 enabled              ${avx2-no}"
7295     echo "AVX-512 enabled           ${avx512-no}"
7296     echo "XOP enabled               ${xop-no}"
7297     echo "FMA3 enabled              ${fma3-no}"
7298     echo "FMA4 enabled              ${fma4-no}"
7299     echo "i686 features enabled     ${i686-no}"
7300     echo "CMOV is fast              ${fast_cmov-no}"
7301     echo "EBX available             ${ebx_available-no}"
7302     echo "EBP available             ${ebp_available-no}"
7303 fi
7304 if enabled aarch64; then
7305     echo "NEON enabled              ${neon-no}"
7306     echo "VFP enabled               ${vfp-no}"
7307 fi
7308 if enabled arm; then
7309     echo "ARMv5TE enabled           ${armv5te-no}"
7310     echo "ARMv6 enabled             ${armv6-no}"
7311     echo "ARMv6T2 enabled           ${armv6t2-no}"
7312     echo "VFP enabled               ${vfp-no}"
7313     echo "NEON enabled              ${neon-no}"
7314     echo "THUMB enabled             ${thumb-no}"
7315 fi
7316 if enabled mips; then
7317     echo "MIPS FPU enabled          ${mipsfpu-no}"
7318     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7319     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7320     echo "MIPS MSA enabled          ${msa-no}"
7321     echo "MIPS MSA2 enabled         ${msa2-no}"
7322     echo "LOONGSON MMI enabled      ${mmi-no}"
7323 fi
7324 if enabled ppc; then
7325     echo "AltiVec enabled           ${altivec-no}"
7326     echo "VSX enabled               ${vsx-no}"
7327     echo "POWER8 enabled            ${power8-no}"
7328     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7329     echo "dcbzl available           ${dcbzl-no}"
7330 fi
7331 echo "debug symbols             ${debug-no}"
7332 echo "strip symbols             ${stripping-no}"
7333 echo "optimize for size         ${small-no}"
7334 echo "optimizations             ${optimizations-no}"
7335 echo "static                    ${static-no}"
7336 echo "shared                    ${shared-no}"
7337 echo "postprocessing support    ${postproc-no}"
7338 echo "network support           ${network-no}"
7339 echo "threading support         ${thread_type-no}"
7340 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7341 echo "texi2html enabled         ${texi2html-no}"
7342 echo "perl enabled              ${perl-no}"
7343 echo "pod2man enabled           ${pod2man-no}"
7344 echo "makeinfo enabled          ${makeinfo-no}"
7345 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7346 test -n "$random_seed" &&
7347     echo "random seed               ${random_seed}"
7348 echo
7349
7350 echo "External libraries:"
7351 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7352 echo
7353
7354 echo "External libraries providing hardware acceleration:"
7355 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7356 echo
7357
7358 echo "Libraries:"
7359 print_enabled '' $LIBRARY_LIST | print_in_columns
7360 echo
7361
7362 echo "Programs:"
7363 print_enabled '' $PROGRAM_LIST | print_in_columns
7364 echo
7365
7366 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7367     echo "Enabled ${type}s:"
7368     eval list=\$$(toupper $type)_LIST
7369     print_enabled '_*' $list | print_in_columns
7370     echo
7371 done
7372
7373 if test -n "$ignore_tests"; then
7374     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7375     echo "Ignored FATE tests:"
7376     echo $ignore_tests | print_in_columns
7377     echo
7378 fi
7379
7380 echo "License: $license"
7381
7382 fi # test "$quiet" != "yes"
7383
7384 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7385     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7386         if disabled $cfg; then
7387             varname=${cfg}_disable_reason
7388             eval "warn \"Disabled $cfg because \$$varname\""
7389         fi
7390     done
7391 fi
7392
7393 if test -n "$WARNINGS"; then
7394     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7395     enabled fatal_warnings && exit 1
7396 fi
7397
7398 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7399
7400 esc(){
7401     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7402 }
7403
7404 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7405
7406 enabled stripping || strip="echo skipping strip"
7407 enabled stripping || striptype=""
7408
7409 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7410
7411 cat > ffbuild/config.mak <<EOF
7412 # Automatically generated by configure - do not modify!
7413 ifndef FFMPEG_CONFIG_MAK
7414 FFMPEG_CONFIG_MAK=1
7415 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7416 prefix=$prefix
7417 LIBDIR=\$(DESTDIR)$libdir
7418 SHLIBDIR=\$(DESTDIR)$shlibdir
7419 INCDIR=\$(DESTDIR)$incdir
7420 BINDIR=\$(DESTDIR)$bindir
7421 DATADIR=\$(DESTDIR)$datadir
7422 DOCDIR=\$(DESTDIR)$docdir
7423 MANDIR=\$(DESTDIR)$mandir
7424 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7425 INSTALL_NAME_DIR=$install_name_dir
7426 SRC_PATH=$source_path
7427 SRC_LINK=$source_link
7428 ifndef MAIN_MAKEFILE
7429 SRC_PATH:=\$(SRC_PATH:.%=..%)
7430 endif
7431 CC_IDENT=$cc_ident
7432 ARCH=$arch
7433 INTRINSICS=$intrinsics
7434 EXTERN_PREFIX=$extern_prefix
7435 CC=$cc
7436 CXX=$cxx
7437 AS=$as
7438 OBJCC=$objcc
7439 LD=$ld
7440 DEPCC=$dep_cc
7441 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7442 DEPAS=$as
7443 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7444 X86ASM=$x86asmexe
7445 DEPX86ASM=$x86asmexe
7446 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7447 AR=$ar
7448 ARFLAGS=$arflags
7449 AR_O=$ar_o
7450 AR_CMD=$ar
7451 NM_CMD=$nm
7452 RANLIB=$ranlib
7453 STRIP=$strip
7454 STRIPTYPE=$striptype
7455 NVCC=$nvcc
7456 CP=cp -p
7457 LN_S=$ln_s
7458 CPPFLAGS=$CPPFLAGS
7459 CFLAGS=$CFLAGS
7460 CXXFLAGS=$CXXFLAGS
7461 OBJCFLAGS=$OBJCFLAGS
7462 ASFLAGS=$ASFLAGS
7463 NVCCFLAGS=$nvccflags
7464 AS_C=$AS_C
7465 AS_O=$AS_O
7466 OBJCC_C=$OBJCC_C
7467 OBJCC_E=$OBJCC_E
7468 OBJCC_O=$OBJCC_O
7469 CC_C=$CC_C
7470 CC_E=$CC_E
7471 CC_O=$CC_O
7472 CXX_C=$CXX_C
7473 CXX_O=$CXX_O
7474 NVCC_C=$NVCC_C
7475 NVCC_O=$NVCC_O
7476 LD_O=$LD_O
7477 X86ASM_O=$X86ASM_O
7478 LD_LIB=$LD_LIB
7479 LD_PATH=$LD_PATH
7480 DLLTOOL=$dlltool
7481 WINDRES=$windres
7482 DEPWINDRES=$dep_cc
7483 DOXYGEN=$doxygen
7484 LDFLAGS=$LDFLAGS
7485 LDEXEFLAGS=$LDEXEFLAGS
7486 LDSOFLAGS=$LDSOFLAGS
7487 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7488 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7489 X86ASMFLAGS=$X86ASMFLAGS
7490 MSAFLAGS=$MSAFLAGS
7491 MMIFLAGS=$MMIFLAGS
7492 BUILDSUF=$build_suffix
7493 PROGSSUF=$progs_suffix
7494 FULLNAME=$FULLNAME
7495 LIBPREF=$LIBPREF
7496 LIBSUF=$LIBSUF
7497 LIBNAME=$LIBNAME
7498 SLIBPREF=$SLIBPREF
7499 SLIBSUF=$SLIBSUF
7500 EXESUF=$EXESUF
7501 EXTRA_VERSION=$extra_version
7502 CCDEP=$CCDEP
7503 CXXDEP=$CXXDEP
7504 CCDEP_FLAGS=$CCDEP_FLAGS
7505 ASDEP=$ASDEP
7506 ASDEP_FLAGS=$ASDEP_FLAGS
7507 X86ASMDEP=$X86ASMDEP
7508 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7509 CC_DEPFLAGS=$CC_DEPFLAGS
7510 AS_DEPFLAGS=$AS_DEPFLAGS
7511 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7512 HOSTCC=$host_cc
7513 HOSTLD=$host_ld
7514 HOSTCFLAGS=$host_cflags
7515 HOSTCPPFLAGS=$host_cppflags
7516 HOSTEXESUF=$HOSTEXESUF
7517 HOSTLDFLAGS=$host_ldflags
7518 HOSTEXTRALIBS=$host_extralibs
7519 DEPHOSTCC=$host_cc
7520 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7521 HOSTCCDEP=$HOSTCCDEP
7522 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7523 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7524 HOSTCC_C=$HOSTCC_C
7525 HOSTCC_O=$HOSTCC_O
7526 HOSTLD_O=$HOSTLD_O
7527 TARGET_EXEC=$target_exec $target_exec_args
7528 TARGET_PATH=$target_path
7529 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7530 CFLAGS-ffplay=${sdl2_cflags}
7531 CFLAGS_HEADERS=$CFLAGS_HEADERS
7532 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7533 EXTRALIBS=$extralibs
7534 COMPAT_OBJS=$compat_objs
7535 INSTALL=$install
7536 LIBTARGET=${LIBTARGET}
7537 SLIBNAME=${SLIBNAME}
7538 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7539 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7540 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7541 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7542 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7543 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7544 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7545 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7546 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7547 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7548 NOREDZONE_FLAGS=$noredzone_flags
7549 LIBFUZZER_PATH=$libfuzzer_path
7550 IGNORE_TESTS=$ignore_tests
7551 EOF
7552
7553 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7554
7555 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7556     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7557 done
7558
7559 cat > $TMPH <<EOF
7560 /* Automatically generated by configure - do not modify! */
7561 #ifndef FFMPEG_CONFIG_H
7562 #define FFMPEG_CONFIG_H
7563 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7564 #define FFMPEG_LICENSE "$(c_escape $license)"
7565 #define CONFIG_THIS_YEAR 2020
7566 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7567 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7568 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7569 #define av_restrict $restrict_keyword
7570 #define EXTERN_PREFIX "${extern_prefix}"
7571 #define EXTERN_ASM ${extern_prefix}
7572 #define BUILDSUF "$build_suffix"
7573 #define SLIBSUF "$SLIBSUF"
7574 #define HAVE_MMX2 HAVE_MMXEXT
7575 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7576 EOF
7577
7578 test -n "$assert_level" &&
7579     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7580
7581 test -n "$malloc_prefix" &&
7582     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7583
7584 if enabled x86asm; then
7585     append config_files $TMPASM
7586     cat > $TMPASM <<EOF
7587 ; Automatically generated by configure - do not modify!
7588 EOF
7589 fi
7590
7591 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7592
7593
7594 mkdir -p doc
7595 mkdir -p tests
7596 mkdir -p tests/api
7597 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7598
7599 print_config ARCH_   "$config_files" $ARCH_LIST
7600 print_config HAVE_   "$config_files" $HAVE_LIST
7601 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7602                                      $CONFIG_EXTRA      \
7603                                      $ALL_COMPONENTS    \
7604
7605 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7606 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7607
7608 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7609 cp_if_changed $TMPH config.h
7610 touch ffbuild/.config
7611
7612 enabled x86asm && cp_if_changed $TMPASM config.asm
7613
7614 cat > $TMPH <<EOF
7615 /* Generated by ffmpeg configure */
7616 #ifndef AVUTIL_AVCONFIG_H
7617 #define AVUTIL_AVCONFIG_H
7618 EOF
7619
7620 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7621
7622 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7623
7624 cp_if_changed $TMPH libavutil/avconfig.h
7625
7626 # full_filter_name_foo=vf_foo
7627 # full_filter_name_bar=asrc_bar
7628 # ...
7629 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7630
7631 # generate the lists of enabled components
7632 print_enabled_components(){
7633     file=$1
7634     struct_name=$2
7635     name=$3
7636     shift 3
7637     echo "static const $struct_name * const $name[] = {" > $TMPH
7638     for c in $*; do
7639         if enabled $c; then
7640             case $name in
7641                 filter_list)
7642                     eval c=\$full_filter_name_${c%_filter}
7643                 ;;
7644                 indev_list)
7645                     c=${c%_indev}_demuxer
7646                 ;;
7647                 outdev_list)
7648                     c=${c%_outdev}_muxer
7649                 ;;
7650             esac
7651             printf "    &ff_%s,\n" $c >> $TMPH
7652         fi
7653     done
7654     if [ "$name" = "filter_list" ]; then
7655         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7656             printf "    &ff_%s,\n" $c >> $TMPH
7657         done
7658     fi
7659     echo "    NULL };" >> $TMPH
7660     cp_if_changed $TMPH $file
7661 }
7662
7663 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7664 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7665 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7666 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7667 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7668 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7669 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7670 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7671 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7672
7673 # Settings for pkg-config files
7674
7675 cat > $TMPH <<EOF
7676 # Automatically generated by configure - do not modify!
7677 shared=$shared
7678 build_suffix=$build_suffix
7679 prefix=$prefix
7680 libdir=$libdir
7681 incdir=$incdir
7682 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7683 source_path=${source_path}
7684 LIBPREF=${LIBPREF}
7685 LIBSUF=${LIBSUF}
7686 extralibs_avutil="$avutil_extralibs"
7687 extralibs_avcodec="$avcodec_extralibs"
7688 extralibs_avformat="$avformat_extralibs"
7689 extralibs_avdevice="$avdevice_extralibs"
7690 extralibs_avfilter="$avfilter_extralibs"
7691 extralibs_avresample="$avresample_extralibs"
7692 extralibs_postproc="$postproc_extralibs"
7693 extralibs_swscale="$swscale_extralibs"
7694 extralibs_swresample="$swresample_extralibs"
7695 EOF
7696
7697 for lib in $LIBRARY_LIST; do
7698     lib_deps="$(eval echo \$${lib}_deps)"
7699     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7700 done
7701
7702 cp_if_changed $TMPH ffbuild/config.sh