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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 311   --disable-sndio          disable sndio support [autodetect]
 312   --disable-schannel       disable SChannel SSP, needed for TLS support on
 313                            Windows if openssl and gnutls are not used [autodetect]
 314   --disable-sdl2           disable sdl2 [autodetect]
 315   --disable-securetransport disable Secure Transport, needed for TLS support
 316                            on OSX if openssl and gnutls are not used [autodetect]
 317   --enable-vapoursynth     enable VapourSynth demuxer [no]
 318   --disable-xlib           disable xlib [autodetect]
 319   --disable-zlib           disable zlib [autodetect]
 320
 321   The following libraries provide various hardware acceleration features:
 322   --disable-amf            disable AMF video encoding code [autodetect]
 323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 326   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 327   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 328   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 329   --enable-libdrm          enable DRM code (Linux) [no]
 330   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 331   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 332   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 333   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 334   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 335   --enable-omx             enable OpenMAX IL code [no]
 336   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 337   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 338   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 339   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 340   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 341   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 342
 343 Toolchain options:
 344   --arch=ARCH              select architecture [$arch]
 345   --cpu=CPU                select the minimum required CPU (affects
 346                            instruction selection, may crash on older CPUs)
 347   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 348   --progs-suffix=SUFFIX    program name suffix []
 349   --enable-cross-compile   assume a cross-compiler is used
 350   --sysroot=PATH           root of cross-build tree
 351   --sysinclude=PATH        location of cross-build system headers
 352   --target-os=OS           compiler targets OS [$target_os]
 353   --target-exec=CMD        command to run executables on target
 354   --target-path=DIR        path to view of build directory on target
 355   --target-samples=DIR     path to samples directory on target
 356   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 357   --toolchain=NAME         set tool defaults according to NAME
 358                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 359                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 360                            valgrind-massif, valgrind-memcheck,
 361                            msvc, icl, gcov, llvm-cov, hardened)
 362   --nm=NM                  use nm tool NM [$nm_default]
 363   --ar=AR                  use archive tool AR [$ar_default]
 364   --as=AS                  use assembler AS [$as_default]
 365   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 366   --strip=STRIP            use strip tool STRIP [$strip_default]
 367   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 368   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 369   --cc=CC                  use C compiler CC [$cc_default]
 370   --cxx=CXX                use C compiler CXX [$cxx_default]
 371   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 372   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 373   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 374   --ld=LD                  use linker LD [$ld_default]
 375   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 376   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 377   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 378   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 379   --host-cc=HOSTCC         use host C compiler HOSTCC
 380   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 381   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 382   --host-ld=HOSTLD         use host linker HOSTLD
 383   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 384   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 385   --host-os=OS             compiler host OS [$target_os]
 386   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 387   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 388   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 389   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 390   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 391   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 392   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 393   --extra-version=STRING   version string suffix []
 394   --optflags=OPTFLAGS      override optimization-related compiler flags
 395   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 396   --build-suffix=SUFFIX    library name suffix []
 397   --enable-pic             build position-independent code
 398   --enable-thumb           compile for Thumb instruction set
 399   --enable-lto             use link-time optimization
 400   --env="ENV=override"     override the environment variables
 401
 402 Advanced options (experts only):
 403   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 404   --custom-allocator=NAME  use a supported custom allocator
 405   --disable-symver         disable symbol versioning
 406   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 407   --disable-safe-bitstream-reader
 408                            disable buffer boundary checking in bitreaders
 409                            (faster, but may crash)
 410   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 411
 412 Optimization options (experts only):
 413   --disable-asm            disable all assembly optimizations
 414   --disable-altivec        disable AltiVec optimizations
 415   --disable-vsx            disable VSX optimizations
 416   --disable-power8         disable POWER8 optimizations
 417   --disable-amd3dnow       disable 3DNow! optimizations
 418   --disable-amd3dnowext    disable 3DNow! extended optimizations
 419   --disable-mmx            disable MMX optimizations
 420   --disable-mmxext         disable MMXEXT optimizations
 421   --disable-sse            disable SSE optimizations
 422   --disable-sse2           disable SSE2 optimizations
 423   --disable-sse3           disable SSE3 optimizations
 424   --disable-ssse3          disable SSSE3 optimizations
 425   --disable-sse4           disable SSE4 optimizations
 426   --disable-sse42          disable SSE4.2 optimizations
 427   --disable-avx            disable AVX optimizations
 428   --disable-xop            disable XOP optimizations
 429   --disable-fma3           disable FMA3 optimizations
 430   --disable-fma4           disable FMA4 optimizations
 431   --disable-avx2           disable AVX2 optimizations
 432   --disable-avx512         disable AVX-512 optimizations
 433   --disable-aesni          disable AESNI optimizations
 434   --disable-armv5te        disable armv5te optimizations
 435   --disable-armv6          disable armv6 optimizations
 436   --disable-armv6t2        disable armv6t2 optimizations
 437   --disable-vfp            disable VFP optimizations
 438   --disable-neon           disable NEON optimizations
 439   --disable-inline-asm     disable use of inline assembly
 440   --disable-x86asm         disable use of standalone x86 assembly
 441   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 442   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 443   --disable-msa            disable MSA optimizations
 444   --disable-mipsfpu        disable floating point MIPS optimizations
 445   --disable-mmi            disable Loongson SIMD optimizations
 446   --disable-fast-unaligned consider unaligned accesses slow
 447
 448 Developer options (useful when working on FFmpeg itself):
 449   --disable-debug          disable debugging symbols
 450   --enable-debug=LEVEL     set the debug level [$debuglevel]
 451   --disable-optimizations  disable compiler optimizations
 452   --enable-extra-warnings  enable more compiler warnings
 453   --disable-stripping      disable stripping of executables and shared libraries
 454   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 455                            2 causes a slowdown at runtime.
 456   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 457   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 458                            leaks and errors, using the specified valgrind binary.
 459                            Cannot be combined with --target-exec
 460   --enable-ftrapv          Trap arithmetic overflows
 461   --samples=PATH           location of test samples for FATE, if not set use
 462                            \$FATE_SAMPLES at make invocation time.
 463   --enable-neon-clobber-test check NEON registers for clobbering (should be
 464                            used only for debugging purposes)
 465   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 466                            should be used only for debugging purposes)
 467   --enable-random          randomly enable/disable components
 468   --disable-random
 469   --enable-random=LIST     randomly enable/disable specific components or
 470   --disable-random=LIST    component groups. LIST is a comma-separated list
 471                            of NAME[:PROB] entries where NAME is a component
 472                            (group) and PROB the probability associated with
 473                            NAME (default 0.5).
 474   --random-seed=VALUE      seed value for --enable/disable-random
 475   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 476                            (only applies to --disable-optimizations builds)
 477   --enable-ossfuzz         Enable building fuzzer tool
 478   --libfuzzer=PATH         path to libfuzzer
 479   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 480                            in the name) of tests whose result is ignored
 481   --enable-linux-perf      enable Linux Performance Monitor API
 482
 483 NOTE: Object files are built at the place where configure is launched.
 484 EOF
 485   exit 0
 486 }
 487
 488 if test -t 1 && which tput >/dev/null 2>&1; then
 489     ncolors=$(tput colors)
 490     if test -n "$ncolors" && test $ncolors -ge 8; then
 491         bold_color=$(tput bold)
 492         warn_color=$(tput setaf 3)
 493         error_color=$(tput setaf 1)
 494         reset_color=$(tput sgr0)
 495     fi
 496     # 72 used instead of 80 since that's the default of pr
 497     ncols=$(tput cols)
 498 fi
 499 : ${ncols:=72}
 500
 501 log(){
 502     echo "$@" >> $logfile
 503 }
 504
 505 log_file(){
 506     log BEGIN "$1"
 507     log_file_i=1
 508     while IFS= read -r log_file_line; do
 509         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 510         log_file_i=$(($log_file_i+1))
 511     done < "$1" >> "$logfile"
 512     log END "$1"
 513 }
 514
 515 warn(){
 516     log "WARNING: $*"
 517     WARNINGS="${WARNINGS}WARNING: $*\n"
 518 }
 519
 520 die(){
 521     log "$@"
 522     echo "$error_color$bold_color$@$reset_color"
 523     cat <<EOF
 524
 525 If you think configure made a mistake, make sure you are using the latest
 526 version from Git.  If the latest version fails, report the problem to the
 527 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 528 EOF
 529     if disabled logging; then
 530         cat <<EOF
 531 Rerun configure with logging enabled (do not use --disable-logging), and
 532 include the log this produces with your report.
 533 EOF
 534     else
 535         cat <<EOF
 536 Include the log file "$logfile" produced by configure as this will help
 537 solve the problem.
 538 EOF
 539     fi
 540     exit 1
 541 }
 542
 543 # Avoid locale weirdness, besides we really just want to translate ASCII.
 544 toupper(){
 545     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 546 }
 547
 548 tolower(){
 549     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 550 }
 551
 552 c_escape(){
 553     echo "$*" | sed 's/["\\]/\\\0/g'
 554 }
 555
 556 sh_quote(){
 557     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 558     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 559     echo "$v"
 560 }
 561
 562 cleanws(){
 563     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 564 }
 565
 566 filter(){
 567     pat=$1
 568     shift
 569     for v; do
 570         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 571     done
 572 }
 573
 574 filter_out(){
 575     pat=$1
 576     shift
 577     for v; do
 578         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 579     done
 580 }
 581
 582 map(){
 583     m=$1
 584     shift
 585     for v; do eval $m; done
 586 }
 587
 588 add_suffix(){
 589     suffix=$1
 590     shift
 591     for v; do echo ${v}${suffix}; done
 592 }
 593
 594 remove_suffix(){
 595     suffix=$1
 596     shift
 597     for v; do echo ${v%$suffix}; done
 598 }
 599
 600 set_all(){
 601     value=$1
 602     shift
 603     for var in $*; do
 604         eval $var=$value
 605     done
 606 }
 607
 608 set_weak(){
 609     value=$1
 610     shift
 611     for var; do
 612         eval : \${$var:=$value}
 613     done
 614 }
 615
 616 sanitize_var_name(){
 617     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 618 }
 619
 620 set_sanitized(){
 621     var=$1
 622     shift
 623     eval $(sanitize_var_name "$var")='$*'
 624 }
 625
 626 get_sanitized(){
 627     eval echo \$$(sanitize_var_name "$1")
 628 }
 629
 630 pushvar(){
 631     for pvar in $*; do
 632         eval level=\${${pvar}_level:=0}
 633         eval ${pvar}_${level}="\$$pvar"
 634         eval ${pvar}_level=$(($level+1))
 635     done
 636 }
 637
 638 popvar(){
 639     for pvar in $*; do
 640         eval level=\${${pvar}_level:-0}
 641         test $level = 0 && continue
 642         eval level=$(($level-1))
 643         eval $pvar="\${${pvar}_${level}}"
 644         eval ${pvar}_level=$level
 645         eval unset ${pvar}_${level}
 646     done
 647 }
 648
 649 request(){
 650     for var in $*; do
 651         eval ${var}_requested=yes
 652         eval $var=
 653     done
 654 }
 655
 656 warn_if_gets_disabled(){
 657     for var in $*; do
 658         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 659     done
 660 }
 661
 662 enable(){
 663     set_all yes $*
 664 }
 665
 666 disable(){
 667     set_all no $*
 668 }
 669
 670 disable_with_reason(){
 671     disable $1
 672     eval "${1}_disable_reason=\"$2\""
 673     if requested $1; then
 674         die "ERROR: $1 requested, but $2"
 675     fi
 676 }
 677
 678 enable_weak(){
 679     set_weak yes $*
 680 }
 681
 682 disable_weak(){
 683     set_weak no $*
 684 }
 685
 686 enable_sanitized(){
 687     for var; do
 688         enable $(sanitize_var_name $var)
 689     done
 690 }
 691
 692 disable_sanitized(){
 693     for var; do
 694         disable $(sanitize_var_name $var)
 695     done
 696 }
 697
 698 do_enable_deep(){
 699     for var; do
 700         enabled $var && continue
 701         set -- $var
 702         eval enable_deep \$${var}_select
 703         var=$1
 704         eval enable_deep_weak \$${var}_suggest
 705     done
 706 }
 707
 708 enable_deep(){
 709     do_enable_deep $*
 710     enable $*
 711 }
 712
 713 enable_deep_weak(){
 714     for var; do
 715         disabled $var && continue
 716         set -- $var
 717         do_enable_deep $var
 718         var=$1
 719         enable_weak $var
 720     done
 721 }
 722
 723 requested(){
 724     test "${1#!}" = "$1" && op="=" || op="!="
 725     eval test "x\$${1#!}_requested" $op "xyes"
 726 }
 727
 728 enabled(){
 729     test "${1#!}" = "$1" && op="=" || op="!="
 730     eval test "x\$${1#!}" $op "xyes"
 731 }
 732
 733 disabled(){
 734     test "${1#!}" = "$1" && op="=" || op="!="
 735     eval test "x\$${1#!}" $op "xno"
 736 }
 737
 738 enabled_all(){
 739     for opt; do
 740         enabled $opt || return 1
 741     done
 742 }
 743
 744 disabled_all(){
 745     for opt; do
 746         disabled $opt || return 1
 747     done
 748 }
 749
 750 enabled_any(){
 751     for opt; do
 752         enabled $opt && return 0
 753     done
 754 }
 755
 756 disabled_any(){
 757     for opt; do
 758         disabled $opt && return 0
 759     done
 760     return 1
 761 }
 762
 763 set_default(){
 764     for opt; do
 765         eval : \${$opt:=\$${opt}_default}
 766     done
 767 }
 768
 769 is_in(){
 770     value=$1
 771     shift
 772     for var in $*; do
 773         [ $var = $value ] && return 0
 774     done
 775     return 1
 776 }
 777
 778 # The cfg loop is very hot (several thousands iterations), and in bash also
 779 # potentialy quite slow. Try to abort the iterations early, preferably without
 780 # calling functions. 70%+ of the time cfg is already done or without deps.
 781 check_deps(){
 782     for cfg; do
 783         eval [ x\$${cfg}_checking = xdone ] && continue
 784         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 785
 786         eval "
 787         dep_all=\$${cfg}_deps
 788         dep_any=\$${cfg}_deps_any
 789         dep_con=\$${cfg}_conflict
 790         dep_sel=\$${cfg}_select
 791         dep_sgs=\$${cfg}_suggest
 792         dep_ifa=\$${cfg}_if
 793         dep_ifn=\$${cfg}_if_any
 794         "
 795
 796         # most of the time here $cfg has no deps - avoid costly no-op work
 797         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 798             eval ${cfg}_checking=inprogress
 799
 800             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 801             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 802             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 803
 804             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 805             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 806             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 807             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 808             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 809             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 810
 811             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 812
 813             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 814                 # filter out library deps, these do not belong in extralibs
 815                 is_in $dep $LIBRARY_LIST && continue
 816                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 817             done
 818         fi
 819
 820         eval ${cfg}_checking=done
 821     done
 822 }
 823
 824 print_config(){
 825     pfx=$1
 826     files=$2
 827     shift 2
 828     map 'eval echo "$v \${$v:-no}"' "$@" |
 829     awk "BEGIN { split(\"$files\", files) }
 830         {
 831             c = \"$pfx\" toupper(\$1);
 832             v = \$2;
 833             sub(/yes/, 1, v);
 834             sub(/no/,  0, v);
 835             for (f in files) {
 836                 file = files[f];
 837                 if (file ~ /\\.h\$/) {
 838                     printf(\"#define %s %d\\n\", c, v) >>file;
 839                 } else if (file ~ /\\.asm\$/) {
 840                     printf(\"%%define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.mak\$/) {
 842                     n = -v ? \"\" : \"!\";
 843                     printf(\"%s%s=yes\\n\", n, c) >>file;
 844                 } else if (file ~ /\\.texi\$/) {
 845                     pre = -v ? \"\" : \"@c \";
 846                     yesno = \$2;
 847                     c2 = tolower(c);
 848                     gsub(/_/, \"-\", c2);
 849                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 850                 }
 851             }
 852         }"
 853 }
 854
 855 print_enabled(){
 856     suf=$1
 857     shift
 858     for v; do
 859         enabled $v && printf "%s\n" ${v%$suf}
 860     done
 861 }
 862
 863 append(){
 864     var=$1
 865     shift
 866     eval "$var=\"\$$var $*\""
 867 }
 868
 869 prepend(){
 870     var=$1
 871     shift
 872     eval "$var=\"$* \$$var\""
 873 }
 874
 875 reverse () {
 876     eval '
 877         reverse_out=
 878         for v in $'$1'; do
 879             reverse_out="$v $reverse_out"
 880         done
 881         '$1'=$reverse_out
 882     '
 883 }
 884
 885 # keeps the last occurence of each non-unique item
 886 unique(){
 887     unique_out=
 888     eval unique_in=\$$1
 889     reverse unique_in
 890     for v in $unique_in; do
 891         # " $unique_out" +space such that every item is surrounded with spaces
 892         case " $unique_out" in *" $v "*) continue; esac  # already in list
 893         unique_out="$unique_out$v "
 894     done
 895     reverse unique_out
 896     eval $1=\$unique_out
 897 }
 898
 899 resolve(){
 900     resolve_out=
 901     eval resolve_in=\$$1
 902     for v in $resolve_in; do
 903         eval 'resolve_out="$resolve_out$'$v' "'
 904     done
 905     eval $1=\$resolve_out
 906 }
 907
 908 add_cppflags(){
 909     append CPPFLAGS "$@"
 910 }
 911
 912 add_cflags(){
 913     append CFLAGS $($cflags_filter "$@")
 914 }
 915
 916 add_cflags_headers(){
 917     append CFLAGS_HEADERS $($cflags_filter "$@")
 918 }
 919
 920 add_cxxflags(){
 921     append CXXFLAGS $($cflags_filter "$@")
 922 }
 923
 924 add_objcflags(){
 925     append OBJCFLAGS $($objcflags_filter "$@")
 926 }
 927
 928 add_asflags(){
 929     append ASFLAGS $($asflags_filter "$@")
 930 }
 931
 932 add_ldflags(){
 933     append LDFLAGS $($ldflags_filter "$@")
 934 }
 935
 936 add_ldexeflags(){
 937     append LDEXEFLAGS $($ldflags_filter "$@")
 938 }
 939
 940 add_ldsoflags(){
 941     append LDSOFLAGS $($ldflags_filter "$@")
 942 }
 943
 944 add_extralibs(){
 945     prepend extralibs $($ldflags_filter "$@")
 946 }
 947
 948 add_stripflags(){
 949     append ASMSTRIPFLAGS "$@"
 950 }
 951
 952 add_host_cppflags(){
 953     append host_cppflags "$@"
 954 }
 955
 956 add_host_cflags(){
 957     append host_cflags $($host_cflags_filter "$@")
 958 }
 959
 960 add_host_ldflags(){
 961     append host_ldflags $($host_ldflags_filter "$@")
 962 }
 963
 964 add_compat(){
 965     append compat_objs $1
 966     shift
 967     map 'add_cppflags -D$v' "$@"
 968 }
 969
 970 test_cmd(){
 971     log "$@"
 972     "$@" >> $logfile 2>&1
 973 }
 974
 975 test_stat(){
 976     log test_stat "$@"
 977     stat "$1" >> $logfile 2>&1
 978 }
 979
 980 cc_e(){
 981     eval printf '%s\\n' $CC_E
 982 }
 983
 984 cc_o(){
 985     eval printf '%s\\n' $CC_O
 986 }
 987
 988 as_o(){
 989     eval printf '%s\\n' $AS_O
 990 }
 991
 992 x86asm_o(){
 993     eval printf '%s\\n' $X86ASM_O
 994 }
 995
 996 ld_o(){
 997     eval printf '%s\\n' $LD_O
 998 }
 999
1000 hostcc_e(){
1001     eval printf '%s\\n' $HOSTCC_E
1002 }
1003
1004 hostcc_o(){
1005     eval printf '%s\\n' $HOSTCC_O
1006 }
1007
1008 nvcc_o(){
1009     eval printf '%s\\n' $NVCC_O
1010 }
1011
1012 test_cc(){
1013     log test_cc "$@"
1014     cat > $TMPC
1015     log_file $TMPC
1016     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1017 }
1018
1019 test_cxx(){
1020     log test_cxx "$@"
1021     cat > $TMPCPP
1022     log_file $TMPCPP
1023     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1024 }
1025
1026 test_objcc(){
1027     log test_objcc "$@"
1028     cat > $TMPM
1029     log_file $TMPM
1030     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1031 }
1032
1033 test_nvcc(){
1034     log test_nvcc "$@"
1035     cat > $TMPCU
1036     log_file $TMPCU
1037     tmpcu_=$TMPCU
1038     tmpo_=$TMPO
1039     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1040     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1041 }
1042
1043 check_nvcc() {
1044     log check_nvcc "$@"
1045     test_nvcc <<EOF
1046 extern "C" {
1047     __global__ void hello(unsigned char *data) {}
1048 }
1049 EOF
1050 }
1051
1052 test_cpp(){
1053     log test_cpp "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1057 }
1058
1059 test_as(){
1060     log test_as "$@"
1061     cat > $TMPS
1062     log_file $TMPS
1063     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1064 }
1065
1066 test_x86asm(){
1067     log test_x86asm "$@"
1068     echo "$1" > $TMPASM
1069     log_file $TMPASM
1070     shift
1071     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1072 }
1073
1074 check_cmd(){
1075     log check_cmd "$@"
1076     cmd=$1
1077     disabled $cmd && return
1078     disable $cmd
1079     test_cmd $@ && enable $cmd
1080 }
1081
1082 check_as(){
1083     log check_as "$@"
1084     name=$1
1085     code=$2
1086     shift 2
1087     disable $name
1088     test_as $@ <<EOF && enable $name
1089 $code
1090 EOF
1091 }
1092
1093 check_inline_asm(){
1094     log check_inline_asm "$@"
1095     name="$1"
1096     code="$2"
1097     shift 2
1098     disable $name
1099     test_cc "$@" <<EOF && enable $name
1100 void foo(void){ __asm__ volatile($code); }
1101 EOF
1102 }
1103
1104 check_inline_asm_flags(){
1105     log check_inline_asm_flags "$@"
1106     name="$1"
1107     code="$2"
1108     flags=''
1109     shift 2
1110     while [ "$1" != "" ]; do
1111       append flags $1
1112       shift
1113     done;
1114     disable $name
1115     cat > $TMPC <<EOF
1116 void foo(void){ __asm__ volatile($code); }
1117 EOF
1118     log_file $TMPC
1119     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1120     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1121 }
1122
1123 check_insn(){
1124     log check_insn "$@"
1125     check_inline_asm ${1}_inline "\"$2\""
1126     check_as ${1}_external "$2"
1127 }
1128
1129 check_x86asm(){
1130     log check_x86asm "$@"
1131     name=$1
1132     shift
1133     disable $name
1134     test_x86asm "$@" && enable $name
1135 }
1136
1137 test_ld(){
1138     log test_ld "$@"
1139     type=$1
1140     shift 1
1141     flags=$(filter_out '-l*|*.so' $@)
1142     libs=$(filter '-l*|*.so' $@)
1143     test_$type $($cflags_filter $flags) || return
1144     flags=$($ldflags_filter $flags)
1145     libs=$($ldflags_filter $libs)
1146     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1147 }
1148
1149 check_ld(){
1150     log check_ld "$@"
1151     type=$1
1152     name=$2
1153     shift 2
1154     disable $name
1155     test_ld $type $@ && enable $name
1156 }
1157
1158 print_include(){
1159     hdr=$1
1160     test "${hdr%.h}" = "${hdr}" &&
1161         echo "#include $hdr"    ||
1162         echo "#include <$hdr>"
1163 }
1164
1165 test_code(){
1166     log test_code "$@"
1167     check=$1
1168     headers=$2
1169     code=$3
1170     shift 3
1171     {
1172         for hdr in $headers; do
1173             print_include $hdr
1174         done
1175         echo "int main(void) { $code; return 0; }"
1176     } | test_$check "$@"
1177 }
1178
1179 check_cppflags(){
1180     log check_cppflags "$@"
1181     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1182 #include <stdlib.h>
1183 EOF
1184 }
1185
1186 test_cflags(){
1187     log test_cflags "$@"
1188     set -- $($cflags_filter "$@")
1189     test_cc "$@" <<EOF
1190 int x;
1191 EOF
1192 }
1193
1194 check_cflags(){
1195     log check_cflags "$@"
1196     test_cflags "$@" && add_cflags "$@"
1197 }
1198
1199 check_cxxflags(){
1200     log check_cxxflags "$@"
1201     set -- $($cflags_filter "$@")
1202     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1203 int x;
1204 EOF
1205 }
1206
1207 test_objcflags(){
1208     log test_objcflags "$@"
1209     set -- $($objcflags_filter "$@")
1210     test_objcc "$@" <<EOF
1211 int x;
1212 EOF
1213 }
1214
1215 check_objcflags(){
1216     log check_objcflags "$@"
1217     test_objcflags "$@" && add_objcflags "$@"
1218 }
1219
1220 test_ldflags(){
1221     log test_ldflags "$@"
1222     set -- $($ldflags_filter "$@")
1223     test_ld "cc" "$@" <<EOF
1224 int main(void){ return 0; }
1225 EOF
1226 }
1227
1228 check_ldflags(){
1229     log check_ldflags "$@"
1230     test_ldflags "$@" && add_ldflags "$@"
1231 }
1232
1233 test_stripflags(){
1234     log test_stripflags "$@"
1235     # call test_cc to get a fresh TMPO
1236     test_cc <<EOF
1237 int main(void) { return 0; }
1238 EOF
1239     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1240 }
1241
1242 check_stripflags(){
1243     log check_stripflags "$@"
1244     test_stripflags "$@" && add_stripflags "$@"
1245 }
1246
1247 check_headers(){
1248     log check_headers "$@"
1249     headers=$1
1250     shift
1251     disable_sanitized $headers
1252     {
1253         for hdr in $headers; do
1254             print_include $hdr
1255         done
1256         echo "int x;"
1257     } | test_cpp "$@" && enable_sanitized $headers
1258 }
1259
1260 check_header_objcc(){
1261     log check_header_objcc "$@"
1262     rm -f -- "$TMPO"
1263     header=$1
1264     shift
1265     disable_sanitized $header
1266     {
1267        echo "#include <$header>"
1268        echo "int main(void) { return 0; }"
1269     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1270 }
1271
1272 check_apple_framework(){
1273     log check_apple_framework "$@"
1274     framework="$1"
1275     name="$(tolower $framework)"
1276     header="${framework}/${framework}.h"
1277     disable $name
1278     check_header_objcc $header &&
1279         enable $name && eval ${name}_extralibs='"-framework $framework"'
1280 }
1281
1282 check_func(){
1283     log check_func "$@"
1284     func=$1
1285     shift
1286     disable $func
1287     test_ld "cc" "$@" <<EOF && enable $func
1288 extern int $func();
1289 int main(void){ $func(); }
1290 EOF
1291 }
1292
1293 check_complexfunc(){
1294     log check_complexfunc "$@"
1295     func=$1
1296     narg=$2
1297     shift 2
1298     test $narg = 2 && args="f, g" || args="f * I"
1299     disable $func
1300     test_ld "cc" "$@" <<EOF && enable $func
1301 #include <complex.h>
1302 #include <math.h>
1303 float foo(complex float f, complex float g) { return $func($args); }
1304 int main(void){ return (int) foo; }
1305 EOF
1306 }
1307
1308 check_mathfunc(){
1309     log check_mathfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <math.h>
1317 float foo(float f, float g) { return $func($args); }
1318 int main(void){ return (int) foo; }
1319 EOF
1320 }
1321
1322 check_func_headers(){
1323     log check_func_headers "$@"
1324     headers=$1
1325     funcs=$2
1326     shift 2
1327     {
1328         for hdr in $headers; do
1329             print_include $hdr
1330         done
1331         echo "#include <stdint.h>"
1332         for func in $funcs; do
1333             echo "long check_$func(void) { return (long) $func; }"
1334         done
1335         echo "int main(void) { int ret = 0;"
1336         # LTO could optimize out the test functions without this
1337         for func in $funcs; do
1338             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1339         done
1340         echo "return ret; }"
1341     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1342 }
1343
1344 check_class_headers_cpp(){
1345     log check_class_headers_cpp "$@"
1346     headers=$1
1347     classes=$2
1348     shift 2
1349     {
1350         for hdr in $headers; do
1351             echo "#include <$hdr>"
1352         done
1353         echo "int main(void) { "
1354         i=1
1355         for class in $classes; do
1356             echo "$class obj$i;"
1357             i=$(expr $i + 1)
1358         done
1359         echo "return 0; }"
1360     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1361 }
1362
1363 test_cpp_condition(){
1364     log test_cpp_condition "$@"
1365     header=$1
1366     condition=$2
1367     shift 2
1368     test_cpp "$@" <<EOF
1369 #include <$header>
1370 #if !($condition)
1371 #error "unsatisfied condition: $condition"
1372 #endif
1373 EOF
1374 }
1375
1376 check_cpp_condition(){
1377     log check_cpp_condition "$@"
1378     name=$1
1379     shift 1
1380     disable $name
1381     test_cpp_condition "$@" && enable $name
1382 }
1383
1384 test_cflags_cc(){
1385     log test_cflags_cc "$@"
1386     flags=$1
1387     header=$2
1388     condition=$3
1389     shift 3
1390     set -- $($cflags_filter "$flags")
1391     test_cc "$@" <<EOF
1392 #include <$header>
1393 #if !($condition)
1394 #error "unsatisfied condition: $condition"
1395 #endif
1396 EOF
1397 }
1398
1399 check_lib(){
1400     log check_lib "$@"
1401     name="$1"
1402     headers="$2"
1403     funcs="$3"
1404     shift 3
1405     disable $name
1406     check_func_headers "$headers" "$funcs" "$@" &&
1407         enable $name && eval ${name}_extralibs="\$@"
1408 }
1409
1410 check_lib_cpp(){
1411     log check_lib_cpp "$@"
1412     name="$1"
1413     headers="$2"
1414     classes="$3"
1415     shift 3
1416     disable $name
1417     check_class_headers_cpp "$headers" "$classes" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 test_pkg_config(){
1422     log test_pkg_config "$@"
1423     name="$1"
1424     pkg_version="$2"
1425     pkg="${2%% *}"
1426     headers="$3"
1427     funcs="$4"
1428     shift 4
1429     disable $name
1430     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1431     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1432     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1433     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1434         enable $name &&
1435         set_sanitized "${name}_cflags"    $pkg_cflags &&
1436         set_sanitized "${name}_extralibs" $pkg_libs
1437 }
1438
1439 check_pkg_config(){
1440     log check_pkg_config "$@"
1441     name="$1"
1442     test_pkg_config "$@" &&
1443         eval add_cflags \$${name}_cflags
1444 }
1445
1446 test_exec(){
1447     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1448 }
1449
1450 check_exec_crash(){
1451     log check_exec_crash "$@"
1452     code=$(cat)
1453
1454     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1455     # are safe but may not be available everywhere.  Thus we use
1456     # raise(SIGTERM) instead.  The check is run in a subshell so we
1457     # can redirect the "Terminated" message from the shell.  SIGBUS
1458     # is not defined by standard C so it is used conditionally.
1459
1460     (test_exec "$@") >> $logfile 2>&1 <<EOF
1461 #include <signal.h>
1462 static void sighandler(int sig){
1463     raise(SIGTERM);
1464 }
1465 int foo(void){
1466     $code
1467 }
1468 int (*func_ptr)(void) = foo;
1469 int main(void){
1470     signal(SIGILL, sighandler);
1471     signal(SIGFPE, sighandler);
1472     signal(SIGSEGV, sighandler);
1473 #ifdef SIGBUS
1474     signal(SIGBUS, sighandler);
1475 #endif
1476     return func_ptr();
1477 }
1478 EOF
1479 }
1480
1481 check_type(){
1482     log check_type "$@"
1483     headers=$1
1484     type=$2
1485     shift 2
1486     disable_sanitized "$type"
1487     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1488 }
1489
1490 check_struct(){
1491     log check_struct "$@"
1492     headers=$1
1493     struct=$2
1494     member=$3
1495     shift 3
1496     disable_sanitized "${struct}_${member}"
1497     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1498         enable_sanitized "${struct}_${member}"
1499 }
1500
1501 check_builtin(){
1502     log check_builtin "$@"
1503     name=$1
1504     headers=$2
1505     builtin=$3
1506     shift 3
1507     disable "$name"
1508     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1509 }
1510
1511 check_compile_assert(){
1512     log check_compile_assert "$@"
1513     name=$1
1514     headers=$2
1515     condition=$3
1516     shift 3
1517     disable "$name"
1518     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1519 }
1520
1521 check_cc(){
1522     log check_cc "$@"
1523     name=$1
1524     shift
1525     disable "$name"
1526     test_code cc "$@" && enable "$name"
1527 }
1528
1529 require(){
1530     log require "$@"
1531     name_version="$1"
1532     name="${1%% *}"
1533     shift
1534     check_lib $name "$@" || die "ERROR: $name_version not found"
1535 }
1536
1537 require_cc(){
1538     log require_cc "$@"
1539     name="$1"
1540     check_cc "$@" || die "ERROR: $name failed"
1541 }
1542
1543 require_cpp(){
1544     name="$1"
1545     headers="$2"
1546     classes="$3"
1547     shift 3
1548     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1549 }
1550
1551 require_headers(){
1552     log require_headers "$@"
1553     headers="$1"
1554     check_headers "$@" || die "ERROR: $headers not found"
1555 }
1556
1557 require_cpp_condition(){
1558     log require_cpp_condition "$@"
1559     condition="$3"
1560     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1561 }
1562
1563 require_pkg_config(){
1564     log require_pkg_config "$@"
1565     pkg_version="$2"
1566     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1567 }
1568
1569 test_host_cc(){
1570     log test_host_cc "$@"
1571     cat > $TMPC
1572     log_file $TMPC
1573     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1574 }
1575
1576 test_host_cpp(){
1577     log test_host_cpp "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1581 }
1582
1583 check_host_cppflags(){
1584     log check_host_cppflags "$@"
1585     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1586 #include <stdlib.h>
1587 EOF
1588 }
1589
1590 check_host_cflags(){
1591     log check_host_cflags "$@"
1592     set -- $($host_cflags_filter "$@")
1593     test_host_cc "$@" <<EOF && append host_cflags "$@"
1594 int x;
1595 EOF
1596 }
1597
1598 test_host_cpp_condition(){
1599     log test_host_cpp_condition "$@"
1600     header=$1
1601     condition=$2
1602     shift 2
1603     test_host_cpp "$@" <<EOF
1604 #include <$header>
1605 #if !($condition)
1606 #error "unsatisfied condition: $condition"
1607 #endif
1608 EOF
1609 }
1610
1611 check_host_cpp_condition(){
1612     log check_host_cpp_condition "$@"
1613     name=$1
1614     shift 1
1615     disable $name
1616     test_host_cpp_condition "$@" && enable $name
1617 }
1618
1619 cp_if_changed(){
1620     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1621     mkdir -p "$(dirname $2)"
1622     cp -f "$1" "$2"
1623 }
1624
1625 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1626 # system-dependent things.
1627
1628 AVCODEC_COMPONENTS="
1629     bsfs
1630     decoders
1631     encoders
1632     hwaccels
1633     parsers
1634 "
1635
1636 AVDEVICE_COMPONENTS="
1637     indevs
1638     outdevs
1639 "
1640
1641 AVFILTER_COMPONENTS="
1642     filters
1643 "
1644
1645 AVFORMAT_COMPONENTS="
1646     demuxers
1647     muxers
1648     protocols
1649 "
1650
1651 COMPONENT_LIST="
1652     $AVCODEC_COMPONENTS
1653     $AVDEVICE_COMPONENTS
1654     $AVFILTER_COMPONENTS
1655     $AVFORMAT_COMPONENTS
1656 "
1657
1658 EXAMPLE_LIST="
1659     avio_dir_cmd_example
1660     avio_reading_example
1661     decode_audio_example
1662     decode_video_example
1663     demuxing_decoding_example
1664     encode_audio_example
1665     encode_video_example
1666     extract_mvs_example
1667     filter_audio_example
1668     filtering_audio_example
1669     filtering_video_example
1670     http_multiclient_example
1671     hw_decode_example
1672     metadata_example
1673     muxing_example
1674     qsvdec_example
1675     remuxing_example
1676     resampling_audio_example
1677     scaling_video_example
1678     transcode_aac_example
1679     transcoding_example
1680     vaapi_encode_example
1681     vaapi_transcode_example
1682 "
1683
1684 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1685     alsa
1686     appkit
1687     avfoundation
1688     bzlib
1689     coreimage
1690     iconv
1691     libxcb
1692     libxcb_shm
1693     libxcb_shape
1694     libxcb_xfixes
1695     lzma
1696     schannel
1697     sdl2
1698     securetransport
1699     sndio
1700     xlib
1701     zlib
1702 "
1703
1704 EXTERNAL_LIBRARY_GPL_LIST="
1705     avisynth
1706     frei0r
1707     libcdio
1708     libdavs2
1709     librubberband
1710     libvidstab
1711     libx264
1712     libx265
1713     libxavs
1714     libxavs2
1715     libxvid
1716 "
1717
1718 EXTERNAL_LIBRARY_NONFREE_LIST="
1719     decklink
1720     libfdk_aac
1721     openssl
1722     libtls
1723 "
1724
1725 EXTERNAL_LIBRARY_VERSION3_LIST="
1726     gmp
1727     libaribb24
1728     liblensfun
1729     libopencore_amrnb
1730     libopencore_amrwb
1731     libvmaf
1732     libvo_amrwbenc
1733     mbedtls
1734     rkmpp
1735 "
1736
1737 EXTERNAL_LIBRARY_GPLV3_LIST="
1738     libsmbclient
1739 "
1740
1741 EXTERNAL_LIBRARY_LIST="
1742     $EXTERNAL_LIBRARY_GPL_LIST
1743     $EXTERNAL_LIBRARY_NONFREE_LIST
1744     $EXTERNAL_LIBRARY_VERSION3_LIST
1745     $EXTERNAL_LIBRARY_GPLV3_LIST
1746     chromaprint
1747     gcrypt
1748     gnutls
1749     jni
1750     ladspa
1751     libaom
1752     libass
1753     libbluray
1754     libbs2b
1755     libcaca
1756     libcelt
1757     libcodec2
1758     libdav1d
1759     libdc1394
1760     libdrm
1761     libflite
1762     libfontconfig
1763     libfreetype
1764     libfribidi
1765     libgme
1766     libgsm
1767     libiec61883
1768     libilbc
1769     libjack
1770     libklvanc
1771     libkvazaar
1772     libmodplug
1773     libmp3lame
1774     libmysofa
1775     libopencv
1776     libopenh264
1777     libopenjpeg
1778     libopenmpt
1779     libopus
1780     libpulse
1781     librsvg
1782     librtmp
1783     libshine
1784     libsmbclient
1785     libsnappy
1786     libsoxr
1787     libspeex
1788     libsrt
1789     libssh
1790     libtensorflow
1791     libtesseract
1792     libtheora
1793     libtwolame
1794     libv4l2
1795     libvorbis
1796     libvpx
1797     libwavpack
1798     libwebp
1799     libxml2
1800     libzimg
1801     libzmq
1802     libzvbi
1803     lv2
1804     mediacodec
1805     openal
1806     opengl
1807     pocketsphinx
1808     vapoursynth
1809 "
1810
1811 HWACCEL_AUTODETECT_LIBRARY_LIST="
1812     amf
1813     audiotoolbox
1814     crystalhd
1815     cuda
1816     cuvid
1817     d3d11va
1818     dxva2
1819     ffnvcodec
1820     nvdec
1821     nvenc
1822     vaapi
1823     vdpau
1824     videotoolbox
1825     v4l2_m2m
1826     xvmc
1827 "
1828
1829 # catchall list of things that require external libs to link
1830 EXTRALIBS_LIST="
1831     cpu_init
1832     cws2fws
1833 "
1834
1835 HWACCEL_LIBRARY_NONFREE_LIST="
1836     cuda_nvcc
1837     cuda_sdk
1838     libnpp
1839 "
1840
1841 HWACCEL_LIBRARY_LIST="
1842     $HWACCEL_LIBRARY_NONFREE_LIST
1843     libmfx
1844     mmal
1845     omx
1846     opencl
1847 "
1848
1849 DOCUMENT_LIST="
1850     doc
1851     htmlpages
1852     manpages
1853     podpages
1854     txtpages
1855 "
1856
1857 FEATURE_LIST="
1858     ftrapv
1859     gray
1860     hardcoded_tables
1861     omx_rpi
1862     runtime_cpudetect
1863     safe_bitstream_reader
1864     shared
1865     small
1866     static
1867     swscale_alpha
1868 "
1869
1870 # this list should be kept in linking order
1871 LIBRARY_LIST="
1872     avdevice
1873     avfilter
1874     swscale
1875     postproc
1876     avformat
1877     avcodec
1878     swresample
1879     avresample
1880     avutil
1881 "
1882
1883 LICENSE_LIST="
1884     gpl
1885     nonfree
1886     version3
1887 "
1888
1889 PROGRAM_LIST="
1890     ffplay
1891     ffprobe
1892     ffmpeg
1893 "
1894
1895 SUBSYSTEM_LIST="
1896     dct
1897     dwt
1898     error_resilience
1899     faan
1900     fast_unaligned
1901     fft
1902     lsp
1903     lzo
1904     mdct
1905     pixelutils
1906     network
1907     rdft
1908 "
1909
1910 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1911 CONFIG_LIST="
1912     $DOCUMENT_LIST
1913     $EXAMPLE_LIST
1914     $EXTERNAL_LIBRARY_LIST
1915     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1916     $HWACCEL_LIBRARY_LIST
1917     $HWACCEL_AUTODETECT_LIBRARY_LIST
1918     $FEATURE_LIST
1919     $LICENSE_LIST
1920     $LIBRARY_LIST
1921     $PROGRAM_LIST
1922     $SUBSYSTEM_LIST
1923     autodetect
1924     fontconfig
1925     linux_perf
1926     memory_poisoning
1927     neon_clobber_test
1928     ossfuzz
1929     pic
1930     thumb
1931     valgrind_backtrace
1932     xmm_clobber_test
1933     $COMPONENT_LIST
1934 "
1935
1936 THREADS_LIST="
1937     pthreads
1938     os2threads
1939     w32threads
1940 "
1941
1942 ATOMICS_LIST="
1943     atomics_gcc
1944     atomics_suncc
1945     atomics_win32
1946 "
1947
1948 AUTODETECT_LIBS="
1949     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1950     $HWACCEL_AUTODETECT_LIBRARY_LIST
1951     $THREADS_LIST
1952 "
1953
1954 ARCH_LIST="
1955     aarch64
1956     alpha
1957     arm
1958     avr32
1959     avr32_ap
1960     avr32_uc
1961     bfin
1962     ia64
1963     m68k
1964     mips
1965     mips64
1966     parisc
1967     ppc
1968     ppc64
1969     s390
1970     sh4
1971     sparc
1972     sparc64
1973     tilegx
1974     tilepro
1975     tomi
1976     x86
1977     x86_32
1978     x86_64
1979 "
1980
1981 ARCH_EXT_LIST_ARM="
1982     armv5te
1983     armv6
1984     armv6t2
1985     armv8
1986     neon
1987     vfp
1988     vfpv3
1989     setend
1990 "
1991
1992 ARCH_EXT_LIST_MIPS="
1993     mipsfpu
1994     mips32r2
1995     mips32r5
1996     mips64r2
1997     mips32r6
1998     mips64r6
1999     mipsdsp
2000     mipsdspr2
2001     msa
2002 "
2003
2004 ARCH_EXT_LIST_LOONGSON="
2005     loongson2
2006     loongson3
2007     mmi
2008 "
2009
2010 ARCH_EXT_LIST_X86_SIMD="
2011     aesni
2012     amd3dnow
2013     amd3dnowext
2014     avx
2015     avx2
2016     avx512
2017     fma3
2018     fma4
2019     mmx
2020     mmxext
2021     sse
2022     sse2
2023     sse3
2024     sse4
2025     sse42
2026     ssse3
2027     xop
2028 "
2029
2030 ARCH_EXT_LIST_PPC="
2031     altivec
2032     dcbzl
2033     ldbrx
2034     power8
2035     ppc4xx
2036     vsx
2037 "
2038
2039 ARCH_EXT_LIST_X86="
2040     $ARCH_EXT_LIST_X86_SIMD
2041     cpunop
2042     i686
2043 "
2044
2045 ARCH_EXT_LIST="
2046     $ARCH_EXT_LIST_ARM
2047     $ARCH_EXT_LIST_PPC
2048     $ARCH_EXT_LIST_X86
2049     $ARCH_EXT_LIST_MIPS
2050     $ARCH_EXT_LIST_LOONGSON
2051 "
2052
2053 ARCH_FEATURES="
2054     aligned_stack
2055     fast_64bit
2056     fast_clz
2057     fast_cmov
2058     local_aligned
2059     simd_align_16
2060     simd_align_32
2061     simd_align_64
2062 "
2063
2064 BUILTIN_LIST="
2065     atomic_cas_ptr
2066     machine_rw_barrier
2067     MemoryBarrier
2068     mm_empty
2069     rdtsc
2070     sem_timedwait
2071     sync_val_compare_and_swap
2072 "
2073 HAVE_LIST_CMDLINE="
2074     inline_asm
2075     symver
2076     x86asm
2077 "
2078
2079 HAVE_LIST_PUB="
2080     bigendian
2081     fast_unaligned
2082 "
2083
2084 HEADERS_LIST="
2085     arpa_inet_h
2086     asm_types_h
2087     cdio_paranoia_h
2088     cdio_paranoia_paranoia_h
2089     cuda_h
2090     dispatch_dispatch_h
2091     dev_bktr_ioctl_bt848_h
2092     dev_bktr_ioctl_meteor_h
2093     dev_ic_bt8xx_h
2094     dev_video_bktr_ioctl_bt848_h
2095     dev_video_meteor_ioctl_meteor_h
2096     direct_h
2097     dirent_h
2098     dxgidebug_h
2099     dxva_h
2100     ES2_gl_h
2101     gsm_h
2102     io_h
2103     linux_perf_event_h
2104     machine_ioctl_bt848_h
2105     machine_ioctl_meteor_h
2106     malloc_h
2107     opencv2_core_core_c_h
2108     OpenGL_gl3_h
2109     poll_h
2110     sys_param_h
2111     sys_resource_h
2112     sys_select_h
2113     sys_soundcard_h
2114     sys_time_h
2115     sys_un_h
2116     sys_videoio_h
2117     termios_h
2118     udplite_h
2119     unistd_h
2120     valgrind_valgrind_h
2121     windows_h
2122     winsock2_h
2123 "
2124
2125 INTRINSICS_LIST="
2126     intrinsics_neon
2127 "
2128
2129 COMPLEX_FUNCS="
2130     cabs
2131     cexp
2132 "
2133
2134 MATH_FUNCS="
2135     atanf
2136     atan2f
2137     cbrt
2138     cbrtf
2139     copysign
2140     cosf
2141     erf
2142     exp2
2143     exp2f
2144     expf
2145     hypot
2146     isfinite
2147     isinf
2148     isnan
2149     ldexpf
2150     llrint
2151     llrintf
2152     log2
2153     log2f
2154     log10f
2155     lrint
2156     lrintf
2157     powf
2158     rint
2159     round
2160     roundf
2161     sinf
2162     trunc
2163     truncf
2164 "
2165
2166 SYSTEM_FEATURES="
2167     dos_paths
2168     libc_msvcrt
2169     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2170     section_data_rel_ro
2171     threads
2172     uwp
2173     winrt
2174 "
2175
2176 SYSTEM_FUNCS="
2177     access
2178     aligned_malloc
2179     arc4random
2180     clock_gettime
2181     closesocket
2182     CommandLineToArgvW
2183     fcntl
2184     getaddrinfo
2185     gethrtime
2186     getopt
2187     GetProcessAffinityMask
2188     GetProcessMemoryInfo
2189     GetProcessTimes
2190     getrusage
2191     GetSystemTimeAsFileTime
2192     gettimeofday
2193     glob
2194     glXGetProcAddress
2195     gmtime_r
2196     inet_aton
2197     isatty
2198     kbhit
2199     localtime_r
2200     lstat
2201     lzo1x_999_compress
2202     mach_absolute_time
2203     MapViewOfFile
2204     memalign
2205     mkstemp
2206     mmap
2207     mprotect
2208     nanosleep
2209     PeekNamedPipe
2210     posix_memalign
2211     pthread_cancel
2212     sched_getaffinity
2213     SecItemImport
2214     SetConsoleTextAttribute
2215     SetConsoleCtrlHandler
2216     setmode
2217     setrlimit
2218     Sleep
2219     strerror_r
2220     sysconf
2221     sysctl
2222     usleep
2223     UTGetOSTypeFromString
2224     VirtualAlloc
2225     wglGetProcAddress
2226 "
2227
2228 SYSTEM_LIBRARIES="
2229     bcrypt
2230     vaapi_drm
2231     vaapi_x11
2232     vdpau_x11
2233 "
2234
2235 TOOLCHAIN_FEATURES="
2236     as_arch_directive
2237     as_dn_directive
2238     as_fpu_directive
2239     as_func
2240     as_object_arch
2241     asm_mod_q
2242     blocks_extension
2243     ebp_available
2244     ebx_available
2245     gnu_as
2246     gnu_windres
2247     ibm_asm
2248     inline_asm_direct_symbol_refs
2249     inline_asm_labels
2250     inline_asm_nonlocal_labels
2251     pragma_deprecated
2252     rsync_contimeout
2253     symver_asm_label
2254     symver_gnu_asm
2255     vfp_args
2256     xform_asm
2257     xmm_clobbers
2258 "
2259
2260 TYPES_LIST="
2261     kCMVideoCodecType_HEVC
2262     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2263     socklen_t
2264     struct_addrinfo
2265     struct_group_source_req
2266     struct_ip_mreq_source
2267     struct_ipv6_mreq
2268     struct_msghdr_msg_flags
2269     struct_pollfd
2270     struct_rusage_ru_maxrss
2271     struct_sctp_event_subscribe
2272     struct_sockaddr_in6
2273     struct_sockaddr_sa_len
2274     struct_sockaddr_storage
2275     struct_stat_st_mtim_tv_nsec
2276     struct_v4l2_frmivalenum_discrete
2277 "
2278
2279 HAVE_LIST="
2280     $ARCH_EXT_LIST
2281     $(add_suffix _external $ARCH_EXT_LIST)
2282     $(add_suffix _inline   $ARCH_EXT_LIST)
2283     $ARCH_FEATURES
2284     $BUILTIN_LIST
2285     $COMPLEX_FUNCS
2286     $HAVE_LIST_CMDLINE
2287     $HAVE_LIST_PUB
2288     $HEADERS_LIST
2289     $INTRINSICS_LIST
2290     $MATH_FUNCS
2291     $SYSTEM_FEATURES
2292     $SYSTEM_FUNCS
2293     $SYSTEM_LIBRARIES
2294     $THREADS_LIST
2295     $TOOLCHAIN_FEATURES
2296     $TYPES_LIST
2297     makeinfo
2298     makeinfo_html
2299     opencl_d3d11
2300     opencl_drm_arm
2301     opencl_drm_beignet
2302     opencl_dxva2
2303     opencl_vaapi_beignet
2304     opencl_vaapi_intel_media
2305     perl
2306     pod2man
2307     texi2html
2308 "
2309
2310 # options emitted with CONFIG_ prefix but not available on the command line
2311 CONFIG_EXTRA="
2312     aandcttables
2313     ac3dsp
2314     adts_header
2315     audio_frame_queue
2316     audiodsp
2317     blockdsp
2318     bswapdsp
2319     cabac
2320     cbs
2321     cbs_av1
2322     cbs_h264
2323     cbs_h265
2324     cbs_jpeg
2325     cbs_mpeg2
2326     cbs_vp9
2327     dirac_parse
2328     dnn
2329     dvprofile
2330     exif
2331     faandct
2332     faanidct
2333     fdctdsp
2334     flacdsp
2335     fmtconvert
2336     frame_thread_encoder
2337     g722dsp
2338     golomb
2339     gplv3
2340     h263dsp
2341     h264chroma
2342     h264dsp
2343     h264parse
2344     h264pred
2345     h264qpel
2346     hevcparse
2347     hpeldsp
2348     huffman
2349     huffyuvdsp
2350     huffyuvencdsp
2351     idctdsp
2352     iirfilter
2353     mdct15
2354     intrax8
2355     iso_media
2356     ividsp
2357     jpegtables
2358     lgplv3
2359     libx262
2360     llauddsp
2361     llviddsp
2362     llvidencdsp
2363     lpc
2364     lzf
2365     me_cmp
2366     mpeg_er
2367     mpegaudio
2368     mpegaudiodsp
2369     mpegaudioheader
2370     mpegvideo
2371     mpegvideoenc
2372     mss34dsp
2373     pixblockdsp
2374     qpeldsp
2375     qsv
2376     qsvdec
2377     qsvenc
2378     qsvvpp
2379     rangecoder
2380     riffdec
2381     riffenc
2382     rtpdec
2383     rtpenc_chain
2384     rv34dsp
2385     scene_sad
2386     sinewin
2387     snappy
2388     srtp
2389     startcode
2390     texturedsp
2391     texturedspenc
2392     tpeldsp
2393     vaapi_1
2394     vaapi_encode
2395     vc1dsp
2396     videodsp
2397     vp3dsp
2398     vp56dsp
2399     vp8dsp
2400     wma_freqs
2401     wmv2dsp
2402 "
2403
2404 CMDLINE_SELECT="
2405     $ARCH_EXT_LIST
2406     $CONFIG_LIST
2407     $HAVE_LIST_CMDLINE
2408     $THREADS_LIST
2409     asm
2410     cross_compile
2411     debug
2412     extra_warnings
2413     logging
2414     lto
2415     optimizations
2416     rpath
2417     stripping
2418 "
2419
2420 PATHS_LIST="
2421     bindir
2422     datadir
2423     docdir
2424     incdir
2425     libdir
2426     mandir
2427     pkgconfigdir
2428     prefix
2429     shlibdir
2430     install_name_dir
2431 "
2432
2433 CMDLINE_SET="
2434     $PATHS_LIST
2435     ar
2436     arch
2437     as
2438     assert_level
2439     build_suffix
2440     cc
2441     objcc
2442     cpu
2443     cross_prefix
2444     custom_allocator
2445     cxx
2446     dep_cc
2447     doxygen
2448     env
2449     extra_version
2450     gas
2451     host_cc
2452     host_cflags
2453     host_extralibs
2454     host_ld
2455     host_ldflags
2456     host_os
2457     ignore_tests
2458     install
2459     ld
2460     ln_s
2461     logfile
2462     malloc_prefix
2463     nm
2464     optflags
2465     nvcc
2466     nvccflags
2467     pkg_config
2468     pkg_config_flags
2469     progs_suffix
2470     random_seed
2471     ranlib
2472     samples
2473     strip
2474     sws_max_filter_size
2475     sysinclude
2476     sysroot
2477     target_exec
2478     target_os
2479     target_path
2480     target_samples
2481     tempprefix
2482     toolchain
2483     valgrind
2484     windres
2485     x86asmexe
2486 "
2487
2488 CMDLINE_APPEND="
2489     extra_cflags
2490     extra_cxxflags
2491     extra_objcflags
2492     host_cppflags
2493 "
2494
2495 # code dependency declarations
2496
2497 # architecture extensions
2498
2499 armv5te_deps="arm"
2500 armv6_deps="arm"
2501 armv6t2_deps="arm"
2502 armv8_deps="aarch64"
2503 neon_deps_any="aarch64 arm"
2504 intrinsics_neon_deps="neon"
2505 vfp_deps_any="aarch64 arm"
2506 vfpv3_deps="vfp"
2507 setend_deps="arm"
2508
2509 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2510
2511 altivec_deps="ppc"
2512 dcbzl_deps="ppc"
2513 ldbrx_deps="ppc"
2514 ppc4xx_deps="ppc"
2515 vsx_deps="altivec"
2516 power8_deps="vsx"
2517
2518 loongson2_deps="mips"
2519 loongson3_deps="mips"
2520 mips32r2_deps="mips"
2521 mips32r5_deps="mips"
2522 mips32r6_deps="mips"
2523 mips64r2_deps="mips"
2524 mips64r6_deps="mips"
2525 mipsfpu_deps="mips"
2526 mipsdsp_deps="mips"
2527 mipsdspr2_deps="mips"
2528 mmi_deps="mips"
2529 msa_deps="mipsfpu"
2530
2531 cpunop_deps="i686"
2532 x86_64_select="i686"
2533 x86_64_suggest="fast_cmov"
2534
2535 amd3dnow_deps="mmx"
2536 amd3dnowext_deps="amd3dnow"
2537 i686_deps="x86"
2538 mmx_deps="x86"
2539 mmxext_deps="mmx"
2540 sse_deps="mmxext"
2541 sse2_deps="sse"
2542 sse3_deps="sse2"
2543 ssse3_deps="sse3"
2544 sse4_deps="ssse3"
2545 sse42_deps="sse4"
2546 aesni_deps="sse42"
2547 avx_deps="sse42"
2548 xop_deps="avx"
2549 fma3_deps="avx"
2550 fma4_deps="avx"
2551 avx2_deps="avx"
2552 avx512_deps="avx2"
2553
2554 mmx_external_deps="x86asm"
2555 mmx_inline_deps="inline_asm x86"
2556 mmx_suggest="mmx_external mmx_inline"
2557
2558 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2559     eval dep=\$${ext}_deps
2560     eval ${ext}_external_deps='"${dep}_external"'
2561     eval ${ext}_inline_deps='"${dep}_inline"'
2562     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2563 done
2564
2565 aligned_stack_if_any="aarch64 ppc x86"
2566 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2567 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2568 fast_unaligned_if_any="aarch64 ppc x86"
2569 simd_align_16_if_any="altivec neon sse"
2570 simd_align_32_if_any="avx"
2571 simd_align_64_if_any="avx512"
2572
2573 # system capabilities
2574 linux_perf_deps="linux_perf_event_h"
2575 symver_if_any="symver_asm_label symver_gnu_asm"
2576 valgrind_backtrace_conflict="optimizations"
2577 valgrind_backtrace_deps="valgrind_valgrind_h"
2578
2579 # threading support
2580 atomics_gcc_if="sync_val_compare_and_swap"
2581 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2582 atomics_win32_if="MemoryBarrier"
2583 atomics_native_if_any="$ATOMICS_LIST"
2584 w32threads_deps="atomics_native"
2585 threads_if_any="$THREADS_LIST"
2586
2587 # subsystems
2588 cbs_av1_select="cbs"
2589 cbs_h264_select="cbs golomb"
2590 cbs_h265_select="cbs golomb"
2591 cbs_jpeg_select="cbs"
2592 cbs_mpeg2_select="cbs"
2593 cbs_vp9_select="cbs"
2594 dct_select="rdft"
2595 dirac_parse_select="golomb"
2596 dnn_suggest="libtensorflow"
2597 error_resilience_select="me_cmp"
2598 faandct_deps="faan"
2599 faandct_select="fdctdsp"
2600 faanidct_deps="faan"
2601 faanidct_select="idctdsp"
2602 h264dsp_select="startcode"
2603 hevcparse_select="golomb"
2604 frame_thread_encoder_deps="encoders threads"
2605 intrax8_select="blockdsp idctdsp"
2606 mdct_select="fft"
2607 mdct15_select="fft"
2608 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2609 mpeg_er_select="error_resilience"
2610 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2611 mpegaudiodsp_select="dct"
2612 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2613 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2614 vc1dsp_select="h264chroma qpeldsp startcode"
2615 rdft_select="fft"
2616
2617 # decoders / encoders
2618 aac_decoder_select="adts_header mdct15 mdct sinewin"
2619 aac_fixed_decoder_select="adts_header mdct sinewin"
2620 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2621 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2622 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2623 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2624 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2625 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2626 adpcm_g722_decoder_select="g722dsp"
2627 adpcm_g722_encoder_select="g722dsp"
2628 aic_decoder_select="golomb idctdsp"
2629 alac_encoder_select="lpc"
2630 als_decoder_select="bswapdsp"
2631 amrnb_decoder_select="lsp"
2632 amrwb_decoder_select="lsp"
2633 amv_decoder_select="sp5x_decoder exif"
2634 amv_encoder_select="jpegtables mpegvideoenc"
2635 ape_decoder_select="bswapdsp llauddsp"
2636 apng_decoder_deps="zlib"
2637 apng_encoder_deps="zlib"
2638 apng_encoder_select="llvidencdsp"
2639 aptx_decoder_select="audio_frame_queue"
2640 aptx_encoder_select="audio_frame_queue"
2641 aptx_hd_decoder_select="audio_frame_queue"
2642 aptx_hd_encoder_select="audio_frame_queue"
2643 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2644 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2645 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2646 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2647 atrac1_decoder_select="mdct sinewin"
2648 atrac3_decoder_select="mdct"
2649 atrac3p_decoder_select="mdct sinewin"
2650 atrac9_decoder_select="mdct"
2651 avrn_decoder_select="exif jpegtables"
2652 bink_decoder_select="blockdsp hpeldsp"
2653 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2654 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2655 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2656 clearvideo_decoder_select="idctdsp"
2657 cllc_decoder_select="bswapdsp"
2658 comfortnoise_encoder_select="lpc"
2659 cook_decoder_select="audiodsp mdct sinewin"
2660 cscd_decoder_select="lzo"
2661 cscd_decoder_suggest="zlib"
2662 dca_decoder_select="mdct"
2663 dds_decoder_select="texturedsp"
2664 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2665 dnxhd_decoder_select="blockdsp idctdsp"
2666 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2667 dolby_e_decoder_select="mdct"
2668 dvvideo_decoder_select="dvprofile idctdsp"
2669 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2670 dxa_decoder_deps="zlib"
2671 dxv_decoder_select="lzf texturedsp"
2672 eac3_decoder_select="ac3_decoder"
2673 eac3_encoder_select="ac3_encoder"
2674 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2675 eatgq_decoder_select="aandcttables"
2676 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2677 exr_decoder_deps="zlib"
2678 ffv1_decoder_select="rangecoder"
2679 ffv1_encoder_select="rangecoder"
2680 ffvhuff_decoder_select="huffyuv_decoder"
2681 ffvhuff_encoder_select="huffyuv_encoder"
2682 fic_decoder_select="golomb"
2683 flac_decoder_select="flacdsp"
2684 flac_encoder_select="bswapdsp flacdsp lpc"
2685 flashsv2_decoder_deps="zlib"
2686 flashsv2_encoder_deps="zlib"
2687 flashsv_decoder_deps="zlib"
2688 flashsv_encoder_deps="zlib"
2689 flv_decoder_select="h263_decoder"
2690 flv_encoder_select="h263_encoder"
2691 fourxm_decoder_select="blockdsp bswapdsp"
2692 fraps_decoder_select="bswapdsp huffman"
2693 g2m_decoder_deps="zlib"
2694 g2m_decoder_select="blockdsp idctdsp jpegtables"
2695 g729_decoder_select="audiodsp"
2696 h261_decoder_select="mpegvideo"
2697 h261_encoder_select="mpegvideoenc"
2698 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2699 h263_encoder_select="h263dsp mpegvideoenc"
2700 h263i_decoder_select="h263_decoder"
2701 h263p_decoder_select="h263_decoder"
2702 h263p_encoder_select="h263_encoder"
2703 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2704 h264_decoder_suggest="error_resilience"
2705 hap_decoder_select="snappy texturedsp"
2706 hap_encoder_deps="libsnappy"
2707 hap_encoder_select="texturedspenc"
2708 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2709 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2710 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2711 hymt_decoder_select="huffyuv_decoder"
2712 iac_decoder_select="imc_decoder"
2713 imc_decoder_select="bswapdsp fft mdct sinewin"
2714 indeo3_decoder_select="hpeldsp"
2715 indeo4_decoder_select="ividsp"
2716 indeo5_decoder_select="ividsp"
2717 interplay_video_decoder_select="hpeldsp"
2718 jpegls_decoder_select="mjpeg_decoder"
2719 jv_decoder_select="blockdsp"
2720 lagarith_decoder_select="llviddsp"
2721 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2722 lscr_decoder_deps="zlib"
2723 magicyuv_decoder_select="llviddsp"
2724 magicyuv_encoder_select="llvidencdsp"
2725 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2726 metasound_decoder_select="lsp mdct sinewin"
2727 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2728 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2729 mjpeg_encoder_select="jpegtables mpegvideoenc"
2730 mjpegb_decoder_select="mjpeg_decoder"
2731 mlp_decoder_select="mlp_parser"
2732 mlp_encoder_select="lpc audio_frame_queue"
2733 motionpixels_decoder_select="bswapdsp"
2734 mp1_decoder_select="mpegaudio"
2735 mp1float_decoder_select="mpegaudio"
2736 mp2_decoder_select="mpegaudio"
2737 mp2float_decoder_select="mpegaudio"
2738 mp3_decoder_select="mpegaudio"
2739 mp3adu_decoder_select="mpegaudio"
2740 mp3adufloat_decoder_select="mpegaudio"
2741 mp3float_decoder_select="mpegaudio"
2742 mp3on4_decoder_select="mpegaudio"
2743 mp3on4float_decoder_select="mpegaudio"
2744 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2745 mpc8_decoder_select="mpegaudiodsp"
2746 mpegvideo_decoder_select="mpegvideo"
2747 mpeg1video_decoder_select="mpegvideo"
2748 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2749 mpeg2video_decoder_select="mpegvideo"
2750 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2751 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2752 mpeg4_encoder_select="h263_encoder"
2753 msa1_decoder_select="mss34dsp"
2754 mscc_decoder_deps="zlib"
2755 msmpeg4v1_decoder_select="h263_decoder"
2756 msmpeg4v2_decoder_select="h263_decoder"
2757 msmpeg4v2_encoder_select="h263_encoder"
2758 msmpeg4v3_decoder_select="h263_decoder"
2759 msmpeg4v3_encoder_select="h263_encoder"
2760 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2761 mts2_decoder_select="mss34dsp"
2762 mwsc_decoder_deps="zlib"
2763 mxpeg_decoder_select="mjpeg_decoder"
2764 nellymoser_decoder_select="mdct sinewin"
2765 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2766 nuv_decoder_select="idctdsp lzo"
2767 on2avc_decoder_select="mdct"
2768 opus_decoder_deps="swresample"
2769 opus_decoder_select="mdct15"
2770 opus_encoder_select="audio_frame_queue mdct15"
2771 png_decoder_deps="zlib"
2772 png_encoder_deps="zlib"
2773 png_encoder_select="llvidencdsp"
2774 prores_decoder_select="blockdsp idctdsp"
2775 prores_encoder_select="fdctdsp"
2776 qcelp_decoder_select="lsp"
2777 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2778 ra_144_decoder_select="audiodsp"
2779 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2780 ralf_decoder_select="golomb"
2781 rasc_decoder_deps="zlib"
2782 rawvideo_decoder_select="bswapdsp"
2783 rscc_decoder_deps="zlib"
2784 rtjpeg_decoder_select="me_cmp"
2785 rv10_decoder_select="h263_decoder"
2786 rv10_encoder_select="h263_encoder"
2787 rv20_decoder_select="h263_decoder"
2788 rv20_encoder_select="h263_encoder"
2789 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2790 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2791 screenpresso_decoder_deps="zlib"
2792 shorten_decoder_select="bswapdsp"
2793 sipr_decoder_select="lsp"
2794 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2795 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2796 sonic_decoder_select="golomb rangecoder"
2797 sonic_encoder_select="golomb rangecoder"
2798 sonic_ls_encoder_select="golomb rangecoder"
2799 sp5x_decoder_select="mjpeg_decoder"
2800 speedhq_decoder_select="mpegvideo"
2801 srgc_decoder_deps="zlib"
2802 svq1_decoder_select="hpeldsp"
2803 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2804 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2805 svq3_decoder_suggest="zlib"
2806 tak_decoder_select="audiodsp"
2807 tdsc_decoder_deps="zlib"
2808 tdsc_decoder_select="mjpeg_decoder"
2809 theora_decoder_select="vp3_decoder"
2810 thp_decoder_select="mjpeg_decoder"
2811 tiff_decoder_suggest="zlib lzma"
2812 tiff_encoder_suggest="zlib"
2813 truehd_decoder_select="mlp_parser"
2814 truehd_encoder_select="lpc audio_frame_queue"
2815 truemotion2_decoder_select="bswapdsp"
2816 truespeech_decoder_select="bswapdsp"
2817 tscc_decoder_deps="zlib"
2818 twinvq_decoder_select="mdct lsp sinewin"
2819 txd_decoder_select="texturedsp"
2820 utvideo_decoder_select="bswapdsp llviddsp"
2821 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2822 vble_decoder_select="llviddsp"
2823 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2824 vc1image_decoder_select="vc1_decoder"
2825 vorbis_decoder_select="mdct"
2826 vorbis_encoder_select="audio_frame_queue mdct"
2827 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2828 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2829 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2830 vp6a_decoder_select="vp6_decoder"
2831 vp6f_decoder_select="vp6_decoder"
2832 vp7_decoder_select="h264pred videodsp vp8dsp"
2833 vp8_decoder_select="h264pred videodsp vp8dsp"
2834 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2835 wcmv_decoder_deps="zlib"
2836 webp_decoder_select="vp8_decoder exif"
2837 wmalossless_decoder_select="llauddsp"
2838 wmapro_decoder_select="mdct sinewin wma_freqs"
2839 wmav1_decoder_select="mdct sinewin wma_freqs"
2840 wmav1_encoder_select="mdct sinewin wma_freqs"
2841 wmav2_decoder_select="mdct sinewin wma_freqs"
2842 wmav2_encoder_select="mdct sinewin wma_freqs"
2843 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2844 wmv1_decoder_select="h263_decoder"
2845 wmv1_encoder_select="h263_encoder"
2846 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2847 wmv2_encoder_select="h263_encoder wmv2dsp"
2848 wmv3_decoder_select="vc1_decoder"
2849 wmv3image_decoder_select="wmv3_decoder"
2850 xma1_decoder_select="wmapro_decoder"
2851 xma2_decoder_select="wmapro_decoder"
2852 zerocodec_decoder_deps="zlib"
2853 zlib_decoder_deps="zlib"
2854 zlib_encoder_deps="zlib"
2855 zmbv_decoder_deps="zlib"
2856 zmbv_encoder_deps="zlib"
2857
2858 # hardware accelerators
2859 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2860 cuda_deps="ffnvcodec"
2861 cuvid_deps="ffnvcodec"
2862 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2863 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2864 ffnvcodec_deps_any="libdl LoadLibrary"
2865 nvdec_deps="ffnvcodec"
2866 vaapi_x11_deps="xlib"
2867 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2868 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2869 xvmc_deps="X11_extensions_XvMClib_h"
2870
2871 h263_vaapi_hwaccel_deps="vaapi"
2872 h263_vaapi_hwaccel_select="h263_decoder"
2873 h263_videotoolbox_hwaccel_deps="videotoolbox"
2874 h263_videotoolbox_hwaccel_select="h263_decoder"
2875 h264_d3d11va_hwaccel_deps="d3d11va"
2876 h264_d3d11va_hwaccel_select="h264_decoder"
2877 h264_d3d11va2_hwaccel_deps="d3d11va"
2878 h264_d3d11va2_hwaccel_select="h264_decoder"
2879 h264_dxva2_hwaccel_deps="dxva2"
2880 h264_dxva2_hwaccel_select="h264_decoder"
2881 h264_nvdec_hwaccel_deps="nvdec"
2882 h264_nvdec_hwaccel_select="h264_decoder"
2883 h264_vaapi_hwaccel_deps="vaapi"
2884 h264_vaapi_hwaccel_select="h264_decoder"
2885 h264_vdpau_hwaccel_deps="vdpau"
2886 h264_vdpau_hwaccel_select="h264_decoder"
2887 h264_videotoolbox_hwaccel_deps="videotoolbox"
2888 h264_videotoolbox_hwaccel_select="h264_decoder"
2889 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2890 hevc_d3d11va_hwaccel_select="hevc_decoder"
2891 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2892 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2893 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2894 hevc_dxva2_hwaccel_select="hevc_decoder"
2895 hevc_nvdec_hwaccel_deps="nvdec"
2896 hevc_nvdec_hwaccel_select="hevc_decoder"
2897 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2898 hevc_vaapi_hwaccel_select="hevc_decoder"
2899 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2900 hevc_vdpau_hwaccel_select="hevc_decoder"
2901 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2902 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2903 mjpeg_nvdec_hwaccel_deps="nvdec"
2904 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2905 mjpeg_vaapi_hwaccel_deps="vaapi"
2906 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2907 mpeg_xvmc_hwaccel_deps="xvmc"
2908 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2909 mpeg1_nvdec_hwaccel_deps="nvdec"
2910 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2911 mpeg1_vdpau_hwaccel_deps="vdpau"
2912 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2913 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2914 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2915 mpeg1_xvmc_hwaccel_deps="xvmc"
2916 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2917 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2918 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2920 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_dxva2_hwaccel_deps="dxva2"
2922 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_nvdec_hwaccel_deps="nvdec"
2924 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_vaapi_hwaccel_deps="vaapi"
2926 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2927 mpeg2_vdpau_hwaccel_deps="vdpau"
2928 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2929 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2930 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2931 mpeg2_xvmc_hwaccel_deps="xvmc"
2932 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2933 mpeg4_nvdec_hwaccel_deps="nvdec"
2934 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2935 mpeg4_vaapi_hwaccel_deps="vaapi"
2936 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2937 mpeg4_vdpau_hwaccel_deps="vdpau"
2938 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2939 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2940 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2941 vc1_d3d11va_hwaccel_deps="d3d11va"
2942 vc1_d3d11va_hwaccel_select="vc1_decoder"
2943 vc1_d3d11va2_hwaccel_deps="d3d11va"
2944 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2945 vc1_dxva2_hwaccel_deps="dxva2"
2946 vc1_dxva2_hwaccel_select="vc1_decoder"
2947 vc1_nvdec_hwaccel_deps="nvdec"
2948 vc1_nvdec_hwaccel_select="vc1_decoder"
2949 vc1_vaapi_hwaccel_deps="vaapi"
2950 vc1_vaapi_hwaccel_select="vc1_decoder"
2951 vc1_vdpau_hwaccel_deps="vdpau"
2952 vc1_vdpau_hwaccel_select="vc1_decoder"
2953 vp8_nvdec_hwaccel_deps="nvdec"
2954 vp8_nvdec_hwaccel_select="vp8_decoder"
2955 vp8_vaapi_hwaccel_deps="vaapi"
2956 vp8_vaapi_hwaccel_select="vp8_decoder"
2957 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2958 vp9_d3d11va_hwaccel_select="vp9_decoder"
2959 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2960 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2961 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2962 vp9_dxva2_hwaccel_select="vp9_decoder"
2963 vp9_nvdec_hwaccel_deps="nvdec"
2964 vp9_nvdec_hwaccel_select="vp9_decoder"
2965 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2966 vp9_vaapi_hwaccel_select="vp9_decoder"
2967 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2968 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2969 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2970 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2971 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2972 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2973
2974 # hardware-accelerated codecs
2975 omx_deps="libdl pthreads"
2976 omx_rpi_select="omx"
2977 qsv_deps="libmfx"
2978 qsvdec_select="qsv"
2979 qsvenc_select="qsv"
2980 qsvvpp_select="qsv"
2981 vaapi_encode_deps="vaapi"
2982 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2983
2984 hwupload_cuda_filter_deps="ffnvcodec"
2985 scale_npp_filter_deps="ffnvcodec libnpp"
2986 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2987 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2988 transpose_npp_filter_deps="ffnvcodec libnpp"
2989
2990 amf_deps_any="libdl LoadLibrary"
2991 nvenc_deps="ffnvcodec"
2992 nvenc_deps_any="libdl LoadLibrary"
2993 nvenc_encoder_deps="nvenc"
2994
2995 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2996 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2997 h264_amf_encoder_deps="amf"
2998 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2999 h264_cuvid_decoder_deps="cuvid"
3000 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3001 h264_mediacodec_decoder_deps="mediacodec"
3002 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3003 h264_mmal_decoder_deps="mmal"
3004 h264_nvenc_encoder_deps="nvenc"
3005 h264_omx_encoder_deps="omx"
3006 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3007 h264_qsv_encoder_select="qsvenc"
3008 h264_rkmpp_decoder_deps="rkmpp"
3009 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3010 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3011 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3012 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3013 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3014 hevc_amf_encoder_deps="amf"
3015 hevc_cuvid_decoder_deps="cuvid"
3016 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3017 hevc_mediacodec_decoder_deps="mediacodec"
3018 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3019 hevc_nvenc_encoder_deps="nvenc"
3020 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3021 hevc_qsv_encoder_select="hevcparse qsvenc"
3022 hevc_rkmpp_decoder_deps="rkmpp"
3023 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3024 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3025 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3026 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3027 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3028 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3029 mjpeg_cuvid_decoder_deps="cuvid"
3030 mjpeg_qsv_encoder_deps="libmfx"
3031 mjpeg_qsv_encoder_select="qsvenc"
3032 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3033 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3034 mpeg1_cuvid_decoder_deps="cuvid"
3035 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3036 mpeg2_crystalhd_decoder_select="crystalhd"
3037 mpeg2_cuvid_decoder_deps="cuvid"
3038 mpeg2_mmal_decoder_deps="mmal"
3039 mpeg2_mediacodec_decoder_deps="mediacodec"
3040 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3041 mpeg2_qsv_encoder_select="qsvenc"
3042 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3043 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3044 mpeg4_crystalhd_decoder_select="crystalhd"
3045 mpeg4_cuvid_decoder_deps="cuvid"
3046 mpeg4_mediacodec_decoder_deps="mediacodec"
3047 mpeg4_mmal_decoder_deps="mmal"
3048 mpeg4_omx_encoder_deps="omx"
3049 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3050 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3051 msmpeg4_crystalhd_decoder_select="crystalhd"
3052 nvenc_h264_encoder_select="h264_nvenc_encoder"
3053 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3054 vc1_crystalhd_decoder_select="crystalhd"
3055 vc1_cuvid_decoder_deps="cuvid"
3056 vc1_mmal_decoder_deps="mmal"
3057 vc1_qsv_decoder_select="qsvdec vc1_parser"
3058 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3059 vp8_cuvid_decoder_deps="cuvid"
3060 vp8_mediacodec_decoder_deps="mediacodec"
3061 vp8_qsv_decoder_select="qsvdec vp8_parser"
3062 vp8_rkmpp_decoder_deps="rkmpp"
3063 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3064 vp8_vaapi_encoder_select="vaapi_encode"
3065 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3066 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3067 vp9_cuvid_decoder_deps="cuvid"
3068 vp9_mediacodec_decoder_deps="mediacodec"
3069 vp9_rkmpp_decoder_deps="rkmpp"
3070 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3071 vp9_vaapi_encoder_select="vaapi_encode"
3072 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3073 wmv3_crystalhd_decoder_select="crystalhd"
3074
3075 # parsers
3076 aac_parser_select="adts_header"
3077 av1_parser_select="cbs_av1"
3078 h264_parser_select="golomb h264dsp h264parse"
3079 hevc_parser_select="hevcparse"
3080 mpegaudio_parser_select="mpegaudioheader"
3081 mpegvideo_parser_select="mpegvideo"
3082 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3083 vc1_parser_select="vc1dsp"
3084
3085 # bitstream_filters
3086 aac_adtstoasc_bsf_select="adts_header"
3087 av1_frame_split_bsf_select="cbs_av1"
3088 av1_metadata_bsf_select="cbs_av1"
3089 eac3_core_bsf_select="ac3_parser"
3090 filter_units_bsf_select="cbs"
3091 h264_metadata_bsf_deps="const_nan"
3092 h264_metadata_bsf_select="cbs_h264"
3093 h264_redundant_pps_bsf_select="cbs_h264"
3094 hevc_metadata_bsf_select="cbs_h265"
3095 mjpeg2jpeg_bsf_select="jpegtables"
3096 mpeg2_metadata_bsf_select="cbs_mpeg2"
3097 trace_headers_bsf_select="cbs"
3098 vp9_metadata_bsf_select="cbs_vp9"
3099
3100 # external libraries
3101 aac_at_decoder_deps="audiotoolbox"
3102 aac_at_decoder_select="aac_adtstoasc_bsf"
3103 ac3_at_decoder_deps="audiotoolbox"
3104 ac3_at_decoder_select="ac3_parser"
3105 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3106 alac_at_decoder_deps="audiotoolbox"
3107 amr_nb_at_decoder_deps="audiotoolbox"
3108 avisynth_deps_any="libdl LoadLibrary"
3109 avisynth_demuxer_deps="avisynth"
3110 avisynth_demuxer_select="riffdec"
3111 eac3_at_decoder_deps="audiotoolbox"
3112 eac3_at_decoder_select="ac3_parser"
3113 gsm_ms_at_decoder_deps="audiotoolbox"
3114 ilbc_at_decoder_deps="audiotoolbox"
3115 mp1_at_decoder_deps="audiotoolbox"
3116 mp2_at_decoder_deps="audiotoolbox"
3117 mp3_at_decoder_deps="audiotoolbox"
3118 mp1_at_decoder_select="mpegaudioheader"
3119 mp2_at_decoder_select="mpegaudioheader"
3120 mp3_at_decoder_select="mpegaudioheader"
3121 pcm_alaw_at_decoder_deps="audiotoolbox"
3122 pcm_mulaw_at_decoder_deps="audiotoolbox"
3123 qdmc_at_decoder_deps="audiotoolbox"
3124 qdm2_at_decoder_deps="audiotoolbox"
3125 aac_at_encoder_deps="audiotoolbox"
3126 aac_at_encoder_select="audio_frame_queue"
3127 alac_at_encoder_deps="audiotoolbox"
3128 alac_at_encoder_select="audio_frame_queue"
3129 ilbc_at_encoder_deps="audiotoolbox"
3130 ilbc_at_encoder_select="audio_frame_queue"
3131 pcm_alaw_at_encoder_deps="audiotoolbox"
3132 pcm_alaw_at_encoder_select="audio_frame_queue"
3133 pcm_mulaw_at_encoder_deps="audiotoolbox"
3134 pcm_mulaw_at_encoder_select="audio_frame_queue"
3135 chromaprint_muxer_deps="chromaprint"
3136 h264_videotoolbox_encoder_deps="pthreads"
3137 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3138 hevc_videotoolbox_encoder_deps="pthreads"
3139 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3140 libaom_av1_decoder_deps="libaom"
3141 libaom_av1_encoder_deps="libaom"
3142 libaom_av1_encoder_select="extract_extradata_bsf"
3143 libaribb24_decoder_deps="libaribb24"
3144 libcelt_decoder_deps="libcelt"
3145 libcodec2_decoder_deps="libcodec2"
3146 libcodec2_encoder_deps="libcodec2"
3147 libdav1d_decoder_deps="libdav1d"
3148 libdavs2_decoder_deps="libdavs2"
3149 libfdk_aac_decoder_deps="libfdk_aac"
3150 libfdk_aac_encoder_deps="libfdk_aac"
3151 libfdk_aac_encoder_select="audio_frame_queue"
3152 libgme_demuxer_deps="libgme"
3153 libgsm_decoder_deps="libgsm"
3154 libgsm_encoder_deps="libgsm"
3155 libgsm_ms_decoder_deps="libgsm"
3156 libgsm_ms_encoder_deps="libgsm"
3157 libilbc_decoder_deps="libilbc"
3158 libilbc_encoder_deps="libilbc"
3159 libkvazaar_encoder_deps="libkvazaar"
3160 libmodplug_demuxer_deps="libmodplug"
3161 libmp3lame_encoder_deps="libmp3lame"
3162 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3163 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3164 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3165 libopencore_amrnb_encoder_select="audio_frame_queue"
3166 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3167 libopenh264_decoder_deps="libopenh264"
3168 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3169 libopenh264_encoder_deps="libopenh264"
3170 libopenjpeg_decoder_deps="libopenjpeg"
3171 libopenjpeg_encoder_deps="libopenjpeg"
3172 libopenmpt_demuxer_deps="libopenmpt"
3173 libopus_decoder_deps="libopus"
3174 libopus_encoder_deps="libopus"
3175 libopus_encoder_select="audio_frame_queue"
3176 librsvg_decoder_deps="librsvg"
3177 libshine_encoder_deps="libshine"
3178 libshine_encoder_select="audio_frame_queue"
3179 libspeex_decoder_deps="libspeex"
3180 libspeex_encoder_deps="libspeex"
3181 libspeex_encoder_select="audio_frame_queue"
3182 libtheora_encoder_deps="libtheora"
3183 libtwolame_encoder_deps="libtwolame"
3184 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3185 libvorbis_decoder_deps="libvorbis"
3186 libvorbis_encoder_deps="libvorbis libvorbisenc"
3187 libvorbis_encoder_select="audio_frame_queue"
3188 libvpx_vp8_decoder_deps="libvpx"
3189 libvpx_vp8_encoder_deps="libvpx"
3190 libvpx_vp9_decoder_deps="libvpx"
3191 libvpx_vp9_encoder_deps="libvpx"
3192 libwavpack_encoder_deps="libwavpack"
3193 libwavpack_encoder_select="audio_frame_queue"
3194 libwebp_encoder_deps="libwebp"
3195 libwebp_anim_encoder_deps="libwebp"
3196 libx262_encoder_deps="libx262"
3197 libx264_encoder_deps="libx264"
3198 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3199 libx264rgb_encoder_select="libx264_encoder"
3200 libx265_encoder_deps="libx265"
3201 libxavs_encoder_deps="libxavs"
3202 libxavs2_encoder_deps="libxavs2"
3203 libxvid_encoder_deps="libxvid"
3204 libzvbi_teletext_decoder_deps="libzvbi"
3205 vapoursynth_demuxer_deps="vapoursynth"
3206 videotoolbox_suggest="coreservices"
3207 videotoolbox_deps="corefoundation coremedia corevideo"
3208 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3209
3210 # demuxers / muxers
3211 ac3_demuxer_select="ac3_parser"
3212 aiff_muxer_select="iso_media"
3213 asf_demuxer_select="riffdec"
3214 asf_o_demuxer_select="riffdec"
3215 asf_muxer_select="riffenc"
3216 asf_stream_muxer_select="asf_muxer"
3217 avi_demuxer_select="iso_media riffdec exif"
3218 avi_muxer_select="riffenc"
3219 caf_demuxer_select="iso_media riffdec"
3220 caf_muxer_select="iso_media"
3221 dash_muxer_select="mp4_muxer"
3222 dash_demuxer_deps="libxml2"
3223 dirac_demuxer_select="dirac_parser"
3224 dts_demuxer_select="dca_parser"
3225 dtshd_demuxer_select="dca_parser"
3226 dv_demuxer_select="dvprofile"
3227 dv_muxer_select="dvprofile"
3228 dxa_demuxer_select="riffdec"
3229 eac3_demuxer_select="ac3_parser"
3230 f4v_muxer_select="mov_muxer"
3231 fifo_muxer_deps="threads"
3232 flac_demuxer_select="flac_parser"
3233 hds_muxer_select="flv_muxer"
3234 hls_muxer_select="mpegts_muxer"
3235 hls_muxer_suggest="gcrypt openssl"
3236 image2_alias_pix_demuxer_select="image2_demuxer"
3237 image2_brender_pix_demuxer_select="image2_demuxer"
3238 ipod_muxer_select="mov_muxer"
3239 ismv_muxer_select="mov_muxer"
3240 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3241 matroska_audio_muxer_select="matroska_muxer"
3242 matroska_demuxer_select="iso_media riffdec"
3243 matroska_demuxer_suggest="bzlib lzo zlib"
3244 matroska_muxer_select="iso_media riffenc"
3245 mmf_muxer_select="riffenc"
3246 mov_demuxer_select="iso_media riffdec"
3247 mov_demuxer_suggest="zlib"
3248 mov_muxer_select="iso_media riffenc rtpenc_chain"
3249 mp3_demuxer_select="mpegaudio_parser"
3250 mp3_muxer_select="mpegaudioheader"
3251 mp4_muxer_select="mov_muxer"
3252 mpegts_demuxer_select="iso_media"
3253 mpegts_muxer_select="adts_muxer latm_muxer"
3254 mpegtsraw_demuxer_select="mpegts_demuxer"
3255 mxf_d10_muxer_select="mxf_muxer"
3256 mxf_opatom_muxer_select="mxf_muxer"
3257 nut_muxer_select="riffenc"
3258 nuv_demuxer_select="riffdec"
3259 oga_muxer_select="ogg_muxer"
3260 ogg_demuxer_select="dirac_parse"
3261 ogv_muxer_select="ogg_muxer"
3262 opus_muxer_select="ogg_muxer"
3263 psp_muxer_select="mov_muxer"
3264 rtp_demuxer_select="sdp_demuxer"
3265 rtp_muxer_select="golomb"
3266 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3267 rtsp_demuxer_select="http_protocol rtpdec"
3268 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3269 sap_demuxer_select="sdp_demuxer"
3270 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3271 sdp_demuxer_select="rtpdec"
3272 smoothstreaming_muxer_select="ismv_muxer"
3273 spdif_demuxer_select="adts_header"
3274 spdif_muxer_select="adts_header"
3275 spx_muxer_select="ogg_muxer"
3276 swf_demuxer_suggest="zlib"
3277 tak_demuxer_select="tak_parser"
3278 tg2_muxer_select="mov_muxer"
3279 tgp_muxer_select="mov_muxer"
3280 vobsub_demuxer_select="mpegps_demuxer"
3281 w64_demuxer_select="wav_demuxer"
3282 w64_muxer_select="wav_muxer"
3283 wav_demuxer_select="riffdec"
3284 wav_muxer_select="riffenc"
3285 webm_muxer_select="iso_media riffenc"
3286 webm_dash_manifest_demuxer_select="matroska_demuxer"
3287 wtv_demuxer_select="mpegts_demuxer riffdec"
3288 wtv_muxer_select="mpegts_muxer riffenc"
3289 xmv_demuxer_select="riffdec"
3290 xwma_demuxer_select="riffdec"
3291
3292 # indevs / outdevs
3293 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3294 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3295 alsa_indev_deps="alsa"
3296 alsa_outdev_deps="alsa"
3297 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3298 avfoundation_indev_suggest="coregraphics applicationservices"
3299 avfoundation_indev_extralibs="-framework Foundation"
3300 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3301 caca_outdev_deps="libcaca"
3302 decklink_deps_any="libdl LoadLibrary"
3303 decklink_indev_deps="decklink threads"
3304 decklink_indev_extralibs="-lstdc++"
3305 decklink_outdev_deps="decklink threads"
3306 decklink_outdev_suggest="libklvanc"
3307 decklink_outdev_extralibs="-lstdc++"
3308 dshow_indev_deps="IBaseFilter"
3309 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3310 fbdev_indev_deps="linux_fb_h"
3311 fbdev_outdev_deps="linux_fb_h"
3312 gdigrab_indev_deps="CreateDIBSection"
3313 gdigrab_indev_extralibs="-lgdi32"
3314 gdigrab_indev_select="bmp_decoder"
3315 iec61883_indev_deps="libiec61883"
3316 jack_indev_deps="libjack"
3317 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3318 kmsgrab_indev_deps="libdrm"
3319 lavfi_indev_deps="avfilter"
3320 libcdio_indev_deps="libcdio"
3321 libdc1394_indev_deps="libdc1394"
3322 openal_indev_deps="openal"
3323 opengl_outdev_deps="opengl"
3324 opengl_outdev_suggest="sdl2"
3325 oss_indev_deps_any="sys_soundcard_h"
3326 oss_outdev_deps_any="sys_soundcard_h"
3327 pulse_indev_deps="libpulse"
3328 pulse_outdev_deps="libpulse"
3329 sdl2_outdev_deps="sdl2"
3330 sndio_indev_deps="sndio"
3331 sndio_outdev_deps="sndio"
3332 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3333 v4l2_indev_suggest="libv4l2"
3334 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3335 v4l2_outdev_suggest="libv4l2"
3336 vfwcap_indev_deps="vfw32 vfwcap_defines"
3337 xcbgrab_indev_deps="libxcb"
3338 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3339 xv_outdev_deps="xlib"
3340
3341 # protocols
3342 async_protocol_deps="threads"
3343 bluray_protocol_deps="libbluray"
3344 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3345 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3346 ffrtmpcrypt_protocol_select="tcp_protocol"
3347 ffrtmphttp_protocol_conflict="librtmp_protocol"
3348 ffrtmphttp_protocol_select="http_protocol"
3349 ftp_protocol_select="tcp_protocol"
3350 gopher_protocol_select="network"
3351 http_protocol_select="tcp_protocol"
3352 http_protocol_suggest="zlib"
3353 httpproxy_protocol_select="tcp_protocol"
3354 httpproxy_protocol_suggest="zlib"
3355 https_protocol_select="tls_protocol"
3356 https_protocol_suggest="zlib"
3357 icecast_protocol_select="http_protocol"
3358 mmsh_protocol_select="http_protocol"
3359 mmst_protocol_select="network"
3360 rtmp_protocol_conflict="librtmp_protocol"
3361 rtmp_protocol_select="tcp_protocol"
3362 rtmp_protocol_suggest="zlib"
3363 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3364 rtmpe_protocol_suggest="zlib"
3365 rtmps_protocol_conflict="librtmp_protocol"
3366 rtmps_protocol_select="tls_protocol"
3367 rtmps_protocol_suggest="zlib"
3368 rtmpt_protocol_select="ffrtmphttp_protocol"
3369 rtmpt_protocol_suggest="zlib"
3370 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3371 rtmpte_protocol_suggest="zlib"
3372 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3373 rtmpts_protocol_suggest="zlib"
3374 rtp_protocol_select="udp_protocol"
3375 schannel_conflict="openssl gnutls libtls mbedtls"
3376 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3377 sctp_protocol_select="network"
3378 securetransport_conflict="openssl gnutls libtls mbedtls"
3379 srtp_protocol_select="rtp_protocol srtp"
3380 tcp_protocol_select="network"
3381 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3382 tls_protocol_select="tcp_protocol"
3383 udp_protocol_select="network"
3384 udplite_protocol_select="network"
3385 unix_protocol_deps="sys_un_h"
3386 unix_protocol_select="network"
3387
3388 # external library protocols
3389 librtmp_protocol_deps="librtmp"
3390 librtmpe_protocol_deps="librtmp"
3391 librtmps_protocol_deps="librtmp"
3392 librtmpt_protocol_deps="librtmp"
3393 librtmpte_protocol_deps="librtmp"
3394 libsmbclient_protocol_deps="libsmbclient gplv3"
3395 libsrt_protocol_deps="libsrt"
3396 libsrt_protocol_select="network"
3397 libssh_protocol_deps="libssh"
3398 libtls_conflict="openssl gnutls mbedtls"
3399
3400 # filters
3401 afftdn_filter_deps="avcodec"
3402 afftdn_filter_select="fft"
3403 afftfilt_filter_deps="avcodec"
3404 afftfilt_filter_select="fft"
3405 afir_filter_deps="avcodec"
3406 afir_filter_select="fft"
3407 amovie_filter_deps="avcodec avformat"
3408 aresample_filter_deps="swresample"
3409 asr_filter_deps="pocketsphinx"
3410 ass_filter_deps="libass"
3411 atempo_filter_deps="avcodec"
3412 atempo_filter_select="rdft"
3413 avgblur_opencl_filter_deps="opencl"
3414 azmq_filter_deps="libzmq"
3415 blackframe_filter_deps="gpl"
3416 bm3d_filter_deps="avcodec"
3417 bm3d_filter_select="dct"
3418 boxblur_filter_deps="gpl"
3419 boxblur_opencl_filter_deps="opencl gpl"
3420 bs2b_filter_deps="libbs2b"
3421 colorkey_opencl_filter_deps="opencl"
3422 colormatrix_filter_deps="gpl"
3423 convolution_opencl_filter_deps="opencl"
3424 convolve_filter_deps="avcodec"
3425 convolve_filter_select="fft"
3426 coreimage_filter_deps="coreimage appkit"
3427 coreimage_filter_extralibs="-framework OpenGL"
3428 coreimagesrc_filter_deps="coreimage appkit"
3429 coreimagesrc_filter_extralibs="-framework OpenGL"
3430 cover_rect_filter_deps="avcodec avformat gpl"
3431 cropdetect_filter_deps="gpl"
3432 deconvolve_filter_deps="avcodec"
3433 deconvolve_filter_select="fft"
3434 deinterlace_qsv_filter_deps="libmfx"
3435 deinterlace_vaapi_filter_deps="vaapi"
3436 delogo_filter_deps="gpl"
3437 denoise_vaapi_filter_deps="vaapi"
3438 deshake_filter_select="pixelutils"
3439 dilation_opencl_filter_deps="opencl"
3440 drawtext_filter_deps="libfreetype"
3441 drawtext_filter_suggest="libfontconfig libfribidi"
3442 elbg_filter_deps="avcodec"
3443 eq_filter_deps="gpl"
3444 erosion_opencl_filter_deps="opencl"
3445 fftfilt_filter_deps="avcodec"
3446 fftfilt_filter_select="rdft"
3447 fftdnoiz_filter_deps="avcodec"
3448 fftdnoiz_filter_select="fft"
3449 find_rect_filter_deps="avcodec avformat gpl"
3450 firequalizer_filter_deps="avcodec"
3451 firequalizer_filter_select="rdft"
3452 flite_filter_deps="libflite"
3453 framerate_filter_select="scene_sad"
3454 freezedetect_filter_select="scene_sad"
3455 frei0r_filter_deps="frei0r libdl"
3456 frei0r_src_filter_deps="frei0r libdl"
3457 fspp_filter_deps="gpl"
3458 geq_filter_deps="gpl"
3459 histeq_filter_deps="gpl"
3460 hqdn3d_filter_deps="gpl"
3461 interlace_filter_deps="gpl"
3462 kerndeint_filter_deps="gpl"
3463 ladspa_filter_deps="ladspa libdl"
3464 lensfun_filter_deps="liblensfun version3"
3465 lv2_filter_deps="lv2"
3466 mcdeint_filter_deps="avcodec gpl"
3467 movie_filter_deps="avcodec avformat"
3468 mpdecimate_filter_deps="gpl"
3469 mpdecimate_filter_select="pixelutils"
3470 minterpolate_filter_select="scene_sad"
3471 mptestsrc_filter_deps="gpl"
3472 negate_filter_deps="lut_filter"
3473 nnedi_filter_deps="gpl"
3474 ocr_filter_deps="libtesseract"
3475 ocv_filter_deps="libopencv"
3476 openclsrc_filter_deps="opencl"
3477 overlay_opencl_filter_deps="opencl"
3478 overlay_qsv_filter_deps="libmfx"
3479 overlay_qsv_filter_select="qsvvpp"
3480 owdenoise_filter_deps="gpl"
3481 pan_filter_deps="swresample"
3482 perspective_filter_deps="gpl"
3483 phase_filter_deps="gpl"
3484 pp7_filter_deps="gpl"
3485 pp_filter_deps="gpl postproc"
3486 prewitt_opencl_filter_deps="opencl"
3487 procamp_vaapi_filter_deps="vaapi"
3488 program_opencl_filter_deps="opencl"
3489 pullup_filter_deps="gpl"
3490 removelogo_filter_deps="avcodec avformat swscale"
3491 repeatfields_filter_deps="gpl"
3492 resample_filter_deps="avresample"
3493 roberts_opencl_filter_deps="opencl"
3494 rubberband_filter_deps="librubberband"
3495 sab_filter_deps="gpl swscale"
3496 scale2ref_filter_deps="swscale"
3497 scale_filter_deps="swscale"
3498 scale_qsv_filter_deps="libmfx"
3499 select_filter_select="scene_sad"
3500 sharpness_vaapi_filter_deps="vaapi"
3501 showcqt_filter_deps="avcodec avformat swscale"
3502 showcqt_filter_suggest="libfontconfig libfreetype"
3503 showcqt_filter_select="fft"
3504 showfreqs_filter_deps="avcodec"
3505 showfreqs_filter_select="fft"
3506 showspectrum_filter_deps="avcodec"
3507 showspectrum_filter_select="fft"
3508 showspectrumpic_filter_deps="avcodec"
3509 showspectrumpic_filter_select="fft"
3510 signature_filter_deps="gpl avcodec avformat"
3511 smartblur_filter_deps="gpl swscale"
3512 sobel_opencl_filter_deps="opencl"
3513 sofalizer_filter_deps="libmysofa avcodec"
3514 sofalizer_filter_select="fft"
3515 spectrumsynth_filter_deps="avcodec"
3516 spectrumsynth_filter_select="fft"
3517 spp_filter_deps="gpl avcodec"
3518 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3519 sr_filter_deps="avformat swscale"
3520 sr_filter_select="dnn"
3521 stereo3d_filter_deps="gpl"
3522 subtitles_filter_deps="avformat avcodec libass"
3523 super2xsai_filter_deps="gpl"
3524 pixfmts_super2xsai_test_deps="super2xsai_filter"
3525 tinterlace_filter_deps="gpl"
3526 tinterlace_merge_test_deps="tinterlace_filter"
3527 tinterlace_pad_test_deps="tinterlace_filter"
3528 tonemap_filter_deps="const_nan"
3529 tonemap_opencl_filter_deps="opencl const_nan"
3530 transpose_opencl_filter_deps="opencl"
3531 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3532 unsharp_opencl_filter_deps="opencl"
3533 uspp_filter_deps="gpl avcodec"
3534 vaguedenoiser_filter_deps="gpl"
3535 vidstabdetect_filter_deps="libvidstab"
3536 vidstabtransform_filter_deps="libvidstab"
3537 libvmaf_filter_deps="libvmaf pthreads"
3538 zmq_filter_deps="libzmq"
3539 zoompan_filter_deps="swscale"
3540 zscale_filter_deps="libzimg const_nan"
3541 scale_vaapi_filter_deps="vaapi"
3542 vpp_qsv_filter_deps="libmfx"
3543 vpp_qsv_filter_select="qsvvpp"
3544 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3545
3546 # examples
3547 avio_dir_cmd_deps="avformat avutil"
3548 avio_reading_deps="avformat avcodec avutil"
3549 decode_audio_example_deps="avcodec avutil"
3550 decode_video_example_deps="avcodec avutil"
3551 demuxing_decoding_example_deps="avcodec avformat avutil"
3552 encode_audio_example_deps="avcodec avutil"
3553 encode_video_example_deps="avcodec avutil"
3554 extract_mvs_example_deps="avcodec avformat avutil"
3555 filter_audio_example_deps="avfilter avutil"
3556 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3557 filtering_video_example_deps="avfilter avcodec avformat avutil"
3558 http_multiclient_example_deps="avformat avutil fork"
3559 hw_decode_example_deps="avcodec avformat avutil"
3560 metadata_example_deps="avformat avutil"
3561 muxing_example_deps="avcodec avformat avutil swscale"
3562 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3563 remuxing_example_deps="avcodec avformat avutil"
3564 resampling_audio_example_deps="avutil swresample"
3565 scaling_video_example_deps="avutil swscale"
3566 transcode_aac_example_deps="avcodec avformat swresample"
3567 transcoding_example_deps="avfilter avcodec avformat avutil"
3568 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3569 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3570
3571 # EXTRALIBS_LIST
3572 cpu_init_extralibs="pthreads_extralibs"
3573 cws2fws_extralibs="zlib_extralibs"
3574
3575 # libraries, in any order
3576 avcodec_deps="avutil"
3577 avcodec_suggest="libm"
3578 avcodec_select="null_bsf"
3579 avdevice_deps="avformat avcodec avutil"
3580 avdevice_suggest="libm"
3581 avfilter_deps="avutil"
3582 avfilter_suggest="libm"
3583 avformat_deps="avcodec avutil"
3584 avformat_suggest="libm network zlib"
3585 avresample_deps="avutil"
3586 avresample_suggest="libm"
3587 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3588 postproc_deps="avutil gpl"
3589 postproc_suggest="libm"
3590 swresample_deps="avutil"
3591 swresample_suggest="libm libsoxr"
3592 swscale_deps="avutil"
3593 swscale_suggest="libm"
3594
3595 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3596 avfilter_extralibs="pthreads_extralibs"
3597 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3598
3599 # programs
3600 ffmpeg_deps="avcodec avfilter avformat"
3601 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3602                hflip_filter null_filter
3603                transpose_filter trim_filter vflip_filter"
3604 ffmpeg_suggest="ole32 psapi shell32"
3605 ffplay_deps="avcodec avformat swscale swresample sdl2"
3606 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3607 ffplay_suggest="shell32"
3608 ffprobe_deps="avcodec avformat"
3609 ffprobe_suggest="shell32"
3610
3611 # documentation
3612 podpages_deps="perl"
3613 manpages_deps="perl pod2man"
3614 htmlpages_deps="perl"
3615 htmlpages_deps_any="makeinfo_html texi2html"
3616 txtpages_deps="perl makeinfo"
3617 doc_deps_any="manpages htmlpages podpages txtpages"
3618
3619 # default parameters
3620
3621 logfile="ffbuild/config.log"
3622
3623 # installation paths
3624 prefix_default="/usr/local"
3625 bindir_default='${prefix}/bin'
3626 datadir_default='${prefix}/share/ffmpeg'
3627 docdir_default='${prefix}/share/doc/ffmpeg'
3628 incdir_default='${prefix}/include'
3629 libdir_default='${prefix}/lib'
3630 mandir_default='${prefix}/share/man'
3631
3632 # toolchain
3633 ar_default="ar"
3634 cc_default="gcc"
3635 cxx_default="g++"
3636 host_cc_default="gcc"
3637 doxygen_default="doxygen"
3638 install="install"
3639 ln_s_default="ln -s -f"
3640 nm_default="nm -g"
3641 pkg_config_default=pkg-config
3642 ranlib_default="ranlib"
3643 strip_default="strip"
3644 version_script='--version-script'
3645 objformat="elf32"
3646 x86asmexe_default="nasm"
3647 windres_default="windres"
3648 nvcc_default="nvcc"
3649 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3650 striptype="direct"
3651
3652 # OS
3653 target_os_default=$(tolower $(uname -s))
3654 host_os=$target_os_default
3655
3656 # machine
3657 if test "$target_os_default" = aix; then
3658     arch_default=$(uname -p)
3659     strip_default="strip -X32_64"
3660     nm_default="nm -g -X32_64"
3661 else
3662     arch_default=$(uname -m)
3663 fi
3664 cpu="generic"
3665 intrinsics="none"
3666
3667 # configurable options
3668 enable $PROGRAM_LIST
3669 enable $DOCUMENT_LIST
3670 enable $EXAMPLE_LIST
3671 enable $(filter_out avresample $LIBRARY_LIST)
3672 enable stripping
3673
3674 enable asm
3675 enable debug
3676 enable doc
3677 enable faan faandct faanidct
3678 enable optimizations
3679 enable runtime_cpudetect
3680 enable safe_bitstream_reader
3681 enable static
3682 enable swscale_alpha
3683 enable valgrind_backtrace
3684
3685 sws_max_filter_size_default=256
3686 set_default sws_max_filter_size
3687
3688 # internal components are enabled by default
3689 enable $EXTRALIBS_LIST
3690
3691 # Avoid external, non-system, libraries getting enabled by dependency resolution
3692 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3693
3694 # build settings
3695 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3696 LIBPREF="lib"
3697 LIBSUF=".a"
3698 FULLNAME='$(NAME)$(BUILDSUF)'
3699 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3700 SLIBPREF="lib"
3701 SLIBSUF=".so"
3702 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3703 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3704 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3705 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3706 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3707 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3708 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3709
3710 asflags_filter=echo
3711 cflags_filter=echo
3712 ldflags_filter=echo
3713
3714 AS_C='-c'
3715 AS_O='-o $@'
3716 CC_C='-c'
3717 CC_E='-E -o $@'
3718 CC_O='-o $@'
3719 CXX_C='-c'
3720 CXX_O='-o $@'
3721 OBJCC_C='-c'
3722 OBJCC_E='-E -o $@'
3723 OBJCC_O='-o $@'
3724 X86ASM_O='-o $@'
3725 LD_O='-o $@'
3726 LD_LIB='-l%'
3727 LD_PATH='-L'
3728 HOSTCC_C='-c'
3729 HOSTCC_E='-E -o $@'
3730 HOSTCC_O='-o $@'
3731 HOSTLD_O='-o $@'
3732 NVCC_C='-c'
3733 NVCC_O='-o $@'
3734
3735 host_extralibs='-lm'
3736 host_cflags_filter=echo
3737 host_ldflags_filter=echo
3738
3739 target_path='$(CURDIR)'
3740
3741 # since the object filename is not given with the -MM flag, the compiler
3742 # is only able to print the basename, and we must add the path ourselves
3743 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3744 DEPFLAGS='-MM'
3745
3746 mkdir -p ffbuild
3747
3748 # find source path
3749 if test -f configure; then
3750     source_path=.
3751 elif test -f src/configure; then
3752     source_path=src
3753 else
3754     source_path=$(cd $(dirname "$0"); pwd)
3755     case "$source_path" in
3756         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3757     esac
3758     test -e "$source_path/config.h" &&
3759         die "Out of tree builds are impossible with config.h in source dir."
3760 fi
3761
3762 for v in "$@"; do
3763     r=${v#*=}
3764     l=${v%"$r"}
3765     r=$(sh_quote "$r")
3766     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3767 done
3768
3769 find_things_extern(){
3770     thing=$1
3771     pattern=$2
3772     file=$source_path/$3
3773     out=${4:-$thing}
3774     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3775 }
3776
3777 find_filters_extern(){
3778     file=$source_path/$1
3779     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3780 }
3781
3782 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3783 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3784 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3785 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3786 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3787 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3788 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3789 CODEC_LIST="
3790     $ENCODER_LIST
3791     $DECODER_LIST
3792 "
3793 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3794 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3795 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3796 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3797
3798 AVCODEC_COMPONENTS_LIST="
3799     $BSF_LIST
3800     $DECODER_LIST
3801     $ENCODER_LIST
3802     $HWACCEL_LIST
3803     $PARSER_LIST
3804 "
3805
3806 AVDEVICE_COMPONENTS_LIST="
3807     $INDEV_LIST
3808     $OUTDEV_LIST
3809 "
3810
3811 AVFILTER_COMPONENTS_LIST="
3812     $FILTER_LIST
3813 "
3814
3815 AVFORMAT_COMPONENTS_LIST="
3816     $DEMUXER_LIST
3817     $MUXER_LIST
3818     $PROTOCOL_LIST
3819 "
3820
3821 ALL_COMPONENTS="
3822     $AVCODEC_COMPONENTS_LIST
3823     $AVDEVICE_COMPONENTS_LIST
3824     $AVFILTER_COMPONENTS_LIST
3825     $AVFORMAT_COMPONENTS_LIST
3826 "
3827
3828 for n in $COMPONENT_LIST; do
3829     v=$(toupper ${n%s})_LIST
3830     eval enable \$$v
3831     eval ${n}_if_any="\$$v"
3832 done
3833
3834 enable $ARCH_EXT_LIST
3835
3836 die_unknown(){
3837     echo "Unknown option \"$1\"."
3838     echo "See $0 --help for available options."
3839     exit 1
3840 }
3841
3842 print_in_columns() {
3843     cols=$(expr $ncols / 24)
3844     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3845 }
3846
3847 show_list() {
3848     suffix=_$1
3849     shift
3850     echo $* | sed s/$suffix//g | print_in_columns
3851     exit 0
3852 }
3853
3854 rand_list(){
3855     IFS=', '
3856     set -- $*
3857     unset IFS
3858     for thing; do
3859         comp=${thing%:*}
3860         prob=${thing#$comp}
3861         prob=${prob#:}
3862         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3863         echo "prob ${prob:-0.5}"
3864         printf '%s\n' $comp
3865     done
3866 }
3867
3868 do_random(){
3869     action=$1
3870     shift
3871     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3872     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3873 }
3874
3875 for opt do
3876     optval="${opt#*=}"
3877     case "$opt" in
3878         --extra-ldflags=*)
3879             add_ldflags $optval
3880         ;;
3881         --extra-ldexeflags=*)
3882             add_ldexeflags $optval
3883         ;;
3884         --extra-ldsoflags=*)
3885             add_ldsoflags $optval
3886         ;;
3887         --extra-ldlibflags=*)
3888             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3889                  "removed in the future. Use --extra-ldsoflags instead."
3890             add_ldsoflags $optval
3891         ;;
3892         --extra-libs=*)
3893             add_extralibs $optval
3894         ;;
3895         --disable-devices)
3896             disable $INDEV_LIST $OUTDEV_LIST
3897         ;;
3898         --enable-debug=*)
3899             debuglevel="$optval"
3900         ;;
3901         --disable-programs)
3902             disable $PROGRAM_LIST
3903         ;;
3904         --disable-everything)
3905             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3906         ;;
3907         --disable-all)
3908             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3909             disable $LIBRARY_LIST $PROGRAM_LIST doc
3910             enable avutil
3911         ;;
3912         --enable-random|--disable-random)
3913             action=${opt%%-random}
3914             do_random ${action#--} $COMPONENT_LIST
3915         ;;
3916         --enable-random=*|--disable-random=*)
3917             action=${opt%%-random=*}
3918             do_random ${action#--} $optval
3919         ;;
3920         --enable-sdl)
3921             enable sdl2
3922         ;;
3923         --enable-*=*|--disable-*=*)
3924             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3925             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3926             eval list=\$$(toupper $thing)_LIST
3927             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3928             list=$(filter "$name" $list)
3929             [ "$list" = "" ] && warn "Option $opt did not match anything"
3930             test $action = enable && warn_if_gets_disabled $list
3931             $action $list
3932         ;;
3933         --enable-yasm|--disable-yasm)
3934             warn "The ${opt} option is only provided for compatibility and will be\n"\
3935                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3936             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3937         ;;
3938         --yasmexe=*)
3939             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3940                  "removed in the future. Use --x86asmexe instead."
3941             x86asmexe="$optval"
3942         ;;
3943         --enable-?*|--disable-?*)
3944             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3945             if is_in $option $COMPONENT_LIST; then
3946                 test $action = disable && action=unset
3947                 eval $action \$$(toupper ${option%s})_LIST
3948             elif is_in $option $CMDLINE_SELECT; then
3949                 $action $option
3950             else
3951                 die_unknown $opt
3952             fi
3953         ;;
3954         --list-*)
3955             NAME="${opt#--list-}"
3956             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3957             NAME=${NAME%s}
3958             eval show_list $NAME \$$(toupper $NAME)_LIST
3959         ;;
3960         --help|-h) show_help
3961         ;;
3962         --quiet|-q) quiet=yes
3963         ;;
3964         --fatal-warnings) enable fatal_warnings
3965         ;;
3966         --libfuzzer=*)
3967             libfuzzer_path="$optval"
3968         ;;
3969         *)
3970             optname="${opt%%=*}"
3971             optname="${optname#--}"
3972             optname=$(echo "$optname" | sed 's/-/_/g')
3973             if is_in $optname $CMDLINE_SET; then
3974                 eval $optname='$optval'
3975             elif is_in $optname $CMDLINE_APPEND; then
3976                 append $optname "$optval"
3977             else
3978                 die_unknown $opt
3979             fi
3980         ;;
3981     esac
3982 done
3983
3984 for e in $env; do
3985     eval "export $e"
3986 done
3987
3988 if disabled autodetect; then
3989
3990     # Unless iconv is explicitely disabled by the user, we still want to probe
3991     # for the iconv from the libc.
3992     disabled iconv || enable libc_iconv
3993
3994     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3995     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3996 fi
3997 # Mark specifically enabled, but normally autodetected libraries as requested.
3998 for lib in $AUTODETECT_LIBS; do
3999     enabled $lib && request $lib
4000 done
4001 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4002 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4003 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4004
4005 disabled logging && logfile=/dev/null
4006
4007 # command line configuration sanity checks
4008
4009 # we need to build at least one lib type
4010 if ! enabled_any static shared; then
4011     cat <<EOF
4012 At least one library type must be built.
4013 Specify --enable-static to build the static libraries or --enable-shared to
4014 build the shared libraries as well. To only build the shared libraries specify
4015 --disable-static in addition to --enable-shared.
4016 EOF
4017     exit 1
4018 fi
4019
4020 die_license_disabled() {
4021     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4022 }
4023
4024 die_license_disabled_gpl() {
4025     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4026 }
4027
4028 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4029 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4030
4031 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4032 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4033
4034 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4035
4036 if enabled nonfree; then
4037     license="nonfree and unredistributable"
4038 elif enabled gplv3; then
4039     license="GPL version 3 or later"
4040 elif enabled lgplv3; then
4041     license="LGPL version 3 or later"
4042 elif enabled gpl; then
4043     license="GPL version 2 or later"
4044 else
4045     license="LGPL version 2.1 or later"
4046 fi
4047
4048 enabled_all gnutls openssl &&
4049     die "GnuTLS and OpenSSL must not be enabled at the same time."
4050
4051 enabled_all gnutls mbedtls &&
4052     die "GnuTLS and mbedTLS must not be enabled at the same time."
4053
4054 enabled_all openssl mbedtls &&
4055     die "OpenSSL and mbedTLS must not be enabled at the same time."
4056
4057 # Disable all the library-specific components if the library itself
4058 # is disabled, see AVCODEC_LIST and following _LIST variables.
4059
4060 disable_components(){
4061     disabled ${1} && disable $(
4062         eval components="\$$(toupper ${1})_COMPONENTS"
4063         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4064     )
4065 }
4066
4067 map 'disable_components $v' $LIBRARY_LIST
4068
4069 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4070 set >> $logfile
4071
4072 test -n "$valgrind" && toolchain="valgrind-memcheck"
4073
4074 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4075     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4076     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4077 }
4078
4079 case "$toolchain" in
4080     *-asan)
4081         cc_default="${toolchain%-asan}"
4082         add_cflags  -fsanitize=address
4083         add_ldflags -fsanitize=address
4084     ;;
4085     *-msan)
4086         cc_default="${toolchain%-msan}"
4087         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4088         add_ldflags -fsanitize=memory
4089     ;;
4090     *-tsan)
4091         cc_default="${toolchain%-tsan}"
4092         add_cflags  -fsanitize=thread
4093         add_ldflags -fsanitize=thread
4094         case "$toolchain" in
4095             gcc-tsan)
4096                 add_cflags  -fPIC
4097                 add_ldflags -fPIC
4098                 ;;
4099         esac
4100     ;;
4101     *-usan)
4102         cc_default="${toolchain%-usan}"
4103         add_cflags  -fsanitize=undefined
4104         add_ldflags -fsanitize=undefined
4105     ;;
4106     valgrind-*)
4107         target_exec_default="valgrind"
4108         case "$toolchain" in
4109             valgrind-massif)
4110                 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"
4111                 ;;
4112             valgrind-memcheck)
4113                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4114                 ;;
4115         esac
4116     ;;
4117     msvc)
4118         # Check whether the current MSVC version needs the C99 converter.
4119         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4120         # support enough of C99 to build ffmpeg. Default to the new
4121         # behaviour if the regexp was unable to match anything, since this
4122         # successfully parses the version number of existing supported
4123         # versions that require the converter (MSVC 2010 and 2012).
4124         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4125         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4126             cc_default="cl.exe"
4127             cxx_default="cl.exe"
4128         else
4129             die "Unsupported MSVC version (2013 or newer required)"
4130         fi
4131         ld_default="$source_path/compat/windows/mslink"
4132         nm_default="dumpbin.exe -symbols"
4133         ar_default="lib.exe"
4134         case "$arch" in
4135         aarch64|arm64)
4136             as_default="armasm64.exe"
4137             ;;
4138         arm*)
4139             as_default="armasm.exe"
4140             ;;
4141         esac
4142         target_os_default="win32"
4143         # Use a relative path for TMPDIR. This makes sure all the
4144         # ffconf temp files are written with a relative path, avoiding
4145         # issues with msys/win32 path conversion for MSVC parameters
4146         # such as -Fo<file> or -out:<file>.
4147         TMPDIR=.
4148     ;;
4149     icl)
4150         cc_default="icl"
4151         ld_default="xilink"
4152         nm_default="dumpbin -symbols"
4153         ar_default="xilib"
4154         target_os_default="win32"
4155         TMPDIR=.
4156     ;;
4157     gcov)
4158         add_cflags  -fprofile-arcs -ftest-coverage
4159         add_ldflags -fprofile-arcs -ftest-coverage
4160     ;;
4161     llvm-cov)
4162         add_cflags -fprofile-arcs -ftest-coverage
4163         add_ldflags --coverage
4164     ;;
4165     hardened)
4166         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4167         add_cflags   -fno-strict-overflow -fstack-protector-all
4168         add_ldflags  -Wl,-z,relro -Wl,-z,now
4169         add_cflags   -fPIE
4170         add_ldexeflags -fPIE -pie
4171     ;;
4172     ?*)
4173         die "Unknown toolchain $toolchain"
4174     ;;
4175 esac
4176
4177 if test -n "$cross_prefix"; then
4178     test -n "$arch" && test -n "$target_os" ||
4179         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4180     enable cross_compile
4181 fi
4182
4183 set_default target_os
4184 if test "$target_os" = android; then
4185     cc_default="clang"
4186 fi
4187
4188 ar_default="${cross_prefix}${ar_default}"
4189 cc_default="${cross_prefix}${cc_default}"
4190 cxx_default="${cross_prefix}${cxx_default}"
4191 nm_default="${cross_prefix}${nm_default}"
4192 pkg_config_default="${cross_prefix}${pkg_config_default}"
4193 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4194     ranlib_default="${cross_prefix}${ranlib_default} -D"
4195 else
4196     ranlib_default="${cross_prefix}${ranlib_default}"
4197 fi
4198 strip_default="${cross_prefix}${strip_default}"
4199 windres_default="${cross_prefix}${windres_default}"
4200
4201 sysinclude_default="${sysroot}/usr/include"
4202
4203 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4204     target_exec x86asmexe nvcc
4205 enabled cross_compile || host_cc_default=$cc
4206 set_default host_cc
4207
4208 pkg_config_fail_message=""
4209 if ! $pkg_config --version >/dev/null 2>&1; then
4210     warn "$pkg_config not found, library detection may fail."
4211     pkg_config=false
4212 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4213     pkg_config_fail_message="
4214 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4215 fi
4216
4217 if test $doxygen != $doxygen_default && \
4218   ! $doxygen --version >/dev/null 2>&1; then
4219     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4220 fi
4221
4222 exesuf() {
4223     case $1 in
4224         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4225     esac
4226 }
4227
4228 EXESUF=$(exesuf $target_os)
4229 HOSTEXESUF=$(exesuf $host_os)
4230
4231 # set temporary file name
4232 : ${TMPDIR:=$TEMPDIR}
4233 : ${TMPDIR:=$TMP}
4234 : ${TMPDIR:=/tmp}
4235
4236 if [ -n "$tempprefix" ] ; then
4237     mktemp(){
4238         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4239         echo "$tmpname"
4240         mkdir "$tmpname"
4241     }
4242 elif ! test_cmd mktemp -u XXXXXX; then
4243     # simple replacement for missing mktemp
4244     # NOT SAFE FOR GENERAL USE
4245     mktemp(){
4246         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4247         echo "$tmpname"
4248         mkdir "$tmpname"
4249     }
4250 fi
4251
4252 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4253     die "Unable to create temporary directory in $TMPDIR."
4254
4255 tmpfile(){
4256     tmp="${FFTMPDIR}/test"$2
4257     (set -C; exec > $tmp) 2> /dev/null ||
4258         die "Unable to create temporary file in $FFTMPDIR."
4259     eval $1=$tmp
4260 }
4261
4262 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4263 trap 'exit 2' INT
4264
4265 tmpfile TMPASM .asm
4266 tmpfile TMPC   .c
4267 tmpfile TMPCPP .cpp
4268 tmpfile TMPE   $EXESUF
4269 tmpfile TMPH   .h
4270 tmpfile TMPM   .m
4271 tmpfile TMPCU  .cu
4272 tmpfile TMPO   .o
4273 tmpfile TMPS   .S
4274 tmpfile TMPSH  .sh
4275 tmpfile TMPV   .ver
4276
4277 unset -f mktemp
4278
4279 chmod +x $TMPE
4280
4281 # make sure we can execute files in $TMPDIR
4282 cat > $TMPSH 2>> $logfile <<EOF
4283 #! /bin/sh
4284 EOF
4285 chmod +x $TMPSH >> $logfile 2>&1
4286 if ! $TMPSH >> $logfile 2>&1; then
4287     cat <<EOF
4288 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4289 variable to another directory and make sure that it is not mounted noexec.
4290 EOF
4291     die "Sanity test failed."
4292 fi
4293
4294 armasm_flags(){
4295     for flag; do
4296         case $flag in
4297             # Filter out MSVC cl.exe options from cflags that shouldn't
4298             # be passed to gas-preprocessor
4299             -M[TD]*)                                            ;;
4300             *)                  echo $flag                      ;;
4301         esac
4302    done
4303 }
4304
4305 cparser_flags(){
4306     for flag; do
4307         case $flag in
4308             -Wno-switch)             echo -Wno-switch-enum ;;
4309             -Wno-format-zero-length) ;;
4310             -Wdisabled-optimization) ;;
4311             -Wno-pointer-sign)       echo -Wno-other ;;
4312             *)                       echo $flag ;;
4313         esac
4314     done
4315 }
4316
4317 msvc_common_flags(){
4318     for flag; do
4319         case $flag in
4320             # In addition to specifying certain flags under the compiler
4321             # specific filters, they must be specified here as well or else the
4322             # generic catch all at the bottom will print the original flag.
4323             -Wall)                ;;
4324             -Wextra)              ;;
4325             -std=c99)             ;;
4326             # Common flags
4327             -fomit-frame-pointer) ;;
4328             -g)                   echo -Z7 ;;
4329             -fno-math-errno)      ;;
4330             -fno-common)          ;;
4331             -fno-signed-zeros)    ;;
4332             -fPIC)                ;;
4333             -mthumb)              ;;
4334             -march=*)             ;;
4335             -lz)                  echo zlib.lib ;;
4336             -lx264)               echo libx264.lib ;;
4337             -lstdc++)             ;;
4338             -l*)                  echo ${flag#-l}.lib ;;
4339             -LARGEADDRESSAWARE)   echo $flag ;;
4340             -L*)                  echo -libpath:${flag#-L} ;;
4341             *)                    echo $flag ;;
4342         esac
4343     done
4344 }
4345
4346 msvc_flags(){
4347     msvc_common_flags "$@"
4348     for flag; do
4349         case $flag in
4350             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4351                                        -wd4554 ;;
4352             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4353                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4354                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4355                                        -wd4307 \
4356                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4357         esac
4358     done
4359 }
4360
4361 icl_flags(){
4362     msvc_common_flags "$@"
4363     for flag; do
4364         case $flag in
4365             # Despite what Intel's documentation says -Wall, which is supported
4366             # on Windows, does enable remarks so disable them here.
4367             -Wall)                echo $flag -Qdiag-disable:remark ;;
4368             -std=c99)             echo -Qstd=c99 ;;
4369             -flto)                echo -ipo ;;
4370         esac
4371     done
4372 }
4373
4374 icc_flags(){
4375     for flag; do
4376         case $flag in
4377             -flto)                echo -ipo ;;
4378             *)                    echo $flag ;;
4379         esac
4380     done
4381 }
4382
4383 suncc_flags(){
4384     for flag; do
4385         case $flag in
4386             -march=*|-mcpu=*)
4387                 case "${flag#*=}" in
4388                     native)                   echo -xtarget=native       ;;
4389                     v9|niagara)               echo -xarch=sparc          ;;
4390                     ultrasparc)               echo -xarch=sparcvis       ;;
4391                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4392                     i586|pentium)             echo -xchip=pentium        ;;
4393                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4394                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4395                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4396                     pentium4*)          echo -xtarget=pentium4           ;;
4397                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4398                     *-sse3)             echo -xarch=sse3                 ;;
4399                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4400                     bonnell)                   echo -xarch=ssse3         ;;
4401                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4402                     westmere)                  echo -xtarget=westmere    ;;
4403                     silvermont)                echo -xarch=sse4_2        ;;
4404                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4405                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4406                                                echo -xarch=avx           ;;
4407                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4408                     btver1)                    echo -xarch=amdsse4a      ;;
4409                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4410                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4411                     k8|opteron|athlon64|athlon-fx)
4412                                                echo -xarch=sse2a         ;;
4413                     athlon*)                   echo -xarch=pentium_proa  ;;
4414                 esac
4415                 ;;
4416             -std=c99)             echo -xc99              ;;
4417             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4418             -fPIC)                echo -KPIC -xcode=pic32 ;;
4419             -W*,*)                echo $flag              ;;
4420             -f*-*|-W*|-mimpure-text)                      ;;
4421             -shared)              echo -G                 ;;
4422             *)                    echo $flag              ;;
4423         esac
4424     done
4425 }
4426
4427 probe_cc(){
4428     pfx=$1
4429     _cc=$2
4430     first=$3
4431
4432     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4433     unset _ld_o _ldflags _ld_lib _ld_path
4434     unset _depflags _DEPCMD _DEPFLAGS
4435     _flags_filter=echo
4436
4437     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4438         true # no-op to avoid reading stdin in following checks
4439     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4440         _type=llvm_gcc
4441         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4442         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4443         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4444         _cflags_speed='-O3'
4445         _cflags_size='-Os'
4446     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4447         _type=gcc
4448         gcc_version=$($_cc --version | head -n1)
4449         gcc_basever=$($_cc -dumpversion)
4450         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4451         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4452         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4453         case $gcc_basever in
4454             2) ;;
4455             2.*) ;;
4456             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4457         esac
4458         if [ "$first" = true ]; then
4459             case $gcc_basever in
4460                 4.2*)
4461                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4462             esac
4463         fi
4464         _cflags_speed='-O3'
4465         _cflags_size='-Os'
4466     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4467         _type=icc
4468         _ident=$($_cc --version | head -n1)
4469         _depflags='-MMD'
4470         _cflags_speed='-O3'
4471         _cflags_size='-Os'
4472         _cflags_noopt='-O1'
4473         _flags_filter=icc_flags
4474     elif $_cc -v 2>&1 | grep -q xlc; then
4475         _type=xlc
4476         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4477         _cflags_speed='-O5'
4478         _cflags_size='-O5 -qcompact'
4479     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4480         test -d "$sysroot" || die "No valid sysroot specified."
4481         _type=armcc
4482         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4483         armcc_conf="$PWD/armcc.conf"
4484         $_cc --arm_linux_configure                 \
4485              --arm_linux_config_file="$armcc_conf" \
4486              --configure_sysroot="$sysroot"        \
4487              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4488              die "Error creating armcc configuration file."
4489         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4490         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4491         as_default="${cross_prefix}gcc"
4492         _depflags='-MMD'
4493         _cflags_speed='-O3'
4494         _cflags_size='-Os'
4495     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4496         _type=clang
4497         _ident=$($_cc --version 2>/dev/null | head -n1)
4498         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4499         _cflags_speed='-O3'
4500         _cflags_size='-Oz'
4501     elif $_cc -V 2>&1 | grep -q Sun; then
4502         _type=suncc
4503         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4504         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4505         _DEPFLAGS='-xM1 -xc99'
4506         _ldflags='-std=c99'
4507         _cflags_speed='-O5'
4508         _cflags_size='-O5 -xspace'
4509         _flags_filter=suncc_flags
4510     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4511         _type=pathscale
4512         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4513         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4514         _cflags_speed='-O2'
4515         _cflags_size='-Os'
4516         _flags_filter='filter_out -Wdisabled-optimization'
4517     elif $_cc -v 2>&1 | grep -q Open64; then
4518         _type=open64
4519         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4520         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4521         _cflags_speed='-O2'
4522         _cflags_size='-Os'
4523         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4524     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4525         _type=armasm
4526         _ident=$($_cc | head -n1)
4527         # 4509: "This form of conditional instruction is deprecated"
4528         _flags="-nologo -ignore 4509"
4529         _flags_filter=armasm_flags
4530     elif $_cc 2>&1 | grep -q Intel; then
4531         _type=icl
4532         _ident=$($_cc 2>&1 | head -n1)
4533         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4534         # Not only is O3 broken on 13.x+ but it is slower on all previous
4535         # versions (tested) as well.
4536         _cflags_speed="-O2"
4537         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4538         if $_cc 2>&1 | grep -q Linker; then
4539             _ld_o='-out:$@'
4540         else
4541             _ld_o='-Fe$@'
4542         fi
4543         _cc_o='-Fo$@'
4544         _cc_e='-P'
4545         _flags_filter=icl_flags
4546         _ld_lib='lib%.a'
4547         _ld_path='-libpath:'
4548         # -Qdiag-error to make icl error when seeing certain unknown arguments
4549         _flags='-nologo -Qdiag-error:4044,10157'
4550         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4551         # with MSVC which enables it by default.
4552         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4553         disable stripping
4554     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4555         # lld can emulate multiple different linkers; in ms link.exe mode,
4556         # the -? parameter gives the help output which contains an identifyable
4557         # string, while it gives an error in other modes.
4558         _type=lld-link
4559         # The link.exe mode doesn't have a switch for getting the version,
4560         # but we can force it back to gnu mode and get the version from there.
4561         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4562         _ld_o='-out:$@'
4563         _flags_filter=msvc_flags
4564         _ld_lib='lib%.a'
4565         _ld_path='-libpath:'
4566     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4567         _type=msvc
4568         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4569         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4570         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4571         _cflags_speed="-O2"
4572         _cflags_size="-O1"
4573         _cflags_noopt="-O1"
4574         if $_cc -nologo- 2>&1 | grep -q Linker; then
4575             _ld_o='-out:$@'
4576         else
4577             _ld_o='-Fe$@'
4578         fi
4579         _cc_o='-Fo$@'
4580         _cc_e='-P -Fi$@'
4581         _flags_filter=msvc_flags
4582         _ld_lib='lib%.a'
4583         _ld_path='-libpath:'
4584         _flags='-nologo'
4585         disable stripping
4586     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4587         _type=cparser
4588         _ident=$($_cc --version | head -n1)
4589         _depflags='-MMD'
4590         _cflags_speed='-O4'
4591         _cflags_size='-O2'
4592         _flags_filter=cparser_flags
4593     fi
4594
4595     eval ${pfx}_type=\$_type
4596     eval ${pfx}_ident=\$_ident
4597 }
4598
4599 set_ccvars(){
4600     eval ${1}_C=\${_cc_c-\${${1}_C}}
4601     eval ${1}_E=\${_cc_e-\${${1}_E}}
4602     eval ${1}_O=\${_cc_o-\${${1}_O}}
4603
4604     if [ -n "$_depflags" ]; then
4605         eval ${1}_DEPFLAGS=\$_depflags
4606     else
4607         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4608         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4609         eval DEP${1}FLAGS=\$_flags
4610     fi
4611 }
4612
4613 probe_cc cc "$cc" "true"
4614 cflags_filter=$_flags_filter
4615 cflags_speed=$_cflags_speed
4616 cflags_size=$_cflags_size
4617 cflags_noopt=$_cflags_noopt
4618 add_cflags $_flags $_cflags
4619 cc_ldflags=$_ldflags
4620 set_ccvars CC
4621 set_ccvars CXX
4622
4623 probe_cc hostcc "$host_cc"
4624 host_cflags_filter=$_flags_filter
4625 host_cflags_speed=$_cflags_speed
4626 add_host_cflags  $_flags $_cflags
4627 set_ccvars HOSTCC
4628
4629 test -n "$cc_type" && enable $cc_type ||
4630     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4631
4632 : ${as_default:=$cc}
4633 : ${objcc_default:=$cc}
4634 : ${dep_cc_default:=$cc}
4635 : ${ld_default:=$cc}
4636 : ${host_ld_default:=$host_cc}
4637 set_default ar as objcc dep_cc ld ln_s host_ld windres
4638
4639 probe_cc as "$as"
4640 asflags_filter=$_flags_filter
4641 add_asflags $_flags $_cflags
4642 set_ccvars AS
4643
4644 probe_cc objcc "$objcc"
4645 objcflags_filter=$_flags_filter
4646 add_objcflags $_flags $_cflags
4647 set_ccvars OBJC
4648
4649 probe_cc ld "$ld"
4650 ldflags_filter=$_flags_filter
4651 add_ldflags $_flags $_ldflags
4652 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4653 LD_O=${_ld_o-$LD_O}
4654 LD_LIB=${_ld_lib-$LD_LIB}
4655 LD_PATH=${_ld_path-$LD_PATH}
4656
4657 probe_cc hostld "$host_ld"
4658 host_ldflags_filter=$_flags_filter
4659 add_host_ldflags $_flags $_ldflags
4660 HOSTLD_O=${_ld_o-$HOSTLD_O}
4661
4662 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4663     probe_cc depcc "$dep_cc"
4664     CCDEP=${_DEPCMD:-$DEPCMD}
4665     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4666     DEPCCFLAGS=$_flags
4667 fi
4668
4669 if $ar 2>&1 | grep -q Microsoft; then
4670     arflags="-nologo"
4671     ar_o='-out:$@'
4672 elif $ar 2>&1 | grep -q "\[D\] "; then
4673     arflags="rcD"
4674     ar_o='$@'
4675 else
4676     arflags="rc"
4677     ar_o='$@'
4678 fi
4679
4680 add_cflags $extra_cflags
4681 add_cxxflags $extra_cxxflags
4682 add_objcflags $extra_objcflags
4683 add_asflags $extra_cflags
4684
4685 if test -n "$sysroot"; then
4686     case "$cc_type" in
4687         gcc|llvm_gcc|clang)
4688             add_cppflags --sysroot="$sysroot"
4689             add_ldflags --sysroot="$sysroot"
4690         ;;
4691     esac
4692 fi
4693
4694 if test "$cpu" = host; then
4695     enabled cross_compile &&
4696         die "--cpu=host makes no sense when cross-compiling."
4697
4698     case "$cc_type" in
4699         gcc|llvm_gcc)
4700             check_native(){
4701                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4702                 sed -n "/cc1.*$1=/{
4703                             s/.*$1=\\([^ ]*\\).*/\\1/
4704                             p
4705                             q
4706                         }" $TMPE
4707             }
4708             cpu=$(check_native -march || check_native -mcpu)
4709         ;;
4710         clang)
4711             check_native(){
4712                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4713                 sed -n "/cc1.*-target-cpu /{
4714                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4715                             p
4716                             q
4717                         }" $TMPE
4718             }
4719             cpu=$(check_native -march)
4720         ;;
4721     esac
4722
4723     test "${cpu:-host}" = host &&
4724         die "--cpu=host not supported with compiler $cc"
4725 fi
4726
4727 # Deal with common $arch aliases
4728 case "$arch" in
4729     aarch64|arm64)
4730         arch="aarch64"
4731     ;;
4732     arm*|iPad*|iPhone*)
4733         arch="arm"
4734     ;;
4735     mips*|IP*)
4736         case "$arch" in
4737         *el)
4738             add_cppflags -EL
4739             add_ldflags -EL
4740         ;;
4741         *eb)
4742             add_cppflags -EB
4743             add_ldflags -EB
4744         ;;
4745         esac
4746         arch="mips"
4747     ;;
4748     parisc*|hppa*)
4749         arch="parisc"
4750     ;;
4751     "Power Macintosh"|ppc*|powerpc*)
4752         arch="ppc"
4753     ;;
4754     s390|s390x)
4755         arch="s390"
4756     ;;
4757     sh4|sh)
4758         arch="sh4"
4759     ;;
4760     sun4*|sparc*)
4761         arch="sparc"
4762     ;;
4763     tilegx|tile-gx)
4764         arch="tilegx"
4765     ;;
4766     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4767         arch="x86"
4768     ;;
4769 esac
4770
4771 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4772 enable $arch
4773
4774 # Add processor-specific flags
4775 if enabled aarch64; then
4776
4777     case $cpu in
4778         armv*)
4779             cpuflags="-march=$cpu"
4780         ;;
4781         *)
4782             cpuflags="-mcpu=$cpu"
4783         ;;
4784     esac
4785
4786 elif enabled alpha; then
4787
4788     cpuflags="-mcpu=$cpu"
4789
4790 elif enabled arm; then
4791
4792     check_arm_arch() {
4793         test_cpp_condition stddef.h \
4794             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4795             $cpuflags
4796     }
4797
4798     probe_arm_arch() {
4799         if   check_arm_arch 4;        then echo armv4
4800         elif check_arm_arch 4T;       then echo armv4t
4801         elif check_arm_arch 5;        then echo armv5
4802         elif check_arm_arch 5E;       then echo armv5e
4803         elif check_arm_arch 5T;       then echo armv5t
4804         elif check_arm_arch 5TE;      then echo armv5te
4805         elif check_arm_arch 5TEJ;     then echo armv5te
4806         elif check_arm_arch 6;        then echo armv6
4807         elif check_arm_arch 6J;       then echo armv6j
4808         elif check_arm_arch 6K;       then echo armv6k
4809         elif check_arm_arch 6Z;       then echo armv6z
4810         elif check_arm_arch 6KZ;      then echo armv6zk
4811         elif check_arm_arch 6ZK;      then echo armv6zk
4812         elif check_arm_arch 6T2;      then echo armv6t2
4813         elif check_arm_arch 7;        then echo armv7
4814         elif check_arm_arch 7A  7_A;  then echo armv7-a
4815         elif check_arm_arch 7S;       then echo armv7-a
4816         elif check_arm_arch 7R  7_R;  then echo armv7-r
4817         elif check_arm_arch 7M  7_M;  then echo armv7-m
4818         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4819         elif check_arm_arch 8A  8_A;  then echo armv8-a
4820         fi
4821     }
4822
4823     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4824
4825     case $cpu in
4826         armv*)
4827             cpuflags="-march=$cpu"
4828             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4829         ;;
4830         *)
4831             cpuflags="-mcpu=$cpu"
4832             case $cpu in
4833                 cortex-a*)                               subarch=armv7a  ;;
4834                 cortex-r*)                               subarch=armv7r  ;;
4835                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4836                 arm11*)                                  subarch=armv6   ;;
4837                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4838                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4839                 *)                             subarch=$(probe_arm_arch) ;;
4840             esac
4841         ;;
4842     esac
4843
4844     case "$subarch" in
4845         armv5t*)    enable fast_clz                ;;
4846         armv[6-8]*)
4847             enable fast_clz
4848             disabled fast_unaligned || enable fast_unaligned
4849             ;;
4850     esac
4851
4852 elif enabled avr32; then
4853
4854     case $cpu in
4855         ap7[02]0[0-2])
4856             subarch="avr32_ap"
4857             cpuflags="-mpart=$cpu"
4858         ;;
4859         ap)
4860             subarch="avr32_ap"
4861             cpuflags="-march=$cpu"
4862         ;;
4863         uc3[ab]*)
4864             subarch="avr32_uc"
4865             cpuflags="-mcpu=$cpu"
4866         ;;
4867         uc)
4868             subarch="avr32_uc"
4869             cpuflags="-march=$cpu"
4870         ;;
4871     esac
4872
4873 elif enabled bfin; then
4874
4875     cpuflags="-mcpu=$cpu"
4876
4877 elif enabled mips; then
4878
4879     cpuflags="-march=$cpu"
4880
4881     if [ "$cpu" != "generic" ]; then
4882         disable mips32r2
4883         disable mips32r5
4884         disable mips64r2
4885         disable mips32r6
4886         disable mips64r6
4887         disable loongson2
4888         disable loongson3
4889
4890         case $cpu in
4891             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4892                 enable mips32r2
4893                 disable msa
4894             ;;
4895             p5600|i6400|p6600)
4896                 disable mipsdsp
4897                 disable mipsdspr2
4898             ;;
4899             loongson*)
4900                 enable loongson2
4901                 enable loongson3
4902                 enable local_aligned
4903                 enable simd_align_16
4904                 enable fast_64bit
4905                 enable fast_clz
4906                 enable fast_cmov
4907                 enable fast_unaligned
4908                 disable aligned_stack
4909                 disable mipsdsp
4910                 disable mipsdspr2
4911                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4912                 if [ $cc == gcc ]; then
4913                     gcc_version=$(gcc -dumpversion)
4914                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4915                         expensive_optimization_flag=""
4916                     else
4917                         expensive_optimization_flag="-fno-expensive-optimizations"
4918                     fi
4919                 fi
4920                 case $cpu in
4921                     loongson3*)
4922                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4923                     ;;
4924                     loongson2e)
4925                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4926                     ;;
4927                     loongson2f)
4928                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4929                     ;;
4930                 esac
4931             ;;
4932             *)
4933                 # Unknown CPU. Disable everything.
4934                 warn "unknown CPU. Disabling all MIPS optimizations."
4935                 disable mipsfpu
4936                 disable mipsdsp
4937                 disable mipsdspr2
4938                 disable msa
4939                 disable mmi
4940             ;;
4941         esac
4942
4943         case $cpu in
4944             24kc)
4945                 disable mipsfpu
4946                 disable mipsdsp
4947                 disable mipsdspr2
4948             ;;
4949             24kf*)
4950                 disable mipsdsp
4951                 disable mipsdspr2
4952             ;;
4953             24kec|34kc|1004kc)
4954                 disable mipsfpu
4955                 disable mipsdspr2
4956             ;;
4957             24kef*|34kf*|1004kf*)
4958                 disable mipsdspr2
4959             ;;
4960             74kc)
4961                 disable mipsfpu
4962             ;;
4963             p5600)
4964                 enable mips32r5
4965                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4966             ;;
4967             i6400)
4968                 enable mips64r6
4969                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4970             ;;
4971             p6600)
4972                 enable mips64r6
4973                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4974             ;;
4975         esac
4976     else
4977         # We do not disable anything. Is up to the user to disable the unwanted features.
4978         warn 'generic cpu selected'
4979     fi
4980
4981 elif enabled ppc; then
4982
4983     disable ldbrx
4984
4985     case $(tolower $cpu) in
4986         601|ppc601|powerpc601)
4987             cpuflags="-mcpu=601"
4988             disable altivec
4989         ;;
4990         603*|ppc603*|powerpc603*)
4991             cpuflags="-mcpu=603"
4992             disable altivec
4993         ;;
4994         604*|ppc604*|powerpc604*)
4995             cpuflags="-mcpu=604"
4996             disable altivec
4997         ;;
4998         g3|75*|ppc75*|powerpc75*)
4999             cpuflags="-mcpu=750"
5000             disable altivec
5001         ;;
5002         g4|745*|ppc745*|powerpc745*)
5003             cpuflags="-mcpu=7450"
5004             disable vsx
5005         ;;
5006         74*|ppc74*|powerpc74*)
5007             cpuflags="-mcpu=7400"
5008             disable vsx
5009         ;;
5010         g5|970|ppc970|powerpc970)
5011             cpuflags="-mcpu=970"
5012             disable vsx
5013         ;;
5014         power[3-6]*)
5015             cpuflags="-mcpu=$cpu"
5016             disable vsx
5017         ;;
5018         power[7-8]*)
5019             cpuflags="-mcpu=$cpu"
5020         ;;
5021         cell)
5022             cpuflags="-mcpu=cell"
5023             enable ldbrx
5024             disable vsx
5025         ;;
5026         e500mc)
5027             cpuflags="-mcpu=e500mc"
5028             disable altivec
5029         ;;
5030         e500v2)
5031             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5032             disable altivec
5033             disable dcbzl
5034         ;;
5035         e500)
5036             cpuflags="-mcpu=8540 -mhard-float"
5037             disable altivec
5038             disable dcbzl
5039         ;;
5040     esac
5041
5042 elif enabled sparc; then
5043
5044     case $cpu in
5045         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5046             cpuflags="-mcpu=$cpu"
5047         ;;
5048         ultrasparc*|niagara[234])
5049             cpuflags="-mcpu=$cpu"
5050         ;;
5051     esac
5052
5053 elif enabled x86; then
5054
5055     case $cpu in
5056         i[345]86|pentium)
5057             cpuflags="-march=$cpu"
5058             disable i686
5059             disable mmx
5060         ;;
5061         # targets that do NOT support nopl and conditional mov (cmov)
5062         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5063             cpuflags="-march=$cpu"
5064             disable i686
5065         ;;
5066         # targets that do support nopl and conditional mov (cmov)
5067         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5068         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5069         |amdfam10|barcelona|b[dt]ver*|znver*)
5070             cpuflags="-march=$cpu"
5071             enable i686
5072             enable fast_cmov
5073         ;;
5074         # targets that do support conditional mov but on which it's slow
5075         pentium4|pentium4m|prescott|nocona)
5076             cpuflags="-march=$cpu"
5077             enable i686
5078             disable fast_cmov
5079         ;;
5080     esac
5081
5082 fi
5083
5084 if [ "$cpu" != generic ]; then
5085     add_cflags  $cpuflags
5086     add_asflags $cpuflags
5087     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5088 fi
5089
5090 # compiler sanity check
5091 test_exec <<EOF
5092 int main(void){ return 0; }
5093 EOF
5094 if test "$?" != 0; then
5095     echo "$cc is unable to create an executable file."
5096     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5097         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5098         echo "Only do this if you know what cross compiling means."
5099     fi
5100     die "C compiler test failed."
5101 fi
5102
5103 add_cppflags -D_ISOC99_SOURCE
5104 add_cxxflags -D__STDC_CONSTANT_MACROS
5105 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5106
5107 # some compilers silently accept -std=c11, so we also need to check that the
5108 # version macro is defined properly
5109 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5110     add_cflags -std=c11 ||
5111     check_cflags -std=c99
5112
5113 check_cppflags -D_FILE_OFFSET_BITS=64
5114 check_cppflags -D_LARGEFILE_SOURCE
5115
5116 add_host_cppflags -D_ISOC99_SOURCE
5117 check_host_cflags -std=c99
5118 check_host_cflags -Wall
5119 check_host_cflags $host_cflags_speed
5120
5121 check_64bit(){
5122     arch32=$1
5123     arch64=$2
5124     expr=${3:-'sizeof(void *) > 4'}
5125     test_code cc "" "int test[2*($expr) - 1]" &&
5126         subarch=$arch64 || subarch=$arch32
5127     enable $subarch
5128 }
5129
5130 case "$arch" in
5131     aarch64|alpha|ia64)
5132         enabled shared && enable_weak pic
5133     ;;
5134     mips)
5135         check_64bit mips mips64 '_MIPS_SIM > 1'
5136         enabled shared && enable_weak pic
5137     ;;
5138     parisc)
5139         check_64bit parisc parisc64
5140         enabled shared && enable_weak pic
5141     ;;
5142     ppc)
5143         check_64bit ppc ppc64
5144         enabled shared && enable_weak pic
5145     ;;
5146     s390)
5147         check_64bit s390 s390x
5148         enabled shared && enable_weak pic
5149     ;;
5150     sparc)
5151         check_64bit sparc sparc64
5152         enabled shared && enable_weak pic
5153     ;;
5154     x86)
5155         check_64bit x86_32 x86_64
5156         # Treat x32 as x64 for now. Note it also needs pic if shared
5157         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5158             subarch=x86_64 && enable x86_64 && disable x86_32
5159         if enabled x86_64; then
5160             enabled shared && enable_weak pic
5161             objformat=elf64
5162         fi
5163     ;;
5164 esac
5165
5166 # OS specific
5167 case $target_os in
5168     aix)
5169         SHFLAGS=-shared
5170         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5171         enabled shared && add_ldflags -Wl,-brtl
5172         arflags='-Xany -r -c'
5173         striptype=""
5174         ;;
5175     android)
5176         disable symver
5177         enable section_data_rel_ro
5178         add_cflags -fPIE
5179         add_ldexeflags -fPIE -pie
5180         SLIB_INSTALL_NAME='$(SLIBNAME)'
5181         SLIB_INSTALL_LINKS=
5182         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5183         ;;
5184     haiku)
5185         prefix_default="/boot/common"
5186         network_extralibs="-lnetwork"
5187         host_extralibs=
5188         ;;
5189     sunos)
5190         SHFLAGS='-shared -Wl,-h,$$(@F)'
5191         enabled x86 && append SHFLAGS -mimpure-text
5192         network_extralibs="-lsocket -lnsl"
5193         add_cppflags -D__EXTENSIONS__
5194         # When using suncc to build, the Solaris linker will mark
5195         # an executable with each instruction set encountered by
5196         # the Solaris assembler.  As our libraries contain their own
5197         # guards for processor-specific code, instead suppress
5198         # generation of the HWCAPS ELF section on Solaris x86 only.
5199         enabled_all suncc x86 &&
5200             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5201             add_ldflags -Wl,-M,mapfile
5202         nm_default='nm -P -g'
5203         striptype=""
5204         version_script='-M'
5205         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5206         ;;
5207     netbsd)
5208         disable symver
5209         oss_indev_extralibs="-lossaudio"
5210         oss_outdev_extralibs="-lossaudio"
5211         enabled gcc || check_ldflags -Wl,-zmuldefs
5212         ;;
5213     openbsd|bitrig)
5214         disable symver
5215         striptype=""
5216         SHFLAGS='-shared'
5217         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5218         SLIB_INSTALL_LINKS=
5219         oss_indev_extralibs="-lossaudio"
5220         oss_outdev_extralibs="-lossaudio"
5221         ;;
5222     dragonfly)
5223         disable symver
5224         ;;
5225     freebsd)
5226         ;;
5227     bsd/os)
5228         add_extralibs -lpoll -lgnugetopt
5229         strip="strip -d"
5230         ;;
5231     darwin)
5232         enabled ppc && add_asflags -force_cpusubtype_ALL
5233         install_name_dir_default='$(SHLIBDIR)'
5234         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5235         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5236         strip="${strip} -x"
5237         add_ldflags -Wl,-dynamic,-search_paths_first
5238         check_cflags -Werror=partial-availability
5239         SLIBSUF=".dylib"
5240         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5241         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5242         enabled x86_64 && objformat="macho64" || objformat="macho32"
5243         enabled_any pic shared x86_64 ||
5244             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5245         check_headers dispatch/dispatch.h &&
5246             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5247         if test -n "$sysroot"; then
5248             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5249             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5250         fi
5251         version_script='-exported_symbols_list'
5252         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5253         ;;
5254     msys*)
5255         die "Native MSYS builds are discouraged, please use the MINGW environment."
5256         ;;
5257     mingw32*|mingw64*)
5258         target_os=mingw32
5259         LIBTARGET=i386
5260         if enabled x86_64; then
5261             LIBTARGET="i386:x86-64"
5262         elif enabled arm; then
5263             LIBTARGET="arm"
5264         elif enabled aarch64; then
5265             LIBTARGET="arm64"
5266         fi
5267         if enabled shared; then
5268             # Cannot build both shared and static libs when using dllimport.
5269             disable static
5270         fi
5271         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5272         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5273         shlibdir_default="$bindir_default"
5274         SLIBPREF=""
5275         SLIBSUF=".dll"
5276         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5277         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5278         if test_cmd lib.exe -list; then
5279             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5280             if enabled x86_64; then
5281                 LIBTARGET=x64
5282             fi
5283         else
5284             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5285         fi
5286         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5287         SLIB_INSTALL_LINKS=
5288         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5289         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5290         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5291         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5292         enabled x86_64 && objformat="win64" || objformat="win32"
5293         dlltool="${cross_prefix}dlltool"
5294         ranlib=:
5295         enable dos_paths
5296         check_ldflags -Wl,--nxcompat,--dynamicbase
5297         # Lets work around some stupidity in binutils.
5298         # ld will strip relocations from executables even though we need them
5299         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5300         # however ld then forgets what the entry point should be (oops) so we
5301         # have to manually (re)set it.
5302         if enabled x86_32; then
5303             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5304         elif enabled x86_64; then
5305             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5306             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5307             # Set image base >4GB for extra entropy with HEASLR
5308             add_ldexeflags -Wl,--image-base,0x140000000
5309             append SHFLAGS -Wl,--image-base,0x180000000
5310         fi
5311         ;;
5312     win32|win64)
5313         disable symver
5314         if enabled shared; then
5315             # Link to the import library instead of the normal static library
5316             # for shared libs.
5317             LD_LIB='%.lib'
5318             # Cannot build both shared and static libs with MSVC or icl.
5319             disable static
5320         fi
5321         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5322         shlibdir_default="$bindir_default"
5323         SLIBPREF=""
5324         SLIBSUF=".dll"
5325         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5326         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5327         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5328         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5329         SLIB_INSTALL_LINKS=
5330         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5331         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5332         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5333         enabled x86_64 && objformat="win64" || objformat="win32"
5334         ranlib=:
5335         enable dos_paths
5336         ;;
5337     cygwin*)
5338         target_os=cygwin
5339         shlibdir_default="$bindir_default"
5340         SLIBPREF="cyg"
5341         SLIBSUF=".dll"
5342         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5343         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5344         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5345         SLIB_INSTALL_LINKS=
5346         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5347         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5348         enabled x86_64 && objformat="win64" || objformat="win32"
5349         enable dos_paths
5350         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5351         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5352         ;;
5353     *-dos|freedos|opendos)
5354         network_extralibs="-lsocket"
5355         objformat="coff"
5356         enable dos_paths
5357         ;;
5358     linux)
5359         enable section_data_rel_ro
5360         enabled_any arm aarch64 && enable_weak linux_perf
5361         ;;
5362     irix*)
5363         target_os=irix
5364         ranlib="echo ignoring ranlib"
5365         ;;
5366     os/2*)
5367         strip="lxlite -CS"
5368         striptype=""
5369         objformat="aout"
5370         add_cppflags -D_GNU_SOURCE
5371         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5372         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5373         LIBSUF="_s.a"
5374         SLIBPREF=""
5375         SLIBSUF=".dll"
5376         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5377         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5378         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5379             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5380             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5381             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5382             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5383         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5384             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5385         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5386         SLIB_INSTALL_LINKS=
5387         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5388         enable dos_paths
5389         enable_weak os2threads
5390         ;;
5391     gnu/kfreebsd)
5392         add_cppflags -D_BSD_SOURCE
5393         ;;
5394     gnu)
5395         ;;
5396     qnx)
5397         add_cppflags -D_QNX_SOURCE
5398         network_extralibs="-lsocket"
5399         ;;
5400     symbian)
5401         SLIBSUF=".dll"
5402         enable dos_paths
5403         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5404         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5405         add_ldflags -Wl,--target1-abs,--no-undefined \
5406                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5407                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5408         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5409                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5410                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5411         ;;
5412     minix)
5413         ;;
5414     none)
5415         ;;
5416     *)
5417         die "Unknown OS '$target_os'."
5418         ;;
5419 esac
5420
5421 # test if creating links works
5422 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5423 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5424 mkdir "$link_dest"
5425 $ln_s "$link_dest" "$link_name"
5426 touch "$link_dest/test_file"
5427 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5428     # create link to source path
5429     [ -e src ] && rm src
5430     $ln_s "$source_path" src
5431     source_link=src
5432 else
5433     # creating directory links doesn't work
5434     # fall back to using the full source path
5435     source_link="$source_path"
5436 fi
5437 # cleanup
5438 rm -r "$link_dest"
5439 rm -r "$link_name"
5440
5441 # determine libc flavour
5442
5443 probe_libc(){
5444     pfx=$1
5445     pfx_no_=${pfx%_}
5446     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5447     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5448         eval ${pfx}libc_type=uclibc
5449         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5450     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5451         eval ${pfx}libc_type=glibc
5452         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5453     # MinGW headers can be installed on Cygwin, so check for newlib first.
5454     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5455         eval ${pfx}libc_type=newlib
5456         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5457     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5458     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5459         eval ${pfx}libc_type=mingw64
5460         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5461             add_compat msvcrt/snprintf.o
5462             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5463         fi
5464         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5465         eval test \$${pfx_no_}cc_type = "gcc" &&
5466             add_${pfx}cppflags -D__printf__=__gnu_printf__
5467         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5468             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5469         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5470     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5471          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5472         eval ${pfx}libc_type=mingw32
5473         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5474             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5475             die "ERROR: MinGW32 runtime version must be >= 3.15."
5476         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5477         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5478             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5479         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5480             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5481         eval test \$${pfx_no_}cc_type = "gcc" &&
5482             add_${pfx}cppflags -D__printf__=__gnu_printf__
5483         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5484     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5485         eval ${pfx}libc_type=msvcrt
5486         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5487             if [ "$pfx" = host_ ]; then
5488                 add_host_cppflags -Dsnprintf=_snprintf
5489             else
5490                 add_compat strtod.o strtod=avpriv_strtod
5491                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5492                                              _snprintf=avpriv_snprintf  \
5493                                              vsnprintf=avpriv_vsnprintf
5494             fi
5495         fi
5496         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5497         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5498         # 0x601 by default unless something else is set by the user.
5499         # This can easily lead to us detecting functions only present
5500         # in such new versions and producing binaries requiring windows 7.0.
5501         # Therefore explicitly set the default to Vista unless the user has
5502         # set something else on the command line.
5503         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5504         # family. For these cases, configure is free to use any functions
5505         # found in the SDK headers by default. (Alternatively, we could force
5506         # _WIN32_WINNT to 0x0602 in that case.)
5507         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5508             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5509 #ifdef WINAPI_FAMILY
5510 #include <winapifamily.h>
5511 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5512 #error not desktop
5513 #endif
5514 #endif
5515 EOF
5516         if [ "$pfx" = "" ]; then
5517             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5518             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5519         fi
5520     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5521         eval ${pfx}libc_type=klibc
5522     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5523         eval ${pfx}libc_type=bionic
5524     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5525         eval ${pfx}libc_type=solaris
5526         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5527     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5528         eval ${pfx}libc_type=djgpp
5529         add_cppflags -U__STRICT_ANSI__
5530         add_cflags "-include $source_path/compat/djgpp/math.h"
5531         add_compat djgpp/math.o
5532     fi
5533     test_${pfx}cc <<EOF
5534 #include <time.h>
5535 void *v = localtime_r;
5536 EOF
5537 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5538 #include <time.h>
5539 void *v = localtime_r;
5540 EOF
5541
5542     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5543 }
5544
5545 probe_libc
5546 probe_libc host_
5547
5548 # hacks for compiler/libc/os combinations
5549
5550 case $libc_type in
5551     bionic)
5552         add_compat strtod.o strtod=avpriv_strtod
5553         ;;
5554 esac
5555
5556 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5557     add_cppflags '-I\$(SRC_PATH)/compat/float'
5558
5559 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5560
5561 set_default libdir
5562 : ${shlibdir_default:="$libdir"}
5563 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5564
5565 set_default $PATHS_LIST
5566 set_default nm
5567
5568 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5569
5570 enable_weak_pic() {
5571     disabled pic && return
5572     enable pic
5573     add_cppflags -DPIC
5574     case "$target_os" in
5575     mingw*|cygwin*|win*)
5576         ;;
5577     *)
5578         add_cflags -fPIC
5579         add_asflags -fPIC
5580         ;;
5581     esac
5582 }
5583
5584 enabled pic && enable_weak_pic
5585
5586 test_cc <<EOF || die "Symbol mangling check failed."
5587 int ff_extern;
5588 EOF
5589 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5590 extern_prefix=${sym%%ff_extern*}
5591
5592 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5593
5594 for restrict_keyword in restrict __restrict__ __restrict ""; do
5595     test_code cc "" "char * $restrict_keyword p" && break
5596 done
5597
5598 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5599
5600 # The global variable ensures the bits appear unchanged in the object file.
5601 test_cc <<EOF || die "endian test failed"
5602 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5603 EOF
5604 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5605
5606 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5607
5608 if ! enabled ppc64 || enabled bigendian; then
5609     disable vsx
5610 fi
5611
5612 check_gas() {
5613     log "check_gas using '$as' as AS"
5614     # :vararg is used on aarch64, arm and ppc altivec
5615     check_as vararg "
5616 .macro m n, y:vararg=0
5617 \n: .int \y
5618 .endm
5619 m x" || return 1
5620     # .altmacro is only used in arm asm
5621     ! enabled arm || check_as gnu_as ".altmacro"
5622 }
5623
5624 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5625     nogas=:
5626     enabled_any arm aarch64 && nogas=die
5627     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5628     as_noop=-v
5629
5630     case $as_type in
5631         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5632         gcc)  gaspp_as_type=gas ;;
5633         *)    gaspp_as_type=$as_type ;;
5634     esac
5635
5636     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5637
5638     test "${as#*gas-preprocessor.pl}" != "$as" ||
5639     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5640         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5641
5642     if ! check_gas ; then
5643         as=${gas:=$as}
5644         check_gas || \
5645             $nogas "GNU assembler not found, install/update gas-preprocessor"
5646     fi
5647
5648     check_as as_func ".func test
5649                       .endfunc"
5650 fi
5651
5652 check_inline_asm inline_asm_labels '"1:\n"'
5653
5654 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5655
5656 if enabled aarch64; then
5657     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5658     # internal assembler in clang 3.3 does not support this instruction
5659     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5660     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5661
5662     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5663
5664 elif enabled alpha; then
5665
5666     check_cflags -mieee
5667
5668 elif enabled arm; then
5669
5670     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5671     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5672 float func(float a, float b){ return a+b; }
5673 EOF
5674     enabled thumb && check_cflags -mthumb || check_cflags -marm
5675
5676     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5677         :
5678     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5679         :
5680     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5681         case "${cross_prefix:-$cc}" in
5682             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5683             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5684 __asm__ (".eabi_attribute 28, 1");
5685 int main(void) { return 0; }
5686 EOF
5687         esac
5688         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5689     fi
5690
5691     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5692     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5693     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5694     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5695     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5696     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5697     enabled setend  && check_insn setend  'setend be'
5698
5699     [ $target_os = linux ] || [ $target_os = android ] ||
5700         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5701             $ARCH_EXT_LIST_ARM
5702
5703     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5704
5705     check_as as_arch_directive ".arch armv7-a"
5706     check_as as_dn_directive   "ra .dn d0.i16"
5707     check_as as_fpu_directive  ".fpu neon"
5708
5709     # llvm's integrated assembler supports .object_arch from llvm 3.5
5710     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5711         check_as as_object_arch ".object_arch armv4"
5712
5713     # MS armasm fails to assemble our PIC constructs
5714     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5715
5716 elif enabled mips; then
5717
5718     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5719     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5720     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5721
5722     # Enable minimum ISA based on selected options
5723     if enabled mips64; then
5724         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5725         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5726         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5727     else
5728         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5729         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5730         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5731         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5732     fi
5733
5734     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5735     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5736     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5737     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5738     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5739
5740     if enabled bigendian && enabled msa; then
5741         disable msa
5742     fi
5743
5744 elif enabled parisc; then
5745
5746     if enabled gcc; then
5747         case $($cc -dumpversion) in
5748             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5749         esac
5750     fi
5751
5752 elif enabled ppc; then
5753
5754     enable local_aligned
5755
5756     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5757     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5758     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5759     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5760
5761     if enabled altivec; then
5762         check_cflags -maltivec -mabi=altivec
5763
5764         # check if our compiler supports Motorola AltiVec C API
5765         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5766                                     vector signed int v2 = (vector signed int) { 1 };
5767                                     v1 = vec_add(v1, v2);"
5768
5769         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5770     fi
5771
5772     if enabled vsx; then
5773         check_cflags -mvsx &&
5774         check_cc vsx altivec.h "int v[4] = { 0 };
5775                                 vector signed int v1 = vec_vsx_ld(0, v);"
5776     fi
5777
5778     if enabled power8; then
5779         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5780     fi
5781
5782 elif enabled x86; then
5783
5784     check_builtin rdtsc    intrin.h   "__rdtsc()"
5785     check_builtin mm_empty mmintrin.h "_mm_empty()"
5786
5787     enable local_aligned
5788
5789     # check whether EBP is available on x86
5790     # As 'i' is stored on the stack, this program will crash
5791     # if the base pointer is used to access it because the
5792     # base pointer is cleared in the inline assembly code.
5793     check_exec_crash <<EOF && enable ebp_available
5794 volatile int i=0;
5795 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5796 return i;
5797 EOF
5798
5799     # check whether EBX is available on x86
5800     check_inline_asm ebx_available '""::"b"(0)' &&
5801         check_inline_asm ebx_available '"":::"%ebx"'
5802
5803     # check whether xmm clobbers are supported
5804     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5805
5806     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5807         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5808
5809     # check whether binutils is new enough to compile SSSE3/MMXEXT
5810     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5811     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5812
5813     probe_x86asm(){
5814         x86asmexe_probe=$1
5815         if test_cmd $x86asmexe_probe -v; then
5816             x86asmexe=$x86asmexe_probe
5817             x86asm_type=nasm
5818             x86asm_debug="-g -F dwarf"
5819             X86ASMDEP=
5820             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5821         elif test_cmd $x86asmexe_probe --version; then
5822             x86asmexe=$x86asmexe_probe
5823             x86asm_type=yasm
5824             x86asm_debug="-g dwarf2"
5825             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5826             X86ASM_DEPFLAGS=
5827         fi
5828         check_x86asm x86asm "movbe ecx, [5]"
5829     }
5830
5831     if ! disabled_any asm mmx x86asm; then
5832         disable x86asm
5833         for program in $x86asmexe nasm yasm; do
5834             probe_x86asm $program && break
5835         done
5836         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5837         X86ASMFLAGS="-f $objformat"
5838         enabled pic               && append X86ASMFLAGS "-DPIC"
5839         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5840         case "$objformat" in
5841             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5842         esac
5843
5844         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5845         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5846         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5847         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5848         check_x86asm cpunop          "CPU amdnop"
5849     fi
5850
5851     case "$cpu" in
5852         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5853             disable fast_clz
5854         ;;
5855     esac
5856
5857 fi
5858
5859 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5860
5861 check_ldflags -Wl,--as-needed
5862 check_ldflags -Wl,-z,noexecstack
5863
5864 if ! disabled network; then
5865     check_func getaddrinfo $network_extralibs
5866     check_func inet_aton $network_extralibs
5867
5868     check_type netdb.h "struct addrinfo"
5869     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5870     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5871     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5872     check_type poll.h "struct pollfd"
5873     check_type netinet/sctp.h "struct sctp_event_subscribe"
5874     check_struct "sys/socket.h" "struct msghdr" msg_flags
5875     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5876     check_type netinet/in.h "struct sockaddr_in6"
5877     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5878     check_type "sys/types.h sys/socket.h" socklen_t
5879
5880     # Prefer arpa/inet.h over winsock2
5881     if check_headers arpa/inet.h ; then
5882         check_func closesocket
5883     elif check_headers winsock2.h ; then
5884         check_func_headers winsock2.h closesocket -lws2 &&
5885             network_extralibs="-lws2" ||
5886         { check_func_headers winsock2.h closesocket -lws2_32 &&
5887             network_extralibs="-lws2_32"; } || disable winsock2_h network
5888         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5889
5890         check_type ws2tcpip.h socklen_t
5891         check_type ws2tcpip.h "struct addrinfo"
5892         check_type ws2tcpip.h "struct group_source_req"
5893         check_type ws2tcpip.h "struct ip_mreq_source"
5894         check_type ws2tcpip.h "struct ipv6_mreq"
5895         check_type winsock2.h "struct pollfd"
5896         check_struct winsock2.h "struct sockaddr" sa_len
5897         check_type ws2tcpip.h "struct sockaddr_in6"
5898         check_type ws2tcpip.h "struct sockaddr_storage"
5899     else
5900         disable network
5901     fi
5902 fi
5903
5904 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5905 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5906 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5907 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5908 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5909 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5910 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5911
5912 case "$custom_allocator" in
5913     jemalloc)
5914         # jemalloc by default does not use a prefix
5915         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5916     ;;
5917     tcmalloc)
5918         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5919         malloc_prefix=tc_
5920     ;;
5921 esac
5922
5923 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5924 check_func  ${malloc_prefix}memalign            && enable memalign
5925 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5926
5927 check_func  access
5928 check_func_headers stdlib.h arc4random
5929 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5930 check_func  fcntl
5931 check_func  fork
5932 check_func  gethrtime
5933 check_func  getopt
5934 check_func  getrusage
5935 check_func  gettimeofday
5936 check_func  isatty
5937 check_func  mkstemp
5938 check_func  mmap
5939 check_func  mprotect
5940 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5941 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5942 check_func  sched_getaffinity
5943 check_func  setrlimit
5944 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5945 check_func  strerror_r
5946 check_func  sysconf
5947 check_func  sysctl
5948 check_func  usleep
5949
5950 check_func_headers conio.h kbhit
5951 check_func_headers io.h setmode
5952 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5953 check_func_headers mach/mach_time.h mach_absolute_time
5954 check_func_headers stdlib.h getenv
5955 check_func_headers sys/stat.h lstat
5956
5957 check_func_headers windows.h GetProcessAffinityMask
5958 check_func_headers windows.h GetProcessTimes
5959 check_func_headers windows.h GetSystemTimeAsFileTime
5960 check_func_headers windows.h LoadLibrary
5961 check_func_headers windows.h MapViewOfFile
5962 check_func_headers windows.h PeekNamedPipe
5963 check_func_headers windows.h SetConsoleTextAttribute
5964 check_func_headers windows.h SetConsoleCtrlHandler
5965 check_func_headers windows.h Sleep
5966 check_func_headers windows.h VirtualAlloc
5967 check_func_headers glob.h glob
5968 enabled xlib &&
5969     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5970
5971 check_headers direct.h
5972 check_headers dirent.h
5973 check_headers dxgidebug.h
5974 check_headers dxva.h
5975 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5976 check_headers io.h
5977 check_headers linux/perf_event.h
5978 check_headers libcrystalhd/libcrystalhd_if.h
5979 check_headers malloc.h
5980 check_headers net/udplite.h
5981 check_headers poll.h
5982 check_headers sys/param.h
5983 check_headers sys/resource.h
5984 check_headers sys/select.h
5985 check_headers sys/time.h
5986 check_headers sys/un.h
5987 check_headers termios.h
5988 check_headers unistd.h
5989 check_headers valgrind/valgrind.h
5990 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5991 check_headers windows.h
5992 check_headers X11/extensions/XvMClib.h
5993 check_headers asm/types.h
5994
5995 # it seems there are versions of clang in some distros that try to use the
5996 # gcc headers, which explodes for stdatomic
5997 # so we also check that atomics actually work here
5998 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5999
6000 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6001 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6002     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6003 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6004 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6005 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6006
6007 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6008 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6009 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6010
6011 enabled appkit       && check_apple_framework AppKit
6012 enabled audiotoolbox && check_apple_framework AudioToolbox
6013 enabled avfoundation && check_apple_framework AVFoundation
6014 enabled coreimage    && check_apple_framework CoreImage
6015 enabled videotoolbox && check_apple_framework VideoToolbox
6016
6017 check_apple_framework CoreFoundation
6018 check_apple_framework CoreMedia
6019 check_apple_framework CoreVideo
6020
6021 enabled avfoundation && {
6022     disable coregraphics applicationservices
6023     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6024     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6025
6026 enabled videotoolbox && {
6027     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6028     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6029     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6030 }
6031
6032 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6033
6034 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6035 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6036 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6037 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6038 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6039
6040 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6041
6042 if enabled cuda_sdk; then
6043     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6044     enable cuda_nvcc
6045 fi
6046
6047 if ! disabled ffnvcodec; then
6048     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6049     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6050       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6051       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6052       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6053 fi
6054
6055 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6056
6057 if ! disabled w32threads && ! enabled pthreads; then
6058     check_func_headers "windows.h process.h" _beginthreadex &&
6059         check_type "windows.h" CONDITION_VARIABLE &&
6060         check_type "windows.h" INIT_ONCE &&
6061         enable w32threads || disable w32threads
6062     if ! enabled w32threads && enabled winrt; then
6063         check_func_headers "windows.h" CreateThread &&
6064             enable w32threads || disable w32threads
6065     fi
6066 fi
6067
6068 # check for some common methods of building with pthread support
6069 # do this before the optional library checks as some of them require pthreads
6070 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6071     if check_lib pthreads pthread.h pthread_join   -pthread &&
6072        check_lib pthreads pthread.h pthread_create -pthread; then
6073         add_cflags -pthread
6074     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6075          check_lib pthreads pthread.h pthread_create -pthreads; then
6076         add_cflags -pthreads
6077     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6078          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6079         add_cflags -ldl -pthread
6080     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6081          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6082         :
6083     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6084          check_lib pthreads pthread.h pthread_create -lpthread; then
6085         :
6086     elif check_func pthread_join && check_func pthread_create; then
6087         enable pthreads
6088     fi
6089     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6090
6091     if enabled pthreads; then
6092         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6093         check_func pthread_cancel $pthreads_extralibs
6094     fi
6095 fi
6096
6097 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6098                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6099 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6100 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6101
6102 # On some systems dynamic loading requires no extra linker flags
6103 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6104
6105 check_lib libm math.h sin -lm
6106
6107 atan2f_args=2
6108 copysign_args=2
6109 hypot_args=2
6110 ldexpf_args=2
6111 powf_args=2
6112
6113 for func in $MATH_FUNCS; do
6114     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6115 done
6116
6117 for func in $COMPLEX_FUNCS; do
6118     eval check_complexfunc $func \${${func}_args:-1}
6119 done
6120
6121 # these are off by default, so fail if requested and not available
6122 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6123 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6124 enabled decklink          && { require_headers DeckLinkAPI.h &&
6125                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6126 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6127 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6128 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6129 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6130 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6131 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6132 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6133                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6134                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6135 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6136 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6137 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6138 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6139 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6140 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6141                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6142                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6143 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6144 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6145 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6146 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6147 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6148 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6149 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6150                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6151                                  warn "using libfdk without pkg-config"; } }
6152 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"
6153 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6154 enabled fontconfig        && enable libfontconfig
6155 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6156 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6157 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6158 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6159                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6160 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6161                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6162                                done || die "ERROR: libgsm not found"; }
6163 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6164 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6165 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6166 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6167 # While it may appear that require is being used as a pkg-config
6168 # fallback for libmfx, it is actually being used to detect a different
6169 # installation route altogether.  If libmfx is installed via the Intel
6170 # Media SDK or Intel Media Server Studio, these don't come with
6171 # pkg-config support.  Instead, users should make sure that the build
6172 # can find the libraries and headers through other means.
6173 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6174                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6175 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6176 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6177 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6178                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6179 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6180                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6181                                die "ERROR: libnpp not found"; }
6182 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6183 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6184 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6185                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6186                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6187                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6188 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6189 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6190                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6191 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6192 enabled libopus           && {
6193     enabled libopus_decoder && {
6194         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6195     }
6196     enabled libopus_encoder && {
6197         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6198     }
6199 }
6200 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6201 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6202 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6203 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6204 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6205 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6206                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6207 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6208 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6209 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6210 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6211 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6212 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6213 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6214 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6215 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6216 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6217                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6218                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6219 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6220 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6221 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6222 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6223 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6224                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6225
6226 enabled libvpx            && {
6227     enabled libvpx_vp8_decoder && {
6228         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6229             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"
6230     }
6231     enabled libvpx_vp8_encoder && {
6232         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6233             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"
6234     }
6235     enabled libvpx_vp9_decoder && {
6236         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6237             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"
6238     }
6239     enabled libvpx_vp9_encoder && {
6240         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6241             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"
6242     }
6243     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6244         die "libvpx enabled but no supported decoders found"
6245     fi
6246 }
6247
6248 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6249 enabled libwebp           && {
6250     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6251     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6252 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6253                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6254                                  warn "using libx264 without pkg-config"; } } &&
6255                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6256                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6257 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6258                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6259 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6260 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6261 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6262 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6263 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6264 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6265                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6266                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6267 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6268 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6269                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6270                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6271                                die "ERROR: mbedTLS not found"; }
6272 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6273 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6274                                { ! enabled cross_compile &&
6275                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6276                                  add_ldflags -L/opt/vc/lib/ &&
6277                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6278                                die "ERROR: mmal not found" &&
6279                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6280 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6281                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6282                                die "ERROR: openal not found"; } &&
6283                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6284                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6285 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6286                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6287                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6288                                die "ERROR: opencl not found"; } &&
6289                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6290                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6291                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6292 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6293                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6294                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6295                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6296                                die "ERROR: opengl not found."
6297                              }
6298 enabled omx               && require_headers OMX_Core.h
6299 enabled omx_rpi           && { check_headers OMX_Core.h ||
6300                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6301                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6302 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6303                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6304                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6305                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6306                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6307                                die "ERROR: openssl not found"; }
6308 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6309 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6310                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6311                                { enabled libdrm ||
6312                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6313                              }
6314 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6315
6316
6317 if enabled gcrypt; then
6318     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6319     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6320         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6321         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6322         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6323             die "ERROR: gcrypt not found"
6324         add_cflags $gcrypt_cflags
6325     else
6326         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6327     fi
6328 fi
6329
6330 if enabled sdl2; then
6331     SDL2_CONFIG="${cross_prefix}sdl2-config"
6332     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6333     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6334         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6335         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6336         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6337         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6338         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6339             enable sdl2
6340     fi
6341     if test $target_os = "mingw32"; then
6342         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6343     fi
6344 fi
6345
6346 if enabled decklink; then
6347     case $target_os in
6348         mingw32*|mingw64*|win32|win64)
6349             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6350             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6351             ;;
6352     esac
6353 fi
6354
6355 enabled securetransport &&
6356     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6357     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6358         disable securetransport
6359
6360 enabled securetransport &&
6361     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6362
6363 enabled schannel &&
6364     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6365     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6366     schannel_extralibs="-lsecur32" ||
6367         disable schannel
6368
6369 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6370 enabled makeinfo \
6371     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6372     && enable makeinfo_html || disable makeinfo_html
6373 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6374 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6375 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6376 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6377
6378 # check V4L2 codecs available in the API
6379 check_headers linux/fb.h
6380 check_headers linux/videodev2.h
6381 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6382 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6383 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6384 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6385 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6386 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6387 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6388 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6389 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6390 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6391 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6392
6393 check_headers sys/videoio.h
6394 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6395
6396 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6397 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6398 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6399 # w32api 3.12 had it defined wrong
6400 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6401
6402 check_type "dshow.h" IBaseFilter
6403
6404 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6405 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6406     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6407     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6408     check_headers "dev/ic/bt8xx.h"
6409
6410 if check_struct sys/soundcard.h audio_buf_info bytes; then
6411     enable_sanitized sys/soundcard.h
6412 else
6413     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6414     #include <sys/soundcard.h>
6415     audio_buf_info abc;
6416 EOF
6417 fi
6418
6419 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6420     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6421
6422 enabled libjack &&
6423     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6424
6425 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6426
6427 if enabled libcdio; then
6428     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6429     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6430     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6431     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6432     die "ERROR: No usable libcdio/cdparanoia found"
6433 fi
6434
6435 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6436     disable libxcb_shm libxcb_shape libxcb_xfixes
6437
6438 if enabled libxcb; then
6439     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6440     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6441     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6442 fi
6443
6444 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6445
6446 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6447 # the desktop api partition
6448 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6449 #ifdef WINAPI_FAMILY
6450 #include <winapifamily.h>
6451 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6452 #error desktop, not uwp
6453 #else
6454 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6455 #endif
6456 #else
6457 #error no family set
6458 #endif
6459 EOF
6460
6461 enabled vaapi &&
6462     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6463
6464 if enabled vaapi; then
6465     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6466
6467     if enabled xlib; then
6468         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6469     fi
6470
6471     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6472
6473     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6474     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6475     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6476     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6477     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6478     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6479     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6480 fi
6481
6482 if enabled_all opencl libdrm ; then
6483     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6484         enable opencl_drm_beignet
6485     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6486         enable opencl_drm_arm
6487 fi
6488
6489 if enabled_all opencl vaapi ; then
6490     if enabled opencl_drm_beignet ; then
6491         enable opencl_vaapi_beignet
6492     else
6493         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6494             enable opencl_vaapi_intel_media
6495     fi
6496 fi
6497
6498 if enabled_all opencl dxva2 ; then
6499     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6500         enable opencl_dxva2
6501 fi
6502
6503 if enabled_all opencl d3d11va ; then
6504     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6505         enable opencl_d3d11
6506 fi
6507
6508 enabled vdpau &&
6509     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6510
6511 enabled vdpau &&
6512     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6513
6514 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6515
6516 if enabled x86; then
6517     case $target_os in
6518         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6519             ;;
6520         *)
6521             disable ffnvcodec cuvid nvdec nvenc
6522             ;;
6523     esac
6524 elif enabled ppc64 && ! enabled bigendian; then
6525     case $target_os in
6526         linux)
6527             ;;
6528         *)
6529             disable ffnvcodec cuvid nvdec nvenc
6530             ;;
6531     esac
6532 else
6533     disable ffnvcodec cuvid nvdec nvenc
6534 fi
6535
6536 enabled ffnvcodec && enable cuda
6537
6538 enabled nvenc &&
6539     test_cc -I$source_path <<EOF || disable nvenc
6540 #include <ffnvcodec/nvEncodeAPI.h>
6541 NV_ENCODE_API_FUNCTION_LIST flist;
6542 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6543 int main(void) { return 0; }
6544 EOF
6545
6546 enabled amf &&
6547     check_cpp_condition amf "AMF/core/Version.h" \
6548         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6549
6550 # Funny iconv installations are not unusual, so check it after all flags have been set
6551 if enabled libc_iconv; then
6552     check_func_headers iconv.h iconv
6553 elif enabled iconv; then
6554     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6555 fi
6556
6557 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6558
6559 # add some useful compiler flags if supported
6560 check_cflags -Wdeclaration-after-statement
6561 check_cflags -Wall
6562 check_cflags -Wdisabled-optimization
6563 check_cflags -Wpointer-arith
6564 check_cflags -Wredundant-decls
6565 check_cflags -Wwrite-strings
6566 check_cflags -Wtype-limits
6567 check_cflags -Wundef
6568 check_cflags -Wmissing-prototypes
6569 check_cflags -Wno-pointer-to-int-cast
6570 check_cflags -Wstrict-prototypes
6571 check_cflags -Wempty-body
6572
6573 if enabled extra_warnings; then
6574     check_cflags -Wcast-qual
6575     check_cflags -Wextra
6576     check_cflags -Wpedantic
6577 fi
6578
6579 check_disable_warning(){
6580     warning_flag=-W${1#-Wno-}
6581     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6582 }
6583
6584 test_cflags -Werror=unused-command-line-argument &&
6585     append unknown_warning_flags "-Werror=unused-command-line-argument"
6586 test_cflags -Werror=unknown-warning-option &&
6587     append unknown_warning_flags "-Werror=unknown-warning-option"
6588
6589 check_disable_warning -Wno-parentheses
6590 check_disable_warning -Wno-switch
6591 check_disable_warning -Wno-format-zero-length
6592 check_disable_warning -Wno-pointer-sign
6593 check_disable_warning -Wno-unused-const-variable
6594 check_disable_warning -Wno-bool-operation
6595 check_disable_warning -Wno-char-subscripts
6596
6597 check_disable_warning_headers(){
6598     warning_flag=-W${1#-Wno-}
6599     test_cflags $warning_flag && add_cflags_headers $1
6600 }
6601
6602 check_disable_warning_headers -Wno-deprecated-declarations
6603 check_disable_warning_headers -Wno-unused-variable
6604
6605 test_cc <<EOF && enable blocks_extension
6606 void (^block)(void);
6607 EOF
6608
6609 # add some linker flags
6610 check_ldflags -Wl,--warn-common
6611 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6612 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6613 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6614
6615 # add some strip flags
6616 check_stripflags -x
6617
6618 enabled neon_clobber_test &&
6619     check_ldflags -Wl,--wrap,avcodec_open2              \
6620                   -Wl,--wrap,avcodec_decode_audio4      \
6621                   -Wl,--wrap,avcodec_decode_video2      \
6622                   -Wl,--wrap,avcodec_decode_subtitle2   \
6623                   -Wl,--wrap,avcodec_encode_audio2      \
6624                   -Wl,--wrap,avcodec_encode_video2      \
6625                   -Wl,--wrap,avcodec_encode_subtitle    \
6626                   -Wl,--wrap,avcodec_send_packet        \
6627                   -Wl,--wrap,avcodec_receive_packet     \
6628                   -Wl,--wrap,avcodec_send_frame         \
6629                   -Wl,--wrap,avcodec_receive_frame      \
6630                   -Wl,--wrap,swr_convert                \
6631                   -Wl,--wrap,avresample_convert ||
6632     disable neon_clobber_test
6633
6634 enabled xmm_clobber_test &&
6635     check_ldflags -Wl,--wrap,avcodec_open2              \
6636                   -Wl,--wrap,avcodec_decode_audio4      \
6637                   -Wl,--wrap,avcodec_decode_video2      \
6638                   -Wl,--wrap,avcodec_decode_subtitle2   \
6639                   -Wl,--wrap,avcodec_encode_audio2      \
6640                   -Wl,--wrap,avcodec_encode_video2      \
6641                   -Wl,--wrap,avcodec_encode_subtitle    \
6642                   -Wl,--wrap,avcodec_send_packet        \
6643                   -Wl,--wrap,avcodec_receive_packet     \
6644                   -Wl,--wrap,avcodec_send_frame         \
6645                   -Wl,--wrap,avcodec_receive_frame      \
6646                   -Wl,--wrap,swr_convert                \
6647                   -Wl,--wrap,avresample_convert         \
6648                   -Wl,--wrap,sws_scale ||
6649     disable xmm_clobber_test
6650
6651 check_ld "cc" proper_dce <<EOF
6652 extern const int array[512];
6653 static inline int func(void) { return array[0]; }
6654 int main(void) { return 0; }
6655 EOF
6656
6657 if enabled proper_dce; then
6658     echo "X { local: *; };" > $TMPV
6659     if test_ldflags -Wl,${version_script},$TMPV; then
6660         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6661         quotes='""'
6662         test_cc <<EOF && enable symver_asm_label
6663 void ff_foo(void) __asm__ ("av_foo@VERSION");
6664 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6665 EOF
6666         test_cc <<EOF && enable symver_gnu_asm
6667 __asm__(".symver ff_foo,av_foo@VERSION");
6668 void ff_foo(void) {}
6669 EOF
6670     fi
6671 fi
6672
6673 if [ -z "$optflags" ]; then
6674     if enabled small; then
6675         optflags=$cflags_size
6676     elif enabled optimizations; then
6677         optflags=$cflags_speed
6678     else
6679         optflags=$cflags_noopt
6680     fi
6681 fi
6682
6683 if [ -z "$nvccflags" ]; then
6684     nvccflags=$nvccflags_default
6685 fi
6686
6687 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6688     nvccflags="$nvccflags -m64"
6689 else
6690     nvccflags="$nvccflags -m32"
6691 fi
6692
6693 check_optflags(){
6694     check_cflags "$@"
6695     enabled lto && check_ldflags "$@"
6696 }
6697
6698 check_optflags $optflags
6699 check_optflags -fno-math-errno
6700 check_optflags -fno-signed-zeros
6701
6702 if enabled lto; then
6703     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6704     check_cflags  -flto
6705     check_ldflags -flto $cpuflags
6706     disable inline_asm_direct_symbol_refs
6707 fi
6708
6709 enabled ftrapv && check_cflags -ftrapv
6710
6711 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6712 int x;
6713 EOF
6714
6715
6716 if enabled icc; then
6717     # Just warnings, no remarks
6718     check_cflags -w1
6719     # -wd: Disable following warnings
6720     # 144, 167, 556: -Wno-pointer-sign
6721     # 188: enumerated type mixed with another type
6722     # 1292: attribute "foo" ignored
6723     # 1419: external declaration in primary source file
6724     # 10006: ignoring unknown option -fno-signed-zeros
6725     # 10148: ignoring unknown option -Wno-parentheses
6726     # 10156: ignoring option '-W'; no argument required
6727     # 13200: No EMMS instruction before call to function
6728     # 13203: No EMMS instruction before return from function
6729     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6730     # 11030: Warning unknown option --as-needed
6731     # 10156: ignoring option '-export'; no argument required
6732     check_ldflags -wd10156,11030
6733     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6734     enable ebp_available
6735     # The test above does not test linking
6736     enabled lto && disable symver_asm_label
6737     if enabled x86_32; then
6738         icc_version=$($cc -dumpversion)
6739         test ${icc_version%%.*} -ge 11 &&
6740             check_cflags -falign-stack=maintain-16-byte ||
6741             disable aligned_stack
6742     fi
6743 elif enabled gcc; then
6744     check_optflags -fno-tree-vectorize
6745     check_cflags -Werror=format-security
6746     check_cflags -Werror=implicit-function-declaration
6747     check_cflags -Werror=missing-prototypes
6748     check_cflags -Werror=return-type
6749     check_cflags -Werror=vla
6750     check_cflags -Wformat
6751     check_cflags -fdiagnostics-color=auto
6752     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6753     if enabled x86_32; then
6754         case $target_os in
6755         *bsd*)
6756             # BSDs don't guarantee a 16 byte aligned stack, but we can
6757             # request GCC to try to maintain 16 byte alignment throughout
6758             # function calls. Library entry points that might call assembly
6759             # functions align the stack. (The parameter means 2^4 bytes.)
6760             check_cflags -mpreferred-stack-boundary=4
6761             ;;
6762         esac
6763     fi
6764 elif enabled llvm_gcc; then
6765     check_cflags -mllvm -stack-alignment=16
6766 elif enabled clang; then
6767     if enabled x86_32; then
6768         # Clang doesn't support maintaining alignment without assuming the
6769         # same alignment in every function. If 16 byte alignment would be
6770         # enabled, one would also have to either add attribute_align_arg on
6771         # every single entry point into the libraries or enable -mstackrealign
6772         # (doing stack realignment in every single function).
6773         case $target_os in
6774         mingw32|win32|*bsd*)
6775             disable aligned_stack
6776             ;;
6777         *)
6778             check_cflags -mllvm -stack-alignment=16
6779             check_cflags -mstack-alignment=16
6780             ;;
6781         esac
6782     else
6783         check_cflags -mllvm -stack-alignment=16
6784         check_cflags -mstack-alignment=16
6785     fi
6786     check_cflags -Qunused-arguments
6787     check_cflags -Werror=implicit-function-declaration
6788     check_cflags -Werror=missing-prototypes
6789     check_cflags -Werror=return-type
6790 elif enabled cparser; then
6791     add_cflags -Wno-missing-variable-declarations
6792     add_cflags -Wno-empty-statement
6793 elif enabled armcc; then
6794     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6795     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6796     # 2523: use of inline assembly is deprecated
6797     add_cflags -W${armcc_opt},--diag_suppress=2523
6798     add_cflags -W${armcc_opt},--diag_suppress=1207
6799     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6800     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6801     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6802     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6803 elif enabled pathscale; then
6804     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6805     disable inline_asm
6806 elif enabled_any msvc icl; then
6807     enabled x86_32 && disable aligned_stack
6808     enabled_all x86_32 debug && add_cflags -Oy-
6809     enabled debug && add_ldflags -debug
6810     enable pragma_deprecated
6811     if enabled icl; then
6812         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6813         # (correctly) on icl 13.x.
6814         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6815             add_cflags -Qansi-alias
6816         # Some inline asm is not compilable in debug
6817         if enabled debug; then
6818             disable ebp_available
6819             disable ebx_available
6820         fi
6821     fi
6822     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6823     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6824     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6825     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6826     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6827     # MSVC 2013 and newer can handle it fine.
6828     # If this declspec fails, force including stdlib.h before the restrict redefinition
6829     # happens in config.h.
6830     if [ $restrict_keyword != restrict ]; then
6831         test_cc <<EOF || add_cflags -FIstdlib.h
6832 __declspec($restrict_keyword) void *foo(int);
6833 EOF
6834     fi
6835     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6836     # Issue has been fixed in MSVC v19.00.24218.
6837     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6838         check_cflags -d2SSAOptimizer-
6839     # enable utf-8 source processing on VS2015 U2 and newer
6840     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6841         add_cflags -utf-8
6842 fi
6843
6844 for pfx in "" host_; do
6845     varname=${pfx%_}cc_type
6846     eval "type=\$$varname"
6847     if [ "$type" = "msvc" ]; then
6848         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6849 static inline int foo(int a) { return a; }
6850 EOF
6851     fi
6852 done
6853
6854 case $as_type in
6855     clang)
6856         add_asflags -Qunused-arguments
6857     ;;
6858 esac
6859
6860 case $ld_type in
6861     clang)
6862         check_ldflags -Qunused-arguments
6863     ;;
6864 esac
6865
6866 enable frame_thread_encoder
6867
6868 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6869
6870 check_deps $CONFIG_LIST       \
6871            $CONFIG_EXTRA      \
6872            $HAVE_LIST         \
6873            $ALL_COMPONENTS    \
6874
6875 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"
6876 enabled avresample && warn "Building with deprecated library libavresample"
6877
6878 case $target_os in
6879 haiku)
6880     disable memalign
6881     disable posix_memalign
6882     ;;
6883 *-dos|freedos|opendos)
6884     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6885         disable memalign
6886     fi
6887     ;;
6888 esac
6889
6890 flatten_extralibs(){
6891     nested_entries=
6892     list_name=$1
6893     eval list=\$${1}
6894     for entry in $list; do
6895         entry_copy=$entry
6896         resolve entry_copy
6897         flat_entries=
6898         for e in $entry_copy; do
6899             case $e in
6900                 *_extralibs) nested_entries="$nested_entries$e ";;
6901                           *) flat_entries="$flat_entries$e ";;
6902             esac
6903         done
6904         eval $entry="\$flat_entries"
6905     done
6906     append $list_name "$nested_entries"
6907
6908     resolve nested_entries
6909     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6910         flatten_extralibs $list_name
6911     fi
6912 }
6913
6914 flatten_extralibs_wrapper(){
6915     list_name=$1
6916     flatten_extralibs $list_name
6917     unique $list_name
6918     resolve $list_name
6919     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6920     eval printf \''%s'\' \""\$$list_name"\"
6921 }
6922
6923 for linkunit in $LIBRARY_LIST; do
6924     unset current_extralibs
6925     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6926     for comp in ${components}; do
6927         enabled $comp || continue
6928         comp_extralibs="${comp}_extralibs"
6929         append current_extralibs $comp_extralibs
6930     done
6931     eval prepend ${linkunit}_extralibs $current_extralibs
6932 done
6933
6934 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6935     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6936 done
6937
6938 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6939
6940 for thread in $THREADS_LIST; do
6941     if enabled $thread; then
6942         test -n "$thread_type" &&
6943             die "ERROR: Only one thread type must be selected." ||
6944             thread_type="$thread"
6945     fi
6946 done
6947
6948 if disabled stdatomic; then
6949     if enabled atomics_gcc; then
6950         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6951     elif enabled atomics_win32; then
6952         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6953     elif enabled atomics_suncc; then
6954         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6955     elif enabled pthreads; then
6956         add_compat atomics/pthread/stdatomic.o
6957         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6958     else
6959         enabled threads && die "Threading is enabled, but no atomics are available"
6960         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6961     fi
6962 fi
6963
6964 # Check if requested libraries were found.
6965 for lib in $AUTODETECT_LIBS; do
6966     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6967 done
6968
6969 enabled zlib && add_cppflags -DZLIB_CONST
6970
6971 # conditional library dependencies, in any order
6972 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6973 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6974 enabled afir_filter         && prepend avfilter_deps "avcodec"
6975 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6976 enabled aresample_filter    && prepend avfilter_deps "swresample"
6977 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6978 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6979 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6980 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6981 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6982 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6983 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6984 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6985 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6986 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6987 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6988 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6989 enabled pan_filter          && prepend avfilter_deps "swresample"
6990 enabled pp_filter           && prepend avfilter_deps "postproc"
6991 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6992 enabled resample_filter && prepend avfilter_deps "avresample"
6993 enabled sab_filter          && prepend avfilter_deps "swscale"
6994 enabled scale_filter    && prepend avfilter_deps "swscale"
6995 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6996 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6997 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6998 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6999 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7000 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7001 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7002 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7003 enabled spp_filter          && prepend avfilter_deps "avcodec"
7004 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7005 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7006 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7007 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7008
7009 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7010
7011 #FIXME
7012 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7013     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7014
7015 enabled opus_decoder    && prepend avcodec_deps "swresample"
7016
7017 # reorder the items at var $1 to align with the items order at var $2 .
7018 # die if an item at $1 is not at $2 .
7019 reorder_by(){
7020     eval rb_in=\$$1
7021     eval rb_ordered=\$$2
7022
7023     for rb in $rb_in; do
7024         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7025     done
7026
7027     rb_out=
7028     for rb in $rb_ordered; do
7029         is_in $rb $rb_in && rb_out="$rb_out$rb "
7030     done
7031     eval $1=\$rb_out
7032 }
7033
7034 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7035 # within a set of N items, N expansions are enough to expose a cycle.
7036 expand_deps(){
7037     unique ${1}_deps  # required for the early break test.
7038     for dummy in $LIBRARY_LIST; do  # N iteratios
7039         eval deps=\$${1}_deps
7040         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7041         unique ${1}_deps
7042         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7043     done
7044
7045     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7046     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7047 }
7048
7049 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7050 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7051
7052 map 'expand_deps $v' $LIBRARY_LIST
7053
7054 if test "$quiet" != "yes"; then
7055
7056 echo "install prefix            $prefix"
7057 echo "source path               $source_path"
7058 echo "C compiler                $cc"
7059 echo "C library                 $libc_type"
7060 if test "$host_cc" != "$cc"; then
7061     echo "host C compiler           $host_cc"
7062     echo "host C library            $host_libc_type"
7063 fi
7064 echo "ARCH                      $arch ($cpu)"
7065 if test "$build_suffix" != ""; then
7066     echo "build suffix              $build_suffix"
7067 fi
7068 if test "$progs_suffix" != ""; then
7069     echo "progs suffix              $progs_suffix"
7070 fi
7071 if test "$extra_version" != ""; then
7072     echo "version string suffix     $extra_version"
7073 fi
7074 echo "big-endian                ${bigendian-no}"
7075 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7076 if enabled x86; then
7077     echo "standalone assembly       ${x86asm-no}"
7078     echo "x86 assembler             ${x86asmexe}"
7079     echo "MMX enabled               ${mmx-no}"
7080     echo "MMXEXT enabled            ${mmxext-no}"
7081     echo "3DNow! enabled            ${amd3dnow-no}"
7082     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7083     echo "SSE enabled               ${sse-no}"
7084     echo "SSSE3 enabled             ${ssse3-no}"
7085     echo "AESNI enabled             ${aesni-no}"
7086     echo "AVX enabled               ${avx-no}"
7087     echo "AVX2 enabled              ${avx2-no}"
7088     echo "AVX-512 enabled           ${avx512-no}"
7089     echo "XOP enabled               ${xop-no}"
7090     echo "FMA3 enabled              ${fma3-no}"
7091     echo "FMA4 enabled              ${fma4-no}"
7092     echo "i686 features enabled     ${i686-no}"
7093     echo "CMOV is fast              ${fast_cmov-no}"
7094     echo "EBX available             ${ebx_available-no}"
7095     echo "EBP available             ${ebp_available-no}"
7096 fi
7097 if enabled aarch64; then
7098     echo "NEON enabled              ${neon-no}"
7099     echo "VFP enabled               ${vfp-no}"
7100 fi
7101 if enabled arm; then
7102     echo "ARMv5TE enabled           ${armv5te-no}"
7103     echo "ARMv6 enabled             ${armv6-no}"
7104     echo "ARMv6T2 enabled           ${armv6t2-no}"
7105     echo "VFP enabled               ${vfp-no}"
7106     echo "NEON enabled              ${neon-no}"
7107     echo "THUMB enabled             ${thumb-no}"
7108 fi
7109 if enabled mips; then
7110     echo "MIPS FPU enabled          ${mipsfpu-no}"
7111     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7112     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7113     echo "MIPS MSA enabled          ${msa-no}"
7114     echo "LOONGSON MMI enabled      ${mmi-no}"
7115 fi
7116 if enabled ppc; then
7117     echo "AltiVec enabled           ${altivec-no}"
7118     echo "VSX enabled               ${vsx-no}"
7119     echo "POWER8 enabled            ${power8-no}"
7120     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7121     echo "dcbzl available           ${dcbzl-no}"
7122 fi
7123 echo "debug symbols             ${debug-no}"
7124 echo "strip symbols             ${stripping-no}"
7125 echo "optimize for size         ${small-no}"
7126 echo "optimizations             ${optimizations-no}"
7127 echo "static                    ${static-no}"
7128 echo "shared                    ${shared-no}"
7129 echo "postprocessing support    ${postproc-no}"
7130 echo "network support           ${network-no}"
7131 echo "threading support         ${thread_type-no}"
7132 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7133 echo "texi2html enabled         ${texi2html-no}"
7134 echo "perl enabled              ${perl-no}"
7135 echo "pod2man enabled           ${pod2man-no}"
7136 echo "makeinfo enabled          ${makeinfo-no}"
7137 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7138 test -n "$random_seed" &&
7139     echo "random seed               ${random_seed}"
7140 echo
7141
7142 echo "External libraries:"
7143 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7144 echo
7145
7146 echo "External libraries providing hardware acceleration:"
7147 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7148 echo
7149
7150 echo "Libraries:"
7151 print_enabled '' $LIBRARY_LIST | print_in_columns
7152 echo
7153
7154 echo "Programs:"
7155 print_enabled '' $PROGRAM_LIST | print_in_columns
7156 echo
7157
7158 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7159     echo "Enabled ${type}s:"
7160     eval list=\$$(toupper $type)_LIST
7161     print_enabled '_*' $list | print_in_columns
7162     echo
7163 done
7164
7165 if test -n "$ignore_tests"; then
7166     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7167     echo "Ignored FATE tests:"
7168     echo $ignore_tests | print_in_columns
7169     echo
7170 fi
7171
7172 echo "License: $license"
7173
7174 fi # test "$quiet" != "yes"
7175
7176 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7177     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7178         if disabled $cfg; then
7179             varname=${cfg}_disable_reason
7180             eval "warn \"Disabled $cfg because \$$varname\""
7181         fi
7182     done
7183 fi
7184
7185 if test -n "$WARNINGS"; then
7186     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7187     enabled fatal_warnings && exit 1
7188 fi
7189
7190 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7191
7192 esc(){
7193     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7194 }
7195
7196 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7197
7198 enabled stripping || strip="echo skipping strip"
7199 enabled stripping || striptype=""
7200
7201 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7202
7203 cat > ffbuild/config.mak <<EOF
7204 # Automatically generated by configure - do not modify!
7205 ifndef FFMPEG_CONFIG_MAK
7206 FFMPEG_CONFIG_MAK=1
7207 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7208 prefix=$prefix
7209 LIBDIR=\$(DESTDIR)$libdir
7210 SHLIBDIR=\$(DESTDIR)$shlibdir
7211 INCDIR=\$(DESTDIR)$incdir
7212 BINDIR=\$(DESTDIR)$bindir
7213 DATADIR=\$(DESTDIR)$datadir
7214 DOCDIR=\$(DESTDIR)$docdir
7215 MANDIR=\$(DESTDIR)$mandir
7216 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7217 INSTALL_NAME_DIR=$install_name_dir
7218 SRC_PATH=$source_path
7219 SRC_LINK=$source_link
7220 ifndef MAIN_MAKEFILE
7221 SRC_PATH:=\$(SRC_PATH:.%=..%)
7222 endif
7223 CC_IDENT=$cc_ident
7224 ARCH=$arch
7225 INTRINSICS=$intrinsics
7226 EXTERN_PREFIX=$extern_prefix
7227 CC=$cc
7228 CXX=$cxx
7229 AS=$as
7230 OBJCC=$objcc
7231 LD=$ld
7232 DEPCC=$dep_cc
7233 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7234 DEPAS=$as
7235 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7236 X86ASM=$x86asmexe
7237 DEPX86ASM=$x86asmexe
7238 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7239 AR=$ar
7240 ARFLAGS=$arflags
7241 AR_O=$ar_o
7242 AR_CMD=$ar
7243 NM_CMD=$nm
7244 RANLIB=$ranlib
7245 STRIP=$strip
7246 STRIPTYPE=$striptype
7247 NVCC=$nvcc
7248 CP=cp -p
7249 LN_S=$ln_s
7250 CPPFLAGS=$CPPFLAGS
7251 CFLAGS=$CFLAGS
7252 CXXFLAGS=$CXXFLAGS
7253 OBJCFLAGS=$OBJCFLAGS
7254 ASFLAGS=$ASFLAGS
7255 NVCCFLAGS=$nvccflags
7256 AS_C=$AS_C
7257 AS_O=$AS_O
7258 OBJCC_C=$OBJCC_C
7259 OBJCC_E=$OBJCC_E
7260 OBJCC_O=$OBJCC_O
7261 CC_C=$CC_C
7262 CC_E=$CC_E
7263 CC_O=$CC_O
7264 CXX_C=$CXX_C
7265 CXX_O=$CXX_O
7266 NVCC_C=$NVCC_C
7267 NVCC_O=$NVCC_O
7268 LD_O=$LD_O
7269 X86ASM_O=$X86ASM_O
7270 LD_LIB=$LD_LIB
7271 LD_PATH=$LD_PATH
7272 DLLTOOL=$dlltool
7273 WINDRES=$windres
7274 DEPWINDRES=$dep_cc
7275 DOXYGEN=$doxygen
7276 LDFLAGS=$LDFLAGS
7277 LDEXEFLAGS=$LDEXEFLAGS
7278 LDSOFLAGS=$LDSOFLAGS
7279 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7280 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7281 X86ASMFLAGS=$X86ASMFLAGS
7282 BUILDSUF=$build_suffix
7283 PROGSSUF=$progs_suffix
7284 FULLNAME=$FULLNAME
7285 LIBPREF=$LIBPREF
7286 LIBSUF=$LIBSUF
7287 LIBNAME=$LIBNAME
7288 SLIBPREF=$SLIBPREF
7289 SLIBSUF=$SLIBSUF
7290 EXESUF=$EXESUF
7291 EXTRA_VERSION=$extra_version
7292 CCDEP=$CCDEP
7293 CXXDEP=$CXXDEP
7294 CCDEP_FLAGS=$CCDEP_FLAGS
7295 ASDEP=$ASDEP
7296 ASDEP_FLAGS=$ASDEP_FLAGS
7297 X86ASMDEP=$X86ASMDEP
7298 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7299 CC_DEPFLAGS=$CC_DEPFLAGS
7300 AS_DEPFLAGS=$AS_DEPFLAGS
7301 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7302 HOSTCC=$host_cc
7303 HOSTLD=$host_ld
7304 HOSTCFLAGS=$host_cflags
7305 HOSTCPPFLAGS=$host_cppflags
7306 HOSTEXESUF=$HOSTEXESUF
7307 HOSTLDFLAGS=$host_ldflags
7308 HOSTEXTRALIBS=$host_extralibs
7309 DEPHOSTCC=$host_cc
7310 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7311 HOSTCCDEP=$HOSTCCDEP
7312 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7313 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7314 HOSTCC_C=$HOSTCC_C
7315 HOSTCC_O=$HOSTCC_O
7316 HOSTLD_O=$HOSTLD_O
7317 TARGET_EXEC=$target_exec $target_exec_args
7318 TARGET_PATH=$target_path
7319 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7320 CFLAGS-ffplay=${sdl2_cflags}
7321 CFLAGS_HEADERS=$CFLAGS_HEADERS
7322 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7323 EXTRALIBS=$extralibs
7324 COMPAT_OBJS=$compat_objs
7325 INSTALL=$install
7326 LIBTARGET=${LIBTARGET}
7327 SLIBNAME=${SLIBNAME}
7328 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7329 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7330 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7331 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7332 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7333 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7334 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7335 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7336 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7337 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7338 NOREDZONE_FLAGS=$noredzone_flags
7339 LIBFUZZER_PATH=$libfuzzer_path
7340 IGNORE_TESTS=$ignore_tests
7341 EOF
7342
7343 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7344
7345 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7346     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7347 done
7348
7349 cat > $TMPH <<EOF
7350 /* Automatically generated by configure - do not modify! */
7351 #ifndef FFMPEG_CONFIG_H
7352 #define FFMPEG_CONFIG_H
7353 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7354 #define FFMPEG_LICENSE "$(c_escape $license)"
7355 #define CONFIG_THIS_YEAR 2019
7356 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7357 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7358 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7359 #define av_restrict $restrict_keyword
7360 #define EXTERN_PREFIX "${extern_prefix}"
7361 #define EXTERN_ASM ${extern_prefix}
7362 #define BUILDSUF "$build_suffix"
7363 #define SLIBSUF "$SLIBSUF"
7364 #define HAVE_MMX2 HAVE_MMXEXT
7365 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7366 EOF
7367
7368 test -n "$assert_level" &&
7369     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7370
7371 test -n "$malloc_prefix" &&
7372     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7373
7374 if enabled x86asm; then
7375     append config_files $TMPASM
7376     cat > $TMPASM <<EOF
7377 ; Automatically generated by configure - do not modify!
7378 EOF
7379 fi
7380
7381 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7382
7383
7384 mkdir -p doc
7385 mkdir -p tests
7386 mkdir -p tests/api
7387 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7388
7389 print_config ARCH_   "$config_files" $ARCH_LIST
7390 print_config HAVE_   "$config_files" $HAVE_LIST
7391 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7392                                      $CONFIG_EXTRA      \
7393                                      $ALL_COMPONENTS    \
7394
7395 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7396 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7397
7398 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7399 cp_if_changed $TMPH config.h
7400 touch ffbuild/.config
7401
7402 enabled x86asm && cp_if_changed $TMPASM config.asm
7403
7404 cat > $TMPH <<EOF
7405 /* Generated by ffmpeg configure */
7406 #ifndef AVUTIL_AVCONFIG_H
7407 #define AVUTIL_AVCONFIG_H
7408 EOF
7409
7410 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7411
7412 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7413
7414 cp_if_changed $TMPH libavutil/avconfig.h
7415
7416 # full_filter_name_foo=vf_foo
7417 # full_filter_name_bar=asrc_bar
7418 # ...
7419 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7420
7421 # generate the lists of enabled components
7422 print_enabled_components(){
7423     file=$1
7424     struct_name=$2
7425     name=$3
7426     shift 3
7427     echo "static const $struct_name * const $name[] = {" > $TMPH
7428     for c in $*; do
7429         if enabled $c; then
7430             case $name in
7431                 filter_list)
7432                     eval c=\$full_filter_name_${c%_filter}
7433                 ;;
7434                 indev_list)
7435                     c=${c%_indev}_demuxer
7436                 ;;
7437                 outdev_list)
7438                     c=${c%_outdev}_muxer
7439                 ;;
7440             esac
7441             printf "    &ff_%s,\n" $c >> $TMPH
7442         fi
7443     done
7444     if [ "$name" = "filter_list" ]; then
7445         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7446             printf "    &ff_%s,\n" $c >> $TMPH
7447         done
7448     fi
7449     echo "    NULL };" >> $TMPH
7450     cp_if_changed $TMPH $file
7451 }
7452
7453 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7454 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7455 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7456 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7457 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7458 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7459 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7460 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7461 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7462
7463 # Settings for pkg-config files
7464
7465 cat > $TMPH <<EOF
7466 # Automatically generated by configure - do not modify!
7467 shared=$shared
7468 build_suffix=$build_suffix
7469 prefix=$prefix
7470 libdir=$libdir
7471 incdir=$incdir
7472 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7473 source_path=${source_path}
7474 LIBPREF=${LIBPREF}
7475 LIBSUF=${LIBSUF}
7476 extralibs_avutil="$avutil_extralibs"
7477 extralibs_avcodec="$avcodec_extralibs"
7478 extralibs_avformat="$avformat_extralibs"
7479 extralibs_avdevice="$avdevice_extralibs"
7480 extralibs_avfilter="$avfilter_extralibs"
7481 extralibs_avresample="$avresample_extralibs"
7482 extralibs_postproc="$postproc_extralibs"
7483 extralibs_swscale="$swscale_extralibs"
7484 extralibs_swresample="$swresample_extralibs"
7485 EOF
7486
7487 for lib in $LIBRARY_LIST; do
7488     lib_deps="$(eval echo \$${lib}_deps)"
7489     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7490 done
7491
7492 cp_if_changed $TMPH ffbuild/config.sh