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 vp4_decoder_select="vp3_decoder"
2829 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2830 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2831 vp6a_decoder_select="vp6_decoder"
2832 vp6f_decoder_select="vp6_decoder"
2833 vp7_decoder_select="h264pred videodsp vp8dsp"
2834 vp8_decoder_select="h264pred videodsp vp8dsp"
2835 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2836 wcmv_decoder_deps="zlib"
2837 webp_decoder_select="vp8_decoder exif"
2838 wmalossless_decoder_select="llauddsp"
2839 wmapro_decoder_select="mdct sinewin wma_freqs"
2840 wmav1_decoder_select="mdct sinewin wma_freqs"
2841 wmav1_encoder_select="mdct sinewin wma_freqs"
2842 wmav2_decoder_select="mdct sinewin wma_freqs"
2843 wmav2_encoder_select="mdct sinewin wma_freqs"
2844 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2845 wmv1_decoder_select="h263_decoder"
2846 wmv1_encoder_select="h263_encoder"
2847 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2848 wmv2_encoder_select="h263_encoder wmv2dsp"
2849 wmv3_decoder_select="vc1_decoder"
2850 wmv3image_decoder_select="wmv3_decoder"
2851 xma1_decoder_select="wmapro_decoder"
2852 xma2_decoder_select="wmapro_decoder"
2853 zerocodec_decoder_deps="zlib"
2854 zlib_decoder_deps="zlib"
2855 zlib_encoder_deps="zlib"
2856 zmbv_decoder_deps="zlib"
2857 zmbv_encoder_deps="zlib"
2858
2859 # hardware accelerators
2860 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2861 cuda_deps="ffnvcodec"
2862 cuvid_deps="ffnvcodec"
2863 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2864 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2865 ffnvcodec_deps_any="libdl LoadLibrary"
2866 nvdec_deps="ffnvcodec"
2867 vaapi_x11_deps="xlib"
2868 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2869 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2870 xvmc_deps="X11_extensions_XvMClib_h"
2871
2872 h263_vaapi_hwaccel_deps="vaapi"
2873 h263_vaapi_hwaccel_select="h263_decoder"
2874 h263_videotoolbox_hwaccel_deps="videotoolbox"
2875 h263_videotoolbox_hwaccel_select="h263_decoder"
2876 h264_d3d11va_hwaccel_deps="d3d11va"
2877 h264_d3d11va_hwaccel_select="h264_decoder"
2878 h264_d3d11va2_hwaccel_deps="d3d11va"
2879 h264_d3d11va2_hwaccel_select="h264_decoder"
2880 h264_dxva2_hwaccel_deps="dxva2"
2881 h264_dxva2_hwaccel_select="h264_decoder"
2882 h264_nvdec_hwaccel_deps="nvdec"
2883 h264_nvdec_hwaccel_select="h264_decoder"
2884 h264_vaapi_hwaccel_deps="vaapi"
2885 h264_vaapi_hwaccel_select="h264_decoder"
2886 h264_vdpau_hwaccel_deps="vdpau"
2887 h264_vdpau_hwaccel_select="h264_decoder"
2888 h264_videotoolbox_hwaccel_deps="videotoolbox"
2889 h264_videotoolbox_hwaccel_select="h264_decoder"
2890 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2891 hevc_d3d11va_hwaccel_select="hevc_decoder"
2892 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2893 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2894 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2895 hevc_dxva2_hwaccel_select="hevc_decoder"
2896 hevc_nvdec_hwaccel_deps="nvdec"
2897 hevc_nvdec_hwaccel_select="hevc_decoder"
2898 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2899 hevc_vaapi_hwaccel_select="hevc_decoder"
2900 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2901 hevc_vdpau_hwaccel_select="hevc_decoder"
2902 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2903 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2904 mjpeg_nvdec_hwaccel_deps="nvdec"
2905 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2906 mjpeg_vaapi_hwaccel_deps="vaapi"
2907 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2908 mpeg_xvmc_hwaccel_deps="xvmc"
2909 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2910 mpeg1_nvdec_hwaccel_deps="nvdec"
2911 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2912 mpeg1_vdpau_hwaccel_deps="vdpau"
2913 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2914 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2915 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2916 mpeg1_xvmc_hwaccel_deps="xvmc"
2917 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2918 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2919 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2920 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2921 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2922 mpeg2_dxva2_hwaccel_deps="dxva2"
2923 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2924 mpeg2_nvdec_hwaccel_deps="nvdec"
2925 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2926 mpeg2_vaapi_hwaccel_deps="vaapi"
2927 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2928 mpeg2_vdpau_hwaccel_deps="vdpau"
2929 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2930 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2931 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2932 mpeg2_xvmc_hwaccel_deps="xvmc"
2933 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2934 mpeg4_nvdec_hwaccel_deps="nvdec"
2935 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2936 mpeg4_vaapi_hwaccel_deps="vaapi"
2937 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2938 mpeg4_vdpau_hwaccel_deps="vdpau"
2939 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2940 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2941 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2942 vc1_d3d11va_hwaccel_deps="d3d11va"
2943 vc1_d3d11va_hwaccel_select="vc1_decoder"
2944 vc1_d3d11va2_hwaccel_deps="d3d11va"
2945 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2946 vc1_dxva2_hwaccel_deps="dxva2"
2947 vc1_dxva2_hwaccel_select="vc1_decoder"
2948 vc1_nvdec_hwaccel_deps="nvdec"
2949 vc1_nvdec_hwaccel_select="vc1_decoder"
2950 vc1_vaapi_hwaccel_deps="vaapi"
2951 vc1_vaapi_hwaccel_select="vc1_decoder"
2952 vc1_vdpau_hwaccel_deps="vdpau"
2953 vc1_vdpau_hwaccel_select="vc1_decoder"
2954 vp8_nvdec_hwaccel_deps="nvdec"
2955 vp8_nvdec_hwaccel_select="vp8_decoder"
2956 vp8_vaapi_hwaccel_deps="vaapi"
2957 vp8_vaapi_hwaccel_select="vp8_decoder"
2958 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2959 vp9_d3d11va_hwaccel_select="vp9_decoder"
2960 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2961 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2962 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2963 vp9_dxva2_hwaccel_select="vp9_decoder"
2964 vp9_nvdec_hwaccel_deps="nvdec"
2965 vp9_nvdec_hwaccel_select="vp9_decoder"
2966 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2967 vp9_vaapi_hwaccel_select="vp9_decoder"
2968 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2969 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2970 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2971 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2972 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2973 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2974
2975 # hardware-accelerated codecs
2976 omx_deps="libdl pthreads"
2977 omx_rpi_select="omx"
2978 qsv_deps="libmfx"
2979 qsvdec_select="qsv"
2980 qsvenc_select="qsv"
2981 qsvvpp_select="qsv"
2982 vaapi_encode_deps="vaapi"
2983 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2984
2985 hwupload_cuda_filter_deps="ffnvcodec"
2986 scale_npp_filter_deps="ffnvcodec libnpp"
2987 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2988 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2989 transpose_npp_filter_deps="ffnvcodec libnpp"
2990
2991 amf_deps_any="libdl LoadLibrary"
2992 nvenc_deps="ffnvcodec"
2993 nvenc_deps_any="libdl LoadLibrary"
2994 nvenc_encoder_deps="nvenc"
2995
2996 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2997 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2998 h264_amf_encoder_deps="amf"
2999 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3000 h264_cuvid_decoder_deps="cuvid"
3001 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3002 h264_mediacodec_decoder_deps="mediacodec"
3003 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3004 h264_mmal_decoder_deps="mmal"
3005 h264_nvenc_encoder_deps="nvenc"
3006 h264_omx_encoder_deps="omx"
3007 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3008 h264_qsv_encoder_select="qsvenc"
3009 h264_rkmpp_decoder_deps="rkmpp"
3010 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3011 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3012 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3013 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3014 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3015 hevc_amf_encoder_deps="amf"
3016 hevc_cuvid_decoder_deps="cuvid"
3017 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3018 hevc_mediacodec_decoder_deps="mediacodec"
3019 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3020 hevc_nvenc_encoder_deps="nvenc"
3021 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3022 hevc_qsv_encoder_select="hevcparse qsvenc"
3023 hevc_rkmpp_decoder_deps="rkmpp"
3024 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3025 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3026 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3027 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3028 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3029 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3030 mjpeg_cuvid_decoder_deps="cuvid"
3031 mjpeg_qsv_encoder_deps="libmfx"
3032 mjpeg_qsv_encoder_select="qsvenc"
3033 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3034 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3035 mpeg1_cuvid_decoder_deps="cuvid"
3036 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3037 mpeg2_crystalhd_decoder_select="crystalhd"
3038 mpeg2_cuvid_decoder_deps="cuvid"
3039 mpeg2_mmal_decoder_deps="mmal"
3040 mpeg2_mediacodec_decoder_deps="mediacodec"
3041 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3042 mpeg2_qsv_encoder_select="qsvenc"
3043 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3044 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3045 mpeg4_crystalhd_decoder_select="crystalhd"
3046 mpeg4_cuvid_decoder_deps="cuvid"
3047 mpeg4_mediacodec_decoder_deps="mediacodec"
3048 mpeg4_mmal_decoder_deps="mmal"
3049 mpeg4_omx_encoder_deps="omx"
3050 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3051 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3052 msmpeg4_crystalhd_decoder_select="crystalhd"
3053 nvenc_h264_encoder_select="h264_nvenc_encoder"
3054 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3055 vc1_crystalhd_decoder_select="crystalhd"
3056 vc1_cuvid_decoder_deps="cuvid"
3057 vc1_mmal_decoder_deps="mmal"
3058 vc1_qsv_decoder_select="qsvdec vc1_parser"
3059 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3060 vp8_cuvid_decoder_deps="cuvid"
3061 vp8_mediacodec_decoder_deps="mediacodec"
3062 vp8_qsv_decoder_select="qsvdec vp8_parser"
3063 vp8_rkmpp_decoder_deps="rkmpp"
3064 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3065 vp8_vaapi_encoder_select="vaapi_encode"
3066 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3067 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3068 vp9_cuvid_decoder_deps="cuvid"
3069 vp9_mediacodec_decoder_deps="mediacodec"
3070 vp9_rkmpp_decoder_deps="rkmpp"
3071 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3072 vp9_vaapi_encoder_select="vaapi_encode"
3073 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3074 wmv3_crystalhd_decoder_select="crystalhd"
3075
3076 # parsers
3077 aac_parser_select="adts_header"
3078 av1_parser_select="cbs_av1"
3079 h264_parser_select="golomb h264dsp h264parse"
3080 hevc_parser_select="hevcparse"
3081 mpegaudio_parser_select="mpegaudioheader"
3082 mpegvideo_parser_select="mpegvideo"
3083 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3084 vc1_parser_select="vc1dsp"
3085
3086 # bitstream_filters
3087 aac_adtstoasc_bsf_select="adts_header"
3088 av1_frame_split_bsf_select="cbs_av1"
3089 av1_metadata_bsf_select="cbs_av1"
3090 eac3_core_bsf_select="ac3_parser"
3091 filter_units_bsf_select="cbs"
3092 h264_metadata_bsf_deps="const_nan"
3093 h264_metadata_bsf_select="cbs_h264"
3094 h264_redundant_pps_bsf_select="cbs_h264"
3095 hevc_metadata_bsf_select="cbs_h265"
3096 mjpeg2jpeg_bsf_select="jpegtables"
3097 mpeg2_metadata_bsf_select="cbs_mpeg2"
3098 trace_headers_bsf_select="cbs"
3099 vp9_metadata_bsf_select="cbs_vp9"
3100
3101 # external libraries
3102 aac_at_decoder_deps="audiotoolbox"
3103 aac_at_decoder_select="aac_adtstoasc_bsf"
3104 ac3_at_decoder_deps="audiotoolbox"
3105 ac3_at_decoder_select="ac3_parser"
3106 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3107 alac_at_decoder_deps="audiotoolbox"
3108 amr_nb_at_decoder_deps="audiotoolbox"
3109 avisynth_deps_any="libdl LoadLibrary"
3110 avisynth_demuxer_deps="avisynth"
3111 avisynth_demuxer_select="riffdec"
3112 eac3_at_decoder_deps="audiotoolbox"
3113 eac3_at_decoder_select="ac3_parser"
3114 gsm_ms_at_decoder_deps="audiotoolbox"
3115 ilbc_at_decoder_deps="audiotoolbox"
3116 mp1_at_decoder_deps="audiotoolbox"
3117 mp2_at_decoder_deps="audiotoolbox"
3118 mp3_at_decoder_deps="audiotoolbox"
3119 mp1_at_decoder_select="mpegaudioheader"
3120 mp2_at_decoder_select="mpegaudioheader"
3121 mp3_at_decoder_select="mpegaudioheader"
3122 pcm_alaw_at_decoder_deps="audiotoolbox"
3123 pcm_mulaw_at_decoder_deps="audiotoolbox"
3124 qdmc_at_decoder_deps="audiotoolbox"
3125 qdm2_at_decoder_deps="audiotoolbox"
3126 aac_at_encoder_deps="audiotoolbox"
3127 aac_at_encoder_select="audio_frame_queue"
3128 alac_at_encoder_deps="audiotoolbox"
3129 alac_at_encoder_select="audio_frame_queue"
3130 ilbc_at_encoder_deps="audiotoolbox"
3131 ilbc_at_encoder_select="audio_frame_queue"
3132 pcm_alaw_at_encoder_deps="audiotoolbox"
3133 pcm_alaw_at_encoder_select="audio_frame_queue"
3134 pcm_mulaw_at_encoder_deps="audiotoolbox"
3135 pcm_mulaw_at_encoder_select="audio_frame_queue"
3136 chromaprint_muxer_deps="chromaprint"
3137 h264_videotoolbox_encoder_deps="pthreads"
3138 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3139 hevc_videotoolbox_encoder_deps="pthreads"
3140 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3141 libaom_av1_decoder_deps="libaom"
3142 libaom_av1_encoder_deps="libaom"
3143 libaom_av1_encoder_select="extract_extradata_bsf"
3144 libaribb24_decoder_deps="libaribb24"
3145 libcelt_decoder_deps="libcelt"
3146 libcodec2_decoder_deps="libcodec2"
3147 libcodec2_encoder_deps="libcodec2"
3148 libdav1d_decoder_deps="libdav1d"
3149 libdavs2_decoder_deps="libdavs2"
3150 libfdk_aac_decoder_deps="libfdk_aac"
3151 libfdk_aac_encoder_deps="libfdk_aac"
3152 libfdk_aac_encoder_select="audio_frame_queue"
3153 libgme_demuxer_deps="libgme"
3154 libgsm_decoder_deps="libgsm"
3155 libgsm_encoder_deps="libgsm"
3156 libgsm_ms_decoder_deps="libgsm"
3157 libgsm_ms_encoder_deps="libgsm"
3158 libilbc_decoder_deps="libilbc"
3159 libilbc_encoder_deps="libilbc"
3160 libkvazaar_encoder_deps="libkvazaar"
3161 libmodplug_demuxer_deps="libmodplug"
3162 libmp3lame_encoder_deps="libmp3lame"
3163 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3164 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3165 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3166 libopencore_amrnb_encoder_select="audio_frame_queue"
3167 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3168 libopenh264_decoder_deps="libopenh264"
3169 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3170 libopenh264_encoder_deps="libopenh264"
3171 libopenjpeg_decoder_deps="libopenjpeg"
3172 libopenjpeg_encoder_deps="libopenjpeg"
3173 libopenmpt_demuxer_deps="libopenmpt"
3174 libopus_decoder_deps="libopus"
3175 libopus_encoder_deps="libopus"
3176 libopus_encoder_select="audio_frame_queue"
3177 librsvg_decoder_deps="librsvg"
3178 libshine_encoder_deps="libshine"
3179 libshine_encoder_select="audio_frame_queue"
3180 libspeex_decoder_deps="libspeex"
3181 libspeex_encoder_deps="libspeex"
3182 libspeex_encoder_select="audio_frame_queue"
3183 libtheora_encoder_deps="libtheora"
3184 libtwolame_encoder_deps="libtwolame"
3185 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3186 libvorbis_decoder_deps="libvorbis"
3187 libvorbis_encoder_deps="libvorbis libvorbisenc"
3188 libvorbis_encoder_select="audio_frame_queue"
3189 libvpx_vp8_decoder_deps="libvpx"
3190 libvpx_vp8_encoder_deps="libvpx"
3191 libvpx_vp9_decoder_deps="libvpx"
3192 libvpx_vp9_encoder_deps="libvpx"
3193 libwavpack_encoder_deps="libwavpack"
3194 libwavpack_encoder_select="audio_frame_queue"
3195 libwebp_encoder_deps="libwebp"
3196 libwebp_anim_encoder_deps="libwebp"
3197 libx262_encoder_deps="libx262"
3198 libx264_encoder_deps="libx264"
3199 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3200 libx264rgb_encoder_select="libx264_encoder"
3201 libx265_encoder_deps="libx265"
3202 libxavs_encoder_deps="libxavs"
3203 libxavs2_encoder_deps="libxavs2"
3204 libxvid_encoder_deps="libxvid"
3205 libzvbi_teletext_decoder_deps="libzvbi"
3206 vapoursynth_demuxer_deps="vapoursynth"
3207 videotoolbox_suggest="coreservices"
3208 videotoolbox_deps="corefoundation coremedia corevideo"
3209 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3210
3211 # demuxers / muxers
3212 ac3_demuxer_select="ac3_parser"
3213 aiff_muxer_select="iso_media"
3214 asf_demuxer_select="riffdec"
3215 asf_o_demuxer_select="riffdec"
3216 asf_muxer_select="riffenc"
3217 asf_stream_muxer_select="asf_muxer"
3218 avi_demuxer_select="iso_media riffdec exif"
3219 avi_muxer_select="riffenc"
3220 caf_demuxer_select="iso_media riffdec"
3221 caf_muxer_select="iso_media"
3222 dash_muxer_select="mp4_muxer"
3223 dash_demuxer_deps="libxml2"
3224 dirac_demuxer_select="dirac_parser"
3225 dts_demuxer_select="dca_parser"
3226 dtshd_demuxer_select="dca_parser"
3227 dv_demuxer_select="dvprofile"
3228 dv_muxer_select="dvprofile"
3229 dxa_demuxer_select="riffdec"
3230 eac3_demuxer_select="ac3_parser"
3231 f4v_muxer_select="mov_muxer"
3232 fifo_muxer_deps="threads"
3233 flac_demuxer_select="flac_parser"
3234 hds_muxer_select="flv_muxer"
3235 hls_muxer_select="mpegts_muxer"
3236 hls_muxer_suggest="gcrypt openssl"
3237 image2_alias_pix_demuxer_select="image2_demuxer"
3238 image2_brender_pix_demuxer_select="image2_demuxer"
3239 ipod_muxer_select="mov_muxer"
3240 ismv_muxer_select="mov_muxer"
3241 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3242 matroska_audio_muxer_select="matroska_muxer"
3243 matroska_demuxer_select="iso_media riffdec"
3244 matroska_demuxer_suggest="bzlib lzo zlib"
3245 matroska_muxer_select="iso_media riffenc"
3246 mmf_muxer_select="riffenc"
3247 mov_demuxer_select="iso_media riffdec"
3248 mov_demuxer_suggest="zlib"
3249 mov_muxer_select="iso_media riffenc rtpenc_chain"
3250 mp3_demuxer_select="mpegaudio_parser"
3251 mp3_muxer_select="mpegaudioheader"
3252 mp4_muxer_select="mov_muxer"
3253 mpegts_demuxer_select="iso_media"
3254 mpegts_muxer_select="adts_muxer latm_muxer"
3255 mpegtsraw_demuxer_select="mpegts_demuxer"
3256 mxf_d10_muxer_select="mxf_muxer"
3257 mxf_opatom_muxer_select="mxf_muxer"
3258 nut_muxer_select="riffenc"
3259 nuv_demuxer_select="riffdec"
3260 oga_muxer_select="ogg_muxer"
3261 ogg_demuxer_select="dirac_parse"
3262 ogv_muxer_select="ogg_muxer"
3263 opus_muxer_select="ogg_muxer"
3264 psp_muxer_select="mov_muxer"
3265 rtp_demuxer_select="sdp_demuxer"
3266 rtp_muxer_select="golomb"
3267 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3268 rtsp_demuxer_select="http_protocol rtpdec"
3269 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3270 sap_demuxer_select="sdp_demuxer"
3271 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3272 sdp_demuxer_select="rtpdec"
3273 smoothstreaming_muxer_select="ismv_muxer"
3274 spdif_demuxer_select="adts_header"
3275 spdif_muxer_select="adts_header"
3276 spx_muxer_select="ogg_muxer"
3277 swf_demuxer_suggest="zlib"
3278 tak_demuxer_select="tak_parser"
3279 tg2_muxer_select="mov_muxer"
3280 tgp_muxer_select="mov_muxer"
3281 vobsub_demuxer_select="mpegps_demuxer"
3282 w64_demuxer_select="wav_demuxer"
3283 w64_muxer_select="wav_muxer"
3284 wav_demuxer_select="riffdec"
3285 wav_muxer_select="riffenc"
3286 webm_muxer_select="iso_media riffenc"
3287 webm_dash_manifest_demuxer_select="matroska_demuxer"
3288 wtv_demuxer_select="mpegts_demuxer riffdec"
3289 wtv_muxer_select="mpegts_muxer riffenc"
3290 xmv_demuxer_select="riffdec"
3291 xwma_demuxer_select="riffdec"
3292
3293 # indevs / outdevs
3294 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3295 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3296 alsa_indev_deps="alsa"
3297 alsa_outdev_deps="alsa"
3298 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3299 avfoundation_indev_suggest="coregraphics applicationservices"
3300 avfoundation_indev_extralibs="-framework Foundation"
3301 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3302 caca_outdev_deps="libcaca"
3303 decklink_deps_any="libdl LoadLibrary"
3304 decklink_indev_deps="decklink threads"
3305 decklink_indev_extralibs="-lstdc++"
3306 decklink_outdev_deps="decklink threads"
3307 decklink_outdev_suggest="libklvanc"
3308 decklink_outdev_extralibs="-lstdc++"
3309 dshow_indev_deps="IBaseFilter"
3310 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3311 fbdev_indev_deps="linux_fb_h"
3312 fbdev_outdev_deps="linux_fb_h"
3313 gdigrab_indev_deps="CreateDIBSection"
3314 gdigrab_indev_extralibs="-lgdi32"
3315 gdigrab_indev_select="bmp_decoder"
3316 iec61883_indev_deps="libiec61883"
3317 jack_indev_deps="libjack"
3318 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3319 kmsgrab_indev_deps="libdrm"
3320 lavfi_indev_deps="avfilter"
3321 libcdio_indev_deps="libcdio"
3322 libdc1394_indev_deps="libdc1394"
3323 openal_indev_deps="openal"
3324 opengl_outdev_deps="opengl"
3325 opengl_outdev_suggest="sdl2"
3326 oss_indev_deps_any="sys_soundcard_h"
3327 oss_outdev_deps_any="sys_soundcard_h"
3328 pulse_indev_deps="libpulse"
3329 pulse_outdev_deps="libpulse"
3330 sdl2_outdev_deps="sdl2"
3331 sndio_indev_deps="sndio"
3332 sndio_outdev_deps="sndio"
3333 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3334 v4l2_indev_suggest="libv4l2"
3335 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3336 v4l2_outdev_suggest="libv4l2"
3337 vfwcap_indev_deps="vfw32 vfwcap_defines"
3338 xcbgrab_indev_deps="libxcb"
3339 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3340 xv_outdev_deps="xlib"
3341
3342 # protocols
3343 async_protocol_deps="threads"
3344 bluray_protocol_deps="libbluray"
3345 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3346 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3347 ffrtmpcrypt_protocol_select="tcp_protocol"
3348 ffrtmphttp_protocol_conflict="librtmp_protocol"
3349 ffrtmphttp_protocol_select="http_protocol"
3350 ftp_protocol_select="tcp_protocol"
3351 gopher_protocol_select="network"
3352 http_protocol_select="tcp_protocol"
3353 http_protocol_suggest="zlib"
3354 httpproxy_protocol_select="tcp_protocol"
3355 httpproxy_protocol_suggest="zlib"
3356 https_protocol_select="tls_protocol"
3357 https_protocol_suggest="zlib"
3358 icecast_protocol_select="http_protocol"
3359 mmsh_protocol_select="http_protocol"
3360 mmst_protocol_select="network"
3361 rtmp_protocol_conflict="librtmp_protocol"
3362 rtmp_protocol_select="tcp_protocol"
3363 rtmp_protocol_suggest="zlib"
3364 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3365 rtmpe_protocol_suggest="zlib"
3366 rtmps_protocol_conflict="librtmp_protocol"
3367 rtmps_protocol_select="tls_protocol"
3368 rtmps_protocol_suggest="zlib"
3369 rtmpt_protocol_select="ffrtmphttp_protocol"
3370 rtmpt_protocol_suggest="zlib"
3371 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3372 rtmpte_protocol_suggest="zlib"
3373 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3374 rtmpts_protocol_suggest="zlib"
3375 rtp_protocol_select="udp_protocol"
3376 schannel_conflict="openssl gnutls libtls mbedtls"
3377 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3378 sctp_protocol_select="network"
3379 securetransport_conflict="openssl gnutls libtls mbedtls"
3380 srtp_protocol_select="rtp_protocol srtp"
3381 tcp_protocol_select="network"
3382 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3383 tls_protocol_select="tcp_protocol"
3384 udp_protocol_select="network"
3385 udplite_protocol_select="network"
3386 unix_protocol_deps="sys_un_h"
3387 unix_protocol_select="network"
3388
3389 # external library protocols
3390 librtmp_protocol_deps="librtmp"
3391 librtmpe_protocol_deps="librtmp"
3392 librtmps_protocol_deps="librtmp"
3393 librtmpt_protocol_deps="librtmp"
3394 librtmpte_protocol_deps="librtmp"
3395 libsmbclient_protocol_deps="libsmbclient gplv3"
3396 libsrt_protocol_deps="libsrt"
3397 libsrt_protocol_select="network"
3398 libssh_protocol_deps="libssh"
3399 libtls_conflict="openssl gnutls mbedtls"
3400
3401 # filters
3402 afftdn_filter_deps="avcodec"
3403 afftdn_filter_select="fft"
3404 afftfilt_filter_deps="avcodec"
3405 afftfilt_filter_select="fft"
3406 afir_filter_deps="avcodec"
3407 afir_filter_select="fft"
3408 amovie_filter_deps="avcodec avformat"
3409 aresample_filter_deps="swresample"
3410 asr_filter_deps="pocketsphinx"
3411 ass_filter_deps="libass"
3412 atempo_filter_deps="avcodec"
3413 atempo_filter_select="rdft"
3414 avgblur_opencl_filter_deps="opencl"
3415 azmq_filter_deps="libzmq"
3416 blackframe_filter_deps="gpl"
3417 bm3d_filter_deps="avcodec"
3418 bm3d_filter_select="dct"
3419 boxblur_filter_deps="gpl"
3420 boxblur_opencl_filter_deps="opencl gpl"
3421 bs2b_filter_deps="libbs2b"
3422 colorkey_opencl_filter_deps="opencl"
3423 colormatrix_filter_deps="gpl"
3424 convolution_opencl_filter_deps="opencl"
3425 convolve_filter_deps="avcodec"
3426 convolve_filter_select="fft"
3427 coreimage_filter_deps="coreimage appkit"
3428 coreimage_filter_extralibs="-framework OpenGL"
3429 coreimagesrc_filter_deps="coreimage appkit"
3430 coreimagesrc_filter_extralibs="-framework OpenGL"
3431 cover_rect_filter_deps="avcodec avformat gpl"
3432 cropdetect_filter_deps="gpl"
3433 deconvolve_filter_deps="avcodec"
3434 deconvolve_filter_select="fft"
3435 deinterlace_qsv_filter_deps="libmfx"
3436 deinterlace_vaapi_filter_deps="vaapi"
3437 delogo_filter_deps="gpl"
3438 denoise_vaapi_filter_deps="vaapi"
3439 derain_filter_select="dnn"
3440 deshake_filter_select="pixelutils"
3441 dilation_opencl_filter_deps="opencl"
3442 drawtext_filter_deps="libfreetype"
3443 drawtext_filter_suggest="libfontconfig libfribidi"
3444 elbg_filter_deps="avcodec"
3445 eq_filter_deps="gpl"
3446 erosion_opencl_filter_deps="opencl"
3447 fftfilt_filter_deps="avcodec"
3448 fftfilt_filter_select="rdft"
3449 fftdnoiz_filter_deps="avcodec"
3450 fftdnoiz_filter_select="fft"
3451 find_rect_filter_deps="avcodec avformat gpl"
3452 firequalizer_filter_deps="avcodec"
3453 firequalizer_filter_select="rdft"
3454 flite_filter_deps="libflite"
3455 framerate_filter_select="scene_sad"
3456 freezedetect_filter_select="scene_sad"
3457 frei0r_filter_deps="frei0r libdl"
3458 frei0r_src_filter_deps="frei0r libdl"
3459 fspp_filter_deps="gpl"
3460 geq_filter_deps="gpl"
3461 histeq_filter_deps="gpl"
3462 hqdn3d_filter_deps="gpl"
3463 interlace_filter_deps="gpl"
3464 kerndeint_filter_deps="gpl"
3465 ladspa_filter_deps="ladspa libdl"
3466 lensfun_filter_deps="liblensfun version3"
3467 lv2_filter_deps="lv2"
3468 mcdeint_filter_deps="avcodec gpl"
3469 movie_filter_deps="avcodec avformat"
3470 mpdecimate_filter_deps="gpl"
3471 mpdecimate_filter_select="pixelutils"
3472 minterpolate_filter_select="scene_sad"
3473 mptestsrc_filter_deps="gpl"
3474 negate_filter_deps="lut_filter"
3475 nlmeans_opencl_filter_deps="opencl"
3476 nnedi_filter_deps="gpl"
3477 ocr_filter_deps="libtesseract"
3478 ocv_filter_deps="libopencv"
3479 openclsrc_filter_deps="opencl"
3480 overlay_opencl_filter_deps="opencl"
3481 overlay_qsv_filter_deps="libmfx"
3482 overlay_qsv_filter_select="qsvvpp"
3483 owdenoise_filter_deps="gpl"
3484 pan_filter_deps="swresample"
3485 perspective_filter_deps="gpl"
3486 phase_filter_deps="gpl"
3487 pp7_filter_deps="gpl"
3488 pp_filter_deps="gpl postproc"
3489 prewitt_opencl_filter_deps="opencl"
3490 procamp_vaapi_filter_deps="vaapi"
3491 program_opencl_filter_deps="opencl"
3492 pullup_filter_deps="gpl"
3493 removelogo_filter_deps="avcodec avformat swscale"
3494 repeatfields_filter_deps="gpl"
3495 resample_filter_deps="avresample"
3496 roberts_opencl_filter_deps="opencl"
3497 rubberband_filter_deps="librubberband"
3498 sab_filter_deps="gpl swscale"
3499 scale2ref_filter_deps="swscale"
3500 scale_filter_deps="swscale"
3501 scale_qsv_filter_deps="libmfx"
3502 select_filter_select="scene_sad"
3503 sharpness_vaapi_filter_deps="vaapi"
3504 showcqt_filter_deps="avcodec avformat swscale"
3505 showcqt_filter_suggest="libfontconfig libfreetype"
3506 showcqt_filter_select="fft"
3507 showfreqs_filter_deps="avcodec"
3508 showfreqs_filter_select="fft"
3509 showspectrum_filter_deps="avcodec"
3510 showspectrum_filter_select="fft"
3511 showspectrumpic_filter_deps="avcodec"
3512 showspectrumpic_filter_select="fft"
3513 signature_filter_deps="gpl avcodec avformat"
3514 smartblur_filter_deps="gpl swscale"
3515 sobel_opencl_filter_deps="opencl"
3516 sofalizer_filter_deps="libmysofa avcodec"
3517 sofalizer_filter_select="fft"
3518 spectrumsynth_filter_deps="avcodec"
3519 spectrumsynth_filter_select="fft"
3520 spp_filter_deps="gpl avcodec"
3521 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3522 sr_filter_deps="avformat swscale"
3523 sr_filter_select="dnn"
3524 stereo3d_filter_deps="gpl"
3525 subtitles_filter_deps="avformat avcodec libass"
3526 super2xsai_filter_deps="gpl"
3527 pixfmts_super2xsai_test_deps="super2xsai_filter"
3528 tinterlace_filter_deps="gpl"
3529 tinterlace_merge_test_deps="tinterlace_filter"
3530 tinterlace_pad_test_deps="tinterlace_filter"
3531 tonemap_filter_deps="const_nan"
3532 tonemap_opencl_filter_deps="opencl const_nan"
3533 transpose_opencl_filter_deps="opencl"
3534 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3535 unsharp_opencl_filter_deps="opencl"
3536 uspp_filter_deps="gpl avcodec"
3537 vaguedenoiser_filter_deps="gpl"
3538 vidstabdetect_filter_deps="libvidstab"
3539 vidstabtransform_filter_deps="libvidstab"
3540 libvmaf_filter_deps="libvmaf pthreads"
3541 zmq_filter_deps="libzmq"
3542 zoompan_filter_deps="swscale"
3543 zscale_filter_deps="libzimg const_nan"
3544 scale_vaapi_filter_deps="vaapi"
3545 vpp_qsv_filter_deps="libmfx"
3546 vpp_qsv_filter_select="qsvvpp"
3547 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3548
3549 # examples
3550 avio_dir_cmd_deps="avformat avutil"
3551 avio_reading_deps="avformat avcodec avutil"
3552 decode_audio_example_deps="avcodec avutil"
3553 decode_video_example_deps="avcodec avutil"
3554 demuxing_decoding_example_deps="avcodec avformat avutil"
3555 encode_audio_example_deps="avcodec avutil"
3556 encode_video_example_deps="avcodec avutil"
3557 extract_mvs_example_deps="avcodec avformat avutil"
3558 filter_audio_example_deps="avfilter avutil"
3559 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3560 filtering_video_example_deps="avfilter avcodec avformat avutil"
3561 http_multiclient_example_deps="avformat avutil fork"
3562 hw_decode_example_deps="avcodec avformat avutil"
3563 metadata_example_deps="avformat avutil"
3564 muxing_example_deps="avcodec avformat avutil swscale"
3565 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3566 remuxing_example_deps="avcodec avformat avutil"
3567 resampling_audio_example_deps="avutil swresample"
3568 scaling_video_example_deps="avutil swscale"
3569 transcode_aac_example_deps="avcodec avformat swresample"
3570 transcoding_example_deps="avfilter avcodec avformat avutil"
3571 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3572 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3573
3574 # EXTRALIBS_LIST
3575 cpu_init_extralibs="pthreads_extralibs"
3576 cws2fws_extralibs="zlib_extralibs"
3577
3578 # libraries, in any order
3579 avcodec_deps="avutil"
3580 avcodec_suggest="libm"
3581 avcodec_select="null_bsf"
3582 avdevice_deps="avformat avcodec avutil"
3583 avdevice_suggest="libm"
3584 avfilter_deps="avutil"
3585 avfilter_suggest="libm"
3586 avformat_deps="avcodec avutil"
3587 avformat_suggest="libm network zlib"
3588 avresample_deps="avutil"
3589 avresample_suggest="libm"
3590 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3591 postproc_deps="avutil gpl"
3592 postproc_suggest="libm"
3593 swresample_deps="avutil"
3594 swresample_suggest="libm libsoxr"
3595 swscale_deps="avutil"
3596 swscale_suggest="libm"
3597
3598 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3599 avfilter_extralibs="pthreads_extralibs"
3600 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3601
3602 # programs
3603 ffmpeg_deps="avcodec avfilter avformat"
3604 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3605                hflip_filter null_filter
3606                transpose_filter trim_filter vflip_filter"
3607 ffmpeg_suggest="ole32 psapi shell32"
3608 ffplay_deps="avcodec avformat swscale swresample sdl2"
3609 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3610 ffplay_suggest="shell32"
3611 ffprobe_deps="avcodec avformat"
3612 ffprobe_suggest="shell32"
3613
3614 # documentation
3615 podpages_deps="perl"
3616 manpages_deps="perl pod2man"
3617 htmlpages_deps="perl"
3618 htmlpages_deps_any="makeinfo_html texi2html"
3619 txtpages_deps="perl makeinfo"
3620 doc_deps_any="manpages htmlpages podpages txtpages"
3621
3622 # default parameters
3623
3624 logfile="ffbuild/config.log"
3625
3626 # installation paths
3627 prefix_default="/usr/local"
3628 bindir_default='${prefix}/bin'
3629 datadir_default='${prefix}/share/ffmpeg'
3630 docdir_default='${prefix}/share/doc/ffmpeg'
3631 incdir_default='${prefix}/include'
3632 libdir_default='${prefix}/lib'
3633 mandir_default='${prefix}/share/man'
3634
3635 # toolchain
3636 ar_default="ar"
3637 cc_default="gcc"
3638 cxx_default="g++"
3639 host_cc_default="gcc"
3640 doxygen_default="doxygen"
3641 install="install"
3642 ln_s_default="ln -s -f"
3643 nm_default="nm -g"
3644 pkg_config_default=pkg-config
3645 ranlib_default="ranlib"
3646 strip_default="strip"
3647 version_script='--version-script'
3648 objformat="elf32"
3649 x86asmexe_default="nasm"
3650 windres_default="windres"
3651 nvcc_default="nvcc"
3652 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3653 striptype="direct"
3654
3655 # OS
3656 target_os_default=$(tolower $(uname -s))
3657 host_os=$target_os_default
3658
3659 # machine
3660 if test "$target_os_default" = aix; then
3661     arch_default=$(uname -p)
3662     strip_default="strip -X32_64"
3663     nm_default="nm -g -X32_64"
3664 else
3665     arch_default=$(uname -m)
3666 fi
3667 cpu="generic"
3668 intrinsics="none"
3669
3670 # configurable options
3671 enable $PROGRAM_LIST
3672 enable $DOCUMENT_LIST
3673 enable $EXAMPLE_LIST
3674 enable $(filter_out avresample $LIBRARY_LIST)
3675 enable stripping
3676
3677 enable asm
3678 enable debug
3679 enable doc
3680 enable faan faandct faanidct
3681 enable optimizations
3682 enable runtime_cpudetect
3683 enable safe_bitstream_reader
3684 enable static
3685 enable swscale_alpha
3686 enable valgrind_backtrace
3687
3688 sws_max_filter_size_default=256
3689 set_default sws_max_filter_size
3690
3691 # internal components are enabled by default
3692 enable $EXTRALIBS_LIST
3693
3694 # Avoid external, non-system, libraries getting enabled by dependency resolution
3695 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3696
3697 # build settings
3698 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3699 LIBPREF="lib"
3700 LIBSUF=".a"
3701 FULLNAME='$(NAME)$(BUILDSUF)'
3702 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3703 SLIBPREF="lib"
3704 SLIBSUF=".so"
3705 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3706 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3707 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3708 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3709 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3710 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3711 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3712
3713 asflags_filter=echo
3714 cflags_filter=echo
3715 ldflags_filter=echo
3716
3717 AS_C='-c'
3718 AS_O='-o $@'
3719 CC_C='-c'
3720 CC_E='-E -o $@'
3721 CC_O='-o $@'
3722 CXX_C='-c'
3723 CXX_O='-o $@'
3724 OBJCC_C='-c'
3725 OBJCC_E='-E -o $@'
3726 OBJCC_O='-o $@'
3727 X86ASM_O='-o $@'
3728 LD_O='-o $@'
3729 LD_LIB='-l%'
3730 LD_PATH='-L'
3731 HOSTCC_C='-c'
3732 HOSTCC_E='-E -o $@'
3733 HOSTCC_O='-o $@'
3734 HOSTLD_O='-o $@'
3735 NVCC_C='-c'
3736 NVCC_O='-o $@'
3737
3738 host_extralibs='-lm'
3739 host_cflags_filter=echo
3740 host_ldflags_filter=echo
3741
3742 target_path='$(CURDIR)'
3743
3744 # since the object filename is not given with the -MM flag, the compiler
3745 # is only able to print the basename, and we must add the path ourselves
3746 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3747 DEPFLAGS='-MM'
3748
3749 mkdir -p ffbuild
3750
3751 # find source path
3752 if test -f configure; then
3753     source_path=.
3754 elif test -f src/configure; then
3755     source_path=src
3756 else
3757     source_path=$(cd $(dirname "$0"); pwd)
3758     case "$source_path" in
3759         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3760     esac
3761     test -e "$source_path/config.h" &&
3762         die "Out of tree builds are impossible with config.h in source dir."
3763 fi
3764
3765 for v in "$@"; do
3766     r=${v#*=}
3767     l=${v%"$r"}
3768     r=$(sh_quote "$r")
3769     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3770 done
3771
3772 find_things_extern(){
3773     thing=$1
3774     pattern=$2
3775     file=$source_path/$3
3776     out=${4:-$thing}
3777     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3778 }
3779
3780 find_filters_extern(){
3781     file=$source_path/$1
3782     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3783 }
3784
3785 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3786 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3787 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3788 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3789 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3790 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3791 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3792 CODEC_LIST="
3793     $ENCODER_LIST
3794     $DECODER_LIST
3795 "
3796 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3797 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3798 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3799 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3800
3801 AVCODEC_COMPONENTS_LIST="
3802     $BSF_LIST
3803     $DECODER_LIST
3804     $ENCODER_LIST
3805     $HWACCEL_LIST
3806     $PARSER_LIST
3807 "
3808
3809 AVDEVICE_COMPONENTS_LIST="
3810     $INDEV_LIST
3811     $OUTDEV_LIST
3812 "
3813
3814 AVFILTER_COMPONENTS_LIST="
3815     $FILTER_LIST
3816 "
3817
3818 AVFORMAT_COMPONENTS_LIST="
3819     $DEMUXER_LIST
3820     $MUXER_LIST
3821     $PROTOCOL_LIST
3822 "
3823
3824 ALL_COMPONENTS="
3825     $AVCODEC_COMPONENTS_LIST
3826     $AVDEVICE_COMPONENTS_LIST
3827     $AVFILTER_COMPONENTS_LIST
3828     $AVFORMAT_COMPONENTS_LIST
3829 "
3830
3831 for n in $COMPONENT_LIST; do
3832     v=$(toupper ${n%s})_LIST
3833     eval enable \$$v
3834     eval ${n}_if_any="\$$v"
3835 done
3836
3837 enable $ARCH_EXT_LIST
3838
3839 die_unknown(){
3840     echo "Unknown option \"$1\"."
3841     echo "See $0 --help for available options."
3842     exit 1
3843 }
3844
3845 print_in_columns() {
3846     cols=$(expr $ncols / 24)
3847     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3848 }
3849
3850 show_list() {
3851     suffix=_$1
3852     shift
3853     echo $* | sed s/$suffix//g | print_in_columns
3854     exit 0
3855 }
3856
3857 rand_list(){
3858     IFS=', '
3859     set -- $*
3860     unset IFS
3861     for thing; do
3862         comp=${thing%:*}
3863         prob=${thing#$comp}
3864         prob=${prob#:}
3865         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3866         echo "prob ${prob:-0.5}"
3867         printf '%s\n' $comp
3868     done
3869 }
3870
3871 do_random(){
3872     action=$1
3873     shift
3874     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3875     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3876 }
3877
3878 for opt do
3879     optval="${opt#*=}"
3880     case "$opt" in
3881         --extra-ldflags=*)
3882             add_ldflags $optval
3883         ;;
3884         --extra-ldexeflags=*)
3885             add_ldexeflags $optval
3886         ;;
3887         --extra-ldsoflags=*)
3888             add_ldsoflags $optval
3889         ;;
3890         --extra-ldlibflags=*)
3891             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3892                  "removed in the future. Use --extra-ldsoflags instead."
3893             add_ldsoflags $optval
3894         ;;
3895         --extra-libs=*)
3896             add_extralibs $optval
3897         ;;
3898         --disable-devices)
3899             disable $INDEV_LIST $OUTDEV_LIST
3900         ;;
3901         --enable-debug=*)
3902             debuglevel="$optval"
3903         ;;
3904         --disable-programs)
3905             disable $PROGRAM_LIST
3906         ;;
3907         --disable-everything)
3908             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3909         ;;
3910         --disable-all)
3911             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3912             disable $LIBRARY_LIST $PROGRAM_LIST doc
3913             enable avutil
3914         ;;
3915         --enable-random|--disable-random)
3916             action=${opt%%-random}
3917             do_random ${action#--} $COMPONENT_LIST
3918         ;;
3919         --enable-random=*|--disable-random=*)
3920             action=${opt%%-random=*}
3921             do_random ${action#--} $optval
3922         ;;
3923         --enable-sdl)
3924             enable sdl2
3925         ;;
3926         --enable-*=*|--disable-*=*)
3927             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3928             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3929             eval list=\$$(toupper $thing)_LIST
3930             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3931             list=$(filter "$name" $list)
3932             [ "$list" = "" ] && warn "Option $opt did not match anything"
3933             test $action = enable && warn_if_gets_disabled $list
3934             $action $list
3935         ;;
3936         --enable-yasm|--disable-yasm)
3937             warn "The ${opt} option is only provided for compatibility and will be\n"\
3938                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3939             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3940         ;;
3941         --yasmexe=*)
3942             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3943                  "removed in the future. Use --x86asmexe instead."
3944             x86asmexe="$optval"
3945         ;;
3946         --enable-?*|--disable-?*)
3947             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3948             if is_in $option $COMPONENT_LIST; then
3949                 test $action = disable && action=unset
3950                 eval $action \$$(toupper ${option%s})_LIST
3951             elif is_in $option $CMDLINE_SELECT; then
3952                 $action $option
3953             else
3954                 die_unknown $opt
3955             fi
3956         ;;
3957         --list-*)
3958             NAME="${opt#--list-}"
3959             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3960             NAME=${NAME%s}
3961             eval show_list $NAME \$$(toupper $NAME)_LIST
3962         ;;
3963         --help|-h) show_help
3964         ;;
3965         --quiet|-q) quiet=yes
3966         ;;
3967         --fatal-warnings) enable fatal_warnings
3968         ;;
3969         --libfuzzer=*)
3970             libfuzzer_path="$optval"
3971         ;;
3972         *)
3973             optname="${opt%%=*}"
3974             optname="${optname#--}"
3975             optname=$(echo "$optname" | sed 's/-/_/g')
3976             if is_in $optname $CMDLINE_SET; then
3977                 eval $optname='$optval'
3978             elif is_in $optname $CMDLINE_APPEND; then
3979                 append $optname "$optval"
3980             else
3981                 die_unknown $opt
3982             fi
3983         ;;
3984     esac
3985 done
3986
3987 for e in $env; do
3988     eval "export $e"
3989 done
3990
3991 if disabled autodetect; then
3992
3993     # Unless iconv is explicitely disabled by the user, we still want to probe
3994     # for the iconv from the libc.
3995     disabled iconv || enable libc_iconv
3996
3997     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3998     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3999 fi
4000 # Mark specifically enabled, but normally autodetected libraries as requested.
4001 for lib in $AUTODETECT_LIBS; do
4002     enabled $lib && request $lib
4003 done
4004 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4005 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4006 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4007
4008 disabled logging && logfile=/dev/null
4009
4010 # command line configuration sanity checks
4011
4012 # we need to build at least one lib type
4013 if ! enabled_any static shared; then
4014     cat <<EOF
4015 At least one library type must be built.
4016 Specify --enable-static to build the static libraries or --enable-shared to
4017 build the shared libraries as well. To only build the shared libraries specify
4018 --disable-static in addition to --enable-shared.
4019 EOF
4020     exit 1
4021 fi
4022
4023 die_license_disabled() {
4024     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4025 }
4026
4027 die_license_disabled_gpl() {
4028     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4029 }
4030
4031 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4032 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4033
4034 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4035 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4036
4037 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4038
4039 if enabled nonfree; then
4040     license="nonfree and unredistributable"
4041 elif enabled gplv3; then
4042     license="GPL version 3 or later"
4043 elif enabled lgplv3; then
4044     license="LGPL version 3 or later"
4045 elif enabled gpl; then
4046     license="GPL version 2 or later"
4047 else
4048     license="LGPL version 2.1 or later"
4049 fi
4050
4051 enabled_all gnutls openssl &&
4052     die "GnuTLS and OpenSSL must not be enabled at the same time."
4053
4054 enabled_all gnutls mbedtls &&
4055     die "GnuTLS and mbedTLS must not be enabled at the same time."
4056
4057 enabled_all openssl mbedtls &&
4058     die "OpenSSL and mbedTLS must not be enabled at the same time."
4059
4060 # Disable all the library-specific components if the library itself
4061 # is disabled, see AVCODEC_LIST and following _LIST variables.
4062
4063 disable_components(){
4064     disabled ${1} && disable $(
4065         eval components="\$$(toupper ${1})_COMPONENTS"
4066         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4067     )
4068 }
4069
4070 map 'disable_components $v' $LIBRARY_LIST
4071
4072 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4073 set >> $logfile
4074
4075 test -n "$valgrind" && toolchain="valgrind-memcheck"
4076
4077 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4078     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4079     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4080 }
4081
4082 case "$toolchain" in
4083     *-asan)
4084         cc_default="${toolchain%-asan}"
4085         add_cflags  -fsanitize=address
4086         add_ldflags -fsanitize=address
4087     ;;
4088     *-msan)
4089         cc_default="${toolchain%-msan}"
4090         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4091         add_ldflags -fsanitize=memory
4092     ;;
4093     *-tsan)
4094         cc_default="${toolchain%-tsan}"
4095         add_cflags  -fsanitize=thread
4096         add_ldflags -fsanitize=thread
4097         case "$toolchain" in
4098             gcc-tsan)
4099                 add_cflags  -fPIC
4100                 add_ldflags -fPIC
4101                 ;;
4102         esac
4103     ;;
4104     *-usan)
4105         cc_default="${toolchain%-usan}"
4106         add_cflags  -fsanitize=undefined
4107         add_ldflags -fsanitize=undefined
4108     ;;
4109     valgrind-*)
4110         target_exec_default="valgrind"
4111         case "$toolchain" in
4112             valgrind-massif)
4113                 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"
4114                 ;;
4115             valgrind-memcheck)
4116                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4117                 ;;
4118         esac
4119     ;;
4120     msvc)
4121         # Check whether the current MSVC version needs the C99 converter.
4122         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4123         # support enough of C99 to build ffmpeg. Default to the new
4124         # behaviour if the regexp was unable to match anything, since this
4125         # successfully parses the version number of existing supported
4126         # versions that require the converter (MSVC 2010 and 2012).
4127         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4128         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4129             cc_default="cl.exe"
4130             cxx_default="cl.exe"
4131         else
4132             die "Unsupported MSVC version (2013 or newer required)"
4133         fi
4134         ld_default="$source_path/compat/windows/mslink"
4135         nm_default="dumpbin.exe -symbols"
4136         ar_default="lib.exe"
4137         case "$arch" in
4138         aarch64|arm64)
4139             as_default="armasm64.exe"
4140             ;;
4141         arm*)
4142             as_default="armasm.exe"
4143             ;;
4144         esac
4145         target_os_default="win32"
4146         # Use a relative path for TMPDIR. This makes sure all the
4147         # ffconf temp files are written with a relative path, avoiding
4148         # issues with msys/win32 path conversion for MSVC parameters
4149         # such as -Fo<file> or -out:<file>.
4150         TMPDIR=.
4151     ;;
4152     icl)
4153         cc_default="icl"
4154         ld_default="xilink"
4155         nm_default="dumpbin -symbols"
4156         ar_default="xilib"
4157         target_os_default="win32"
4158         TMPDIR=.
4159     ;;
4160     gcov)
4161         add_cflags  -fprofile-arcs -ftest-coverage
4162         add_ldflags -fprofile-arcs -ftest-coverage
4163     ;;
4164     llvm-cov)
4165         add_cflags -fprofile-arcs -ftest-coverage
4166         add_ldflags --coverage
4167     ;;
4168     hardened)
4169         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4170         add_cflags   -fno-strict-overflow -fstack-protector-all
4171         add_ldflags  -Wl,-z,relro -Wl,-z,now
4172         add_cflags   -fPIE
4173         add_ldexeflags -fPIE -pie
4174     ;;
4175     ?*)
4176         die "Unknown toolchain $toolchain"
4177     ;;
4178 esac
4179
4180 if test -n "$cross_prefix"; then
4181     test -n "$arch" && test -n "$target_os" ||
4182         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4183     enable cross_compile
4184 fi
4185
4186 set_default target_os
4187 if test "$target_os" = android; then
4188     cc_default="clang"
4189 fi
4190
4191 ar_default="${cross_prefix}${ar_default}"
4192 cc_default="${cross_prefix}${cc_default}"
4193 cxx_default="${cross_prefix}${cxx_default}"
4194 nm_default="${cross_prefix}${nm_default}"
4195 pkg_config_default="${cross_prefix}${pkg_config_default}"
4196 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4197     ranlib_default="${cross_prefix}${ranlib_default} -D"
4198 else
4199     ranlib_default="${cross_prefix}${ranlib_default}"
4200 fi
4201 strip_default="${cross_prefix}${strip_default}"
4202 windres_default="${cross_prefix}${windres_default}"
4203
4204 sysinclude_default="${sysroot}/usr/include"
4205
4206 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4207     target_exec x86asmexe nvcc
4208 enabled cross_compile || host_cc_default=$cc
4209 set_default host_cc
4210
4211 pkg_config_fail_message=""
4212 if ! $pkg_config --version >/dev/null 2>&1; then
4213     warn "$pkg_config not found, library detection may fail."
4214     pkg_config=false
4215 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4216     pkg_config_fail_message="
4217 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4218 fi
4219
4220 if test $doxygen != $doxygen_default && \
4221   ! $doxygen --version >/dev/null 2>&1; then
4222     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4223 fi
4224
4225 exesuf() {
4226     case $1 in
4227         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4228     esac
4229 }
4230
4231 EXESUF=$(exesuf $target_os)
4232 HOSTEXESUF=$(exesuf $host_os)
4233
4234 # set temporary file name
4235 : ${TMPDIR:=$TEMPDIR}
4236 : ${TMPDIR:=$TMP}
4237 : ${TMPDIR:=/tmp}
4238
4239 if [ -n "$tempprefix" ] ; then
4240     mktemp(){
4241         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4242         echo "$tmpname"
4243         mkdir "$tmpname"
4244     }
4245 elif ! test_cmd mktemp -u XXXXXX; then
4246     # simple replacement for missing mktemp
4247     # NOT SAFE FOR GENERAL USE
4248     mktemp(){
4249         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4250         echo "$tmpname"
4251         mkdir "$tmpname"
4252     }
4253 fi
4254
4255 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4256     die "Unable to create temporary directory in $TMPDIR."
4257
4258 tmpfile(){
4259     tmp="${FFTMPDIR}/test"$2
4260     (set -C; exec > $tmp) 2> /dev/null ||
4261         die "Unable to create temporary file in $FFTMPDIR."
4262     eval $1=$tmp
4263 }
4264
4265 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4266 trap 'exit 2' INT
4267
4268 tmpfile TMPASM .asm
4269 tmpfile TMPC   .c
4270 tmpfile TMPCPP .cpp
4271 tmpfile TMPE   $EXESUF
4272 tmpfile TMPH   .h
4273 tmpfile TMPM   .m
4274 tmpfile TMPCU  .cu
4275 tmpfile TMPO   .o
4276 tmpfile TMPS   .S
4277 tmpfile TMPSH  .sh
4278 tmpfile TMPV   .ver
4279
4280 unset -f mktemp
4281
4282 chmod +x $TMPE
4283
4284 # make sure we can execute files in $TMPDIR
4285 cat > $TMPSH 2>> $logfile <<EOF
4286 #! /bin/sh
4287 EOF
4288 chmod +x $TMPSH >> $logfile 2>&1
4289 if ! $TMPSH >> $logfile 2>&1; then
4290     cat <<EOF
4291 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4292 variable to another directory and make sure that it is not mounted noexec.
4293 EOF
4294     die "Sanity test failed."
4295 fi
4296
4297 armasm_flags(){
4298     for flag; do
4299         case $flag in
4300             # Filter out MSVC cl.exe options from cflags that shouldn't
4301             # be passed to gas-preprocessor
4302             -M[TD]*)                                            ;;
4303             *)                  echo $flag                      ;;
4304         esac
4305    done
4306 }
4307
4308 cparser_flags(){
4309     for flag; do
4310         case $flag in
4311             -Wno-switch)             echo -Wno-switch-enum ;;
4312             -Wno-format-zero-length) ;;
4313             -Wdisabled-optimization) ;;
4314             -Wno-pointer-sign)       echo -Wno-other ;;
4315             *)                       echo $flag ;;
4316         esac
4317     done
4318 }
4319
4320 msvc_common_flags(){
4321     for flag; do
4322         case $flag in
4323             # In addition to specifying certain flags under the compiler
4324             # specific filters, they must be specified here as well or else the
4325             # generic catch all at the bottom will print the original flag.
4326             -Wall)                ;;
4327             -Wextra)              ;;
4328             -std=c99)             ;;
4329             # Common flags
4330             -fomit-frame-pointer) ;;
4331             -g)                   echo -Z7 ;;
4332             -fno-math-errno)      ;;
4333             -fno-common)          ;;
4334             -fno-signed-zeros)    ;;
4335             -fPIC)                ;;
4336             -mthumb)              ;;
4337             -march=*)             ;;
4338             -lz)                  echo zlib.lib ;;
4339             -lx264)               echo libx264.lib ;;
4340             -lstdc++)             ;;
4341             -l*)                  echo ${flag#-l}.lib ;;
4342             -LARGEADDRESSAWARE)   echo $flag ;;
4343             -L*)                  echo -libpath:${flag#-L} ;;
4344             *)                    echo $flag ;;
4345         esac
4346     done
4347 }
4348
4349 msvc_flags(){
4350     msvc_common_flags "$@"
4351     for flag; do
4352         case $flag in
4353             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4354                                        -wd4554 ;;
4355             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4356                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4357                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4358                                        -wd4307 \
4359                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4360         esac
4361     done
4362 }
4363
4364 icl_flags(){
4365     msvc_common_flags "$@"
4366     for flag; do
4367         case $flag in
4368             # Despite what Intel's documentation says -Wall, which is supported
4369             # on Windows, does enable remarks so disable them here.
4370             -Wall)                echo $flag -Qdiag-disable:remark ;;
4371             -std=c99)             echo -Qstd=c99 ;;
4372             -flto)                echo -ipo ;;
4373         esac
4374     done
4375 }
4376
4377 icc_flags(){
4378     for flag; do
4379         case $flag in
4380             -flto)                echo -ipo ;;
4381             *)                    echo $flag ;;
4382         esac
4383     done
4384 }
4385
4386 suncc_flags(){
4387     for flag; do
4388         case $flag in
4389             -march=*|-mcpu=*)
4390                 case "${flag#*=}" in
4391                     native)                   echo -xtarget=native       ;;
4392                     v9|niagara)               echo -xarch=sparc          ;;
4393                     ultrasparc)               echo -xarch=sparcvis       ;;
4394                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4395                     i586|pentium)             echo -xchip=pentium        ;;
4396                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4397                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4398                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4399                     pentium4*)          echo -xtarget=pentium4           ;;
4400                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4401                     *-sse3)             echo -xarch=sse3                 ;;
4402                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4403                     bonnell)                   echo -xarch=ssse3         ;;
4404                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4405                     westmere)                  echo -xtarget=westmere    ;;
4406                     silvermont)                echo -xarch=sse4_2        ;;
4407                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4408                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4409                                                echo -xarch=avx           ;;
4410                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4411                     btver1)                    echo -xarch=amdsse4a      ;;
4412                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4413                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4414                     k8|opteron|athlon64|athlon-fx)
4415                                                echo -xarch=sse2a         ;;
4416                     athlon*)                   echo -xarch=pentium_proa  ;;
4417                 esac
4418                 ;;
4419             -std=c99)             echo -xc99              ;;
4420             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4421             -fPIC)                echo -KPIC -xcode=pic32 ;;
4422             -W*,*)                echo $flag              ;;
4423             -f*-*|-W*|-mimpure-text)                      ;;
4424             -shared)              echo -G                 ;;
4425             *)                    echo $flag              ;;
4426         esac
4427     done
4428 }
4429
4430 probe_cc(){
4431     pfx=$1
4432     _cc=$2
4433     first=$3
4434
4435     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4436     unset _ld_o _ldflags _ld_lib _ld_path
4437     unset _depflags _DEPCMD _DEPFLAGS
4438     _flags_filter=echo
4439
4440     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4441         true # no-op to avoid reading stdin in following checks
4442     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4443         _type=llvm_gcc
4444         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4445         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4446         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4447         _cflags_speed='-O3'
4448         _cflags_size='-Os'
4449     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4450         _type=gcc
4451         gcc_version=$($_cc --version | head -n1)
4452         gcc_basever=$($_cc -dumpversion)
4453         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4454         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4455         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4456         case $gcc_basever in
4457             2) ;;
4458             2.*) ;;
4459             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4460         esac
4461         if [ "$first" = true ]; then
4462             case $gcc_basever in
4463                 4.2*)
4464                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4465             esac
4466         fi
4467         _cflags_speed='-O3'
4468         _cflags_size='-Os'
4469     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4470         _type=icc
4471         _ident=$($_cc --version | head -n1)
4472         _depflags='-MMD'
4473         _cflags_speed='-O3'
4474         _cflags_size='-Os'
4475         _cflags_noopt='-O1'
4476         _flags_filter=icc_flags
4477     elif $_cc -v 2>&1 | grep -q xlc; then
4478         _type=xlc
4479         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4480         _cflags_speed='-O5'
4481         _cflags_size='-O5 -qcompact'
4482     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4483         test -d "$sysroot" || die "No valid sysroot specified."
4484         _type=armcc
4485         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4486         armcc_conf="$PWD/armcc.conf"
4487         $_cc --arm_linux_configure                 \
4488              --arm_linux_config_file="$armcc_conf" \
4489              --configure_sysroot="$sysroot"        \
4490              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4491              die "Error creating armcc configuration file."
4492         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4493         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4494         as_default="${cross_prefix}gcc"
4495         _depflags='-MMD'
4496         _cflags_speed='-O3'
4497         _cflags_size='-Os'
4498     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4499         _type=clang
4500         _ident=$($_cc --version 2>/dev/null | head -n1)
4501         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4502         _cflags_speed='-O3'
4503         _cflags_size='-Oz'
4504     elif $_cc -V 2>&1 | grep -q Sun; then
4505         _type=suncc
4506         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4507         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4508         _DEPFLAGS='-xM1 -xc99'
4509         _ldflags='-std=c99'
4510         _cflags_speed='-O5'
4511         _cflags_size='-O5 -xspace'
4512         _flags_filter=suncc_flags
4513     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4514         _type=pathscale
4515         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4516         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4517         _cflags_speed='-O2'
4518         _cflags_size='-Os'
4519         _flags_filter='filter_out -Wdisabled-optimization'
4520     elif $_cc -v 2>&1 | grep -q Open64; then
4521         _type=open64
4522         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4523         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4524         _cflags_speed='-O2'
4525         _cflags_size='-Os'
4526         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4527     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4528         _type=armasm
4529         _ident=$($_cc | head -n1)
4530         # 4509: "This form of conditional instruction is deprecated"
4531         _flags="-nologo -ignore 4509"
4532         _flags_filter=armasm_flags
4533     elif $_cc 2>&1 | grep -q Intel; then
4534         _type=icl
4535         _ident=$($_cc 2>&1 | head -n1)
4536         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4537         # Not only is O3 broken on 13.x+ but it is slower on all previous
4538         # versions (tested) as well.
4539         _cflags_speed="-O2"
4540         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4541         if $_cc 2>&1 | grep -q Linker; then
4542             _ld_o='-out:$@'
4543         else
4544             _ld_o='-Fe$@'
4545         fi
4546         _cc_o='-Fo$@'
4547         _cc_e='-P'
4548         _flags_filter=icl_flags
4549         _ld_lib='lib%.a'
4550         _ld_path='-libpath:'
4551         # -Qdiag-error to make icl error when seeing certain unknown arguments
4552         _flags='-nologo -Qdiag-error:4044,10157'
4553         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4554         # with MSVC which enables it by default.
4555         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4556         disable stripping
4557     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4558         # lld can emulate multiple different linkers; in ms link.exe mode,
4559         # the -? parameter gives the help output which contains an identifyable
4560         # string, while it gives an error in other modes.
4561         _type=lld-link
4562         # The link.exe mode doesn't have a switch for getting the version,
4563         # but we can force it back to gnu mode and get the version from there.
4564         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4565         _ld_o='-out:$@'
4566         _flags_filter=msvc_flags
4567         _ld_lib='lib%.a'
4568         _ld_path='-libpath:'
4569     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4570         _type=msvc
4571         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4572         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4573         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4574         _cflags_speed="-O2"
4575         _cflags_size="-O1"
4576         _cflags_noopt="-O1"
4577         if $_cc -nologo- 2>&1 | grep -q Linker; then
4578             _ld_o='-out:$@'
4579         else
4580             _ld_o='-Fe$@'
4581         fi
4582         _cc_o='-Fo$@'
4583         _cc_e='-P -Fi$@'
4584         _flags_filter=msvc_flags
4585         _ld_lib='lib%.a'
4586         _ld_path='-libpath:'
4587         _flags='-nologo'
4588         disable stripping
4589     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4590         _type=cparser
4591         _ident=$($_cc --version | head -n1)
4592         _depflags='-MMD'
4593         _cflags_speed='-O4'
4594         _cflags_size='-O2'
4595         _flags_filter=cparser_flags
4596     fi
4597
4598     eval ${pfx}_type=\$_type
4599     eval ${pfx}_ident=\$_ident
4600 }
4601
4602 set_ccvars(){
4603     eval ${1}_C=\${_cc_c-\${${1}_C}}
4604     eval ${1}_E=\${_cc_e-\${${1}_E}}
4605     eval ${1}_O=\${_cc_o-\${${1}_O}}
4606
4607     if [ -n "$_depflags" ]; then
4608         eval ${1}_DEPFLAGS=\$_depflags
4609     else
4610         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4611         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4612         eval DEP${1}FLAGS=\$_flags
4613     fi
4614 }
4615
4616 probe_cc cc "$cc" "true"
4617 cflags_filter=$_flags_filter
4618 cflags_speed=$_cflags_speed
4619 cflags_size=$_cflags_size
4620 cflags_noopt=$_cflags_noopt
4621 add_cflags $_flags $_cflags
4622 cc_ldflags=$_ldflags
4623 set_ccvars CC
4624 set_ccvars CXX
4625
4626 probe_cc hostcc "$host_cc"
4627 host_cflags_filter=$_flags_filter
4628 host_cflags_speed=$_cflags_speed
4629 add_host_cflags  $_flags $_cflags
4630 set_ccvars HOSTCC
4631
4632 test -n "$cc_type" && enable $cc_type ||
4633     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4634
4635 : ${as_default:=$cc}
4636 : ${objcc_default:=$cc}
4637 : ${dep_cc_default:=$cc}
4638 : ${ld_default:=$cc}
4639 : ${host_ld_default:=$host_cc}
4640 set_default ar as objcc dep_cc ld ln_s host_ld windres
4641
4642 probe_cc as "$as"
4643 asflags_filter=$_flags_filter
4644 add_asflags $_flags $_cflags
4645 set_ccvars AS
4646
4647 probe_cc objcc "$objcc"
4648 objcflags_filter=$_flags_filter
4649 add_objcflags $_flags $_cflags
4650 set_ccvars OBJC
4651
4652 probe_cc ld "$ld"
4653 ldflags_filter=$_flags_filter
4654 add_ldflags $_flags $_ldflags
4655 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4656 LD_O=${_ld_o-$LD_O}
4657 LD_LIB=${_ld_lib-$LD_LIB}
4658 LD_PATH=${_ld_path-$LD_PATH}
4659
4660 probe_cc hostld "$host_ld"
4661 host_ldflags_filter=$_flags_filter
4662 add_host_ldflags $_flags $_ldflags
4663 HOSTLD_O=${_ld_o-$HOSTLD_O}
4664
4665 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4666     probe_cc depcc "$dep_cc"
4667     CCDEP=${_DEPCMD:-$DEPCMD}
4668     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4669     DEPCCFLAGS=$_flags
4670 fi
4671
4672 if $ar 2>&1 | grep -q Microsoft; then
4673     arflags="-nologo"
4674     ar_o='-out:$@'
4675 elif $ar 2>&1 | grep -q "\[D\] "; then
4676     arflags="rcD"
4677     ar_o='$@'
4678 else
4679     arflags="rc"
4680     ar_o='$@'
4681 fi
4682
4683 add_cflags $extra_cflags
4684 add_cxxflags $extra_cxxflags
4685 add_objcflags $extra_objcflags
4686 add_asflags $extra_cflags
4687
4688 if test -n "$sysroot"; then
4689     case "$cc_type" in
4690         gcc|llvm_gcc|clang)
4691             add_cppflags --sysroot="$sysroot"
4692             add_ldflags --sysroot="$sysroot"
4693         ;;
4694     esac
4695 fi
4696
4697 if test "$cpu" = host; then
4698     enabled cross_compile &&
4699         die "--cpu=host makes no sense when cross-compiling."
4700
4701     case "$cc_type" in
4702         gcc|llvm_gcc)
4703             check_native(){
4704                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4705                 sed -n "/cc1.*$1=/{
4706                             s/.*$1=\\([^ ]*\\).*/\\1/
4707                             p
4708                             q
4709                         }" $TMPE
4710             }
4711             cpu=$(check_native -march || check_native -mcpu)
4712         ;;
4713         clang)
4714             check_native(){
4715                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4716                 sed -n "/cc1.*-target-cpu /{
4717                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4718                             p
4719                             q
4720                         }" $TMPE
4721             }
4722             cpu=$(check_native -march)
4723         ;;
4724     esac
4725
4726     test "${cpu:-host}" = host &&
4727         die "--cpu=host not supported with compiler $cc"
4728 fi
4729
4730 # Deal with common $arch aliases
4731 case "$arch" in
4732     aarch64|arm64)
4733         arch="aarch64"
4734     ;;
4735     arm*|iPad*|iPhone*)
4736         arch="arm"
4737     ;;
4738     mips*|IP*)
4739         case "$arch" in
4740         *el)
4741             add_cppflags -EL
4742             add_ldflags -EL
4743         ;;
4744         *eb)
4745             add_cppflags -EB
4746             add_ldflags -EB
4747         ;;
4748         esac
4749         arch="mips"
4750     ;;
4751     parisc*|hppa*)
4752         arch="parisc"
4753     ;;
4754     "Power Macintosh"|ppc*|powerpc*)
4755         arch="ppc"
4756     ;;
4757     s390|s390x)
4758         arch="s390"
4759     ;;
4760     sh4|sh)
4761         arch="sh4"
4762     ;;
4763     sun4*|sparc*)
4764         arch="sparc"
4765     ;;
4766     tilegx|tile-gx)
4767         arch="tilegx"
4768     ;;
4769     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4770         arch="x86"
4771     ;;
4772 esac
4773
4774 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4775 enable $arch
4776
4777 # Add processor-specific flags
4778 if enabled aarch64; then
4779
4780     case $cpu in
4781         armv*)
4782             cpuflags="-march=$cpu"
4783         ;;
4784         *)
4785             cpuflags="-mcpu=$cpu"
4786         ;;
4787     esac
4788
4789 elif enabled alpha; then
4790
4791     cpuflags="-mcpu=$cpu"
4792
4793 elif enabled arm; then
4794
4795     check_arm_arch() {
4796         test_cpp_condition stddef.h \
4797             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4798             $cpuflags
4799     }
4800
4801     probe_arm_arch() {
4802         if   check_arm_arch 4;        then echo armv4
4803         elif check_arm_arch 4T;       then echo armv4t
4804         elif check_arm_arch 5;        then echo armv5
4805         elif check_arm_arch 5E;       then echo armv5e
4806         elif check_arm_arch 5T;       then echo armv5t
4807         elif check_arm_arch 5TE;      then echo armv5te
4808         elif check_arm_arch 5TEJ;     then echo armv5te
4809         elif check_arm_arch 6;        then echo armv6
4810         elif check_arm_arch 6J;       then echo armv6j
4811         elif check_arm_arch 6K;       then echo armv6k
4812         elif check_arm_arch 6Z;       then echo armv6z
4813         elif check_arm_arch 6KZ;      then echo armv6zk
4814         elif check_arm_arch 6ZK;      then echo armv6zk
4815         elif check_arm_arch 6T2;      then echo armv6t2
4816         elif check_arm_arch 7;        then echo armv7
4817         elif check_arm_arch 7A  7_A;  then echo armv7-a
4818         elif check_arm_arch 7S;       then echo armv7-a
4819         elif check_arm_arch 7R  7_R;  then echo armv7-r
4820         elif check_arm_arch 7M  7_M;  then echo armv7-m
4821         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4822         elif check_arm_arch 8A  8_A;  then echo armv8-a
4823         fi
4824     }
4825
4826     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4827
4828     case $cpu in
4829         armv*)
4830             cpuflags="-march=$cpu"
4831             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4832         ;;
4833         *)
4834             cpuflags="-mcpu=$cpu"
4835             case $cpu in
4836                 cortex-a*)                               subarch=armv7a  ;;
4837                 cortex-r*)                               subarch=armv7r  ;;
4838                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4839                 arm11*)                                  subarch=armv6   ;;
4840                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4841                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4842                 *)                             subarch=$(probe_arm_arch) ;;
4843             esac
4844         ;;
4845     esac
4846
4847     case "$subarch" in
4848         armv5t*)    enable fast_clz                ;;
4849         armv[6-8]*)
4850             enable fast_clz
4851             disabled fast_unaligned || enable fast_unaligned
4852             ;;
4853     esac
4854
4855 elif enabled avr32; then
4856
4857     case $cpu in
4858         ap7[02]0[0-2])
4859             subarch="avr32_ap"
4860             cpuflags="-mpart=$cpu"
4861         ;;
4862         ap)
4863             subarch="avr32_ap"
4864             cpuflags="-march=$cpu"
4865         ;;
4866         uc3[ab]*)
4867             subarch="avr32_uc"
4868             cpuflags="-mcpu=$cpu"
4869         ;;
4870         uc)
4871             subarch="avr32_uc"
4872             cpuflags="-march=$cpu"
4873         ;;
4874     esac
4875
4876 elif enabled bfin; then
4877
4878     cpuflags="-mcpu=$cpu"
4879
4880 elif enabled mips; then
4881
4882     cpuflags="-march=$cpu"
4883
4884     if [ "$cpu" != "generic" ]; then
4885         disable mips32r2
4886         disable mips32r5
4887         disable mips64r2
4888         disable mips32r6
4889         disable mips64r6
4890         disable loongson2
4891         disable loongson3
4892
4893         case $cpu in
4894             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4895                 enable mips32r2
4896                 disable msa
4897             ;;
4898             p5600|i6400|p6600)
4899                 disable mipsdsp
4900                 disable mipsdspr2
4901             ;;
4902             loongson*)
4903                 enable loongson2
4904                 enable loongson3
4905                 enable local_aligned
4906                 enable simd_align_16
4907                 enable fast_64bit
4908                 enable fast_clz
4909                 enable fast_cmov
4910                 enable fast_unaligned
4911                 disable aligned_stack
4912                 disable mipsdsp
4913                 disable mipsdspr2
4914                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4915                 if [ $cc == gcc ]; then
4916                     gcc_version=$(gcc -dumpversion)
4917                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4918                         expensive_optimization_flag=""
4919                     else
4920                         expensive_optimization_flag="-fno-expensive-optimizations"
4921                     fi
4922                 fi
4923                 case $cpu in
4924                     loongson3*)
4925                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4926                     ;;
4927                     loongson2e)
4928                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4929                     ;;
4930                     loongson2f)
4931                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4932                     ;;
4933                 esac
4934             ;;
4935             *)
4936                 # Unknown CPU. Disable everything.
4937                 warn "unknown CPU. Disabling all MIPS optimizations."
4938                 disable mipsfpu
4939                 disable mipsdsp
4940                 disable mipsdspr2
4941                 disable msa
4942                 disable mmi
4943             ;;
4944         esac
4945
4946         case $cpu in
4947             24kc)
4948                 disable mipsfpu
4949                 disable mipsdsp
4950                 disable mipsdspr2
4951             ;;
4952             24kf*)
4953                 disable mipsdsp
4954                 disable mipsdspr2
4955             ;;
4956             24kec|34kc|1004kc)
4957                 disable mipsfpu
4958                 disable mipsdspr2
4959             ;;
4960             24kef*|34kf*|1004kf*)
4961                 disable mipsdspr2
4962             ;;
4963             74kc)
4964                 disable mipsfpu
4965             ;;
4966             p5600)
4967                 enable mips32r5
4968                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4969             ;;
4970             i6400)
4971                 enable mips64r6
4972                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4973             ;;
4974             p6600)
4975                 enable mips64r6
4976                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4977             ;;
4978         esac
4979     else
4980         # We do not disable anything. Is up to the user to disable the unwanted features.
4981         warn 'generic cpu selected'
4982     fi
4983
4984 elif enabled ppc; then
4985
4986     disable ldbrx
4987
4988     case $(tolower $cpu) in
4989         601|ppc601|powerpc601)
4990             cpuflags="-mcpu=601"
4991             disable altivec
4992         ;;
4993         603*|ppc603*|powerpc603*)
4994             cpuflags="-mcpu=603"
4995             disable altivec
4996         ;;
4997         604*|ppc604*|powerpc604*)
4998             cpuflags="-mcpu=604"
4999             disable altivec
5000         ;;
5001         g3|75*|ppc75*|powerpc75*)
5002             cpuflags="-mcpu=750"
5003             disable altivec
5004         ;;
5005         g4|745*|ppc745*|powerpc745*)
5006             cpuflags="-mcpu=7450"
5007             disable vsx
5008         ;;
5009         74*|ppc74*|powerpc74*)
5010             cpuflags="-mcpu=7400"
5011             disable vsx
5012         ;;
5013         g5|970|ppc970|powerpc970)
5014             cpuflags="-mcpu=970"
5015             disable vsx
5016         ;;
5017         power[3-6]*)
5018             cpuflags="-mcpu=$cpu"
5019             disable vsx
5020         ;;
5021         power[7-8]*)
5022             cpuflags="-mcpu=$cpu"
5023         ;;
5024         cell)
5025             cpuflags="-mcpu=cell"
5026             enable ldbrx
5027             disable vsx
5028         ;;
5029         e500mc)
5030             cpuflags="-mcpu=e500mc"
5031             disable altivec
5032         ;;
5033         e500v2)
5034             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5035             disable altivec
5036             disable dcbzl
5037         ;;
5038         e500)
5039             cpuflags="-mcpu=8540 -mhard-float"
5040             disable altivec
5041             disable dcbzl
5042         ;;
5043     esac
5044
5045 elif enabled sparc; then
5046
5047     case $cpu in
5048         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5049             cpuflags="-mcpu=$cpu"
5050         ;;
5051         ultrasparc*|niagara[234])
5052             cpuflags="-mcpu=$cpu"
5053         ;;
5054     esac
5055
5056 elif enabled x86; then
5057
5058     case $cpu in
5059         i[345]86|pentium)
5060             cpuflags="-march=$cpu"
5061             disable i686
5062             disable mmx
5063         ;;
5064         # targets that do NOT support nopl and conditional mov (cmov)
5065         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5066             cpuflags="-march=$cpu"
5067             disable i686
5068         ;;
5069         # targets that do support nopl and conditional mov (cmov)
5070         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5071         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5072         |amdfam10|barcelona|b[dt]ver*|znver*)
5073             cpuflags="-march=$cpu"
5074             enable i686
5075             enable fast_cmov
5076         ;;
5077         # targets that do support conditional mov but on which it's slow
5078         pentium4|pentium4m|prescott|nocona)
5079             cpuflags="-march=$cpu"
5080             enable i686
5081             disable fast_cmov
5082         ;;
5083     esac
5084
5085 fi
5086
5087 if [ "$cpu" != generic ]; then
5088     add_cflags  $cpuflags
5089     add_asflags $cpuflags
5090     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5091 fi
5092
5093 # compiler sanity check
5094 test_exec <<EOF
5095 int main(void){ return 0; }
5096 EOF
5097 if test "$?" != 0; then
5098     echo "$cc is unable to create an executable file."
5099     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5100         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5101         echo "Only do this if you know what cross compiling means."
5102     fi
5103     die "C compiler test failed."
5104 fi
5105
5106 add_cppflags -D_ISOC99_SOURCE
5107 add_cxxflags -D__STDC_CONSTANT_MACROS
5108 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5109
5110 # some compilers silently accept -std=c11, so we also need to check that the
5111 # version macro is defined properly
5112 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5113     add_cflags -std=c11 ||
5114     check_cflags -std=c99
5115
5116 check_cppflags -D_FILE_OFFSET_BITS=64
5117 check_cppflags -D_LARGEFILE_SOURCE
5118
5119 add_host_cppflags -D_ISOC99_SOURCE
5120 check_host_cflags -std=c99
5121 check_host_cflags -Wall
5122 check_host_cflags $host_cflags_speed
5123
5124 check_64bit(){
5125     arch32=$1
5126     arch64=$2
5127     expr=${3:-'sizeof(void *) > 4'}
5128     test_code cc "" "int test[2*($expr) - 1]" &&
5129         subarch=$arch64 || subarch=$arch32
5130     enable $subarch
5131 }
5132
5133 case "$arch" in
5134     aarch64|alpha|ia64)
5135         enabled shared && enable_weak pic
5136     ;;
5137     mips)
5138         check_64bit mips mips64 '_MIPS_SIM > 1'
5139         enabled shared && enable_weak pic
5140     ;;
5141     parisc)
5142         check_64bit parisc parisc64
5143         enabled shared && enable_weak pic
5144     ;;
5145     ppc)
5146         check_64bit ppc ppc64
5147         enabled shared && enable_weak pic
5148     ;;
5149     s390)
5150         check_64bit s390 s390x
5151         enabled shared && enable_weak pic
5152     ;;
5153     sparc)
5154         check_64bit sparc sparc64
5155         enabled shared && enable_weak pic
5156     ;;
5157     x86)
5158         check_64bit x86_32 x86_64
5159         # Treat x32 as x64 for now. Note it also needs pic if shared
5160         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5161             subarch=x86_64 && enable x86_64 && disable x86_32
5162         if enabled x86_64; then
5163             enabled shared && enable_weak pic
5164             objformat=elf64
5165         fi
5166     ;;
5167 esac
5168
5169 # OS specific
5170 case $target_os in
5171     aix)
5172         SHFLAGS=-shared
5173         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5174         enabled shared && add_ldflags -Wl,-brtl
5175         arflags='-Xany -r -c'
5176         striptype=""
5177         ;;
5178     android)
5179         disable symver
5180         enable section_data_rel_ro
5181         add_cflags -fPIE
5182         add_ldexeflags -fPIE -pie
5183         SLIB_INSTALL_NAME='$(SLIBNAME)'
5184         SLIB_INSTALL_LINKS=
5185         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5186         ;;
5187     haiku)
5188         prefix_default="/boot/common"
5189         network_extralibs="-lnetwork"
5190         host_extralibs=
5191         ;;
5192     sunos)
5193         SHFLAGS='-shared -Wl,-h,$$(@F)'
5194         enabled x86 && append SHFLAGS -mimpure-text
5195         network_extralibs="-lsocket -lnsl"
5196         add_cppflags -D__EXTENSIONS__
5197         # When using suncc to build, the Solaris linker will mark
5198         # an executable with each instruction set encountered by
5199         # the Solaris assembler.  As our libraries contain their own
5200         # guards for processor-specific code, instead suppress
5201         # generation of the HWCAPS ELF section on Solaris x86 only.
5202         enabled_all suncc x86 &&
5203             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5204             add_ldflags -Wl,-M,mapfile
5205         nm_default='nm -P -g'
5206         striptype=""
5207         version_script='-M'
5208         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5209         ;;
5210     netbsd)
5211         disable symver
5212         oss_indev_extralibs="-lossaudio"
5213         oss_outdev_extralibs="-lossaudio"
5214         enabled gcc || check_ldflags -Wl,-zmuldefs
5215         ;;
5216     openbsd|bitrig)
5217         disable symver
5218         striptype=""
5219         SHFLAGS='-shared'
5220         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5221         SLIB_INSTALL_LINKS=
5222         oss_indev_extralibs="-lossaudio"
5223         oss_outdev_extralibs="-lossaudio"
5224         ;;
5225     dragonfly)
5226         disable symver
5227         ;;
5228     freebsd)
5229         ;;
5230     bsd/os)
5231         add_extralibs -lpoll -lgnugetopt
5232         strip="strip -d"
5233         ;;
5234     darwin)
5235         enabled ppc && add_asflags -force_cpusubtype_ALL
5236         install_name_dir_default='$(SHLIBDIR)'
5237         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5238         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5239         strip="${strip} -x"
5240         add_ldflags -Wl,-dynamic,-search_paths_first
5241         check_cflags -Werror=partial-availability
5242         SLIBSUF=".dylib"
5243         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5244         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5245         enabled x86_64 && objformat="macho64" || objformat="macho32"
5246         enabled_any pic shared x86_64 ||
5247             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5248         check_headers dispatch/dispatch.h &&
5249             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5250         if test -n "$sysroot"; then
5251             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5252             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5253         fi
5254         version_script='-exported_symbols_list'
5255         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5256         ;;
5257     msys*)
5258         die "Native MSYS builds are discouraged, please use the MINGW environment."
5259         ;;
5260     mingw32*|mingw64*)
5261         target_os=mingw32
5262         LIBTARGET=i386
5263         if enabled x86_64; then
5264             LIBTARGET="i386:x86-64"
5265         elif enabled arm; then
5266             LIBTARGET="arm"
5267         elif enabled aarch64; then
5268             LIBTARGET="arm64"
5269         fi
5270         if enabled shared; then
5271             # Cannot build both shared and static libs when using dllimport.
5272             disable static
5273         fi
5274         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5275         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5276         shlibdir_default="$bindir_default"
5277         SLIBPREF=""
5278         SLIBSUF=".dll"
5279         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5280         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5281         if test_cmd lib.exe -list; then
5282             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5283             if enabled x86_64; then
5284                 LIBTARGET=x64
5285             fi
5286         else
5287             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5288         fi
5289         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5290         SLIB_INSTALL_LINKS=
5291         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5292         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5293         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5294         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5295         enabled x86_64 && objformat="win64" || objformat="win32"
5296         dlltool="${cross_prefix}dlltool"
5297         ranlib=:
5298         enable dos_paths
5299         check_ldflags -Wl,--nxcompat,--dynamicbase
5300         # Lets work around some stupidity in binutils.
5301         # ld will strip relocations from executables even though we need them
5302         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5303         # however ld then forgets what the entry point should be (oops) so we
5304         # have to manually (re)set it.
5305         if enabled x86_32; then
5306             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5307         elif enabled x86_64; then
5308             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5309             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5310             # Set image base >4GB for extra entropy with HEASLR
5311             add_ldexeflags -Wl,--image-base,0x140000000
5312             append SHFLAGS -Wl,--image-base,0x180000000
5313         fi
5314         ;;
5315     win32|win64)
5316         disable symver
5317         if enabled shared; then
5318             # Link to the import library instead of the normal static library
5319             # for shared libs.
5320             LD_LIB='%.lib'
5321             # Cannot build both shared and static libs with MSVC or icl.
5322             disable static
5323         fi
5324         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5325         shlibdir_default="$bindir_default"
5326         SLIBPREF=""
5327         SLIBSUF=".dll"
5328         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5329         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5330         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5331         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5332         SLIB_INSTALL_LINKS=
5333         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5334         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5335         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5336         enabled x86_64 && objformat="win64" || objformat="win32"
5337         ranlib=:
5338         enable dos_paths
5339         ;;
5340     cygwin*)
5341         target_os=cygwin
5342         shlibdir_default="$bindir_default"
5343         SLIBPREF="cyg"
5344         SLIBSUF=".dll"
5345         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5346         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5347         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5348         SLIB_INSTALL_LINKS=
5349         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5350         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5351         enabled x86_64 && objformat="win64" || objformat="win32"
5352         enable dos_paths
5353         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5354         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5355         ;;
5356     *-dos|freedos|opendos)
5357         network_extralibs="-lsocket"
5358         objformat="coff"
5359         enable dos_paths
5360         ;;
5361     linux)
5362         enable section_data_rel_ro
5363         enabled_any arm aarch64 && enable_weak linux_perf
5364         ;;
5365     irix*)
5366         target_os=irix
5367         ranlib="echo ignoring ranlib"
5368         ;;
5369     os/2*)
5370         strip="lxlite -CS"
5371         striptype=""
5372         objformat="aout"
5373         add_cppflags -D_GNU_SOURCE
5374         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5375         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5376         LIBSUF="_s.a"
5377         SLIBPREF=""
5378         SLIBSUF=".dll"
5379         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5380         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5381         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5382             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5383             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5384             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5385             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5386         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5387             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5388         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5389         SLIB_INSTALL_LINKS=
5390         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5391         enable dos_paths
5392         enable_weak os2threads
5393         ;;
5394     gnu/kfreebsd)
5395         add_cppflags -D_BSD_SOURCE
5396         ;;
5397     gnu)
5398         ;;
5399     qnx)
5400         add_cppflags -D_QNX_SOURCE
5401         network_extralibs="-lsocket"
5402         ;;
5403     symbian)
5404         SLIBSUF=".dll"
5405         enable dos_paths
5406         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5407         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5408         add_ldflags -Wl,--target1-abs,--no-undefined \
5409                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5410                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5411         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5412                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5413                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5414         ;;
5415     minix)
5416         ;;
5417     none)
5418         ;;
5419     *)
5420         die "Unknown OS '$target_os'."
5421         ;;
5422 esac
5423
5424 # test if creating links works
5425 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5426 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5427 mkdir "$link_dest"
5428 $ln_s "$link_dest" "$link_name"
5429 touch "$link_dest/test_file"
5430 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5431     # create link to source path
5432     [ -e src ] && rm src
5433     $ln_s "$source_path" src
5434     source_link=src
5435 else
5436     # creating directory links doesn't work
5437     # fall back to using the full source path
5438     source_link="$source_path"
5439 fi
5440 # cleanup
5441 rm -r "$link_dest"
5442 rm -r "$link_name"
5443
5444 # determine libc flavour
5445
5446 probe_libc(){
5447     pfx=$1
5448     pfx_no_=${pfx%_}
5449     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5450     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5451         eval ${pfx}libc_type=uclibc
5452         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5453     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5454         eval ${pfx}libc_type=glibc
5455         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5456     # MinGW headers can be installed on Cygwin, so check for newlib first.
5457     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5458         eval ${pfx}libc_type=newlib
5459         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5460     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5461     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5462         eval ${pfx}libc_type=mingw64
5463         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5464             add_compat msvcrt/snprintf.o
5465             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5466         fi
5467         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5468         eval test \$${pfx_no_}cc_type = "gcc" &&
5469             add_${pfx}cppflags -D__printf__=__gnu_printf__
5470         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5471             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5472         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5473     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5474          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5475         eval ${pfx}libc_type=mingw32
5476         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5477             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5478             die "ERROR: MinGW32 runtime version must be >= 3.15."
5479         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5480         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5481             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5482         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5483             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5484         eval test \$${pfx_no_}cc_type = "gcc" &&
5485             add_${pfx}cppflags -D__printf__=__gnu_printf__
5486         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5487     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5488         eval ${pfx}libc_type=msvcrt
5489         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5490             if [ "$pfx" = host_ ]; then
5491                 add_host_cppflags -Dsnprintf=_snprintf
5492             else
5493                 add_compat strtod.o strtod=avpriv_strtod
5494                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5495                                              _snprintf=avpriv_snprintf  \
5496                                              vsnprintf=avpriv_vsnprintf
5497             fi
5498         fi
5499         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5500         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5501         # 0x601 by default unless something else is set by the user.
5502         # This can easily lead to us detecting functions only present
5503         # in such new versions and producing binaries requiring windows 7.0.
5504         # Therefore explicitly set the default to Vista unless the user has
5505         # set something else on the command line.
5506         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5507         # family. For these cases, configure is free to use any functions
5508         # found in the SDK headers by default. (Alternatively, we could force
5509         # _WIN32_WINNT to 0x0602 in that case.)
5510         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5511             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5512 #ifdef WINAPI_FAMILY
5513 #include <winapifamily.h>
5514 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5515 #error not desktop
5516 #endif
5517 #endif
5518 EOF
5519         if [ "$pfx" = "" ]; then
5520             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5521             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5522         fi
5523     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5524         eval ${pfx}libc_type=klibc
5525     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5526         eval ${pfx}libc_type=bionic
5527     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5528         eval ${pfx}libc_type=solaris
5529         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5530     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5531         eval ${pfx}libc_type=djgpp
5532         add_cppflags -U__STRICT_ANSI__
5533         add_cflags "-include $source_path/compat/djgpp/math.h"
5534         add_compat djgpp/math.o
5535     fi
5536     test_${pfx}cc <<EOF
5537 #include <time.h>
5538 void *v = localtime_r;
5539 EOF
5540 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5541 #include <time.h>
5542 void *v = localtime_r;
5543 EOF
5544
5545     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5546 }
5547
5548 probe_libc
5549 probe_libc host_
5550
5551 # hacks for compiler/libc/os combinations
5552
5553 case $libc_type in
5554     bionic)
5555         add_compat strtod.o strtod=avpriv_strtod
5556         ;;
5557 esac
5558
5559 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5560     add_cppflags '-I\$(SRC_PATH)/compat/float'
5561
5562 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5563
5564 set_default libdir
5565 : ${shlibdir_default:="$libdir"}
5566 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5567
5568 set_default $PATHS_LIST
5569 set_default nm
5570
5571 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5572
5573 enable_weak_pic() {
5574     disabled pic && return
5575     enable pic
5576     add_cppflags -DPIC
5577     case "$target_os" in
5578     mingw*|cygwin*|win*)
5579         ;;
5580     *)
5581         add_cflags -fPIC
5582         add_asflags -fPIC
5583         ;;
5584     esac
5585 }
5586
5587 enabled pic && enable_weak_pic
5588
5589 test_cc <<EOF || die "Symbol mangling check failed."
5590 int ff_extern;
5591 EOF
5592 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5593 extern_prefix=${sym%%ff_extern*}
5594
5595 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5596
5597 for restrict_keyword in restrict __restrict__ __restrict ""; do
5598     test_code cc "" "char * $restrict_keyword p" && break
5599 done
5600
5601 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5602
5603 # The global variable ensures the bits appear unchanged in the object file.
5604 test_cc <<EOF || die "endian test failed"
5605 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5606 EOF
5607 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5608
5609 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5610
5611 if ! enabled ppc64 || enabled bigendian; then
5612     disable vsx
5613 fi
5614
5615 check_gas() {
5616     log "check_gas using '$as' as AS"
5617     # :vararg is used on aarch64, arm and ppc altivec
5618     check_as vararg "
5619 .macro m n, y:vararg=0
5620 \n: .int \y
5621 .endm
5622 m x" || return 1
5623     # .altmacro is only used in arm asm
5624     ! enabled arm || check_as gnu_as ".altmacro"
5625 }
5626
5627 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5628     nogas=:
5629     enabled_any arm aarch64 && nogas=die
5630     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5631     as_noop=-v
5632
5633     case $as_type in
5634         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5635         gcc)  gaspp_as_type=gas ;;
5636         *)    gaspp_as_type=$as_type ;;
5637     esac
5638
5639     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5640
5641     test "${as#*gas-preprocessor.pl}" != "$as" ||
5642     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5643         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5644
5645     if ! check_gas ; then
5646         as=${gas:=$as}
5647         check_gas || \
5648             $nogas "GNU assembler not found, install/update gas-preprocessor"
5649     fi
5650
5651     check_as as_func ".func test
5652                       .endfunc"
5653 fi
5654
5655 check_inline_asm inline_asm_labels '"1:\n"'
5656
5657 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5658
5659 if enabled aarch64; then
5660     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5661     # internal assembler in clang 3.3 does not support this instruction
5662     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5663     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5664
5665     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5666
5667 elif enabled alpha; then
5668
5669     check_cflags -mieee
5670
5671 elif enabled arm; then
5672
5673     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5674     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5675 float func(float a, float b){ return a+b; }
5676 EOF
5677     enabled thumb && check_cflags -mthumb || check_cflags -marm
5678
5679     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5680         :
5681     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5682         :
5683     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5684         case "${cross_prefix:-$cc}" in
5685             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5686             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5687 __asm__ (".eabi_attribute 28, 1");
5688 int main(void) { return 0; }
5689 EOF
5690         esac
5691         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5692     fi
5693
5694     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5695     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5696     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5697     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5698     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5699     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5700     enabled setend  && check_insn setend  'setend be'
5701
5702     [ $target_os = linux ] || [ $target_os = android ] ||
5703         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5704             $ARCH_EXT_LIST_ARM
5705
5706     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5707
5708     check_as as_arch_directive ".arch armv7-a"
5709     check_as as_dn_directive   "ra .dn d0.i16"
5710     check_as as_fpu_directive  ".fpu neon"
5711
5712     # llvm's integrated assembler supports .object_arch from llvm 3.5
5713     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5714         check_as as_object_arch ".object_arch armv4"
5715
5716     # MS armasm fails to assemble our PIC constructs
5717     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5718
5719 elif enabled mips; then
5720
5721     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5722     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5723     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5724
5725     # Enable minimum ISA based on selected options
5726     if enabled mips64; then
5727         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5728         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5729         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5730     else
5731         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5732         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5733         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5734         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5735     fi
5736
5737     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5738     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5739     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5740     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5741     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5742
5743     if enabled bigendian && enabled msa; then
5744         disable msa
5745     fi
5746
5747 elif enabled parisc; then
5748
5749     if enabled gcc; then
5750         case $($cc -dumpversion) in
5751             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5752         esac
5753     fi
5754
5755 elif enabled ppc; then
5756
5757     enable local_aligned
5758
5759     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5760     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5761     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5762     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5763
5764     if enabled altivec; then
5765         check_cflags -maltivec -mabi=altivec
5766
5767         # check if our compiler supports Motorola AltiVec C API
5768         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5769                                     vector signed int v2 = (vector signed int) { 1 };
5770                                     v1 = vec_add(v1, v2);"
5771
5772         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5773     fi
5774
5775     if enabled vsx; then
5776         check_cflags -mvsx &&
5777         check_cc vsx altivec.h "int v[4] = { 0 };
5778                                 vector signed int v1 = vec_vsx_ld(0, v);"
5779     fi
5780
5781     if enabled power8; then
5782         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5783     fi
5784
5785 elif enabled x86; then
5786
5787     check_builtin rdtsc    intrin.h   "__rdtsc()"
5788     check_builtin mm_empty mmintrin.h "_mm_empty()"
5789
5790     enable local_aligned
5791
5792     # check whether EBP is available on x86
5793     # As 'i' is stored on the stack, this program will crash
5794     # if the base pointer is used to access it because the
5795     # base pointer is cleared in the inline assembly code.
5796     check_exec_crash <<EOF && enable ebp_available
5797 volatile int i=0;
5798 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5799 return i;
5800 EOF
5801
5802     # check whether EBX is available on x86
5803     check_inline_asm ebx_available '""::"b"(0)' &&
5804         check_inline_asm ebx_available '"":::"%ebx"'
5805
5806     # check whether xmm clobbers are supported
5807     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5808
5809     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5810         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5811
5812     # check whether binutils is new enough to compile SSSE3/MMXEXT
5813     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5814     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5815
5816     probe_x86asm(){
5817         x86asmexe_probe=$1
5818         if test_cmd $x86asmexe_probe -v; then
5819             x86asmexe=$x86asmexe_probe
5820             x86asm_type=nasm
5821             x86asm_debug="-g -F dwarf"
5822             X86ASMDEP=
5823             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5824         elif test_cmd $x86asmexe_probe --version; then
5825             x86asmexe=$x86asmexe_probe
5826             x86asm_type=yasm
5827             x86asm_debug="-g dwarf2"
5828             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5829             X86ASM_DEPFLAGS=
5830         fi
5831         check_x86asm x86asm "movbe ecx, [5]"
5832     }
5833
5834     if ! disabled_any asm mmx x86asm; then
5835         disable x86asm
5836         for program in $x86asmexe nasm yasm; do
5837             probe_x86asm $program && break
5838         done
5839         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5840         X86ASMFLAGS="-f $objformat"
5841         enabled pic               && append X86ASMFLAGS "-DPIC"
5842         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5843         case "$objformat" in
5844             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5845         esac
5846
5847         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5848         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5849         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5850         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5851         check_x86asm cpunop          "CPU amdnop"
5852     fi
5853
5854     case "$cpu" in
5855         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5856             disable fast_clz
5857         ;;
5858     esac
5859
5860 fi
5861
5862 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5863
5864 check_ldflags -Wl,--as-needed
5865 check_ldflags -Wl,-z,noexecstack
5866
5867 if ! disabled network; then
5868     check_func getaddrinfo $network_extralibs
5869     check_func inet_aton $network_extralibs
5870
5871     check_type netdb.h "struct addrinfo"
5872     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5873     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5874     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5875     check_type poll.h "struct pollfd"
5876     check_type netinet/sctp.h "struct sctp_event_subscribe"
5877     check_struct "sys/socket.h" "struct msghdr" msg_flags
5878     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5879     check_type netinet/in.h "struct sockaddr_in6"
5880     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5881     check_type "sys/types.h sys/socket.h" socklen_t
5882
5883     # Prefer arpa/inet.h over winsock2
5884     if check_headers arpa/inet.h ; then
5885         check_func closesocket
5886     elif check_headers winsock2.h ; then
5887         check_func_headers winsock2.h closesocket -lws2 &&
5888             network_extralibs="-lws2" ||
5889         { check_func_headers winsock2.h closesocket -lws2_32 &&
5890             network_extralibs="-lws2_32"; } || disable winsock2_h network
5891         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5892
5893         check_type ws2tcpip.h socklen_t
5894         check_type ws2tcpip.h "struct addrinfo"
5895         check_type ws2tcpip.h "struct group_source_req"
5896         check_type ws2tcpip.h "struct ip_mreq_source"
5897         check_type ws2tcpip.h "struct ipv6_mreq"
5898         check_type winsock2.h "struct pollfd"
5899         check_struct winsock2.h "struct sockaddr" sa_len
5900         check_type ws2tcpip.h "struct sockaddr_in6"
5901         check_type ws2tcpip.h "struct sockaddr_storage"
5902     else
5903         disable network
5904     fi
5905 fi
5906
5907 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5908 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5909 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5910 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5911 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5912 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5913 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5914
5915 case "$custom_allocator" in
5916     jemalloc)
5917         # jemalloc by default does not use a prefix
5918         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5919     ;;
5920     tcmalloc)
5921         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5922         malloc_prefix=tc_
5923     ;;
5924 esac
5925
5926 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5927 check_func  ${malloc_prefix}memalign            && enable memalign
5928 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5929
5930 check_func  access
5931 check_func_headers stdlib.h arc4random
5932 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5933 check_func  fcntl
5934 check_func  fork
5935 check_func  gethrtime
5936 check_func  getopt
5937 check_func  getrusage
5938 check_func  gettimeofday
5939 check_func  isatty
5940 check_func  mkstemp
5941 check_func  mmap
5942 check_func  mprotect
5943 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5944 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5945 check_func  sched_getaffinity
5946 check_func  setrlimit
5947 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5948 check_func  strerror_r
5949 check_func  sysconf
5950 check_func  sysctl
5951 check_func  usleep
5952
5953 check_func_headers conio.h kbhit
5954 check_func_headers io.h setmode
5955 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5956 check_func_headers mach/mach_time.h mach_absolute_time
5957 check_func_headers stdlib.h getenv
5958 check_func_headers sys/stat.h lstat
5959
5960 check_func_headers windows.h GetProcessAffinityMask
5961 check_func_headers windows.h GetProcessTimes
5962 check_func_headers windows.h GetSystemTimeAsFileTime
5963 check_func_headers windows.h LoadLibrary
5964 check_func_headers windows.h MapViewOfFile
5965 check_func_headers windows.h PeekNamedPipe
5966 check_func_headers windows.h SetConsoleTextAttribute
5967 check_func_headers windows.h SetConsoleCtrlHandler
5968 check_func_headers windows.h Sleep
5969 check_func_headers windows.h VirtualAlloc
5970 check_func_headers glob.h glob
5971 enabled xlib &&
5972     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5973
5974 check_headers direct.h
5975 check_headers dirent.h
5976 check_headers dxgidebug.h
5977 check_headers dxva.h
5978 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5979 check_headers io.h
5980 check_headers linux/perf_event.h
5981 check_headers libcrystalhd/libcrystalhd_if.h
5982 check_headers malloc.h
5983 check_headers net/udplite.h
5984 check_headers poll.h
5985 check_headers sys/param.h
5986 check_headers sys/resource.h
5987 check_headers sys/select.h
5988 check_headers sys/time.h
5989 check_headers sys/un.h
5990 check_headers termios.h
5991 check_headers unistd.h
5992 check_headers valgrind/valgrind.h
5993 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5994 check_headers windows.h
5995 check_headers X11/extensions/XvMClib.h
5996 check_headers asm/types.h
5997
5998 # it seems there are versions of clang in some distros that try to use the
5999 # gcc headers, which explodes for stdatomic
6000 # so we also check that atomics actually work here
6001 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6002
6003 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6004 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6005     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6006 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6007 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6008 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6009
6010 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6011 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6012 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6013
6014 enabled appkit       && check_apple_framework AppKit
6015 enabled audiotoolbox && check_apple_framework AudioToolbox
6016 enabled avfoundation && check_apple_framework AVFoundation
6017 enabled coreimage    && check_apple_framework CoreImage
6018 enabled videotoolbox && check_apple_framework VideoToolbox
6019
6020 check_apple_framework CoreFoundation
6021 check_apple_framework CoreMedia
6022 check_apple_framework CoreVideo
6023
6024 enabled avfoundation && {
6025     disable coregraphics applicationservices
6026     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6027     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6028
6029 enabled videotoolbox && {
6030     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6031     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6032     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6033 }
6034
6035 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6036
6037 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6038 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6039 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6040 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6041 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6042
6043 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6044
6045 if enabled cuda_sdk; then
6046     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6047     enable cuda_nvcc
6048 fi
6049
6050 if ! disabled ffnvcodec; then
6051     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6052     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6053       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6054       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6055       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6056 fi
6057
6058 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6059
6060 if ! disabled w32threads && ! enabled pthreads; then
6061     check_func_headers "windows.h process.h" _beginthreadex &&
6062         check_type "windows.h" CONDITION_VARIABLE &&
6063         check_type "windows.h" INIT_ONCE &&
6064         enable w32threads || disable w32threads
6065     if ! enabled w32threads && enabled winrt; then
6066         check_func_headers "windows.h" CreateThread &&
6067             enable w32threads || disable w32threads
6068     fi
6069 fi
6070
6071 # check for some common methods of building with pthread support
6072 # do this before the optional library checks as some of them require pthreads
6073 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6074     if check_lib pthreads pthread.h pthread_join   -pthread &&
6075        check_lib pthreads pthread.h pthread_create -pthread; then
6076         add_cflags -pthread
6077     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6078          check_lib pthreads pthread.h pthread_create -pthreads; then
6079         add_cflags -pthreads
6080     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6081          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6082         add_cflags -ldl -pthread
6083     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6084          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6085         :
6086     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6087          check_lib pthreads pthread.h pthread_create -lpthread; then
6088         :
6089     elif check_func pthread_join && check_func pthread_create; then
6090         enable pthreads
6091     fi
6092     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6093
6094     if enabled pthreads; then
6095         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6096         check_func pthread_cancel $pthreads_extralibs
6097     fi
6098 fi
6099
6100 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6101                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6102 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6103 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6104
6105 # On some systems dynamic loading requires no extra linker flags
6106 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6107
6108 check_lib libm math.h sin -lm
6109
6110 atan2f_args=2
6111 copysign_args=2
6112 hypot_args=2
6113 ldexpf_args=2
6114 powf_args=2
6115
6116 for func in $MATH_FUNCS; do
6117     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6118 done
6119
6120 for func in $COMPLEX_FUNCS; do
6121     eval check_complexfunc $func \${${func}_args:-1}
6122 done
6123
6124 # these are off by default, so fail if requested and not available
6125 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6126 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6127 enabled decklink          && { require_headers DeckLinkAPI.h &&
6128                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6129 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6130 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6131 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6132 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6133 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6134 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6135 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6136                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6137                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6138 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6139 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6140 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6141 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6142 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6143 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6144                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6145                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6146 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6147 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6148 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6149 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6150 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6151 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6152 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6153                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6154                                  warn "using libfdk without pkg-config"; } }
6155 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"
6156 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6157 enabled fontconfig        && enable libfontconfig
6158 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6159 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6160 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6161 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6162                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6163 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6164                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6165                                done || die "ERROR: libgsm not found"; }
6166 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6167 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6168 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6169 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6170 # While it may appear that require is being used as a pkg-config
6171 # fallback for libmfx, it is actually being used to detect a different
6172 # installation route altogether.  If libmfx is installed via the Intel
6173 # Media SDK or Intel Media Server Studio, these don't come with
6174 # pkg-config support.  Instead, users should make sure that the build
6175 # can find the libraries and headers through other means.
6176 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6177                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6178 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6179 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6180 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6181                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6182 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6183                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6184                                die "ERROR: libnpp not found"; }
6185 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6186 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6187 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6188                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6189                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6190                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6191 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6192 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6193                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6194 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6195 enabled libopus           && {
6196     enabled libopus_decoder && {
6197         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6198     }
6199     enabled libopus_encoder && {
6200         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6201     }
6202 }
6203 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6204 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6205 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6206 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6207 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6208 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6209                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6210 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6211 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6212 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6213 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6214 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6215 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6216 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6217 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6218 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6219 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6220                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6221                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6222 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6223 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6224 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6225 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6226 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6227                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6228
6229 enabled libvpx            && {
6230     enabled libvpx_vp8_decoder && {
6231         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6232             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"
6233     }
6234     enabled libvpx_vp8_encoder && {
6235         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6236             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"
6237     }
6238     enabled libvpx_vp9_decoder && {
6239         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6240             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"
6241     }
6242     enabled libvpx_vp9_encoder && {
6243         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6244             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"
6245     }
6246     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6247         die "libvpx enabled but no supported decoders found"
6248     fi
6249 }
6250
6251 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6252 enabled libwebp           && {
6253     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6254     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6255 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6256                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6257                                  warn "using libx264 without pkg-config"; } } &&
6258                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6259                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6260 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6261                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6262 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6263 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6264 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6265 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6266 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6267 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6268                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6269                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6270 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6271 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6272                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6273                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6274                                die "ERROR: mbedTLS not found"; }
6275 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6276 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6277                                { ! enabled cross_compile &&
6278                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6279                                  add_ldflags -L/opt/vc/lib/ &&
6280                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6281                                die "ERROR: mmal not found" &&
6282                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6283 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6284                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6285                                die "ERROR: openal not found"; } &&
6286                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6287                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6288 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6289                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6290                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6291                                die "ERROR: opencl not found"; } &&
6292                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6293                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6294                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6295 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6296                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6297                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6298                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6299                                die "ERROR: opengl not found."
6300                              }
6301 enabled omx               && require_headers OMX_Core.h
6302 enabled omx_rpi           && { check_headers OMX_Core.h ||
6303                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6304                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6305 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6306                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6307                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6308                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6309                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6310                                die "ERROR: openssl not found"; }
6311 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6312 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6313                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6314                                { enabled libdrm ||
6315                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6316                              }
6317 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6318
6319
6320 if enabled gcrypt; then
6321     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6322     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6323         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6324         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6325         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6326             die "ERROR: gcrypt not found"
6327         add_cflags $gcrypt_cflags
6328     else
6329         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6330     fi
6331 fi
6332
6333 if enabled sdl2; then
6334     SDL2_CONFIG="${cross_prefix}sdl2-config"
6335     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6336     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6337         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6338         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6339         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6340         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6341         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6342             enable sdl2
6343     fi
6344     if test $target_os = "mingw32"; then
6345         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6346     fi
6347 fi
6348
6349 if enabled decklink; then
6350     case $target_os in
6351         mingw32*|mingw64*|win32|win64)
6352             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6353             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6354             ;;
6355     esac
6356 fi
6357
6358 enabled securetransport &&
6359     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6360     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6361         disable securetransport
6362
6363 enabled securetransport &&
6364     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6365
6366 enabled schannel &&
6367     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6368     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6369     schannel_extralibs="-lsecur32" ||
6370         disable schannel
6371
6372 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6373 enabled makeinfo \
6374     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6375     && enable makeinfo_html || disable makeinfo_html
6376 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6377 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6378 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6379 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6380
6381 # check V4L2 codecs available in the API
6382 check_headers linux/fb.h
6383 check_headers linux/videodev2.h
6384 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6385 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6386 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6387 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6388 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6389 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6390 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6391 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6392 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6393 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6394 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6395
6396 check_headers sys/videoio.h
6397 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6398
6399 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6400 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6401 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6402 # w32api 3.12 had it defined wrong
6403 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6404
6405 check_type "dshow.h" IBaseFilter
6406
6407 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6408 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6409     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6410     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6411     check_headers "dev/ic/bt8xx.h"
6412
6413 if check_struct sys/soundcard.h audio_buf_info bytes; then
6414     enable_sanitized sys/soundcard.h
6415 else
6416     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6417     #include <sys/soundcard.h>
6418     audio_buf_info abc;
6419 EOF
6420 fi
6421
6422 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6423     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6424
6425 enabled libjack &&
6426     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6427
6428 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6429
6430 if enabled libcdio; then
6431     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6432     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6433     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6434     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6435     die "ERROR: No usable libcdio/cdparanoia found"
6436 fi
6437
6438 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6439     disable libxcb_shm libxcb_shape libxcb_xfixes
6440
6441 if enabled libxcb; then
6442     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6443     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6444     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6445 fi
6446
6447 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6448
6449 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6450 # the desktop api partition
6451 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6452 #ifdef WINAPI_FAMILY
6453 #include <winapifamily.h>
6454 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6455 #error desktop, not uwp
6456 #else
6457 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6458 #endif
6459 #else
6460 #error no family set
6461 #endif
6462 EOF
6463
6464 enabled vaapi &&
6465     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6466
6467 if enabled vaapi; then
6468     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6469
6470     if enabled xlib; then
6471         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6472     fi
6473
6474     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6475
6476     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6477     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6478     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6479     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6480     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6481     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6482     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6483 fi
6484
6485 if enabled_all opencl libdrm ; then
6486     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6487         enable opencl_drm_beignet
6488     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6489         enable opencl_drm_arm
6490 fi
6491
6492 if enabled_all opencl vaapi ; then
6493     if enabled opencl_drm_beignet ; then
6494         enable opencl_vaapi_beignet
6495     else
6496         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6497             enable opencl_vaapi_intel_media
6498     fi
6499 fi
6500
6501 if enabled_all opencl dxva2 ; then
6502     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6503         enable opencl_dxva2
6504 fi
6505
6506 if enabled_all opencl d3d11va ; then
6507     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6508         enable opencl_d3d11
6509 fi
6510
6511 enabled vdpau &&
6512     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6513
6514 enabled vdpau &&
6515     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6516
6517 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6518
6519 if enabled x86; then
6520     case $target_os in
6521         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6522             ;;
6523         *)
6524             disable ffnvcodec cuvid nvdec nvenc
6525             ;;
6526     esac
6527 elif enabled ppc64 && ! enabled bigendian; then
6528     case $target_os in
6529         linux)
6530             ;;
6531         *)
6532             disable ffnvcodec cuvid nvdec nvenc
6533             ;;
6534     esac
6535 else
6536     disable ffnvcodec cuvid nvdec nvenc
6537 fi
6538
6539 enabled ffnvcodec && enable cuda
6540
6541 enabled nvenc &&
6542     test_cc -I$source_path <<EOF || disable nvenc
6543 #include <ffnvcodec/nvEncodeAPI.h>
6544 NV_ENCODE_API_FUNCTION_LIST flist;
6545 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6546 int main(void) { return 0; }
6547 EOF
6548
6549 enabled amf &&
6550     check_cpp_condition amf "AMF/core/Version.h" \
6551         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6552
6553 # Funny iconv installations are not unusual, so check it after all flags have been set
6554 if enabled libc_iconv; then
6555     check_func_headers iconv.h iconv
6556 elif enabled iconv; then
6557     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6558 fi
6559
6560 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6561
6562 # add some useful compiler flags if supported
6563 check_cflags -Wdeclaration-after-statement
6564 check_cflags -Wall
6565 check_cflags -Wdisabled-optimization
6566 check_cflags -Wpointer-arith
6567 check_cflags -Wredundant-decls
6568 check_cflags -Wwrite-strings
6569 check_cflags -Wtype-limits
6570 check_cflags -Wundef
6571 check_cflags -Wmissing-prototypes
6572 check_cflags -Wno-pointer-to-int-cast
6573 check_cflags -Wstrict-prototypes
6574 check_cflags -Wempty-body
6575
6576 if enabled extra_warnings; then
6577     check_cflags -Wcast-qual
6578     check_cflags -Wextra
6579     check_cflags -Wpedantic
6580 fi
6581
6582 check_disable_warning(){
6583     warning_flag=-W${1#-Wno-}
6584     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6585 }
6586
6587 test_cflags -Werror=unused-command-line-argument &&
6588     append unknown_warning_flags "-Werror=unused-command-line-argument"
6589 test_cflags -Werror=unknown-warning-option &&
6590     append unknown_warning_flags "-Werror=unknown-warning-option"
6591
6592 check_disable_warning -Wno-parentheses
6593 check_disable_warning -Wno-switch
6594 check_disable_warning -Wno-format-zero-length
6595 check_disable_warning -Wno-pointer-sign
6596 check_disable_warning -Wno-unused-const-variable
6597 check_disable_warning -Wno-bool-operation
6598 check_disable_warning -Wno-char-subscripts
6599
6600 check_disable_warning_headers(){
6601     warning_flag=-W${1#-Wno-}
6602     test_cflags $warning_flag && add_cflags_headers $1
6603 }
6604
6605 check_disable_warning_headers -Wno-deprecated-declarations
6606 check_disable_warning_headers -Wno-unused-variable
6607
6608 test_cc <<EOF && enable blocks_extension
6609 void (^block)(void);
6610 EOF
6611
6612 # add some linker flags
6613 check_ldflags -Wl,--warn-common
6614 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6615 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6616 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6617
6618 # add some strip flags
6619 check_stripflags -x
6620
6621 enabled neon_clobber_test &&
6622     check_ldflags -Wl,--wrap,avcodec_open2              \
6623                   -Wl,--wrap,avcodec_decode_audio4      \
6624                   -Wl,--wrap,avcodec_decode_video2      \
6625                   -Wl,--wrap,avcodec_decode_subtitle2   \
6626                   -Wl,--wrap,avcodec_encode_audio2      \
6627                   -Wl,--wrap,avcodec_encode_video2      \
6628                   -Wl,--wrap,avcodec_encode_subtitle    \
6629                   -Wl,--wrap,avcodec_send_packet        \
6630                   -Wl,--wrap,avcodec_receive_packet     \
6631                   -Wl,--wrap,avcodec_send_frame         \
6632                   -Wl,--wrap,avcodec_receive_frame      \
6633                   -Wl,--wrap,swr_convert                \
6634                   -Wl,--wrap,avresample_convert ||
6635     disable neon_clobber_test
6636
6637 enabled xmm_clobber_test &&
6638     check_ldflags -Wl,--wrap,avcodec_open2              \
6639                   -Wl,--wrap,avcodec_decode_audio4      \
6640                   -Wl,--wrap,avcodec_decode_video2      \
6641                   -Wl,--wrap,avcodec_decode_subtitle2   \
6642                   -Wl,--wrap,avcodec_encode_audio2      \
6643                   -Wl,--wrap,avcodec_encode_video2      \
6644                   -Wl,--wrap,avcodec_encode_subtitle    \
6645                   -Wl,--wrap,avcodec_send_packet        \
6646                   -Wl,--wrap,avcodec_receive_packet     \
6647                   -Wl,--wrap,avcodec_send_frame         \
6648                   -Wl,--wrap,avcodec_receive_frame      \
6649                   -Wl,--wrap,swr_convert                \
6650                   -Wl,--wrap,avresample_convert         \
6651                   -Wl,--wrap,sws_scale ||
6652     disable xmm_clobber_test
6653
6654 check_ld "cc" proper_dce <<EOF
6655 extern const int array[512];
6656 static inline int func(void) { return array[0]; }
6657 int main(void) { return 0; }
6658 EOF
6659
6660 if enabled proper_dce; then
6661     echo "X { local: *; };" > $TMPV
6662     if test_ldflags -Wl,${version_script},$TMPV; then
6663         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6664         quotes='""'
6665         test_cc <<EOF && enable symver_asm_label
6666 void ff_foo(void) __asm__ ("av_foo@VERSION");
6667 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6668 EOF
6669         test_cc <<EOF && enable symver_gnu_asm
6670 __asm__(".symver ff_foo,av_foo@VERSION");
6671 void ff_foo(void) {}
6672 EOF
6673     fi
6674 fi
6675
6676 if [ -z "$optflags" ]; then
6677     if enabled small; then
6678         optflags=$cflags_size
6679     elif enabled optimizations; then
6680         optflags=$cflags_speed
6681     else
6682         optflags=$cflags_noopt
6683     fi
6684 fi
6685
6686 if [ -z "$nvccflags" ]; then
6687     nvccflags=$nvccflags_default
6688 fi
6689
6690 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6691     nvccflags="$nvccflags -m64"
6692 else
6693     nvccflags="$nvccflags -m32"
6694 fi
6695
6696 check_optflags(){
6697     check_cflags "$@"
6698     enabled lto && check_ldflags "$@"
6699 }
6700
6701 check_optflags $optflags
6702 check_optflags -fno-math-errno
6703 check_optflags -fno-signed-zeros
6704
6705 if enabled lto; then
6706     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6707     check_cflags  -flto
6708     check_ldflags -flto $cpuflags
6709     disable inline_asm_direct_symbol_refs
6710 fi
6711
6712 enabled ftrapv && check_cflags -ftrapv
6713
6714 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6715 int x;
6716 EOF
6717
6718
6719 if enabled icc; then
6720     # Just warnings, no remarks
6721     check_cflags -w1
6722     # -wd: Disable following warnings
6723     # 144, 167, 556: -Wno-pointer-sign
6724     # 188: enumerated type mixed with another type
6725     # 1292: attribute "foo" ignored
6726     # 1419: external declaration in primary source file
6727     # 10006: ignoring unknown option -fno-signed-zeros
6728     # 10148: ignoring unknown option -Wno-parentheses
6729     # 10156: ignoring option '-W'; no argument required
6730     # 13200: No EMMS instruction before call to function
6731     # 13203: No EMMS instruction before return from function
6732     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6733     # 11030: Warning unknown option --as-needed
6734     # 10156: ignoring option '-export'; no argument required
6735     check_ldflags -wd10156,11030
6736     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6737     enable ebp_available
6738     # The test above does not test linking
6739     enabled lto && disable symver_asm_label
6740     if enabled x86_32; then
6741         icc_version=$($cc -dumpversion)
6742         test ${icc_version%%.*} -ge 11 &&
6743             check_cflags -falign-stack=maintain-16-byte ||
6744             disable aligned_stack
6745     fi
6746 elif enabled gcc; then
6747     check_optflags -fno-tree-vectorize
6748     check_cflags -Werror=format-security
6749     check_cflags -Werror=implicit-function-declaration
6750     check_cflags -Werror=missing-prototypes
6751     check_cflags -Werror=return-type
6752     check_cflags -Werror=vla
6753     check_cflags -Wformat
6754     check_cflags -fdiagnostics-color=auto
6755     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6756     if enabled x86_32; then
6757         case $target_os in
6758         *bsd*)
6759             # BSDs don't guarantee a 16 byte aligned stack, but we can
6760             # request GCC to try to maintain 16 byte alignment throughout
6761             # function calls. Library entry points that might call assembly
6762             # functions align the stack. (The parameter means 2^4 bytes.)
6763             check_cflags -mpreferred-stack-boundary=4
6764             ;;
6765         esac
6766     fi
6767 elif enabled llvm_gcc; then
6768     check_cflags -mllvm -stack-alignment=16
6769 elif enabled clang; then
6770     if enabled x86_32; then
6771         # Clang doesn't support maintaining alignment without assuming the
6772         # same alignment in every function. If 16 byte alignment would be
6773         # enabled, one would also have to either add attribute_align_arg on
6774         # every single entry point into the libraries or enable -mstackrealign
6775         # (doing stack realignment in every single function).
6776         case $target_os in
6777         mingw32|win32|*bsd*)
6778             disable aligned_stack
6779             ;;
6780         *)
6781             check_cflags -mllvm -stack-alignment=16
6782             check_cflags -mstack-alignment=16
6783             ;;
6784         esac
6785     else
6786         check_cflags -mllvm -stack-alignment=16
6787         check_cflags -mstack-alignment=16
6788     fi
6789     check_cflags -Qunused-arguments
6790     check_cflags -Werror=implicit-function-declaration
6791     check_cflags -Werror=missing-prototypes
6792     check_cflags -Werror=return-type
6793 elif enabled cparser; then
6794     add_cflags -Wno-missing-variable-declarations
6795     add_cflags -Wno-empty-statement
6796 elif enabled armcc; then
6797     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6798     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6799     # 2523: use of inline assembly is deprecated
6800     add_cflags -W${armcc_opt},--diag_suppress=2523
6801     add_cflags -W${armcc_opt},--diag_suppress=1207
6802     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6803     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6804     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6805     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6806 elif enabled pathscale; then
6807     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6808     disable inline_asm
6809 elif enabled_any msvc icl; then
6810     enabled x86_32 && disable aligned_stack
6811     enabled_all x86_32 debug && add_cflags -Oy-
6812     enabled debug && add_ldflags -debug
6813     enable pragma_deprecated
6814     if enabled icl; then
6815         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6816         # (correctly) on icl 13.x.
6817         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6818             add_cflags -Qansi-alias
6819         # Some inline asm is not compilable in debug
6820         if enabled debug; then
6821             disable ebp_available
6822             disable ebx_available
6823         fi
6824     fi
6825     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6826     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6827     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6828     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6829     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6830     # MSVC 2013 and newer can handle it fine.
6831     # If this declspec fails, force including stdlib.h before the restrict redefinition
6832     # happens in config.h.
6833     if [ $restrict_keyword != restrict ]; then
6834         test_cc <<EOF || add_cflags -FIstdlib.h
6835 __declspec($restrict_keyword) void *foo(int);
6836 EOF
6837     fi
6838     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6839     # Issue has been fixed in MSVC v19.00.24218.
6840     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6841         check_cflags -d2SSAOptimizer-
6842     # enable utf-8 source processing on VS2015 U2 and newer
6843     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6844         add_cflags -utf-8
6845 fi
6846
6847 for pfx in "" host_; do
6848     varname=${pfx%_}cc_type
6849     eval "type=\$$varname"
6850     if [ "$type" = "msvc" ]; then
6851         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6852 static inline int foo(int a) { return a; }
6853 EOF
6854     fi
6855 done
6856
6857 case $as_type in
6858     clang)
6859         add_asflags -Qunused-arguments
6860     ;;
6861 esac
6862
6863 case $ld_type in
6864     clang)
6865         check_ldflags -Qunused-arguments
6866     ;;
6867 esac
6868
6869 enable frame_thread_encoder
6870
6871 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6872
6873 check_deps $CONFIG_LIST       \
6874            $CONFIG_EXTRA      \
6875            $HAVE_LIST         \
6876            $ALL_COMPONENTS    \
6877
6878 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"
6879 enabled avresample && warn "Building with deprecated library libavresample"
6880
6881 case $target_os in
6882 haiku)
6883     disable memalign
6884     disable posix_memalign
6885     ;;
6886 *-dos|freedos|opendos)
6887     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6888         disable memalign
6889     fi
6890     ;;
6891 esac
6892
6893 flatten_extralibs(){
6894     nested_entries=
6895     list_name=$1
6896     eval list=\$${1}
6897     for entry in $list; do
6898         entry_copy=$entry
6899         resolve entry_copy
6900         flat_entries=
6901         for e in $entry_copy; do
6902             case $e in
6903                 *_extralibs) nested_entries="$nested_entries$e ";;
6904                           *) flat_entries="$flat_entries$e ";;
6905             esac
6906         done
6907         eval $entry="\$flat_entries"
6908     done
6909     append $list_name "$nested_entries"
6910
6911     resolve nested_entries
6912     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6913         flatten_extralibs $list_name
6914     fi
6915 }
6916
6917 flatten_extralibs_wrapper(){
6918     list_name=$1
6919     flatten_extralibs $list_name
6920     unique $list_name
6921     resolve $list_name
6922     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6923     eval printf \''%s'\' \""\$$list_name"\"
6924 }
6925
6926 for linkunit in $LIBRARY_LIST; do
6927     unset current_extralibs
6928     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6929     for comp in ${components}; do
6930         enabled $comp || continue
6931         comp_extralibs="${comp}_extralibs"
6932         append current_extralibs $comp_extralibs
6933     done
6934     eval prepend ${linkunit}_extralibs $current_extralibs
6935 done
6936
6937 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6938     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6939 done
6940
6941 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6942
6943 for thread in $THREADS_LIST; do
6944     if enabled $thread; then
6945         test -n "$thread_type" &&
6946             die "ERROR: Only one thread type must be selected." ||
6947             thread_type="$thread"
6948     fi
6949 done
6950
6951 if disabled stdatomic; then
6952     if enabled atomics_gcc; then
6953         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6954     elif enabled atomics_win32; then
6955         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6956     elif enabled atomics_suncc; then
6957         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6958     elif enabled pthreads; then
6959         add_compat atomics/pthread/stdatomic.o
6960         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6961     else
6962         enabled threads && die "Threading is enabled, but no atomics are available"
6963         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6964     fi
6965 fi
6966
6967 # Check if requested libraries were found.
6968 for lib in $AUTODETECT_LIBS; do
6969     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6970 done
6971
6972 enabled zlib && add_cppflags -DZLIB_CONST
6973
6974 # conditional library dependencies, in any order
6975 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6976 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6977 enabled afir_filter         && prepend avfilter_deps "avcodec"
6978 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6979 enabled aresample_filter    && prepend avfilter_deps "swresample"
6980 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6981 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6982 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6983 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6984 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6985 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6986 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6987 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6988 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6989 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6990 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6991 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6992 enabled pan_filter          && prepend avfilter_deps "swresample"
6993 enabled pp_filter           && prepend avfilter_deps "postproc"
6994 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6995 enabled resample_filter && prepend avfilter_deps "avresample"
6996 enabled sab_filter          && prepend avfilter_deps "swscale"
6997 enabled scale_filter    && prepend avfilter_deps "swscale"
6998 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6999 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7000 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7001 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7002 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7003 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7004 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7005 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7006 enabled spp_filter          && prepend avfilter_deps "avcodec"
7007 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7008 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7009 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7010 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7011
7012 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7013
7014 #FIXME
7015 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7016     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7017
7018 enabled opus_decoder    && prepend avcodec_deps "swresample"
7019
7020 # reorder the items at var $1 to align with the items order at var $2 .
7021 # die if an item at $1 is not at $2 .
7022 reorder_by(){
7023     eval rb_in=\$$1
7024     eval rb_ordered=\$$2
7025
7026     for rb in $rb_in; do
7027         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7028     done
7029
7030     rb_out=
7031     for rb in $rb_ordered; do
7032         is_in $rb $rb_in && rb_out="$rb_out$rb "
7033     done
7034     eval $1=\$rb_out
7035 }
7036
7037 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7038 # within a set of N items, N expansions are enough to expose a cycle.
7039 expand_deps(){
7040     unique ${1}_deps  # required for the early break test.
7041     for dummy in $LIBRARY_LIST; do  # N iteratios
7042         eval deps=\$${1}_deps
7043         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7044         unique ${1}_deps
7045         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7046     done
7047
7048     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7049     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7050 }
7051
7052 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7053 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7054
7055 map 'expand_deps $v' $LIBRARY_LIST
7056
7057 if test "$quiet" != "yes"; then
7058
7059 echo "install prefix            $prefix"
7060 echo "source path               $source_path"
7061 echo "C compiler                $cc"
7062 echo "C library                 $libc_type"
7063 if test "$host_cc" != "$cc"; then
7064     echo "host C compiler           $host_cc"
7065     echo "host C library            $host_libc_type"
7066 fi
7067 echo "ARCH                      $arch ($cpu)"
7068 if test "$build_suffix" != ""; then
7069     echo "build suffix              $build_suffix"
7070 fi
7071 if test "$progs_suffix" != ""; then
7072     echo "progs suffix              $progs_suffix"
7073 fi
7074 if test "$extra_version" != ""; then
7075     echo "version string suffix     $extra_version"
7076 fi
7077 echo "big-endian                ${bigendian-no}"
7078 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7079 if enabled x86; then
7080     echo "standalone assembly       ${x86asm-no}"
7081     echo "x86 assembler             ${x86asmexe}"
7082     echo "MMX enabled               ${mmx-no}"
7083     echo "MMXEXT enabled            ${mmxext-no}"
7084     echo "3DNow! enabled            ${amd3dnow-no}"
7085     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7086     echo "SSE enabled               ${sse-no}"
7087     echo "SSSE3 enabled             ${ssse3-no}"
7088     echo "AESNI enabled             ${aesni-no}"
7089     echo "AVX enabled               ${avx-no}"
7090     echo "AVX2 enabled              ${avx2-no}"
7091     echo "AVX-512 enabled           ${avx512-no}"
7092     echo "XOP enabled               ${xop-no}"
7093     echo "FMA3 enabled              ${fma3-no}"
7094     echo "FMA4 enabled              ${fma4-no}"
7095     echo "i686 features enabled     ${i686-no}"
7096     echo "CMOV is fast              ${fast_cmov-no}"
7097     echo "EBX available             ${ebx_available-no}"
7098     echo "EBP available             ${ebp_available-no}"
7099 fi
7100 if enabled aarch64; then
7101     echo "NEON enabled              ${neon-no}"
7102     echo "VFP enabled               ${vfp-no}"
7103 fi
7104 if enabled arm; then
7105     echo "ARMv5TE enabled           ${armv5te-no}"
7106     echo "ARMv6 enabled             ${armv6-no}"
7107     echo "ARMv6T2 enabled           ${armv6t2-no}"
7108     echo "VFP enabled               ${vfp-no}"
7109     echo "NEON enabled              ${neon-no}"
7110     echo "THUMB enabled             ${thumb-no}"
7111 fi
7112 if enabled mips; then
7113     echo "MIPS FPU enabled          ${mipsfpu-no}"
7114     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7115     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7116     echo "MIPS MSA enabled          ${msa-no}"
7117     echo "LOONGSON MMI enabled      ${mmi-no}"
7118 fi
7119 if enabled ppc; then
7120     echo "AltiVec enabled           ${altivec-no}"
7121     echo "VSX enabled               ${vsx-no}"
7122     echo "POWER8 enabled            ${power8-no}"
7123     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7124     echo "dcbzl available           ${dcbzl-no}"
7125 fi
7126 echo "debug symbols             ${debug-no}"
7127 echo "strip symbols             ${stripping-no}"
7128 echo "optimize for size         ${small-no}"
7129 echo "optimizations             ${optimizations-no}"
7130 echo "static                    ${static-no}"
7131 echo "shared                    ${shared-no}"
7132 echo "postprocessing support    ${postproc-no}"
7133 echo "network support           ${network-no}"
7134 echo "threading support         ${thread_type-no}"
7135 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7136 echo "texi2html enabled         ${texi2html-no}"
7137 echo "perl enabled              ${perl-no}"
7138 echo "pod2man enabled           ${pod2man-no}"
7139 echo "makeinfo enabled          ${makeinfo-no}"
7140 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7141 test -n "$random_seed" &&
7142     echo "random seed               ${random_seed}"
7143 echo
7144
7145 echo "External libraries:"
7146 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7147 echo
7148
7149 echo "External libraries providing hardware acceleration:"
7150 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7151 echo
7152
7153 echo "Libraries:"
7154 print_enabled '' $LIBRARY_LIST | print_in_columns
7155 echo
7156
7157 echo "Programs:"
7158 print_enabled '' $PROGRAM_LIST | print_in_columns
7159 echo
7160
7161 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7162     echo "Enabled ${type}s:"
7163     eval list=\$$(toupper $type)_LIST
7164     print_enabled '_*' $list | print_in_columns
7165     echo
7166 done
7167
7168 if test -n "$ignore_tests"; then
7169     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7170     echo "Ignored FATE tests:"
7171     echo $ignore_tests | print_in_columns
7172     echo
7173 fi
7174
7175 echo "License: $license"
7176
7177 fi # test "$quiet" != "yes"
7178
7179 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7180     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7181         if disabled $cfg; then
7182             varname=${cfg}_disable_reason
7183             eval "warn \"Disabled $cfg because \$$varname\""
7184         fi
7185     done
7186 fi
7187
7188 if test -n "$WARNINGS"; then
7189     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7190     enabled fatal_warnings && exit 1
7191 fi
7192
7193 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7194
7195 esc(){
7196     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7197 }
7198
7199 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7200
7201 enabled stripping || strip="echo skipping strip"
7202 enabled stripping || striptype=""
7203
7204 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7205
7206 cat > ffbuild/config.mak <<EOF
7207 # Automatically generated by configure - do not modify!
7208 ifndef FFMPEG_CONFIG_MAK
7209 FFMPEG_CONFIG_MAK=1
7210 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7211 prefix=$prefix
7212 LIBDIR=\$(DESTDIR)$libdir
7213 SHLIBDIR=\$(DESTDIR)$shlibdir
7214 INCDIR=\$(DESTDIR)$incdir
7215 BINDIR=\$(DESTDIR)$bindir
7216 DATADIR=\$(DESTDIR)$datadir
7217 DOCDIR=\$(DESTDIR)$docdir
7218 MANDIR=\$(DESTDIR)$mandir
7219 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7220 INSTALL_NAME_DIR=$install_name_dir
7221 SRC_PATH=$source_path
7222 SRC_LINK=$source_link
7223 ifndef MAIN_MAKEFILE
7224 SRC_PATH:=\$(SRC_PATH:.%=..%)
7225 endif
7226 CC_IDENT=$cc_ident
7227 ARCH=$arch
7228 INTRINSICS=$intrinsics
7229 EXTERN_PREFIX=$extern_prefix
7230 CC=$cc
7231 CXX=$cxx
7232 AS=$as
7233 OBJCC=$objcc
7234 LD=$ld
7235 DEPCC=$dep_cc
7236 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7237 DEPAS=$as
7238 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7239 X86ASM=$x86asmexe
7240 DEPX86ASM=$x86asmexe
7241 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7242 AR=$ar
7243 ARFLAGS=$arflags
7244 AR_O=$ar_o
7245 AR_CMD=$ar
7246 NM_CMD=$nm
7247 RANLIB=$ranlib
7248 STRIP=$strip
7249 STRIPTYPE=$striptype
7250 NVCC=$nvcc
7251 CP=cp -p
7252 LN_S=$ln_s
7253 CPPFLAGS=$CPPFLAGS
7254 CFLAGS=$CFLAGS
7255 CXXFLAGS=$CXXFLAGS
7256 OBJCFLAGS=$OBJCFLAGS
7257 ASFLAGS=$ASFLAGS
7258 NVCCFLAGS=$nvccflags
7259 AS_C=$AS_C
7260 AS_O=$AS_O
7261 OBJCC_C=$OBJCC_C
7262 OBJCC_E=$OBJCC_E
7263 OBJCC_O=$OBJCC_O
7264 CC_C=$CC_C
7265 CC_E=$CC_E
7266 CC_O=$CC_O
7267 CXX_C=$CXX_C
7268 CXX_O=$CXX_O
7269 NVCC_C=$NVCC_C
7270 NVCC_O=$NVCC_O
7271 LD_O=$LD_O
7272 X86ASM_O=$X86ASM_O
7273 LD_LIB=$LD_LIB
7274 LD_PATH=$LD_PATH
7275 DLLTOOL=$dlltool
7276 WINDRES=$windres
7277 DEPWINDRES=$dep_cc
7278 DOXYGEN=$doxygen
7279 LDFLAGS=$LDFLAGS
7280 LDEXEFLAGS=$LDEXEFLAGS
7281 LDSOFLAGS=$LDSOFLAGS
7282 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7283 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7284 X86ASMFLAGS=$X86ASMFLAGS
7285 BUILDSUF=$build_suffix
7286 PROGSSUF=$progs_suffix
7287 FULLNAME=$FULLNAME
7288 LIBPREF=$LIBPREF
7289 LIBSUF=$LIBSUF
7290 LIBNAME=$LIBNAME
7291 SLIBPREF=$SLIBPREF
7292 SLIBSUF=$SLIBSUF
7293 EXESUF=$EXESUF
7294 EXTRA_VERSION=$extra_version
7295 CCDEP=$CCDEP
7296 CXXDEP=$CXXDEP
7297 CCDEP_FLAGS=$CCDEP_FLAGS
7298 ASDEP=$ASDEP
7299 ASDEP_FLAGS=$ASDEP_FLAGS
7300 X86ASMDEP=$X86ASMDEP
7301 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7302 CC_DEPFLAGS=$CC_DEPFLAGS
7303 AS_DEPFLAGS=$AS_DEPFLAGS
7304 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7305 HOSTCC=$host_cc
7306 HOSTLD=$host_ld
7307 HOSTCFLAGS=$host_cflags
7308 HOSTCPPFLAGS=$host_cppflags
7309 HOSTEXESUF=$HOSTEXESUF
7310 HOSTLDFLAGS=$host_ldflags
7311 HOSTEXTRALIBS=$host_extralibs
7312 DEPHOSTCC=$host_cc
7313 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7314 HOSTCCDEP=$HOSTCCDEP
7315 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7316 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7317 HOSTCC_C=$HOSTCC_C
7318 HOSTCC_O=$HOSTCC_O
7319 HOSTLD_O=$HOSTLD_O
7320 TARGET_EXEC=$target_exec $target_exec_args
7321 TARGET_PATH=$target_path
7322 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7323 CFLAGS-ffplay=${sdl2_cflags}
7324 CFLAGS_HEADERS=$CFLAGS_HEADERS
7325 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7326 EXTRALIBS=$extralibs
7327 COMPAT_OBJS=$compat_objs
7328 INSTALL=$install
7329 LIBTARGET=${LIBTARGET}
7330 SLIBNAME=${SLIBNAME}
7331 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7332 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7333 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7334 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7335 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7336 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7337 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7338 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7339 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7340 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7341 NOREDZONE_FLAGS=$noredzone_flags
7342 LIBFUZZER_PATH=$libfuzzer_path
7343 IGNORE_TESTS=$ignore_tests
7344 EOF
7345
7346 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7347
7348 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7349     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7350 done
7351
7352 cat > $TMPH <<EOF
7353 /* Automatically generated by configure - do not modify! */
7354 #ifndef FFMPEG_CONFIG_H
7355 #define FFMPEG_CONFIG_H
7356 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7357 #define FFMPEG_LICENSE "$(c_escape $license)"
7358 #define CONFIG_THIS_YEAR 2019
7359 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7360 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7361 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7362 #define av_restrict $restrict_keyword
7363 #define EXTERN_PREFIX "${extern_prefix}"
7364 #define EXTERN_ASM ${extern_prefix}
7365 #define BUILDSUF "$build_suffix"
7366 #define SLIBSUF "$SLIBSUF"
7367 #define HAVE_MMX2 HAVE_MMXEXT
7368 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7369 EOF
7370
7371 test -n "$assert_level" &&
7372     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7373
7374 test -n "$malloc_prefix" &&
7375     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7376
7377 if enabled x86asm; then
7378     append config_files $TMPASM
7379     cat > $TMPASM <<EOF
7380 ; Automatically generated by configure - do not modify!
7381 EOF
7382 fi
7383
7384 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7385
7386
7387 mkdir -p doc
7388 mkdir -p tests
7389 mkdir -p tests/api
7390 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7391
7392 print_config ARCH_   "$config_files" $ARCH_LIST
7393 print_config HAVE_   "$config_files" $HAVE_LIST
7394 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7395                                      $CONFIG_EXTRA      \
7396                                      $ALL_COMPONENTS    \
7397
7398 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7399 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7400
7401 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7402 cp_if_changed $TMPH config.h
7403 touch ffbuild/.config
7404
7405 enabled x86asm && cp_if_changed $TMPASM config.asm
7406
7407 cat > $TMPH <<EOF
7408 /* Generated by ffmpeg configure */
7409 #ifndef AVUTIL_AVCONFIG_H
7410 #define AVUTIL_AVCONFIG_H
7411 EOF
7412
7413 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7414
7415 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7416
7417 cp_if_changed $TMPH libavutil/avconfig.h
7418
7419 # full_filter_name_foo=vf_foo
7420 # full_filter_name_bar=asrc_bar
7421 # ...
7422 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7423
7424 # generate the lists of enabled components
7425 print_enabled_components(){
7426     file=$1
7427     struct_name=$2
7428     name=$3
7429     shift 3
7430     echo "static const $struct_name * const $name[] = {" > $TMPH
7431     for c in $*; do
7432         if enabled $c; then
7433             case $name in
7434                 filter_list)
7435                     eval c=\$full_filter_name_${c%_filter}
7436                 ;;
7437                 indev_list)
7438                     c=${c%_indev}_demuxer
7439                 ;;
7440                 outdev_list)
7441                     c=${c%_outdev}_muxer
7442                 ;;
7443             esac
7444             printf "    &ff_%s,\n" $c >> $TMPH
7445         fi
7446     done
7447     if [ "$name" = "filter_list" ]; then
7448         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7449             printf "    &ff_%s,\n" $c >> $TMPH
7450         done
7451     fi
7452     echo "    NULL };" >> $TMPH
7453     cp_if_changed $TMPH $file
7454 }
7455
7456 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7457 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7458 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7459 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7460 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7461 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7462 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7463 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7464 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7465
7466 # Settings for pkg-config files
7467
7468 cat > $TMPH <<EOF
7469 # Automatically generated by configure - do not modify!
7470 shared=$shared
7471 build_suffix=$build_suffix
7472 prefix=$prefix
7473 libdir=$libdir
7474 incdir=$incdir
7475 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7476 source_path=${source_path}
7477 LIBPREF=${LIBPREF}
7478 LIBSUF=${LIBSUF}
7479 extralibs_avutil="$avutil_extralibs"
7480 extralibs_avcodec="$avcodec_extralibs"
7481 extralibs_avformat="$avformat_extralibs"
7482 extralibs_avdevice="$avdevice_extralibs"
7483 extralibs_avfilter="$avfilter_extralibs"
7484 extralibs_avresample="$avresample_extralibs"
7485 extralibs_postproc="$postproc_extralibs"
7486 extralibs_swscale="$swscale_extralibs"
7487 extralibs_swresample="$swresample_extralibs"
7488 EOF
7489
7490 for lib in $LIBRARY_LIST; do
7491     lib_deps="$(eval echo \$${lib}_deps)"
7492     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7493 done
7494
7495 cp_if_changed $TMPH ffbuild/config.sh