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"
2590 cbs_h265_select="cbs"
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 $0 --help for available options."
3842     exit 1
3843 }
3844
3845 print_in_columns() {
3846     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3847     {
3848         num_cols = width > col_width ? int(width / col_width) : 1;
3849         num_rows = int((NF + num_cols-1) / num_cols);
3850         y = x = 1;
3851         for (y = 1; y <= num_rows; y++) {
3852             i = y;
3853             for (x = 1; x <= num_cols; x++) {
3854                 if (i <= NF) {
3855                   line = sprintf("%s%-" col_width "s", line, $i);
3856                 }
3857                 i = i + num_rows;
3858             }
3859             print line; line = "";
3860         }
3861     }' | sed 's/ *$//'
3862 }
3863
3864 show_list() {
3865     suffix=_$1
3866     shift
3867     echo $* | sed s/$suffix//g | print_in_columns
3868     exit 0
3869 }
3870
3871 rand_list(){
3872     IFS=', '
3873     set -- $*
3874     unset IFS
3875     for thing; do
3876         comp=${thing%:*}
3877         prob=${thing#$comp}
3878         prob=${prob#:}
3879         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3880         echo "prob ${prob:-0.5}"
3881         printf '%s\n' $comp
3882     done
3883 }
3884
3885 do_random(){
3886     action=$1
3887     shift
3888     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3889     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3890 }
3891
3892 for opt do
3893     optval="${opt#*=}"
3894     case "$opt" in
3895         --extra-ldflags=*)
3896             add_ldflags $optval
3897         ;;
3898         --extra-ldexeflags=*)
3899             add_ldexeflags $optval
3900         ;;
3901         --extra-ldsoflags=*)
3902             add_ldsoflags $optval
3903         ;;
3904         --extra-ldlibflags=*)
3905             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3906                  "removed in the future. Use --extra-ldsoflags instead."
3907             add_ldsoflags $optval
3908         ;;
3909         --extra-libs=*)
3910             add_extralibs $optval
3911         ;;
3912         --disable-devices)
3913             disable $INDEV_LIST $OUTDEV_LIST
3914         ;;
3915         --enable-debug=*)
3916             debuglevel="$optval"
3917         ;;
3918         --disable-programs)
3919             disable $PROGRAM_LIST
3920         ;;
3921         --disable-everything)
3922             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3923         ;;
3924         --disable-all)
3925             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3926             disable $LIBRARY_LIST $PROGRAM_LIST doc
3927             enable avutil
3928         ;;
3929         --enable-random|--disable-random)
3930             action=${opt%%-random}
3931             do_random ${action#--} $COMPONENT_LIST
3932         ;;
3933         --enable-random=*|--disable-random=*)
3934             action=${opt%%-random=*}
3935             do_random ${action#--} $optval
3936         ;;
3937         --enable-sdl)
3938             enable sdl2
3939         ;;
3940         --enable-*=*|--disable-*=*)
3941             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3942             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3943             eval list=\$$(toupper $thing)_LIST
3944             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3945             list=$(filter "$name" $list)
3946             [ "$list" = "" ] && warn "Option $opt did not match anything"
3947             test $action = enable && warn_if_gets_disabled $list
3948             $action $list
3949         ;;
3950         --enable-yasm|--disable-yasm)
3951             warn "The ${opt} option is only provided for compatibility and will be\n"\
3952                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3953             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3954         ;;
3955         --yasmexe=*)
3956             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3957                  "removed in the future. Use --x86asmexe instead."
3958             x86asmexe="$optval"
3959         ;;
3960         --enable-?*|--disable-?*)
3961             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3962             if is_in $option $COMPONENT_LIST; then
3963                 test $action = disable && action=unset
3964                 eval $action \$$(toupper ${option%s})_LIST
3965             elif is_in $option $CMDLINE_SELECT; then
3966                 $action $option
3967             else
3968                 die_unknown $opt
3969             fi
3970         ;;
3971         --list-*)
3972             NAME="${opt#--list-}"
3973             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3974             NAME=${NAME%s}
3975             eval show_list $NAME \$$(toupper $NAME)_LIST
3976         ;;
3977         --help|-h) show_help
3978         ;;
3979         --quiet|-q) quiet=yes
3980         ;;
3981         --fatal-warnings) enable fatal_warnings
3982         ;;
3983         --libfuzzer=*)
3984             libfuzzer_path="$optval"
3985         ;;
3986         *)
3987             optname="${opt%%=*}"
3988             optname="${optname#--}"
3989             optname=$(echo "$optname" | sed 's/-/_/g')
3990             if is_in $optname $CMDLINE_SET; then
3991                 eval $optname='$optval'
3992             elif is_in $optname $CMDLINE_APPEND; then
3993                 append $optname "$optval"
3994             else
3995                 die_unknown $opt
3996             fi
3997         ;;
3998     esac
3999 done
4000
4001 for e in $env; do
4002     eval "export $e"
4003 done
4004
4005 if disabled autodetect; then
4006
4007     # Unless iconv is explicitely disabled by the user, we still want to probe
4008     # for the iconv from the libc.
4009     disabled iconv || enable libc_iconv
4010
4011     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4012     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4013 fi
4014 # Mark specifically enabled, but normally autodetected libraries as requested.
4015 for lib in $AUTODETECT_LIBS; do
4016     enabled $lib && request $lib
4017 done
4018 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4019 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4020 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4021
4022 disabled logging && logfile=/dev/null
4023
4024 # command line configuration sanity checks
4025
4026 # we need to build at least one lib type
4027 if ! enabled_any static shared; then
4028     cat <<EOF
4029 At least one library type must be built.
4030 Specify --enable-static to build the static libraries or --enable-shared to
4031 build the shared libraries as well. To only build the shared libraries specify
4032 --disable-static in addition to --enable-shared.
4033 EOF
4034     exit 1
4035 fi
4036
4037 die_license_disabled() {
4038     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4039 }
4040
4041 die_license_disabled_gpl() {
4042     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4043 }
4044
4045 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4046 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4047
4048 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4049 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4050
4051 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4052
4053 if enabled nonfree; then
4054     license="nonfree and unredistributable"
4055 elif enabled gplv3; then
4056     license="GPL version 3 or later"
4057 elif enabled lgplv3; then
4058     license="LGPL version 3 or later"
4059 elif enabled gpl; then
4060     license="GPL version 2 or later"
4061 else
4062     license="LGPL version 2.1 or later"
4063 fi
4064
4065 enabled_all gnutls openssl &&
4066     die "GnuTLS and OpenSSL must not be enabled at the same time."
4067
4068 enabled_all gnutls mbedtls &&
4069     die "GnuTLS and mbedTLS must not be enabled at the same time."
4070
4071 enabled_all openssl mbedtls &&
4072     die "OpenSSL and mbedTLS must not be enabled at the same time."
4073
4074 # Disable all the library-specific components if the library itself
4075 # is disabled, see AVCODEC_LIST and following _LIST variables.
4076
4077 disable_components(){
4078     disabled ${1} && disable $(
4079         eval components="\$$(toupper ${1})_COMPONENTS"
4080         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4081     )
4082 }
4083
4084 map 'disable_components $v' $LIBRARY_LIST
4085
4086 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4087 set >> $logfile
4088
4089 test -n "$valgrind" && toolchain="valgrind-memcheck"
4090
4091 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4092     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4093     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4094 }
4095
4096 case "$toolchain" in
4097     *-asan)
4098         cc_default="${toolchain%-asan}"
4099         add_cflags  -fsanitize=address
4100         add_ldflags -fsanitize=address
4101     ;;
4102     *-msan)
4103         cc_default="${toolchain%-msan}"
4104         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4105         add_ldflags -fsanitize=memory
4106     ;;
4107     *-tsan)
4108         cc_default="${toolchain%-tsan}"
4109         add_cflags  -fsanitize=thread
4110         add_ldflags -fsanitize=thread
4111         case "$toolchain" in
4112             gcc-tsan)
4113                 add_cflags  -fPIC
4114                 add_ldflags -fPIC
4115                 ;;
4116         esac
4117     ;;
4118     *-usan)
4119         cc_default="${toolchain%-usan}"
4120         add_cflags  -fsanitize=undefined
4121         add_ldflags -fsanitize=undefined
4122     ;;
4123     valgrind-*)
4124         target_exec_default="valgrind"
4125         case "$toolchain" in
4126             valgrind-massif)
4127                 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"
4128                 ;;
4129             valgrind-memcheck)
4130                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4131                 ;;
4132         esac
4133     ;;
4134     msvc)
4135         # Check whether the current MSVC version needs the C99 converter.
4136         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4137         # support enough of C99 to build ffmpeg. Default to the new
4138         # behaviour if the regexp was unable to match anything, since this
4139         # successfully parses the version number of existing supported
4140         # versions that require the converter (MSVC 2010 and 2012).
4141         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4142         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4143             cc_default="cl.exe"
4144             cxx_default="cl.exe"
4145         else
4146             die "Unsupported MSVC version (2013 or newer required)"
4147         fi
4148         ld_default="$source_path/compat/windows/mslink"
4149         nm_default="dumpbin.exe -symbols"
4150         ar_default="lib.exe"
4151         case "$arch" in
4152         aarch64|arm64)
4153             as_default="armasm64.exe"
4154             ;;
4155         arm*)
4156             as_default="armasm.exe"
4157             ;;
4158         esac
4159         target_os_default="win32"
4160         # Use a relative path for TMPDIR. This makes sure all the
4161         # ffconf temp files are written with a relative path, avoiding
4162         # issues with msys/win32 path conversion for MSVC parameters
4163         # such as -Fo<file> or -out:<file>.
4164         TMPDIR=.
4165     ;;
4166     icl)
4167         cc_default="icl"
4168         ld_default="xilink"
4169         nm_default="dumpbin -symbols"
4170         ar_default="xilib"
4171         target_os_default="win32"
4172         TMPDIR=.
4173     ;;
4174     gcov)
4175         add_cflags  -fprofile-arcs -ftest-coverage
4176         add_ldflags -fprofile-arcs -ftest-coverage
4177     ;;
4178     llvm-cov)
4179         add_cflags -fprofile-arcs -ftest-coverage
4180         add_ldflags --coverage
4181     ;;
4182     hardened)
4183         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4184         add_cflags   -fno-strict-overflow -fstack-protector-all
4185         add_ldflags  -Wl,-z,relro -Wl,-z,now
4186         add_cflags   -fPIE
4187         add_ldexeflags -fPIE -pie
4188     ;;
4189     ?*)
4190         die "Unknown toolchain $toolchain"
4191     ;;
4192 esac
4193
4194 if test -n "$cross_prefix"; then
4195     test -n "$arch" && test -n "$target_os" ||
4196         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4197     enable cross_compile
4198 fi
4199
4200 set_default target_os
4201 if test "$target_os" = android; then
4202     cc_default="clang"
4203 fi
4204
4205 ar_default="${cross_prefix}${ar_default}"
4206 cc_default="${cross_prefix}${cc_default}"
4207 cxx_default="${cross_prefix}${cxx_default}"
4208 nm_default="${cross_prefix}${nm_default}"
4209 pkg_config_default="${cross_prefix}${pkg_config_default}"
4210 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4211     ranlib_default="${cross_prefix}${ranlib_default} -D"
4212 else
4213     ranlib_default="${cross_prefix}${ranlib_default}"
4214 fi
4215 strip_default="${cross_prefix}${strip_default}"
4216 windres_default="${cross_prefix}${windres_default}"
4217
4218 sysinclude_default="${sysroot}/usr/include"
4219
4220 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4221     target_exec x86asmexe nvcc
4222 enabled cross_compile || host_cc_default=$cc
4223 set_default host_cc
4224
4225 pkg_config_fail_message=""
4226 if ! $pkg_config --version >/dev/null 2>&1; then
4227     warn "$pkg_config not found, library detection may fail."
4228     pkg_config=false
4229 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4230     pkg_config_fail_message="
4231 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4232 fi
4233
4234 if test $doxygen != $doxygen_default && \
4235   ! $doxygen --version >/dev/null 2>&1; then
4236     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4237 fi
4238
4239 exesuf() {
4240     case $1 in
4241         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4242     esac
4243 }
4244
4245 EXESUF=$(exesuf $target_os)
4246 HOSTEXESUF=$(exesuf $host_os)
4247
4248 # set temporary file name
4249 : ${TMPDIR:=$TEMPDIR}
4250 : ${TMPDIR:=$TMP}
4251 : ${TMPDIR:=/tmp}
4252
4253 if [ -n "$tempprefix" ] ; then
4254     mktemp(){
4255         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4256         echo "$tmpname"
4257         mkdir "$tmpname"
4258     }
4259 elif ! test_cmd mktemp -u XXXXXX; then
4260     # simple replacement for missing mktemp
4261     # NOT SAFE FOR GENERAL USE
4262     mktemp(){
4263         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4264         echo "$tmpname"
4265         mkdir "$tmpname"
4266     }
4267 fi
4268
4269 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4270     die "Unable to create temporary directory in $TMPDIR."
4271
4272 tmpfile(){
4273     tmp="${FFTMPDIR}/test"$2
4274     (set -C; exec > $tmp) 2> /dev/null ||
4275         die "Unable to create temporary file in $FFTMPDIR."
4276     eval $1=$tmp
4277 }
4278
4279 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4280 trap 'exit 2' INT
4281
4282 tmpfile TMPASM .asm
4283 tmpfile TMPC   .c
4284 tmpfile TMPCPP .cpp
4285 tmpfile TMPE   $EXESUF
4286 tmpfile TMPH   .h
4287 tmpfile TMPM   .m
4288 tmpfile TMPCU  .cu
4289 tmpfile TMPO   .o
4290 tmpfile TMPS   .S
4291 tmpfile TMPSH  .sh
4292 tmpfile TMPV   .ver
4293
4294 unset -f mktemp
4295
4296 chmod +x $TMPE
4297
4298 # make sure we can execute files in $TMPDIR
4299 cat > $TMPSH 2>> $logfile <<EOF
4300 #! /bin/sh
4301 EOF
4302 chmod +x $TMPSH >> $logfile 2>&1
4303 if ! $TMPSH >> $logfile 2>&1; then
4304     cat <<EOF
4305 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4306 variable to another directory and make sure that it is not mounted noexec.
4307 EOF
4308     die "Sanity test failed."
4309 fi
4310
4311 armasm_flags(){
4312     for flag; do
4313         case $flag in
4314             # Filter out MSVC cl.exe options from cflags that shouldn't
4315             # be passed to gas-preprocessor
4316             -M[TD]*)                                            ;;
4317             *)                  echo $flag                      ;;
4318         esac
4319    done
4320 }
4321
4322 cparser_flags(){
4323     for flag; do
4324         case $flag in
4325             -Wno-switch)             echo -Wno-switch-enum ;;
4326             -Wno-format-zero-length) ;;
4327             -Wdisabled-optimization) ;;
4328             -Wno-pointer-sign)       echo -Wno-other ;;
4329             *)                       echo $flag ;;
4330         esac
4331     done
4332 }
4333
4334 msvc_common_flags(){
4335     for flag; do
4336         case $flag in
4337             # In addition to specifying certain flags under the compiler
4338             # specific filters, they must be specified here as well or else the
4339             # generic catch all at the bottom will print the original flag.
4340             -Wall)                ;;
4341             -Wextra)              ;;
4342             -std=c99)             ;;
4343             # Common flags
4344             -fomit-frame-pointer) ;;
4345             -g)                   echo -Z7 ;;
4346             -fno-math-errno)      ;;
4347             -fno-common)          ;;
4348             -fno-signed-zeros)    ;;
4349             -fPIC)                ;;
4350             -mthumb)              ;;
4351             -march=*)             ;;
4352             -lz)                  echo zlib.lib ;;
4353             -lx264)               echo libx264.lib ;;
4354             -lstdc++)             ;;
4355             -l*)                  echo ${flag#-l}.lib ;;
4356             -LARGEADDRESSAWARE)   echo $flag ;;
4357             -L*)                  echo -libpath:${flag#-L} ;;
4358             *)                    echo $flag ;;
4359         esac
4360     done
4361 }
4362
4363 msvc_flags(){
4364     msvc_common_flags "$@"
4365     for flag; do
4366         case $flag in
4367             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4368                                        -wd4554 ;;
4369             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4370                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4371                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4372                                        -wd4307 \
4373                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4374         esac
4375     done
4376 }
4377
4378 icl_flags(){
4379     msvc_common_flags "$@"
4380     for flag; do
4381         case $flag in
4382             # Despite what Intel's documentation says -Wall, which is supported
4383             # on Windows, does enable remarks so disable them here.
4384             -Wall)                echo $flag -Qdiag-disable:remark ;;
4385             -std=c99)             echo -Qstd=c99 ;;
4386             -flto)                echo -ipo ;;
4387         esac
4388     done
4389 }
4390
4391 icc_flags(){
4392     for flag; do
4393         case $flag in
4394             -flto)                echo -ipo ;;
4395             *)                    echo $flag ;;
4396         esac
4397     done
4398 }
4399
4400 suncc_flags(){
4401     for flag; do
4402         case $flag in
4403             -march=*|-mcpu=*)
4404                 case "${flag#*=}" in
4405                     native)                   echo -xtarget=native       ;;
4406                     v9|niagara)               echo -xarch=sparc          ;;
4407                     ultrasparc)               echo -xarch=sparcvis       ;;
4408                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4409                     i586|pentium)             echo -xchip=pentium        ;;
4410                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4411                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4412                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4413                     pentium4*)          echo -xtarget=pentium4           ;;
4414                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4415                     *-sse3)             echo -xarch=sse3                 ;;
4416                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4417                     bonnell)                   echo -xarch=ssse3         ;;
4418                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4419                     westmere)                  echo -xtarget=westmere    ;;
4420                     silvermont)                echo -xarch=sse4_2        ;;
4421                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4422                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4423                                                echo -xarch=avx           ;;
4424                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4425                     btver1)                    echo -xarch=amdsse4a      ;;
4426                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4427                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4428                     k8|opteron|athlon64|athlon-fx)
4429                                                echo -xarch=sse2a         ;;
4430                     athlon*)                   echo -xarch=pentium_proa  ;;
4431                 esac
4432                 ;;
4433             -std=c99)             echo -xc99              ;;
4434             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4435             -fPIC)                echo -KPIC -xcode=pic32 ;;
4436             -W*,*)                echo $flag              ;;
4437             -f*-*|-W*|-mimpure-text)                      ;;
4438             -shared)              echo -G                 ;;
4439             *)                    echo $flag              ;;
4440         esac
4441     done
4442 }
4443
4444 probe_cc(){
4445     pfx=$1
4446     _cc=$2
4447     first=$3
4448
4449     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4450     unset _ld_o _ldflags _ld_lib _ld_path
4451     unset _depflags _DEPCMD _DEPFLAGS
4452     _flags_filter=echo
4453
4454     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4455         true # no-op to avoid reading stdin in following checks
4456     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4457         _type=llvm_gcc
4458         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4459         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4460         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4461         _cflags_speed='-O3'
4462         _cflags_size='-Os'
4463     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4464         _type=gcc
4465         gcc_version=$($_cc --version | head -n1)
4466         gcc_basever=$($_cc -dumpversion)
4467         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4468         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4469         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4470         case $gcc_basever in
4471             2) ;;
4472             2.*) ;;
4473             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4474         esac
4475         if [ "$first" = true ]; then
4476             case $gcc_basever in
4477                 4.2*)
4478                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4479             esac
4480         fi
4481         _cflags_speed='-O3'
4482         _cflags_size='-Os'
4483     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4484         _type=icc
4485         _ident=$($_cc --version | head -n1)
4486         _depflags='-MMD'
4487         _cflags_speed='-O3'
4488         _cflags_size='-Os'
4489         _cflags_noopt='-O1'
4490         _flags_filter=icc_flags
4491     elif $_cc -v 2>&1 | grep -q xlc; then
4492         _type=xlc
4493         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4494         _cflags_speed='-O5'
4495         _cflags_size='-O5 -qcompact'
4496     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4497         test -d "$sysroot" || die "No valid sysroot specified."
4498         _type=armcc
4499         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4500         armcc_conf="$PWD/armcc.conf"
4501         $_cc --arm_linux_configure                 \
4502              --arm_linux_config_file="$armcc_conf" \
4503              --configure_sysroot="$sysroot"        \
4504              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4505              die "Error creating armcc configuration file."
4506         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4507         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4508         as_default="${cross_prefix}gcc"
4509         _depflags='-MMD'
4510         _cflags_speed='-O3'
4511         _cflags_size='-Os'
4512     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4513         _type=clang
4514         _ident=$($_cc --version 2>/dev/null | head -n1)
4515         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4516         _cflags_speed='-O3'
4517         _cflags_size='-Oz'
4518     elif $_cc -V 2>&1 | grep -q Sun; then
4519         _type=suncc
4520         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4521         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4522         _DEPFLAGS='-xM1 -xc99'
4523         _ldflags='-std=c99'
4524         _cflags_speed='-O5'
4525         _cflags_size='-O5 -xspace'
4526         _flags_filter=suncc_flags
4527     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4528         _type=pathscale
4529         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4530         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4531         _cflags_speed='-O2'
4532         _cflags_size='-Os'
4533         _flags_filter='filter_out -Wdisabled-optimization'
4534     elif $_cc -v 2>&1 | grep -q Open64; then
4535         _type=open64
4536         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4537         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4538         _cflags_speed='-O2'
4539         _cflags_size='-Os'
4540         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4541     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4542         _type=armasm
4543         _ident=$($_cc | head -n1)
4544         # 4509: "This form of conditional instruction is deprecated"
4545         _flags="-nologo -ignore 4509"
4546         _flags_filter=armasm_flags
4547     elif $_cc 2>&1 | grep -q Intel; then
4548         _type=icl
4549         _ident=$($_cc 2>&1 | head -n1)
4550         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4551         # Not only is O3 broken on 13.x+ but it is slower on all previous
4552         # versions (tested) as well.
4553         _cflags_speed="-O2"
4554         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4555         if $_cc 2>&1 | grep -q Linker; then
4556             _ld_o='-out:$@'
4557         else
4558             _ld_o='-Fe$@'
4559         fi
4560         _cc_o='-Fo$@'
4561         _cc_e='-P'
4562         _flags_filter=icl_flags
4563         _ld_lib='lib%.a'
4564         _ld_path='-libpath:'
4565         # -Qdiag-error to make icl error when seeing certain unknown arguments
4566         _flags='-nologo -Qdiag-error:4044,10157'
4567         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4568         # with MSVC which enables it by default.
4569         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4570         disable stripping
4571     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4572         # lld can emulate multiple different linkers; in ms link.exe mode,
4573         # the -? parameter gives the help output which contains an identifyable
4574         # string, while it gives an error in other modes.
4575         _type=lld-link
4576         # The link.exe mode doesn't have a switch for getting the version,
4577         # but we can force it back to gnu mode and get the version from there.
4578         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4579         _ld_o='-out:$@'
4580         _flags_filter=msvc_flags
4581         _ld_lib='lib%.a'
4582         _ld_path='-libpath:'
4583     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4584         _type=msvc
4585         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4586         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4587         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4588         _cflags_speed="-O2"
4589         _cflags_size="-O1"
4590         _cflags_noopt="-O1"
4591         if $_cc -nologo- 2>&1 | grep -q Linker; then
4592             _ld_o='-out:$@'
4593         else
4594             _ld_o='-Fe$@'
4595         fi
4596         _cc_o='-Fo$@'
4597         _cc_e='-P -Fi$@'
4598         _flags_filter=msvc_flags
4599         _ld_lib='lib%.a'
4600         _ld_path='-libpath:'
4601         _flags='-nologo'
4602         disable stripping
4603     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4604         _type=cparser
4605         _ident=$($_cc --version | head -n1)
4606         _depflags='-MMD'
4607         _cflags_speed='-O4'
4608         _cflags_size='-O2'
4609         _flags_filter=cparser_flags
4610     fi
4611
4612     eval ${pfx}_type=\$_type
4613     eval ${pfx}_ident=\$_ident
4614 }
4615
4616 set_ccvars(){
4617     eval ${1}_C=\${_cc_c-\${${1}_C}}
4618     eval ${1}_E=\${_cc_e-\${${1}_E}}
4619     eval ${1}_O=\${_cc_o-\${${1}_O}}
4620
4621     if [ -n "$_depflags" ]; then
4622         eval ${1}_DEPFLAGS=\$_depflags
4623     else
4624         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4625         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4626         eval DEP${1}FLAGS=\$_flags
4627     fi
4628 }
4629
4630 probe_cc cc "$cc" "true"
4631 cflags_filter=$_flags_filter
4632 cflags_speed=$_cflags_speed
4633 cflags_size=$_cflags_size
4634 cflags_noopt=$_cflags_noopt
4635 add_cflags $_flags $_cflags
4636 cc_ldflags=$_ldflags
4637 set_ccvars CC
4638 set_ccvars CXX
4639
4640 probe_cc hostcc "$host_cc"
4641 host_cflags_filter=$_flags_filter
4642 host_cflags_speed=$_cflags_speed
4643 add_host_cflags  $_flags $_cflags
4644 set_ccvars HOSTCC
4645
4646 test -n "$cc_type" && enable $cc_type ||
4647     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4648
4649 : ${as_default:=$cc}
4650 : ${objcc_default:=$cc}
4651 : ${dep_cc_default:=$cc}
4652 : ${ld_default:=$cc}
4653 : ${host_ld_default:=$host_cc}
4654 set_default ar as objcc dep_cc ld ln_s host_ld windres
4655
4656 probe_cc as "$as"
4657 asflags_filter=$_flags_filter
4658 add_asflags $_flags $_cflags
4659 set_ccvars AS
4660
4661 probe_cc objcc "$objcc"
4662 objcflags_filter=$_flags_filter
4663 add_objcflags $_flags $_cflags
4664 set_ccvars OBJC
4665
4666 probe_cc ld "$ld"
4667 ldflags_filter=$_flags_filter
4668 add_ldflags $_flags $_ldflags
4669 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4670 LD_O=${_ld_o-$LD_O}
4671 LD_LIB=${_ld_lib-$LD_LIB}
4672 LD_PATH=${_ld_path-$LD_PATH}
4673
4674 probe_cc hostld "$host_ld"
4675 host_ldflags_filter=$_flags_filter
4676 add_host_ldflags $_flags $_ldflags
4677 HOSTLD_O=${_ld_o-$HOSTLD_O}
4678
4679 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4680     probe_cc depcc "$dep_cc"
4681     CCDEP=${_DEPCMD:-$DEPCMD}
4682     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4683     DEPCCFLAGS=$_flags
4684 fi
4685
4686 if $ar 2>&1 | grep -q Microsoft; then
4687     arflags="-nologo"
4688     ar_o='-out:$@'
4689 elif $ar 2>&1 | grep -q "\[D\] "; then
4690     arflags="rcD"
4691     ar_o='$@'
4692 else
4693     arflags="rc"
4694     ar_o='$@'
4695 fi
4696
4697 add_cflags $extra_cflags
4698 add_cxxflags $extra_cxxflags
4699 add_objcflags $extra_objcflags
4700 add_asflags $extra_cflags
4701
4702 if test -n "$sysroot"; then
4703     case "$cc_type" in
4704         gcc|llvm_gcc|clang)
4705             add_cppflags --sysroot="$sysroot"
4706             add_ldflags --sysroot="$sysroot"
4707         ;;
4708     esac
4709 fi
4710
4711 if test "$cpu" = host; then
4712     enabled cross_compile &&
4713         die "--cpu=host makes no sense when cross-compiling."
4714
4715     case "$cc_type" in
4716         gcc|llvm_gcc)
4717             check_native(){
4718                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4719                 sed -n "/cc1.*$1=/{
4720                             s/.*$1=\\([^ ]*\\).*/\\1/
4721                             p
4722                             q
4723                         }" $TMPE
4724             }
4725             cpu=$(check_native -march || check_native -mcpu)
4726         ;;
4727         clang)
4728             check_native(){
4729                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4730                 sed -n "/cc1.*-target-cpu /{
4731                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4732                             p
4733                             q
4734                         }" $TMPE
4735             }
4736             cpu=$(check_native -march)
4737         ;;
4738     esac
4739
4740     test "${cpu:-host}" = host &&
4741         die "--cpu=host not supported with compiler $cc"
4742 fi
4743
4744 # Deal with common $arch aliases
4745 case "$arch" in
4746     aarch64|arm64)
4747         arch="aarch64"
4748     ;;
4749     arm*|iPad*|iPhone*)
4750         arch="arm"
4751     ;;
4752     mips*|IP*)
4753         case "$arch" in
4754         *el)
4755             add_cppflags -EL
4756             add_ldflags -EL
4757         ;;
4758         *eb)
4759             add_cppflags -EB
4760             add_ldflags -EB
4761         ;;
4762         esac
4763         arch="mips"
4764     ;;
4765     parisc*|hppa*)
4766         arch="parisc"
4767     ;;
4768     "Power Macintosh"|ppc*|powerpc*)
4769         arch="ppc"
4770     ;;
4771     s390|s390x)
4772         arch="s390"
4773     ;;
4774     sh4|sh)
4775         arch="sh4"
4776     ;;
4777     sun4*|sparc*)
4778         arch="sparc"
4779     ;;
4780     tilegx|tile-gx)
4781         arch="tilegx"
4782     ;;
4783     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4784         arch="x86"
4785     ;;
4786 esac
4787
4788 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4789 enable $arch
4790
4791 # Add processor-specific flags
4792 if enabled aarch64; then
4793
4794     case $cpu in
4795         armv*)
4796             cpuflags="-march=$cpu"
4797         ;;
4798         *)
4799             cpuflags="-mcpu=$cpu"
4800         ;;
4801     esac
4802
4803 elif enabled alpha; then
4804
4805     cpuflags="-mcpu=$cpu"
4806
4807 elif enabled arm; then
4808
4809     check_arm_arch() {
4810         test_cpp_condition stddef.h \
4811             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4812             $cpuflags
4813     }
4814
4815     probe_arm_arch() {
4816         if   check_arm_arch 4;        then echo armv4
4817         elif check_arm_arch 4T;       then echo armv4t
4818         elif check_arm_arch 5;        then echo armv5
4819         elif check_arm_arch 5E;       then echo armv5e
4820         elif check_arm_arch 5T;       then echo armv5t
4821         elif check_arm_arch 5TE;      then echo armv5te
4822         elif check_arm_arch 5TEJ;     then echo armv5te
4823         elif check_arm_arch 6;        then echo armv6
4824         elif check_arm_arch 6J;       then echo armv6j
4825         elif check_arm_arch 6K;       then echo armv6k
4826         elif check_arm_arch 6Z;       then echo armv6z
4827         elif check_arm_arch 6KZ;      then echo armv6zk
4828         elif check_arm_arch 6ZK;      then echo armv6zk
4829         elif check_arm_arch 6T2;      then echo armv6t2
4830         elif check_arm_arch 7;        then echo armv7
4831         elif check_arm_arch 7A  7_A;  then echo armv7-a
4832         elif check_arm_arch 7S;       then echo armv7-a
4833         elif check_arm_arch 7R  7_R;  then echo armv7-r
4834         elif check_arm_arch 7M  7_M;  then echo armv7-m
4835         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4836         elif check_arm_arch 8A  8_A;  then echo armv8-a
4837         fi
4838     }
4839
4840     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4841
4842     case $cpu in
4843         armv*)
4844             cpuflags="-march=$cpu"
4845             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4846         ;;
4847         *)
4848             cpuflags="-mcpu=$cpu"
4849             case $cpu in
4850                 cortex-a*)                               subarch=armv7a  ;;
4851                 cortex-r*)                               subarch=armv7r  ;;
4852                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4853                 arm11*)                                  subarch=armv6   ;;
4854                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4855                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4856                 *)                             subarch=$(probe_arm_arch) ;;
4857             esac
4858         ;;
4859     esac
4860
4861     case "$subarch" in
4862         armv5t*)    enable fast_clz                ;;
4863         armv[6-8]*)
4864             enable fast_clz
4865             disabled fast_unaligned || enable fast_unaligned
4866             ;;
4867     esac
4868
4869 elif enabled avr32; then
4870
4871     case $cpu in
4872         ap7[02]0[0-2])
4873             subarch="avr32_ap"
4874             cpuflags="-mpart=$cpu"
4875         ;;
4876         ap)
4877             subarch="avr32_ap"
4878             cpuflags="-march=$cpu"
4879         ;;
4880         uc3[ab]*)
4881             subarch="avr32_uc"
4882             cpuflags="-mcpu=$cpu"
4883         ;;
4884         uc)
4885             subarch="avr32_uc"
4886             cpuflags="-march=$cpu"
4887         ;;
4888     esac
4889
4890 elif enabled bfin; then
4891
4892     cpuflags="-mcpu=$cpu"
4893
4894 elif enabled mips; then
4895
4896     cpuflags="-march=$cpu"
4897
4898     if [ "$cpu" != "generic" ]; then
4899         disable mips32r2
4900         disable mips32r5
4901         disable mips64r2
4902         disable mips32r6
4903         disable mips64r6
4904         disable loongson2
4905         disable loongson3
4906
4907         case $cpu in
4908             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4909                 enable mips32r2
4910                 disable msa
4911             ;;
4912             p5600|i6400|p6600)
4913                 disable mipsdsp
4914                 disable mipsdspr2
4915             ;;
4916             loongson*)
4917                 enable loongson2
4918                 enable loongson3
4919                 enable local_aligned
4920                 enable simd_align_16
4921                 enable fast_64bit
4922                 enable fast_clz
4923                 enable fast_cmov
4924                 enable fast_unaligned
4925                 disable aligned_stack
4926                 disable mipsdsp
4927                 disable mipsdspr2
4928                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4929                 if [ $cc == gcc ]; then
4930                     gcc_version=$(gcc -dumpversion)
4931                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4932                         expensive_optimization_flag=""
4933                     else
4934                         expensive_optimization_flag="-fno-expensive-optimizations"
4935                     fi
4936                 fi
4937                 case $cpu in
4938                     loongson3*)
4939                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4940                     ;;
4941                     loongson2e)
4942                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4943                     ;;
4944                     loongson2f)
4945                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4946                     ;;
4947                 esac
4948             ;;
4949             *)
4950                 # Unknown CPU. Disable everything.
4951                 warn "unknown CPU. Disabling all MIPS optimizations."
4952                 disable mipsfpu
4953                 disable mipsdsp
4954                 disable mipsdspr2
4955                 disable msa
4956                 disable mmi
4957             ;;
4958         esac
4959
4960         case $cpu in
4961             24kc)
4962                 disable mipsfpu
4963                 disable mipsdsp
4964                 disable mipsdspr2
4965             ;;
4966             24kf*)
4967                 disable mipsdsp
4968                 disable mipsdspr2
4969             ;;
4970             24kec|34kc|1004kc)
4971                 disable mipsfpu
4972                 disable mipsdspr2
4973             ;;
4974             24kef*|34kf*|1004kf*)
4975                 disable mipsdspr2
4976             ;;
4977             74kc)
4978                 disable mipsfpu
4979             ;;
4980             p5600)
4981                 enable mips32r5
4982                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4983             ;;
4984             i6400)
4985                 enable mips64r6
4986                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4987             ;;
4988             p6600)
4989                 enable mips64r6
4990                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4991             ;;
4992         esac
4993     else
4994         # We do not disable anything. Is up to the user to disable the unwanted features.
4995         warn 'generic cpu selected'
4996     fi
4997
4998 elif enabled ppc; then
4999
5000     disable ldbrx
5001
5002     case $(tolower $cpu) in
5003         601|ppc601|powerpc601)
5004             cpuflags="-mcpu=601"
5005             disable altivec
5006         ;;
5007         603*|ppc603*|powerpc603*)
5008             cpuflags="-mcpu=603"
5009             disable altivec
5010         ;;
5011         604*|ppc604*|powerpc604*)
5012             cpuflags="-mcpu=604"
5013             disable altivec
5014         ;;
5015         g3|75*|ppc75*|powerpc75*)
5016             cpuflags="-mcpu=750"
5017             disable altivec
5018         ;;
5019         g4|745*|ppc745*|powerpc745*)
5020             cpuflags="-mcpu=7450"
5021             disable vsx
5022         ;;
5023         74*|ppc74*|powerpc74*)
5024             cpuflags="-mcpu=7400"
5025             disable vsx
5026         ;;
5027         g5|970|ppc970|powerpc970)
5028             cpuflags="-mcpu=970"
5029             disable vsx
5030         ;;
5031         power[3-6]*)
5032             cpuflags="-mcpu=$cpu"
5033             disable vsx
5034         ;;
5035         power[7-8]*)
5036             cpuflags="-mcpu=$cpu"
5037         ;;
5038         cell)
5039             cpuflags="-mcpu=cell"
5040             enable ldbrx
5041             disable vsx
5042         ;;
5043         e500mc)
5044             cpuflags="-mcpu=e500mc"
5045             disable altivec
5046         ;;
5047         e500v2)
5048             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5049             disable altivec
5050             disable dcbzl
5051         ;;
5052         e500)
5053             cpuflags="-mcpu=8540 -mhard-float"
5054             disable altivec
5055             disable dcbzl
5056         ;;
5057     esac
5058
5059 elif enabled sparc; then
5060
5061     case $cpu in
5062         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5063             cpuflags="-mcpu=$cpu"
5064         ;;
5065         ultrasparc*|niagara[234])
5066             cpuflags="-mcpu=$cpu"
5067         ;;
5068     esac
5069
5070 elif enabled x86; then
5071
5072     case $cpu in
5073         i[345]86|pentium)
5074             cpuflags="-march=$cpu"
5075             disable i686
5076             disable mmx
5077         ;;
5078         # targets that do NOT support nopl and conditional mov (cmov)
5079         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5080             cpuflags="-march=$cpu"
5081             disable i686
5082         ;;
5083         # targets that do support nopl and conditional mov (cmov)
5084         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5085         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5086         |amdfam10|barcelona|b[dt]ver*|znver*)
5087             cpuflags="-march=$cpu"
5088             enable i686
5089             enable fast_cmov
5090         ;;
5091         # targets that do support conditional mov but on which it's slow
5092         pentium4|pentium4m|prescott|nocona)
5093             cpuflags="-march=$cpu"
5094             enable i686
5095             disable fast_cmov
5096         ;;
5097     esac
5098
5099 fi
5100
5101 if [ "$cpu" != generic ]; then
5102     add_cflags  $cpuflags
5103     add_asflags $cpuflags
5104     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5105 fi
5106
5107 # compiler sanity check
5108 test_exec <<EOF
5109 int main(void){ return 0; }
5110 EOF
5111 if test "$?" != 0; then
5112     echo "$cc is unable to create an executable file."
5113     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5114         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5115         echo "Only do this if you know what cross compiling means."
5116     fi
5117     die "C compiler test failed."
5118 fi
5119
5120 add_cppflags -D_ISOC99_SOURCE
5121 add_cxxflags -D__STDC_CONSTANT_MACROS
5122 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5123
5124 # some compilers silently accept -std=c11, so we also need to check that the
5125 # version macro is defined properly
5126 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5127     add_cflags -std=c11 ||
5128     check_cflags -std=c99
5129
5130 check_cppflags -D_FILE_OFFSET_BITS=64
5131 check_cppflags -D_LARGEFILE_SOURCE
5132
5133 add_host_cppflags -D_ISOC99_SOURCE
5134 check_host_cflags -std=c99
5135 check_host_cflags -Wall
5136 check_host_cflags $host_cflags_speed
5137
5138 check_64bit(){
5139     arch32=$1
5140     arch64=$2
5141     expr=${3:-'sizeof(void *) > 4'}
5142     test_code cc "" "int test[2*($expr) - 1]" &&
5143         subarch=$arch64 || subarch=$arch32
5144     enable $subarch
5145 }
5146
5147 case "$arch" in
5148     aarch64|alpha|ia64)
5149         enabled shared && enable_weak pic
5150     ;;
5151     mips)
5152         check_64bit mips mips64 '_MIPS_SIM > 1'
5153         enabled shared && enable_weak pic
5154     ;;
5155     parisc)
5156         check_64bit parisc parisc64
5157         enabled shared && enable_weak pic
5158     ;;
5159     ppc)
5160         check_64bit ppc ppc64
5161         enabled shared && enable_weak pic
5162     ;;
5163     s390)
5164         check_64bit s390 s390x
5165         enabled shared && enable_weak pic
5166     ;;
5167     sparc)
5168         check_64bit sparc sparc64
5169         enabled shared && enable_weak pic
5170     ;;
5171     x86)
5172         check_64bit x86_32 x86_64
5173         # Treat x32 as x64 for now. Note it also needs pic if shared
5174         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5175             subarch=x86_64 && enable x86_64 && disable x86_32
5176         if enabled x86_64; then
5177             enabled shared && enable_weak pic
5178             objformat=elf64
5179         fi
5180     ;;
5181 esac
5182
5183 # OS specific
5184 case $target_os in
5185     aix)
5186         SHFLAGS=-shared
5187         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5188         enabled shared && add_ldflags -Wl,-brtl
5189         arflags='-Xany -r -c'
5190         striptype=""
5191         ;;
5192     android)
5193         disable symver
5194         enable section_data_rel_ro
5195         add_cflags -fPIE
5196         add_ldexeflags -fPIE -pie
5197         SLIB_INSTALL_NAME='$(SLIBNAME)'
5198         SLIB_INSTALL_LINKS=
5199         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5200         ;;
5201     haiku)
5202         prefix_default="/boot/common"
5203         network_extralibs="-lnetwork"
5204         host_extralibs=
5205         ;;
5206     sunos)
5207         SHFLAGS='-shared -Wl,-h,$$(@F)'
5208         enabled x86 && append SHFLAGS -mimpure-text
5209         network_extralibs="-lsocket -lnsl"
5210         add_cppflags -D__EXTENSIONS__
5211         # When using suncc to build, the Solaris linker will mark
5212         # an executable with each instruction set encountered by
5213         # the Solaris assembler.  As our libraries contain their own
5214         # guards for processor-specific code, instead suppress
5215         # generation of the HWCAPS ELF section on Solaris x86 only.
5216         enabled_all suncc x86 &&
5217             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5218             add_ldflags -Wl,-M,mapfile
5219         nm_default='nm -P -g'
5220         striptype=""
5221         version_script='-M'
5222         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5223         ;;
5224     netbsd)
5225         disable symver
5226         oss_indev_extralibs="-lossaudio"
5227         oss_outdev_extralibs="-lossaudio"
5228         enabled gcc || check_ldflags -Wl,-zmuldefs
5229         ;;
5230     openbsd|bitrig)
5231         disable symver
5232         striptype=""
5233         SHFLAGS='-shared'
5234         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5235         SLIB_INSTALL_LINKS=
5236         oss_indev_extralibs="-lossaudio"
5237         oss_outdev_extralibs="-lossaudio"
5238         ;;
5239     dragonfly)
5240         disable symver
5241         ;;
5242     freebsd)
5243         ;;
5244     bsd/os)
5245         add_extralibs -lpoll -lgnugetopt
5246         strip="strip -d"
5247         ;;
5248     darwin)
5249         enabled ppc && add_asflags -force_cpusubtype_ALL
5250         install_name_dir_default='$(SHLIBDIR)'
5251         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5252         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5253         strip="${strip} -x"
5254         add_ldflags -Wl,-dynamic,-search_paths_first
5255         check_cflags -Werror=partial-availability
5256         SLIBSUF=".dylib"
5257         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5258         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5259         enabled x86_64 && objformat="macho64" || objformat="macho32"
5260         enabled_any pic shared x86_64 ||
5261             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5262         check_headers dispatch/dispatch.h &&
5263             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5264         if test -n "$sysroot"; then
5265             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5266             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5267         fi
5268         version_script='-exported_symbols_list'
5269         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5270         ;;
5271     msys*)
5272         die "Native MSYS builds are discouraged, please use the MINGW environment."
5273         ;;
5274     mingw32*|mingw64*)
5275         target_os=mingw32
5276         LIBTARGET=i386
5277         if enabled x86_64; then
5278             LIBTARGET="i386:x86-64"
5279         elif enabled arm; then
5280             LIBTARGET="arm"
5281         elif enabled aarch64; then
5282             LIBTARGET="arm64"
5283         fi
5284         if enabled shared; then
5285             # Cannot build both shared and static libs when using dllimport.
5286             disable static
5287         fi
5288         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5289         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5290         shlibdir_default="$bindir_default"
5291         SLIBPREF=""
5292         SLIBSUF=".dll"
5293         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5294         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5295         if test_cmd lib.exe -list; then
5296             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5297             if enabled x86_64; then
5298                 LIBTARGET=x64
5299             fi
5300         else
5301             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5302         fi
5303         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5304         SLIB_INSTALL_LINKS=
5305         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5306         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5307         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5308         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5309         enabled x86_64 && objformat="win64" || objformat="win32"
5310         dlltool="${cross_prefix}dlltool"
5311         ranlib=:
5312         enable dos_paths
5313         check_ldflags -Wl,--nxcompat,--dynamicbase
5314         # Lets work around some stupidity in binutils.
5315         # ld will strip relocations from executables even though we need them
5316         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5317         # however ld then forgets what the entry point should be (oops) so we
5318         # have to manually (re)set it.
5319         if enabled x86_32; then
5320             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5321         elif enabled x86_64; then
5322             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5323             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5324             # Set image base >4GB for extra entropy with HEASLR
5325             add_ldexeflags -Wl,--image-base,0x140000000
5326             append SHFLAGS -Wl,--image-base,0x180000000
5327         fi
5328         ;;
5329     win32|win64)
5330         disable symver
5331         if enabled shared; then
5332             # Link to the import library instead of the normal static library
5333             # for shared libs.
5334             LD_LIB='%.lib'
5335             # Cannot build both shared and static libs with MSVC or icl.
5336             disable static
5337         fi
5338         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5339         shlibdir_default="$bindir_default"
5340         SLIBPREF=""
5341         SLIBSUF=".dll"
5342         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5343         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5344         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5345         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5346         SLIB_INSTALL_LINKS=
5347         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5348         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5349         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5350         enabled x86_64 && objformat="win64" || objformat="win32"
5351         ranlib=:
5352         enable dos_paths
5353         ;;
5354     cygwin*)
5355         target_os=cygwin
5356         shlibdir_default="$bindir_default"
5357         SLIBPREF="cyg"
5358         SLIBSUF=".dll"
5359         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5360         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5361         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5362         SLIB_INSTALL_LINKS=
5363         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5364         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5365         enabled x86_64 && objformat="win64" || objformat="win32"
5366         enable dos_paths
5367         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5368         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5369         ;;
5370     *-dos|freedos|opendos)
5371         network_extralibs="-lsocket"
5372         objformat="coff"
5373         enable dos_paths
5374         ;;
5375     linux)
5376         enable section_data_rel_ro
5377         enabled_any arm aarch64 && enable_weak linux_perf
5378         ;;
5379     irix*)
5380         target_os=irix
5381         ranlib="echo ignoring ranlib"
5382         ;;
5383     os/2*)
5384         strip="lxlite -CS"
5385         striptype=""
5386         objformat="aout"
5387         add_cppflags -D_GNU_SOURCE
5388         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5389         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5390         LIBSUF="_s.a"
5391         SLIBPREF=""
5392         SLIBSUF=".dll"
5393         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5394         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5395         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5396             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5397             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5398             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5399             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5400         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5401             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5402         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5403         SLIB_INSTALL_LINKS=
5404         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5405         enable dos_paths
5406         enable_weak os2threads
5407         ;;
5408     gnu/kfreebsd)
5409         add_cppflags -D_BSD_SOURCE
5410         ;;
5411     gnu)
5412         ;;
5413     qnx)
5414         add_cppflags -D_QNX_SOURCE
5415         network_extralibs="-lsocket"
5416         ;;
5417     symbian)
5418         SLIBSUF=".dll"
5419         enable dos_paths
5420         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5421         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5422         add_ldflags -Wl,--target1-abs,--no-undefined \
5423                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5424                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5425         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5426                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5427                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5428         ;;
5429     minix)
5430         ;;
5431     none)
5432         ;;
5433     *)
5434         die "Unknown OS '$target_os'."
5435         ;;
5436 esac
5437
5438 # test if creating links works
5439 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5440 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5441 mkdir "$link_dest"
5442 $ln_s "$link_dest" "$link_name"
5443 touch "$link_dest/test_file"
5444 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5445     # create link to source path
5446     [ -e src ] && rm src
5447     $ln_s "$source_path" src
5448     source_link=src
5449 else
5450     # creating directory links doesn't work
5451     # fall back to using the full source path
5452     source_link="$source_path"
5453 fi
5454 # cleanup
5455 rm -r "$link_dest"
5456 rm -r "$link_name"
5457
5458 # determine libc flavour
5459
5460 probe_libc(){
5461     pfx=$1
5462     pfx_no_=${pfx%_}
5463     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5464     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5465         eval ${pfx}libc_type=uclibc
5466         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5467     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5468         eval ${pfx}libc_type=glibc
5469         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5470     # MinGW headers can be installed on Cygwin, so check for newlib first.
5471     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5472         eval ${pfx}libc_type=newlib
5473         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5474     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5475     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5476         eval ${pfx}libc_type=mingw64
5477         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5478             add_compat msvcrt/snprintf.o
5479             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5480         fi
5481         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5482         eval test \$${pfx_no_}cc_type = "gcc" &&
5483             add_${pfx}cppflags -D__printf__=__gnu_printf__
5484         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5485             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5486         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5487     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5488          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5489         eval ${pfx}libc_type=mingw32
5490         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5491             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5492             die "ERROR: MinGW32 runtime version must be >= 3.15."
5493         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5494         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5495             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5496         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5497             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5498         eval test \$${pfx_no_}cc_type = "gcc" &&
5499             add_${pfx}cppflags -D__printf__=__gnu_printf__
5500         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5501     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5502         eval ${pfx}libc_type=msvcrt
5503         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5504             if [ "$pfx" = host_ ]; then
5505                 add_host_cppflags -Dsnprintf=_snprintf
5506             else
5507                 add_compat strtod.o strtod=avpriv_strtod
5508                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5509                                              _snprintf=avpriv_snprintf  \
5510                                              vsnprintf=avpriv_vsnprintf
5511             fi
5512         fi
5513         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5514         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5515         # 0x601 by default unless something else is set by the user.
5516         # This can easily lead to us detecting functions only present
5517         # in such new versions and producing binaries requiring windows 7.0.
5518         # Therefore explicitly set the default to Vista unless the user has
5519         # set something else on the command line.
5520         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5521         # family. For these cases, configure is free to use any functions
5522         # found in the SDK headers by default. (Alternatively, we could force
5523         # _WIN32_WINNT to 0x0602 in that case.)
5524         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5525             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5526 #ifdef WINAPI_FAMILY
5527 #include <winapifamily.h>
5528 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5529 #error not desktop
5530 #endif
5531 #endif
5532 EOF
5533         if [ "$pfx" = "" ]; then
5534             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5535             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5536         fi
5537     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5538         eval ${pfx}libc_type=klibc
5539     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5540         eval ${pfx}libc_type=bionic
5541     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5542         eval ${pfx}libc_type=solaris
5543         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5544     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5545         eval ${pfx}libc_type=djgpp
5546         add_cppflags -U__STRICT_ANSI__
5547         add_cflags "-include $source_path/compat/djgpp/math.h"
5548         add_compat djgpp/math.o
5549     fi
5550     test_${pfx}cc <<EOF
5551 #include <time.h>
5552 void *v = localtime_r;
5553 EOF
5554 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5555 #include <time.h>
5556 void *v = localtime_r;
5557 EOF
5558
5559     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5560 }
5561
5562 probe_libc
5563 probe_libc host_
5564
5565 # hacks for compiler/libc/os combinations
5566
5567 case $libc_type in
5568     bionic)
5569         add_compat strtod.o strtod=avpriv_strtod
5570         ;;
5571 esac
5572
5573 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5574     add_cppflags '-I\$(SRC_PATH)/compat/float'
5575
5576 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5577
5578 set_default libdir
5579 : ${shlibdir_default:="$libdir"}
5580 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5581
5582 set_default $PATHS_LIST
5583 set_default nm
5584
5585 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5586
5587 enable_weak_pic() {
5588     disabled pic && return
5589     enable pic
5590     add_cppflags -DPIC
5591     case "$target_os" in
5592     mingw*|cygwin*|win*)
5593         ;;
5594     *)
5595         add_cflags -fPIC
5596         add_asflags -fPIC
5597         ;;
5598     esac
5599 }
5600
5601 enabled pic && enable_weak_pic
5602
5603 test_cc <<EOF || die "Symbol mangling check failed."
5604 int ff_extern;
5605 EOF
5606 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5607 extern_prefix=${sym%%ff_extern*}
5608
5609 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5610
5611 for restrict_keyword in restrict __restrict__ __restrict ""; do
5612     test_code cc "" "char * $restrict_keyword p" && break
5613 done
5614
5615 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5616
5617 # The global variable ensures the bits appear unchanged in the object file.
5618 test_cc <<EOF || die "endian test failed"
5619 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5620 EOF
5621 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5622
5623 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5624
5625 if ! enabled ppc64 || enabled bigendian; then
5626     disable vsx
5627 fi
5628
5629 check_gas() {
5630     log "check_gas using '$as' as AS"
5631     # :vararg is used on aarch64, arm and ppc altivec
5632     check_as vararg "
5633 .macro m n, y:vararg=0
5634 \n: .int \y
5635 .endm
5636 m x" || return 1
5637     # .altmacro is only used in arm asm
5638     ! enabled arm || check_as gnu_as ".altmacro"
5639 }
5640
5641 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5642     nogas=:
5643     enabled_any arm aarch64 && nogas=die
5644     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5645     as_noop=-v
5646
5647     case $as_type in
5648         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5649         gcc)  gaspp_as_type=gas ;;
5650         *)    gaspp_as_type=$as_type ;;
5651     esac
5652
5653     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5654
5655     test "${as#*gas-preprocessor.pl}" != "$as" ||
5656     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5657         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5658
5659     if ! check_gas ; then
5660         as=${gas:=$as}
5661         check_gas || \
5662             $nogas "GNU assembler not found, install/update gas-preprocessor"
5663     fi
5664
5665     check_as as_func ".func test
5666                       .endfunc"
5667 fi
5668
5669 check_inline_asm inline_asm_labels '"1:\n"'
5670
5671 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5672
5673 if enabled aarch64; then
5674     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5675     # internal assembler in clang 3.3 does not support this instruction
5676     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5677     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5678
5679     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5680
5681 elif enabled alpha; then
5682
5683     check_cflags -mieee
5684
5685 elif enabled arm; then
5686
5687     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5688     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5689 float func(float a, float b){ return a+b; }
5690 EOF
5691     enabled thumb && check_cflags -mthumb || check_cflags -marm
5692
5693     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5694         :
5695     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5696         :
5697     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5698         case "${cross_prefix:-$cc}" in
5699             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5700             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5701 __asm__ (".eabi_attribute 28, 1");
5702 int main(void) { return 0; }
5703 EOF
5704         esac
5705         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5706     fi
5707
5708     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5709     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5710     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5711     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5712     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5713     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5714     enabled setend  && check_insn setend  'setend be'
5715
5716     [ $target_os = linux ] || [ $target_os = android ] ||
5717         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5718             $ARCH_EXT_LIST_ARM
5719
5720     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5721
5722     check_as as_arch_directive ".arch armv7-a"
5723     check_as as_dn_directive   "ra .dn d0.i16"
5724     check_as as_fpu_directive  ".fpu neon"
5725
5726     # llvm's integrated assembler supports .object_arch from llvm 3.5
5727     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5728         check_as as_object_arch ".object_arch armv4"
5729
5730     # MS armasm fails to assemble our PIC constructs
5731     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5732
5733 elif enabled mips; then
5734
5735     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5736     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5737     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5738
5739     # Enable minimum ISA based on selected options
5740     if enabled mips64; then
5741         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5742         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5743         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5744     else
5745         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5746         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5747         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5748         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5749     fi
5750
5751     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5752     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5753     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5754     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5755     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5756
5757     if enabled bigendian && enabled msa; then
5758         disable msa
5759     fi
5760
5761 elif enabled parisc; then
5762
5763     if enabled gcc; then
5764         case $($cc -dumpversion) in
5765             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5766         esac
5767     fi
5768
5769 elif enabled ppc; then
5770
5771     enable local_aligned
5772
5773     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5774     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5775     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5776     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5777
5778     if enabled altivec; then
5779         check_cflags -maltivec -mabi=altivec
5780
5781         # check if our compiler supports Motorola AltiVec C API
5782         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5783                                     vector signed int v2 = (vector signed int) { 1 };
5784                                     v1 = vec_add(v1, v2);"
5785
5786         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5787     fi
5788
5789     if enabled vsx; then
5790         check_cflags -mvsx &&
5791         check_cc vsx altivec.h "int v[4] = { 0 };
5792                                 vector signed int v1 = vec_vsx_ld(0, v);"
5793     fi
5794
5795     if enabled power8; then
5796         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5797     fi
5798
5799 elif enabled x86; then
5800
5801     check_builtin rdtsc    intrin.h   "__rdtsc()"
5802     check_builtin mm_empty mmintrin.h "_mm_empty()"
5803
5804     enable local_aligned
5805
5806     # check whether EBP is available on x86
5807     # As 'i' is stored on the stack, this program will crash
5808     # if the base pointer is used to access it because the
5809     # base pointer is cleared in the inline assembly code.
5810     check_exec_crash <<EOF && enable ebp_available
5811 volatile int i=0;
5812 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5813 return i;
5814 EOF
5815
5816     # check whether EBX is available on x86
5817     check_inline_asm ebx_available '""::"b"(0)' &&
5818         check_inline_asm ebx_available '"":::"%ebx"'
5819
5820     # check whether xmm clobbers are supported
5821     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5822
5823     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5824         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5825
5826     # check whether binutils is new enough to compile SSSE3/MMXEXT
5827     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5828     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5829
5830     probe_x86asm(){
5831         x86asmexe_probe=$1
5832         if test_cmd $x86asmexe_probe -v; then
5833             x86asmexe=$x86asmexe_probe
5834             x86asm_type=nasm
5835             x86asm_debug="-g -F dwarf"
5836             X86ASMDEP=
5837             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5838         elif test_cmd $x86asmexe_probe --version; then
5839             x86asmexe=$x86asmexe_probe
5840             x86asm_type=yasm
5841             x86asm_debug="-g dwarf2"
5842             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5843             X86ASM_DEPFLAGS=
5844         fi
5845         check_x86asm x86asm "movbe ecx, [5]"
5846     }
5847
5848     if ! disabled_any asm mmx x86asm; then
5849         disable x86asm
5850         for program in $x86asmexe nasm yasm; do
5851             probe_x86asm $program && break
5852         done
5853         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5854         X86ASMFLAGS="-f $objformat"
5855         enabled pic               && append X86ASMFLAGS "-DPIC"
5856         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5857         case "$objformat" in
5858             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5859         esac
5860
5861         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5862         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5863         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5864         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5865         check_x86asm cpunop          "CPU amdnop"
5866     fi
5867
5868     case "$cpu" in
5869         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5870             disable fast_clz
5871         ;;
5872     esac
5873
5874 fi
5875
5876 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5877
5878 check_ldflags -Wl,--as-needed
5879 check_ldflags -Wl,-z,noexecstack
5880
5881 if ! disabled network; then
5882     check_func getaddrinfo $network_extralibs
5883     check_func inet_aton $network_extralibs
5884
5885     check_type netdb.h "struct addrinfo"
5886     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5887     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5888     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5889     check_type poll.h "struct pollfd"
5890     check_type netinet/sctp.h "struct sctp_event_subscribe"
5891     check_struct "sys/socket.h" "struct msghdr" msg_flags
5892     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5893     check_type netinet/in.h "struct sockaddr_in6"
5894     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5895     check_type "sys/types.h sys/socket.h" socklen_t
5896
5897     # Prefer arpa/inet.h over winsock2
5898     if check_headers arpa/inet.h ; then
5899         check_func closesocket
5900     elif check_headers winsock2.h ; then
5901         check_func_headers winsock2.h closesocket -lws2 &&
5902             network_extralibs="-lws2" ||
5903         { check_func_headers winsock2.h closesocket -lws2_32 &&
5904             network_extralibs="-lws2_32"; } || disable winsock2_h network
5905         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5906
5907         check_type ws2tcpip.h socklen_t
5908         check_type ws2tcpip.h "struct addrinfo"
5909         check_type ws2tcpip.h "struct group_source_req"
5910         check_type ws2tcpip.h "struct ip_mreq_source"
5911         check_type ws2tcpip.h "struct ipv6_mreq"
5912         check_type winsock2.h "struct pollfd"
5913         check_struct winsock2.h "struct sockaddr" sa_len
5914         check_type ws2tcpip.h "struct sockaddr_in6"
5915         check_type ws2tcpip.h "struct sockaddr_storage"
5916     else
5917         disable network
5918     fi
5919 fi
5920
5921 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5922 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5923 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5924 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5925 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5926 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5927 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5928
5929 case "$custom_allocator" in
5930     jemalloc)
5931         # jemalloc by default does not use a prefix
5932         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5933     ;;
5934     tcmalloc)
5935         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5936         malloc_prefix=tc_
5937     ;;
5938 esac
5939
5940 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5941 check_func  ${malloc_prefix}memalign            && enable memalign
5942 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5943
5944 check_func  access
5945 check_func_headers stdlib.h arc4random
5946 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5947 check_func  fcntl
5948 check_func  fork
5949 check_func  gethrtime
5950 check_func  getopt
5951 check_func  getrusage
5952 check_func  gettimeofday
5953 check_func  isatty
5954 check_func  mkstemp
5955 check_func  mmap
5956 check_func  mprotect
5957 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5958 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5959 check_func  sched_getaffinity
5960 check_func  setrlimit
5961 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5962 check_func  strerror_r
5963 check_func  sysconf
5964 check_func  sysctl
5965 check_func  usleep
5966
5967 check_func_headers conio.h kbhit
5968 check_func_headers io.h setmode
5969 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5970 check_func_headers mach/mach_time.h mach_absolute_time
5971 check_func_headers stdlib.h getenv
5972 check_func_headers sys/stat.h lstat
5973
5974 check_func_headers windows.h GetProcessAffinityMask
5975 check_func_headers windows.h GetProcessTimes
5976 check_func_headers windows.h GetSystemTimeAsFileTime
5977 check_func_headers windows.h LoadLibrary
5978 check_func_headers windows.h MapViewOfFile
5979 check_func_headers windows.h PeekNamedPipe
5980 check_func_headers windows.h SetConsoleTextAttribute
5981 check_func_headers windows.h SetConsoleCtrlHandler
5982 check_func_headers windows.h Sleep
5983 check_func_headers windows.h VirtualAlloc
5984 check_func_headers glob.h glob
5985 enabled xlib &&
5986     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5987
5988 check_headers direct.h
5989 check_headers dirent.h
5990 check_headers dxgidebug.h
5991 check_headers dxva.h
5992 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5993 check_headers io.h
5994 check_headers linux/perf_event.h
5995 check_headers libcrystalhd/libcrystalhd_if.h
5996 check_headers malloc.h
5997 check_headers net/udplite.h
5998 check_headers poll.h
5999 check_headers sys/param.h
6000 check_headers sys/resource.h
6001 check_headers sys/select.h
6002 check_headers sys/time.h
6003 check_headers sys/un.h
6004 check_headers termios.h
6005 check_headers unistd.h
6006 check_headers valgrind/valgrind.h
6007 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6008 check_headers windows.h
6009 check_headers X11/extensions/XvMClib.h
6010 check_headers asm/types.h
6011
6012 # it seems there are versions of clang in some distros that try to use the
6013 # gcc headers, which explodes for stdatomic
6014 # so we also check that atomics actually work here
6015 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6016
6017 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6018 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6019     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6020 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6021 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6022 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6023
6024 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6025 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6026 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6027
6028 enabled appkit       && check_apple_framework AppKit
6029 enabled audiotoolbox && check_apple_framework AudioToolbox
6030 enabled avfoundation && check_apple_framework AVFoundation
6031 enabled coreimage    && check_apple_framework CoreImage
6032 enabled videotoolbox && check_apple_framework VideoToolbox
6033
6034 check_apple_framework CoreFoundation
6035 check_apple_framework CoreMedia
6036 check_apple_framework CoreVideo
6037
6038 enabled avfoundation && {
6039     disable coregraphics applicationservices
6040     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6041     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6042
6043 enabled videotoolbox && {
6044     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6045     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6046     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6047 }
6048
6049 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6050
6051 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6052 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6053 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6054 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6055 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6056
6057 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6058
6059 if enabled cuda_sdk; then
6060     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6061     enable cuda_nvcc
6062 fi
6063
6064 if ! disabled ffnvcodec; then
6065     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6066     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6067       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6068       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6069       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6070 fi
6071
6072 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6073
6074 if ! disabled w32threads && ! enabled pthreads; then
6075     check_func_headers "windows.h process.h" _beginthreadex &&
6076         check_type "windows.h" CONDITION_VARIABLE &&
6077         check_type "windows.h" INIT_ONCE &&
6078         enable w32threads || disable w32threads
6079     if ! enabled w32threads && enabled winrt; then
6080         check_func_headers "windows.h" CreateThread &&
6081             enable w32threads || disable w32threads
6082     fi
6083 fi
6084
6085 # check for some common methods of building with pthread support
6086 # do this before the optional library checks as some of them require pthreads
6087 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6088     if check_lib pthreads pthread.h pthread_join   -pthread &&
6089        check_lib pthreads pthread.h pthread_create -pthread; then
6090         add_cflags -pthread
6091     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6092          check_lib pthreads pthread.h pthread_create -pthreads; then
6093         add_cflags -pthreads
6094     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6095          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6096         add_cflags -ldl -pthread
6097     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6098          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6099         :
6100     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6101          check_lib pthreads pthread.h pthread_create -lpthread; then
6102         :
6103     elif check_func pthread_join && check_func pthread_create; then
6104         enable pthreads
6105     fi
6106     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6107
6108     if enabled pthreads; then
6109         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6110         check_func pthread_cancel $pthreads_extralibs
6111     fi
6112 fi
6113
6114 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6115                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6116 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6117 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6118
6119 # On some systems dynamic loading requires no extra linker flags
6120 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6121
6122 check_lib libm math.h sin -lm
6123
6124 atan2f_args=2
6125 copysign_args=2
6126 hypot_args=2
6127 ldexpf_args=2
6128 powf_args=2
6129
6130 for func in $MATH_FUNCS; do
6131     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6132 done
6133
6134 for func in $COMPLEX_FUNCS; do
6135     eval check_complexfunc $func \${${func}_args:-1}
6136 done
6137
6138 # these are off by default, so fail if requested and not available
6139 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6140 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6141 enabled decklink          && { require_headers DeckLinkAPI.h &&
6142                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6143 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6144 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6145 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6146 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6147 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6148 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6149 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6150                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6151                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6152 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6153 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6154 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6155 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6156 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6157 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6158                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6159                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6160 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6161 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6162 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6163 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6164 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6165 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6166 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6167                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6168                                  warn "using libfdk without pkg-config"; } }
6169 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"
6170 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6171 enabled fontconfig        && enable libfontconfig
6172 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6173 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6174 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6175 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6176                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6177 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6178                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6179                                done || die "ERROR: libgsm not found"; }
6180 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6181 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6182 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6183 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6184 # While it may appear that require is being used as a pkg-config
6185 # fallback for libmfx, it is actually being used to detect a different
6186 # installation route altogether.  If libmfx is installed via the Intel
6187 # Media SDK or Intel Media Server Studio, these don't come with
6188 # pkg-config support.  Instead, users should make sure that the build
6189 # can find the libraries and headers through other means.
6190 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6191                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6192 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6193 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6194 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6195                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6196 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6197                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6198                                die "ERROR: libnpp not found"; }
6199 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6200 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6201 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6202                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6203                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6204                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6205 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6206 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6207                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6208 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6209 enabled libopus           && {
6210     enabled libopus_decoder && {
6211         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6212     }
6213     enabled libopus_encoder && {
6214         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6215     }
6216 }
6217 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6218 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6219 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6220 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6221 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6222 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6223                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6224 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6225 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6226 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6227 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6228 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6229 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6230 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6231 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6232 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6233 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6234                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6235                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6236 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6237 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6238 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6239 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6240 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6241                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6242
6243 enabled libvpx            && {
6244     enabled libvpx_vp8_decoder && {
6245         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6246             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"
6247     }
6248     enabled libvpx_vp8_encoder && {
6249         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6250             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"
6251     }
6252     enabled libvpx_vp9_decoder && {
6253         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6254             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"
6255     }
6256     enabled libvpx_vp9_encoder && {
6257         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6258             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"
6259     }
6260     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6261         die "libvpx enabled but no supported decoders found"
6262     fi
6263 }
6264
6265 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6266 enabled libwebp           && {
6267     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6268     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6269 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6270                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6271                                  warn "using libx264 without pkg-config"; } } &&
6272                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6273                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6274 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6275                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6276 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6277 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6278 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6279 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6280 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6281 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6282                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6283                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6284 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6285 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6286                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6287                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6288                                die "ERROR: mbedTLS not found"; }
6289 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6290 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6291                                { ! enabled cross_compile &&
6292                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6293                                  add_ldflags -L/opt/vc/lib/ &&
6294                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6295                                die "ERROR: mmal not found" &&
6296                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6297 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6298                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6299                                die "ERROR: openal not found"; } &&
6300                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6301                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6302 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6303                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6304                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6305                                die "ERROR: opencl not found"; } &&
6306                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6307                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6308                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6309 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6310                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6311                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6312                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6313                                die "ERROR: opengl not found."
6314                              }
6315 enabled omx               && require_headers OMX_Core.h
6316 enabled omx_rpi           && { check_headers OMX_Core.h ||
6317                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6318                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6319 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6320                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6321                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6322                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6323                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6324                                die "ERROR: openssl not found"; }
6325 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6326 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6327                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6328                                { enabled libdrm ||
6329                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6330                              }
6331 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6332
6333
6334 if enabled gcrypt; then
6335     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6336     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6337         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6338         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6339         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6340             die "ERROR: gcrypt not found"
6341         add_cflags $gcrypt_cflags
6342     else
6343         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6344     fi
6345 fi
6346
6347 if enabled sdl2; then
6348     SDL2_CONFIG="${cross_prefix}sdl2-config"
6349     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6350     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6351         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6352         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6353         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6354         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6355         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6356             enable sdl2
6357     fi
6358     if test $target_os = "mingw32"; then
6359         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6360     fi
6361 fi
6362
6363 if enabled decklink; then
6364     case $target_os in
6365         mingw32*|mingw64*|win32|win64)
6366             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6367             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6368             ;;
6369     esac
6370 fi
6371
6372 enabled securetransport &&
6373     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6374     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6375         disable securetransport
6376
6377 enabled securetransport &&
6378     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6379
6380 enabled schannel &&
6381     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6382     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6383     schannel_extralibs="-lsecur32" ||
6384         disable schannel
6385
6386 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6387 enabled makeinfo \
6388     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6389     && enable makeinfo_html || disable makeinfo_html
6390 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6391 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6392 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6393 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6394
6395 # check V4L2 codecs available in the API
6396 check_headers linux/fb.h
6397 check_headers linux/videodev2.h
6398 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6399 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6400 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6401 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6402 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6403 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6404 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6405 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6406 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6407 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6408 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6409
6410 check_headers sys/videoio.h
6411 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6412
6413 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6414 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6415 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6416 # w32api 3.12 had it defined wrong
6417 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6418
6419 check_type "dshow.h" IBaseFilter
6420
6421 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6422 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6423     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6424     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6425     check_headers "dev/ic/bt8xx.h"
6426
6427 if check_struct sys/soundcard.h audio_buf_info bytes; then
6428     enable_sanitized sys/soundcard.h
6429 else
6430     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6431     #include <sys/soundcard.h>
6432     audio_buf_info abc;
6433 EOF
6434 fi
6435
6436 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6437     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6438
6439 enabled libjack &&
6440     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6441
6442 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6443
6444 if enabled libcdio; then
6445     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6446     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6447     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6448     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6449     die "ERROR: No usable libcdio/cdparanoia found"
6450 fi
6451
6452 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6453     disable libxcb_shm libxcb_shape libxcb_xfixes
6454
6455 if enabled libxcb; then
6456     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6457     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6458     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6459 fi
6460
6461 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6462
6463 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6464 # the desktop api partition
6465 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6466 #ifdef WINAPI_FAMILY
6467 #include <winapifamily.h>
6468 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6469 #error desktop, not uwp
6470 #else
6471 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6472 #endif
6473 #else
6474 #error no family set
6475 #endif
6476 EOF
6477
6478 enabled vaapi &&
6479     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6480
6481 if enabled vaapi; then
6482     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6483
6484     if enabled xlib; then
6485         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6486     fi
6487
6488     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6489
6490     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6491     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6492     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6493     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6494     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6495     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6496     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6497 fi
6498
6499 if enabled_all opencl libdrm ; then
6500     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6501         enable opencl_drm_beignet
6502     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6503         enable opencl_drm_arm
6504 fi
6505
6506 if enabled_all opencl vaapi ; then
6507     if enabled opencl_drm_beignet ; then
6508         enable opencl_vaapi_beignet
6509     else
6510         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6511             enable opencl_vaapi_intel_media
6512     fi
6513 fi
6514
6515 if enabled_all opencl dxva2 ; then
6516     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6517         enable opencl_dxva2
6518 fi
6519
6520 if enabled_all opencl d3d11va ; then
6521     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6522         enable opencl_d3d11
6523 fi
6524
6525 enabled vdpau &&
6526     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6527
6528 enabled vdpau &&
6529     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6530
6531 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6532
6533 if enabled x86; then
6534     case $target_os in
6535         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6536             ;;
6537         *)
6538             disable ffnvcodec cuvid nvdec nvenc
6539             ;;
6540     esac
6541 elif enabled ppc64 && ! enabled bigendian; then
6542     case $target_os in
6543         linux)
6544             ;;
6545         *)
6546             disable ffnvcodec cuvid nvdec nvenc
6547             ;;
6548     esac
6549 else
6550     disable ffnvcodec cuvid nvdec nvenc
6551 fi
6552
6553 enabled ffnvcodec && enable cuda
6554
6555 enabled nvenc &&
6556     test_cc -I$source_path <<EOF || disable nvenc
6557 #include <ffnvcodec/nvEncodeAPI.h>
6558 NV_ENCODE_API_FUNCTION_LIST flist;
6559 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6560 int main(void) { return 0; }
6561 EOF
6562
6563 enabled amf &&
6564     check_cpp_condition amf "AMF/core/Version.h" \
6565         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6566
6567 # Funny iconv installations are not unusual, so check it after all flags have been set
6568 if enabled libc_iconv; then
6569     check_func_headers iconv.h iconv
6570 elif enabled iconv; then
6571     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6572 fi
6573
6574 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6575
6576 # add some useful compiler flags if supported
6577 check_cflags -Wdeclaration-after-statement
6578 check_cflags -Wall
6579 check_cflags -Wdisabled-optimization
6580 check_cflags -Wpointer-arith
6581 check_cflags -Wredundant-decls
6582 check_cflags -Wwrite-strings
6583 check_cflags -Wtype-limits
6584 check_cflags -Wundef
6585 check_cflags -Wmissing-prototypes
6586 check_cflags -Wno-pointer-to-int-cast
6587 check_cflags -Wstrict-prototypes
6588 check_cflags -Wempty-body
6589
6590 if enabled extra_warnings; then
6591     check_cflags -Wcast-qual
6592     check_cflags -Wextra
6593     check_cflags -Wpedantic
6594 fi
6595
6596 check_disable_warning(){
6597     warning_flag=-W${1#-Wno-}
6598     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6599 }
6600
6601 test_cflags -Werror=unused-command-line-argument &&
6602     append unknown_warning_flags "-Werror=unused-command-line-argument"
6603 test_cflags -Werror=unknown-warning-option &&
6604     append unknown_warning_flags "-Werror=unknown-warning-option"
6605
6606 check_disable_warning -Wno-parentheses
6607 check_disable_warning -Wno-switch
6608 check_disable_warning -Wno-format-zero-length
6609 check_disable_warning -Wno-pointer-sign
6610 check_disable_warning -Wno-unused-const-variable
6611 check_disable_warning -Wno-bool-operation
6612 check_disable_warning -Wno-char-subscripts
6613
6614 check_disable_warning_headers(){
6615     warning_flag=-W${1#-Wno-}
6616     test_cflags $warning_flag && add_cflags_headers $1
6617 }
6618
6619 check_disable_warning_headers -Wno-deprecated-declarations
6620 check_disable_warning_headers -Wno-unused-variable
6621
6622 test_cc <<EOF && enable blocks_extension
6623 void (^block)(void);
6624 EOF
6625
6626 # add some linker flags
6627 check_ldflags -Wl,--warn-common
6628 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6629 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6630 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6631
6632 # add some strip flags
6633 check_stripflags -x
6634
6635 enabled neon_clobber_test &&
6636     check_ldflags -Wl,--wrap,avcodec_open2              \
6637                   -Wl,--wrap,avcodec_decode_audio4      \
6638                   -Wl,--wrap,avcodec_decode_video2      \
6639                   -Wl,--wrap,avcodec_decode_subtitle2   \
6640                   -Wl,--wrap,avcodec_encode_audio2      \
6641                   -Wl,--wrap,avcodec_encode_video2      \
6642                   -Wl,--wrap,avcodec_encode_subtitle    \
6643                   -Wl,--wrap,avcodec_send_packet        \
6644                   -Wl,--wrap,avcodec_receive_packet     \
6645                   -Wl,--wrap,avcodec_send_frame         \
6646                   -Wl,--wrap,avcodec_receive_frame      \
6647                   -Wl,--wrap,swr_convert                \
6648                   -Wl,--wrap,avresample_convert ||
6649     disable neon_clobber_test
6650
6651 enabled xmm_clobber_test &&
6652     check_ldflags -Wl,--wrap,avcodec_open2              \
6653                   -Wl,--wrap,avcodec_decode_audio4      \
6654                   -Wl,--wrap,avcodec_decode_video2      \
6655                   -Wl,--wrap,avcodec_decode_subtitle2   \
6656                   -Wl,--wrap,avcodec_encode_audio2      \
6657                   -Wl,--wrap,avcodec_encode_video2      \
6658                   -Wl,--wrap,avcodec_encode_subtitle    \
6659                   -Wl,--wrap,avcodec_send_packet        \
6660                   -Wl,--wrap,avcodec_receive_packet     \
6661                   -Wl,--wrap,avcodec_send_frame         \
6662                   -Wl,--wrap,avcodec_receive_frame      \
6663                   -Wl,--wrap,swr_convert                \
6664                   -Wl,--wrap,avresample_convert         \
6665                   -Wl,--wrap,sws_scale ||
6666     disable xmm_clobber_test
6667
6668 check_ld "cc" proper_dce <<EOF
6669 extern const int array[512];
6670 static inline int func(void) { return array[0]; }
6671 int main(void) { return 0; }
6672 EOF
6673
6674 if enabled proper_dce; then
6675     echo "X { local: *; };" > $TMPV
6676     if test_ldflags -Wl,${version_script},$TMPV; then
6677         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6678         quotes='""'
6679         test_cc <<EOF && enable symver_asm_label
6680 void ff_foo(void) __asm__ ("av_foo@VERSION");
6681 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6682 EOF
6683         test_cc <<EOF && enable symver_gnu_asm
6684 __asm__(".symver ff_foo,av_foo@VERSION");
6685 void ff_foo(void) {}
6686 EOF
6687     fi
6688 fi
6689
6690 if [ -z "$optflags" ]; then
6691     if enabled small; then
6692         optflags=$cflags_size
6693     elif enabled optimizations; then
6694         optflags=$cflags_speed
6695     else
6696         optflags=$cflags_noopt
6697     fi
6698 fi
6699
6700 if [ -z "$nvccflags" ]; then
6701     nvccflags=$nvccflags_default
6702 fi
6703
6704 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6705     nvccflags="$nvccflags -m64"
6706 else
6707     nvccflags="$nvccflags -m32"
6708 fi
6709
6710 check_optflags(){
6711     check_cflags "$@"
6712     enabled lto && check_ldflags "$@"
6713 }
6714
6715 check_optflags $optflags
6716 check_optflags -fno-math-errno
6717 check_optflags -fno-signed-zeros
6718
6719 if enabled lto; then
6720     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6721     check_cflags  -flto
6722     check_ldflags -flto $cpuflags
6723     disable inline_asm_direct_symbol_refs
6724 fi
6725
6726 enabled ftrapv && check_cflags -ftrapv
6727
6728 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6729 int x;
6730 EOF
6731
6732
6733 if enabled icc; then
6734     # Just warnings, no remarks
6735     check_cflags -w1
6736     # -wd: Disable following warnings
6737     # 144, 167, 556: -Wno-pointer-sign
6738     # 188: enumerated type mixed with another type
6739     # 1292: attribute "foo" ignored
6740     # 1419: external declaration in primary source file
6741     # 10006: ignoring unknown option -fno-signed-zeros
6742     # 10148: ignoring unknown option -Wno-parentheses
6743     # 10156: ignoring option '-W'; no argument required
6744     # 13200: No EMMS instruction before call to function
6745     # 13203: No EMMS instruction before return from function
6746     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6747     # 11030: Warning unknown option --as-needed
6748     # 10156: ignoring option '-export'; no argument required
6749     check_ldflags -wd10156,11030
6750     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6751     enable ebp_available
6752     # The test above does not test linking
6753     enabled lto && disable symver_asm_label
6754     if enabled x86_32; then
6755         icc_version=$($cc -dumpversion)
6756         test ${icc_version%%.*} -ge 11 &&
6757             check_cflags -falign-stack=maintain-16-byte ||
6758             disable aligned_stack
6759     fi
6760 elif enabled gcc; then
6761     check_optflags -fno-tree-vectorize
6762     check_cflags -Werror=format-security
6763     check_cflags -Werror=implicit-function-declaration
6764     check_cflags -Werror=missing-prototypes
6765     check_cflags -Werror=return-type
6766     check_cflags -Werror=vla
6767     check_cflags -Wformat
6768     check_cflags -fdiagnostics-color=auto
6769     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6770     if enabled x86_32; then
6771         case $target_os in
6772         *bsd*)
6773             # BSDs don't guarantee a 16 byte aligned stack, but we can
6774             # request GCC to try to maintain 16 byte alignment throughout
6775             # function calls. Library entry points that might call assembly
6776             # functions align the stack. (The parameter means 2^4 bytes.)
6777             check_cflags -mpreferred-stack-boundary=4
6778             ;;
6779         esac
6780     fi
6781 elif enabled llvm_gcc; then
6782     check_cflags -mllvm -stack-alignment=16
6783 elif enabled clang; then
6784     if enabled x86_32; then
6785         # Clang doesn't support maintaining alignment without assuming the
6786         # same alignment in every function. If 16 byte alignment would be
6787         # enabled, one would also have to either add attribute_align_arg on
6788         # every single entry point into the libraries or enable -mstackrealign
6789         # (doing stack realignment in every single function).
6790         case $target_os in
6791         mingw32|win32|*bsd*)
6792             disable aligned_stack
6793             ;;
6794         *)
6795             check_cflags -mllvm -stack-alignment=16
6796             check_cflags -mstack-alignment=16
6797             ;;
6798         esac
6799     else
6800         check_cflags -mllvm -stack-alignment=16
6801         check_cflags -mstack-alignment=16
6802     fi
6803     check_cflags -Qunused-arguments
6804     check_cflags -Werror=implicit-function-declaration
6805     check_cflags -Werror=missing-prototypes
6806     check_cflags -Werror=return-type
6807 elif enabled cparser; then
6808     add_cflags -Wno-missing-variable-declarations
6809     add_cflags -Wno-empty-statement
6810 elif enabled armcc; then
6811     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6812     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6813     # 2523: use of inline assembly is deprecated
6814     add_cflags -W${armcc_opt},--diag_suppress=2523
6815     add_cflags -W${armcc_opt},--diag_suppress=1207
6816     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6817     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6818     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6819     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6820 elif enabled pathscale; then
6821     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6822     disable inline_asm
6823 elif enabled_any msvc icl; then
6824     enabled x86_32 && disable aligned_stack
6825     enabled_all x86_32 debug && add_cflags -Oy-
6826     enabled debug && add_ldflags -debug
6827     enable pragma_deprecated
6828     if enabled icl; then
6829         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6830         # (correctly) on icl 13.x.
6831         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6832             add_cflags -Qansi-alias
6833         # Some inline asm is not compilable in debug
6834         if enabled debug; then
6835             disable ebp_available
6836             disable ebx_available
6837         fi
6838     fi
6839     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6840     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6841     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6842     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6843     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6844     # MSVC 2013 and newer can handle it fine.
6845     # If this declspec fails, force including stdlib.h before the restrict redefinition
6846     # happens in config.h.
6847     if [ $restrict_keyword != restrict ]; then
6848         test_cc <<EOF || add_cflags -FIstdlib.h
6849 __declspec($restrict_keyword) void *foo(int);
6850 EOF
6851     fi
6852     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6853     # Issue has been fixed in MSVC v19.00.24218.
6854     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6855         check_cflags -d2SSAOptimizer-
6856     # enable utf-8 source processing on VS2015 U2 and newer
6857     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6858         add_cflags -utf-8
6859 fi
6860
6861 for pfx in "" host_; do
6862     varname=${pfx%_}cc_type
6863     eval "type=\$$varname"
6864     if [ "$type" = "msvc" ]; then
6865         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6866 static inline int foo(int a) { return a; }
6867 EOF
6868     fi
6869 done
6870
6871 case $as_type in
6872     clang)
6873         add_asflags -Qunused-arguments
6874     ;;
6875 esac
6876
6877 case $ld_type in
6878     clang)
6879         check_ldflags -Qunused-arguments
6880     ;;
6881 esac
6882
6883 enable frame_thread_encoder
6884
6885 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6886
6887 check_deps $CONFIG_LIST       \
6888            $CONFIG_EXTRA      \
6889            $HAVE_LIST         \
6890            $ALL_COMPONENTS    \
6891
6892 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"
6893 enabled avresample && warn "Building with deprecated library libavresample"
6894
6895 case $target_os in
6896 haiku)
6897     disable memalign
6898     disable posix_memalign
6899     ;;
6900 *-dos|freedos|opendos)
6901     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6902         disable memalign
6903     fi
6904     ;;
6905 esac
6906
6907 flatten_extralibs(){
6908     nested_entries=
6909     list_name=$1
6910     eval list=\$${1}
6911     for entry in $list; do
6912         entry_copy=$entry
6913         resolve entry_copy
6914         flat_entries=
6915         for e in $entry_copy; do
6916             case $e in
6917                 *_extralibs) nested_entries="$nested_entries$e ";;
6918                           *) flat_entries="$flat_entries$e ";;
6919             esac
6920         done
6921         eval $entry="\$flat_entries"
6922     done
6923     append $list_name "$nested_entries"
6924
6925     resolve nested_entries
6926     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6927         flatten_extralibs $list_name
6928     fi
6929 }
6930
6931 flatten_extralibs_wrapper(){
6932     list_name=$1
6933     flatten_extralibs $list_name
6934     unique $list_name
6935     resolve $list_name
6936     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6937     eval printf \''%s'\' \""\$$list_name"\"
6938 }
6939
6940 for linkunit in $LIBRARY_LIST; do
6941     unset current_extralibs
6942     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6943     for comp in ${components}; do
6944         enabled $comp || continue
6945         comp_extralibs="${comp}_extralibs"
6946         append current_extralibs $comp_extralibs
6947     done
6948     eval prepend ${linkunit}_extralibs $current_extralibs
6949 done
6950
6951 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6952     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6953 done
6954
6955 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6956
6957 for thread in $THREADS_LIST; do
6958     if enabled $thread; then
6959         test -n "$thread_type" &&
6960             die "ERROR: Only one thread type must be selected." ||
6961             thread_type="$thread"
6962     fi
6963 done
6964
6965 if disabled stdatomic; then
6966     if enabled atomics_gcc; then
6967         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6968     elif enabled atomics_win32; then
6969         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6970     elif enabled atomics_suncc; then
6971         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6972     elif enabled pthreads; then
6973         add_compat atomics/pthread/stdatomic.o
6974         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6975     else
6976         enabled threads && die "Threading is enabled, but no atomics are available"
6977         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6978     fi
6979 fi
6980
6981 # Check if requested libraries were found.
6982 for lib in $AUTODETECT_LIBS; do
6983     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6984 done
6985
6986 enabled zlib && add_cppflags -DZLIB_CONST
6987
6988 # conditional library dependencies, in any order
6989 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6990 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6991 enabled afir_filter         && prepend avfilter_deps "avcodec"
6992 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6993 enabled aresample_filter    && prepend avfilter_deps "swresample"
6994 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6995 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6996 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6997 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6998 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6999 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7000 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7001 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7002 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7003 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7004 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7005 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7006 enabled pan_filter          && prepend avfilter_deps "swresample"
7007 enabled pp_filter           && prepend avfilter_deps "postproc"
7008 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7009 enabled resample_filter && prepend avfilter_deps "avresample"
7010 enabled sab_filter          && prepend avfilter_deps "swscale"
7011 enabled scale_filter    && prepend avfilter_deps "swscale"
7012 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7013 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7014 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7015 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7016 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7017 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7018 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7019 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7020 enabled spp_filter          && prepend avfilter_deps "avcodec"
7021 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7022 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7023 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7024 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7025
7026 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7027
7028 #FIXME
7029 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7030     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7031
7032 enabled opus_decoder    && prepend avcodec_deps "swresample"
7033
7034 # reorder the items at var $1 to align with the items order at var $2 .
7035 # die if an item at $1 is not at $2 .
7036 reorder_by(){
7037     eval rb_in=\$$1
7038     eval rb_ordered=\$$2
7039
7040     for rb in $rb_in; do
7041         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7042     done
7043
7044     rb_out=
7045     for rb in $rb_ordered; do
7046         is_in $rb $rb_in && rb_out="$rb_out$rb "
7047     done
7048     eval $1=\$rb_out
7049 }
7050
7051 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7052 # within a set of N items, N expansions are enough to expose a cycle.
7053 expand_deps(){
7054     unique ${1}_deps  # required for the early break test.
7055     for dummy in $LIBRARY_LIST; do  # N iteratios
7056         eval deps=\$${1}_deps
7057         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7058         unique ${1}_deps
7059         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7060     done
7061
7062     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7063     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7064 }
7065
7066 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7067 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7068
7069 map 'expand_deps $v' $LIBRARY_LIST
7070
7071 if test "$quiet" != "yes"; then
7072
7073 echo "install prefix            $prefix"
7074 echo "source path               $source_path"
7075 echo "C compiler                $cc"
7076 echo "C library                 $libc_type"
7077 if test "$host_cc" != "$cc"; then
7078     echo "host C compiler           $host_cc"
7079     echo "host C library            $host_libc_type"
7080 fi
7081 echo "ARCH                      $arch ($cpu)"
7082 if test "$build_suffix" != ""; then
7083     echo "build suffix              $build_suffix"
7084 fi
7085 if test "$progs_suffix" != ""; then
7086     echo "progs suffix              $progs_suffix"
7087 fi
7088 if test "$extra_version" != ""; then
7089     echo "version string suffix     $extra_version"
7090 fi
7091 echo "big-endian                ${bigendian-no}"
7092 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7093 if enabled x86; then
7094     echo "standalone assembly       ${x86asm-no}"
7095     echo "x86 assembler             ${x86asmexe}"
7096     echo "MMX enabled               ${mmx-no}"
7097     echo "MMXEXT enabled            ${mmxext-no}"
7098     echo "3DNow! enabled            ${amd3dnow-no}"
7099     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7100     echo "SSE enabled               ${sse-no}"
7101     echo "SSSE3 enabled             ${ssse3-no}"
7102     echo "AESNI enabled             ${aesni-no}"
7103     echo "AVX enabled               ${avx-no}"
7104     echo "AVX2 enabled              ${avx2-no}"
7105     echo "AVX-512 enabled           ${avx512-no}"
7106     echo "XOP enabled               ${xop-no}"
7107     echo "FMA3 enabled              ${fma3-no}"
7108     echo "FMA4 enabled              ${fma4-no}"
7109     echo "i686 features enabled     ${i686-no}"
7110     echo "CMOV is fast              ${fast_cmov-no}"
7111     echo "EBX available             ${ebx_available-no}"
7112     echo "EBP available             ${ebp_available-no}"
7113 fi
7114 if enabled aarch64; then
7115     echo "NEON enabled              ${neon-no}"
7116     echo "VFP enabled               ${vfp-no}"
7117 fi
7118 if enabled arm; then
7119     echo "ARMv5TE enabled           ${armv5te-no}"
7120     echo "ARMv6 enabled             ${armv6-no}"
7121     echo "ARMv6T2 enabled           ${armv6t2-no}"
7122     echo "VFP enabled               ${vfp-no}"
7123     echo "NEON enabled              ${neon-no}"
7124     echo "THUMB enabled             ${thumb-no}"
7125 fi
7126 if enabled mips; then
7127     echo "MIPS FPU enabled          ${mipsfpu-no}"
7128     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7129     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7130     echo "MIPS MSA enabled          ${msa-no}"
7131     echo "LOONGSON MMI enabled      ${mmi-no}"
7132 fi
7133 if enabled ppc; then
7134     echo "AltiVec enabled           ${altivec-no}"
7135     echo "VSX enabled               ${vsx-no}"
7136     echo "POWER8 enabled            ${power8-no}"
7137     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7138     echo "dcbzl available           ${dcbzl-no}"
7139 fi
7140 echo "debug symbols             ${debug-no}"
7141 echo "strip symbols             ${stripping-no}"
7142 echo "optimize for size         ${small-no}"
7143 echo "optimizations             ${optimizations-no}"
7144 echo "static                    ${static-no}"
7145 echo "shared                    ${shared-no}"
7146 echo "postprocessing support    ${postproc-no}"
7147 echo "network support           ${network-no}"
7148 echo "threading support         ${thread_type-no}"
7149 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7150 echo "texi2html enabled         ${texi2html-no}"
7151 echo "perl enabled              ${perl-no}"
7152 echo "pod2man enabled           ${pod2man-no}"
7153 echo "makeinfo enabled          ${makeinfo-no}"
7154 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7155 test -n "$random_seed" &&
7156     echo "random seed               ${random_seed}"
7157 echo
7158
7159 echo "External libraries:"
7160 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7161 echo
7162
7163 echo "External libraries providing hardware acceleration:"
7164 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7165 echo
7166
7167 echo "Libraries:"
7168 print_enabled '' $LIBRARY_LIST | print_in_columns
7169 echo
7170
7171 echo "Programs:"
7172 print_enabled '' $PROGRAM_LIST | print_in_columns
7173 echo
7174
7175 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7176     echo "Enabled ${type}s:"
7177     eval list=\$$(toupper $type)_LIST
7178     print_enabled '_*' $list | print_in_columns
7179     echo
7180 done
7181
7182 if test -n "$ignore_tests"; then
7183     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7184     echo "Ignored FATE tests:"
7185     echo $ignore_tests | print_in_columns
7186     echo
7187 fi
7188
7189 echo "License: $license"
7190
7191 fi # test "$quiet" != "yes"
7192
7193 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7194     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7195         if disabled $cfg; then
7196             varname=${cfg}_disable_reason
7197             eval "warn \"Disabled $cfg because \$$varname\""
7198         fi
7199     done
7200 fi
7201
7202 if test -n "$WARNINGS"; then
7203     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7204     enabled fatal_warnings && exit 1
7205 fi
7206
7207 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7208
7209 esc(){
7210     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7211 }
7212
7213 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7214
7215 enabled stripping || strip="echo skipping strip"
7216 enabled stripping || striptype=""
7217
7218 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7219
7220 cat > ffbuild/config.mak <<EOF
7221 # Automatically generated by configure - do not modify!
7222 ifndef FFMPEG_CONFIG_MAK
7223 FFMPEG_CONFIG_MAK=1
7224 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7225 prefix=$prefix
7226 LIBDIR=\$(DESTDIR)$libdir
7227 SHLIBDIR=\$(DESTDIR)$shlibdir
7228 INCDIR=\$(DESTDIR)$incdir
7229 BINDIR=\$(DESTDIR)$bindir
7230 DATADIR=\$(DESTDIR)$datadir
7231 DOCDIR=\$(DESTDIR)$docdir
7232 MANDIR=\$(DESTDIR)$mandir
7233 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7234 INSTALL_NAME_DIR=$install_name_dir
7235 SRC_PATH=$source_path
7236 SRC_LINK=$source_link
7237 ifndef MAIN_MAKEFILE
7238 SRC_PATH:=\$(SRC_PATH:.%=..%)
7239 endif
7240 CC_IDENT=$cc_ident
7241 ARCH=$arch
7242 INTRINSICS=$intrinsics
7243 EXTERN_PREFIX=$extern_prefix
7244 CC=$cc
7245 CXX=$cxx
7246 AS=$as
7247 OBJCC=$objcc
7248 LD=$ld
7249 DEPCC=$dep_cc
7250 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7251 DEPAS=$as
7252 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7253 X86ASM=$x86asmexe
7254 DEPX86ASM=$x86asmexe
7255 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7256 AR=$ar
7257 ARFLAGS=$arflags
7258 AR_O=$ar_o
7259 AR_CMD=$ar
7260 NM_CMD=$nm
7261 RANLIB=$ranlib
7262 STRIP=$strip
7263 STRIPTYPE=$striptype
7264 NVCC=$nvcc
7265 CP=cp -p
7266 LN_S=$ln_s
7267 CPPFLAGS=$CPPFLAGS
7268 CFLAGS=$CFLAGS
7269 CXXFLAGS=$CXXFLAGS
7270 OBJCFLAGS=$OBJCFLAGS
7271 ASFLAGS=$ASFLAGS
7272 NVCCFLAGS=$nvccflags
7273 AS_C=$AS_C
7274 AS_O=$AS_O
7275 OBJCC_C=$OBJCC_C
7276 OBJCC_E=$OBJCC_E
7277 OBJCC_O=$OBJCC_O
7278 CC_C=$CC_C
7279 CC_E=$CC_E
7280 CC_O=$CC_O
7281 CXX_C=$CXX_C
7282 CXX_O=$CXX_O
7283 NVCC_C=$NVCC_C
7284 NVCC_O=$NVCC_O
7285 LD_O=$LD_O
7286 X86ASM_O=$X86ASM_O
7287 LD_LIB=$LD_LIB
7288 LD_PATH=$LD_PATH
7289 DLLTOOL=$dlltool
7290 WINDRES=$windres
7291 DEPWINDRES=$dep_cc
7292 DOXYGEN=$doxygen
7293 LDFLAGS=$LDFLAGS
7294 LDEXEFLAGS=$LDEXEFLAGS
7295 LDSOFLAGS=$LDSOFLAGS
7296 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7297 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7298 X86ASMFLAGS=$X86ASMFLAGS
7299 BUILDSUF=$build_suffix
7300 PROGSSUF=$progs_suffix
7301 FULLNAME=$FULLNAME
7302 LIBPREF=$LIBPREF
7303 LIBSUF=$LIBSUF
7304 LIBNAME=$LIBNAME
7305 SLIBPREF=$SLIBPREF
7306 SLIBSUF=$SLIBSUF
7307 EXESUF=$EXESUF
7308 EXTRA_VERSION=$extra_version
7309 CCDEP=$CCDEP
7310 CXXDEP=$CXXDEP
7311 CCDEP_FLAGS=$CCDEP_FLAGS
7312 ASDEP=$ASDEP
7313 ASDEP_FLAGS=$ASDEP_FLAGS
7314 X86ASMDEP=$X86ASMDEP
7315 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7316 CC_DEPFLAGS=$CC_DEPFLAGS
7317 AS_DEPFLAGS=$AS_DEPFLAGS
7318 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7319 HOSTCC=$host_cc
7320 HOSTLD=$host_ld
7321 HOSTCFLAGS=$host_cflags
7322 HOSTCPPFLAGS=$host_cppflags
7323 HOSTEXESUF=$HOSTEXESUF
7324 HOSTLDFLAGS=$host_ldflags
7325 HOSTEXTRALIBS=$host_extralibs
7326 DEPHOSTCC=$host_cc
7327 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7328 HOSTCCDEP=$HOSTCCDEP
7329 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7330 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7331 HOSTCC_C=$HOSTCC_C
7332 HOSTCC_O=$HOSTCC_O
7333 HOSTLD_O=$HOSTLD_O
7334 TARGET_EXEC=$target_exec $target_exec_args
7335 TARGET_PATH=$target_path
7336 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7337 CFLAGS-ffplay=${sdl2_cflags}
7338 CFLAGS_HEADERS=$CFLAGS_HEADERS
7339 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7340 EXTRALIBS=$extralibs
7341 COMPAT_OBJS=$compat_objs
7342 INSTALL=$install
7343 LIBTARGET=${LIBTARGET}
7344 SLIBNAME=${SLIBNAME}
7345 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7346 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7347 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7348 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7349 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7350 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7351 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7352 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7353 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7354 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7355 NOREDZONE_FLAGS=$noredzone_flags
7356 LIBFUZZER_PATH=$libfuzzer_path
7357 IGNORE_TESTS=$ignore_tests
7358 EOF
7359
7360 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7361
7362 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7363     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7364 done
7365
7366 cat > $TMPH <<EOF
7367 /* Automatically generated by configure - do not modify! */
7368 #ifndef FFMPEG_CONFIG_H
7369 #define FFMPEG_CONFIG_H
7370 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7371 #define FFMPEG_LICENSE "$(c_escape $license)"
7372 #define CONFIG_THIS_YEAR 2019
7373 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7374 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7375 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7376 #define av_restrict $restrict_keyword
7377 #define EXTERN_PREFIX "${extern_prefix}"
7378 #define EXTERN_ASM ${extern_prefix}
7379 #define BUILDSUF "$build_suffix"
7380 #define SLIBSUF "$SLIBSUF"
7381 #define HAVE_MMX2 HAVE_MMXEXT
7382 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7383 EOF
7384
7385 test -n "$assert_level" &&
7386     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7387
7388 test -n "$malloc_prefix" &&
7389     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7390
7391 if enabled x86asm; then
7392     append config_files $TMPASM
7393     cat > $TMPASM <<EOF
7394 ; Automatically generated by configure - do not modify!
7395 EOF
7396 fi
7397
7398 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7399
7400
7401 mkdir -p doc
7402 mkdir -p tests
7403 mkdir -p tests/api
7404 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7405
7406 print_config ARCH_   "$config_files" $ARCH_LIST
7407 print_config HAVE_   "$config_files" $HAVE_LIST
7408 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7409                                      $CONFIG_EXTRA      \
7410                                      $ALL_COMPONENTS    \
7411
7412 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7413 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7414
7415 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7416 cp_if_changed $TMPH config.h
7417 touch ffbuild/.config
7418
7419 enabled x86asm && cp_if_changed $TMPASM config.asm
7420
7421 cat > $TMPH <<EOF
7422 /* Generated by ffmpeg configure */
7423 #ifndef AVUTIL_AVCONFIG_H
7424 #define AVUTIL_AVCONFIG_H
7425 EOF
7426
7427 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7428
7429 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7430
7431 cp_if_changed $TMPH libavutil/avconfig.h
7432
7433 # full_filter_name_foo=vf_foo
7434 # full_filter_name_bar=asrc_bar
7435 # ...
7436 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7437
7438 # generate the lists of enabled components
7439 print_enabled_components(){
7440     file=$1
7441     struct_name=$2
7442     name=$3
7443     shift 3
7444     echo "static const $struct_name * const $name[] = {" > $TMPH
7445     for c in $*; do
7446         if enabled $c; then
7447             case $name in
7448                 filter_list)
7449                     eval c=\$full_filter_name_${c%_filter}
7450                 ;;
7451                 indev_list)
7452                     c=${c%_indev}_demuxer
7453                 ;;
7454                 outdev_list)
7455                     c=${c%_outdev}_muxer
7456                 ;;
7457             esac
7458             printf "    &ff_%s,\n" $c >> $TMPH
7459         fi
7460     done
7461     if [ "$name" = "filter_list" ]; then
7462         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7463             printf "    &ff_%s,\n" $c >> $TMPH
7464         done
7465     fi
7466     echo "    NULL };" >> $TMPH
7467     cp_if_changed $TMPH $file
7468 }
7469
7470 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7471 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7472 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7473 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7474 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7475 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7476 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7477 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7478 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7479
7480 # Settings for pkg-config files
7481
7482 cat > $TMPH <<EOF
7483 # Automatically generated by configure - do not modify!
7484 shared=$shared
7485 build_suffix=$build_suffix
7486 prefix=$prefix
7487 libdir=$libdir
7488 incdir=$incdir
7489 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7490 source_path=${source_path}
7491 LIBPREF=${LIBPREF}
7492 LIBSUF=${LIBSUF}
7493 extralibs_avutil="$avutil_extralibs"
7494 extralibs_avcodec="$avcodec_extralibs"
7495 extralibs_avformat="$avformat_extralibs"
7496 extralibs_avdevice="$avdevice_extralibs"
7497 extralibs_avfilter="$avfilter_extralibs"
7498 extralibs_avresample="$avresample_extralibs"
7499 extralibs_postproc="$postproc_extralibs"
7500 extralibs_swscale="$swscale_extralibs"
7501 extralibs_swresample="$swresample_extralibs"
7502 EOF
7503
7504 for lib in $LIBRARY_LIST; do
7505     lib_deps="$(eval echo \$${lib}_deps)"
7506     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7507 done
7508
7509 cp_if_changed $TMPH ffbuild/config.sh