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-libndi_newtek   enable Newteck NDI I/O support [no]
 302   --enable-mbedtls         enable mbedTLS, needed for https support
 303                            if openssl, gnutls or libtls is not used [no]
 304   --enable-mediacodec      enable Android MediaCodec support [no]
 305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 306   --enable-openal          enable OpenAL 1.1 capture support [no]
 307   --enable-opencl          enable OpenCL processing [no]
 308   --enable-opengl          enable OpenGL rendering [no]
 309   --enable-openssl         enable openssl, needed for https support
 310                            if gnutls, libtls or mbedtls is not used [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-sdk        enable CUDA features that require the CUDA SDK [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     pr -n -t $1 >> $logfile
 508     log END $1
 509 }
 510
 511 warn(){
 512     log "WARNING: $*"
 513     WARNINGS="${WARNINGS}WARNING: $*\n"
 514 }
 515
 516 die(){
 517     log "$@"
 518     echo "$error_color$bold_color$@$reset_color"
 519     cat <<EOF
 520
 521 If you think configure made a mistake, make sure you are using the latest
 522 version from Git.  If the latest version fails, report the problem to the
 523 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 524 EOF
 525     if disabled logging; then
 526         cat <<EOF
 527 Rerun configure with logging enabled (do not use --disable-logging), and
 528 include the log this produces with your report.
 529 EOF
 530     else
 531         cat <<EOF
 532 Include the log file "$logfile" produced by configure as this will help
 533 solve the problem.
 534 EOF
 535     fi
 536     exit 1
 537 }
 538
 539 # Avoid locale weirdness, besides we really just want to translate ASCII.
 540 toupper(){
 541     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 542 }
 543
 544 tolower(){
 545     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 546 }
 547
 548 c_escape(){
 549     echo "$*" | sed 's/["\\]/\\\0/g'
 550 }
 551
 552 sh_quote(){
 553     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 554     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 555     echo "$v"
 556 }
 557
 558 cleanws(){
 559     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 560 }
 561
 562 filter(){
 563     pat=$1
 564     shift
 565     for v; do
 566         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 567     done
 568 }
 569
 570 filter_out(){
 571     pat=$1
 572     shift
 573     for v; do
 574         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 575     done
 576 }
 577
 578 map(){
 579     m=$1
 580     shift
 581     for v; do eval $m; done
 582 }
 583
 584 add_suffix(){
 585     suffix=$1
 586     shift
 587     for v; do echo ${v}${suffix}; done
 588 }
 589
 590 remove_suffix(){
 591     suffix=$1
 592     shift
 593     for v; do echo ${v%$suffix}; done
 594 }
 595
 596 set_all(){
 597     value=$1
 598     shift
 599     for var in $*; do
 600         eval $var=$value
 601     done
 602 }
 603
 604 set_weak(){
 605     value=$1
 606     shift
 607     for var; do
 608         eval : \${$var:=$value}
 609     done
 610 }
 611
 612 sanitize_var_name(){
 613     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 614 }
 615
 616 set_sanitized(){
 617     var=$1
 618     shift
 619     eval $(sanitize_var_name "$var")='$*'
 620 }
 621
 622 get_sanitized(){
 623     eval echo \$$(sanitize_var_name "$1")
 624 }
 625
 626 pushvar(){
 627     for pvar in $*; do
 628         eval level=\${${pvar}_level:=0}
 629         eval ${pvar}_${level}="\$$pvar"
 630         eval ${pvar}_level=$(($level+1))
 631     done
 632 }
 633
 634 popvar(){
 635     for pvar in $*; do
 636         eval level=\${${pvar}_level:-0}
 637         test $level = 0 && continue
 638         eval level=$(($level-1))
 639         eval $pvar="\${${pvar}_${level}}"
 640         eval ${pvar}_level=$level
 641         eval unset ${pvar}_${level}
 642     done
 643 }
 644
 645 request(){
 646     for var in $*; do
 647         eval ${var}_requested=yes
 648         eval $var=
 649     done
 650 }
 651
 652 enable(){
 653     set_all yes $*
 654 }
 655
 656 disable(){
 657     set_all no $*
 658 }
 659
 660 enable_weak(){
 661     set_weak yes $*
 662 }
 663
 664 disable_weak(){
 665     set_weak no $*
 666 }
 667
 668 enable_sanitized(){
 669     for var; do
 670         enable $(sanitize_var_name $var)
 671     done
 672 }
 673
 674 disable_sanitized(){
 675     for var; do
 676         disable $(sanitize_var_name $var)
 677     done
 678 }
 679
 680 do_enable_deep(){
 681     for var; do
 682         enabled $var && continue
 683         set -- $var
 684         eval enable_deep \$${var}_select
 685         var=$1
 686         eval enable_deep_weak \$${var}_suggest
 687     done
 688 }
 689
 690 enable_deep(){
 691     do_enable_deep $*
 692     enable $*
 693 }
 694
 695 enable_deep_weak(){
 696     for var; do
 697         disabled $var && continue
 698         set -- $var
 699         do_enable_deep $var
 700         var=$1
 701         enable_weak $var
 702     done
 703 }
 704
 705 requested(){
 706     test "${1#!}" = "$1" && op="=" || op="!="
 707     eval test "x\$${1#!}_requested" $op "xyes"
 708 }
 709
 710 enabled(){
 711     test "${1#!}" = "$1" && op="=" || op="!="
 712     eval test "x\$${1#!}" $op "xyes"
 713 }
 714
 715 disabled(){
 716     test "${1#!}" = "$1" && op="=" || op="!="
 717     eval test "x\$${1#!}" $op "xno"
 718 }
 719
 720 enabled_all(){
 721     for opt; do
 722         enabled $opt || return 1
 723     done
 724 }
 725
 726 disabled_all(){
 727     for opt; do
 728         disabled $opt || return 1
 729     done
 730 }
 731
 732 enabled_any(){
 733     for opt; do
 734         enabled $opt && return 0
 735     done
 736 }
 737
 738 disabled_any(){
 739     for opt; do
 740         disabled $opt && return 0
 741     done
 742     return 1
 743 }
 744
 745 set_default(){
 746     for opt; do
 747         eval : \${$opt:=\$${opt}_default}
 748     done
 749 }
 750
 751 is_in(){
 752     value=$1
 753     shift
 754     for var in $*; do
 755         [ $var = $value ] && return 0
 756     done
 757     return 1
 758 }
 759
 760 # The cfg loop is very hot (several thousands iterations), and in bash also
 761 # potentialy quite slow. Try to abort the iterations early, preferably without
 762 # calling functions. 70%+ of the time cfg is already done or without deps.
 763 check_deps(){
 764     for cfg; do
 765         eval [ x\$${cfg}_checking = xdone ] && continue
 766         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 767
 768         eval "
 769         dep_all=\$${cfg}_deps
 770         dep_any=\$${cfg}_deps_any
 771         dep_con=\$${cfg}_conflict
 772         dep_sel=\$${cfg}_select
 773         dep_sgs=\$${cfg}_suggest
 774         dep_ifa=\$${cfg}_if
 775         dep_ifn=\$${cfg}_if_any
 776         "
 777
 778         # most of the time here $cfg has no deps - avoid costly no-op work
 779         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 780             eval ${cfg}_checking=inprogress
 781
 782             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 783             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 784             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 785
 786             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 787             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 788             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 789             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 790             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 791             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 792
 793             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 794
 795             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 796                 # filter out library deps, these do not belong in extralibs
 797                 is_in $dep $LIBRARY_LIST && continue
 798                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 799             done
 800         fi
 801
 802         eval ${cfg}_checking=done
 803     done
 804 }
 805
 806 print_config(){
 807     pfx=$1
 808     files=$2
 809     shift 2
 810     map 'eval echo "$v \${$v:-no}"' "$@" |
 811     awk "BEGIN { split(\"$files\", files) }
 812         {
 813             c = \"$pfx\" toupper(\$1);
 814             v = \$2;
 815             sub(/yes/, 1, v);
 816             sub(/no/,  0, v);
 817             for (f in files) {
 818                 file = files[f];
 819                 if (file ~ /\\.h\$/) {
 820                     printf(\"#define %s %d\\n\", c, v) >>file;
 821                 } else if (file ~ /\\.asm\$/) {
 822                     printf(\"%%define %s %d\\n\", c, v) >>file;
 823                 } else if (file ~ /\\.mak\$/) {
 824                     n = -v ? \"\" : \"!\";
 825                     printf(\"%s%s=yes\\n\", n, c) >>file;
 826                 } else if (file ~ /\\.texi\$/) {
 827                     pre = -v ? \"\" : \"@c \";
 828                     yesno = \$2;
 829                     c2 = tolower(c);
 830                     gsub(/_/, \"-\", c2);
 831                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 832                 }
 833             }
 834         }"
 835 }
 836
 837 print_enabled(){
 838     suf=$1
 839     shift
 840     for v; do
 841         enabled $v && printf "%s\n" ${v%$suf}
 842     done
 843 }
 844
 845 append(){
 846     var=$1
 847     shift
 848     eval "$var=\"\$$var $*\""
 849 }
 850
 851 prepend(){
 852     var=$1
 853     shift
 854     eval "$var=\"$* \$$var\""
 855 }
 856
 857 reverse () {
 858     eval '
 859         reverse_out=
 860         for v in $'$1'; do
 861             reverse_out="$v $reverse_out"
 862         done
 863         '$1'=$reverse_out
 864     '
 865 }
 866
 867 # keeps the last occurence of each non-unique item
 868 unique(){
 869     unique_out=
 870     eval unique_in=\$$1
 871     reverse unique_in
 872     for v in $unique_in; do
 873         # " $unique_out" +space such that every item is surrounded with spaces
 874         case " $unique_out" in *" $v "*) continue; esac  # already in list
 875         unique_out="$unique_out$v "
 876     done
 877     reverse unique_out
 878     eval $1=\$unique_out
 879 }
 880
 881 resolve(){
 882     resolve_out=
 883     eval resolve_in=\$$1
 884     for v in $resolve_in; do
 885         eval 'resolve_out="$resolve_out$'$v' "'
 886     done
 887     eval $1=\$resolve_out
 888 }
 889
 890 add_cppflags(){
 891     append CPPFLAGS "$@"
 892 }
 893
 894 add_cflags(){
 895     append CFLAGS $($cflags_filter "$@")
 896 }
 897
 898 add_cflags_headers(){
 899     append CFLAGS_HEADERS $($cflags_filter "$@")
 900 }
 901
 902 add_cxxflags(){
 903     append CXXFLAGS $($cflags_filter "$@")
 904 }
 905
 906 add_objcflags(){
 907     append OBJCFLAGS $($objcflags_filter "$@")
 908 }
 909
 910 add_asflags(){
 911     append ASFLAGS $($asflags_filter "$@")
 912 }
 913
 914 add_ldflags(){
 915     append LDFLAGS $($ldflags_filter "$@")
 916 }
 917
 918 add_ldexeflags(){
 919     append LDEXEFLAGS $($ldflags_filter "$@")
 920 }
 921
 922 add_ldsoflags(){
 923     append LDSOFLAGS $($ldflags_filter "$@")
 924 }
 925
 926 add_extralibs(){
 927     prepend extralibs $($ldflags_filter "$@")
 928 }
 929
 930 add_stripflags(){
 931     append ASMSTRIPFLAGS "$@"
 932 }
 933
 934 add_host_cppflags(){
 935     append host_cppflags "$@"
 936 }
 937
 938 add_host_cflags(){
 939     append host_cflags $($host_cflags_filter "$@")
 940 }
 941
 942 add_host_ldflags(){
 943     append host_ldflags $($host_ldflags_filter "$@")
 944 }
 945
 946 add_compat(){
 947     append compat_objs $1
 948     shift
 949     map 'add_cppflags -D$v' "$@"
 950 }
 951
 952 test_cmd(){
 953     log "$@"
 954     "$@" >> $logfile 2>&1
 955 }
 956
 957 test_stat(){
 958     log test_stat "$@"
 959     stat "$1" >> $logfile 2>&1
 960 }
 961
 962 cc_e(){
 963     eval printf '%s\\n' $CC_E
 964 }
 965
 966 cc_o(){
 967     eval printf '%s\\n' $CC_O
 968 }
 969
 970 as_o(){
 971     eval printf '%s\\n' $AS_O
 972 }
 973
 974 x86asm_o(){
 975     eval printf '%s\\n' $X86ASM_O
 976 }
 977
 978 ld_o(){
 979     eval printf '%s\\n' $LD_O
 980 }
 981
 982 hostcc_e(){
 983     eval printf '%s\\n' $HOSTCC_E
 984 }
 985
 986 hostcc_o(){
 987     eval printf '%s\\n' $HOSTCC_O
 988 }
 989
 990 test_cc(){
 991     log test_cc "$@"
 992     cat > $TMPC
 993     log_file $TMPC
 994     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 995 }
 996
 997 test_cxx(){
 998     log test_cxx "$@"
 999     cat > $TMPCPP
1000     log_file $TMPCPP
1001     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1002 }
1003
1004 test_objcc(){
1005     log test_objcc "$@"
1006     cat > $TMPM
1007     log_file $TMPM
1008     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1009 }
1010
1011 test_cpp(){
1012     log test_cpp "$@"
1013     cat > $TMPC
1014     log_file $TMPC
1015     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1016 }
1017
1018 test_as(){
1019     log test_as "$@"
1020     cat > $TMPS
1021     log_file $TMPS
1022     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1023 }
1024
1025 test_x86asm(){
1026     log test_x86asm "$@"
1027     echo "$1" > $TMPASM
1028     log_file $TMPASM
1029     shift
1030     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1031 }
1032
1033 check_cmd(){
1034     log check_cmd "$@"
1035     cmd=$1
1036     disabled $cmd && return
1037     disable $cmd
1038     test_cmd $@ && enable $cmd
1039 }
1040
1041 check_as(){
1042     log check_as "$@"
1043     name=$1
1044     code=$2
1045     shift 2
1046     disable $name
1047     test_as $@ <<EOF && enable $name
1048 $code
1049 EOF
1050 }
1051
1052 check_inline_asm(){
1053     log check_inline_asm "$@"
1054     name="$1"
1055     code="$2"
1056     shift 2
1057     disable $name
1058     test_cc "$@" <<EOF && enable $name
1059 void foo(void){ __asm__ volatile($code); }
1060 EOF
1061 }
1062
1063 check_inline_asm_flags(){
1064     log check_inline_asm_flags "$@"
1065     name="$1"
1066     code="$2"
1067     flags=''
1068     shift 2
1069     while [ "$1" != "" ]; do
1070       append flags $1
1071       shift
1072     done;
1073     disable $name
1074     cat > $TMPC <<EOF
1075 void foo(void){ __asm__ volatile($code); }
1076 EOF
1077     log_file $TMPC
1078     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1079     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1080 }
1081
1082 check_insn(){
1083     log check_insn "$@"
1084     check_inline_asm ${1}_inline "\"$2\""
1085     check_as ${1}_external "$2"
1086 }
1087
1088 check_x86asm(){
1089     log check_x86asm "$@"
1090     name=$1
1091     shift
1092     disable $name
1093     test_x86asm "$@" && enable $name
1094 }
1095
1096 test_ld(){
1097     log test_ld "$@"
1098     type=$1
1099     shift 1
1100     flags=$(filter_out '-l*|*.so' $@)
1101     libs=$(filter '-l*|*.so' $@)
1102     test_$type $($cflags_filter $flags) || return
1103     flags=$($ldflags_filter $flags)
1104     libs=$($ldflags_filter $libs)
1105     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1106 }
1107
1108 check_ld(){
1109     log check_ld "$@"
1110     type=$1
1111     name=$2
1112     shift 2
1113     disable $name
1114     test_ld $type $@ && enable $name
1115 }
1116
1117 print_include(){
1118     hdr=$1
1119     test "${hdr%.h}" = "${hdr}" &&
1120         echo "#include $hdr"    ||
1121         echo "#include <$hdr>"
1122 }
1123
1124 test_code(){
1125     log test_code "$@"
1126     check=$1
1127     headers=$2
1128     code=$3
1129     shift 3
1130     {
1131         for hdr in $headers; do
1132             print_include $hdr
1133         done
1134         echo "int main(void) { $code; return 0; }"
1135     } | test_$check "$@"
1136 }
1137
1138 check_cppflags(){
1139     log check_cppflags "$@"
1140     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1141 #include <stdlib.h>
1142 EOF
1143 }
1144
1145 test_cflags(){
1146     log test_cflags "$@"
1147     set -- $($cflags_filter "$@")
1148     test_cc "$@" <<EOF
1149 int x;
1150 EOF
1151 }
1152
1153 check_cflags(){
1154     log check_cflags "$@"
1155     test_cflags "$@" && add_cflags "$@"
1156 }
1157
1158 check_cxxflags(){
1159     log check_cxxflags "$@"
1160     set -- $($cflags_filter "$@")
1161     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1162 int x;
1163 EOF
1164 }
1165
1166 test_objcflags(){
1167     log test_objcflags "$@"
1168     set -- $($objcflags_filter "$@")
1169     test_objcc "$@" <<EOF
1170 int x;
1171 EOF
1172 }
1173
1174 check_objcflags(){
1175     log check_objcflags "$@"
1176     test_objcflags "$@" && add_objcflags "$@"
1177 }
1178
1179 test_ldflags(){
1180     log test_ldflags "$@"
1181     set -- $($ldflags_filter "$@")
1182     test_ld "cc" "$@" <<EOF
1183 int main(void){ return 0; }
1184 EOF
1185 }
1186
1187 check_ldflags(){
1188     log check_ldflags "$@"
1189     test_ldflags "$@" && add_ldflags "$@"
1190 }
1191
1192 test_stripflags(){
1193     log test_stripflags "$@"
1194     # call test_cc to get a fresh TMPO
1195     test_cc <<EOF
1196 int main(void) { return 0; }
1197 EOF
1198     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1199 }
1200
1201 check_stripflags(){
1202     log check_stripflags "$@"
1203     test_stripflags "$@" && add_stripflags "$@"
1204 }
1205
1206 check_headers(){
1207     log check_headers "$@"
1208     headers=$1
1209     shift
1210     disable_sanitized $headers
1211     {
1212         for hdr in $headers; do
1213             print_include $hdr
1214         done
1215         echo "int x;"
1216     } | test_cpp "$@" && enable_sanitized $headers
1217 }
1218
1219 check_header_objcc(){
1220     log check_header_objcc "$@"
1221     rm -f -- "$TMPO"
1222     header=$1
1223     shift
1224     disable_sanitized $header
1225     {
1226        echo "#include <$header>"
1227        echo "int main(void) { return 0; }"
1228     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1229 }
1230
1231 check_apple_framework(){
1232     log check_apple_framework "$@"
1233     framework="$1"
1234     name="$(tolower $framework)"
1235     header="${framework}/${framework}.h"
1236     disable $name
1237     check_header_objcc $header &&
1238         enable $name && eval ${name}_extralibs='"-framework $framework"'
1239 }
1240
1241 check_func(){
1242     log check_func "$@"
1243     func=$1
1244     shift
1245     disable $func
1246     test_ld "cc" "$@" <<EOF && enable $func
1247 extern int $func();
1248 int main(void){ $func(); }
1249 EOF
1250 }
1251
1252 check_complexfunc(){
1253     log check_complexfunc "$@"
1254     func=$1
1255     narg=$2
1256     shift 2
1257     test $narg = 2 && args="f, g" || args="f * I"
1258     disable $func
1259     test_ld "cc" "$@" <<EOF && enable $func
1260 #include <complex.h>
1261 #include <math.h>
1262 float foo(complex float f, complex float g) { return $func($args); }
1263 int main(void){ return (int) foo; }
1264 EOF
1265 }
1266
1267 check_mathfunc(){
1268     log check_mathfunc "$@"
1269     func=$1
1270     narg=$2
1271     shift 2
1272     test $narg = 2 && args="f, g" || args="f"
1273     disable $func
1274     test_ld "cc" "$@" <<EOF && enable $func
1275 #include <math.h>
1276 float foo(float f, float g) { return $func($args); }
1277 int main(void){ return (int) foo; }
1278 EOF
1279 }
1280
1281 check_func_headers(){
1282     log check_func_headers "$@"
1283     headers=$1
1284     funcs=$2
1285     shift 2
1286     {
1287         for hdr in $headers; do
1288             print_include $hdr
1289         done
1290         echo "#include <stdint.h>"
1291         for func in $funcs; do
1292             echo "long check_$func(void) { return (long) $func; }"
1293         done
1294         echo "int main(void) { int ret = 0;"
1295         # LTO could optimize out the test functions without this
1296         for func in $funcs; do
1297             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1298         done
1299         echo "return ret; }"
1300     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1301 }
1302
1303 check_class_headers_cpp(){
1304     log check_class_headers_cpp "$@"
1305     headers=$1
1306     classes=$2
1307     shift 2
1308     {
1309         for hdr in $headers; do
1310             echo "#include <$hdr>"
1311         done
1312         echo "int main(void) { "
1313         i=1
1314         for class in $classes; do
1315             echo "$class obj$i;"
1316             i=$(expr $i + 1)
1317         done
1318         echo "return 0; }"
1319     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1320 }
1321
1322 test_cpp_condition(){
1323     log test_cpp_condition "$@"
1324     header=$1
1325     condition=$2
1326     shift 2
1327     test_cpp "$@" <<EOF
1328 #include <$header>
1329 #if !($condition)
1330 #error "unsatisfied condition: $condition"
1331 #endif
1332 EOF
1333 }
1334
1335 check_cpp_condition(){
1336     log check_cpp_condition "$@"
1337     name=$1
1338     shift 1
1339     disable $name
1340     test_cpp_condition "$@" && enable $name
1341 }
1342
1343 test_cflags_cc(){
1344     log test_cflags_cc "$@"
1345     flags=$1
1346     header=$2
1347     condition=$3
1348     shift 3
1349     set -- $($cflags_filter "$flags")
1350     test_cc "$@" <<EOF
1351 #include <$header>
1352 #if !($condition)
1353 #error "unsatisfied condition: $condition"
1354 #endif
1355 EOF
1356 }
1357
1358 check_lib(){
1359     log check_lib "$@"
1360     name="$1"
1361     headers="$2"
1362     funcs="$3"
1363     shift 3
1364     disable $name
1365     check_func_headers "$headers" "$funcs" "$@" &&
1366         enable $name && eval ${name}_extralibs="\$@"
1367 }
1368
1369 check_lib_cpp(){
1370     log check_lib_cpp "$@"
1371     name="$1"
1372     headers="$2"
1373     classes="$3"
1374     shift 3
1375     disable $name
1376     check_class_headers_cpp "$headers" "$classes" "$@" &&
1377         enable $name && eval ${name}_extralibs="\$@"
1378 }
1379
1380 test_pkg_config(){
1381     log test_pkg_config "$@"
1382     name="$1"
1383     pkg_version="$2"
1384     pkg="${2%% *}"
1385     headers="$3"
1386     funcs="$4"
1387     shift 4
1388     disable $name
1389     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1390     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1391     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1392     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1393         enable $name &&
1394         set_sanitized "${name}_cflags"    $pkg_cflags &&
1395         set_sanitized "${name}_extralibs" $pkg_libs
1396 }
1397
1398 check_pkg_config(){
1399     log check_pkg_config "$@"
1400     name="$1"
1401     test_pkg_config "$@" &&
1402         eval add_cflags \$${name}_cflags
1403 }
1404
1405 test_exec(){
1406     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1407 }
1408
1409 check_exec_crash(){
1410     log check_exec_crash "$@"
1411     code=$(cat)
1412
1413     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1414     # are safe but may not be available everywhere.  Thus we use
1415     # raise(SIGTERM) instead.  The check is run in a subshell so we
1416     # can redirect the "Terminated" message from the shell.  SIGBUS
1417     # is not defined by standard C so it is used conditionally.
1418
1419     (test_exec "$@") >> $logfile 2>&1 <<EOF
1420 #include <signal.h>
1421 static void sighandler(int sig){
1422     raise(SIGTERM);
1423 }
1424 int foo(void){
1425     $code
1426 }
1427 int (*func_ptr)(void) = foo;
1428 int main(void){
1429     signal(SIGILL, sighandler);
1430     signal(SIGFPE, sighandler);
1431     signal(SIGSEGV, sighandler);
1432 #ifdef SIGBUS
1433     signal(SIGBUS, sighandler);
1434 #endif
1435     return func_ptr();
1436 }
1437 EOF
1438 }
1439
1440 check_type(){
1441     log check_type "$@"
1442     headers=$1
1443     type=$2
1444     shift 2
1445     disable_sanitized "$type"
1446     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1447 }
1448
1449 check_struct(){
1450     log check_struct "$@"
1451     headers=$1
1452     struct=$2
1453     member=$3
1454     shift 3
1455     disable_sanitized "${struct}_${member}"
1456     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1457         enable_sanitized "${struct}_${member}"
1458 }
1459
1460 check_builtin(){
1461     log check_builtin "$@"
1462     name=$1
1463     headers=$2
1464     builtin=$3
1465     shift 3
1466     disable "$name"
1467     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1468 }
1469
1470 check_compile_assert(){
1471     log check_compile_assert "$@"
1472     name=$1
1473     headers=$2
1474     condition=$3
1475     shift 3
1476     disable "$name"
1477     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1478 }
1479
1480 check_cc(){
1481     log check_cc "$@"
1482     name=$1
1483     shift
1484     disable "$name"
1485     test_code cc "$@" && enable "$name"
1486 }
1487
1488 require(){
1489     log require "$@"
1490     name_version="$1"
1491     name="${1%% *}"
1492     shift
1493     check_lib $name "$@" || die "ERROR: $name_version not found"
1494 }
1495
1496 require_cc(){
1497     log require_cc "$@"
1498     name="$1"
1499     check_cc "$@" || die "ERROR: $name failed"
1500 }
1501
1502 require_cpp(){
1503     name="$1"
1504     headers="$2"
1505     classes="$3"
1506     shift 3
1507     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1508 }
1509
1510 require_headers(){
1511     log require_headers "$@"
1512     headers="$1"
1513     check_headers "$@" || die "ERROR: $headers not found"
1514 }
1515
1516 require_cpp_condition(){
1517     log require_cpp_condition "$@"
1518     condition="$3"
1519     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1520 }
1521
1522 require_pkg_config(){
1523     log require_pkg_config "$@"
1524     pkg_version="$2"
1525     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1526 }
1527
1528 test_host_cc(){
1529     log test_host_cc "$@"
1530     cat > $TMPC
1531     log_file $TMPC
1532     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1533 }
1534
1535 test_host_cpp(){
1536     log test_host_cpp "$@"
1537     cat > $TMPC
1538     log_file $TMPC
1539     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1540 }
1541
1542 check_host_cppflags(){
1543     log check_host_cppflags "$@"
1544     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1545 #include <stdlib.h>
1546 EOF
1547 }
1548
1549 check_host_cflags(){
1550     log check_host_cflags "$@"
1551     set -- $($host_cflags_filter "$@")
1552     test_host_cc "$@" <<EOF && append host_cflags "$@"
1553 int x;
1554 EOF
1555 }
1556
1557 test_host_cpp_condition(){
1558     log test_host_cpp_condition "$@"
1559     header=$1
1560     condition=$2
1561     shift 2
1562     test_host_cpp "$@" <<EOF
1563 #include <$header>
1564 #if !($condition)
1565 #error "unsatisfied condition: $condition"
1566 #endif
1567 EOF
1568 }
1569
1570 check_host_cpp_condition(){
1571     log check_host_cpp_condition "$@"
1572     name=$1
1573     shift 1
1574     disable $name
1575     test_host_cpp_condition "$@" && enable $name
1576 }
1577
1578 cp_if_changed(){
1579     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1580     mkdir -p "$(dirname $2)"
1581     cp -f "$1" "$2"
1582 }
1583
1584 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1585 # system-dependent things.
1586
1587 AVCODEC_COMPONENTS="
1588     bsfs
1589     decoders
1590     encoders
1591     hwaccels
1592     parsers
1593 "
1594
1595 AVDEVICE_COMPONENTS="
1596     indevs
1597     outdevs
1598 "
1599
1600 AVFILTER_COMPONENTS="
1601     filters
1602 "
1603
1604 AVFORMAT_COMPONENTS="
1605     demuxers
1606     muxers
1607     protocols
1608 "
1609
1610 COMPONENT_LIST="
1611     $AVCODEC_COMPONENTS
1612     $AVDEVICE_COMPONENTS
1613     $AVFILTER_COMPONENTS
1614     $AVFORMAT_COMPONENTS
1615 "
1616
1617 EXAMPLE_LIST="
1618     avio_dir_cmd_example
1619     avio_reading_example
1620     decode_audio_example
1621     decode_video_example
1622     demuxing_decoding_example
1623     encode_audio_example
1624     encode_video_example
1625     extract_mvs_example
1626     filter_audio_example
1627     filtering_audio_example
1628     filtering_video_example
1629     http_multiclient_example
1630     hw_decode_example
1631     metadata_example
1632     muxing_example
1633     qsvdec_example
1634     remuxing_example
1635     resampling_audio_example
1636     scaling_video_example
1637     transcode_aac_example
1638     transcoding_example
1639     vaapi_encode_example
1640     vaapi_transcode_example
1641 "
1642
1643 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1644     alsa
1645     appkit
1646     avfoundation
1647     bzlib
1648     coreimage
1649     iconv
1650     libxcb
1651     libxcb_shm
1652     libxcb_shape
1653     libxcb_xfixes
1654     lzma
1655     schannel
1656     sdl2
1657     securetransport
1658     sndio
1659     xlib
1660     zlib
1661 "
1662
1663 EXTERNAL_LIBRARY_GPL_LIST="
1664     avisynth
1665     frei0r
1666     libcdio
1667     libdavs2
1668     librubberband
1669     libvidstab
1670     libx264
1671     libx265
1672     libxavs
1673     libxavs2
1674     libxvid
1675 "
1676
1677 EXTERNAL_LIBRARY_NONFREE_LIST="
1678     decklink
1679     libndi_newtek
1680     libfdk_aac
1681     openssl
1682     libtls
1683 "
1684
1685 EXTERNAL_LIBRARY_VERSION3_LIST="
1686     gmp
1687     libaribb24
1688     liblensfun
1689     libopencore_amrnb
1690     libopencore_amrwb
1691     libvmaf
1692     libvo_amrwbenc
1693     mbedtls
1694     rkmpp
1695 "
1696
1697 EXTERNAL_LIBRARY_GPLV3_LIST="
1698     libsmbclient
1699 "
1700
1701 EXTERNAL_LIBRARY_LIST="
1702     $EXTERNAL_LIBRARY_GPL_LIST
1703     $EXTERNAL_LIBRARY_NONFREE_LIST
1704     $EXTERNAL_LIBRARY_VERSION3_LIST
1705     $EXTERNAL_LIBRARY_GPLV3_LIST
1706     chromaprint
1707     gcrypt
1708     gnutls
1709     jni
1710     ladspa
1711     libaom
1712     libass
1713     libbluray
1714     libbs2b
1715     libcaca
1716     libcelt
1717     libcodec2
1718     libdav1d
1719     libdc1394
1720     libdrm
1721     libflite
1722     libfontconfig
1723     libfreetype
1724     libfribidi
1725     libgme
1726     libgsm
1727     libiec61883
1728     libilbc
1729     libjack
1730     libklvanc
1731     libkvazaar
1732     libmodplug
1733     libmp3lame
1734     libmysofa
1735     libopencv
1736     libopenh264
1737     libopenjpeg
1738     libopenmpt
1739     libopus
1740     libpulse
1741     librsvg
1742     librtmp
1743     libshine
1744     libsmbclient
1745     libsnappy
1746     libsoxr
1747     libspeex
1748     libsrt
1749     libssh
1750     libtensorflow
1751     libtesseract
1752     libtheora
1753     libtwolame
1754     libv4l2
1755     libvorbis
1756     libvpx
1757     libwavpack
1758     libwebp
1759     libxml2
1760     libzimg
1761     libzmq
1762     libzvbi
1763     lv2
1764     mediacodec
1765     openal
1766     opengl
1767     vapoursynth
1768 "
1769
1770 HWACCEL_AUTODETECT_LIBRARY_LIST="
1771     amf
1772     audiotoolbox
1773     crystalhd
1774     cuda
1775     cuvid
1776     d3d11va
1777     dxva2
1778     ffnvcodec
1779     nvdec
1780     nvenc
1781     vaapi
1782     vdpau
1783     videotoolbox
1784     v4l2_m2m
1785     xvmc
1786 "
1787
1788 # catchall list of things that require external libs to link
1789 EXTRALIBS_LIST="
1790     cpu_init
1791     cws2fws
1792 "
1793
1794 HWACCEL_LIBRARY_NONFREE_LIST="
1795     cuda_sdk
1796     libnpp
1797 "
1798
1799 HWACCEL_LIBRARY_LIST="
1800     $HWACCEL_LIBRARY_NONFREE_LIST
1801     libmfx
1802     mmal
1803     omx
1804     opencl
1805 "
1806
1807 DOCUMENT_LIST="
1808     doc
1809     htmlpages
1810     manpages
1811     podpages
1812     txtpages
1813 "
1814
1815 FEATURE_LIST="
1816     ftrapv
1817     gray
1818     hardcoded_tables
1819     omx_rpi
1820     runtime_cpudetect
1821     safe_bitstream_reader
1822     shared
1823     small
1824     static
1825     swscale_alpha
1826 "
1827
1828 # this list should be kept in linking order
1829 LIBRARY_LIST="
1830     avdevice
1831     avfilter
1832     swscale
1833     postproc
1834     avformat
1835     avcodec
1836     swresample
1837     avresample
1838     avutil
1839 "
1840
1841 LICENSE_LIST="
1842     gpl
1843     nonfree
1844     version3
1845 "
1846
1847 PROGRAM_LIST="
1848     ffplay
1849     ffprobe
1850     ffmpeg
1851 "
1852
1853 SUBSYSTEM_LIST="
1854     dct
1855     dwt
1856     error_resilience
1857     faan
1858     fast_unaligned
1859     fft
1860     lsp
1861     lzo
1862     mdct
1863     pixelutils
1864     network
1865     rdft
1866 "
1867
1868 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1869 CONFIG_LIST="
1870     $DOCUMENT_LIST
1871     $EXAMPLE_LIST
1872     $EXTERNAL_LIBRARY_LIST
1873     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1874     $HWACCEL_LIBRARY_LIST
1875     $HWACCEL_AUTODETECT_LIBRARY_LIST
1876     $FEATURE_LIST
1877     $LICENSE_LIST
1878     $LIBRARY_LIST
1879     $PROGRAM_LIST
1880     $SUBSYSTEM_LIST
1881     autodetect
1882     fontconfig
1883     linux_perf
1884     memory_poisoning
1885     neon_clobber_test
1886     ossfuzz
1887     pic
1888     thumb
1889     valgrind_backtrace
1890     xmm_clobber_test
1891     $COMPONENT_LIST
1892 "
1893
1894 THREADS_LIST="
1895     pthreads
1896     os2threads
1897     w32threads
1898 "
1899
1900 ATOMICS_LIST="
1901     atomics_gcc
1902     atomics_suncc
1903     atomics_win32
1904 "
1905
1906 AUTODETECT_LIBS="
1907     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1908     $HWACCEL_AUTODETECT_LIBRARY_LIST
1909     $THREADS_LIST
1910 "
1911
1912 ARCH_LIST="
1913     aarch64
1914     alpha
1915     arm
1916     avr32
1917     avr32_ap
1918     avr32_uc
1919     bfin
1920     ia64
1921     m68k
1922     mips
1923     mips64
1924     parisc
1925     ppc
1926     ppc64
1927     s390
1928     sh4
1929     sparc
1930     sparc64
1931     tilegx
1932     tilepro
1933     tomi
1934     x86
1935     x86_32
1936     x86_64
1937 "
1938
1939 ARCH_EXT_LIST_ARM="
1940     armv5te
1941     armv6
1942     armv6t2
1943     armv8
1944     neon
1945     vfp
1946     vfpv3
1947     setend
1948 "
1949
1950 ARCH_EXT_LIST_MIPS="
1951     mipsfpu
1952     mips32r2
1953     mips32r5
1954     mips64r2
1955     mips32r6
1956     mips64r6
1957     mipsdsp
1958     mipsdspr2
1959     msa
1960 "
1961
1962 ARCH_EXT_LIST_LOONGSON="
1963     loongson2
1964     loongson3
1965     mmi
1966 "
1967
1968 ARCH_EXT_LIST_X86_SIMD="
1969     aesni
1970     amd3dnow
1971     amd3dnowext
1972     avx
1973     avx2
1974     avx512
1975     fma3
1976     fma4
1977     mmx
1978     mmxext
1979     sse
1980     sse2
1981     sse3
1982     sse4
1983     sse42
1984     ssse3
1985     xop
1986 "
1987
1988 ARCH_EXT_LIST_PPC="
1989     altivec
1990     dcbzl
1991     ldbrx
1992     power8
1993     ppc4xx
1994     vsx
1995 "
1996
1997 ARCH_EXT_LIST_X86="
1998     $ARCH_EXT_LIST_X86_SIMD
1999     cpunop
2000     i686
2001 "
2002
2003 ARCH_EXT_LIST="
2004     $ARCH_EXT_LIST_ARM
2005     $ARCH_EXT_LIST_PPC
2006     $ARCH_EXT_LIST_X86
2007     $ARCH_EXT_LIST_MIPS
2008     $ARCH_EXT_LIST_LOONGSON
2009 "
2010
2011 ARCH_FEATURES="
2012     aligned_stack
2013     fast_64bit
2014     fast_clz
2015     fast_cmov
2016     local_aligned
2017     simd_align_16
2018     simd_align_32
2019     simd_align_64
2020 "
2021
2022 BUILTIN_LIST="
2023     atomic_cas_ptr
2024     machine_rw_barrier
2025     MemoryBarrier
2026     mm_empty
2027     rdtsc
2028     sem_timedwait
2029     sync_val_compare_and_swap
2030 "
2031 HAVE_LIST_CMDLINE="
2032     inline_asm
2033     symver
2034     x86asm
2035 "
2036
2037 HAVE_LIST_PUB="
2038     bigendian
2039     fast_unaligned
2040 "
2041
2042 HEADERS_LIST="
2043     arpa_inet_h
2044     asm_types_h
2045     cdio_paranoia_h
2046     cdio_paranoia_paranoia_h
2047     cuda_h
2048     dispatch_dispatch_h
2049     dev_bktr_ioctl_bt848_h
2050     dev_bktr_ioctl_meteor_h
2051     dev_ic_bt8xx_h
2052     dev_video_bktr_ioctl_bt848_h
2053     dev_video_meteor_ioctl_meteor_h
2054     direct_h
2055     dirent_h
2056     dxgidebug_h
2057     dxva_h
2058     ES2_gl_h
2059     gsm_h
2060     io_h
2061     linux_perf_event_h
2062     machine_ioctl_bt848_h
2063     machine_ioctl_meteor_h
2064     malloc_h
2065     opencv2_core_core_c_h
2066     OpenGL_gl3_h
2067     poll_h
2068     sys_param_h
2069     sys_resource_h
2070     sys_select_h
2071     sys_soundcard_h
2072     sys_time_h
2073     sys_un_h
2074     sys_videoio_h
2075     termios_h
2076     udplite_h
2077     unistd_h
2078     valgrind_valgrind_h
2079     windows_h
2080     winsock2_h
2081 "
2082
2083 INTRINSICS_LIST="
2084     intrinsics_neon
2085 "
2086
2087 COMPLEX_FUNCS="
2088     cabs
2089     cexp
2090 "
2091
2092 MATH_FUNCS="
2093     atanf
2094     atan2f
2095     cbrt
2096     cbrtf
2097     copysign
2098     cosf
2099     erf
2100     exp2
2101     exp2f
2102     expf
2103     hypot
2104     isfinite
2105     isinf
2106     isnan
2107     ldexpf
2108     llrint
2109     llrintf
2110     log2
2111     log2f
2112     log10f
2113     lrint
2114     lrintf
2115     powf
2116     rint
2117     round
2118     roundf
2119     sinf
2120     trunc
2121     truncf
2122 "
2123
2124 SYSTEM_FEATURES="
2125     dos_paths
2126     libc_msvcrt
2127     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2128     section_data_rel_ro
2129     threads
2130     uwp
2131     winrt
2132 "
2133
2134 SYSTEM_FUNCS="
2135     access
2136     aligned_malloc
2137     arc4random
2138     clock_gettime
2139     closesocket
2140     CommandLineToArgvW
2141     fcntl
2142     getaddrinfo
2143     gethrtime
2144     getopt
2145     GetProcessAffinityMask
2146     GetProcessMemoryInfo
2147     GetProcessTimes
2148     getrusage
2149     GetSystemTimeAsFileTime
2150     gettimeofday
2151     glob
2152     glXGetProcAddress
2153     gmtime_r
2154     inet_aton
2155     isatty
2156     kbhit
2157     localtime_r
2158     lstat
2159     lzo1x_999_compress
2160     mach_absolute_time
2161     MapViewOfFile
2162     memalign
2163     mkstemp
2164     mmap
2165     mprotect
2166     nanosleep
2167     PeekNamedPipe
2168     posix_memalign
2169     pthread_cancel
2170     sched_getaffinity
2171     SecItemImport
2172     SetConsoleTextAttribute
2173     SetConsoleCtrlHandler
2174     setmode
2175     setrlimit
2176     Sleep
2177     strerror_r
2178     sysconf
2179     sysctl
2180     usleep
2181     UTGetOSTypeFromString
2182     VirtualAlloc
2183     wglGetProcAddress
2184 "
2185
2186 SYSTEM_LIBRARIES="
2187     bcrypt
2188     vaapi_drm
2189     vaapi_x11
2190     vdpau_x11
2191 "
2192
2193 TOOLCHAIN_FEATURES="
2194     as_arch_directive
2195     as_dn_directive
2196     as_fpu_directive
2197     as_func
2198     as_object_arch
2199     asm_mod_q
2200     blocks_extension
2201     ebp_available
2202     ebx_available
2203     gnu_as
2204     gnu_windres
2205     ibm_asm
2206     inline_asm_direct_symbol_refs
2207     inline_asm_labels
2208     inline_asm_nonlocal_labels
2209     pragma_deprecated
2210     rsync_contimeout
2211     symver_asm_label
2212     symver_gnu_asm
2213     vfp_args
2214     xform_asm
2215     xmm_clobbers
2216 "
2217
2218 TYPES_LIST="
2219     kCMVideoCodecType_HEVC
2220     socklen_t
2221     struct_addrinfo
2222     struct_group_source_req
2223     struct_ip_mreq_source
2224     struct_ipv6_mreq
2225     struct_msghdr_msg_flags
2226     struct_pollfd
2227     struct_rusage_ru_maxrss
2228     struct_sctp_event_subscribe
2229     struct_sockaddr_in6
2230     struct_sockaddr_sa_len
2231     struct_sockaddr_storage
2232     struct_stat_st_mtim_tv_nsec
2233     struct_v4l2_frmivalenum_discrete
2234 "
2235
2236 HAVE_LIST="
2237     $ARCH_EXT_LIST
2238     $(add_suffix _external $ARCH_EXT_LIST)
2239     $(add_suffix _inline   $ARCH_EXT_LIST)
2240     $ARCH_FEATURES
2241     $BUILTIN_LIST
2242     $COMPLEX_FUNCS
2243     $HAVE_LIST_CMDLINE
2244     $HAVE_LIST_PUB
2245     $HEADERS_LIST
2246     $INTRINSICS_LIST
2247     $MATH_FUNCS
2248     $SYSTEM_FEATURES
2249     $SYSTEM_FUNCS
2250     $SYSTEM_LIBRARIES
2251     $THREADS_LIST
2252     $TOOLCHAIN_FEATURES
2253     $TYPES_LIST
2254     makeinfo
2255     makeinfo_html
2256     opencl_d3d11
2257     opencl_drm_arm
2258     opencl_drm_beignet
2259     opencl_dxva2
2260     opencl_vaapi_beignet
2261     opencl_vaapi_intel_media
2262     perl
2263     pod2man
2264     texi2html
2265 "
2266
2267 # options emitted with CONFIG_ prefix but not available on the command line
2268 CONFIG_EXTRA="
2269     aandcttables
2270     ac3dsp
2271     adts_header
2272     audio_frame_queue
2273     audiodsp
2274     blockdsp
2275     bswapdsp
2276     cabac
2277     cbs
2278     cbs_av1
2279     cbs_h264
2280     cbs_h265
2281     cbs_jpeg
2282     cbs_mpeg2
2283     cbs_vp9
2284     dirac_parse
2285     dnn
2286     dvprofile
2287     exif
2288     faandct
2289     faanidct
2290     fdctdsp
2291     flacdsp
2292     fmtconvert
2293     frame_thread_encoder
2294     g722dsp
2295     golomb
2296     gplv3
2297     h263dsp
2298     h264chroma
2299     h264dsp
2300     h264parse
2301     h264pred
2302     h264qpel
2303     hevcparse
2304     hpeldsp
2305     huffman
2306     huffyuvdsp
2307     huffyuvencdsp
2308     idctdsp
2309     iirfilter
2310     mdct15
2311     intrax8
2312     iso_media
2313     ividsp
2314     jpegtables
2315     lgplv3
2316     libx262
2317     llauddsp
2318     llviddsp
2319     llvidencdsp
2320     lpc
2321     lzf
2322     me_cmp
2323     mpeg_er
2324     mpegaudio
2325     mpegaudiodsp
2326     mpegaudioheader
2327     mpegvideo
2328     mpegvideoenc
2329     mss34dsp
2330     pixblockdsp
2331     qpeldsp
2332     qsv
2333     qsvdec
2334     qsvenc
2335     qsvvpp
2336     rangecoder
2337     riffdec
2338     riffenc
2339     rtpdec
2340     rtpenc_chain
2341     rv34dsp
2342     scene_sad
2343     sinewin
2344     snappy
2345     srtp
2346     startcode
2347     texturedsp
2348     texturedspenc
2349     tpeldsp
2350     vaapi_1
2351     vaapi_encode
2352     vc1dsp
2353     videodsp
2354     vp3dsp
2355     vp56dsp
2356     vp8dsp
2357     wma_freqs
2358     wmv2dsp
2359 "
2360
2361 CMDLINE_SELECT="
2362     $ARCH_EXT_LIST
2363     $CONFIG_LIST
2364     $HAVE_LIST_CMDLINE
2365     $THREADS_LIST
2366     asm
2367     cross_compile
2368     debug
2369     extra_warnings
2370     logging
2371     lto
2372     optimizations
2373     rpath
2374     stripping
2375 "
2376
2377 PATHS_LIST="
2378     bindir
2379     datadir
2380     docdir
2381     incdir
2382     libdir
2383     mandir
2384     pkgconfigdir
2385     prefix
2386     shlibdir
2387     install_name_dir
2388 "
2389
2390 CMDLINE_SET="
2391     $PATHS_LIST
2392     ar
2393     arch
2394     as
2395     assert_level
2396     build_suffix
2397     cc
2398     objcc
2399     cpu
2400     cross_prefix
2401     custom_allocator
2402     cxx
2403     dep_cc
2404     doxygen
2405     env
2406     extra_version
2407     gas
2408     host_cc
2409     host_cflags
2410     host_extralibs
2411     host_ld
2412     host_ldflags
2413     host_os
2414     ignore_tests
2415     install
2416     ld
2417     ln_s
2418     logfile
2419     malloc_prefix
2420     nm
2421     optflags
2422     nvcc
2423     nvccflags
2424     pkg_config
2425     pkg_config_flags
2426     progs_suffix
2427     random_seed
2428     ranlib
2429     samples
2430     strip
2431     sws_max_filter_size
2432     sysinclude
2433     sysroot
2434     target_exec
2435     target_os
2436     target_path
2437     target_samples
2438     tempprefix
2439     toolchain
2440     valgrind
2441     windres
2442     x86asmexe
2443 "
2444
2445 CMDLINE_APPEND="
2446     extra_cflags
2447     extra_cxxflags
2448     extra_objcflags
2449     host_cppflags
2450 "
2451
2452 # code dependency declarations
2453
2454 # architecture extensions
2455
2456 armv5te_deps="arm"
2457 armv6_deps="arm"
2458 armv6t2_deps="arm"
2459 armv8_deps="aarch64"
2460 neon_deps_any="aarch64 arm"
2461 intrinsics_neon_deps="neon"
2462 vfp_deps_any="aarch64 arm"
2463 vfpv3_deps="vfp"
2464 setend_deps="arm"
2465
2466 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2467
2468 altivec_deps="ppc"
2469 dcbzl_deps="ppc"
2470 ldbrx_deps="ppc"
2471 ppc4xx_deps="ppc"
2472 vsx_deps="altivec"
2473 power8_deps="vsx"
2474
2475 loongson2_deps="mips"
2476 loongson3_deps="mips"
2477 mips32r2_deps="mips"
2478 mips32r5_deps="mips"
2479 mips32r6_deps="mips"
2480 mips64r2_deps="mips"
2481 mips64r6_deps="mips"
2482 mipsfpu_deps="mips"
2483 mipsdsp_deps="mips"
2484 mipsdspr2_deps="mips"
2485 mmi_deps="mips"
2486 msa_deps="mipsfpu"
2487
2488 cpunop_deps="i686"
2489 x86_64_select="i686"
2490 x86_64_suggest="fast_cmov"
2491
2492 amd3dnow_deps="mmx"
2493 amd3dnowext_deps="amd3dnow"
2494 i686_deps="x86"
2495 mmx_deps="x86"
2496 mmxext_deps="mmx"
2497 sse_deps="mmxext"
2498 sse2_deps="sse"
2499 sse3_deps="sse2"
2500 ssse3_deps="sse3"
2501 sse4_deps="ssse3"
2502 sse42_deps="sse4"
2503 aesni_deps="sse42"
2504 avx_deps="sse42"
2505 xop_deps="avx"
2506 fma3_deps="avx"
2507 fma4_deps="avx"
2508 avx2_deps="avx"
2509 avx512_deps="avx2"
2510
2511 mmx_external_deps="x86asm"
2512 mmx_inline_deps="inline_asm x86"
2513 mmx_suggest="mmx_external mmx_inline"
2514
2515 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2516     eval dep=\$${ext}_deps
2517     eval ${ext}_external_deps='"${dep}_external"'
2518     eval ${ext}_inline_deps='"${dep}_inline"'
2519     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2520 done
2521
2522 aligned_stack_if_any="aarch64 ppc x86"
2523 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2524 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2525 fast_unaligned_if_any="aarch64 ppc x86"
2526 simd_align_16_if_any="altivec neon sse"
2527 simd_align_32_if_any="avx"
2528 simd_align_64_if_any="avx512"
2529
2530 # system capabilities
2531 linux_perf_deps="linux_perf_event_h"
2532 symver_if_any="symver_asm_label symver_gnu_asm"
2533 valgrind_backtrace_conflict="optimizations"
2534 valgrind_backtrace_deps="valgrind_valgrind_h"
2535
2536 # threading support
2537 atomics_gcc_if="sync_val_compare_and_swap"
2538 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2539 atomics_win32_if="MemoryBarrier"
2540 atomics_native_if_any="$ATOMICS_LIST"
2541 w32threads_deps="atomics_native"
2542 threads_if_any="$THREADS_LIST"
2543
2544 # subsystems
2545 cbs_av1_select="cbs"
2546 cbs_h264_select="cbs golomb"
2547 cbs_h265_select="cbs golomb"
2548 cbs_jpeg_select="cbs"
2549 cbs_mpeg2_select="cbs"
2550 cbs_vp9_select="cbs"
2551 dct_select="rdft"
2552 dirac_parse_select="golomb"
2553 dnn_suggest="libtensorflow"
2554 error_resilience_select="me_cmp"
2555 faandct_deps="faan"
2556 faandct_select="fdctdsp"
2557 faanidct_deps="faan"
2558 faanidct_select="idctdsp"
2559 h264dsp_select="startcode"
2560 hevcparse_select="golomb"
2561 frame_thread_encoder_deps="encoders threads"
2562 intrax8_select="blockdsp idctdsp"
2563 mdct_select="fft"
2564 mdct15_select="fft"
2565 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2566 mpeg_er_select="error_resilience"
2567 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2568 mpegaudiodsp_select="dct"
2569 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2570 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2571 vc1dsp_select="h264chroma qpeldsp startcode"
2572 rdft_select="fft"
2573
2574 # decoders / encoders
2575 aac_decoder_select="adts_header mdct15 mdct sinewin"
2576 aac_fixed_decoder_select="adts_header mdct sinewin"
2577 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2578 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2579 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2580 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2581 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2582 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2583 adpcm_g722_decoder_select="g722dsp"
2584 adpcm_g722_encoder_select="g722dsp"
2585 aic_decoder_select="golomb idctdsp"
2586 alac_encoder_select="lpc"
2587 als_decoder_select="bswapdsp"
2588 amrnb_decoder_select="lsp"
2589 amrwb_decoder_select="lsp"
2590 amv_decoder_select="sp5x_decoder exif"
2591 amv_encoder_select="jpegtables mpegvideoenc"
2592 ape_decoder_select="bswapdsp llauddsp"
2593 apng_decoder_deps="zlib"
2594 apng_encoder_deps="zlib"
2595 apng_encoder_select="llvidencdsp"
2596 aptx_decoder_select="audio_frame_queue"
2597 aptx_encoder_select="audio_frame_queue"
2598 aptx_hd_decoder_select="audio_frame_queue"
2599 aptx_hd_encoder_select="audio_frame_queue"
2600 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2601 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2602 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2603 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2604 atrac1_decoder_select="mdct sinewin"
2605 atrac3_decoder_select="mdct"
2606 atrac3p_decoder_select="mdct sinewin"
2607 atrac9_decoder_select="mdct"
2608 avrn_decoder_select="exif jpegtables"
2609 bink_decoder_select="blockdsp hpeldsp"
2610 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2611 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2612 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2613 clearvideo_decoder_select="idctdsp"
2614 cllc_decoder_select="bswapdsp"
2615 comfortnoise_encoder_select="lpc"
2616 cook_decoder_select="audiodsp mdct sinewin"
2617 cscd_decoder_select="lzo"
2618 cscd_decoder_suggest="zlib"
2619 dca_decoder_select="mdct"
2620 dds_decoder_select="texturedsp"
2621 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2622 dnxhd_decoder_select="blockdsp idctdsp"
2623 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2624 dolby_e_decoder_select="mdct"
2625 dvvideo_decoder_select="dvprofile idctdsp"
2626 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2627 dxa_decoder_deps="zlib"
2628 dxv_decoder_select="lzf texturedsp"
2629 eac3_decoder_select="ac3_decoder"
2630 eac3_encoder_select="ac3_encoder"
2631 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2632 eatgq_decoder_select="aandcttables"
2633 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2634 exr_decoder_deps="zlib"
2635 ffv1_decoder_select="rangecoder"
2636 ffv1_encoder_select="rangecoder"
2637 ffvhuff_decoder_select="huffyuv_decoder"
2638 ffvhuff_encoder_select="huffyuv_encoder"
2639 fic_decoder_select="golomb"
2640 flac_decoder_select="flacdsp"
2641 flac_encoder_select="bswapdsp flacdsp lpc"
2642 flashsv2_decoder_deps="zlib"
2643 flashsv2_encoder_deps="zlib"
2644 flashsv_decoder_deps="zlib"
2645 flashsv_encoder_deps="zlib"
2646 flv_decoder_select="h263_decoder"
2647 flv_encoder_select="h263_encoder"
2648 fourxm_decoder_select="blockdsp bswapdsp"
2649 fraps_decoder_select="bswapdsp huffman"
2650 g2m_decoder_deps="zlib"
2651 g2m_decoder_select="blockdsp idctdsp jpegtables"
2652 g729_decoder_select="audiodsp"
2653 h261_decoder_select="mpegvideo"
2654 h261_encoder_select="mpegvideoenc"
2655 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2656 h263_encoder_select="h263dsp mpegvideoenc"
2657 h263i_decoder_select="h263_decoder"
2658 h263p_decoder_select="h263_decoder"
2659 h263p_encoder_select="h263_encoder"
2660 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2661 h264_decoder_suggest="error_resilience"
2662 hap_decoder_select="snappy texturedsp"
2663 hap_encoder_deps="libsnappy"
2664 hap_encoder_select="texturedspenc"
2665 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2666 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2667 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2668 hymt_decoder_select="huffyuv_decoder"
2669 iac_decoder_select="imc_decoder"
2670 imc_decoder_select="bswapdsp fft mdct sinewin"
2671 indeo3_decoder_select="hpeldsp"
2672 indeo4_decoder_select="ividsp"
2673 indeo5_decoder_select="ividsp"
2674 interplay_video_decoder_select="hpeldsp"
2675 jpegls_decoder_select="mjpeg_decoder"
2676 jv_decoder_select="blockdsp"
2677 lagarith_decoder_select="llviddsp"
2678 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2679 magicyuv_decoder_select="llviddsp"
2680 magicyuv_encoder_select="llvidencdsp"
2681 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2682 metasound_decoder_select="lsp mdct sinewin"
2683 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2684 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2685 mjpeg_encoder_select="jpegtables mpegvideoenc"
2686 mjpegb_decoder_select="mjpeg_decoder"
2687 mlp_decoder_select="mlp_parser"
2688 mlp_encoder_select="lpc"
2689 motionpixels_decoder_select="bswapdsp"
2690 mp1_decoder_select="mpegaudio"
2691 mp1float_decoder_select="mpegaudio"
2692 mp2_decoder_select="mpegaudio"
2693 mp2float_decoder_select="mpegaudio"
2694 mp3_decoder_select="mpegaudio"
2695 mp3adu_decoder_select="mpegaudio"
2696 mp3adufloat_decoder_select="mpegaudio"
2697 mp3float_decoder_select="mpegaudio"
2698 mp3on4_decoder_select="mpegaudio"
2699 mp3on4float_decoder_select="mpegaudio"
2700 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2701 mpc8_decoder_select="mpegaudiodsp"
2702 mpegvideo_decoder_select="mpegvideo"
2703 mpeg1video_decoder_select="mpegvideo"
2704 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2705 mpeg2video_decoder_select="mpegvideo"
2706 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2707 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2708 mpeg4_encoder_select="h263_encoder"
2709 msa1_decoder_select="mss34dsp"
2710 mscc_decoder_deps="zlib"
2711 msmpeg4v1_decoder_select="h263_decoder"
2712 msmpeg4v2_decoder_select="h263_decoder"
2713 msmpeg4v2_encoder_select="h263_encoder"
2714 msmpeg4v3_decoder_select="h263_decoder"
2715 msmpeg4v3_encoder_select="h263_encoder"
2716 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2717 mts2_decoder_select="mss34dsp"
2718 mwsc_decoder_deps="zlib"
2719 mxpeg_decoder_select="mjpeg_decoder"
2720 nellymoser_decoder_select="mdct sinewin"
2721 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2722 nuv_decoder_select="idctdsp lzo"
2723 on2avc_decoder_select="mdct"
2724 opus_decoder_deps="swresample"
2725 opus_decoder_select="mdct15"
2726 opus_encoder_select="audio_frame_queue mdct15"
2727 png_decoder_deps="zlib"
2728 png_encoder_deps="zlib"
2729 png_encoder_select="llvidencdsp"
2730 prores_decoder_select="blockdsp idctdsp"
2731 prores_encoder_select="fdctdsp"
2732 qcelp_decoder_select="lsp"
2733 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2734 ra_144_decoder_select="audiodsp"
2735 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2736 ralf_decoder_select="golomb"
2737 rasc_decoder_deps="zlib"
2738 rawvideo_decoder_select="bswapdsp"
2739 rscc_decoder_deps="zlib"
2740 rtjpeg_decoder_select="me_cmp"
2741 rv10_decoder_select="h263_decoder"
2742 rv10_encoder_select="h263_encoder"
2743 rv20_decoder_select="h263_decoder"
2744 rv20_encoder_select="h263_encoder"
2745 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2746 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2747 screenpresso_decoder_deps="zlib"
2748 shorten_decoder_select="bswapdsp"
2749 sipr_decoder_select="lsp"
2750 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2751 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2752 sonic_decoder_select="golomb rangecoder"
2753 sonic_encoder_select="golomb rangecoder"
2754 sonic_ls_encoder_select="golomb rangecoder"
2755 sp5x_decoder_select="mjpeg_decoder"
2756 speedhq_decoder_select="mpegvideo"
2757 srgc_decoder_deps="zlib"
2758 svq1_decoder_select="hpeldsp"
2759 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2760 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2761 svq3_decoder_suggest="zlib"
2762 tak_decoder_select="audiodsp"
2763 tdsc_decoder_deps="zlib"
2764 tdsc_decoder_select="mjpeg_decoder"
2765 theora_decoder_select="vp3_decoder"
2766 thp_decoder_select="mjpeg_decoder"
2767 tiff_decoder_suggest="zlib lzma"
2768 tiff_encoder_suggest="zlib"
2769 truehd_decoder_select="mlp_parser"
2770 truehd_encoder_select="lpc"
2771 truemotion2_decoder_select="bswapdsp"
2772 truespeech_decoder_select="bswapdsp"
2773 tscc_decoder_deps="zlib"
2774 twinvq_decoder_select="mdct lsp sinewin"
2775 txd_decoder_select="texturedsp"
2776 utvideo_decoder_select="bswapdsp llviddsp"
2777 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2778 vble_decoder_select="llviddsp"
2779 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2780 vc1image_decoder_select="vc1_decoder"
2781 vorbis_decoder_select="mdct"
2782 vorbis_encoder_select="audio_frame_queue mdct"
2783 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2784 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2785 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2786 vp6a_decoder_select="vp6_decoder"
2787 vp6f_decoder_select="vp6_decoder"
2788 vp7_decoder_select="h264pred videodsp vp8dsp"
2789 vp8_decoder_select="h264pred videodsp vp8dsp"
2790 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2791 wcmv_decoder_deps="zlib"
2792 webp_decoder_select="vp8_decoder exif"
2793 wmalossless_decoder_select="llauddsp"
2794 wmapro_decoder_select="mdct sinewin wma_freqs"
2795 wmav1_decoder_select="mdct sinewin wma_freqs"
2796 wmav1_encoder_select="mdct sinewin wma_freqs"
2797 wmav2_decoder_select="mdct sinewin wma_freqs"
2798 wmav2_encoder_select="mdct sinewin wma_freqs"
2799 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2800 wmv1_decoder_select="h263_decoder"
2801 wmv1_encoder_select="h263_encoder"
2802 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2803 wmv2_encoder_select="h263_encoder wmv2dsp"
2804 wmv3_decoder_select="vc1_decoder"
2805 wmv3image_decoder_select="wmv3_decoder"
2806 xma1_decoder_select="wmapro_decoder"
2807 xma2_decoder_select="wmapro_decoder"
2808 zerocodec_decoder_deps="zlib"
2809 zlib_decoder_deps="zlib"
2810 zlib_encoder_deps="zlib"
2811 zmbv_decoder_deps="zlib"
2812 zmbv_encoder_deps="zlib"
2813
2814 # hardware accelerators
2815 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2816 cuda_deps="ffnvcodec"
2817 cuvid_deps="ffnvcodec"
2818 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2819 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2820 ffnvcodec_deps_any="libdl LoadLibrary"
2821 nvdec_deps="ffnvcodec"
2822 vaapi_x11_deps="xlib"
2823 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2824 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2825 xvmc_deps="X11_extensions_XvMClib_h"
2826
2827 h263_vaapi_hwaccel_deps="vaapi"
2828 h263_vaapi_hwaccel_select="h263_decoder"
2829 h263_videotoolbox_hwaccel_deps="videotoolbox"
2830 h263_videotoolbox_hwaccel_select="h263_decoder"
2831 h264_d3d11va_hwaccel_deps="d3d11va"
2832 h264_d3d11va_hwaccel_select="h264_decoder"
2833 h264_d3d11va2_hwaccel_deps="d3d11va"
2834 h264_d3d11va2_hwaccel_select="h264_decoder"
2835 h264_dxva2_hwaccel_deps="dxva2"
2836 h264_dxva2_hwaccel_select="h264_decoder"
2837 h264_nvdec_hwaccel_deps="nvdec"
2838 h264_nvdec_hwaccel_select="h264_decoder"
2839 h264_vaapi_hwaccel_deps="vaapi"
2840 h264_vaapi_hwaccel_select="h264_decoder"
2841 h264_vdpau_hwaccel_deps="vdpau"
2842 h264_vdpau_hwaccel_select="h264_decoder"
2843 h264_videotoolbox_hwaccel_deps="videotoolbox"
2844 h264_videotoolbox_hwaccel_select="h264_decoder"
2845 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2846 hevc_d3d11va_hwaccel_select="hevc_decoder"
2847 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2848 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2849 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2850 hevc_dxva2_hwaccel_select="hevc_decoder"
2851 hevc_nvdec_hwaccel_deps="nvdec"
2852 hevc_nvdec_hwaccel_select="hevc_decoder"
2853 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2854 hevc_vaapi_hwaccel_select="hevc_decoder"
2855 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2856 hevc_vdpau_hwaccel_select="hevc_decoder"
2857 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2858 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2859 mjpeg_nvdec_hwaccel_deps="nvdec"
2860 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2861 mjpeg_vaapi_hwaccel_deps="vaapi"
2862 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2863 mpeg_xvmc_hwaccel_deps="xvmc"
2864 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2865 mpeg1_nvdec_hwaccel_deps="nvdec"
2866 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2867 mpeg1_vdpau_hwaccel_deps="vdpau"
2868 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2869 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2870 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2871 mpeg1_xvmc_hwaccel_deps="xvmc"
2872 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2873 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2874 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2876 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_dxva2_hwaccel_deps="dxva2"
2878 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2879 mpeg2_nvdec_hwaccel_deps="nvdec"
2880 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2881 mpeg2_vaapi_hwaccel_deps="vaapi"
2882 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2883 mpeg2_vdpau_hwaccel_deps="vdpau"
2884 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2885 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2886 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2887 mpeg2_xvmc_hwaccel_deps="xvmc"
2888 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2889 mpeg4_nvdec_hwaccel_deps="nvdec"
2890 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2891 mpeg4_vaapi_hwaccel_deps="vaapi"
2892 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2893 mpeg4_vdpau_hwaccel_deps="vdpau"
2894 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2895 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2896 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2897 vc1_d3d11va_hwaccel_deps="d3d11va"
2898 vc1_d3d11va_hwaccel_select="vc1_decoder"
2899 vc1_d3d11va2_hwaccel_deps="d3d11va"
2900 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2901 vc1_dxva2_hwaccel_deps="dxva2"
2902 vc1_dxva2_hwaccel_select="vc1_decoder"
2903 vc1_nvdec_hwaccel_deps="nvdec"
2904 vc1_nvdec_hwaccel_select="vc1_decoder"
2905 vc1_vaapi_hwaccel_deps="vaapi"
2906 vc1_vaapi_hwaccel_select="vc1_decoder"
2907 vc1_vdpau_hwaccel_deps="vdpau"
2908 vc1_vdpau_hwaccel_select="vc1_decoder"
2909 vp8_nvdec_hwaccel_deps="nvdec"
2910 vp8_nvdec_hwaccel_select="vp8_decoder"
2911 vp8_vaapi_hwaccel_deps="vaapi"
2912 vp8_vaapi_hwaccel_select="vp8_decoder"
2913 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2914 vp9_d3d11va_hwaccel_select="vp9_decoder"
2915 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2916 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2917 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2918 vp9_dxva2_hwaccel_select="vp9_decoder"
2919 vp9_nvdec_hwaccel_deps="nvdec"
2920 vp9_nvdec_hwaccel_select="vp9_decoder"
2921 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2922 vp9_vaapi_hwaccel_select="vp9_decoder"
2923 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2924 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2925 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2926 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2927 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2928 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2929
2930 # hardware-accelerated codecs
2931 omx_deps="libdl pthreads"
2932 omx_rpi_select="omx"
2933 qsv_deps="libmfx"
2934 qsvdec_select="qsv"
2935 qsvenc_select="qsv"
2936 qsvvpp_select="qsv"
2937 vaapi_encode_deps="vaapi"
2938 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2939
2940 hwupload_cuda_filter_deps="ffnvcodec"
2941 scale_npp_filter_deps="ffnvcodec libnpp"
2942 scale_cuda_filter_deps="cuda_sdk"
2943 thumbnail_cuda_filter_deps="cuda_sdk"
2944 transpose_npp_filter_deps="ffnvcodec libnpp"
2945
2946 amf_deps_any="libdl LoadLibrary"
2947 nvenc_deps="ffnvcodec"
2948 nvenc_deps_any="libdl LoadLibrary"
2949 nvenc_encoder_deps="nvenc"
2950
2951 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2952 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2953 h264_amf_encoder_deps="amf"
2954 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2955 h264_cuvid_decoder_deps="cuvid"
2956 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2957 h264_mediacodec_decoder_deps="mediacodec"
2958 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2959 h264_mmal_decoder_deps="mmal"
2960 h264_nvenc_encoder_deps="nvenc"
2961 h264_omx_encoder_deps="omx"
2962 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2963 h264_qsv_encoder_select="qsvenc"
2964 h264_rkmpp_decoder_deps="rkmpp"
2965 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2966 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2967 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2968 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2969 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2970 hevc_amf_encoder_deps="amf"
2971 hevc_cuvid_decoder_deps="cuvid"
2972 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2973 hevc_mediacodec_decoder_deps="mediacodec"
2974 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2975 hevc_nvenc_encoder_deps="nvenc"
2976 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2977 hevc_qsv_encoder_select="hevcparse qsvenc"
2978 hevc_rkmpp_decoder_deps="rkmpp"
2979 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2980 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2981 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2982 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2983 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2984 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2985 mjpeg_cuvid_decoder_deps="cuvid"
2986 mjpeg_qsv_encoder_deps="libmfx"
2987 mjpeg_qsv_encoder_select="qsvenc"
2988 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2989 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2990 mpeg1_cuvid_decoder_deps="cuvid"
2991 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2992 mpeg2_crystalhd_decoder_select="crystalhd"
2993 mpeg2_cuvid_decoder_deps="cuvid"
2994 mpeg2_mmal_decoder_deps="mmal"
2995 mpeg2_mediacodec_decoder_deps="mediacodec"
2996 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2997 mpeg2_qsv_encoder_select="qsvenc"
2998 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2999 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3000 mpeg4_crystalhd_decoder_select="crystalhd"
3001 mpeg4_cuvid_decoder_deps="cuvid"
3002 mpeg4_mediacodec_decoder_deps="mediacodec"
3003 mpeg4_mmal_decoder_deps="mmal"
3004 mpeg4_omx_encoder_deps="omx"
3005 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3006 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3007 msmpeg4_crystalhd_decoder_select="crystalhd"
3008 nvenc_h264_encoder_select="h264_nvenc_encoder"
3009 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3010 vc1_crystalhd_decoder_select="crystalhd"
3011 vc1_cuvid_decoder_deps="cuvid"
3012 vc1_mmal_decoder_deps="mmal"
3013 vc1_qsv_decoder_select="qsvdec vc1_parser"
3014 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3015 vp8_cuvid_decoder_deps="cuvid"
3016 vp8_mediacodec_decoder_deps="mediacodec"
3017 vp8_qsv_decoder_select="qsvdec vp8_parser"
3018 vp8_rkmpp_decoder_deps="rkmpp"
3019 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3020 vp8_vaapi_encoder_select="vaapi_encode"
3021 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3022 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3023 vp9_cuvid_decoder_deps="cuvid"
3024 vp9_mediacodec_decoder_deps="mediacodec"
3025 vp9_rkmpp_decoder_deps="rkmpp"
3026 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3027 vp9_vaapi_encoder_select="vaapi_encode"
3028 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3029 wmv3_crystalhd_decoder_select="crystalhd"
3030
3031 # parsers
3032 aac_parser_select="adts_header"
3033 av1_parser_select="cbs_av1"
3034 h264_parser_select="golomb h264dsp h264parse"
3035 hevc_parser_select="hevcparse"
3036 mpegaudio_parser_select="mpegaudioheader"
3037 mpegvideo_parser_select="mpegvideo"
3038 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3039 vc1_parser_select="vc1dsp"
3040
3041 # bitstream_filters
3042 aac_adtstoasc_bsf_select="adts_header"
3043 av1_metadata_bsf_select="cbs_av1"
3044 eac3_core_bsf_select="ac3_parser"
3045 filter_units_bsf_select="cbs"
3046 h264_metadata_bsf_deps="const_nan"
3047 h264_metadata_bsf_select="cbs_h264"
3048 h264_redundant_pps_bsf_select="cbs_h264"
3049 hevc_metadata_bsf_select="cbs_h265"
3050 mjpeg2jpeg_bsf_select="jpegtables"
3051 mpeg2_metadata_bsf_select="cbs_mpeg2"
3052 trace_headers_bsf_select="cbs"
3053 truehd_core_bsf_select="mlp_parser"
3054 vp9_metadata_bsf_select="cbs_vp9"
3055
3056 # external libraries
3057 aac_at_decoder_deps="audiotoolbox"
3058 aac_at_decoder_select="aac_adtstoasc_bsf"
3059 ac3_at_decoder_deps="audiotoolbox"
3060 ac3_at_decoder_select="ac3_parser"
3061 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3062 alac_at_decoder_deps="audiotoolbox"
3063 amr_nb_at_decoder_deps="audiotoolbox"
3064 avisynth_deps_any="libdl LoadLibrary"
3065 avisynth_demuxer_deps="avisynth"
3066 avisynth_demuxer_select="riffdec"
3067 eac3_at_decoder_deps="audiotoolbox"
3068 eac3_at_decoder_select="ac3_parser"
3069 gsm_ms_at_decoder_deps="audiotoolbox"
3070 ilbc_at_decoder_deps="audiotoolbox"
3071 mp1_at_decoder_deps="audiotoolbox"
3072 mp2_at_decoder_deps="audiotoolbox"
3073 mp3_at_decoder_deps="audiotoolbox"
3074 mp1_at_decoder_select="mpegaudioheader"
3075 mp2_at_decoder_select="mpegaudioheader"
3076 mp3_at_decoder_select="mpegaudioheader"
3077 pcm_alaw_at_decoder_deps="audiotoolbox"
3078 pcm_mulaw_at_decoder_deps="audiotoolbox"
3079 qdmc_at_decoder_deps="audiotoolbox"
3080 qdm2_at_decoder_deps="audiotoolbox"
3081 aac_at_encoder_deps="audiotoolbox"
3082 aac_at_encoder_select="audio_frame_queue"
3083 alac_at_encoder_deps="audiotoolbox"
3084 alac_at_encoder_select="audio_frame_queue"
3085 ilbc_at_encoder_deps="audiotoolbox"
3086 ilbc_at_encoder_select="audio_frame_queue"
3087 pcm_alaw_at_encoder_deps="audiotoolbox"
3088 pcm_alaw_at_encoder_select="audio_frame_queue"
3089 pcm_mulaw_at_encoder_deps="audiotoolbox"
3090 pcm_mulaw_at_encoder_select="audio_frame_queue"
3091 chromaprint_muxer_deps="chromaprint"
3092 h264_videotoolbox_encoder_deps="pthreads"
3093 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3094 hevc_videotoolbox_encoder_deps="pthreads"
3095 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3096 libaom_av1_decoder_deps="libaom"
3097 libaom_av1_encoder_deps="libaom"
3098 libaom_av1_encoder_select="extract_extradata_bsf"
3099 libaribb24_decoder_deps="libaribb24"
3100 libcelt_decoder_deps="libcelt"
3101 libcodec2_decoder_deps="libcodec2"
3102 libcodec2_encoder_deps="libcodec2"
3103 libdav1d_decoder_deps="libdav1d"
3104 libdavs2_decoder_deps="libdavs2"
3105 libfdk_aac_decoder_deps="libfdk_aac"
3106 libfdk_aac_encoder_deps="libfdk_aac"
3107 libfdk_aac_encoder_select="audio_frame_queue"
3108 libgme_demuxer_deps="libgme"
3109 libgsm_decoder_deps="libgsm"
3110 libgsm_encoder_deps="libgsm"
3111 libgsm_ms_decoder_deps="libgsm"
3112 libgsm_ms_encoder_deps="libgsm"
3113 libilbc_decoder_deps="libilbc"
3114 libilbc_encoder_deps="libilbc"
3115 libkvazaar_encoder_deps="libkvazaar"
3116 libmodplug_demuxer_deps="libmodplug"
3117 libmp3lame_encoder_deps="libmp3lame"
3118 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3119 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3120 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3121 libopencore_amrnb_encoder_select="audio_frame_queue"
3122 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3123 libopenh264_decoder_deps="libopenh264"
3124 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3125 libopenh264_encoder_deps="libopenh264"
3126 libopenjpeg_decoder_deps="libopenjpeg"
3127 libopenjpeg_encoder_deps="libopenjpeg"
3128 libopenmpt_demuxer_deps="libopenmpt"
3129 libopus_decoder_deps="libopus"
3130 libopus_encoder_deps="libopus"
3131 libopus_encoder_select="audio_frame_queue"
3132 librsvg_decoder_deps="librsvg"
3133 libshine_encoder_deps="libshine"
3134 libshine_encoder_select="audio_frame_queue"
3135 libspeex_decoder_deps="libspeex"
3136 libspeex_encoder_deps="libspeex"
3137 libspeex_encoder_select="audio_frame_queue"
3138 libtheora_encoder_deps="libtheora"
3139 libtwolame_encoder_deps="libtwolame"
3140 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3141 libvorbis_decoder_deps="libvorbis"
3142 libvorbis_encoder_deps="libvorbis libvorbisenc"
3143 libvorbis_encoder_select="audio_frame_queue"
3144 libvpx_vp8_decoder_deps="libvpx"
3145 libvpx_vp8_encoder_deps="libvpx"
3146 libvpx_vp9_decoder_deps="libvpx"
3147 libvpx_vp9_encoder_deps="libvpx"
3148 libwavpack_encoder_deps="libwavpack"
3149 libwavpack_encoder_select="audio_frame_queue"
3150 libwebp_encoder_deps="libwebp"
3151 libwebp_anim_encoder_deps="libwebp"
3152 libx262_encoder_deps="libx262"
3153 libx264_encoder_deps="libx264"
3154 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3155 libx264rgb_encoder_select="libx264_encoder"
3156 libx265_encoder_deps="libx265"
3157 libxavs_encoder_deps="libxavs"
3158 libxavs2_encoder_deps="libxavs2"
3159 libxvid_encoder_deps="libxvid"
3160 libzvbi_teletext_decoder_deps="libzvbi"
3161 vapoursynth_demuxer_deps="vapoursynth"
3162 videotoolbox_suggest="coreservices"
3163 videotoolbox_deps="corefoundation coremedia corevideo"
3164 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3165
3166 # demuxers / muxers
3167 ac3_demuxer_select="ac3_parser"
3168 aiff_muxer_select="iso_media"
3169 asf_demuxer_select="riffdec"
3170 asf_o_demuxer_select="riffdec"
3171 asf_muxer_select="riffenc"
3172 asf_stream_muxer_select="asf_muxer"
3173 avi_demuxer_select="iso_media riffdec exif"
3174 avi_muxer_select="riffenc"
3175 caf_demuxer_select="iso_media riffdec"
3176 caf_muxer_select="iso_media"
3177 dash_muxer_select="mp4_muxer"
3178 dash_demuxer_deps="libxml2"
3179 dirac_demuxer_select="dirac_parser"
3180 dts_demuxer_select="dca_parser"
3181 dtshd_demuxer_select="dca_parser"
3182 dv_demuxer_select="dvprofile"
3183 dv_muxer_select="dvprofile"
3184 dxa_demuxer_select="riffdec"
3185 eac3_demuxer_select="ac3_parser"
3186 f4v_muxer_select="mov_muxer"
3187 fifo_muxer_deps="threads"
3188 flac_demuxer_select="flac_parser"
3189 hds_muxer_select="flv_muxer"
3190 hls_muxer_select="mpegts_muxer"
3191 hls_muxer_suggest="gcrypt openssl"
3192 image2_alias_pix_demuxer_select="image2_demuxer"
3193 image2_brender_pix_demuxer_select="image2_demuxer"
3194 ipod_muxer_select="mov_muxer"
3195 ismv_muxer_select="mov_muxer"
3196 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3197 matroska_audio_muxer_select="matroska_muxer"
3198 matroska_demuxer_select="iso_media riffdec"
3199 matroska_demuxer_suggest="bzlib lzo zlib"
3200 matroska_muxer_select="iso_media riffenc"
3201 mmf_muxer_select="riffenc"
3202 mov_demuxer_select="iso_media riffdec"
3203 mov_demuxer_suggest="zlib"
3204 mov_muxer_select="iso_media riffenc rtpenc_chain"
3205 mp3_demuxer_select="mpegaudio_parser"
3206 mp3_muxer_select="mpegaudioheader"
3207 mp4_muxer_select="mov_muxer"
3208 mpegts_demuxer_select="iso_media"
3209 mpegts_muxer_select="adts_muxer latm_muxer"
3210 mpegtsraw_demuxer_select="mpegts_demuxer"
3211 mxf_d10_muxer_select="mxf_muxer"
3212 mxf_opatom_muxer_select="mxf_muxer"
3213 nut_muxer_select="riffenc"
3214 nuv_demuxer_select="riffdec"
3215 oga_muxer_select="ogg_muxer"
3216 ogg_demuxer_select="dirac_parse"
3217 ogv_muxer_select="ogg_muxer"
3218 opus_muxer_select="ogg_muxer"
3219 psp_muxer_select="mov_muxer"
3220 rtp_demuxer_select="sdp_demuxer"
3221 rtp_muxer_select="golomb"
3222 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3223 rtsp_demuxer_select="http_protocol rtpdec"
3224 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3225 sap_demuxer_select="sdp_demuxer"
3226 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3227 sdp_demuxer_select="rtpdec"
3228 smoothstreaming_muxer_select="ismv_muxer"
3229 spdif_demuxer_select="adts_header"
3230 spdif_muxer_select="adts_header"
3231 spx_muxer_select="ogg_muxer"
3232 swf_demuxer_suggest="zlib"
3233 tak_demuxer_select="tak_parser"
3234 tg2_muxer_select="mov_muxer"
3235 tgp_muxer_select="mov_muxer"
3236 vobsub_demuxer_select="mpegps_demuxer"
3237 w64_demuxer_select="wav_demuxer"
3238 w64_muxer_select="wav_muxer"
3239 wav_demuxer_select="riffdec"
3240 wav_muxer_select="riffenc"
3241 webm_muxer_select="iso_media riffenc"
3242 webm_dash_manifest_demuxer_select="matroska_demuxer"
3243 wtv_demuxer_select="mpegts_demuxer riffdec"
3244 wtv_muxer_select="mpegts_muxer riffenc"
3245 xmv_demuxer_select="riffdec"
3246 xwma_demuxer_select="riffdec"
3247
3248 # indevs / outdevs
3249 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3250 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3251 alsa_indev_deps="alsa"
3252 alsa_outdev_deps="alsa"
3253 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3254 avfoundation_indev_suggest="coregraphics applicationservices"
3255 avfoundation_indev_extralibs="-framework Foundation"
3256 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3257 caca_outdev_deps="libcaca"
3258 decklink_deps_any="libdl LoadLibrary"
3259 decklink_indev_deps="decklink threads"
3260 decklink_indev_extralibs="-lstdc++"
3261 decklink_outdev_deps="decklink threads"
3262 decklink_outdev_suggest="libklvanc"
3263 decklink_outdev_extralibs="-lstdc++"
3264 libndi_newtek_indev_deps="libndi_newtek"
3265 libndi_newtek_indev_extralibs="-lndi"
3266 libndi_newtek_outdev_deps="libndi_newtek"
3267 libndi_newtek_outdev_extralibs="-lndi"
3268 dshow_indev_deps="IBaseFilter"
3269 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3270 fbdev_indev_deps="linux_fb_h"
3271 fbdev_outdev_deps="linux_fb_h"
3272 gdigrab_indev_deps="CreateDIBSection"
3273 gdigrab_indev_extralibs="-lgdi32"
3274 gdigrab_indev_select="bmp_decoder"
3275 iec61883_indev_deps="libiec61883"
3276 jack_indev_deps="libjack"
3277 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3278 kmsgrab_indev_deps="libdrm"
3279 lavfi_indev_deps="avfilter"
3280 libcdio_indev_deps="libcdio"
3281 libdc1394_indev_deps="libdc1394"
3282 openal_indev_deps="openal"
3283 opengl_outdev_deps="opengl"
3284 opengl_outdev_suggest="sdl2"
3285 oss_indev_deps_any="sys_soundcard_h"
3286 oss_outdev_deps_any="sys_soundcard_h"
3287 pulse_indev_deps="libpulse"
3288 pulse_outdev_deps="libpulse"
3289 sdl2_outdev_deps="sdl2"
3290 sndio_indev_deps="sndio"
3291 sndio_outdev_deps="sndio"
3292 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3293 v4l2_indev_suggest="libv4l2"
3294 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3295 v4l2_outdev_suggest="libv4l2"
3296 vfwcap_indev_deps="vfw32 vfwcap_defines"
3297 xcbgrab_indev_deps="libxcb"
3298 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3299 xv_outdev_deps="xlib"
3300
3301 # protocols
3302 async_protocol_deps="threads"
3303 bluray_protocol_deps="libbluray"
3304 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3305 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3306 ffrtmpcrypt_protocol_select="tcp_protocol"
3307 ffrtmphttp_protocol_conflict="librtmp_protocol"
3308 ffrtmphttp_protocol_select="http_protocol"
3309 ftp_protocol_select="tcp_protocol"
3310 gopher_protocol_select="network"
3311 http_protocol_select="tcp_protocol"
3312 http_protocol_suggest="zlib"
3313 httpproxy_protocol_select="tcp_protocol"
3314 httpproxy_protocol_suggest="zlib"
3315 https_protocol_select="tls_protocol"
3316 https_protocol_suggest="zlib"
3317 icecast_protocol_select="http_protocol"
3318 mmsh_protocol_select="http_protocol"
3319 mmst_protocol_select="network"
3320 rtmp_protocol_conflict="librtmp_protocol"
3321 rtmp_protocol_select="tcp_protocol"
3322 rtmp_protocol_suggest="zlib"
3323 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3324 rtmpe_protocol_suggest="zlib"
3325 rtmps_protocol_conflict="librtmp_protocol"
3326 rtmps_protocol_select="tls_protocol"
3327 rtmps_protocol_suggest="zlib"
3328 rtmpt_protocol_select="ffrtmphttp_protocol"
3329 rtmpt_protocol_suggest="zlib"
3330 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3331 rtmpte_protocol_suggest="zlib"
3332 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3333 rtmpts_protocol_suggest="zlib"
3334 rtp_protocol_select="udp_protocol"
3335 schannel_conflict="openssl gnutls libtls mbedtls"
3336 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3337 sctp_protocol_select="network"
3338 securetransport_conflict="openssl gnutls libtls mbedtls"
3339 srtp_protocol_select="rtp_protocol srtp"
3340 tcp_protocol_select="network"
3341 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3342 tls_protocol_select="tcp_protocol"
3343 udp_protocol_select="network"
3344 udplite_protocol_select="network"
3345 unix_protocol_deps="sys_un_h"
3346 unix_protocol_select="network"
3347
3348 # external library protocols
3349 librtmp_protocol_deps="librtmp"
3350 librtmpe_protocol_deps="librtmp"
3351 librtmps_protocol_deps="librtmp"
3352 librtmpt_protocol_deps="librtmp"
3353 librtmpte_protocol_deps="librtmp"
3354 libsmbclient_protocol_deps="libsmbclient gplv3"
3355 libsrt_protocol_deps="libsrt"
3356 libsrt_protocol_select="network"
3357 libssh_protocol_deps="libssh"
3358 libtls_conflict="openssl gnutls mbedtls"
3359
3360 # filters
3361 afftdn_filter_deps="avcodec"
3362 afftdn_filter_select="fft"
3363 afftfilt_filter_deps="avcodec"
3364 afftfilt_filter_select="fft"
3365 afir_filter_deps="avcodec"
3366 afir_filter_select="fft"
3367 amovie_filter_deps="avcodec avformat"
3368 aresample_filter_deps="swresample"
3369 ass_filter_deps="libass"
3370 atempo_filter_deps="avcodec"
3371 atempo_filter_select="rdft"
3372 avgblur_opencl_filter_deps="opencl"
3373 azmq_filter_deps="libzmq"
3374 blackframe_filter_deps="gpl"
3375 bm3d_filter_deps="avcodec"
3376 bm3d_filter_select="dct"
3377 boxblur_filter_deps="gpl"
3378 boxblur_opencl_filter_deps="opencl gpl"
3379 bs2b_filter_deps="libbs2b"
3380 colormatrix_filter_deps="gpl"
3381 convolution_opencl_filter_deps="opencl"
3382 convolve_filter_deps="avcodec"
3383 convolve_filter_select="fft"
3384 coreimage_filter_deps="coreimage appkit"
3385 coreimage_filter_extralibs="-framework OpenGL"
3386 coreimagesrc_filter_deps="coreimage appkit"
3387 coreimagesrc_filter_extralibs="-framework OpenGL"
3388 cover_rect_filter_deps="avcodec avformat gpl"
3389 cropdetect_filter_deps="gpl"
3390 deconvolve_filter_deps="avcodec"
3391 deconvolve_filter_select="fft"
3392 deinterlace_qsv_filter_deps="libmfx"
3393 deinterlace_vaapi_filter_deps="vaapi"
3394 delogo_filter_deps="gpl"
3395 denoise_vaapi_filter_deps="vaapi"
3396 deshake_filter_select="pixelutils"
3397 dilation_opencl_filter_deps="opencl"
3398 drawtext_filter_deps="libfreetype"
3399 drawtext_filter_suggest="libfontconfig libfribidi"
3400 elbg_filter_deps="avcodec"
3401 eq_filter_deps="gpl"
3402 erosion_opencl_filter_deps="opencl"
3403 fftfilt_filter_deps="avcodec"
3404 fftfilt_filter_select="rdft"
3405 fftdnoiz_filter_deps="avcodec"
3406 fftdnoiz_filter_select="fft"
3407 find_rect_filter_deps="avcodec avformat gpl"
3408 firequalizer_filter_deps="avcodec"
3409 firequalizer_filter_select="rdft"
3410 flite_filter_deps="libflite"
3411 framerate_filter_select="scene_sad"
3412 freezedetect_filter_select="scene_sad"
3413 frei0r_filter_deps="frei0r libdl"
3414 frei0r_src_filter_deps="frei0r libdl"
3415 fspp_filter_deps="gpl"
3416 geq_filter_deps="gpl"
3417 histeq_filter_deps="gpl"
3418 hqdn3d_filter_deps="gpl"
3419 interlace_filter_deps="gpl"
3420 kerndeint_filter_deps="gpl"
3421 ladspa_filter_deps="ladspa libdl"
3422 lensfun_filter_deps="liblensfun version3"
3423 lv2_filter_deps="lv2"
3424 mcdeint_filter_deps="avcodec gpl"
3425 movie_filter_deps="avcodec avformat"
3426 mpdecimate_filter_deps="gpl"
3427 mpdecimate_filter_select="pixelutils"
3428 minterpolate_filter_select="scene_sad"
3429 mptestsrc_filter_deps="gpl"
3430 negate_filter_deps="lut_filter"
3431 nnedi_filter_deps="gpl"
3432 ocr_filter_deps="libtesseract"
3433 ocv_filter_deps="libopencv"
3434 openclsrc_filter_deps="opencl"
3435 overlay_opencl_filter_deps="opencl"
3436 overlay_qsv_filter_deps="libmfx"
3437 overlay_qsv_filter_select="qsvvpp"
3438 owdenoise_filter_deps="gpl"
3439 pan_filter_deps="swresample"
3440 perspective_filter_deps="gpl"
3441 phase_filter_deps="gpl"
3442 pp7_filter_deps="gpl"
3443 pp_filter_deps="gpl postproc"
3444 prewitt_opencl_filter_deps="opencl"
3445 procamp_vaapi_filter_deps="vaapi"
3446 program_opencl_filter_deps="opencl"
3447 pullup_filter_deps="gpl"
3448 removelogo_filter_deps="avcodec avformat swscale"
3449 repeatfields_filter_deps="gpl"
3450 resample_filter_deps="avresample"
3451 roberts_opencl_filter_deps="opencl"
3452 rubberband_filter_deps="librubberband"
3453 sab_filter_deps="gpl swscale"
3454 scale2ref_filter_deps="swscale"
3455 scale_filter_deps="swscale"
3456 scale_qsv_filter_deps="libmfx"
3457 select_filter_select="scene_sad"
3458 sharpness_vaapi_filter_deps="vaapi"
3459 showcqt_filter_deps="avcodec avformat swscale"
3460 showcqt_filter_suggest="libfontconfig libfreetype"
3461 showcqt_filter_select="fft"
3462 showfreqs_filter_deps="avcodec"
3463 showfreqs_filter_select="fft"
3464 showspectrum_filter_deps="avcodec"
3465 showspectrum_filter_select="fft"
3466 showspectrumpic_filter_deps="avcodec"
3467 showspectrumpic_filter_select="fft"
3468 signature_filter_deps="gpl avcodec avformat"
3469 smartblur_filter_deps="gpl swscale"
3470 sobel_opencl_filter_deps="opencl"
3471 sofalizer_filter_deps="libmysofa avcodec"
3472 sofalizer_filter_select="fft"
3473 spectrumsynth_filter_deps="avcodec"
3474 spectrumsynth_filter_select="fft"
3475 spp_filter_deps="gpl avcodec"
3476 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3477 sr_filter_deps="avformat swscale"
3478 sr_filter_select="dnn"
3479 stereo3d_filter_deps="gpl"
3480 subtitles_filter_deps="avformat avcodec libass"
3481 super2xsai_filter_deps="gpl"
3482 pixfmts_super2xsai_test_deps="super2xsai_filter"
3483 tinterlace_filter_deps="gpl"
3484 tinterlace_merge_test_deps="tinterlace_filter"
3485 tinterlace_pad_test_deps="tinterlace_filter"
3486 tonemap_filter_deps="const_nan"
3487 tonemap_opencl_filter_deps="opencl const_nan"
3488 transpose_opencl_filter_deps="opencl"
3489 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3490 unsharp_opencl_filter_deps="opencl"
3491 uspp_filter_deps="gpl avcodec"
3492 vaguedenoiser_filter_deps="gpl"
3493 vidstabdetect_filter_deps="libvidstab"
3494 vidstabtransform_filter_deps="libvidstab"
3495 libvmaf_filter_deps="libvmaf pthreads"
3496 zmq_filter_deps="libzmq"
3497 zoompan_filter_deps="swscale"
3498 zscale_filter_deps="libzimg const_nan"
3499 scale_vaapi_filter_deps="vaapi"
3500 vpp_qsv_filter_deps="libmfx"
3501 vpp_qsv_filter_select="qsvvpp"
3502 yadif_cuda_filter_deps="cuda_sdk"
3503
3504 # examples
3505 avio_dir_cmd_deps="avformat avutil"
3506 avio_reading_deps="avformat avcodec avutil"
3507 decode_audio_example_deps="avcodec avutil"
3508 decode_video_example_deps="avcodec avutil"
3509 demuxing_decoding_example_deps="avcodec avformat avutil"
3510 encode_audio_example_deps="avcodec avutil"
3511 encode_video_example_deps="avcodec avutil"
3512 extract_mvs_example_deps="avcodec avformat avutil"
3513 filter_audio_example_deps="avfilter avutil"
3514 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3515 filtering_video_example_deps="avfilter avcodec avformat avutil"
3516 http_multiclient_example_deps="avformat avutil fork"
3517 hw_decode_example_deps="avcodec avformat avutil"
3518 metadata_example_deps="avformat avutil"
3519 muxing_example_deps="avcodec avformat avutil swscale"
3520 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3521 remuxing_example_deps="avcodec avformat avutil"
3522 resampling_audio_example_deps="avutil swresample"
3523 scaling_video_example_deps="avutil swscale"
3524 transcode_aac_example_deps="avcodec avformat swresample"
3525 transcoding_example_deps="avfilter avcodec avformat avutil"
3526 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3527 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3528
3529 # EXTRALIBS_LIST
3530 cpu_init_extralibs="pthreads_extralibs"
3531 cws2fws_extralibs="zlib_extralibs"
3532
3533 # libraries, in any order
3534 avcodec_deps="avutil"
3535 avcodec_suggest="libm"
3536 avcodec_select="null_bsf"
3537 avdevice_deps="avformat avcodec avutil"
3538 avdevice_suggest="libm"
3539 avfilter_deps="avutil"
3540 avfilter_suggest="libm"
3541 avformat_deps="avcodec avutil"
3542 avformat_suggest="libm network zlib"
3543 avresample_deps="avutil"
3544 avresample_suggest="libm"
3545 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3546 postproc_deps="avutil gpl"
3547 postproc_suggest="libm"
3548 swresample_deps="avutil"
3549 swresample_suggest="libm libsoxr"
3550 swscale_deps="avutil"
3551 swscale_suggest="libm"
3552
3553 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3554 avfilter_extralibs="pthreads_extralibs"
3555 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3556
3557 # programs
3558 ffmpeg_deps="avcodec avfilter avformat"
3559 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3560                null_filter
3561                trim_filter"
3562 ffmpeg_suggest="ole32 psapi shell32"
3563 ffplay_deps="avcodec avformat swscale swresample sdl2"
3564 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3565 ffplay_suggest="shell32"
3566 ffprobe_deps="avcodec avformat"
3567 ffprobe_suggest="shell32"
3568
3569 # documentation
3570 podpages_deps="perl"
3571 manpages_deps="perl pod2man"
3572 htmlpages_deps="perl"
3573 htmlpages_deps_any="makeinfo_html texi2html"
3574 txtpages_deps="perl makeinfo"
3575 doc_deps_any="manpages htmlpages podpages txtpages"
3576
3577 # default parameters
3578
3579 logfile="ffbuild/config.log"
3580
3581 # installation paths
3582 prefix_default="/usr/local"
3583 bindir_default='${prefix}/bin'
3584 datadir_default='${prefix}/share/ffmpeg'
3585 docdir_default='${prefix}/share/doc/ffmpeg'
3586 incdir_default='${prefix}/include'
3587 libdir_default='${prefix}/lib'
3588 mandir_default='${prefix}/share/man'
3589
3590 # toolchain
3591 ar_default="ar"
3592 cc_default="gcc"
3593 cxx_default="g++"
3594 host_cc_default="gcc"
3595 doxygen_default="doxygen"
3596 install="install"
3597 ln_s_default="ln -s -f"
3598 nm_default="nm -g"
3599 pkg_config_default=pkg-config
3600 ranlib_default="ranlib"
3601 strip_default="strip"
3602 version_script='--version-script'
3603 objformat="elf32"
3604 x86asmexe_default="nasm"
3605 windres_default="windres"
3606 nvcc_default="nvcc"
3607 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3608 striptype="direct"
3609
3610 # OS
3611 target_os_default=$(tolower $(uname -s))
3612 host_os=$target_os_default
3613
3614 # machine
3615 if test "$target_os_default" = aix; then
3616     arch_default=$(uname -p)
3617     strip_default="strip -X32_64"
3618     nm_default="nm -g -X32_64"
3619 else
3620     arch_default=$(uname -m)
3621 fi
3622 cpu="generic"
3623 intrinsics="none"
3624
3625 # configurable options
3626 enable $PROGRAM_LIST
3627 enable $DOCUMENT_LIST
3628 enable $EXAMPLE_LIST
3629 enable $(filter_out avresample $LIBRARY_LIST)
3630 enable stripping
3631
3632 enable asm
3633 enable debug
3634 enable doc
3635 enable faan faandct faanidct
3636 enable optimizations
3637 enable runtime_cpudetect
3638 enable safe_bitstream_reader
3639 enable static
3640 enable swscale_alpha
3641 enable valgrind_backtrace
3642
3643 sws_max_filter_size_default=256
3644 set_default sws_max_filter_size
3645
3646 # internal components are enabled by default
3647 enable $EXTRALIBS_LIST
3648
3649 # Avoid external, non-system, libraries getting enabled by dependency resolution
3650 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3651
3652 # build settings
3653 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3654 LIBPREF="lib"
3655 LIBSUF=".a"
3656 FULLNAME='$(NAME)$(BUILDSUF)'
3657 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3658 SLIBPREF="lib"
3659 SLIBSUF=".so"
3660 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3661 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3662 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3663 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3664 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3665 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3666 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3667
3668 asflags_filter=echo
3669 cflags_filter=echo
3670 ldflags_filter=echo
3671
3672 AS_C='-c'
3673 AS_O='-o $@'
3674 CC_C='-c'
3675 CC_E='-E -o $@'
3676 CC_O='-o $@'
3677 CXX_C='-c'
3678 CXX_O='-o $@'
3679 OBJCC_C='-c'
3680 OBJCC_E='-E -o $@'
3681 OBJCC_O='-o $@'
3682 X86ASM_O='-o $@'
3683 LD_O='-o $@'
3684 LD_LIB='-l%'
3685 LD_PATH='-L'
3686 HOSTCC_C='-c'
3687 HOSTCC_E='-E -o $@'
3688 HOSTCC_O='-o $@'
3689 HOSTLD_O='-o $@'
3690 NVCC_C='-c'
3691 NVCC_O='-o $@'
3692
3693 host_extralibs='-lm'
3694 host_cflags_filter=echo
3695 host_ldflags_filter=echo
3696
3697 target_path='$(CURDIR)'
3698
3699 # since the object filename is not given with the -MM flag, the compiler
3700 # is only able to print the basename, and we must add the path ourselves
3701 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3702 DEPFLAGS='-MM'
3703
3704 mkdir -p ffbuild
3705
3706 # find source path
3707 if test -f configure; then
3708     source_path=.
3709 else
3710     source_path=$(cd $(dirname "$0"); pwd)
3711     case "$source_path" in
3712         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3713     esac
3714     test -e "$source_path/config.h" &&
3715         die "Out of tree builds are impossible with config.h in source dir."
3716 fi
3717
3718 for v in "$@"; do
3719     r=${v#*=}
3720     l=${v%"$r"}
3721     r=$(sh_quote "$r")
3722     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3723 done
3724
3725 find_things_extern(){
3726     thing=$1
3727     pattern=$2
3728     file=$source_path/$3
3729     out=${4:-$thing}
3730     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3731 }
3732
3733 find_filters_extern(){
3734     file=$source_path/$1
3735     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3736 }
3737
3738 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3739 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3740 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3741 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3742 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3743 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3744 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3745 CODEC_LIST="
3746     $ENCODER_LIST
3747     $DECODER_LIST
3748 "
3749 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3750 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3751 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3752 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3753
3754 AVCODEC_COMPONENTS_LIST="
3755     $BSF_LIST
3756     $DECODER_LIST
3757     $ENCODER_LIST
3758     $HWACCEL_LIST
3759     $PARSER_LIST
3760 "
3761
3762 AVDEVICE_COMPONENTS_LIST="
3763     $INDEV_LIST
3764     $OUTDEV_LIST
3765 "
3766
3767 AVFILTER_COMPONENTS_LIST="
3768     $FILTER_LIST
3769 "
3770
3771 AVFORMAT_COMPONENTS_LIST="
3772     $DEMUXER_LIST
3773     $MUXER_LIST
3774     $PROTOCOL_LIST
3775 "
3776
3777 ALL_COMPONENTS="
3778     $AVCODEC_COMPONENTS_LIST
3779     $AVDEVICE_COMPONENTS_LIST
3780     $AVFILTER_COMPONENTS_LIST
3781     $AVFORMAT_COMPONENTS_LIST
3782 "
3783
3784 for n in $COMPONENT_LIST; do
3785     v=$(toupper ${n%s})_LIST
3786     eval enable \$$v
3787     eval ${n}_if_any="\$$v"
3788 done
3789
3790 enable $ARCH_EXT_LIST
3791
3792 die_unknown(){
3793     echo "Unknown option \"$1\"."
3794     echo "See $0 --help for available options."
3795     exit 1
3796 }
3797
3798 print_in_columns() {
3799     cols=$(expr $ncols / 24)
3800     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3801 }
3802
3803 show_list() {
3804     suffix=_$1
3805     shift
3806     echo $* | sed s/$suffix//g | print_in_columns
3807     exit 0
3808 }
3809
3810 rand_list(){
3811     IFS=', '
3812     set -- $*
3813     unset IFS
3814     for thing; do
3815         comp=${thing%:*}
3816         prob=${thing#$comp}
3817         prob=${prob#:}
3818         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3819         echo "prob ${prob:-0.5}"
3820         printf '%s\n' $comp
3821     done
3822 }
3823
3824 do_random(){
3825     action=$1
3826     shift
3827     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3828     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3829 }
3830
3831 for opt do
3832     optval="${opt#*=}"
3833     case "$opt" in
3834         --extra-ldflags=*)
3835             add_ldflags $optval
3836         ;;
3837         --extra-ldexeflags=*)
3838             add_ldexeflags $optval
3839         ;;
3840         --extra-ldsoflags=*)
3841             add_ldsoflags $optval
3842         ;;
3843         --extra-ldlibflags=*)
3844             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3845                  "removed in the future. Use --extra-ldsoflags instead."
3846             add_ldsoflags $optval
3847         ;;
3848         --extra-libs=*)
3849             add_extralibs $optval
3850         ;;
3851         --disable-devices)
3852             disable $INDEV_LIST $OUTDEV_LIST
3853         ;;
3854         --enable-debug=*)
3855             debuglevel="$optval"
3856         ;;
3857         --disable-programs)
3858             disable $PROGRAM_LIST
3859         ;;
3860         --disable-everything)
3861             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3862         ;;
3863         --disable-all)
3864             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3865             disable $LIBRARY_LIST $PROGRAM_LIST doc
3866             enable avutil
3867         ;;
3868         --enable-random|--disable-random)
3869             action=${opt%%-random}
3870             do_random ${action#--} $COMPONENT_LIST
3871         ;;
3872         --enable-random=*|--disable-random=*)
3873             action=${opt%%-random=*}
3874             do_random ${action#--} $optval
3875         ;;
3876         --enable-sdl)
3877             enable sdl2
3878         ;;
3879         --enable-*=*|--disable-*=*)
3880             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3881             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3882             eval list=\$$(toupper $thing)_LIST
3883             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3884             list=$(filter "$name" $list)
3885             [ "$list" = "" ] && warn "Option $opt did not match anything"
3886             $action $list
3887         ;;
3888         --enable-yasm|--disable-yasm)
3889             warn "The ${opt} option is only provided for compatibility and will be\n"\
3890                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3891             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3892         ;;
3893         --yasmexe=*)
3894             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3895                  "removed in the future. Use --x86asmexe instead."
3896             x86asmexe="$optval"
3897         ;;
3898         --enable-?*|--disable-?*)
3899             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3900             if is_in $option $COMPONENT_LIST; then
3901                 test $action = disable && action=unset
3902                 eval $action \$$(toupper ${option%s})_LIST
3903             elif is_in $option $CMDLINE_SELECT; then
3904                 $action $option
3905             else
3906                 die_unknown $opt
3907             fi
3908         ;;
3909         --list-*)
3910             NAME="${opt#--list-}"
3911             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3912             NAME=${NAME%s}
3913             eval show_list $NAME \$$(toupper $NAME)_LIST
3914         ;;
3915         --help|-h) show_help
3916         ;;
3917         --quiet|-q) quiet=yes
3918         ;;
3919         --fatal-warnings) enable fatal_warnings
3920         ;;
3921         --libfuzzer=*)
3922             libfuzzer_path="$optval"
3923         ;;
3924         *)
3925             optname="${opt%%=*}"
3926             optname="${optname#--}"
3927             optname=$(echo "$optname" | sed 's/-/_/g')
3928             if is_in $optname $CMDLINE_SET; then
3929                 eval $optname='$optval'
3930             elif is_in $optname $CMDLINE_APPEND; then
3931                 append $optname "$optval"
3932             else
3933                 die_unknown $opt
3934             fi
3935         ;;
3936     esac
3937 done
3938
3939 for e in $env; do
3940     eval "export $e"
3941 done
3942
3943 if disabled autodetect; then
3944
3945     # Unless iconv is explicitely disabled by the user, we still want to probe
3946     # for the iconv from the libc.
3947     disabled iconv || enable libc_iconv
3948
3949     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3950     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3951 fi
3952 # Mark specifically enabled, but normally autodetected libraries as requested.
3953 for lib in $AUTODETECT_LIBS; do
3954     enabled $lib && request $lib
3955 done
3956 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3957 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3958 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3959
3960 disabled logging && logfile=/dev/null
3961
3962 # command line configuration sanity checks
3963
3964 # we need to build at least one lib type
3965 if ! enabled_any static shared; then
3966     cat <<EOF
3967 At least one library type must be built.
3968 Specify --enable-static to build the static libraries or --enable-shared to
3969 build the shared libraries as well. To only build the shared libraries specify
3970 --disable-static in addition to --enable-shared.
3971 EOF
3972     exit 1
3973 fi
3974
3975 die_license_disabled() {
3976     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3977 }
3978
3979 die_license_disabled_gpl() {
3980     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3981 }
3982
3983 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3984 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3985
3986 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3987 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3988
3989 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3990
3991 if enabled nonfree; then
3992     license="nonfree and unredistributable"
3993 elif enabled gplv3; then
3994     license="GPL version 3 or later"
3995 elif enabled lgplv3; then
3996     license="LGPL version 3 or later"
3997 elif enabled gpl; then
3998     license="GPL version 2 or later"
3999 else
4000     license="LGPL version 2.1 or later"
4001 fi
4002
4003 enabled_all gnutls openssl &&
4004     die "GnuTLS and OpenSSL must not be enabled at the same time."
4005
4006 enabled_all gnutls mbedtls &&
4007     die "GnuTLS and mbedTLS must not be enabled at the same time."
4008
4009 enabled_all openssl mbedtls &&
4010     die "OpenSSL and mbedTLS must not be enabled at the same time."
4011
4012 # Disable all the library-specific components if the library itself
4013 # is disabled, see AVCODEC_LIST and following _LIST variables.
4014
4015 disable_components(){
4016     disabled ${1} && disable $(
4017         eval components="\$$(toupper ${1})_COMPONENTS"
4018         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4019     )
4020 }
4021
4022 map 'disable_components $v' $LIBRARY_LIST
4023
4024 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4025 set >> $logfile
4026
4027 test -n "$valgrind" && toolchain="valgrind-memcheck"
4028
4029 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4030     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4031     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4032 }
4033
4034 case "$toolchain" in
4035     *-asan)
4036         cc_default="${toolchain%-asan}"
4037         add_cflags  -fsanitize=address
4038         add_ldflags -fsanitize=address
4039     ;;
4040     *-msan)
4041         cc_default="${toolchain%-msan}"
4042         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4043         add_ldflags -fsanitize=memory
4044     ;;
4045     *-tsan)
4046         cc_default="${toolchain%-tsan}"
4047         add_cflags  -fsanitize=thread
4048         add_ldflags -fsanitize=thread
4049         case "$toolchain" in
4050             gcc-tsan)
4051                 add_cflags  -fPIC
4052                 add_ldflags -fPIC
4053                 ;;
4054         esac
4055     ;;
4056     *-usan)
4057         cc_default="${toolchain%-usan}"
4058         add_cflags  -fsanitize=undefined
4059         add_ldflags -fsanitize=undefined
4060     ;;
4061     valgrind-*)
4062         target_exec_default="valgrind"
4063         case "$toolchain" in
4064             valgrind-massif)
4065                 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"
4066                 ;;
4067             valgrind-memcheck)
4068                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4069                 ;;
4070         esac
4071     ;;
4072     msvc)
4073         # Check whether the current MSVC version needs the C99 converter.
4074         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4075         # support enough of C99 to build ffmpeg. Default to the new
4076         # behaviour if the regexp was unable to match anything, since this
4077         # successfully parses the version number of existing supported
4078         # versions that require the converter (MSVC 2010 and 2012).
4079         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4080         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4081             cc_default="cl"
4082             cxx_default="cl"
4083         else
4084             die "Unsupported MSVC version (2013 or newer required)"
4085         fi
4086         ld_default="$source_path/compat/windows/mslink"
4087         nm_default="dumpbin -symbols"
4088         ar_default="lib"
4089         case "$arch" in
4090         aarch64|arm64)
4091             as_default="armasm64"
4092             ;;
4093         arm*)
4094             as_default="armasm"
4095             ;;
4096         esac
4097         target_os_default="win32"
4098         # Use a relative path for TMPDIR. This makes sure all the
4099         # ffconf temp files are written with a relative path, avoiding
4100         # issues with msys/win32 path conversion for MSVC parameters
4101         # such as -Fo<file> or -out:<file>.
4102         TMPDIR=.
4103     ;;
4104     icl)
4105         cc_default="icl"
4106         ld_default="xilink"
4107         nm_default="dumpbin -symbols"
4108         ar_default="xilib"
4109         target_os_default="win32"
4110         TMPDIR=.
4111     ;;
4112     gcov)
4113         add_cflags  -fprofile-arcs -ftest-coverage
4114         add_ldflags -fprofile-arcs -ftest-coverage
4115     ;;
4116     llvm-cov)
4117         add_cflags -fprofile-arcs -ftest-coverage
4118         add_ldflags --coverage
4119     ;;
4120     hardened)
4121         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4122         add_cflags   -fno-strict-overflow -fstack-protector-all
4123         add_ldflags  -Wl,-z,relro -Wl,-z,now
4124         add_cflags   -fPIE
4125         add_ldexeflags -fPIE -pie
4126     ;;
4127     ?*)
4128         die "Unknown toolchain $toolchain"
4129     ;;
4130 esac
4131
4132 if test -n "$cross_prefix"; then
4133     test -n "$arch" && test -n "$target_os" ||
4134         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4135     enable cross_compile
4136 fi
4137
4138 set_default target_os
4139 if test "$target_os" = android; then
4140     cc_default="clang"
4141 fi
4142
4143 ar_default="${cross_prefix}${ar_default}"
4144 cc_default="${cross_prefix}${cc_default}"
4145 cxx_default="${cross_prefix}${cxx_default}"
4146 nm_default="${cross_prefix}${nm_default}"
4147 pkg_config_default="${cross_prefix}${pkg_config_default}"
4148 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4149     ranlib_default="${cross_prefix}${ranlib_default} -D"
4150 else
4151     ranlib_default="${cross_prefix}${ranlib_default}"
4152 fi
4153 strip_default="${cross_prefix}${strip_default}"
4154 windres_default="${cross_prefix}${windres_default}"
4155
4156 sysinclude_default="${sysroot}/usr/include"
4157
4158 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4159     target_exec x86asmexe nvcc
4160 enabled cross_compile || host_cc_default=$cc
4161 set_default host_cc
4162
4163 pkg_config_fail_message=""
4164 if ! $pkg_config --version >/dev/null 2>&1; then
4165     warn "$pkg_config not found, library detection may fail."
4166     pkg_config=false
4167 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4168     pkg_config_fail_message="
4169 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4170 fi
4171
4172 if test $doxygen != $doxygen_default && \
4173   ! $doxygen --version >/dev/null 2>&1; then
4174     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4175 fi
4176
4177 exesuf() {
4178     case $1 in
4179         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4180     esac
4181 }
4182
4183 EXESUF=$(exesuf $target_os)
4184 HOSTEXESUF=$(exesuf $host_os)
4185
4186 # set temporary file name
4187 : ${TMPDIR:=$TEMPDIR}
4188 : ${TMPDIR:=$TMP}
4189 : ${TMPDIR:=/tmp}
4190
4191 if [ -n "$tempprefix" ] ; then
4192     mktemp(){
4193         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4194         echo "$tmpname"
4195         mkdir "$tmpname"
4196     }
4197 elif ! test_cmd mktemp -u XXXXXX; then
4198     # simple replacement for missing mktemp
4199     # NOT SAFE FOR GENERAL USE
4200     mktemp(){
4201         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4202         echo "$tmpname"
4203         mkdir "$tmpname"
4204     }
4205 fi
4206
4207 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4208     die "Unable to create temporary directory in $TMPDIR."
4209
4210 tmpfile(){
4211     tmp="${FFTMPDIR}/test"$2
4212     (set -C; exec > $tmp) 2> /dev/null ||
4213         die "Unable to create temporary file in $FFTMPDIR."
4214     eval $1=$tmp
4215 }
4216
4217 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4218 trap 'exit 2' INT
4219
4220 tmpfile TMPASM .asm
4221 tmpfile TMPC   .c
4222 tmpfile TMPCPP .cpp
4223 tmpfile TMPE   $EXESUF
4224 tmpfile TMPH   .h
4225 tmpfile TMPM   .m
4226 tmpfile TMPO   .o
4227 tmpfile TMPS   .S
4228 tmpfile TMPSH  .sh
4229 tmpfile TMPV   .ver
4230
4231 unset -f mktemp
4232
4233 chmod +x $TMPE
4234
4235 # make sure we can execute files in $TMPDIR
4236 cat > $TMPSH 2>> $logfile <<EOF
4237 #! /bin/sh
4238 EOF
4239 chmod +x $TMPSH >> $logfile 2>&1
4240 if ! $TMPSH >> $logfile 2>&1; then
4241     cat <<EOF
4242 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4243 variable to another directory and make sure that it is not mounted noexec.
4244 EOF
4245     die "Sanity test failed."
4246 fi
4247
4248 armasm_flags(){
4249     for flag; do
4250         case $flag in
4251             # Filter out MSVC cl.exe options from cflags that shouldn't
4252             # be passed to gas-preprocessor
4253             -M[TD]*)                                            ;;
4254             *)                  echo $flag                      ;;
4255         esac
4256    done
4257 }
4258
4259 cparser_flags(){
4260     for flag; do
4261         case $flag in
4262             -Wno-switch)             echo -Wno-switch-enum ;;
4263             -Wno-format-zero-length) ;;
4264             -Wdisabled-optimization) ;;
4265             -Wno-pointer-sign)       echo -Wno-other ;;
4266             *)                       echo $flag ;;
4267         esac
4268     done
4269 }
4270
4271 msvc_common_flags(){
4272     for flag; do
4273         case $flag in
4274             # In addition to specifying certain flags under the compiler
4275             # specific filters, they must be specified here as well or else the
4276             # generic catch all at the bottom will print the original flag.
4277             -Wall)                ;;
4278             -Wextra)              ;;
4279             -std=c99)             ;;
4280             # Common flags
4281             -fomit-frame-pointer) ;;
4282             -g)                   echo -Z7 ;;
4283             -fno-math-errno)      ;;
4284             -fno-common)          ;;
4285             -fno-signed-zeros)    ;;
4286             -fPIC)                ;;
4287             -mthumb)              ;;
4288             -march=*)             ;;
4289             -lz)                  echo zlib.lib ;;
4290             -lx264)               echo libx264.lib ;;
4291             -lstdc++)             ;;
4292             -l*)                  echo ${flag#-l}.lib ;;
4293             -LARGEADDRESSAWARE)   echo $flag ;;
4294             -L*)                  echo -libpath:${flag#-L} ;;
4295             *)                    echo $flag ;;
4296         esac
4297     done
4298 }
4299
4300 msvc_flags(){
4301     msvc_common_flags "$@"
4302     for flag; do
4303         case $flag in
4304             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4305                                        -wd4554 ;;
4306             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4307                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4308                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4309                                        -wd4307 \
4310                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4311         esac
4312     done
4313 }
4314
4315 icl_flags(){
4316     msvc_common_flags "$@"
4317     for flag; do
4318         case $flag in
4319             # Despite what Intel's documentation says -Wall, which is supported
4320             # on Windows, does enable remarks so disable them here.
4321             -Wall)                echo $flag -Qdiag-disable:remark ;;
4322             -std=c99)             echo -Qstd=c99 ;;
4323             -flto)                echo -ipo ;;
4324         esac
4325     done
4326 }
4327
4328 icc_flags(){
4329     for flag; do
4330         case $flag in
4331             -flto)                echo -ipo ;;
4332             *)                    echo $flag ;;
4333         esac
4334     done
4335 }
4336
4337 suncc_flags(){
4338     for flag; do
4339         case $flag in
4340             -march=*|-mcpu=*)
4341                 case "${flag#*=}" in
4342                     native)                   echo -xtarget=native       ;;
4343                     v9|niagara)               echo -xarch=sparc          ;;
4344                     ultrasparc)               echo -xarch=sparcvis       ;;
4345                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4346                     i586|pentium)             echo -xchip=pentium        ;;
4347                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4348                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4349                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4350                     pentium4*)          echo -xtarget=pentium4           ;;
4351                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4352                     *-sse3)             echo -xarch=sse3                 ;;
4353                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4354                     bonnell)                   echo -xarch=ssse3         ;;
4355                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4356                     westmere)                  echo -xtarget=westmere    ;;
4357                     silvermont)                echo -xarch=sse4_2        ;;
4358                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4359                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4360                                                echo -xarch=avx           ;;
4361                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4362                     btver1)                    echo -xarch=amdsse4a      ;;
4363                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4364                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4365                     k8|opteron|athlon64|athlon-fx)
4366                                                echo -xarch=sse2a         ;;
4367                     athlon*)                   echo -xarch=pentium_proa  ;;
4368                 esac
4369                 ;;
4370             -std=c99)             echo -xc99              ;;
4371             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4372             -fPIC)                echo -KPIC -xcode=pic32 ;;
4373             -W*,*)                echo $flag              ;;
4374             -f*-*|-W*|-mimpure-text)                      ;;
4375             -shared)              echo -G                 ;;
4376             *)                    echo $flag              ;;
4377         esac
4378     done
4379 }
4380
4381 probe_cc(){
4382     pfx=$1
4383     _cc=$2
4384     first=$3
4385
4386     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4387     unset _ld_o _ldflags _ld_lib _ld_path
4388     unset _depflags _DEPCMD _DEPFLAGS
4389     _flags_filter=echo
4390
4391     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4392         true # no-op to avoid reading stdin in following checks
4393     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4394         _type=llvm_gcc
4395         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4396         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4397         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4398         _cflags_speed='-O3'
4399         _cflags_size='-Os'
4400     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4401         _type=gcc
4402         gcc_version=$($_cc --version | head -n1)
4403         gcc_basever=$($_cc -dumpversion)
4404         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4405         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4406         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4407         case $gcc_basever in
4408             2) ;;
4409             2.*) ;;
4410             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4411         esac
4412         if [ "$first" = true ]; then
4413             case $gcc_basever in
4414                 4.2*)
4415                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4416             esac
4417         fi
4418         _cflags_speed='-O3'
4419         _cflags_size='-Os'
4420     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4421         _type=icc
4422         _ident=$($_cc --version | head -n1)
4423         _depflags='-MMD'
4424         _cflags_speed='-O3'
4425         _cflags_size='-Os'
4426         _cflags_noopt='-O1'
4427         _flags_filter=icc_flags
4428     elif $_cc -v 2>&1 | grep -q xlc; then
4429         _type=xlc
4430         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4431         _cflags_speed='-O5'
4432         _cflags_size='-O5 -qcompact'
4433     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4434         test -d "$sysroot" || die "No valid sysroot specified."
4435         _type=armcc
4436         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4437         armcc_conf="$PWD/armcc.conf"
4438         $_cc --arm_linux_configure                 \
4439              --arm_linux_config_file="$armcc_conf" \
4440              --configure_sysroot="$sysroot"        \
4441              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4442              die "Error creating armcc configuration file."
4443         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4444         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4445         as_default="${cross_prefix}gcc"
4446         _depflags='-MMD'
4447         _cflags_speed='-O3'
4448         _cflags_size='-Os'
4449     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4450         _type=clang
4451         _ident=$($_cc --version 2>/dev/null | head -n1)
4452         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4453         _cflags_speed='-O3'
4454         _cflags_size='-Oz'
4455     elif $_cc -V 2>&1 | grep -q Sun; then
4456         _type=suncc
4457         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4458         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4459         _DEPFLAGS='-xM1 -xc99'
4460         _ldflags='-std=c99'
4461         _cflags_speed='-O5'
4462         _cflags_size='-O5 -xspace'
4463         _flags_filter=suncc_flags
4464     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4465         _type=pathscale
4466         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4467         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4468         _cflags_speed='-O2'
4469         _cflags_size='-Os'
4470         _flags_filter='filter_out -Wdisabled-optimization'
4471     elif $_cc -v 2>&1 | grep -q Open64; then
4472         _type=open64
4473         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4474         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4475         _cflags_speed='-O2'
4476         _cflags_size='-Os'
4477         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4478     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4479         _type=armasm
4480         _ident=$($_cc | head -n1)
4481         # 4509: "This form of conditional instruction is deprecated"
4482         _flags="-nologo -ignore 4509"
4483         _flags_filter=armasm_flags
4484     elif $_cc 2>&1 | grep -q Intel; then
4485         _type=icl
4486         _ident=$($_cc 2>&1 | head -n1)
4487         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4488         # Not only is O3 broken on 13.x+ but it is slower on all previous
4489         # versions (tested) as well.
4490         _cflags_speed="-O2"
4491         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4492         if $_cc 2>&1 | grep -q Linker; then
4493             _ld_o='-out:$@'
4494         else
4495             _ld_o='-Fe$@'
4496         fi
4497         _cc_o='-Fo$@'
4498         _cc_e='-P'
4499         _flags_filter=icl_flags
4500         _ld_lib='lib%.a'
4501         _ld_path='-libpath:'
4502         # -Qdiag-error to make icl error when seeing certain unknown arguments
4503         _flags='-nologo -Qdiag-error:4044,10157'
4504         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4505         # with MSVC which enables it by default.
4506         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4507         disable stripping
4508     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4509         # lld can emulate multiple different linkers; in ms link.exe mode,
4510         # the -? parameter gives the help output which contains an identifyable
4511         # string, while it gives an error in other modes.
4512         _type=lld-link
4513         # The link.exe mode doesn't have a switch for getting the version,
4514         # but we can force it back to gnu mode and get the version from there.
4515         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4516         _ld_o='-out:$@'
4517         _flags_filter=msvc_flags
4518         _ld_lib='lib%.a'
4519         _ld_path='-libpath:'
4520     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4521         _type=msvc
4522         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4523         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4524         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4525         _cflags_speed="-O2"
4526         _cflags_size="-O1"
4527         _cflags_noopt="-O1"
4528         if $_cc -nologo- 2>&1 | grep -q Linker; then
4529             _ld_o='-out:$@'
4530         else
4531             _ld_o='-Fe$@'
4532         fi
4533         _cc_o='-Fo$@'
4534         _cc_e='-P -Fi$@'
4535         _flags_filter=msvc_flags
4536         _ld_lib='lib%.a'
4537         _ld_path='-libpath:'
4538         _flags='-nologo'
4539         disable stripping
4540     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4541         _type=cparser
4542         _ident=$($_cc --version | head -n1)
4543         _depflags='-MMD'
4544         _cflags_speed='-O4'
4545         _cflags_size='-O2'
4546         _flags_filter=cparser_flags
4547     fi
4548
4549     eval ${pfx}_type=\$_type
4550     eval ${pfx}_ident=\$_ident
4551 }
4552
4553 set_ccvars(){
4554     eval ${1}_C=\${_cc_c-\${${1}_C}}
4555     eval ${1}_E=\${_cc_e-\${${1}_E}}
4556     eval ${1}_O=\${_cc_o-\${${1}_O}}
4557
4558     if [ -n "$_depflags" ]; then
4559         eval ${1}_DEPFLAGS=\$_depflags
4560     else
4561         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4562         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4563         eval DEP${1}FLAGS=\$_flags
4564     fi
4565 }
4566
4567 probe_cc cc "$cc" "true"
4568 cflags_filter=$_flags_filter
4569 cflags_speed=$_cflags_speed
4570 cflags_size=$_cflags_size
4571 cflags_noopt=$_cflags_noopt
4572 add_cflags $_flags $_cflags
4573 cc_ldflags=$_ldflags
4574 set_ccvars CC
4575 set_ccvars CXX
4576
4577 probe_cc hostcc "$host_cc"
4578 host_cflags_filter=$_flags_filter
4579 host_cflags_speed=$_cflags_speed
4580 add_host_cflags  $_flags $_cflags
4581 set_ccvars HOSTCC
4582
4583 test -n "$cc_type" && enable $cc_type ||
4584     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4585
4586 : ${as_default:=$cc}
4587 : ${objcc_default:=$cc}
4588 : ${dep_cc_default:=$cc}
4589 : ${ld_default:=$cc}
4590 : ${host_ld_default:=$host_cc}
4591 set_default ar as objcc dep_cc ld ln_s host_ld windres
4592
4593 probe_cc as "$as"
4594 asflags_filter=$_flags_filter
4595 add_asflags $_flags $_cflags
4596 set_ccvars AS
4597
4598 probe_cc objcc "$objcc"
4599 objcflags_filter=$_flags_filter
4600 add_objcflags $_flags $_cflags
4601 set_ccvars OBJC
4602
4603 probe_cc ld "$ld"
4604 ldflags_filter=$_flags_filter
4605 add_ldflags $_flags $_ldflags
4606 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4607 LD_O=${_ld_o-$LD_O}
4608 LD_LIB=${_ld_lib-$LD_LIB}
4609 LD_PATH=${_ld_path-$LD_PATH}
4610
4611 probe_cc hostld "$host_ld"
4612 host_ldflags_filter=$_flags_filter
4613 add_host_ldflags $_flags $_ldflags
4614 HOSTLD_O=${_ld_o-$HOSTLD_O}
4615
4616 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4617     probe_cc depcc "$dep_cc"
4618     CCDEP=${_DEPCMD:-$DEPCMD}
4619     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4620     DEPCCFLAGS=$_flags
4621 fi
4622
4623 if $ar 2>&1 | grep -q Microsoft; then
4624     arflags="-nologo"
4625     ar_o='-out:$@'
4626 elif $ar 2>&1 | grep -q "\[D\] "; then
4627     arflags="rcD"
4628     ar_o='$@'
4629 else
4630     arflags="rc"
4631     ar_o='$@'
4632 fi
4633
4634 add_cflags $extra_cflags
4635 add_cxxflags $extra_cxxflags
4636 add_objcflags $extra_objcflags
4637 add_asflags $extra_cflags
4638
4639 if test -n "$sysroot"; then
4640     case "$cc_type" in
4641         gcc|llvm_gcc|clang)
4642             add_cppflags --sysroot="$sysroot"
4643             add_ldflags --sysroot="$sysroot"
4644         ;;
4645     esac
4646 fi
4647
4648 if test "$cpu" = host; then
4649     enabled cross_compile &&
4650         die "--cpu=host makes no sense when cross-compiling."
4651
4652     case "$cc_type" in
4653         gcc|llvm_gcc)
4654             check_native(){
4655                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4656                 sed -n "/cc1.*$1=/{
4657                             s/.*$1=\\([^ ]*\\).*/\\1/
4658                             p
4659                             q
4660                         }" $TMPE
4661             }
4662             cpu=$(check_native -march || check_native -mcpu)
4663         ;;
4664         clang)
4665             check_native(){
4666                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4667                 sed -n "/cc1.*-target-cpu /{
4668                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4669                             p
4670                             q
4671                         }" $TMPE
4672             }
4673             cpu=$(check_native -march)
4674         ;;
4675     esac
4676
4677     test "${cpu:-host}" = host &&
4678         die "--cpu=host not supported with compiler $cc"
4679 fi
4680
4681 # Deal with common $arch aliases
4682 case "$arch" in
4683     aarch64|arm64)
4684         arch="aarch64"
4685     ;;
4686     arm*|iPad*|iPhone*)
4687         arch="arm"
4688     ;;
4689     mips*|IP*)
4690         case "$arch" in
4691         *el)
4692             add_cppflags -EL
4693             add_ldflags -EL
4694         ;;
4695         *eb)
4696             add_cppflags -EB
4697             add_ldflags -EB
4698         ;;
4699         esac
4700         arch="mips"
4701     ;;
4702     parisc*|hppa*)
4703         arch="parisc"
4704     ;;
4705     "Power Macintosh"|ppc*|powerpc*)
4706         arch="ppc"
4707     ;;
4708     s390|s390x)
4709         arch="s390"
4710     ;;
4711     sh4|sh)
4712         arch="sh4"
4713     ;;
4714     sun4*|sparc*)
4715         arch="sparc"
4716     ;;
4717     tilegx|tile-gx)
4718         arch="tilegx"
4719     ;;
4720     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4721         arch="x86"
4722     ;;
4723 esac
4724
4725 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4726 enable $arch
4727
4728 # Add processor-specific flags
4729 if enabled aarch64; then
4730
4731     case $cpu in
4732         armv*)
4733             cpuflags="-march=$cpu"
4734         ;;
4735         *)
4736             cpuflags="-mcpu=$cpu"
4737         ;;
4738     esac
4739
4740 elif enabled alpha; then
4741
4742     cpuflags="-mcpu=$cpu"
4743
4744 elif enabled arm; then
4745
4746     check_arm_arch() {
4747         test_cpp_condition stddef.h \
4748             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4749             $cpuflags
4750     }
4751
4752     probe_arm_arch() {
4753         if   check_arm_arch 4;        then echo armv4
4754         elif check_arm_arch 4T;       then echo armv4t
4755         elif check_arm_arch 5;        then echo armv5
4756         elif check_arm_arch 5E;       then echo armv5e
4757         elif check_arm_arch 5T;       then echo armv5t
4758         elif check_arm_arch 5TE;      then echo armv5te
4759         elif check_arm_arch 5TEJ;     then echo armv5te
4760         elif check_arm_arch 6;        then echo armv6
4761         elif check_arm_arch 6J;       then echo armv6j
4762         elif check_arm_arch 6K;       then echo armv6k
4763         elif check_arm_arch 6Z;       then echo armv6z
4764         elif check_arm_arch 6KZ;      then echo armv6zk
4765         elif check_arm_arch 6ZK;      then echo armv6zk
4766         elif check_arm_arch 6T2;      then echo armv6t2
4767         elif check_arm_arch 7;        then echo armv7
4768         elif check_arm_arch 7A  7_A;  then echo armv7-a
4769         elif check_arm_arch 7S;       then echo armv7-a
4770         elif check_arm_arch 7R  7_R;  then echo armv7-r
4771         elif check_arm_arch 7M  7_M;  then echo armv7-m
4772         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4773         elif check_arm_arch 8A  8_A;  then echo armv8-a
4774         fi
4775     }
4776
4777     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4778
4779     case $cpu in
4780         armv*)
4781             cpuflags="-march=$cpu"
4782             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4783         ;;
4784         *)
4785             cpuflags="-mcpu=$cpu"
4786             case $cpu in
4787                 cortex-a*)                               subarch=armv7a  ;;
4788                 cortex-r*)                               subarch=armv7r  ;;
4789                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4790                 arm11*)                                  subarch=armv6   ;;
4791                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4792                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4793                 *)                             subarch=$(probe_arm_arch) ;;
4794             esac
4795         ;;
4796     esac
4797
4798     case "$subarch" in
4799         armv5t*)    enable fast_clz                ;;
4800         armv[6-8]*)
4801             enable fast_clz
4802             disabled fast_unaligned || enable fast_unaligned
4803             ;;
4804     esac
4805
4806 elif enabled avr32; then
4807
4808     case $cpu in
4809         ap7[02]0[0-2])
4810             subarch="avr32_ap"
4811             cpuflags="-mpart=$cpu"
4812         ;;
4813         ap)
4814             subarch="avr32_ap"
4815             cpuflags="-march=$cpu"
4816         ;;
4817         uc3[ab]*)
4818             subarch="avr32_uc"
4819             cpuflags="-mcpu=$cpu"
4820         ;;
4821         uc)
4822             subarch="avr32_uc"
4823             cpuflags="-march=$cpu"
4824         ;;
4825     esac
4826
4827 elif enabled bfin; then
4828
4829     cpuflags="-mcpu=$cpu"
4830
4831 elif enabled mips; then
4832
4833     cpuflags="-march=$cpu"
4834
4835     if [ "$cpu" != "generic" ]; then
4836         disable mips32r2
4837         disable mips32r5
4838         disable mips64r2
4839         disable mips32r6
4840         disable mips64r6
4841         disable loongson2
4842         disable loongson3
4843
4844         case $cpu in
4845             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4846                 enable mips32r2
4847                 disable msa
4848             ;;
4849             p5600|i6400|p6600)
4850                 disable mipsdsp
4851                 disable mipsdspr2
4852             ;;
4853             loongson*)
4854                 enable loongson2
4855                 enable loongson3
4856                 enable local_aligned
4857                 enable simd_align_16
4858                 enable fast_64bit
4859                 enable fast_clz
4860                 enable fast_cmov
4861                 enable fast_unaligned
4862                 disable aligned_stack
4863                 disable mipsdsp
4864                 disable mipsdspr2
4865                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4866                 if [ $cc == gcc ]; then
4867                     gcc_version=$(gcc -dumpversion)
4868                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4869                         expensive_optimization_flag=""
4870                     else
4871                         expensive_optimization_flag="-fno-expensive-optimizations"
4872                     fi
4873                 fi
4874                 case $cpu in
4875                     loongson3*)
4876                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4877                     ;;
4878                     loongson2e)
4879                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4880                     ;;
4881                     loongson2f)
4882                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4883                     ;;
4884                 esac
4885             ;;
4886             *)
4887                 # Unknown CPU. Disable everything.
4888                 warn "unknown CPU. Disabling all MIPS optimizations."
4889                 disable mipsfpu
4890                 disable mipsdsp
4891                 disable mipsdspr2
4892                 disable msa
4893                 disable mmi
4894             ;;
4895         esac
4896
4897         case $cpu in
4898             24kc)
4899                 disable mipsfpu
4900                 disable mipsdsp
4901                 disable mipsdspr2
4902             ;;
4903             24kf*)
4904                 disable mipsdsp
4905                 disable mipsdspr2
4906             ;;
4907             24kec|34kc|1004kc)
4908                 disable mipsfpu
4909                 disable mipsdspr2
4910             ;;
4911             24kef*|34kf*|1004kf*)
4912                 disable mipsdspr2
4913             ;;
4914             74kc)
4915                 disable mipsfpu
4916             ;;
4917             p5600)
4918                 enable mips32r5
4919                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4920             ;;
4921             i6400)
4922                 enable mips64r6
4923                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4924             ;;
4925             p6600)
4926                 enable mips64r6
4927                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4928             ;;
4929         esac
4930     else
4931         # We do not disable anything. Is up to the user to disable the unwanted features.
4932         warn 'generic cpu selected'
4933     fi
4934
4935 elif enabled ppc; then
4936
4937     disable ldbrx
4938
4939     case $(tolower $cpu) in
4940         601|ppc601|powerpc601)
4941             cpuflags="-mcpu=601"
4942             disable altivec
4943         ;;
4944         603*|ppc603*|powerpc603*)
4945             cpuflags="-mcpu=603"
4946             disable altivec
4947         ;;
4948         604*|ppc604*|powerpc604*)
4949             cpuflags="-mcpu=604"
4950             disable altivec
4951         ;;
4952         g3|75*|ppc75*|powerpc75*)
4953             cpuflags="-mcpu=750"
4954             disable altivec
4955         ;;
4956         g4|745*|ppc745*|powerpc745*)
4957             cpuflags="-mcpu=7450"
4958             disable vsx
4959         ;;
4960         74*|ppc74*|powerpc74*)
4961             cpuflags="-mcpu=7400"
4962             disable vsx
4963         ;;
4964         g5|970|ppc970|powerpc970)
4965             cpuflags="-mcpu=970"
4966             disable vsx
4967         ;;
4968         power[3-6]*)
4969             cpuflags="-mcpu=$cpu"
4970             disable vsx
4971         ;;
4972         power[7-8]*)
4973             cpuflags="-mcpu=$cpu"
4974         ;;
4975         cell)
4976             cpuflags="-mcpu=cell"
4977             enable ldbrx
4978             disable vsx
4979         ;;
4980         e500mc)
4981             cpuflags="-mcpu=e500mc"
4982             disable altivec
4983         ;;
4984         e500v2)
4985             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4986             disable altivec
4987             disable dcbzl
4988         ;;
4989         e500)
4990             cpuflags="-mcpu=8540 -mhard-float"
4991             disable altivec
4992             disable dcbzl
4993         ;;
4994     esac
4995
4996 elif enabled sparc; then
4997
4998     case $cpu in
4999         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5000             cpuflags="-mcpu=$cpu"
5001         ;;
5002         ultrasparc*|niagara[234])
5003             cpuflags="-mcpu=$cpu"
5004         ;;
5005     esac
5006
5007 elif enabled x86; then
5008
5009     case $cpu in
5010         i[345]86|pentium)
5011             cpuflags="-march=$cpu"
5012             disable i686
5013             disable mmx
5014         ;;
5015         # targets that do NOT support nopl and conditional mov (cmov)
5016         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5017             cpuflags="-march=$cpu"
5018             disable i686
5019         ;;
5020         # targets that do support nopl and conditional mov (cmov)
5021         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5022         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5023         |amdfam10|barcelona|b[dt]ver*|znver*)
5024             cpuflags="-march=$cpu"
5025             enable i686
5026             enable fast_cmov
5027         ;;
5028         # targets that do support conditional mov but on which it's slow
5029         pentium4|pentium4m|prescott|nocona)
5030             cpuflags="-march=$cpu"
5031             enable i686
5032             disable fast_cmov
5033         ;;
5034     esac
5035
5036 fi
5037
5038 if [ "$cpu" != generic ]; then
5039     add_cflags  $cpuflags
5040     add_asflags $cpuflags
5041     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5042 fi
5043
5044 # compiler sanity check
5045 test_exec <<EOF
5046 int main(void){ return 0; }
5047 EOF
5048 if test "$?" != 0; then
5049     echo "$cc is unable to create an executable file."
5050     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5051         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5052         echo "Only do this if you know what cross compiling means."
5053     fi
5054     die "C compiler test failed."
5055 fi
5056
5057 add_cppflags -D_ISOC99_SOURCE
5058 add_cxxflags -D__STDC_CONSTANT_MACROS
5059 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5060
5061 # some compilers silently accept -std=c11, so we also need to check that the
5062 # version macro is defined properly
5063 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5064     add_cflags -std=c11 ||
5065     check_cflags -std=c99
5066
5067 check_cppflags -D_FILE_OFFSET_BITS=64
5068 check_cppflags -D_LARGEFILE_SOURCE
5069
5070 add_host_cppflags -D_ISOC99_SOURCE
5071 check_host_cflags -std=c99
5072 check_host_cflags -Wall
5073 check_host_cflags $host_cflags_speed
5074
5075 check_64bit(){
5076     arch32=$1
5077     arch64=$2
5078     expr=${3:-'sizeof(void *) > 4'}
5079     test_code cc "" "int test[2*($expr) - 1]" &&
5080         subarch=$arch64 || subarch=$arch32
5081     enable $subarch
5082 }
5083
5084 case "$arch" in
5085     aarch64|alpha|ia64)
5086         enabled shared && enable_weak pic
5087     ;;
5088     mips)
5089         check_64bit mips mips64 '_MIPS_SIM > 1'
5090         enabled shared && enable_weak pic
5091     ;;
5092     parisc)
5093         check_64bit parisc parisc64
5094         enabled shared && enable_weak pic
5095     ;;
5096     ppc)
5097         check_64bit ppc ppc64
5098         enabled shared && enable_weak pic
5099     ;;
5100     s390)
5101         check_64bit s390 s390x
5102         enabled shared && enable_weak pic
5103     ;;
5104     sparc)
5105         check_64bit sparc sparc64
5106         enabled shared && enable_weak pic
5107     ;;
5108     x86)
5109         check_64bit x86_32 x86_64
5110         # Treat x32 as x64 for now. Note it also needs pic if shared
5111         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5112             subarch=x86_64 && enable x86_64 && disable x86_32
5113         if enabled x86_64; then
5114             enabled shared && enable_weak pic
5115             objformat=elf64
5116         fi
5117     ;;
5118 esac
5119
5120 # OS specific
5121 case $target_os in
5122     aix)
5123         SHFLAGS=-shared
5124         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5125         enabled shared && add_ldflags -Wl,-brtl
5126         arflags='-Xany -r -c'
5127         striptype=""
5128         ;;
5129     android)
5130         disable symver
5131         enable section_data_rel_ro
5132         add_cflags -fPIE
5133         add_ldexeflags -fPIE -pie
5134         SLIB_INSTALL_NAME='$(SLIBNAME)'
5135         SLIB_INSTALL_LINKS=
5136         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5137         ;;
5138     haiku)
5139         prefix_default="/boot/common"
5140         network_extralibs="-lnetwork"
5141         host_extralibs=
5142         ;;
5143     sunos)
5144         SHFLAGS='-shared -Wl,-h,$$(@F)'
5145         enabled x86 && append SHFLAGS -mimpure-text
5146         network_extralibs="-lsocket -lnsl"
5147         add_cppflags -D__EXTENSIONS__
5148         # When using suncc to build, the Solaris linker will mark
5149         # an executable with each instruction set encountered by
5150         # the Solaris assembler.  As our libraries contain their own
5151         # guards for processor-specific code, instead suppress
5152         # generation of the HWCAPS ELF section on Solaris x86 only.
5153         enabled_all suncc x86 &&
5154             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5155             add_ldflags -Wl,-M,mapfile
5156         nm_default='nm -P -g'
5157         striptype=""
5158         version_script='-M'
5159         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5160         ;;
5161     netbsd)
5162         disable symver
5163         oss_indev_extralibs="-lossaudio"
5164         oss_outdev_extralibs="-lossaudio"
5165         enabled gcc || check_ldflags -Wl,-zmuldefs
5166         ;;
5167     openbsd|bitrig)
5168         disable symver
5169         striptype=""
5170         SHFLAGS='-shared'
5171         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5172         SLIB_INSTALL_LINKS=
5173         oss_indev_extralibs="-lossaudio"
5174         oss_outdev_extralibs="-lossaudio"
5175         ;;
5176     dragonfly)
5177         disable symver
5178         ;;
5179     freebsd)
5180         ;;
5181     bsd/os)
5182         add_extralibs -lpoll -lgnugetopt
5183         strip="strip -d"
5184         ;;
5185     darwin)
5186         enabled ppc && add_asflags -force_cpusubtype_ALL
5187         install_name_dir_default='$(SHLIBDIR)'
5188         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5189         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5190         strip="${strip} -x"
5191         add_ldflags -Wl,-dynamic,-search_paths_first
5192         check_cflags -Werror=partial-availability
5193         SLIBSUF=".dylib"
5194         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5195         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5196         enabled x86_64 && objformat="macho64" || objformat="macho32"
5197         enabled_any pic shared x86_64 ||
5198             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5199         check_headers dispatch/dispatch.h &&
5200             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5201         if test -n "$sysroot"; then
5202             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5203             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5204         fi
5205         version_script='-exported_symbols_list'
5206         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5207         ;;
5208     msys*)
5209         die "Native MSYS builds are discouraged, please use the MINGW environment."
5210         ;;
5211     mingw32*|mingw64*)
5212         target_os=mingw32
5213         LIBTARGET=i386
5214         if enabled x86_64; then
5215             LIBTARGET="i386:x86-64"
5216         elif enabled arm; then
5217             LIBTARGET="arm"
5218         elif enabled aarch64; then
5219             LIBTARGET="arm64"
5220         fi
5221         if enabled shared; then
5222             # Cannot build both shared and static libs when using dllimport.
5223             disable static
5224         fi
5225         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5226         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5227         shlibdir_default="$bindir_default"
5228         SLIBPREF=""
5229         SLIBSUF=".dll"
5230         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5231         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5232         if test_cmd lib.exe -list; then
5233             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5234             if enabled x86_64; then
5235                 LIBTARGET=x64
5236             fi
5237         else
5238             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5239         fi
5240         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5241         SLIB_INSTALL_LINKS=
5242         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5243         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5244         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5245         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5246         enabled x86_64 && objformat="win64" || objformat="win32"
5247         dlltool="${cross_prefix}dlltool"
5248         ranlib=:
5249         enable dos_paths
5250         check_ldflags -Wl,--nxcompat,--dynamicbase
5251         # Lets work around some stupidity in binutils.
5252         # ld will strip relocations from executables even though we need them
5253         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5254         # however ld then forgets what the entry point should be (oops) so we
5255         # have to manually (re)set it.
5256         if enabled x86_32; then
5257             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5258         elif enabled x86_64; then
5259             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5260             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5261             # Set image base >4GB for extra entropy with HEASLR
5262             add_ldexeflags -Wl,--image-base,0x140000000
5263             append SHFLAGS -Wl,--image-base,0x180000000
5264         fi
5265         ;;
5266     win32|win64)
5267         disable symver
5268         if enabled shared; then
5269             # Link to the import library instead of the normal static library
5270             # for shared libs.
5271             LD_LIB='%.lib'
5272             # Cannot build both shared and static libs with MSVC or icl.
5273             disable static
5274         fi
5275         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5276         shlibdir_default="$bindir_default"
5277         SLIBPREF=""
5278         SLIBSUF=".dll"
5279         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5280         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5281         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5282         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5283         SLIB_INSTALL_LINKS=
5284         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5285         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5286         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5287         enabled x86_64 && objformat="win64" || objformat="win32"
5288         ranlib=:
5289         enable dos_paths
5290         ;;
5291     cygwin*)
5292         target_os=cygwin
5293         shlibdir_default="$bindir_default"
5294         SLIBPREF="cyg"
5295         SLIBSUF=".dll"
5296         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5297         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5298         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5299         SLIB_INSTALL_LINKS=
5300         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5301         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5302         enabled x86_64 && objformat="win64" || objformat="win32"
5303         enable dos_paths
5304         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5305         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5306         ;;
5307     *-dos|freedos|opendos)
5308         network_extralibs="-lsocket"
5309         objformat="coff"
5310         enable dos_paths
5311         ;;
5312     linux)
5313         enable section_data_rel_ro
5314         enabled_any arm aarch64 && enable_weak linux_perf
5315         ;;
5316     irix*)
5317         target_os=irix
5318         ranlib="echo ignoring ranlib"
5319         ;;
5320     os/2*)
5321         strip="lxlite -CS"
5322         striptype=""
5323         objformat="aout"
5324         add_cppflags -D_GNU_SOURCE
5325         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5326         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5327         LIBSUF="_s.a"
5328         SLIBPREF=""
5329         SLIBSUF=".dll"
5330         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5331         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5332         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5333             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5334             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5335             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5336             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5337         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5338             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5339         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5340         SLIB_INSTALL_LINKS=
5341         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5342         enable dos_paths
5343         enable_weak os2threads
5344         ;;
5345     gnu/kfreebsd)
5346         add_cppflags -D_BSD_SOURCE
5347         ;;
5348     gnu)
5349         ;;
5350     qnx)
5351         add_cppflags -D_QNX_SOURCE
5352         network_extralibs="-lsocket"
5353         ;;
5354     symbian)
5355         SLIBSUF=".dll"
5356         enable dos_paths
5357         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5358         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5359         add_ldflags -Wl,--target1-abs,--no-undefined \
5360                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5361                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5362         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5363                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5364                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5365         ;;
5366     minix)
5367         ;;
5368     none)
5369         ;;
5370     *)
5371         die "Unknown OS '$target_os'."
5372         ;;
5373 esac
5374
5375 # test if creating links works
5376 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5377 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5378 mkdir "$link_dest"
5379 $ln_s "$link_dest" "$link_name"
5380 touch "$link_dest/test_file"
5381 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5382     # create link to source path
5383     [ -e src ] && rm src
5384     $ln_s "$source_path" src
5385     source_link=src
5386 else
5387     # creating directory links doesn't work
5388     # fall back to using the full source path
5389     source_link="$source_path"
5390 fi
5391 # cleanup
5392 rm -r "$link_dest"
5393 rm -r "$link_name"
5394
5395 # determine libc flavour
5396
5397 probe_libc(){
5398     pfx=$1
5399     pfx_no_=${pfx%_}
5400     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5401     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5402         eval ${pfx}libc_type=uclibc
5403         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5404     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5405         eval ${pfx}libc_type=glibc
5406         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5407     # MinGW headers can be installed on Cygwin, so check for newlib first.
5408     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5409         eval ${pfx}libc_type=newlib
5410         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5411     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5412     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5413         eval ${pfx}libc_type=mingw64
5414         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5415             add_compat msvcrt/snprintf.o
5416             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5417         fi
5418         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5419         eval test \$${pfx_no_}cc_type = "gcc" &&
5420             add_${pfx}cppflags -D__printf__=__gnu_printf__
5421         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5422             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5423     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5424          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5425         eval ${pfx}libc_type=mingw32
5426         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5427             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5428             die "ERROR: MinGW32 runtime version must be >= 3.15."
5429         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5430         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5431             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5432         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5433             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5434         eval test \$${pfx_no_}cc_type = "gcc" &&
5435             add_${pfx}cppflags -D__printf__=__gnu_printf__
5436     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5437         eval ${pfx}libc_type=msvcrt
5438         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5439             if [ "$pfx" = host_ ]; then
5440                 add_host_cppflags -Dsnprintf=_snprintf
5441             else
5442                 add_compat strtod.o strtod=avpriv_strtod
5443                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5444                                              _snprintf=avpriv_snprintf  \
5445                                              vsnprintf=avpriv_vsnprintf
5446             fi
5447         fi
5448         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5449         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5450         # 0x601 by default unless something else is set by the user.
5451         # This can easily lead to us detecting functions only present
5452         # in such new versions and producing binaries requiring windows 7.0.
5453         # Therefore explicitly set the default to Vista unless the user has
5454         # set something else on the command line.
5455         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5456         # family. For these cases, configure is free to use any functions
5457         # found in the SDK headers by default. (Alternatively, we could force
5458         # _WIN32_WINNT to 0x0602 in that case.)
5459         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5460             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5461 #ifdef WINAPI_FAMILY
5462 #include <winapifamily.h>
5463 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5464 #error not desktop
5465 #endif
5466 #endif
5467 EOF
5468         if [ "$pfx" = "" ]; then
5469             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5470             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5471         fi
5472     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5473         eval ${pfx}libc_type=klibc
5474     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5475         eval ${pfx}libc_type=bionic
5476     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5477         eval ${pfx}libc_type=solaris
5478         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5479     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5480         eval ${pfx}libc_type=djgpp
5481         add_cppflags -U__STRICT_ANSI__
5482         add_cflags "-include $source_path/compat/djgpp/math.h"
5483         add_compat djgpp/math.o
5484     fi
5485     test_${pfx}cc <<EOF
5486 #include <time.h>
5487 void *v = localtime_r;
5488 EOF
5489 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5490 #include <time.h>
5491 void *v = localtime_r;
5492 EOF
5493
5494     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5495 }
5496
5497 probe_libc
5498 probe_libc host_
5499
5500 # hacks for compiler/libc/os combinations
5501
5502 case $libc_type in
5503     bionic)
5504         add_compat strtod.o strtod=avpriv_strtod
5505         ;;
5506 esac
5507
5508 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5509     add_cppflags '-I\$(SRC_PATH)/compat/float'
5510
5511 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5512
5513 set_default libdir
5514 : ${shlibdir_default:="$libdir"}
5515 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5516
5517 set_default $PATHS_LIST
5518 set_default nm
5519
5520 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5521
5522 enable_weak_pic() {
5523     disabled pic && return
5524     enable pic
5525     add_cppflags -DPIC
5526     case "$target_os" in
5527     mingw*|cygwin*|win*)
5528         ;;
5529     *)
5530         add_cflags -fPIC
5531         add_asflags -fPIC
5532         ;;
5533     esac
5534 }
5535
5536 enabled pic && enable_weak_pic
5537
5538 test_cc <<EOF || die "Symbol mangling check failed."
5539 int ff_extern;
5540 EOF
5541 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5542 extern_prefix=${sym%%ff_extern*}
5543
5544 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5545
5546 for restrict_keyword in restrict __restrict__ __restrict ""; do
5547     test_code cc "" "char * $restrict_keyword p" && break
5548 done
5549
5550 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5551
5552 # The global variable ensures the bits appear unchanged in the object file.
5553 test_cc <<EOF || die "endian test failed"
5554 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5555 EOF
5556 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5557
5558 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5559
5560 if ! enabled ppc64 || enabled bigendian; then
5561     disable vsx
5562 fi
5563
5564 check_gas() {
5565     log "check_gas using '$as' as AS"
5566     # :vararg is used on aarch64, arm and ppc altivec
5567     check_as vararg "
5568 .macro m n, y:vararg=0
5569 \n: .int \y
5570 .endm
5571 m x" || return 1
5572     # .altmacro is only used in arm asm
5573     ! enabled arm || check_as gnu_as ".altmacro"
5574 }
5575
5576 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5577     nogas=:
5578     enabled_any arm aarch64 && nogas=die
5579     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5580     as_noop=-v
5581
5582     case $as_type in
5583         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5584         gcc)  gaspp_as_type=gas ;;
5585         *)    gaspp_as_type=$as_type ;;
5586     esac
5587
5588     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5589
5590     test "${as#*gas-preprocessor.pl}" != "$as" ||
5591     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5592         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5593
5594     if ! check_gas ; then
5595         as=${gas:=$as}
5596         check_gas || \
5597             $nogas "GNU assembler not found, install/update gas-preprocessor"
5598     fi
5599
5600     check_as as_func ".func test
5601                       .endfunc"
5602 fi
5603
5604 check_inline_asm inline_asm_labels '"1:\n"'
5605
5606 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5607
5608 if enabled aarch64; then
5609     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5610     # internal assembler in clang 3.3 does not support this instruction
5611     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5612     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5613
5614     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5615
5616 elif enabled alpha; then
5617
5618     check_cflags -mieee
5619
5620 elif enabled arm; then
5621
5622     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5623     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5624 float func(float a, float b){ return a+b; }
5625 EOF
5626     enabled thumb && check_cflags -mthumb || check_cflags -marm
5627
5628     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5629         :
5630     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5631         :
5632     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5633         case "${cross_prefix:-$cc}" in
5634             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5635             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5636 __asm__ (".eabi_attribute 28, 1");
5637 int main(void) { return 0; }
5638 EOF
5639         esac
5640         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5641     fi
5642
5643     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5644     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5645     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5646     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5647     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5648     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5649     enabled setend  && check_insn setend  'setend be'
5650
5651     [ $target_os = linux ] || [ $target_os = android ] ||
5652         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5653             $ARCH_EXT_LIST_ARM
5654
5655     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5656
5657     check_as as_arch_directive ".arch armv7-a"
5658     check_as as_dn_directive   "ra .dn d0.i16"
5659     check_as as_fpu_directive  ".fpu neon"
5660
5661     # llvm's integrated assembler supports .object_arch from llvm 3.5
5662     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5663         check_as as_object_arch ".object_arch armv4"
5664
5665     # MS armasm fails to assemble our PIC constructs
5666     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5667
5668 elif enabled mips; then
5669
5670     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5671     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5672     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5673
5674     # Enable minimum ISA based on selected options
5675     if enabled mips64; then
5676         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5677         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5678         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5679     else
5680         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5681         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5682         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5683         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5684     fi
5685
5686     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5687     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5688     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5689     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5690     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5691
5692     if enabled bigendian && enabled msa; then
5693         disable msa
5694     fi
5695
5696 elif enabled parisc; then
5697
5698     if enabled gcc; then
5699         case $($cc -dumpversion) in
5700             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5701         esac
5702     fi
5703
5704 elif enabled ppc; then
5705
5706     enable local_aligned
5707
5708     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5709     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5710     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5711     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5712
5713     if enabled altivec; then
5714         check_cflags -maltivec -mabi=altivec
5715
5716         # check if our compiler supports Motorola AltiVec C API
5717         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5718                                     vector signed int v2 = (vector signed int) { 1 };
5719                                     v1 = vec_add(v1, v2);"
5720
5721         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5722     fi
5723
5724     if enabled vsx; then
5725         check_cflags -mvsx &&
5726         check_cc vsx altivec.h "int v[4] = { 0 };
5727                                 vector signed int v1 = vec_vsx_ld(0, v);"
5728     fi
5729
5730     if enabled power8; then
5731         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5732     fi
5733
5734 elif enabled x86; then
5735
5736     check_builtin rdtsc    intrin.h   "__rdtsc()"
5737     check_builtin mm_empty mmintrin.h "_mm_empty()"
5738
5739     enable local_aligned
5740
5741     # check whether EBP is available on x86
5742     # As 'i' is stored on the stack, this program will crash
5743     # if the base pointer is used to access it because the
5744     # base pointer is cleared in the inline assembly code.
5745     check_exec_crash <<EOF && enable ebp_available
5746 volatile int i=0;
5747 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5748 return i;
5749 EOF
5750
5751     # check whether EBX is available on x86
5752     check_inline_asm ebx_available '""::"b"(0)' &&
5753         check_inline_asm ebx_available '"":::"%ebx"'
5754
5755     # check whether xmm clobbers are supported
5756     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5757
5758     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5759         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5760
5761     # check whether binutils is new enough to compile SSSE3/MMXEXT
5762     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5763     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5764
5765     probe_x86asm(){
5766         x86asmexe_probe=$1
5767         if test_cmd $x86asmexe_probe -v; then
5768             x86asmexe=$x86asmexe_probe
5769             x86asm_type=nasm
5770             x86asm_debug="-g -F dwarf"
5771             X86ASMDEP=
5772             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5773         elif test_cmd $x86asmexe_probe --version; then
5774             x86asmexe=$x86asmexe_probe
5775             x86asm_type=yasm
5776             x86asm_debug="-g dwarf2"
5777             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5778             X86ASM_DEPFLAGS=
5779         fi
5780         check_x86asm x86asm "movbe ecx, [5]"
5781     }
5782
5783     if ! disabled_any asm mmx x86asm; then
5784         disable x86asm
5785         for program in $x86asmexe nasm yasm; do
5786             probe_x86asm $program && break
5787         done
5788         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5789         X86ASMFLAGS="-f $objformat"
5790         enabled pic               && append X86ASMFLAGS "-DPIC"
5791         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5792         case "$objformat" in
5793             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5794         esac
5795
5796         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5797         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5798         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5799         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5800         check_x86asm cpunop          "CPU amdnop"
5801     fi
5802
5803     case "$cpu" in
5804         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5805             disable fast_clz
5806         ;;
5807     esac
5808
5809 fi
5810
5811 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5812
5813 check_ldflags -Wl,--as-needed
5814 check_ldflags -Wl,-z,noexecstack
5815
5816 if ! disabled network; then
5817     check_func getaddrinfo $network_extralibs
5818     check_func inet_aton $network_extralibs
5819
5820     check_type netdb.h "struct addrinfo"
5821     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5822     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5823     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5824     check_type poll.h "struct pollfd"
5825     check_type netinet/sctp.h "struct sctp_event_subscribe"
5826     check_struct "sys/socket.h" "struct msghdr" msg_flags
5827     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5828     check_type netinet/in.h "struct sockaddr_in6"
5829     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5830     check_type "sys/types.h sys/socket.h" socklen_t
5831
5832     # Prefer arpa/inet.h over winsock2
5833     if check_headers arpa/inet.h ; then
5834         check_func closesocket
5835     elif check_headers winsock2.h ; then
5836         check_func_headers winsock2.h closesocket -lws2 &&
5837             network_extralibs="-lws2" ||
5838         { check_func_headers winsock2.h closesocket -lws2_32 &&
5839             network_extralibs="-lws2_32"; } || disable winsock2_h network
5840         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5841
5842         check_type ws2tcpip.h socklen_t
5843         check_type ws2tcpip.h "struct addrinfo"
5844         check_type ws2tcpip.h "struct group_source_req"
5845         check_type ws2tcpip.h "struct ip_mreq_source"
5846         check_type ws2tcpip.h "struct ipv6_mreq"
5847         check_type winsock2.h "struct pollfd"
5848         check_struct winsock2.h "struct sockaddr" sa_len
5849         check_type ws2tcpip.h "struct sockaddr_in6"
5850         check_type ws2tcpip.h "struct sockaddr_storage"
5851     else
5852         disable network
5853     fi
5854 fi
5855
5856 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5857 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5858 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5859 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5860 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5861 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5862 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5863
5864 case "$custom_allocator" in
5865     jemalloc)
5866         # jemalloc by default does not use a prefix
5867         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5868     ;;
5869     tcmalloc)
5870         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5871         malloc_prefix=tc_
5872     ;;
5873 esac
5874
5875 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5876 check_func  ${malloc_prefix}memalign            && enable memalign
5877 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5878
5879 check_func  access
5880 check_func_headers stdlib.h arc4random
5881 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5882 check_func  fcntl
5883 check_func  fork
5884 check_func  gethrtime
5885 check_func  getopt
5886 check_func  getrusage
5887 check_func  gettimeofday
5888 check_func  isatty
5889 check_func  mkstemp
5890 check_func  mmap
5891 check_func  mprotect
5892 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5893 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5894 check_func  sched_getaffinity
5895 check_func  setrlimit
5896 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5897 check_func  strerror_r
5898 check_func  sysconf
5899 check_func  sysctl
5900 check_func  usleep
5901
5902 check_func_headers conio.h kbhit
5903 check_func_headers io.h setmode
5904 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5905 check_func_headers mach/mach_time.h mach_absolute_time
5906 check_func_headers stdlib.h getenv
5907 check_func_headers sys/stat.h lstat
5908
5909 check_func_headers windows.h GetProcessAffinityMask
5910 check_func_headers windows.h GetProcessTimes
5911 check_func_headers windows.h GetSystemTimeAsFileTime
5912 check_func_headers windows.h LoadLibrary
5913 check_func_headers windows.h MapViewOfFile
5914 check_func_headers windows.h PeekNamedPipe
5915 check_func_headers windows.h SetConsoleTextAttribute
5916 check_func_headers windows.h SetConsoleCtrlHandler
5917 check_func_headers windows.h Sleep
5918 check_func_headers windows.h VirtualAlloc
5919 check_func_headers glob.h glob
5920 enabled xlib &&
5921     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5922
5923 check_headers direct.h
5924 check_headers dirent.h
5925 check_headers dxgidebug.h
5926 check_headers dxva.h
5927 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5928 check_headers io.h
5929 check_headers linux/perf_event.h
5930 check_headers libcrystalhd/libcrystalhd_if.h
5931 check_headers malloc.h
5932 check_headers net/udplite.h
5933 check_headers poll.h
5934 check_headers sys/param.h
5935 check_headers sys/resource.h
5936 check_headers sys/select.h
5937 check_headers sys/time.h
5938 check_headers sys/un.h
5939 check_headers termios.h
5940 check_headers unistd.h
5941 check_headers valgrind/valgrind.h
5942 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5943 check_headers windows.h
5944 check_headers X11/extensions/XvMClib.h
5945 check_headers asm/types.h
5946
5947 # it seems there are versions of clang in some distros that try to use the
5948 # gcc headers, which explodes for stdatomic
5949 # so we also check that atomics actually work here
5950 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5951
5952 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5953 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5954     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5955 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5956 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5957 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5958
5959 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5960 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5961 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5962
5963 enabled appkit       && check_apple_framework AppKit
5964 enabled audiotoolbox && check_apple_framework AudioToolbox
5965 enabled avfoundation && check_apple_framework AVFoundation
5966 enabled coreimage    && check_apple_framework CoreImage
5967 enabled videotoolbox && check_apple_framework VideoToolbox
5968
5969 check_apple_framework CoreFoundation
5970 check_apple_framework CoreMedia
5971 check_apple_framework CoreVideo
5972
5973 enabled avfoundation && {
5974     disable coregraphics applicationservices
5975     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5976     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5977
5978 enabled videotoolbox && {
5979     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5980     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5981 }
5982
5983 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5984
5985 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5986 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5987 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5988 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5989 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5990
5991 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5992 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5993 check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
5994 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5995 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5996 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5997 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5998
5999 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6000
6001 if ! disabled ffnvcodec; then
6002     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
6003           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
6004       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
6005           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
6006 fi
6007
6008 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6009
6010 if ! disabled w32threads && ! enabled pthreads; then
6011     check_func_headers "windows.h process.h" _beginthreadex &&
6012         check_type "windows.h" CONDITION_VARIABLE &&
6013         check_type "windows.h" INIT_ONCE &&
6014         enable w32threads || disable w32threads
6015     if ! enabled w32threads && enabled winrt; then
6016         check_func_headers "windows.h" CreateThread &&
6017             enable w32threads || disable w32threads
6018     fi
6019 fi
6020
6021 # check for some common methods of building with pthread support
6022 # do this before the optional library checks as some of them require pthreads
6023 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6024     if check_lib pthreads pthread.h pthread_join   -pthread &&
6025        check_lib pthreads pthread.h pthread_create -pthread; then
6026         add_cflags -pthread
6027     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6028          check_lib pthreads pthread.h pthread_create -pthreads; then
6029         add_cflags -pthreads
6030     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6031          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6032         add_cflags -ldl -pthread
6033     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6034          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6035         :
6036     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6037          check_lib pthreads pthread.h pthread_create -lpthread; then
6038         :
6039     elif check_func pthread_join && check_func pthread_create; then
6040         enable pthreads
6041     fi
6042     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6043
6044     if enabled pthreads; then
6045         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6046         check_func pthread_cancel $pthreads_extralibs
6047     fi
6048 fi
6049
6050 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6051                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6052 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6053 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6054
6055 # On some systems dynamic loading requires no extra linker flags
6056 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6057
6058 check_lib libm math.h sin -lm
6059
6060 atan2f_args=2
6061 copysign_args=2
6062 hypot_args=2
6063 ldexpf_args=2
6064 powf_args=2
6065
6066 for func in $MATH_FUNCS; do
6067     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6068 done
6069
6070 for func in $COMPLEX_FUNCS; do
6071     eval check_complexfunc $func \${${func}_args:-1}
6072 done
6073
6074 # these are off by default, so fail if requested and not available
6075 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6076 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6077 enabled decklink          && { require_headers DeckLinkAPI.h &&
6078                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6079 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6080 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6081 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6082 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6083 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6084 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6085 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6086 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6087                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6088                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6089 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6090 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6091 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6092 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6093 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6094 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6095                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6096                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6097 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6098 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6099 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.1.0" "dav1d/dav1d.h" dav1d_version
6100 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6101 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6102 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6103 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6104                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6105                                  warn "using libfdk without pkg-config"; } }
6106 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"
6107 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6108 enabled fontconfig        && enable libfontconfig
6109 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6110 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6111 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6112 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6113                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6114 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6115                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6116                                done || die "ERROR: libgsm not found"; }
6117 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6118 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6119 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6120 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6121 # While it may appear that require is being used as a pkg-config
6122 # fallback for libmfx, it is actually being used to detect a different
6123 # installation route altogether.  If libmfx is installed via the Intel
6124 # Media SDK or Intel Media Server Studio, these don't come with
6125 # pkg-config support.  Instead, users should make sure that the build
6126 # can find the libraries and headers through other means.
6127 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6128                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6129 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6130 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6131 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6132                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6133 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6134                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6135                                die "ERROR: libnpp not found"; }
6136 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6137 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6138 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6139                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6140                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6141                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6142 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6143 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6144                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6145 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6146 enabled libopus           && {
6147     enabled libopus_decoder && {
6148         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6149     }
6150     enabled libopus_encoder && {
6151         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6152     }
6153 }
6154 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6155 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6156 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6157 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6158 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6159 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6160                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6161 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6162 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6163 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6164 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6165 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6166 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6167 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6168 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6169 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6170 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6171                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6172                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6173 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6174 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6175 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6176 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6177 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6178                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6179
6180 enabled libvpx            && {
6181     enabled libvpx_vp8_decoder && {
6182         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6183             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6184                 die "ERROR: libvpx decoder version must be >=1.4.0";
6185     }
6186     enabled libvpx_vp8_encoder && {
6187         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6188             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6189                 die "ERROR: libvpx encoder version must be >=1.4.0";
6190     }
6191     enabled libvpx_vp9_decoder && {
6192         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6193             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6194     }
6195     enabled libvpx_vp9_encoder && {
6196         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6197             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6198     }
6199     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6200         die "libvpx enabled but no supported decoders found"
6201     fi
6202 }
6203
6204 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6205 enabled libwebp           && {
6206     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6207     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6208 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6209                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6210                                  warn "using libx264 without pkg-config"; } } &&
6211                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6212                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6213 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6214                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6215 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6216 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6217 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6218 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6219 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6220 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6221                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6222                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6223 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6224 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6225                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6226                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6227                                die "ERROR: mbedTLS not found"; }
6228 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6229 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6230                                { ! enabled cross_compile &&
6231                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6232                                  add_ldflags -L/opt/vc/lib/ &&
6233                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6234                                die "ERROR: mmal not found" &&
6235                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6236 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6237                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6238                                die "ERROR: openal not found"; } &&
6239                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6240                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6241 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6242                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6243                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6244                                die "ERROR: opencl not found"; } &&
6245                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6246                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6247                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6248 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6249                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6250                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6251                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6252                                die "ERROR: opengl not found."
6253                              }
6254 enabled omx               && require_headers OMX_Core.h
6255 enabled omx_rpi           && { check_headers OMX_Core.h ||
6256                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6257                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6258 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6259                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6260                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6261                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6262                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6263                                die "ERROR: openssl not found"; }
6264 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6265                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6266                                { enabled libdrm ||
6267                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6268                              }
6269 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6270
6271
6272 if enabled gcrypt; then
6273     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6274     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6275         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6276         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6277         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6278             die "ERROR: gcrypt not found"
6279         add_cflags $gcrypt_cflags
6280     else
6281         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6282     fi
6283 fi
6284
6285 if enabled sdl2; then
6286     SDL2_CONFIG="${cross_prefix}sdl2-config"
6287     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6288     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6289         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6290         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6291         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6292         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6293         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6294             enable sdl2
6295     fi
6296     if test $target_os = "mingw32"; then
6297         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6298     fi
6299 fi
6300
6301 if enabled decklink; then
6302     case $target_os in
6303         mingw32*|mingw64*|win32|win64)
6304             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6305             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6306             ;;
6307     esac
6308 fi
6309
6310 enabled securetransport &&
6311     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6312     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6313         disable securetransport
6314
6315 enabled securetransport &&
6316     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6317
6318 enabled schannel &&
6319     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6320     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6321     schannel_extralibs="-lsecur32" ||
6322         disable schannel
6323
6324 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6325 enabled makeinfo \
6326     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6327     && enable makeinfo_html || disable makeinfo_html
6328 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6329 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6330 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6331 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6332
6333 # check V4L2 codecs available in the API
6334 check_headers linux/fb.h
6335 check_headers linux/videodev2.h
6336 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6337 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6338 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6339 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6340 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6341 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6342 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6343 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6344 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6345 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6346 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6347
6348 check_headers sys/videoio.h
6349 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6350
6351 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6352 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6353 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6354 # w32api 3.12 had it defined wrong
6355 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6356
6357 check_type "dshow.h" IBaseFilter
6358
6359 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6360 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6361     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6362     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6363     check_headers "dev/ic/bt8xx.h"
6364
6365 if check_struct sys/soundcard.h audio_buf_info bytes; then
6366     enable_sanitized sys/soundcard.h
6367 else
6368     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6369     #include <sys/soundcard.h>
6370     audio_buf_info abc;
6371 EOF
6372 fi
6373
6374 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6375     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6376
6377 enabled libjack &&
6378     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6379
6380 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6381
6382 if enabled libcdio; then
6383     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6384     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6385     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6386     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6387     die "ERROR: No usable libcdio/cdparanoia found"
6388 fi
6389
6390 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6391     disable libxcb_shm libxcb_shape libxcb_xfixes
6392
6393 if enabled libxcb; then
6394     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6395     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6396     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6397 fi
6398
6399 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6400
6401 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6402 # the desktop api partition
6403 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6404 #ifdef WINAPI_FAMILY
6405 #include <winapifamily.h>
6406 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6407 #error desktop, not uwp
6408 #else
6409 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6410 #endif
6411 #else
6412 #error no family set
6413 #endif
6414 EOF
6415
6416 enabled vaapi &&
6417     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6418
6419 if enabled vaapi; then
6420     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6421
6422     if enabled xlib; then
6423         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6424     fi
6425
6426     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6427 fi
6428
6429 if enabled_all opencl libdrm ; then
6430     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6431         enable opencl_drm_beignet
6432     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6433         enable opencl_drm_arm
6434 fi
6435
6436 if enabled_all opencl vaapi ; then
6437     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6438     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6439         enable opencl_vaapi_intel_media
6440 fi
6441
6442 if enabled_all opencl dxva2 ; then
6443     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6444         enable opencl_dxva2
6445 fi
6446
6447 if enabled_all opencl d3d11va ; then
6448     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6449         enable opencl_d3d11
6450 fi
6451
6452 enabled vdpau &&
6453     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6454
6455 enabled vdpau &&
6456     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6457
6458 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6459
6460 if enabled x86; then
6461     case $target_os in
6462         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6463             ;;
6464         *)
6465             disable ffnvcodec cuvid nvdec nvenc
6466             ;;
6467     esac
6468 else
6469     disable ffnvcodec cuvid nvdec nvenc
6470 fi
6471
6472 enabled ffnvcodec && enable cuda
6473
6474 enabled nvenc &&
6475     test_cc -I$source_path <<EOF || disable nvenc
6476 #include <ffnvcodec/nvEncodeAPI.h>
6477 NV_ENCODE_API_FUNCTION_LIST flist;
6478 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6479 int main(void) { return 0; }
6480 EOF
6481
6482 enabled amf &&
6483     check_cpp_condition amf "AMF/core/Version.h" \
6484         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6485
6486 # Funny iconv installations are not unusual, so check it after all flags have been set
6487 if enabled libc_iconv; then
6488     check_func_headers iconv.h iconv
6489 elif enabled iconv; then
6490     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6491 fi
6492
6493 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6494
6495 # add some useful compiler flags if supported
6496 check_cflags -Wdeclaration-after-statement
6497 check_cflags -Wall
6498 check_cflags -Wdisabled-optimization
6499 check_cflags -Wpointer-arith
6500 check_cflags -Wredundant-decls
6501 check_cflags -Wwrite-strings
6502 check_cflags -Wtype-limits
6503 check_cflags -Wundef
6504 check_cflags -Wmissing-prototypes
6505 check_cflags -Wno-pointer-to-int-cast
6506 check_cflags -Wstrict-prototypes
6507 check_cflags -Wempty-body
6508
6509 if enabled extra_warnings; then
6510     check_cflags -Wcast-qual
6511     check_cflags -Wextra
6512     check_cflags -Wpedantic
6513 fi
6514
6515 check_disable_warning(){
6516     warning_flag=-W${1#-Wno-}
6517     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6518 }
6519
6520 test_cflags -Werror=unused-command-line-argument &&
6521     append unknown_warning_flags "-Werror=unused-command-line-argument"
6522 test_cflags -Werror=unknown-warning-option &&
6523     append unknown_warning_flags "-Werror=unknown-warning-option"
6524
6525 check_disable_warning -Wno-parentheses
6526 check_disable_warning -Wno-switch
6527 check_disable_warning -Wno-format-zero-length
6528 check_disable_warning -Wno-pointer-sign
6529 check_disable_warning -Wno-unused-const-variable
6530 check_disable_warning -Wno-bool-operation
6531 check_disable_warning -Wno-char-subscripts
6532
6533 check_disable_warning_headers(){
6534     warning_flag=-W${1#-Wno-}
6535     test_cflags $warning_flag && add_cflags_headers $1
6536 }
6537
6538 check_disable_warning_headers -Wno-deprecated-declarations
6539 check_disable_warning_headers -Wno-unused-variable
6540
6541 test_cc <<EOF && enable blocks_extension
6542 void (^block)(void);
6543 EOF
6544
6545 # add some linker flags
6546 check_ldflags -Wl,--warn-common
6547 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6548 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6549 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6550
6551 # add some strip flags
6552 check_stripflags -x
6553
6554 enabled neon_clobber_test &&
6555     check_ldflags -Wl,--wrap,avcodec_open2              \
6556                   -Wl,--wrap,avcodec_decode_audio4      \
6557                   -Wl,--wrap,avcodec_decode_video2      \
6558                   -Wl,--wrap,avcodec_decode_subtitle2   \
6559                   -Wl,--wrap,avcodec_encode_audio2      \
6560                   -Wl,--wrap,avcodec_encode_video2      \
6561                   -Wl,--wrap,avcodec_encode_subtitle    \
6562                   -Wl,--wrap,avcodec_send_packet        \
6563                   -Wl,--wrap,avcodec_receive_packet     \
6564                   -Wl,--wrap,avcodec_send_frame         \
6565                   -Wl,--wrap,avcodec_receive_frame      \
6566                   -Wl,--wrap,swr_convert                \
6567                   -Wl,--wrap,avresample_convert ||
6568     disable neon_clobber_test
6569
6570 enabled xmm_clobber_test &&
6571     check_ldflags -Wl,--wrap,avcodec_open2              \
6572                   -Wl,--wrap,avcodec_decode_audio4      \
6573                   -Wl,--wrap,avcodec_decode_video2      \
6574                   -Wl,--wrap,avcodec_decode_subtitle2   \
6575                   -Wl,--wrap,avcodec_encode_audio2      \
6576                   -Wl,--wrap,avcodec_encode_video2      \
6577                   -Wl,--wrap,avcodec_encode_subtitle    \
6578                   -Wl,--wrap,avcodec_send_packet        \
6579                   -Wl,--wrap,avcodec_receive_packet     \
6580                   -Wl,--wrap,avcodec_send_frame         \
6581                   -Wl,--wrap,avcodec_receive_frame      \
6582                   -Wl,--wrap,swr_convert                \
6583                   -Wl,--wrap,avresample_convert         \
6584                   -Wl,--wrap,sws_scale ||
6585     disable xmm_clobber_test
6586
6587 check_ld "cc" proper_dce <<EOF
6588 extern const int array[512];
6589 static inline int func(void) { return array[0]; }
6590 int main(void) { return 0; }
6591 EOF
6592
6593 if enabled proper_dce; then
6594     echo "X { local: *; };" > $TMPV
6595     if test_ldflags -Wl,${version_script},$TMPV; then
6596         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6597         quotes='""'
6598         test_cc <<EOF && enable symver_asm_label
6599 void ff_foo(void) __asm__ ("av_foo@VERSION");
6600 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6601 EOF
6602         test_cc <<EOF && enable symver_gnu_asm
6603 __asm__(".symver ff_foo,av_foo@VERSION");
6604 void ff_foo(void) {}
6605 EOF
6606     fi
6607 fi
6608
6609 if [ -z "$optflags" ]; then
6610     if enabled small; then
6611         optflags=$cflags_size
6612     elif enabled optimizations; then
6613         optflags=$cflags_speed
6614     else
6615         optflags=$cflags_noopt
6616     fi
6617 fi
6618
6619 if [ -z "$nvccflags" ]; then
6620     nvccflags=$nvccflags_default
6621 fi
6622
6623 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6624     nvccflags="$nvccflags -m64"
6625 else
6626     nvccflags="$nvccflags -m32"
6627 fi
6628
6629 check_optflags(){
6630     check_cflags "$@"
6631     enabled lto && check_ldflags "$@"
6632 }
6633
6634 check_optflags $optflags
6635 check_optflags -fno-math-errno
6636 check_optflags -fno-signed-zeros
6637
6638 if enabled lto; then
6639     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6640     check_cflags  -flto
6641     check_ldflags -flto $cpuflags
6642     disable inline_asm_direct_symbol_refs
6643 fi
6644
6645 enabled ftrapv && check_cflags -ftrapv
6646
6647 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6648 int x;
6649 EOF
6650
6651
6652 if enabled icc; then
6653     # Just warnings, no remarks
6654     check_cflags -w1
6655     # -wd: Disable following warnings
6656     # 144, 167, 556: -Wno-pointer-sign
6657     # 188: enumerated type mixed with another type
6658     # 1292: attribute "foo" ignored
6659     # 1419: external declaration in primary source file
6660     # 10006: ignoring unknown option -fno-signed-zeros
6661     # 10148: ignoring unknown option -Wno-parentheses
6662     # 10156: ignoring option '-W'; no argument required
6663     # 13200: No EMMS instruction before call to function
6664     # 13203: No EMMS instruction before return from function
6665     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6666     # 11030: Warning unknown option --as-needed
6667     # 10156: ignoring option '-export'; no argument required
6668     check_ldflags -wd10156,11030
6669     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6670     enable ebp_available
6671     # The test above does not test linking
6672     enabled lto && disable symver_asm_label
6673     if enabled x86_32; then
6674         icc_version=$($cc -dumpversion)
6675         test ${icc_version%%.*} -ge 11 &&
6676             check_cflags -falign-stack=maintain-16-byte ||
6677             disable aligned_stack
6678     fi
6679 elif enabled gcc; then
6680     check_optflags -fno-tree-vectorize
6681     check_cflags -Werror=format-security
6682     check_cflags -Werror=implicit-function-declaration
6683     check_cflags -Werror=missing-prototypes
6684     check_cflags -Werror=return-type
6685     check_cflags -Werror=vla
6686     check_cflags -Wformat
6687     check_cflags -fdiagnostics-color=auto
6688     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6689     if enabled x86_32; then
6690         case $target_os in
6691         *bsd*)
6692             # BSDs don't guarantee a 16 byte aligned stack, but we can
6693             # request GCC to try to maintain 16 byte alignment throughout
6694             # function calls. Library entry points that might call assembly
6695             # functions align the stack. (The parameter means 2^4 bytes.)
6696             check_cflags -mpreferred-stack-boundary=4
6697             ;;
6698         esac
6699     fi
6700 elif enabled llvm_gcc; then
6701     check_cflags -mllvm -stack-alignment=16
6702 elif enabled clang; then
6703     if enabled x86_32; then
6704         # Clang doesn't support maintaining alignment without assuming the
6705         # same alignment in every function. If 16 byte alignment would be
6706         # enabled, one would also have to either add attribute_align_arg on
6707         # every single entry point into the libraries or enable -mstackrealign
6708         # (doing stack realignment in every single function).
6709         case $target_os in
6710         mingw32|win32|*bsd*)
6711             disable aligned_stack
6712             ;;
6713         *)
6714             check_cflags -mllvm -stack-alignment=16
6715             check_cflags -mstack-alignment=16
6716             ;;
6717         esac
6718     else
6719         check_cflags -mllvm -stack-alignment=16
6720         check_cflags -mstack-alignment=16
6721     fi
6722     check_cflags -Qunused-arguments
6723     check_cflags -Werror=implicit-function-declaration
6724     check_cflags -Werror=missing-prototypes
6725     check_cflags -Werror=return-type
6726 elif enabled cparser; then
6727     add_cflags -Wno-missing-variable-declarations
6728     add_cflags -Wno-empty-statement
6729 elif enabled armcc; then
6730     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6731     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6732     # 2523: use of inline assembly is deprecated
6733     add_cflags -W${armcc_opt},--diag_suppress=2523
6734     add_cflags -W${armcc_opt},--diag_suppress=1207
6735     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6736     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6737     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6738     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6739 elif enabled pathscale; then
6740     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6741     disable inline_asm
6742 elif enabled_any msvc icl; then
6743     enabled x86_32 && disable aligned_stack
6744     enabled_all x86_32 debug && add_cflags -Oy-
6745     enabled debug && add_ldflags -debug
6746     enable pragma_deprecated
6747     if enabled icl; then
6748         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6749         # (correctly) on icl 13.x.
6750         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6751             add_cflags -Qansi-alias
6752         # Some inline asm is not compilable in debug
6753         if enabled debug; then
6754             disable ebp_available
6755             disable ebx_available
6756         fi
6757     fi
6758     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6759     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6760     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6761     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6762     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6763     # MSVC 2013 and newer can handle it fine.
6764     # If this declspec fails, force including stdlib.h before the restrict redefinition
6765     # happens in config.h.
6766     if [ $restrict_keyword != restrict ]; then
6767         test_cc <<EOF || add_cflags -FIstdlib.h
6768 __declspec($restrict_keyword) void *foo(int);
6769 EOF
6770     fi
6771     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6772     # Issue has been fixed in MSVC v19.00.24218.
6773     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6774         check_cflags -d2SSAOptimizer-
6775     # enable utf-8 source processing on VS2015 U2 and newer
6776     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6777         add_cflags -utf-8
6778 fi
6779
6780 for pfx in "" host_; do
6781     varname=${pfx%_}cc_type
6782     eval "type=\$$varname"
6783     if [ "$type" = "msvc" ]; then
6784         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6785 static inline int foo(int a) { return a; }
6786 EOF
6787     fi
6788 done
6789
6790 case $as_type in
6791     clang)
6792         add_asflags -Qunused-arguments
6793     ;;
6794 esac
6795
6796 case $ld_type in
6797     clang)
6798         check_ldflags -Qunused-arguments
6799     ;;
6800 esac
6801
6802 enable frame_thread_encoder
6803
6804 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6805
6806 check_deps $CONFIG_LIST       \
6807            $CONFIG_EXTRA      \
6808            $HAVE_LIST         \
6809            $ALL_COMPONENTS    \
6810
6811 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"
6812 enabled avresample && warn "Building with deprecated library libavresample"
6813
6814 case $target_os in
6815 haiku)
6816     disable memalign
6817     disable posix_memalign
6818     ;;
6819 *-dos|freedos|opendos)
6820     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6821         disable memalign
6822     fi
6823     ;;
6824 esac
6825
6826 flatten_extralibs(){
6827     nested_entries=
6828     list_name=$1
6829     eval list=\$${1}
6830     for entry in $list; do
6831         entry_copy=$entry
6832         resolve entry_copy
6833         flat_entries=
6834         for e in $entry_copy; do
6835             case $e in
6836                 *_extralibs) nested_entries="$nested_entries$e ";;
6837                           *) flat_entries="$flat_entries$e ";;
6838             esac
6839         done
6840         eval $entry="\$flat_entries"
6841     done
6842     append $list_name "$nested_entries"
6843
6844     resolve nested_entries
6845     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6846         flatten_extralibs $list_name
6847     fi
6848 }
6849
6850 flatten_extralibs_wrapper(){
6851     list_name=$1
6852     flatten_extralibs $list_name
6853     unique $list_name
6854     resolve $list_name
6855     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6856     eval printf \''%s'\' \""\$$list_name"\"
6857 }
6858
6859 for linkunit in $LIBRARY_LIST; do
6860     unset current_extralibs
6861     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6862     for comp in ${components}; do
6863         enabled $comp || continue
6864         comp_extralibs="${comp}_extralibs"
6865         append current_extralibs $comp_extralibs
6866     done
6867     eval prepend ${linkunit}_extralibs $current_extralibs
6868 done
6869
6870 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6871     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6872 done
6873
6874 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6875
6876 for thread in $THREADS_LIST; do
6877     if enabled $thread; then
6878         test -n "$thread_type" &&
6879             die "ERROR: Only one thread type must be selected." ||
6880             thread_type="$thread"
6881     fi
6882 done
6883
6884 if disabled stdatomic; then
6885     if enabled atomics_gcc; then
6886         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6887     elif enabled atomics_win32; then
6888         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6889     elif enabled atomics_suncc; then
6890         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6891     elif enabled pthreads; then
6892         add_compat atomics/pthread/stdatomic.o
6893         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6894     else
6895         enabled threads && die "Threading is enabled, but no atomics are available"
6896         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6897     fi
6898 fi
6899
6900 # Check if requested libraries were found.
6901 for lib in $AUTODETECT_LIBS; do
6902     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6903 done
6904
6905 enabled zlib && add_cppflags -DZLIB_CONST
6906
6907 # conditional library dependencies, in any order
6908 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6909 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6910 enabled afir_filter         && prepend avfilter_deps "avcodec"
6911 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6912 enabled aresample_filter    && prepend avfilter_deps "swresample"
6913 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6914 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6915 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6916 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6917 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6918 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6919 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6920 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6921 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6922 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6923 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6924 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6925 enabled pan_filter          && prepend avfilter_deps "swresample"
6926 enabled pp_filter           && prepend avfilter_deps "postproc"
6927 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6928 enabled resample_filter && prepend avfilter_deps "avresample"
6929 enabled sab_filter          && prepend avfilter_deps "swscale"
6930 enabled scale_filter    && prepend avfilter_deps "swscale"
6931 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6932 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6933 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6934 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6935 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6936 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6937 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6938 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6939 enabled spp_filter          && prepend avfilter_deps "avcodec"
6940 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6941 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6942 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6943 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6944
6945 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6946
6947 #FIXME
6948 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6949     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6950
6951 enabled opus_decoder    && prepend avcodec_deps "swresample"
6952
6953 # reorder the items at var $1 to align with the items order at var $2 .
6954 # die if an item at $1 is not at $2 .
6955 reorder_by(){
6956     eval rb_in=\$$1
6957     eval rb_ordered=\$$2
6958
6959     for rb in $rb_in; do
6960         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6961     done
6962
6963     rb_out=
6964     for rb in $rb_ordered; do
6965         is_in $rb $rb_in && rb_out="$rb_out$rb "
6966     done
6967     eval $1=\$rb_out
6968 }
6969
6970 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6971 # within a set of N items, N expansions are enough to expose a cycle.
6972 expand_deps(){
6973     unique ${1}_deps  # required for the early break test.
6974     for dummy in $LIBRARY_LIST; do  # N iteratios
6975         eval deps=\$${1}_deps
6976         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6977         unique ${1}_deps
6978         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6979     done
6980
6981     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6982     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6983 }
6984
6985 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6986 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6987
6988 map 'expand_deps $v' $LIBRARY_LIST
6989
6990 if test "$quiet" != "yes"; then
6991
6992 echo "install prefix            $prefix"
6993 echo "source path               $source_path"
6994 echo "C compiler                $cc"
6995 echo "C library                 $libc_type"
6996 if test "$host_cc" != "$cc"; then
6997     echo "host C compiler           $host_cc"
6998     echo "host C library            $host_libc_type"
6999 fi
7000 echo "ARCH                      $arch ($cpu)"
7001 if test "$build_suffix" != ""; then
7002     echo "build suffix              $build_suffix"
7003 fi
7004 if test "$progs_suffix" != ""; then
7005     echo "progs suffix              $progs_suffix"
7006 fi
7007 if test "$extra_version" != ""; then
7008     echo "version string suffix     $extra_version"
7009 fi
7010 echo "big-endian                ${bigendian-no}"
7011 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7012 if enabled x86; then
7013     echo "standalone assembly       ${x86asm-no}"
7014     echo "x86 assembler             ${x86asmexe}"
7015     echo "MMX enabled               ${mmx-no}"
7016     echo "MMXEXT enabled            ${mmxext-no}"
7017     echo "3DNow! enabled            ${amd3dnow-no}"
7018     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7019     echo "SSE enabled               ${sse-no}"
7020     echo "SSSE3 enabled             ${ssse3-no}"
7021     echo "AESNI enabled             ${aesni-no}"
7022     echo "AVX enabled               ${avx-no}"
7023     echo "AVX2 enabled              ${avx2-no}"
7024     echo "AVX-512 enabled           ${avx512-no}"
7025     echo "XOP enabled               ${xop-no}"
7026     echo "FMA3 enabled              ${fma3-no}"
7027     echo "FMA4 enabled              ${fma4-no}"
7028     echo "i686 features enabled     ${i686-no}"
7029     echo "CMOV is fast              ${fast_cmov-no}"
7030     echo "EBX available             ${ebx_available-no}"
7031     echo "EBP available             ${ebp_available-no}"
7032 fi
7033 if enabled aarch64; then
7034     echo "NEON enabled              ${neon-no}"
7035     echo "VFP enabled               ${vfp-no}"
7036 fi
7037 if enabled arm; then
7038     echo "ARMv5TE enabled           ${armv5te-no}"
7039     echo "ARMv6 enabled             ${armv6-no}"
7040     echo "ARMv6T2 enabled           ${armv6t2-no}"
7041     echo "VFP enabled               ${vfp-no}"
7042     echo "NEON enabled              ${neon-no}"
7043     echo "THUMB enabled             ${thumb-no}"
7044 fi
7045 if enabled mips; then
7046     echo "MIPS FPU enabled          ${mipsfpu-no}"
7047     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7048     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7049     echo "MIPS MSA enabled          ${msa-no}"
7050     echo "LOONGSON MMI enabled      ${mmi-no}"
7051 fi
7052 if enabled ppc; then
7053     echo "AltiVec enabled           ${altivec-no}"
7054     echo "VSX enabled               ${vsx-no}"
7055     echo "POWER8 enabled            ${power8-no}"
7056     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7057     echo "dcbzl available           ${dcbzl-no}"
7058 fi
7059 echo "debug symbols             ${debug-no}"
7060 echo "strip symbols             ${stripping-no}"
7061 echo "optimize for size         ${small-no}"
7062 echo "optimizations             ${optimizations-no}"
7063 echo "static                    ${static-no}"
7064 echo "shared                    ${shared-no}"
7065 echo "postprocessing support    ${postproc-no}"
7066 echo "network support           ${network-no}"
7067 echo "threading support         ${thread_type-no}"
7068 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7069 echo "texi2html enabled         ${texi2html-no}"
7070 echo "perl enabled              ${perl-no}"
7071 echo "pod2man enabled           ${pod2man-no}"
7072 echo "makeinfo enabled          ${makeinfo-no}"
7073 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7074 test -n "$random_seed" &&
7075     echo "random seed               ${random_seed}"
7076 echo
7077
7078 echo "External libraries:"
7079 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7080 echo
7081
7082 echo "External libraries providing hardware acceleration:"
7083 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7084 echo
7085
7086 echo "Libraries:"
7087 print_enabled '' $LIBRARY_LIST | print_in_columns
7088 echo
7089
7090 echo "Programs:"
7091 print_enabled '' $PROGRAM_LIST | print_in_columns
7092 echo
7093
7094 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7095     echo "Enabled ${type}s:"
7096     eval list=\$$(toupper $type)_LIST
7097     print_enabled '_*' $list | print_in_columns
7098     echo
7099 done
7100
7101 if test -n "$ignore_tests"; then
7102     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7103     echo "Ignored FATE tests:"
7104     echo $ignore_tests | print_in_columns
7105     echo
7106 fi
7107
7108 echo "License: $license"
7109
7110 fi # test "$quiet" != "yes"
7111
7112 if test -n "$WARNINGS"; then
7113     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7114     enabled fatal_warnings && exit 1
7115 fi
7116
7117 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7118
7119 esc(){
7120     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7121 }
7122
7123 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7124
7125 enabled stripping || strip="echo skipping strip"
7126 enabled stripping || striptype=""
7127
7128 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7129
7130 cat > ffbuild/config.mak <<EOF
7131 # Automatically generated by configure - do not modify!
7132 ifndef FFMPEG_CONFIG_MAK
7133 FFMPEG_CONFIG_MAK=1
7134 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7135 prefix=$prefix
7136 LIBDIR=\$(DESTDIR)$libdir
7137 SHLIBDIR=\$(DESTDIR)$shlibdir
7138 INCDIR=\$(DESTDIR)$incdir
7139 BINDIR=\$(DESTDIR)$bindir
7140 DATADIR=\$(DESTDIR)$datadir
7141 DOCDIR=\$(DESTDIR)$docdir
7142 MANDIR=\$(DESTDIR)$mandir
7143 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7144 INSTALL_NAME_DIR=$install_name_dir
7145 SRC_PATH=$source_path
7146 SRC_LINK=$source_link
7147 ifndef MAIN_MAKEFILE
7148 SRC_PATH:=\$(SRC_PATH:.%=..%)
7149 endif
7150 CC_IDENT=$cc_ident
7151 ARCH=$arch
7152 INTRINSICS=$intrinsics
7153 EXTERN_PREFIX=$extern_prefix
7154 CC=$cc
7155 CXX=$cxx
7156 AS=$as
7157 OBJCC=$objcc
7158 LD=$ld
7159 DEPCC=$dep_cc
7160 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7161 DEPAS=$as
7162 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7163 X86ASM=$x86asmexe
7164 DEPX86ASM=$x86asmexe
7165 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7166 AR=$ar
7167 ARFLAGS=$arflags
7168 AR_O=$ar_o
7169 AR_CMD=$ar
7170 NM_CMD=$nm
7171 RANLIB=$ranlib
7172 STRIP=$strip
7173 STRIPTYPE=$striptype
7174 NVCC=$nvcc
7175 CP=cp -p
7176 LN_S=$ln_s
7177 CPPFLAGS=$CPPFLAGS
7178 CFLAGS=$CFLAGS
7179 CXXFLAGS=$CXXFLAGS
7180 OBJCFLAGS=$OBJCFLAGS
7181 ASFLAGS=$ASFLAGS
7182 NVCCFLAGS=$nvccflags
7183 AS_C=$AS_C
7184 AS_O=$AS_O
7185 OBJCC_C=$OBJCC_C
7186 OBJCC_E=$OBJCC_E
7187 OBJCC_O=$OBJCC_O
7188 CC_C=$CC_C
7189 CC_E=$CC_E
7190 CC_O=$CC_O
7191 CXX_C=$CXX_C
7192 CXX_O=$CXX_O
7193 NVCC_C=$NVCC_C
7194 NVCC_O=$NVCC_O
7195 LD_O=$LD_O
7196 X86ASM_O=$X86ASM_O
7197 LD_LIB=$LD_LIB
7198 LD_PATH=$LD_PATH
7199 DLLTOOL=$dlltool
7200 WINDRES=$windres
7201 DEPWINDRES=$dep_cc
7202 DOXYGEN=$doxygen
7203 LDFLAGS=$LDFLAGS
7204 LDEXEFLAGS=$LDEXEFLAGS
7205 LDSOFLAGS=$LDSOFLAGS
7206 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7207 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7208 X86ASMFLAGS=$X86ASMFLAGS
7209 BUILDSUF=$build_suffix
7210 PROGSSUF=$progs_suffix
7211 FULLNAME=$FULLNAME
7212 LIBPREF=$LIBPREF
7213 LIBSUF=$LIBSUF
7214 LIBNAME=$LIBNAME
7215 SLIBPREF=$SLIBPREF
7216 SLIBSUF=$SLIBSUF
7217 EXESUF=$EXESUF
7218 EXTRA_VERSION=$extra_version
7219 CCDEP=$CCDEP
7220 CXXDEP=$CXXDEP
7221 CCDEP_FLAGS=$CCDEP_FLAGS
7222 ASDEP=$ASDEP
7223 ASDEP_FLAGS=$ASDEP_FLAGS
7224 X86ASMDEP=$X86ASMDEP
7225 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7226 CC_DEPFLAGS=$CC_DEPFLAGS
7227 AS_DEPFLAGS=$AS_DEPFLAGS
7228 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7229 HOSTCC=$host_cc
7230 HOSTLD=$host_ld
7231 HOSTCFLAGS=$host_cflags
7232 HOSTCPPFLAGS=$host_cppflags
7233 HOSTEXESUF=$HOSTEXESUF
7234 HOSTLDFLAGS=$host_ldflags
7235 HOSTEXTRALIBS=$host_extralibs
7236 DEPHOSTCC=$host_cc
7237 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7238 HOSTCCDEP=$HOSTCCDEP
7239 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7240 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7241 HOSTCC_C=$HOSTCC_C
7242 HOSTCC_O=$HOSTCC_O
7243 HOSTLD_O=$HOSTLD_O
7244 TARGET_EXEC=$target_exec $target_exec_args
7245 TARGET_PATH=$target_path
7246 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7247 CFLAGS-ffplay=${sdl2_cflags}
7248 CFLAGS_HEADERS=$CFLAGS_HEADERS
7249 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7250 EXTRALIBS=$extralibs
7251 COMPAT_OBJS=$compat_objs
7252 INSTALL=$install
7253 LIBTARGET=${LIBTARGET}
7254 SLIBNAME=${SLIBNAME}
7255 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7256 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7257 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7258 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7259 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7260 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7261 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7262 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7263 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7264 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7265 NOREDZONE_FLAGS=$noredzone_flags
7266 LIBFUZZER_PATH=$libfuzzer_path
7267 IGNORE_TESTS=$ignore_tests
7268 EOF
7269
7270 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7271
7272 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7273     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7274 done
7275
7276 cat > $TMPH <<EOF
7277 /* Automatically generated by configure - do not modify! */
7278 #ifndef FFMPEG_CONFIG_H
7279 #define FFMPEG_CONFIG_H
7280 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7281 #define FFMPEG_LICENSE "$(c_escape $license)"
7282 #define CONFIG_THIS_YEAR 2019
7283 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7284 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7285 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7286 #define av_restrict $restrict_keyword
7287 #define EXTERN_PREFIX "${extern_prefix}"
7288 #define EXTERN_ASM ${extern_prefix}
7289 #define BUILDSUF "$build_suffix"
7290 #define SLIBSUF "$SLIBSUF"
7291 #define HAVE_MMX2 HAVE_MMXEXT
7292 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7293 EOF
7294
7295 test -n "$assert_level" &&
7296     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7297
7298 test -n "$malloc_prefix" &&
7299     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7300
7301 if enabled x86asm; then
7302     append config_files $TMPASM
7303     cat > $TMPASM <<EOF
7304 ; Automatically generated by configure - do not modify!
7305 EOF
7306 fi
7307
7308 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7309
7310
7311 mkdir -p doc
7312 mkdir -p tests
7313 mkdir -p tests/api
7314 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7315
7316 print_config ARCH_   "$config_files" $ARCH_LIST
7317 print_config HAVE_   "$config_files" $HAVE_LIST
7318 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7319                                      $CONFIG_EXTRA      \
7320                                      $ALL_COMPONENTS    \
7321
7322 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7323 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7324
7325 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7326 cp_if_changed $TMPH config.h
7327 touch ffbuild/.config
7328
7329 enabled x86asm && cp_if_changed $TMPASM config.asm
7330
7331 cat > $TMPH <<EOF
7332 /* Generated by ffmpeg configure */
7333 #ifndef AVUTIL_AVCONFIG_H
7334 #define AVUTIL_AVCONFIG_H
7335 EOF
7336
7337 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7338
7339 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7340
7341 cp_if_changed $TMPH libavutil/avconfig.h
7342
7343 # full_filter_name_foo=vf_foo
7344 # full_filter_name_bar=asrc_bar
7345 # ...
7346 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7347
7348 # generate the lists of enabled components
7349 print_enabled_components(){
7350     file=$1
7351     struct_name=$2
7352     name=$3
7353     shift 3
7354     echo "static const $struct_name * const $name[] = {" > $TMPH
7355     for c in $*; do
7356         if enabled $c; then
7357             case $name in
7358                 filter_list)
7359                     eval c=\$full_filter_name_${c%_filter}
7360                 ;;
7361                 indev_list)
7362                     c=${c%_indev}_demuxer
7363                 ;;
7364                 outdev_list)
7365                     c=${c%_outdev}_muxer
7366                 ;;
7367             esac
7368             printf "    &ff_%s,\n" $c >> $TMPH
7369         fi
7370     done
7371     if [ "$name" = "filter_list" ]; then
7372         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7373             printf "    &ff_%s,\n" $c >> $TMPH
7374         done
7375     fi
7376     echo "    NULL };" >> $TMPH
7377     cp_if_changed $TMPH $file
7378 }
7379
7380 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7381 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7382 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7383 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7384 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7385 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7386 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7387 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7388 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7389
7390 # Settings for pkg-config files
7391
7392 cat > $TMPH <<EOF
7393 # Automatically generated by configure - do not modify!
7394 shared=$shared
7395 build_suffix=$build_suffix
7396 prefix=$prefix
7397 libdir=$libdir
7398 incdir=$incdir
7399 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7400 source_path=${source_path}
7401 LIBPREF=${LIBPREF}
7402 LIBSUF=${LIBSUF}
7403 extralibs_avutil="$avutil_extralibs"
7404 extralibs_avcodec="$avcodec_extralibs"
7405 extralibs_avformat="$avformat_extralibs"
7406 extralibs_avdevice="$avdevice_extralibs"
7407 extralibs_avfilter="$avfilter_extralibs"
7408 extralibs_avresample="$avresample_extralibs"
7409 extralibs_postproc="$postproc_extralibs"
7410 extralibs_swscale="$swscale_extralibs"
7411 extralibs_swresample="$swresample_extralibs"
7412 EOF
7413
7414 for lib in $LIBRARY_LIST; do
7415     lib_deps="$(eval echo \$${lib}_deps)"
7416     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7417 done
7418
7419 cp_if_changed $TMPH ffbuild/config.sh