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-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 326   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 327   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 328   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 329   --enable-libdrm          enable DRM code (Linux) [no]
 330   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 331   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 332   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 333   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 334   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 335   --enable-omx             enable OpenMAX IL code [no]
 336   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 337   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 338   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 339   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 340   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 341   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 342
 343 Toolchain options:
 344   --arch=ARCH              select architecture [$arch]
 345   --cpu=CPU                select the minimum required CPU (affects
 346                            instruction selection, may crash on older CPUs)
 347   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 348   --progs-suffix=SUFFIX    program name suffix []
 349   --enable-cross-compile   assume a cross-compiler is used
 350   --sysroot=PATH           root of cross-build tree
 351   --sysinclude=PATH        location of cross-build system headers
 352   --target-os=OS           compiler targets OS [$target_os]
 353   --target-exec=CMD        command to run executables on target
 354   --target-path=DIR        path to view of build directory on target
 355   --target-samples=DIR     path to samples directory on target
 356   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 357   --toolchain=NAME         set tool defaults according to NAME
 358                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 359                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 360                            valgrind-massif, valgrind-memcheck,
 361                            msvc, icl, gcov, llvm-cov, hardened)
 362   --nm=NM                  use nm tool NM [$nm_default]
 363   --ar=AR                  use archive tool AR [$ar_default]
 364   --as=AS                  use assembler AS [$as_default]
 365   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 366   --strip=STRIP            use strip tool STRIP [$strip_default]
 367   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 368   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 369   --cc=CC                  use C compiler CC [$cc_default]
 370   --cxx=CXX                use C compiler CXX [$cxx_default]
 371   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 372   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 373   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 374   --ld=LD                  use linker LD [$ld_default]
 375   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 376   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 377   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 378   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 379   --host-cc=HOSTCC         use host C compiler HOSTCC
 380   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 381   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 382   --host-ld=HOSTLD         use host linker HOSTLD
 383   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 384   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 385   --host-os=OS             compiler host OS [$target_os]
 386   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 387   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 388   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 389   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 390   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 391   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 392   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 393   --extra-version=STRING   version string suffix []
 394   --optflags=OPTFLAGS      override optimization-related compiler flags
 395   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 396   --build-suffix=SUFFIX    library name suffix []
 397   --enable-pic             build position-independent code
 398   --enable-thumb           compile for Thumb instruction set
 399   --enable-lto             use link-time optimization
 400   --env="ENV=override"     override the environment variables
 401
 402 Advanced options (experts only):
 403   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 404   --custom-allocator=NAME  use a supported custom allocator
 405   --disable-symver         disable symbol versioning
 406   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 407   --disable-safe-bitstream-reader
 408                            disable buffer boundary checking in bitreaders
 409                            (faster, but may crash)
 410   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 411
 412 Optimization options (experts only):
 413   --disable-asm            disable all assembly optimizations
 414   --disable-altivec        disable AltiVec optimizations
 415   --disable-vsx            disable VSX optimizations
 416   --disable-power8         disable POWER8 optimizations
 417   --disable-amd3dnow       disable 3DNow! optimizations
 418   --disable-amd3dnowext    disable 3DNow! extended optimizations
 419   --disable-mmx            disable MMX optimizations
 420   --disable-mmxext         disable MMXEXT optimizations
 421   --disable-sse            disable SSE optimizations
 422   --disable-sse2           disable SSE2 optimizations
 423   --disable-sse3           disable SSE3 optimizations
 424   --disable-ssse3          disable SSSE3 optimizations
 425   --disable-sse4           disable SSE4 optimizations
 426   --disable-sse42          disable SSE4.2 optimizations
 427   --disable-avx            disable AVX optimizations
 428   --disable-xop            disable XOP optimizations
 429   --disable-fma3           disable FMA3 optimizations
 430   --disable-fma4           disable FMA4 optimizations
 431   --disable-avx2           disable AVX2 optimizations
 432   --disable-avx512         disable AVX-512 optimizations
 433   --disable-aesni          disable AESNI optimizations
 434   --disable-armv5te        disable armv5te optimizations
 435   --disable-armv6          disable armv6 optimizations
 436   --disable-armv6t2        disable armv6t2 optimizations
 437   --disable-vfp            disable VFP optimizations
 438   --disable-neon           disable NEON optimizations
 439   --disable-inline-asm     disable use of inline assembly
 440   --disable-x86asm         disable use of standalone x86 assembly
 441   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 442   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 443   --disable-msa            disable MSA optimizations
 444   --disable-mipsfpu        disable floating point MIPS optimizations
 445   --disable-mmi            disable Loongson SIMD optimizations
 446   --disable-fast-unaligned consider unaligned accesses slow
 447
 448 Developer options (useful when working on FFmpeg itself):
 449   --disable-debug          disable debugging symbols
 450   --enable-debug=LEVEL     set the debug level [$debuglevel]
 451   --disable-optimizations  disable compiler optimizations
 452   --enable-extra-warnings  enable more compiler warnings
 453   --disable-stripping      disable stripping of executables and shared libraries
 454   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 455                            2 causes a slowdown at runtime.
 456   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 457   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 458                            leaks and errors, using the specified valgrind binary.
 459                            Cannot be combined with --target-exec
 460   --enable-ftrapv          Trap arithmetic overflows
 461   --samples=PATH           location of test samples for FATE, if not set use
 462                            \$FATE_SAMPLES at make invocation time.
 463   --enable-neon-clobber-test check NEON registers for clobbering (should be
 464                            used only for debugging purposes)
 465   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 466                            should be used only for debugging purposes)
 467   --enable-random          randomly enable/disable components
 468   --disable-random
 469   --enable-random=LIST     randomly enable/disable specific components or
 470   --disable-random=LIST    component groups. LIST is a comma-separated list
 471                            of NAME[:PROB] entries where NAME is a component
 472                            (group) and PROB the probability associated with
 473                            NAME (default 0.5).
 474   --random-seed=VALUE      seed value for --enable/disable-random
 475   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 476                            (only applies to --disable-optimizations builds)
 477   --enable-ossfuzz         Enable building fuzzer tool
 478   --libfuzzer=PATH         path to libfuzzer
 479   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 480                            in the name) of tests whose result is ignored
 481   --enable-linux-perf      enable Linux Performance Monitor API
 482
 483 NOTE: Object files are built at the place where configure is launched.
 484 EOF
 485   exit 0
 486 }
 487
 488 if test -t 1 && which tput >/dev/null 2>&1; then
 489     ncolors=$(tput colors)
 490     if test -n "$ncolors" && test $ncolors -ge 8; then
 491         bold_color=$(tput bold)
 492         warn_color=$(tput setaf 3)
 493         error_color=$(tput setaf 1)
 494         reset_color=$(tput sgr0)
 495     fi
 496     # 72 used instead of 80 since that's the default of pr
 497     ncols=$(tput cols)
 498 fi
 499 : ${ncols:=72}
 500
 501 log(){
 502     echo "$@" >> $logfile
 503 }
 504
 505 log_file(){
 506     log BEGIN $1
 507     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 warn_if_gets_disabled(){
 653     for var in $*; do
 654         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 655     done
 656 }
 657
 658 enable(){
 659     set_all yes $*
 660 }
 661
 662 disable(){
 663     set_all no $*
 664 }
 665
 666 disable_with_reason(){
 667     disable $1
 668     eval "${1}_disable_reason=\"$2\""
 669     if requested $1; then
 670         die "ERROR: $1 requested, but $2"
 671     fi
 672 }
 673
 674 enable_weak(){
 675     set_weak yes $*
 676 }
 677
 678 disable_weak(){
 679     set_weak no $*
 680 }
 681
 682 enable_sanitized(){
 683     for var; do
 684         enable $(sanitize_var_name $var)
 685     done
 686 }
 687
 688 disable_sanitized(){
 689     for var; do
 690         disable $(sanitize_var_name $var)
 691     done
 692 }
 693
 694 do_enable_deep(){
 695     for var; do
 696         enabled $var && continue
 697         set -- $var
 698         eval enable_deep \$${var}_select
 699         var=$1
 700         eval enable_deep_weak \$${var}_suggest
 701     done
 702 }
 703
 704 enable_deep(){
 705     do_enable_deep $*
 706     enable $*
 707 }
 708
 709 enable_deep_weak(){
 710     for var; do
 711         disabled $var && continue
 712         set -- $var
 713         do_enable_deep $var
 714         var=$1
 715         enable_weak $var
 716     done
 717 }
 718
 719 requested(){
 720     test "${1#!}" = "$1" && op="=" || op="!="
 721     eval test "x\$${1#!}_requested" $op "xyes"
 722 }
 723
 724 enabled(){
 725     test "${1#!}" = "$1" && op="=" || op="!="
 726     eval test "x\$${1#!}" $op "xyes"
 727 }
 728
 729 disabled(){
 730     test "${1#!}" = "$1" && op="=" || op="!="
 731     eval test "x\$${1#!}" $op "xno"
 732 }
 733
 734 enabled_all(){
 735     for opt; do
 736         enabled $opt || return 1
 737     done
 738 }
 739
 740 disabled_all(){
 741     for opt; do
 742         disabled $opt || return 1
 743     done
 744 }
 745
 746 enabled_any(){
 747     for opt; do
 748         enabled $opt && return 0
 749     done
 750 }
 751
 752 disabled_any(){
 753     for opt; do
 754         disabled $opt && return 0
 755     done
 756     return 1
 757 }
 758
 759 set_default(){
 760     for opt; do
 761         eval : \${$opt:=\$${opt}_default}
 762     done
 763 }
 764
 765 is_in(){
 766     value=$1
 767     shift
 768     for var in $*; do
 769         [ $var = $value ] && return 0
 770     done
 771     return 1
 772 }
 773
 774 # The cfg loop is very hot (several thousands iterations), and in bash also
 775 # potentialy quite slow. Try to abort the iterations early, preferably without
 776 # calling functions. 70%+ of the time cfg is already done or without deps.
 777 check_deps(){
 778     for cfg; do
 779         eval [ x\$${cfg}_checking = xdone ] && continue
 780         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 781
 782         eval "
 783         dep_all=\$${cfg}_deps
 784         dep_any=\$${cfg}_deps_any
 785         dep_con=\$${cfg}_conflict
 786         dep_sel=\$${cfg}_select
 787         dep_sgs=\$${cfg}_suggest
 788         dep_ifa=\$${cfg}_if
 789         dep_ifn=\$${cfg}_if_any
 790         "
 791
 792         # most of the time here $cfg has no deps - avoid costly no-op work
 793         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 794             eval ${cfg}_checking=inprogress
 795
 796             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 797             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 798             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 799
 800             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 801             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 802             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 803             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 804             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 805             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 806
 807             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 808
 809             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 810                 # filter out library deps, these do not belong in extralibs
 811                 is_in $dep $LIBRARY_LIST && continue
 812                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 813             done
 814         fi
 815
 816         eval ${cfg}_checking=done
 817     done
 818 }
 819
 820 print_config(){
 821     pfx=$1
 822     files=$2
 823     shift 2
 824     map 'eval echo "$v \${$v:-no}"' "$@" |
 825     awk "BEGIN { split(\"$files\", files) }
 826         {
 827             c = \"$pfx\" toupper(\$1);
 828             v = \$2;
 829             sub(/yes/, 1, v);
 830             sub(/no/,  0, v);
 831             for (f in files) {
 832                 file = files[f];
 833                 if (file ~ /\\.h\$/) {
 834                     printf(\"#define %s %d\\n\", c, v) >>file;
 835                 } else if (file ~ /\\.asm\$/) {
 836                     printf(\"%%define %s %d\\n\", c, v) >>file;
 837                 } else if (file ~ /\\.mak\$/) {
 838                     n = -v ? \"\" : \"!\";
 839                     printf(\"%s%s=yes\\n\", n, c) >>file;
 840                 } else if (file ~ /\\.texi\$/) {
 841                     pre = -v ? \"\" : \"@c \";
 842                     yesno = \$2;
 843                     c2 = tolower(c);
 844                     gsub(/_/, \"-\", c2);
 845                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 846                 }
 847             }
 848         }"
 849 }
 850
 851 print_enabled(){
 852     suf=$1
 853     shift
 854     for v; do
 855         enabled $v && printf "%s\n" ${v%$suf}
 856     done
 857 }
 858
 859 append(){
 860     var=$1
 861     shift
 862     eval "$var=\"\$$var $*\""
 863 }
 864
 865 prepend(){
 866     var=$1
 867     shift
 868     eval "$var=\"$* \$$var\""
 869 }
 870
 871 reverse () {
 872     eval '
 873         reverse_out=
 874         for v in $'$1'; do
 875             reverse_out="$v $reverse_out"
 876         done
 877         '$1'=$reverse_out
 878     '
 879 }
 880
 881 # keeps the last occurence of each non-unique item
 882 unique(){
 883     unique_out=
 884     eval unique_in=\$$1
 885     reverse unique_in
 886     for v in $unique_in; do
 887         # " $unique_out" +space such that every item is surrounded with spaces
 888         case " $unique_out" in *" $v "*) continue; esac  # already in list
 889         unique_out="$unique_out$v "
 890     done
 891     reverse unique_out
 892     eval $1=\$unique_out
 893 }
 894
 895 resolve(){
 896     resolve_out=
 897     eval resolve_in=\$$1
 898     for v in $resolve_in; do
 899         eval 'resolve_out="$resolve_out$'$v' "'
 900     done
 901     eval $1=\$resolve_out
 902 }
 903
 904 add_cppflags(){
 905     append CPPFLAGS "$@"
 906 }
 907
 908 add_cflags(){
 909     append CFLAGS $($cflags_filter "$@")
 910 }
 911
 912 add_cflags_headers(){
 913     append CFLAGS_HEADERS $($cflags_filter "$@")
 914 }
 915
 916 add_cxxflags(){
 917     append CXXFLAGS $($cflags_filter "$@")
 918 }
 919
 920 add_objcflags(){
 921     append OBJCFLAGS $($objcflags_filter "$@")
 922 }
 923
 924 add_asflags(){
 925     append ASFLAGS $($asflags_filter "$@")
 926 }
 927
 928 add_ldflags(){
 929     append LDFLAGS $($ldflags_filter "$@")
 930 }
 931
 932 add_ldexeflags(){
 933     append LDEXEFLAGS $($ldflags_filter "$@")
 934 }
 935
 936 add_ldsoflags(){
 937     append LDSOFLAGS $($ldflags_filter "$@")
 938 }
 939
 940 add_extralibs(){
 941     prepend extralibs $($ldflags_filter "$@")
 942 }
 943
 944 add_stripflags(){
 945     append ASMSTRIPFLAGS "$@"
 946 }
 947
 948 add_host_cppflags(){
 949     append host_cppflags "$@"
 950 }
 951
 952 add_host_cflags(){
 953     append host_cflags $($host_cflags_filter "$@")
 954 }
 955
 956 add_host_ldflags(){
 957     append host_ldflags $($host_ldflags_filter "$@")
 958 }
 959
 960 add_compat(){
 961     append compat_objs $1
 962     shift
 963     map 'add_cppflags -D$v' "$@"
 964 }
 965
 966 test_cmd(){
 967     log "$@"
 968     "$@" >> $logfile 2>&1
 969 }
 970
 971 test_stat(){
 972     log test_stat "$@"
 973     stat "$1" >> $logfile 2>&1
 974 }
 975
 976 cc_e(){
 977     eval printf '%s\\n' $CC_E
 978 }
 979
 980 cc_o(){
 981     eval printf '%s\\n' $CC_O
 982 }
 983
 984 as_o(){
 985     eval printf '%s\\n' $AS_O
 986 }
 987
 988 x86asm_o(){
 989     eval printf '%s\\n' $X86ASM_O
 990 }
 991
 992 ld_o(){
 993     eval printf '%s\\n' $LD_O
 994 }
 995
 996 hostcc_e(){
 997     eval printf '%s\\n' $HOSTCC_E
 998 }
 999
1000 hostcc_o(){
1001     eval printf '%s\\n' $HOSTCC_O
1002 }
1003
1004 nvcc_o(){
1005     eval printf '%s\\n' $NVCC_O
1006 }
1007
1008 test_cc(){
1009     log test_cc "$@"
1010     cat > $TMPC
1011     log_file $TMPC
1012     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1013 }
1014
1015 test_cxx(){
1016     log test_cxx "$@"
1017     cat > $TMPCPP
1018     log_file $TMPCPP
1019     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1020 }
1021
1022 test_objcc(){
1023     log test_objcc "$@"
1024     cat > $TMPM
1025     log_file $TMPM
1026     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1027 }
1028
1029 test_nvcc(){
1030     log test_nvcc "$@"
1031     cat > $TMPCU
1032     log_file $TMPCU
1033     tmpcu_=$TMPCU
1034     tmpo_=$TMPO
1035     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1036     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1037 }
1038
1039 check_nvcc() {
1040     log check_nvcc "$@"
1041     test_nvcc <<EOF
1042 extern "C" {
1043     __global__ void hello(unsigned char *data) {}
1044 }
1045 EOF
1046 }
1047
1048 test_cpp(){
1049     log test_cpp "$@"
1050     cat > $TMPC
1051     log_file $TMPC
1052     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1053 }
1054
1055 test_as(){
1056     log test_as "$@"
1057     cat > $TMPS
1058     log_file $TMPS
1059     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1060 }
1061
1062 test_x86asm(){
1063     log test_x86asm "$@"
1064     echo "$1" > $TMPASM
1065     log_file $TMPASM
1066     shift
1067     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1068 }
1069
1070 check_cmd(){
1071     log check_cmd "$@"
1072     cmd=$1
1073     disabled $cmd && return
1074     disable $cmd
1075     test_cmd $@ && enable $cmd
1076 }
1077
1078 check_as(){
1079     log check_as "$@"
1080     name=$1
1081     code=$2
1082     shift 2
1083     disable $name
1084     test_as $@ <<EOF && enable $name
1085 $code
1086 EOF
1087 }
1088
1089 check_inline_asm(){
1090     log check_inline_asm "$@"
1091     name="$1"
1092     code="$2"
1093     shift 2
1094     disable $name
1095     test_cc "$@" <<EOF && enable $name
1096 void foo(void){ __asm__ volatile($code); }
1097 EOF
1098 }
1099
1100 check_inline_asm_flags(){
1101     log check_inline_asm_flags "$@"
1102     name="$1"
1103     code="$2"
1104     flags=''
1105     shift 2
1106     while [ "$1" != "" ]; do
1107       append flags $1
1108       shift
1109     done;
1110     disable $name
1111     cat > $TMPC <<EOF
1112 void foo(void){ __asm__ volatile($code); }
1113 EOF
1114     log_file $TMPC
1115     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1116     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1117 }
1118
1119 check_insn(){
1120     log check_insn "$@"
1121     check_inline_asm ${1}_inline "\"$2\""
1122     check_as ${1}_external "$2"
1123 }
1124
1125 check_x86asm(){
1126     log check_x86asm "$@"
1127     name=$1
1128     shift
1129     disable $name
1130     test_x86asm "$@" && enable $name
1131 }
1132
1133 test_ld(){
1134     log test_ld "$@"
1135     type=$1
1136     shift 1
1137     flags=$(filter_out '-l*|*.so' $@)
1138     libs=$(filter '-l*|*.so' $@)
1139     test_$type $($cflags_filter $flags) || return
1140     flags=$($ldflags_filter $flags)
1141     libs=$($ldflags_filter $libs)
1142     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1143 }
1144
1145 check_ld(){
1146     log check_ld "$@"
1147     type=$1
1148     name=$2
1149     shift 2
1150     disable $name
1151     test_ld $type $@ && enable $name
1152 }
1153
1154 print_include(){
1155     hdr=$1
1156     test "${hdr%.h}" = "${hdr}" &&
1157         echo "#include $hdr"    ||
1158         echo "#include <$hdr>"
1159 }
1160
1161 test_code(){
1162     log test_code "$@"
1163     check=$1
1164     headers=$2
1165     code=$3
1166     shift 3
1167     {
1168         for hdr in $headers; do
1169             print_include $hdr
1170         done
1171         echo "int main(void) { $code; return 0; }"
1172     } | test_$check "$@"
1173 }
1174
1175 check_cppflags(){
1176     log check_cppflags "$@"
1177     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1178 #include <stdlib.h>
1179 EOF
1180 }
1181
1182 test_cflags(){
1183     log test_cflags "$@"
1184     set -- $($cflags_filter "$@")
1185     test_cc "$@" <<EOF
1186 int x;
1187 EOF
1188 }
1189
1190 check_cflags(){
1191     log check_cflags "$@"
1192     test_cflags "$@" && add_cflags "$@"
1193 }
1194
1195 check_cxxflags(){
1196     log check_cxxflags "$@"
1197     set -- $($cflags_filter "$@")
1198     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1199 int x;
1200 EOF
1201 }
1202
1203 test_objcflags(){
1204     log test_objcflags "$@"
1205     set -- $($objcflags_filter "$@")
1206     test_objcc "$@" <<EOF
1207 int x;
1208 EOF
1209 }
1210
1211 check_objcflags(){
1212     log check_objcflags "$@"
1213     test_objcflags "$@" && add_objcflags "$@"
1214 }
1215
1216 test_ldflags(){
1217     log test_ldflags "$@"
1218     set -- $($ldflags_filter "$@")
1219     test_ld "cc" "$@" <<EOF
1220 int main(void){ return 0; }
1221 EOF
1222 }
1223
1224 check_ldflags(){
1225     log check_ldflags "$@"
1226     test_ldflags "$@" && add_ldflags "$@"
1227 }
1228
1229 test_stripflags(){
1230     log test_stripflags "$@"
1231     # call test_cc to get a fresh TMPO
1232     test_cc <<EOF
1233 int main(void) { return 0; }
1234 EOF
1235     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1236 }
1237
1238 check_stripflags(){
1239     log check_stripflags "$@"
1240     test_stripflags "$@" && add_stripflags "$@"
1241 }
1242
1243 check_headers(){
1244     log check_headers "$@"
1245     headers=$1
1246     shift
1247     disable_sanitized $headers
1248     {
1249         for hdr in $headers; do
1250             print_include $hdr
1251         done
1252         echo "int x;"
1253     } | test_cpp "$@" && enable_sanitized $headers
1254 }
1255
1256 check_header_objcc(){
1257     log check_header_objcc "$@"
1258     rm -f -- "$TMPO"
1259     header=$1
1260     shift
1261     disable_sanitized $header
1262     {
1263        echo "#include <$header>"
1264        echo "int main(void) { return 0; }"
1265     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1266 }
1267
1268 check_apple_framework(){
1269     log check_apple_framework "$@"
1270     framework="$1"
1271     name="$(tolower $framework)"
1272     header="${framework}/${framework}.h"
1273     disable $name
1274     check_header_objcc $header &&
1275         enable $name && eval ${name}_extralibs='"-framework $framework"'
1276 }
1277
1278 check_func(){
1279     log check_func "$@"
1280     func=$1
1281     shift
1282     disable $func
1283     test_ld "cc" "$@" <<EOF && enable $func
1284 extern int $func();
1285 int main(void){ $func(); }
1286 EOF
1287 }
1288
1289 check_complexfunc(){
1290     log check_complexfunc "$@"
1291     func=$1
1292     narg=$2
1293     shift 2
1294     test $narg = 2 && args="f, g" || args="f * I"
1295     disable $func
1296     test_ld "cc" "$@" <<EOF && enable $func
1297 #include <complex.h>
1298 #include <math.h>
1299 float foo(complex float f, complex float g) { return $func($args); }
1300 int main(void){ return (int) foo; }
1301 EOF
1302 }
1303
1304 check_mathfunc(){
1305     log check_mathfunc "$@"
1306     func=$1
1307     narg=$2
1308     shift 2
1309     test $narg = 2 && args="f, g" || args="f"
1310     disable $func
1311     test_ld "cc" "$@" <<EOF && enable $func
1312 #include <math.h>
1313 float foo(float f, float g) { return $func($args); }
1314 int main(void){ return (int) foo; }
1315 EOF
1316 }
1317
1318 check_func_headers(){
1319     log check_func_headers "$@"
1320     headers=$1
1321     funcs=$2
1322     shift 2
1323     {
1324         for hdr in $headers; do
1325             print_include $hdr
1326         done
1327         echo "#include <stdint.h>"
1328         for func in $funcs; do
1329             echo "long check_$func(void) { return (long) $func; }"
1330         done
1331         echo "int main(void) { int ret = 0;"
1332         # LTO could optimize out the test functions without this
1333         for func in $funcs; do
1334             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1335         done
1336         echo "return ret; }"
1337     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1338 }
1339
1340 check_class_headers_cpp(){
1341     log check_class_headers_cpp "$@"
1342     headers=$1
1343     classes=$2
1344     shift 2
1345     {
1346         for hdr in $headers; do
1347             echo "#include <$hdr>"
1348         done
1349         echo "int main(void) { "
1350         i=1
1351         for class in $classes; do
1352             echo "$class obj$i;"
1353             i=$(expr $i + 1)
1354         done
1355         echo "return 0; }"
1356     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 test_cpp_condition(){
1360     log test_cpp_condition "$@"
1361     header=$1
1362     condition=$2
1363     shift 2
1364     test_cpp "$@" <<EOF
1365 #include <$header>
1366 #if !($condition)
1367 #error "unsatisfied condition: $condition"
1368 #endif
1369 EOF
1370 }
1371
1372 check_cpp_condition(){
1373     log check_cpp_condition "$@"
1374     name=$1
1375     shift 1
1376     disable $name
1377     test_cpp_condition "$@" && enable $name
1378 }
1379
1380 test_cflags_cc(){
1381     log test_cflags_cc "$@"
1382     flags=$1
1383     header=$2
1384     condition=$3
1385     shift 3
1386     set -- $($cflags_filter "$flags")
1387     test_cc "$@" <<EOF
1388 #include <$header>
1389 #if !($condition)
1390 #error "unsatisfied condition: $condition"
1391 #endif
1392 EOF
1393 }
1394
1395 check_lib(){
1396     log check_lib "$@"
1397     name="$1"
1398     headers="$2"
1399     funcs="$3"
1400     shift 3
1401     disable $name
1402     check_func_headers "$headers" "$funcs" "$@" &&
1403         enable $name && eval ${name}_extralibs="\$@"
1404 }
1405
1406 check_lib_cpp(){
1407     log check_lib_cpp "$@"
1408     name="$1"
1409     headers="$2"
1410     classes="$3"
1411     shift 3
1412     disable $name
1413     check_class_headers_cpp "$headers" "$classes" "$@" &&
1414         enable $name && eval ${name}_extralibs="\$@"
1415 }
1416
1417 test_pkg_config(){
1418     log test_pkg_config "$@"
1419     name="$1"
1420     pkg_version="$2"
1421     pkg="${2%% *}"
1422     headers="$3"
1423     funcs="$4"
1424     shift 4
1425     disable $name
1426     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1427     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1428     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1429     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1430         enable $name &&
1431         set_sanitized "${name}_cflags"    $pkg_cflags &&
1432         set_sanitized "${name}_extralibs" $pkg_libs
1433 }
1434
1435 check_pkg_config(){
1436     log check_pkg_config "$@"
1437     name="$1"
1438     test_pkg_config "$@" &&
1439         eval add_cflags \$${name}_cflags
1440 }
1441
1442 test_exec(){
1443     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1444 }
1445
1446 check_exec_crash(){
1447     log check_exec_crash "$@"
1448     code=$(cat)
1449
1450     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1451     # are safe but may not be available everywhere.  Thus we use
1452     # raise(SIGTERM) instead.  The check is run in a subshell so we
1453     # can redirect the "Terminated" message from the shell.  SIGBUS
1454     # is not defined by standard C so it is used conditionally.
1455
1456     (test_exec "$@") >> $logfile 2>&1 <<EOF
1457 #include <signal.h>
1458 static void sighandler(int sig){
1459     raise(SIGTERM);
1460 }
1461 int foo(void){
1462     $code
1463 }
1464 int (*func_ptr)(void) = foo;
1465 int main(void){
1466     signal(SIGILL, sighandler);
1467     signal(SIGFPE, sighandler);
1468     signal(SIGSEGV, sighandler);
1469 #ifdef SIGBUS
1470     signal(SIGBUS, sighandler);
1471 #endif
1472     return func_ptr();
1473 }
1474 EOF
1475 }
1476
1477 check_type(){
1478     log check_type "$@"
1479     headers=$1
1480     type=$2
1481     shift 2
1482     disable_sanitized "$type"
1483     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1484 }
1485
1486 check_struct(){
1487     log check_struct "$@"
1488     headers=$1
1489     struct=$2
1490     member=$3
1491     shift 3
1492     disable_sanitized "${struct}_${member}"
1493     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1494         enable_sanitized "${struct}_${member}"
1495 }
1496
1497 check_builtin(){
1498     log check_builtin "$@"
1499     name=$1
1500     headers=$2
1501     builtin=$3
1502     shift 3
1503     disable "$name"
1504     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1505 }
1506
1507 check_compile_assert(){
1508     log check_compile_assert "$@"
1509     name=$1
1510     headers=$2
1511     condition=$3
1512     shift 3
1513     disable "$name"
1514     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1515 }
1516
1517 check_cc(){
1518     log check_cc "$@"
1519     name=$1
1520     shift
1521     disable "$name"
1522     test_code cc "$@" && enable "$name"
1523 }
1524
1525 require(){
1526     log require "$@"
1527     name_version="$1"
1528     name="${1%% *}"
1529     shift
1530     check_lib $name "$@" || die "ERROR: $name_version not found"
1531 }
1532
1533 require_cc(){
1534     log require_cc "$@"
1535     name="$1"
1536     check_cc "$@" || die "ERROR: $name failed"
1537 }
1538
1539 require_cpp(){
1540     name="$1"
1541     headers="$2"
1542     classes="$3"
1543     shift 3
1544     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1545 }
1546
1547 require_headers(){
1548     log require_headers "$@"
1549     headers="$1"
1550     check_headers "$@" || die "ERROR: $headers not found"
1551 }
1552
1553 require_cpp_condition(){
1554     log require_cpp_condition "$@"
1555     condition="$3"
1556     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1557 }
1558
1559 require_pkg_config(){
1560     log require_pkg_config "$@"
1561     pkg_version="$2"
1562     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1563 }
1564
1565 test_host_cc(){
1566     log test_host_cc "$@"
1567     cat > $TMPC
1568     log_file $TMPC
1569     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1570 }
1571
1572 test_host_cpp(){
1573     log test_host_cpp "$@"
1574     cat > $TMPC
1575     log_file $TMPC
1576     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1577 }
1578
1579 check_host_cppflags(){
1580     log check_host_cppflags "$@"
1581     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1582 #include <stdlib.h>
1583 EOF
1584 }
1585
1586 check_host_cflags(){
1587     log check_host_cflags "$@"
1588     set -- $($host_cflags_filter "$@")
1589     test_host_cc "$@" <<EOF && append host_cflags "$@"
1590 int x;
1591 EOF
1592 }
1593
1594 test_host_cpp_condition(){
1595     log test_host_cpp_condition "$@"
1596     header=$1
1597     condition=$2
1598     shift 2
1599     test_host_cpp "$@" <<EOF
1600 #include <$header>
1601 #if !($condition)
1602 #error "unsatisfied condition: $condition"
1603 #endif
1604 EOF
1605 }
1606
1607 check_host_cpp_condition(){
1608     log check_host_cpp_condition "$@"
1609     name=$1
1610     shift 1
1611     disable $name
1612     test_host_cpp_condition "$@" && enable $name
1613 }
1614
1615 cp_if_changed(){
1616     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1617     mkdir -p "$(dirname $2)"
1618     cp -f "$1" "$2"
1619 }
1620
1621 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1622 # system-dependent things.
1623
1624 AVCODEC_COMPONENTS="
1625     bsfs
1626     decoders
1627     encoders
1628     hwaccels
1629     parsers
1630 "
1631
1632 AVDEVICE_COMPONENTS="
1633     indevs
1634     outdevs
1635 "
1636
1637 AVFILTER_COMPONENTS="
1638     filters
1639 "
1640
1641 AVFORMAT_COMPONENTS="
1642     demuxers
1643     muxers
1644     protocols
1645 "
1646
1647 COMPONENT_LIST="
1648     $AVCODEC_COMPONENTS
1649     $AVDEVICE_COMPONENTS
1650     $AVFILTER_COMPONENTS
1651     $AVFORMAT_COMPONENTS
1652 "
1653
1654 EXAMPLE_LIST="
1655     avio_dir_cmd_example
1656     avio_reading_example
1657     decode_audio_example
1658     decode_video_example
1659     demuxing_decoding_example
1660     encode_audio_example
1661     encode_video_example
1662     extract_mvs_example
1663     filter_audio_example
1664     filtering_audio_example
1665     filtering_video_example
1666     http_multiclient_example
1667     hw_decode_example
1668     metadata_example
1669     muxing_example
1670     qsvdec_example
1671     remuxing_example
1672     resampling_audio_example
1673     scaling_video_example
1674     transcode_aac_example
1675     transcoding_example
1676     vaapi_encode_example
1677     vaapi_transcode_example
1678 "
1679
1680 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1681     alsa
1682     appkit
1683     avfoundation
1684     bzlib
1685     coreimage
1686     iconv
1687     libxcb
1688     libxcb_shm
1689     libxcb_shape
1690     libxcb_xfixes
1691     lzma
1692     schannel
1693     sdl2
1694     securetransport
1695     sndio
1696     xlib
1697     zlib
1698 "
1699
1700 EXTERNAL_LIBRARY_GPL_LIST="
1701     avisynth
1702     frei0r
1703     libcdio
1704     libdavs2
1705     librubberband
1706     libvidstab
1707     libx264
1708     libx265
1709     libxavs
1710     libxavs2
1711     libxvid
1712 "
1713
1714 EXTERNAL_LIBRARY_NONFREE_LIST="
1715     decklink
1716     libndi_newtek
1717     libfdk_aac
1718     openssl
1719     libtls
1720 "
1721
1722 EXTERNAL_LIBRARY_VERSION3_LIST="
1723     gmp
1724     libaribb24
1725     liblensfun
1726     libopencore_amrnb
1727     libopencore_amrwb
1728     libvmaf
1729     libvo_amrwbenc
1730     mbedtls
1731     rkmpp
1732 "
1733
1734 EXTERNAL_LIBRARY_GPLV3_LIST="
1735     libsmbclient
1736 "
1737
1738 EXTERNAL_LIBRARY_LIST="
1739     $EXTERNAL_LIBRARY_GPL_LIST
1740     $EXTERNAL_LIBRARY_NONFREE_LIST
1741     $EXTERNAL_LIBRARY_VERSION3_LIST
1742     $EXTERNAL_LIBRARY_GPLV3_LIST
1743     chromaprint
1744     gcrypt
1745     gnutls
1746     jni
1747     ladspa
1748     libaom
1749     libass
1750     libbluray
1751     libbs2b
1752     libcaca
1753     libcelt
1754     libcodec2
1755     libdav1d
1756     libdc1394
1757     libdrm
1758     libflite
1759     libfontconfig
1760     libfreetype
1761     libfribidi
1762     libgme
1763     libgsm
1764     libiec61883
1765     libilbc
1766     libjack
1767     libklvanc
1768     libkvazaar
1769     libmodplug
1770     libmp3lame
1771     libmysofa
1772     libopencv
1773     libopenh264
1774     libopenjpeg
1775     libopenmpt
1776     libopus
1777     libpulse
1778     librsvg
1779     librtmp
1780     libshine
1781     libsmbclient
1782     libsnappy
1783     libsoxr
1784     libspeex
1785     libsrt
1786     libssh
1787     libtensorflow
1788     libtesseract
1789     libtheora
1790     libtwolame
1791     libv4l2
1792     libvorbis
1793     libvpx
1794     libwavpack
1795     libwebp
1796     libxml2
1797     libzimg
1798     libzmq
1799     libzvbi
1800     lv2
1801     mediacodec
1802     openal
1803     opengl
1804     vapoursynth
1805 "
1806
1807 HWACCEL_AUTODETECT_LIBRARY_LIST="
1808     amf
1809     audiotoolbox
1810     crystalhd
1811     cuda
1812     cuvid
1813     d3d11va
1814     dxva2
1815     ffnvcodec
1816     nvdec
1817     nvenc
1818     vaapi
1819     vdpau
1820     videotoolbox
1821     v4l2_m2m
1822     xvmc
1823 "
1824
1825 # catchall list of things that require external libs to link
1826 EXTRALIBS_LIST="
1827     cpu_init
1828     cws2fws
1829 "
1830
1831 HWACCEL_LIBRARY_NONFREE_LIST="
1832     cuda_nvcc
1833     cuda_sdk
1834     libnpp
1835 "
1836
1837 HWACCEL_LIBRARY_LIST="
1838     $HWACCEL_LIBRARY_NONFREE_LIST
1839     libmfx
1840     mmal
1841     omx
1842     opencl
1843 "
1844
1845 DOCUMENT_LIST="
1846     doc
1847     htmlpages
1848     manpages
1849     podpages
1850     txtpages
1851 "
1852
1853 FEATURE_LIST="
1854     ftrapv
1855     gray
1856     hardcoded_tables
1857     omx_rpi
1858     runtime_cpudetect
1859     safe_bitstream_reader
1860     shared
1861     small
1862     static
1863     swscale_alpha
1864 "
1865
1866 # this list should be kept in linking order
1867 LIBRARY_LIST="
1868     avdevice
1869     avfilter
1870     swscale
1871     postproc
1872     avformat
1873     avcodec
1874     swresample
1875     avresample
1876     avutil
1877 "
1878
1879 LICENSE_LIST="
1880     gpl
1881     nonfree
1882     version3
1883 "
1884
1885 PROGRAM_LIST="
1886     ffplay
1887     ffprobe
1888     ffmpeg
1889 "
1890
1891 SUBSYSTEM_LIST="
1892     dct
1893     dwt
1894     error_resilience
1895     faan
1896     fast_unaligned
1897     fft
1898     lsp
1899     lzo
1900     mdct
1901     pixelutils
1902     network
1903     rdft
1904 "
1905
1906 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1907 CONFIG_LIST="
1908     $DOCUMENT_LIST
1909     $EXAMPLE_LIST
1910     $EXTERNAL_LIBRARY_LIST
1911     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1912     $HWACCEL_LIBRARY_LIST
1913     $HWACCEL_AUTODETECT_LIBRARY_LIST
1914     $FEATURE_LIST
1915     $LICENSE_LIST
1916     $LIBRARY_LIST
1917     $PROGRAM_LIST
1918     $SUBSYSTEM_LIST
1919     autodetect
1920     fontconfig
1921     linux_perf
1922     memory_poisoning
1923     neon_clobber_test
1924     ossfuzz
1925     pic
1926     thumb
1927     valgrind_backtrace
1928     xmm_clobber_test
1929     $COMPONENT_LIST
1930 "
1931
1932 THREADS_LIST="
1933     pthreads
1934     os2threads
1935     w32threads
1936 "
1937
1938 ATOMICS_LIST="
1939     atomics_gcc
1940     atomics_suncc
1941     atomics_win32
1942 "
1943
1944 AUTODETECT_LIBS="
1945     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1946     $HWACCEL_AUTODETECT_LIBRARY_LIST
1947     $THREADS_LIST
1948 "
1949
1950 ARCH_LIST="
1951     aarch64
1952     alpha
1953     arm
1954     avr32
1955     avr32_ap
1956     avr32_uc
1957     bfin
1958     ia64
1959     m68k
1960     mips
1961     mips64
1962     parisc
1963     ppc
1964     ppc64
1965     s390
1966     sh4
1967     sparc
1968     sparc64
1969     tilegx
1970     tilepro
1971     tomi
1972     x86
1973     x86_32
1974     x86_64
1975 "
1976
1977 ARCH_EXT_LIST_ARM="
1978     armv5te
1979     armv6
1980     armv6t2
1981     armv8
1982     neon
1983     vfp
1984     vfpv3
1985     setend
1986 "
1987
1988 ARCH_EXT_LIST_MIPS="
1989     mipsfpu
1990     mips32r2
1991     mips32r5
1992     mips64r2
1993     mips32r6
1994     mips64r6
1995     mipsdsp
1996     mipsdspr2
1997     msa
1998 "
1999
2000 ARCH_EXT_LIST_LOONGSON="
2001     loongson2
2002     loongson3
2003     mmi
2004 "
2005
2006 ARCH_EXT_LIST_X86_SIMD="
2007     aesni
2008     amd3dnow
2009     amd3dnowext
2010     avx
2011     avx2
2012     avx512
2013     fma3
2014     fma4
2015     mmx
2016     mmxext
2017     sse
2018     sse2
2019     sse3
2020     sse4
2021     sse42
2022     ssse3
2023     xop
2024 "
2025
2026 ARCH_EXT_LIST_PPC="
2027     altivec
2028     dcbzl
2029     ldbrx
2030     power8
2031     ppc4xx
2032     vsx
2033 "
2034
2035 ARCH_EXT_LIST_X86="
2036     $ARCH_EXT_LIST_X86_SIMD
2037     cpunop
2038     i686
2039 "
2040
2041 ARCH_EXT_LIST="
2042     $ARCH_EXT_LIST_ARM
2043     $ARCH_EXT_LIST_PPC
2044     $ARCH_EXT_LIST_X86
2045     $ARCH_EXT_LIST_MIPS
2046     $ARCH_EXT_LIST_LOONGSON
2047 "
2048
2049 ARCH_FEATURES="
2050     aligned_stack
2051     fast_64bit
2052     fast_clz
2053     fast_cmov
2054     local_aligned
2055     simd_align_16
2056     simd_align_32
2057     simd_align_64
2058 "
2059
2060 BUILTIN_LIST="
2061     atomic_cas_ptr
2062     machine_rw_barrier
2063     MemoryBarrier
2064     mm_empty
2065     rdtsc
2066     sem_timedwait
2067     sync_val_compare_and_swap
2068 "
2069 HAVE_LIST_CMDLINE="
2070     inline_asm
2071     symver
2072     x86asm
2073 "
2074
2075 HAVE_LIST_PUB="
2076     bigendian
2077     fast_unaligned
2078 "
2079
2080 HEADERS_LIST="
2081     arpa_inet_h
2082     asm_types_h
2083     cdio_paranoia_h
2084     cdio_paranoia_paranoia_h
2085     cuda_h
2086     dispatch_dispatch_h
2087     dev_bktr_ioctl_bt848_h
2088     dev_bktr_ioctl_meteor_h
2089     dev_ic_bt8xx_h
2090     dev_video_bktr_ioctl_bt848_h
2091     dev_video_meteor_ioctl_meteor_h
2092     direct_h
2093     dirent_h
2094     dxgidebug_h
2095     dxva_h
2096     ES2_gl_h
2097     gsm_h
2098     io_h
2099     linux_perf_event_h
2100     machine_ioctl_bt848_h
2101     machine_ioctl_meteor_h
2102     malloc_h
2103     opencv2_core_core_c_h
2104     OpenGL_gl3_h
2105     poll_h
2106     sys_param_h
2107     sys_resource_h
2108     sys_select_h
2109     sys_soundcard_h
2110     sys_time_h
2111     sys_un_h
2112     sys_videoio_h
2113     termios_h
2114     udplite_h
2115     unistd_h
2116     valgrind_valgrind_h
2117     windows_h
2118     winsock2_h
2119 "
2120
2121 INTRINSICS_LIST="
2122     intrinsics_neon
2123 "
2124
2125 COMPLEX_FUNCS="
2126     cabs
2127     cexp
2128 "
2129
2130 MATH_FUNCS="
2131     atanf
2132     atan2f
2133     cbrt
2134     cbrtf
2135     copysign
2136     cosf
2137     erf
2138     exp2
2139     exp2f
2140     expf
2141     hypot
2142     isfinite
2143     isinf
2144     isnan
2145     ldexpf
2146     llrint
2147     llrintf
2148     log2
2149     log2f
2150     log10f
2151     lrint
2152     lrintf
2153     powf
2154     rint
2155     round
2156     roundf
2157     sinf
2158     trunc
2159     truncf
2160 "
2161
2162 SYSTEM_FEATURES="
2163     dos_paths
2164     libc_msvcrt
2165     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2166     section_data_rel_ro
2167     threads
2168     uwp
2169     winrt
2170 "
2171
2172 SYSTEM_FUNCS="
2173     access
2174     aligned_malloc
2175     arc4random
2176     clock_gettime
2177     closesocket
2178     CommandLineToArgvW
2179     fcntl
2180     getaddrinfo
2181     gethrtime
2182     getopt
2183     GetProcessAffinityMask
2184     GetProcessMemoryInfo
2185     GetProcessTimes
2186     getrusage
2187     GetSystemTimeAsFileTime
2188     gettimeofday
2189     glob
2190     glXGetProcAddress
2191     gmtime_r
2192     inet_aton
2193     isatty
2194     kbhit
2195     localtime_r
2196     lstat
2197     lzo1x_999_compress
2198     mach_absolute_time
2199     MapViewOfFile
2200     memalign
2201     mkstemp
2202     mmap
2203     mprotect
2204     nanosleep
2205     PeekNamedPipe
2206     posix_memalign
2207     pthread_cancel
2208     sched_getaffinity
2209     SecItemImport
2210     SetConsoleTextAttribute
2211     SetConsoleCtrlHandler
2212     setmode
2213     setrlimit
2214     Sleep
2215     strerror_r
2216     sysconf
2217     sysctl
2218     usleep
2219     UTGetOSTypeFromString
2220     VirtualAlloc
2221     wglGetProcAddress
2222 "
2223
2224 SYSTEM_LIBRARIES="
2225     bcrypt
2226     vaapi_drm
2227     vaapi_x11
2228     vdpau_x11
2229 "
2230
2231 TOOLCHAIN_FEATURES="
2232     as_arch_directive
2233     as_dn_directive
2234     as_fpu_directive
2235     as_func
2236     as_object_arch
2237     asm_mod_q
2238     blocks_extension
2239     ebp_available
2240     ebx_available
2241     gnu_as
2242     gnu_windres
2243     ibm_asm
2244     inline_asm_direct_symbol_refs
2245     inline_asm_labels
2246     inline_asm_nonlocal_labels
2247     pragma_deprecated
2248     rsync_contimeout
2249     symver_asm_label
2250     symver_gnu_asm
2251     vfp_args
2252     xform_asm
2253     xmm_clobbers
2254 "
2255
2256 TYPES_LIST="
2257     kCMVideoCodecType_HEVC
2258     socklen_t
2259     struct_addrinfo
2260     struct_group_source_req
2261     struct_ip_mreq_source
2262     struct_ipv6_mreq
2263     struct_msghdr_msg_flags
2264     struct_pollfd
2265     struct_rusage_ru_maxrss
2266     struct_sctp_event_subscribe
2267     struct_sockaddr_in6
2268     struct_sockaddr_sa_len
2269     struct_sockaddr_storage
2270     struct_stat_st_mtim_tv_nsec
2271     struct_v4l2_frmivalenum_discrete
2272 "
2273
2274 HAVE_LIST="
2275     $ARCH_EXT_LIST
2276     $(add_suffix _external $ARCH_EXT_LIST)
2277     $(add_suffix _inline   $ARCH_EXT_LIST)
2278     $ARCH_FEATURES
2279     $BUILTIN_LIST
2280     $COMPLEX_FUNCS
2281     $HAVE_LIST_CMDLINE
2282     $HAVE_LIST_PUB
2283     $HEADERS_LIST
2284     $INTRINSICS_LIST
2285     $MATH_FUNCS
2286     $SYSTEM_FEATURES
2287     $SYSTEM_FUNCS
2288     $SYSTEM_LIBRARIES
2289     $THREADS_LIST
2290     $TOOLCHAIN_FEATURES
2291     $TYPES_LIST
2292     makeinfo
2293     makeinfo_html
2294     opencl_d3d11
2295     opencl_drm_arm
2296     opencl_drm_beignet
2297     opencl_dxva2
2298     opencl_vaapi_beignet
2299     opencl_vaapi_intel_media
2300     perl
2301     pod2man
2302     texi2html
2303 "
2304
2305 # options emitted with CONFIG_ prefix but not available on the command line
2306 CONFIG_EXTRA="
2307     aandcttables
2308     ac3dsp
2309     adts_header
2310     audio_frame_queue
2311     audiodsp
2312     blockdsp
2313     bswapdsp
2314     cabac
2315     cbs
2316     cbs_av1
2317     cbs_h264
2318     cbs_h265
2319     cbs_jpeg
2320     cbs_mpeg2
2321     cbs_vp9
2322     dirac_parse
2323     dnn
2324     dvprofile
2325     exif
2326     faandct
2327     faanidct
2328     fdctdsp
2329     flacdsp
2330     fmtconvert
2331     frame_thread_encoder
2332     g722dsp
2333     golomb
2334     gplv3
2335     h263dsp
2336     h264chroma
2337     h264dsp
2338     h264parse
2339     h264pred
2340     h264qpel
2341     hevcparse
2342     hpeldsp
2343     huffman
2344     huffyuvdsp
2345     huffyuvencdsp
2346     idctdsp
2347     iirfilter
2348     mdct15
2349     intrax8
2350     iso_media
2351     ividsp
2352     jpegtables
2353     lgplv3
2354     libx262
2355     llauddsp
2356     llviddsp
2357     llvidencdsp
2358     lpc
2359     lzf
2360     me_cmp
2361     mpeg_er
2362     mpegaudio
2363     mpegaudiodsp
2364     mpegaudioheader
2365     mpegvideo
2366     mpegvideoenc
2367     mss34dsp
2368     pixblockdsp
2369     qpeldsp
2370     qsv
2371     qsvdec
2372     qsvenc
2373     qsvvpp
2374     rangecoder
2375     riffdec
2376     riffenc
2377     rtpdec
2378     rtpenc_chain
2379     rv34dsp
2380     scene_sad
2381     sinewin
2382     snappy
2383     srtp
2384     startcode
2385     texturedsp
2386     texturedspenc
2387     tpeldsp
2388     vaapi_1
2389     vaapi_encode
2390     vc1dsp
2391     videodsp
2392     vp3dsp
2393     vp56dsp
2394     vp8dsp
2395     wma_freqs
2396     wmv2dsp
2397 "
2398
2399 CMDLINE_SELECT="
2400     $ARCH_EXT_LIST
2401     $CONFIG_LIST
2402     $HAVE_LIST_CMDLINE
2403     $THREADS_LIST
2404     asm
2405     cross_compile
2406     debug
2407     extra_warnings
2408     logging
2409     lto
2410     optimizations
2411     rpath
2412     stripping
2413 "
2414
2415 PATHS_LIST="
2416     bindir
2417     datadir
2418     docdir
2419     incdir
2420     libdir
2421     mandir
2422     pkgconfigdir
2423     prefix
2424     shlibdir
2425     install_name_dir
2426 "
2427
2428 CMDLINE_SET="
2429     $PATHS_LIST
2430     ar
2431     arch
2432     as
2433     assert_level
2434     build_suffix
2435     cc
2436     objcc
2437     cpu
2438     cross_prefix
2439     custom_allocator
2440     cxx
2441     dep_cc
2442     doxygen
2443     env
2444     extra_version
2445     gas
2446     host_cc
2447     host_cflags
2448     host_extralibs
2449     host_ld
2450     host_ldflags
2451     host_os
2452     ignore_tests
2453     install
2454     ld
2455     ln_s
2456     logfile
2457     malloc_prefix
2458     nm
2459     optflags
2460     nvcc
2461     nvccflags
2462     pkg_config
2463     pkg_config_flags
2464     progs_suffix
2465     random_seed
2466     ranlib
2467     samples
2468     strip
2469     sws_max_filter_size
2470     sysinclude
2471     sysroot
2472     target_exec
2473     target_os
2474     target_path
2475     target_samples
2476     tempprefix
2477     toolchain
2478     valgrind
2479     windres
2480     x86asmexe
2481 "
2482
2483 CMDLINE_APPEND="
2484     extra_cflags
2485     extra_cxxflags
2486     extra_objcflags
2487     host_cppflags
2488 "
2489
2490 # code dependency declarations
2491
2492 # architecture extensions
2493
2494 armv5te_deps="arm"
2495 armv6_deps="arm"
2496 armv6t2_deps="arm"
2497 armv8_deps="aarch64"
2498 neon_deps_any="aarch64 arm"
2499 intrinsics_neon_deps="neon"
2500 vfp_deps_any="aarch64 arm"
2501 vfpv3_deps="vfp"
2502 setend_deps="arm"
2503
2504 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2505
2506 altivec_deps="ppc"
2507 dcbzl_deps="ppc"
2508 ldbrx_deps="ppc"
2509 ppc4xx_deps="ppc"
2510 vsx_deps="altivec"
2511 power8_deps="vsx"
2512
2513 loongson2_deps="mips"
2514 loongson3_deps="mips"
2515 mips32r2_deps="mips"
2516 mips32r5_deps="mips"
2517 mips32r6_deps="mips"
2518 mips64r2_deps="mips"
2519 mips64r6_deps="mips"
2520 mipsfpu_deps="mips"
2521 mipsdsp_deps="mips"
2522 mipsdspr2_deps="mips"
2523 mmi_deps="mips"
2524 msa_deps="mipsfpu"
2525
2526 cpunop_deps="i686"
2527 x86_64_select="i686"
2528 x86_64_suggest="fast_cmov"
2529
2530 amd3dnow_deps="mmx"
2531 amd3dnowext_deps="amd3dnow"
2532 i686_deps="x86"
2533 mmx_deps="x86"
2534 mmxext_deps="mmx"
2535 sse_deps="mmxext"
2536 sse2_deps="sse"
2537 sse3_deps="sse2"
2538 ssse3_deps="sse3"
2539 sse4_deps="ssse3"
2540 sse42_deps="sse4"
2541 aesni_deps="sse42"
2542 avx_deps="sse42"
2543 xop_deps="avx"
2544 fma3_deps="avx"
2545 fma4_deps="avx"
2546 avx2_deps="avx"
2547 avx512_deps="avx2"
2548
2549 mmx_external_deps="x86asm"
2550 mmx_inline_deps="inline_asm x86"
2551 mmx_suggest="mmx_external mmx_inline"
2552
2553 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2554     eval dep=\$${ext}_deps
2555     eval ${ext}_external_deps='"${dep}_external"'
2556     eval ${ext}_inline_deps='"${dep}_inline"'
2557     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2558 done
2559
2560 aligned_stack_if_any="aarch64 ppc x86"
2561 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2562 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2563 fast_unaligned_if_any="aarch64 ppc x86"
2564 simd_align_16_if_any="altivec neon sse"
2565 simd_align_32_if_any="avx"
2566 simd_align_64_if_any="avx512"
2567
2568 # system capabilities
2569 linux_perf_deps="linux_perf_event_h"
2570 symver_if_any="symver_asm_label symver_gnu_asm"
2571 valgrind_backtrace_conflict="optimizations"
2572 valgrind_backtrace_deps="valgrind_valgrind_h"
2573
2574 # threading support
2575 atomics_gcc_if="sync_val_compare_and_swap"
2576 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2577 atomics_win32_if="MemoryBarrier"
2578 atomics_native_if_any="$ATOMICS_LIST"
2579 w32threads_deps="atomics_native"
2580 threads_if_any="$THREADS_LIST"
2581
2582 # subsystems
2583 cbs_av1_select="cbs"
2584 cbs_h264_select="cbs golomb"
2585 cbs_h265_select="cbs golomb"
2586 cbs_jpeg_select="cbs"
2587 cbs_mpeg2_select="cbs"
2588 cbs_vp9_select="cbs"
2589 dct_select="rdft"
2590 dirac_parse_select="golomb"
2591 dnn_suggest="libtensorflow"
2592 error_resilience_select="me_cmp"
2593 faandct_deps="faan"
2594 faandct_select="fdctdsp"
2595 faanidct_deps="faan"
2596 faanidct_select="idctdsp"
2597 h264dsp_select="startcode"
2598 hevcparse_select="golomb"
2599 frame_thread_encoder_deps="encoders threads"
2600 intrax8_select="blockdsp idctdsp"
2601 mdct_select="fft"
2602 mdct15_select="fft"
2603 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2604 mpeg_er_select="error_resilience"
2605 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2606 mpegaudiodsp_select="dct"
2607 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2608 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2609 vc1dsp_select="h264chroma qpeldsp startcode"
2610 rdft_select="fft"
2611
2612 # decoders / encoders
2613 aac_decoder_select="adts_header mdct15 mdct sinewin"
2614 aac_fixed_decoder_select="adts_header mdct sinewin"
2615 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2616 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2617 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2618 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2619 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2620 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2621 adpcm_g722_decoder_select="g722dsp"
2622 adpcm_g722_encoder_select="g722dsp"
2623 aic_decoder_select="golomb idctdsp"
2624 alac_encoder_select="lpc"
2625 als_decoder_select="bswapdsp"
2626 amrnb_decoder_select="lsp"
2627 amrwb_decoder_select="lsp"
2628 amv_decoder_select="sp5x_decoder exif"
2629 amv_encoder_select="jpegtables mpegvideoenc"
2630 ape_decoder_select="bswapdsp llauddsp"
2631 apng_decoder_deps="zlib"
2632 apng_encoder_deps="zlib"
2633 apng_encoder_select="llvidencdsp"
2634 aptx_decoder_select="audio_frame_queue"
2635 aptx_encoder_select="audio_frame_queue"
2636 aptx_hd_decoder_select="audio_frame_queue"
2637 aptx_hd_encoder_select="audio_frame_queue"
2638 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2639 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2640 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2641 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2642 atrac1_decoder_select="mdct sinewin"
2643 atrac3_decoder_select="mdct"
2644 atrac3p_decoder_select="mdct sinewin"
2645 atrac9_decoder_select="mdct"
2646 avrn_decoder_select="exif jpegtables"
2647 bink_decoder_select="blockdsp hpeldsp"
2648 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2649 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2650 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2651 clearvideo_decoder_select="idctdsp"
2652 cllc_decoder_select="bswapdsp"
2653 comfortnoise_encoder_select="lpc"
2654 cook_decoder_select="audiodsp mdct sinewin"
2655 cscd_decoder_select="lzo"
2656 cscd_decoder_suggest="zlib"
2657 dca_decoder_select="mdct"
2658 dds_decoder_select="texturedsp"
2659 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2660 dnxhd_decoder_select="blockdsp idctdsp"
2661 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2662 dolby_e_decoder_select="mdct"
2663 dvvideo_decoder_select="dvprofile idctdsp"
2664 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2665 dxa_decoder_deps="zlib"
2666 dxv_decoder_select="lzf texturedsp"
2667 eac3_decoder_select="ac3_decoder"
2668 eac3_encoder_select="ac3_encoder"
2669 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2670 eatgq_decoder_select="aandcttables"
2671 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2672 exr_decoder_deps="zlib"
2673 ffv1_decoder_select="rangecoder"
2674 ffv1_encoder_select="rangecoder"
2675 ffvhuff_decoder_select="huffyuv_decoder"
2676 ffvhuff_encoder_select="huffyuv_encoder"
2677 fic_decoder_select="golomb"
2678 flac_decoder_select="flacdsp"
2679 flac_encoder_select="bswapdsp flacdsp lpc"
2680 flashsv2_decoder_deps="zlib"
2681 flashsv2_encoder_deps="zlib"
2682 flashsv_decoder_deps="zlib"
2683 flashsv_encoder_deps="zlib"
2684 flv_decoder_select="h263_decoder"
2685 flv_encoder_select="h263_encoder"
2686 fourxm_decoder_select="blockdsp bswapdsp"
2687 fraps_decoder_select="bswapdsp huffman"
2688 g2m_decoder_deps="zlib"
2689 g2m_decoder_select="blockdsp idctdsp jpegtables"
2690 g729_decoder_select="audiodsp"
2691 h261_decoder_select="mpegvideo"
2692 h261_encoder_select="mpegvideoenc"
2693 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2694 h263_encoder_select="h263dsp mpegvideoenc"
2695 h263i_decoder_select="h263_decoder"
2696 h263p_decoder_select="h263_decoder"
2697 h263p_encoder_select="h263_encoder"
2698 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2699 h264_decoder_suggest="error_resilience"
2700 hap_decoder_select="snappy texturedsp"
2701 hap_encoder_deps="libsnappy"
2702 hap_encoder_select="texturedspenc"
2703 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2704 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2705 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2706 hymt_decoder_select="huffyuv_decoder"
2707 iac_decoder_select="imc_decoder"
2708 imc_decoder_select="bswapdsp fft mdct sinewin"
2709 indeo3_decoder_select="hpeldsp"
2710 indeo4_decoder_select="ividsp"
2711 indeo5_decoder_select="ividsp"
2712 interplay_video_decoder_select="hpeldsp"
2713 jpegls_decoder_select="mjpeg_decoder"
2714 jv_decoder_select="blockdsp"
2715 lagarith_decoder_select="llviddsp"
2716 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2717 magicyuv_decoder_select="llviddsp"
2718 magicyuv_encoder_select="llvidencdsp"
2719 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2720 metasound_decoder_select="lsp mdct sinewin"
2721 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2722 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2723 mjpeg_encoder_select="jpegtables mpegvideoenc"
2724 mjpegb_decoder_select="mjpeg_decoder"
2725 mlp_decoder_select="mlp_parser"
2726 mlp_encoder_select="lpc audio_frame_queue"
2727 motionpixels_decoder_select="bswapdsp"
2728 mp1_decoder_select="mpegaudio"
2729 mp1float_decoder_select="mpegaudio"
2730 mp2_decoder_select="mpegaudio"
2731 mp2float_decoder_select="mpegaudio"
2732 mp3_decoder_select="mpegaudio"
2733 mp3adu_decoder_select="mpegaudio"
2734 mp3adufloat_decoder_select="mpegaudio"
2735 mp3float_decoder_select="mpegaudio"
2736 mp3on4_decoder_select="mpegaudio"
2737 mp3on4float_decoder_select="mpegaudio"
2738 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2739 mpc8_decoder_select="mpegaudiodsp"
2740 mpegvideo_decoder_select="mpegvideo"
2741 mpeg1video_decoder_select="mpegvideo"
2742 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2743 mpeg2video_decoder_select="mpegvideo"
2744 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2745 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2746 mpeg4_encoder_select="h263_encoder"
2747 msa1_decoder_select="mss34dsp"
2748 mscc_decoder_deps="zlib"
2749 msmpeg4v1_decoder_select="h263_decoder"
2750 msmpeg4v2_decoder_select="h263_decoder"
2751 msmpeg4v2_encoder_select="h263_encoder"
2752 msmpeg4v3_decoder_select="h263_decoder"
2753 msmpeg4v3_encoder_select="h263_encoder"
2754 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2755 mts2_decoder_select="mss34dsp"
2756 mwsc_decoder_deps="zlib"
2757 mxpeg_decoder_select="mjpeg_decoder"
2758 nellymoser_decoder_select="mdct sinewin"
2759 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2760 nuv_decoder_select="idctdsp lzo"
2761 on2avc_decoder_select="mdct"
2762 opus_decoder_deps="swresample"
2763 opus_decoder_select="mdct15"
2764 opus_encoder_select="audio_frame_queue mdct15"
2765 png_decoder_deps="zlib"
2766 png_encoder_deps="zlib"
2767 png_encoder_select="llvidencdsp"
2768 prores_decoder_select="blockdsp idctdsp"
2769 prores_encoder_select="fdctdsp"
2770 qcelp_decoder_select="lsp"
2771 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2772 ra_144_decoder_select="audiodsp"
2773 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2774 ralf_decoder_select="golomb"
2775 rasc_decoder_deps="zlib"
2776 rawvideo_decoder_select="bswapdsp"
2777 rscc_decoder_deps="zlib"
2778 rtjpeg_decoder_select="me_cmp"
2779 rv10_decoder_select="h263_decoder"
2780 rv10_encoder_select="h263_encoder"
2781 rv20_decoder_select="h263_decoder"
2782 rv20_encoder_select="h263_encoder"
2783 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2784 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2785 screenpresso_decoder_deps="zlib"
2786 shorten_decoder_select="bswapdsp"
2787 sipr_decoder_select="lsp"
2788 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2789 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2790 sonic_decoder_select="golomb rangecoder"
2791 sonic_encoder_select="golomb rangecoder"
2792 sonic_ls_encoder_select="golomb rangecoder"
2793 sp5x_decoder_select="mjpeg_decoder"
2794 speedhq_decoder_select="mpegvideo"
2795 srgc_decoder_deps="zlib"
2796 svq1_decoder_select="hpeldsp"
2797 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2798 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2799 svq3_decoder_suggest="zlib"
2800 tak_decoder_select="audiodsp"
2801 tdsc_decoder_deps="zlib"
2802 tdsc_decoder_select="mjpeg_decoder"
2803 theora_decoder_select="vp3_decoder"
2804 thp_decoder_select="mjpeg_decoder"
2805 tiff_decoder_suggest="zlib lzma"
2806 tiff_encoder_suggest="zlib"
2807 truehd_decoder_select="mlp_parser"
2808 truehd_encoder_select="lpc audio_frame_queue"
2809 truemotion2_decoder_select="bswapdsp"
2810 truespeech_decoder_select="bswapdsp"
2811 tscc_decoder_deps="zlib"
2812 twinvq_decoder_select="mdct lsp sinewin"
2813 txd_decoder_select="texturedsp"
2814 utvideo_decoder_select="bswapdsp llviddsp"
2815 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2816 vble_decoder_select="llviddsp"
2817 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2818 vc1image_decoder_select="vc1_decoder"
2819 vorbis_decoder_select="mdct"
2820 vorbis_encoder_select="audio_frame_queue mdct"
2821 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2822 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2823 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2824 vp6a_decoder_select="vp6_decoder"
2825 vp6f_decoder_select="vp6_decoder"
2826 vp7_decoder_select="h264pred videodsp vp8dsp"
2827 vp8_decoder_select="h264pred videodsp vp8dsp"
2828 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2829 wcmv_decoder_deps="zlib"
2830 webp_decoder_select="vp8_decoder exif"
2831 wmalossless_decoder_select="llauddsp"
2832 wmapro_decoder_select="mdct sinewin wma_freqs"
2833 wmav1_decoder_select="mdct sinewin wma_freqs"
2834 wmav1_encoder_select="mdct sinewin wma_freqs"
2835 wmav2_decoder_select="mdct sinewin wma_freqs"
2836 wmav2_encoder_select="mdct sinewin wma_freqs"
2837 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2838 wmv1_decoder_select="h263_decoder"
2839 wmv1_encoder_select="h263_encoder"
2840 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2841 wmv2_encoder_select="h263_encoder wmv2dsp"
2842 wmv3_decoder_select="vc1_decoder"
2843 wmv3image_decoder_select="wmv3_decoder"
2844 xma1_decoder_select="wmapro_decoder"
2845 xma2_decoder_select="wmapro_decoder"
2846 zerocodec_decoder_deps="zlib"
2847 zlib_decoder_deps="zlib"
2848 zlib_encoder_deps="zlib"
2849 zmbv_decoder_deps="zlib"
2850 zmbv_encoder_deps="zlib"
2851
2852 # hardware accelerators
2853 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2854 cuda_deps="ffnvcodec"
2855 cuvid_deps="ffnvcodec"
2856 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2857 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2858 ffnvcodec_deps_any="libdl LoadLibrary"
2859 nvdec_deps="ffnvcodec"
2860 vaapi_x11_deps="xlib"
2861 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2862 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2863 xvmc_deps="X11_extensions_XvMClib_h"
2864
2865 h263_vaapi_hwaccel_deps="vaapi"
2866 h263_vaapi_hwaccel_select="h263_decoder"
2867 h263_videotoolbox_hwaccel_deps="videotoolbox"
2868 h263_videotoolbox_hwaccel_select="h263_decoder"
2869 h264_d3d11va_hwaccel_deps="d3d11va"
2870 h264_d3d11va_hwaccel_select="h264_decoder"
2871 h264_d3d11va2_hwaccel_deps="d3d11va"
2872 h264_d3d11va2_hwaccel_select="h264_decoder"
2873 h264_dxva2_hwaccel_deps="dxva2"
2874 h264_dxva2_hwaccel_select="h264_decoder"
2875 h264_nvdec_hwaccel_deps="nvdec"
2876 h264_nvdec_hwaccel_select="h264_decoder"
2877 h264_vaapi_hwaccel_deps="vaapi"
2878 h264_vaapi_hwaccel_select="h264_decoder"
2879 h264_vdpau_hwaccel_deps="vdpau"
2880 h264_vdpau_hwaccel_select="h264_decoder"
2881 h264_videotoolbox_hwaccel_deps="videotoolbox"
2882 h264_videotoolbox_hwaccel_select="h264_decoder"
2883 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2884 hevc_d3d11va_hwaccel_select="hevc_decoder"
2885 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2886 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2887 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2888 hevc_dxva2_hwaccel_select="hevc_decoder"
2889 hevc_nvdec_hwaccel_deps="nvdec"
2890 hevc_nvdec_hwaccel_select="hevc_decoder"
2891 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2892 hevc_vaapi_hwaccel_select="hevc_decoder"
2893 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2894 hevc_vdpau_hwaccel_select="hevc_decoder"
2895 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2896 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2897 mjpeg_nvdec_hwaccel_deps="nvdec"
2898 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2899 mjpeg_vaapi_hwaccel_deps="vaapi"
2900 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2901 mpeg_xvmc_hwaccel_deps="xvmc"
2902 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2903 mpeg1_nvdec_hwaccel_deps="nvdec"
2904 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2905 mpeg1_vdpau_hwaccel_deps="vdpau"
2906 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2907 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2908 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2909 mpeg1_xvmc_hwaccel_deps="xvmc"
2910 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2911 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2912 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2913 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2914 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2915 mpeg2_dxva2_hwaccel_deps="dxva2"
2916 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2917 mpeg2_nvdec_hwaccel_deps="nvdec"
2918 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_vaapi_hwaccel_deps="vaapi"
2920 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_vdpau_hwaccel_deps="vdpau"
2922 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2924 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_xvmc_hwaccel_deps="xvmc"
2926 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2927 mpeg4_nvdec_hwaccel_deps="nvdec"
2928 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2929 mpeg4_vaapi_hwaccel_deps="vaapi"
2930 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2931 mpeg4_vdpau_hwaccel_deps="vdpau"
2932 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2933 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2934 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2935 vc1_d3d11va_hwaccel_deps="d3d11va"
2936 vc1_d3d11va_hwaccel_select="vc1_decoder"
2937 vc1_d3d11va2_hwaccel_deps="d3d11va"
2938 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2939 vc1_dxva2_hwaccel_deps="dxva2"
2940 vc1_dxva2_hwaccel_select="vc1_decoder"
2941 vc1_nvdec_hwaccel_deps="nvdec"
2942 vc1_nvdec_hwaccel_select="vc1_decoder"
2943 vc1_vaapi_hwaccel_deps="vaapi"
2944 vc1_vaapi_hwaccel_select="vc1_decoder"
2945 vc1_vdpau_hwaccel_deps="vdpau"
2946 vc1_vdpau_hwaccel_select="vc1_decoder"
2947 vp8_nvdec_hwaccel_deps="nvdec"
2948 vp8_nvdec_hwaccel_select="vp8_decoder"
2949 vp8_vaapi_hwaccel_deps="vaapi"
2950 vp8_vaapi_hwaccel_select="vp8_decoder"
2951 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2952 vp9_d3d11va_hwaccel_select="vp9_decoder"
2953 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2954 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2955 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2956 vp9_dxva2_hwaccel_select="vp9_decoder"
2957 vp9_nvdec_hwaccel_deps="nvdec"
2958 vp9_nvdec_hwaccel_select="vp9_decoder"
2959 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2960 vp9_vaapi_hwaccel_select="vp9_decoder"
2961 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2962 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2963 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2964 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2965 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2966 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2967
2968 # hardware-accelerated codecs
2969 omx_deps="libdl pthreads"
2970 omx_rpi_select="omx"
2971 qsv_deps="libmfx"
2972 qsvdec_select="qsv"
2973 qsvenc_select="qsv"
2974 qsvvpp_select="qsv"
2975 vaapi_encode_deps="vaapi"
2976 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2977
2978 hwupload_cuda_filter_deps="ffnvcodec"
2979 scale_npp_filter_deps="ffnvcodec libnpp"
2980 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2981 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2982 transpose_npp_filter_deps="ffnvcodec libnpp"
2983
2984 amf_deps_any="libdl LoadLibrary"
2985 nvenc_deps="ffnvcodec"
2986 nvenc_deps_any="libdl LoadLibrary"
2987 nvenc_encoder_deps="nvenc"
2988
2989 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2990 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2991 h264_amf_encoder_deps="amf"
2992 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2993 h264_cuvid_decoder_deps="cuvid"
2994 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2995 h264_mediacodec_decoder_deps="mediacodec"
2996 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2997 h264_mmal_decoder_deps="mmal"
2998 h264_nvenc_encoder_deps="nvenc"
2999 h264_omx_encoder_deps="omx"
3000 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3001 h264_qsv_encoder_select="qsvenc"
3002 h264_rkmpp_decoder_deps="rkmpp"
3003 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3004 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3005 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3006 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3007 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3008 hevc_amf_encoder_deps="amf"
3009 hevc_cuvid_decoder_deps="cuvid"
3010 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3011 hevc_mediacodec_decoder_deps="mediacodec"
3012 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3013 hevc_nvenc_encoder_deps="nvenc"
3014 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3015 hevc_qsv_encoder_select="hevcparse qsvenc"
3016 hevc_rkmpp_decoder_deps="rkmpp"
3017 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3018 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3019 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3020 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3021 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3022 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3023 mjpeg_cuvid_decoder_deps="cuvid"
3024 mjpeg_qsv_encoder_deps="libmfx"
3025 mjpeg_qsv_encoder_select="qsvenc"
3026 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3027 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3028 mpeg1_cuvid_decoder_deps="cuvid"
3029 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3030 mpeg2_crystalhd_decoder_select="crystalhd"
3031 mpeg2_cuvid_decoder_deps="cuvid"
3032 mpeg2_mmal_decoder_deps="mmal"
3033 mpeg2_mediacodec_decoder_deps="mediacodec"
3034 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3035 mpeg2_qsv_encoder_select="qsvenc"
3036 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3037 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3038 mpeg4_crystalhd_decoder_select="crystalhd"
3039 mpeg4_cuvid_decoder_deps="cuvid"
3040 mpeg4_mediacodec_decoder_deps="mediacodec"
3041 mpeg4_mmal_decoder_deps="mmal"
3042 mpeg4_omx_encoder_deps="omx"
3043 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3044 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3045 msmpeg4_crystalhd_decoder_select="crystalhd"
3046 nvenc_h264_encoder_select="h264_nvenc_encoder"
3047 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3048 vc1_crystalhd_decoder_select="crystalhd"
3049 vc1_cuvid_decoder_deps="cuvid"
3050 vc1_mmal_decoder_deps="mmal"
3051 vc1_qsv_decoder_select="qsvdec vc1_parser"
3052 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3053 vp8_cuvid_decoder_deps="cuvid"
3054 vp8_mediacodec_decoder_deps="mediacodec"
3055 vp8_qsv_decoder_select="qsvdec vp8_parser"
3056 vp8_rkmpp_decoder_deps="rkmpp"
3057 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3058 vp8_vaapi_encoder_select="vaapi_encode"
3059 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3060 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3061 vp9_cuvid_decoder_deps="cuvid"
3062 vp9_mediacodec_decoder_deps="mediacodec"
3063 vp9_rkmpp_decoder_deps="rkmpp"
3064 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3065 vp9_vaapi_encoder_select="vaapi_encode"
3066 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3067 wmv3_crystalhd_decoder_select="crystalhd"
3068
3069 # parsers
3070 aac_parser_select="adts_header"
3071 av1_parser_select="cbs_av1"
3072 h264_parser_select="golomb h264dsp h264parse"
3073 hevc_parser_select="hevcparse"
3074 mpegaudio_parser_select="mpegaudioheader"
3075 mpegvideo_parser_select="mpegvideo"
3076 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3077 vc1_parser_select="vc1dsp"
3078
3079 # bitstream_filters
3080 aac_adtstoasc_bsf_select="adts_header"
3081 av1_metadata_bsf_select="cbs_av1"
3082 eac3_core_bsf_select="ac3_parser"
3083 filter_units_bsf_select="cbs"
3084 h264_metadata_bsf_deps="const_nan"
3085 h264_metadata_bsf_select="cbs_h264"
3086 h264_redundant_pps_bsf_select="cbs_h264"
3087 hevc_metadata_bsf_select="cbs_h265"
3088 mjpeg2jpeg_bsf_select="jpegtables"
3089 mpeg2_metadata_bsf_select="cbs_mpeg2"
3090 trace_headers_bsf_select="cbs"
3091 truehd_core_bsf_select="mlp_parser"
3092 vp9_metadata_bsf_select="cbs_vp9"
3093
3094 # external libraries
3095 aac_at_decoder_deps="audiotoolbox"
3096 aac_at_decoder_select="aac_adtstoasc_bsf"
3097 ac3_at_decoder_deps="audiotoolbox"
3098 ac3_at_decoder_select="ac3_parser"
3099 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3100 alac_at_decoder_deps="audiotoolbox"
3101 amr_nb_at_decoder_deps="audiotoolbox"
3102 avisynth_deps_any="libdl LoadLibrary"
3103 avisynth_demuxer_deps="avisynth"
3104 avisynth_demuxer_select="riffdec"
3105 eac3_at_decoder_deps="audiotoolbox"
3106 eac3_at_decoder_select="ac3_parser"
3107 gsm_ms_at_decoder_deps="audiotoolbox"
3108 ilbc_at_decoder_deps="audiotoolbox"
3109 mp1_at_decoder_deps="audiotoolbox"
3110 mp2_at_decoder_deps="audiotoolbox"
3111 mp3_at_decoder_deps="audiotoolbox"
3112 mp1_at_decoder_select="mpegaudioheader"
3113 mp2_at_decoder_select="mpegaudioheader"
3114 mp3_at_decoder_select="mpegaudioheader"
3115 pcm_alaw_at_decoder_deps="audiotoolbox"
3116 pcm_mulaw_at_decoder_deps="audiotoolbox"
3117 qdmc_at_decoder_deps="audiotoolbox"
3118 qdm2_at_decoder_deps="audiotoolbox"
3119 aac_at_encoder_deps="audiotoolbox"
3120 aac_at_encoder_select="audio_frame_queue"
3121 alac_at_encoder_deps="audiotoolbox"
3122 alac_at_encoder_select="audio_frame_queue"
3123 ilbc_at_encoder_deps="audiotoolbox"
3124 ilbc_at_encoder_select="audio_frame_queue"
3125 pcm_alaw_at_encoder_deps="audiotoolbox"
3126 pcm_alaw_at_encoder_select="audio_frame_queue"
3127 pcm_mulaw_at_encoder_deps="audiotoolbox"
3128 pcm_mulaw_at_encoder_select="audio_frame_queue"
3129 chromaprint_muxer_deps="chromaprint"
3130 h264_videotoolbox_encoder_deps="pthreads"
3131 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3132 hevc_videotoolbox_encoder_deps="pthreads"
3133 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3134 libaom_av1_decoder_deps="libaom"
3135 libaom_av1_encoder_deps="libaom"
3136 libaom_av1_encoder_select="extract_extradata_bsf"
3137 libaribb24_decoder_deps="libaribb24"
3138 libcelt_decoder_deps="libcelt"
3139 libcodec2_decoder_deps="libcodec2"
3140 libcodec2_encoder_deps="libcodec2"
3141 libdav1d_decoder_deps="libdav1d"
3142 libdavs2_decoder_deps="libdavs2"
3143 libfdk_aac_decoder_deps="libfdk_aac"
3144 libfdk_aac_encoder_deps="libfdk_aac"
3145 libfdk_aac_encoder_select="audio_frame_queue"
3146 libgme_demuxer_deps="libgme"
3147 libgsm_decoder_deps="libgsm"
3148 libgsm_encoder_deps="libgsm"
3149 libgsm_ms_decoder_deps="libgsm"
3150 libgsm_ms_encoder_deps="libgsm"
3151 libilbc_decoder_deps="libilbc"
3152 libilbc_encoder_deps="libilbc"
3153 libkvazaar_encoder_deps="libkvazaar"
3154 libmodplug_demuxer_deps="libmodplug"
3155 libmp3lame_encoder_deps="libmp3lame"
3156 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3157 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3158 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3159 libopencore_amrnb_encoder_select="audio_frame_queue"
3160 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3161 libopenh264_decoder_deps="libopenh264"
3162 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3163 libopenh264_encoder_deps="libopenh264"
3164 libopenjpeg_decoder_deps="libopenjpeg"
3165 libopenjpeg_encoder_deps="libopenjpeg"
3166 libopenmpt_demuxer_deps="libopenmpt"
3167 libopus_decoder_deps="libopus"
3168 libopus_encoder_deps="libopus"
3169 libopus_encoder_select="audio_frame_queue"
3170 librsvg_decoder_deps="librsvg"
3171 libshine_encoder_deps="libshine"
3172 libshine_encoder_select="audio_frame_queue"
3173 libspeex_decoder_deps="libspeex"
3174 libspeex_encoder_deps="libspeex"
3175 libspeex_encoder_select="audio_frame_queue"
3176 libtheora_encoder_deps="libtheora"
3177 libtwolame_encoder_deps="libtwolame"
3178 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3179 libvorbis_decoder_deps="libvorbis"
3180 libvorbis_encoder_deps="libvorbis libvorbisenc"
3181 libvorbis_encoder_select="audio_frame_queue"
3182 libvpx_vp8_decoder_deps="libvpx"
3183 libvpx_vp8_encoder_deps="libvpx"
3184 libvpx_vp9_decoder_deps="libvpx"
3185 libvpx_vp9_encoder_deps="libvpx"
3186 libwavpack_encoder_deps="libwavpack"
3187 libwavpack_encoder_select="audio_frame_queue"
3188 libwebp_encoder_deps="libwebp"
3189 libwebp_anim_encoder_deps="libwebp"
3190 libx262_encoder_deps="libx262"
3191 libx264_encoder_deps="libx264"
3192 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3193 libx264rgb_encoder_select="libx264_encoder"
3194 libx265_encoder_deps="libx265"
3195 libxavs_encoder_deps="libxavs"
3196 libxavs2_encoder_deps="libxavs2"
3197 libxvid_encoder_deps="libxvid"
3198 libzvbi_teletext_decoder_deps="libzvbi"
3199 vapoursynth_demuxer_deps="vapoursynth"
3200 videotoolbox_suggest="coreservices"
3201 videotoolbox_deps="corefoundation coremedia corevideo"
3202 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3203
3204 # demuxers / muxers
3205 ac3_demuxer_select="ac3_parser"
3206 aiff_muxer_select="iso_media"
3207 asf_demuxer_select="riffdec"
3208 asf_o_demuxer_select="riffdec"
3209 asf_muxer_select="riffenc"
3210 asf_stream_muxer_select="asf_muxer"
3211 avi_demuxer_select="iso_media riffdec exif"
3212 avi_muxer_select="riffenc"
3213 caf_demuxer_select="iso_media riffdec"
3214 caf_muxer_select="iso_media"
3215 dash_muxer_select="mp4_muxer"
3216 dash_demuxer_deps="libxml2"
3217 dirac_demuxer_select="dirac_parser"
3218 dts_demuxer_select="dca_parser"
3219 dtshd_demuxer_select="dca_parser"
3220 dv_demuxer_select="dvprofile"
3221 dv_muxer_select="dvprofile"
3222 dxa_demuxer_select="riffdec"
3223 eac3_demuxer_select="ac3_parser"
3224 f4v_muxer_select="mov_muxer"
3225 fifo_muxer_deps="threads"
3226 flac_demuxer_select="flac_parser"
3227 hds_muxer_select="flv_muxer"
3228 hls_muxer_select="mpegts_muxer"
3229 hls_muxer_suggest="gcrypt openssl"
3230 image2_alias_pix_demuxer_select="image2_demuxer"
3231 image2_brender_pix_demuxer_select="image2_demuxer"
3232 ipod_muxer_select="mov_muxer"
3233 ismv_muxer_select="mov_muxer"
3234 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3235 matroska_audio_muxer_select="matroska_muxer"
3236 matroska_demuxer_select="iso_media riffdec"
3237 matroska_demuxer_suggest="bzlib lzo zlib"
3238 matroska_muxer_select="iso_media riffenc"
3239 mmf_muxer_select="riffenc"
3240 mov_demuxer_select="iso_media riffdec"
3241 mov_demuxer_suggest="zlib"
3242 mov_muxer_select="iso_media riffenc rtpenc_chain"
3243 mp3_demuxer_select="mpegaudio_parser"
3244 mp3_muxer_select="mpegaudioheader"
3245 mp4_muxer_select="mov_muxer"
3246 mpegts_demuxer_select="iso_media"
3247 mpegts_muxer_select="adts_muxer latm_muxer"
3248 mpegtsraw_demuxer_select="mpegts_demuxer"
3249 mxf_d10_muxer_select="mxf_muxer"
3250 mxf_opatom_muxer_select="mxf_muxer"
3251 nut_muxer_select="riffenc"
3252 nuv_demuxer_select="riffdec"
3253 oga_muxer_select="ogg_muxer"
3254 ogg_demuxer_select="dirac_parse"
3255 ogv_muxer_select="ogg_muxer"
3256 opus_muxer_select="ogg_muxer"
3257 psp_muxer_select="mov_muxer"
3258 rtp_demuxer_select="sdp_demuxer"
3259 rtp_muxer_select="golomb"
3260 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3261 rtsp_demuxer_select="http_protocol rtpdec"
3262 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3263 sap_demuxer_select="sdp_demuxer"
3264 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3265 sdp_demuxer_select="rtpdec"
3266 smoothstreaming_muxer_select="ismv_muxer"
3267 spdif_demuxer_select="adts_header"
3268 spdif_muxer_select="adts_header"
3269 spx_muxer_select="ogg_muxer"
3270 swf_demuxer_suggest="zlib"
3271 tak_demuxer_select="tak_parser"
3272 tg2_muxer_select="mov_muxer"
3273 tgp_muxer_select="mov_muxer"
3274 vobsub_demuxer_select="mpegps_demuxer"
3275 w64_demuxer_select="wav_demuxer"
3276 w64_muxer_select="wav_muxer"
3277 wav_demuxer_select="riffdec"
3278 wav_muxer_select="riffenc"
3279 webm_muxer_select="iso_media riffenc"
3280 webm_dash_manifest_demuxer_select="matroska_demuxer"
3281 wtv_demuxer_select="mpegts_demuxer riffdec"
3282 wtv_muxer_select="mpegts_muxer riffenc"
3283 xmv_demuxer_select="riffdec"
3284 xwma_demuxer_select="riffdec"
3285
3286 # indevs / outdevs
3287 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3288 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3289 alsa_indev_deps="alsa"
3290 alsa_outdev_deps="alsa"
3291 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3292 avfoundation_indev_suggest="coregraphics applicationservices"
3293 avfoundation_indev_extralibs="-framework Foundation"
3294 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3295 caca_outdev_deps="libcaca"
3296 decklink_deps_any="libdl LoadLibrary"
3297 decklink_indev_deps="decklink threads"
3298 decklink_indev_extralibs="-lstdc++"
3299 decklink_outdev_deps="decklink threads"
3300 decklink_outdev_suggest="libklvanc"
3301 decklink_outdev_extralibs="-lstdc++"
3302 libndi_newtek_indev_deps="libndi_newtek"
3303 libndi_newtek_indev_extralibs="-lndi"
3304 libndi_newtek_outdev_deps="libndi_newtek"
3305 libndi_newtek_outdev_extralibs="-lndi"
3306 dshow_indev_deps="IBaseFilter"
3307 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3308 fbdev_indev_deps="linux_fb_h"
3309 fbdev_outdev_deps="linux_fb_h"
3310 gdigrab_indev_deps="CreateDIBSection"
3311 gdigrab_indev_extralibs="-lgdi32"
3312 gdigrab_indev_select="bmp_decoder"
3313 iec61883_indev_deps="libiec61883"
3314 jack_indev_deps="libjack"
3315 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3316 kmsgrab_indev_deps="libdrm"
3317 lavfi_indev_deps="avfilter"
3318 libcdio_indev_deps="libcdio"
3319 libdc1394_indev_deps="libdc1394"
3320 openal_indev_deps="openal"
3321 opengl_outdev_deps="opengl"
3322 opengl_outdev_suggest="sdl2"
3323 oss_indev_deps_any="sys_soundcard_h"
3324 oss_outdev_deps_any="sys_soundcard_h"
3325 pulse_indev_deps="libpulse"
3326 pulse_outdev_deps="libpulse"
3327 sdl2_outdev_deps="sdl2"
3328 sndio_indev_deps="sndio"
3329 sndio_outdev_deps="sndio"
3330 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3331 v4l2_indev_suggest="libv4l2"
3332 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3333 v4l2_outdev_suggest="libv4l2"
3334 vfwcap_indev_deps="vfw32 vfwcap_defines"
3335 xcbgrab_indev_deps="libxcb"
3336 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3337 xv_outdev_deps="xlib"
3338
3339 # protocols
3340 async_protocol_deps="threads"
3341 bluray_protocol_deps="libbluray"
3342 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3343 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3344 ffrtmpcrypt_protocol_select="tcp_protocol"
3345 ffrtmphttp_protocol_conflict="librtmp_protocol"
3346 ffrtmphttp_protocol_select="http_protocol"
3347 ftp_protocol_select="tcp_protocol"
3348 gopher_protocol_select="network"
3349 http_protocol_select="tcp_protocol"
3350 http_protocol_suggest="zlib"
3351 httpproxy_protocol_select="tcp_protocol"
3352 httpproxy_protocol_suggest="zlib"
3353 https_protocol_select="tls_protocol"
3354 https_protocol_suggest="zlib"
3355 icecast_protocol_select="http_protocol"
3356 mmsh_protocol_select="http_protocol"
3357 mmst_protocol_select="network"
3358 rtmp_protocol_conflict="librtmp_protocol"
3359 rtmp_protocol_select="tcp_protocol"
3360 rtmp_protocol_suggest="zlib"
3361 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3362 rtmpe_protocol_suggest="zlib"
3363 rtmps_protocol_conflict="librtmp_protocol"
3364 rtmps_protocol_select="tls_protocol"
3365 rtmps_protocol_suggest="zlib"
3366 rtmpt_protocol_select="ffrtmphttp_protocol"
3367 rtmpt_protocol_suggest="zlib"
3368 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3369 rtmpte_protocol_suggest="zlib"
3370 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3371 rtmpts_protocol_suggest="zlib"
3372 rtp_protocol_select="udp_protocol"
3373 schannel_conflict="openssl gnutls libtls mbedtls"
3374 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3375 sctp_protocol_select="network"
3376 securetransport_conflict="openssl gnutls libtls mbedtls"
3377 srtp_protocol_select="rtp_protocol srtp"
3378 tcp_protocol_select="network"
3379 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3380 tls_protocol_select="tcp_protocol"
3381 udp_protocol_select="network"
3382 udplite_protocol_select="network"
3383 unix_protocol_deps="sys_un_h"
3384 unix_protocol_select="network"
3385
3386 # external library protocols
3387 librtmp_protocol_deps="librtmp"
3388 librtmpe_protocol_deps="librtmp"
3389 librtmps_protocol_deps="librtmp"
3390 librtmpt_protocol_deps="librtmp"
3391 librtmpte_protocol_deps="librtmp"
3392 libsmbclient_protocol_deps="libsmbclient gplv3"
3393 libsrt_protocol_deps="libsrt"
3394 libsrt_protocol_select="network"
3395 libssh_protocol_deps="libssh"
3396 libtls_conflict="openssl gnutls mbedtls"
3397
3398 # filters
3399 afftdn_filter_deps="avcodec"
3400 afftdn_filter_select="fft"
3401 afftfilt_filter_deps="avcodec"
3402 afftfilt_filter_select="fft"
3403 afir_filter_deps="avcodec"
3404 afir_filter_select="fft"
3405 amovie_filter_deps="avcodec avformat"
3406 aresample_filter_deps="swresample"
3407 ass_filter_deps="libass"
3408 atempo_filter_deps="avcodec"
3409 atempo_filter_select="rdft"
3410 avgblur_opencl_filter_deps="opencl"
3411 azmq_filter_deps="libzmq"
3412 blackframe_filter_deps="gpl"
3413 bm3d_filter_deps="avcodec"
3414 bm3d_filter_select="dct"
3415 boxblur_filter_deps="gpl"
3416 boxblur_opencl_filter_deps="opencl gpl"
3417 bs2b_filter_deps="libbs2b"
3418 colormatrix_filter_deps="gpl"
3419 convolution_opencl_filter_deps="opencl"
3420 convolve_filter_deps="avcodec"
3421 convolve_filter_select="fft"
3422 coreimage_filter_deps="coreimage appkit"
3423 coreimage_filter_extralibs="-framework OpenGL"
3424 coreimagesrc_filter_deps="coreimage appkit"
3425 coreimagesrc_filter_extralibs="-framework OpenGL"
3426 cover_rect_filter_deps="avcodec avformat gpl"
3427 cropdetect_filter_deps="gpl"
3428 deconvolve_filter_deps="avcodec"
3429 deconvolve_filter_select="fft"
3430 deinterlace_qsv_filter_deps="libmfx"
3431 deinterlace_vaapi_filter_deps="vaapi"
3432 delogo_filter_deps="gpl"
3433 denoise_vaapi_filter_deps="vaapi"
3434 deshake_filter_select="pixelutils"
3435 dilation_opencl_filter_deps="opencl"
3436 drawtext_filter_deps="libfreetype"
3437 drawtext_filter_suggest="libfontconfig libfribidi"
3438 elbg_filter_deps="avcodec"
3439 eq_filter_deps="gpl"
3440 erosion_opencl_filter_deps="opencl"
3441 fftfilt_filter_deps="avcodec"
3442 fftfilt_filter_select="rdft"
3443 fftdnoiz_filter_deps="avcodec"
3444 fftdnoiz_filter_select="fft"
3445 find_rect_filter_deps="avcodec avformat gpl"
3446 firequalizer_filter_deps="avcodec"
3447 firequalizer_filter_select="rdft"
3448 flite_filter_deps="libflite"
3449 framerate_filter_select="scene_sad"
3450 freezedetect_filter_select="scene_sad"
3451 frei0r_filter_deps="frei0r libdl"
3452 frei0r_src_filter_deps="frei0r libdl"
3453 fspp_filter_deps="gpl"
3454 geq_filter_deps="gpl"
3455 histeq_filter_deps="gpl"
3456 hqdn3d_filter_deps="gpl"
3457 interlace_filter_deps="gpl"
3458 kerndeint_filter_deps="gpl"
3459 ladspa_filter_deps="ladspa libdl"
3460 lensfun_filter_deps="liblensfun version3"
3461 lv2_filter_deps="lv2"
3462 mcdeint_filter_deps="avcodec gpl"
3463 movie_filter_deps="avcodec avformat"
3464 mpdecimate_filter_deps="gpl"
3465 mpdecimate_filter_select="pixelutils"
3466 minterpolate_filter_select="scene_sad"
3467 mptestsrc_filter_deps="gpl"
3468 negate_filter_deps="lut_filter"
3469 nnedi_filter_deps="gpl"
3470 ocr_filter_deps="libtesseract"
3471 ocv_filter_deps="libopencv"
3472 openclsrc_filter_deps="opencl"
3473 overlay_opencl_filter_deps="opencl"
3474 overlay_qsv_filter_deps="libmfx"
3475 overlay_qsv_filter_select="qsvvpp"
3476 owdenoise_filter_deps="gpl"
3477 pan_filter_deps="swresample"
3478 perspective_filter_deps="gpl"
3479 phase_filter_deps="gpl"
3480 pp7_filter_deps="gpl"
3481 pp_filter_deps="gpl postproc"
3482 prewitt_opencl_filter_deps="opencl"
3483 procamp_vaapi_filter_deps="vaapi"
3484 program_opencl_filter_deps="opencl"
3485 pullup_filter_deps="gpl"
3486 removelogo_filter_deps="avcodec avformat swscale"
3487 repeatfields_filter_deps="gpl"
3488 resample_filter_deps="avresample"
3489 roberts_opencl_filter_deps="opencl"
3490 rubberband_filter_deps="librubberband"
3491 sab_filter_deps="gpl swscale"
3492 scale2ref_filter_deps="swscale"
3493 scale_filter_deps="swscale"
3494 scale_qsv_filter_deps="libmfx"
3495 select_filter_select="scene_sad"
3496 sharpness_vaapi_filter_deps="vaapi"
3497 showcqt_filter_deps="avcodec avformat swscale"
3498 showcqt_filter_suggest="libfontconfig libfreetype"
3499 showcqt_filter_select="fft"
3500 showfreqs_filter_deps="avcodec"
3501 showfreqs_filter_select="fft"
3502 showspectrum_filter_deps="avcodec"
3503 showspectrum_filter_select="fft"
3504 showspectrumpic_filter_deps="avcodec"
3505 showspectrumpic_filter_select="fft"
3506 signature_filter_deps="gpl avcodec avformat"
3507 smartblur_filter_deps="gpl swscale"
3508 sobel_opencl_filter_deps="opencl"
3509 sofalizer_filter_deps="libmysofa avcodec"
3510 sofalizer_filter_select="fft"
3511 spectrumsynth_filter_deps="avcodec"
3512 spectrumsynth_filter_select="fft"
3513 spp_filter_deps="gpl avcodec"
3514 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3515 sr_filter_deps="avformat swscale"
3516 sr_filter_select="dnn"
3517 stereo3d_filter_deps="gpl"
3518 subtitles_filter_deps="avformat avcodec libass"
3519 super2xsai_filter_deps="gpl"
3520 pixfmts_super2xsai_test_deps="super2xsai_filter"
3521 tinterlace_filter_deps="gpl"
3522 tinterlace_merge_test_deps="tinterlace_filter"
3523 tinterlace_pad_test_deps="tinterlace_filter"
3524 tonemap_filter_deps="const_nan"
3525 tonemap_opencl_filter_deps="opencl const_nan"
3526 transpose_opencl_filter_deps="opencl"
3527 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3528 unsharp_opencl_filter_deps="opencl"
3529 uspp_filter_deps="gpl avcodec"
3530 vaguedenoiser_filter_deps="gpl"
3531 vidstabdetect_filter_deps="libvidstab"
3532 vidstabtransform_filter_deps="libvidstab"
3533 libvmaf_filter_deps="libvmaf pthreads"
3534 zmq_filter_deps="libzmq"
3535 zoompan_filter_deps="swscale"
3536 zscale_filter_deps="libzimg const_nan"
3537 scale_vaapi_filter_deps="vaapi"
3538 vpp_qsv_filter_deps="libmfx"
3539 vpp_qsv_filter_select="qsvvpp"
3540 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3541
3542 # examples
3543 avio_dir_cmd_deps="avformat avutil"
3544 avio_reading_deps="avformat avcodec avutil"
3545 decode_audio_example_deps="avcodec avutil"
3546 decode_video_example_deps="avcodec avutil"
3547 demuxing_decoding_example_deps="avcodec avformat avutil"
3548 encode_audio_example_deps="avcodec avutil"
3549 encode_video_example_deps="avcodec avutil"
3550 extract_mvs_example_deps="avcodec avformat avutil"
3551 filter_audio_example_deps="avfilter avutil"
3552 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3553 filtering_video_example_deps="avfilter avcodec avformat avutil"
3554 http_multiclient_example_deps="avformat avutil fork"
3555 hw_decode_example_deps="avcodec avformat avutil"
3556 metadata_example_deps="avformat avutil"
3557 muxing_example_deps="avcodec avformat avutil swscale"
3558 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3559 remuxing_example_deps="avcodec avformat avutil"
3560 resampling_audio_example_deps="avutil swresample"
3561 scaling_video_example_deps="avutil swscale"
3562 transcode_aac_example_deps="avcodec avformat swresample"
3563 transcoding_example_deps="avfilter avcodec avformat avutil"
3564 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3565 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3566
3567 # EXTRALIBS_LIST
3568 cpu_init_extralibs="pthreads_extralibs"
3569 cws2fws_extralibs="zlib_extralibs"
3570
3571 # libraries, in any order
3572 avcodec_deps="avutil"
3573 avcodec_suggest="libm"
3574 avcodec_select="null_bsf"
3575 avdevice_deps="avformat avcodec avutil"
3576 avdevice_suggest="libm"
3577 avfilter_deps="avutil"
3578 avfilter_suggest="libm"
3579 avformat_deps="avcodec avutil"
3580 avformat_suggest="libm network zlib"
3581 avresample_deps="avutil"
3582 avresample_suggest="libm"
3583 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3584 postproc_deps="avutil gpl"
3585 postproc_suggest="libm"
3586 swresample_deps="avutil"
3587 swresample_suggest="libm libsoxr"
3588 swscale_deps="avutil"
3589 swscale_suggest="libm"
3590
3591 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3592 avfilter_extralibs="pthreads_extralibs"
3593 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3594
3595 # programs
3596 ffmpeg_deps="avcodec avfilter avformat"
3597 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3598                hflip_filter null_filter
3599                transpose_filter trim_filter vflip_filter"
3600 ffmpeg_suggest="ole32 psapi shell32"
3601 ffplay_deps="avcodec avformat swscale swresample sdl2"
3602 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3603 ffplay_suggest="shell32"
3604 ffprobe_deps="avcodec avformat"
3605 ffprobe_suggest="shell32"
3606
3607 # documentation
3608 podpages_deps="perl"
3609 manpages_deps="perl pod2man"
3610 htmlpages_deps="perl"
3611 htmlpages_deps_any="makeinfo_html texi2html"
3612 txtpages_deps="perl makeinfo"
3613 doc_deps_any="manpages htmlpages podpages txtpages"
3614
3615 # default parameters
3616
3617 logfile="ffbuild/config.log"
3618
3619 # installation paths
3620 prefix_default="/usr/local"
3621 bindir_default='${prefix}/bin'
3622 datadir_default='${prefix}/share/ffmpeg'
3623 docdir_default='${prefix}/share/doc/ffmpeg'
3624 incdir_default='${prefix}/include'
3625 libdir_default='${prefix}/lib'
3626 mandir_default='${prefix}/share/man'
3627
3628 # toolchain
3629 ar_default="ar"
3630 cc_default="gcc"
3631 cxx_default="g++"
3632 host_cc_default="gcc"
3633 doxygen_default="doxygen"
3634 install="install"
3635 ln_s_default="ln -s -f"
3636 nm_default="nm -g"
3637 pkg_config_default=pkg-config
3638 ranlib_default="ranlib"
3639 strip_default="strip"
3640 version_script='--version-script'
3641 objformat="elf32"
3642 x86asmexe_default="nasm"
3643 windres_default="windres"
3644 nvcc_default="nvcc"
3645 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3646 striptype="direct"
3647
3648 # OS
3649 target_os_default=$(tolower $(uname -s))
3650 host_os=$target_os_default
3651
3652 # machine
3653 if test "$target_os_default" = aix; then
3654     arch_default=$(uname -p)
3655     strip_default="strip -X32_64"
3656     nm_default="nm -g -X32_64"
3657 else
3658     arch_default=$(uname -m)
3659 fi
3660 cpu="generic"
3661 intrinsics="none"
3662
3663 # configurable options
3664 enable $PROGRAM_LIST
3665 enable $DOCUMENT_LIST
3666 enable $EXAMPLE_LIST
3667 enable $(filter_out avresample $LIBRARY_LIST)
3668 enable stripping
3669
3670 enable asm
3671 enable debug
3672 enable doc
3673 enable faan faandct faanidct
3674 enable optimizations
3675 enable runtime_cpudetect
3676 enable safe_bitstream_reader
3677 enable static
3678 enable swscale_alpha
3679 enable valgrind_backtrace
3680
3681 sws_max_filter_size_default=256
3682 set_default sws_max_filter_size
3683
3684 # internal components are enabled by default
3685 enable $EXTRALIBS_LIST
3686
3687 # Avoid external, non-system, libraries getting enabled by dependency resolution
3688 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3689
3690 # build settings
3691 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3692 LIBPREF="lib"
3693 LIBSUF=".a"
3694 FULLNAME='$(NAME)$(BUILDSUF)'
3695 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3696 SLIBPREF="lib"
3697 SLIBSUF=".so"
3698 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3699 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3700 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3701 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3702 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3703 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3704 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3705
3706 asflags_filter=echo
3707 cflags_filter=echo
3708 ldflags_filter=echo
3709
3710 AS_C='-c'
3711 AS_O='-o $@'
3712 CC_C='-c'
3713 CC_E='-E -o $@'
3714 CC_O='-o $@'
3715 CXX_C='-c'
3716 CXX_O='-o $@'
3717 OBJCC_C='-c'
3718 OBJCC_E='-E -o $@'
3719 OBJCC_O='-o $@'
3720 X86ASM_O='-o $@'
3721 LD_O='-o $@'
3722 LD_LIB='-l%'
3723 LD_PATH='-L'
3724 HOSTCC_C='-c'
3725 HOSTCC_E='-E -o $@'
3726 HOSTCC_O='-o $@'
3727 HOSTLD_O='-o $@'
3728 NVCC_C='-c'
3729 NVCC_O='-o $@'
3730
3731 host_extralibs='-lm'
3732 host_cflags_filter=echo
3733 host_ldflags_filter=echo
3734
3735 target_path='$(CURDIR)'
3736
3737 # since the object filename is not given with the -MM flag, the compiler
3738 # is only able to print the basename, and we must add the path ourselves
3739 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3740 DEPFLAGS='-MM'
3741
3742 mkdir -p ffbuild
3743
3744 # find source path
3745 if test -f configure; then
3746     source_path=.
3747 else
3748     source_path=$(cd $(dirname "$0"); pwd)
3749     case "$source_path" in
3750         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3751     esac
3752     test -e "$source_path/config.h" &&
3753         die "Out of tree builds are impossible with config.h in source dir."
3754 fi
3755
3756 for v in "$@"; do
3757     r=${v#*=}
3758     l=${v%"$r"}
3759     r=$(sh_quote "$r")
3760     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3761 done
3762
3763 find_things_extern(){
3764     thing=$1
3765     pattern=$2
3766     file=$source_path/$3
3767     out=${4:-$thing}
3768     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3769 }
3770
3771 find_filters_extern(){
3772     file=$source_path/$1
3773     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3774 }
3775
3776 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3777 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3778 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3779 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3780 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3781 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3782 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3783 CODEC_LIST="
3784     $ENCODER_LIST
3785     $DECODER_LIST
3786 "
3787 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3788 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3789 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3790 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3791
3792 AVCODEC_COMPONENTS_LIST="
3793     $BSF_LIST
3794     $DECODER_LIST
3795     $ENCODER_LIST
3796     $HWACCEL_LIST
3797     $PARSER_LIST
3798 "
3799
3800 AVDEVICE_COMPONENTS_LIST="
3801     $INDEV_LIST
3802     $OUTDEV_LIST
3803 "
3804
3805 AVFILTER_COMPONENTS_LIST="
3806     $FILTER_LIST
3807 "
3808
3809 AVFORMAT_COMPONENTS_LIST="
3810     $DEMUXER_LIST
3811     $MUXER_LIST
3812     $PROTOCOL_LIST
3813 "
3814
3815 ALL_COMPONENTS="
3816     $AVCODEC_COMPONENTS_LIST
3817     $AVDEVICE_COMPONENTS_LIST
3818     $AVFILTER_COMPONENTS_LIST
3819     $AVFORMAT_COMPONENTS_LIST
3820 "
3821
3822 for n in $COMPONENT_LIST; do
3823     v=$(toupper ${n%s})_LIST
3824     eval enable \$$v
3825     eval ${n}_if_any="\$$v"
3826 done
3827
3828 enable $ARCH_EXT_LIST
3829
3830 die_unknown(){
3831     echo "Unknown option \"$1\"."
3832     echo "See $0 --help for available options."
3833     exit 1
3834 }
3835
3836 print_in_columns() {
3837     cols=$(expr $ncols / 24)
3838     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3839 }
3840
3841 show_list() {
3842     suffix=_$1
3843     shift
3844     echo $* | sed s/$suffix//g | print_in_columns
3845     exit 0
3846 }
3847
3848 rand_list(){
3849     IFS=', '
3850     set -- $*
3851     unset IFS
3852     for thing; do
3853         comp=${thing%:*}
3854         prob=${thing#$comp}
3855         prob=${prob#:}
3856         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3857         echo "prob ${prob:-0.5}"
3858         printf '%s\n' $comp
3859     done
3860 }
3861
3862 do_random(){
3863     action=$1
3864     shift
3865     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3866     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3867 }
3868
3869 for opt do
3870     optval="${opt#*=}"
3871     case "$opt" in
3872         --extra-ldflags=*)
3873             add_ldflags $optval
3874         ;;
3875         --extra-ldexeflags=*)
3876             add_ldexeflags $optval
3877         ;;
3878         --extra-ldsoflags=*)
3879             add_ldsoflags $optval
3880         ;;
3881         --extra-ldlibflags=*)
3882             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3883                  "removed in the future. Use --extra-ldsoflags instead."
3884             add_ldsoflags $optval
3885         ;;
3886         --extra-libs=*)
3887             add_extralibs $optval
3888         ;;
3889         --disable-devices)
3890             disable $INDEV_LIST $OUTDEV_LIST
3891         ;;
3892         --enable-debug=*)
3893             debuglevel="$optval"
3894         ;;
3895         --disable-programs)
3896             disable $PROGRAM_LIST
3897         ;;
3898         --disable-everything)
3899             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3900         ;;
3901         --disable-all)
3902             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3903             disable $LIBRARY_LIST $PROGRAM_LIST doc
3904             enable avutil
3905         ;;
3906         --enable-random|--disable-random)
3907             action=${opt%%-random}
3908             do_random ${action#--} $COMPONENT_LIST
3909         ;;
3910         --enable-random=*|--disable-random=*)
3911             action=${opt%%-random=*}
3912             do_random ${action#--} $optval
3913         ;;
3914         --enable-sdl)
3915             enable sdl2
3916         ;;
3917         --enable-*=*|--disable-*=*)
3918             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3919             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3920             eval list=\$$(toupper $thing)_LIST
3921             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3922             list=$(filter "$name" $list)
3923             [ "$list" = "" ] && warn "Option $opt did not match anything"
3924             test $action = enable && warn_if_gets_disabled $list
3925             $action $list
3926         ;;
3927         --enable-yasm|--disable-yasm)
3928             warn "The ${opt} option is only provided for compatibility and will be\n"\
3929                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3930             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3931         ;;
3932         --yasmexe=*)
3933             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3934                  "removed in the future. Use --x86asmexe instead."
3935             x86asmexe="$optval"
3936         ;;
3937         --enable-?*|--disable-?*)
3938             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3939             if is_in $option $COMPONENT_LIST; then
3940                 test $action = disable && action=unset
3941                 eval $action \$$(toupper ${option%s})_LIST
3942             elif is_in $option $CMDLINE_SELECT; then
3943                 $action $option
3944             else
3945                 die_unknown $opt
3946             fi
3947         ;;
3948         --list-*)
3949             NAME="${opt#--list-}"
3950             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3951             NAME=${NAME%s}
3952             eval show_list $NAME \$$(toupper $NAME)_LIST
3953         ;;
3954         --help|-h) show_help
3955         ;;
3956         --quiet|-q) quiet=yes
3957         ;;
3958         --fatal-warnings) enable fatal_warnings
3959         ;;
3960         --libfuzzer=*)
3961             libfuzzer_path="$optval"
3962         ;;
3963         *)
3964             optname="${opt%%=*}"
3965             optname="${optname#--}"
3966             optname=$(echo "$optname" | sed 's/-/_/g')
3967             if is_in $optname $CMDLINE_SET; then
3968                 eval $optname='$optval'
3969             elif is_in $optname $CMDLINE_APPEND; then
3970                 append $optname "$optval"
3971             else
3972                 die_unknown $opt
3973             fi
3974         ;;
3975     esac
3976 done
3977
3978 for e in $env; do
3979     eval "export $e"
3980 done
3981
3982 if disabled autodetect; then
3983
3984     # Unless iconv is explicitely disabled by the user, we still want to probe
3985     # for the iconv from the libc.
3986     disabled iconv || enable libc_iconv
3987
3988     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3989     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3990 fi
3991 # Mark specifically enabled, but normally autodetected libraries as requested.
3992 for lib in $AUTODETECT_LIBS; do
3993     enabled $lib && request $lib
3994 done
3995 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3996 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3997 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3998
3999 disabled logging && logfile=/dev/null
4000
4001 # command line configuration sanity checks
4002
4003 # we need to build at least one lib type
4004 if ! enabled_any static shared; then
4005     cat <<EOF
4006 At least one library type must be built.
4007 Specify --enable-static to build the static libraries or --enable-shared to
4008 build the shared libraries as well. To only build the shared libraries specify
4009 --disable-static in addition to --enable-shared.
4010 EOF
4011     exit 1
4012 fi
4013
4014 die_license_disabled() {
4015     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4016 }
4017
4018 die_license_disabled_gpl() {
4019     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4020 }
4021
4022 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4023 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4024
4025 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4026 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4027
4028 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4029
4030 if enabled nonfree; then
4031     license="nonfree and unredistributable"
4032 elif enabled gplv3; then
4033     license="GPL version 3 or later"
4034 elif enabled lgplv3; then
4035     license="LGPL version 3 or later"
4036 elif enabled gpl; then
4037     license="GPL version 2 or later"
4038 else
4039     license="LGPL version 2.1 or later"
4040 fi
4041
4042 enabled_all gnutls openssl &&
4043     die "GnuTLS and OpenSSL must not be enabled at the same time."
4044
4045 enabled_all gnutls mbedtls &&
4046     die "GnuTLS and mbedTLS must not be enabled at the same time."
4047
4048 enabled_all openssl mbedtls &&
4049     die "OpenSSL and mbedTLS must not be enabled at the same time."
4050
4051 # Disable all the library-specific components if the library itself
4052 # is disabled, see AVCODEC_LIST and following _LIST variables.
4053
4054 disable_components(){
4055     disabled ${1} && disable $(
4056         eval components="\$$(toupper ${1})_COMPONENTS"
4057         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4058     )
4059 }
4060
4061 map 'disable_components $v' $LIBRARY_LIST
4062
4063 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4064 set >> $logfile
4065
4066 test -n "$valgrind" && toolchain="valgrind-memcheck"
4067
4068 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4069     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4070     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4071 }
4072
4073 case "$toolchain" in
4074     *-asan)
4075         cc_default="${toolchain%-asan}"
4076         add_cflags  -fsanitize=address
4077         add_ldflags -fsanitize=address
4078     ;;
4079     *-msan)
4080         cc_default="${toolchain%-msan}"
4081         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4082         add_ldflags -fsanitize=memory
4083     ;;
4084     *-tsan)
4085         cc_default="${toolchain%-tsan}"
4086         add_cflags  -fsanitize=thread
4087         add_ldflags -fsanitize=thread
4088         case "$toolchain" in
4089             gcc-tsan)
4090                 add_cflags  -fPIC
4091                 add_ldflags -fPIC
4092                 ;;
4093         esac
4094     ;;
4095     *-usan)
4096         cc_default="${toolchain%-usan}"
4097         add_cflags  -fsanitize=undefined
4098         add_ldflags -fsanitize=undefined
4099     ;;
4100     valgrind-*)
4101         target_exec_default="valgrind"
4102         case "$toolchain" in
4103             valgrind-massif)
4104                 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"
4105                 ;;
4106             valgrind-memcheck)
4107                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4108                 ;;
4109         esac
4110     ;;
4111     msvc)
4112         # Check whether the current MSVC version needs the C99 converter.
4113         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4114         # support enough of C99 to build ffmpeg. Default to the new
4115         # behaviour if the regexp was unable to match anything, since this
4116         # successfully parses the version number of existing supported
4117         # versions that require the converter (MSVC 2010 and 2012).
4118         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4119         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4120             cc_default="cl"
4121             cxx_default="cl"
4122         else
4123             die "Unsupported MSVC version (2013 or newer required)"
4124         fi
4125         ld_default="$source_path/compat/windows/mslink"
4126         nm_default="dumpbin -symbols"
4127         ar_default="lib"
4128         case "$arch" in
4129         aarch64|arm64)
4130             as_default="armasm64"
4131             ;;
4132         arm*)
4133             as_default="armasm"
4134             ;;
4135         esac
4136         target_os_default="win32"
4137         # Use a relative path for TMPDIR. This makes sure all the
4138         # ffconf temp files are written with a relative path, avoiding
4139         # issues with msys/win32 path conversion for MSVC parameters
4140         # such as -Fo<file> or -out:<file>.
4141         TMPDIR=.
4142     ;;
4143     icl)
4144         cc_default="icl"
4145         ld_default="xilink"
4146         nm_default="dumpbin -symbols"
4147         ar_default="xilib"
4148         target_os_default="win32"
4149         TMPDIR=.
4150     ;;
4151     gcov)
4152         add_cflags  -fprofile-arcs -ftest-coverage
4153         add_ldflags -fprofile-arcs -ftest-coverage
4154     ;;
4155     llvm-cov)
4156         add_cflags -fprofile-arcs -ftest-coverage
4157         add_ldflags --coverage
4158     ;;
4159     hardened)
4160         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4161         add_cflags   -fno-strict-overflow -fstack-protector-all
4162         add_ldflags  -Wl,-z,relro -Wl,-z,now
4163         add_cflags   -fPIE
4164         add_ldexeflags -fPIE -pie
4165     ;;
4166     ?*)
4167         die "Unknown toolchain $toolchain"
4168     ;;
4169 esac
4170
4171 if test -n "$cross_prefix"; then
4172     test -n "$arch" && test -n "$target_os" ||
4173         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4174     enable cross_compile
4175 fi
4176
4177 set_default target_os
4178 if test "$target_os" = android; then
4179     cc_default="clang"
4180 fi
4181
4182 ar_default="${cross_prefix}${ar_default}"
4183 cc_default="${cross_prefix}${cc_default}"
4184 cxx_default="${cross_prefix}${cxx_default}"
4185 nm_default="${cross_prefix}${nm_default}"
4186 pkg_config_default="${cross_prefix}${pkg_config_default}"
4187 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4188     ranlib_default="${cross_prefix}${ranlib_default} -D"
4189 else
4190     ranlib_default="${cross_prefix}${ranlib_default}"
4191 fi
4192 strip_default="${cross_prefix}${strip_default}"
4193 windres_default="${cross_prefix}${windres_default}"
4194
4195 sysinclude_default="${sysroot}/usr/include"
4196
4197 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4198     target_exec x86asmexe nvcc
4199 enabled cross_compile || host_cc_default=$cc
4200 set_default host_cc
4201
4202 pkg_config_fail_message=""
4203 if ! $pkg_config --version >/dev/null 2>&1; then
4204     warn "$pkg_config not found, library detection may fail."
4205     pkg_config=false
4206 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4207     pkg_config_fail_message="
4208 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4209 fi
4210
4211 if test $doxygen != $doxygen_default && \
4212   ! $doxygen --version >/dev/null 2>&1; then
4213     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4214 fi
4215
4216 exesuf() {
4217     case $1 in
4218         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4219     esac
4220 }
4221
4222 EXESUF=$(exesuf $target_os)
4223 HOSTEXESUF=$(exesuf $host_os)
4224
4225 # set temporary file name
4226 : ${TMPDIR:=$TEMPDIR}
4227 : ${TMPDIR:=$TMP}
4228 : ${TMPDIR:=/tmp}
4229
4230 if [ -n "$tempprefix" ] ; then
4231     mktemp(){
4232         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4233         echo "$tmpname"
4234         mkdir "$tmpname"
4235     }
4236 elif ! test_cmd mktemp -u XXXXXX; then
4237     # simple replacement for missing mktemp
4238     # NOT SAFE FOR GENERAL USE
4239     mktemp(){
4240         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4241         echo "$tmpname"
4242         mkdir "$tmpname"
4243     }
4244 fi
4245
4246 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4247     die "Unable to create temporary directory in $TMPDIR."
4248
4249 tmpfile(){
4250     tmp="${FFTMPDIR}/test"$2
4251     (set -C; exec > $tmp) 2> /dev/null ||
4252         die "Unable to create temporary file in $FFTMPDIR."
4253     eval $1=$tmp
4254 }
4255
4256 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4257 trap 'exit 2' INT
4258
4259 tmpfile TMPASM .asm
4260 tmpfile TMPC   .c
4261 tmpfile TMPCPP .cpp
4262 tmpfile TMPE   $EXESUF
4263 tmpfile TMPH   .h
4264 tmpfile TMPM   .m
4265 tmpfile TMPCU  .cu
4266 tmpfile TMPO   .o
4267 tmpfile TMPS   .S
4268 tmpfile TMPSH  .sh
4269 tmpfile TMPV   .ver
4270
4271 unset -f mktemp
4272
4273 chmod +x $TMPE
4274
4275 # make sure we can execute files in $TMPDIR
4276 cat > $TMPSH 2>> $logfile <<EOF
4277 #! /bin/sh
4278 EOF
4279 chmod +x $TMPSH >> $logfile 2>&1
4280 if ! $TMPSH >> $logfile 2>&1; then
4281     cat <<EOF
4282 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4283 variable to another directory and make sure that it is not mounted noexec.
4284 EOF
4285     die "Sanity test failed."
4286 fi
4287
4288 armasm_flags(){
4289     for flag; do
4290         case $flag in
4291             # Filter out MSVC cl.exe options from cflags that shouldn't
4292             # be passed to gas-preprocessor
4293             -M[TD]*)                                            ;;
4294             *)                  echo $flag                      ;;
4295         esac
4296    done
4297 }
4298
4299 cparser_flags(){
4300     for flag; do
4301         case $flag in
4302             -Wno-switch)             echo -Wno-switch-enum ;;
4303             -Wno-format-zero-length) ;;
4304             -Wdisabled-optimization) ;;
4305             -Wno-pointer-sign)       echo -Wno-other ;;
4306             *)                       echo $flag ;;
4307         esac
4308     done
4309 }
4310
4311 msvc_common_flags(){
4312     for flag; do
4313         case $flag in
4314             # In addition to specifying certain flags under the compiler
4315             # specific filters, they must be specified here as well or else the
4316             # generic catch all at the bottom will print the original flag.
4317             -Wall)                ;;
4318             -Wextra)              ;;
4319             -std=c99)             ;;
4320             # Common flags
4321             -fomit-frame-pointer) ;;
4322             -g)                   echo -Z7 ;;
4323             -fno-math-errno)      ;;
4324             -fno-common)          ;;
4325             -fno-signed-zeros)    ;;
4326             -fPIC)                ;;
4327             -mthumb)              ;;
4328             -march=*)             ;;
4329             -lz)                  echo zlib.lib ;;
4330             -lx264)               echo libx264.lib ;;
4331             -lstdc++)             ;;
4332             -l*)                  echo ${flag#-l}.lib ;;
4333             -LARGEADDRESSAWARE)   echo $flag ;;
4334             -L*)                  echo -libpath:${flag#-L} ;;
4335             *)                    echo $flag ;;
4336         esac
4337     done
4338 }
4339
4340 msvc_flags(){
4341     msvc_common_flags "$@"
4342     for flag; do
4343         case $flag in
4344             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4345                                        -wd4554 ;;
4346             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4347                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4348                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4349                                        -wd4307 \
4350                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4351         esac
4352     done
4353 }
4354
4355 icl_flags(){
4356     msvc_common_flags "$@"
4357     for flag; do
4358         case $flag in
4359             # Despite what Intel's documentation says -Wall, which is supported
4360             # on Windows, does enable remarks so disable them here.
4361             -Wall)                echo $flag -Qdiag-disable:remark ;;
4362             -std=c99)             echo -Qstd=c99 ;;
4363             -flto)                echo -ipo ;;
4364         esac
4365     done
4366 }
4367
4368 icc_flags(){
4369     for flag; do
4370         case $flag in
4371             -flto)                echo -ipo ;;
4372             *)                    echo $flag ;;
4373         esac
4374     done
4375 }
4376
4377 suncc_flags(){
4378     for flag; do
4379         case $flag in
4380             -march=*|-mcpu=*)
4381                 case "${flag#*=}" in
4382                     native)                   echo -xtarget=native       ;;
4383                     v9|niagara)               echo -xarch=sparc          ;;
4384                     ultrasparc)               echo -xarch=sparcvis       ;;
4385                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4386                     i586|pentium)             echo -xchip=pentium        ;;
4387                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4388                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4389                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4390                     pentium4*)          echo -xtarget=pentium4           ;;
4391                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4392                     *-sse3)             echo -xarch=sse3                 ;;
4393                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4394                     bonnell)                   echo -xarch=ssse3         ;;
4395                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4396                     westmere)                  echo -xtarget=westmere    ;;
4397                     silvermont)                echo -xarch=sse4_2        ;;
4398                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4399                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4400                                                echo -xarch=avx           ;;
4401                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4402                     btver1)                    echo -xarch=amdsse4a      ;;
4403                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4404                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4405                     k8|opteron|athlon64|athlon-fx)
4406                                                echo -xarch=sse2a         ;;
4407                     athlon*)                   echo -xarch=pentium_proa  ;;
4408                 esac
4409                 ;;
4410             -std=c99)             echo -xc99              ;;
4411             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4412             -fPIC)                echo -KPIC -xcode=pic32 ;;
4413             -W*,*)                echo $flag              ;;
4414             -f*-*|-W*|-mimpure-text)                      ;;
4415             -shared)              echo -G                 ;;
4416             *)                    echo $flag              ;;
4417         esac
4418     done
4419 }
4420
4421 probe_cc(){
4422     pfx=$1
4423     _cc=$2
4424     first=$3
4425
4426     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4427     unset _ld_o _ldflags _ld_lib _ld_path
4428     unset _depflags _DEPCMD _DEPFLAGS
4429     _flags_filter=echo
4430
4431     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4432         true # no-op to avoid reading stdin in following checks
4433     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4434         _type=llvm_gcc
4435         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4436         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4437         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4438         _cflags_speed='-O3'
4439         _cflags_size='-Os'
4440     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4441         _type=gcc
4442         gcc_version=$($_cc --version | head -n1)
4443         gcc_basever=$($_cc -dumpversion)
4444         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4445         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4446         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4447         case $gcc_basever in
4448             2) ;;
4449             2.*) ;;
4450             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4451         esac
4452         if [ "$first" = true ]; then
4453             case $gcc_basever in
4454                 4.2*)
4455                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4456             esac
4457         fi
4458         _cflags_speed='-O3'
4459         _cflags_size='-Os'
4460     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4461         _type=icc
4462         _ident=$($_cc --version | head -n1)
4463         _depflags='-MMD'
4464         _cflags_speed='-O3'
4465         _cflags_size='-Os'
4466         _cflags_noopt='-O1'
4467         _flags_filter=icc_flags
4468     elif $_cc -v 2>&1 | grep -q xlc; then
4469         _type=xlc
4470         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4471         _cflags_speed='-O5'
4472         _cflags_size='-O5 -qcompact'
4473     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4474         test -d "$sysroot" || die "No valid sysroot specified."
4475         _type=armcc
4476         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4477         armcc_conf="$PWD/armcc.conf"
4478         $_cc --arm_linux_configure                 \
4479              --arm_linux_config_file="$armcc_conf" \
4480              --configure_sysroot="$sysroot"        \
4481              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4482              die "Error creating armcc configuration file."
4483         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4484         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4485         as_default="${cross_prefix}gcc"
4486         _depflags='-MMD'
4487         _cflags_speed='-O3'
4488         _cflags_size='-Os'
4489     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4490         _type=clang
4491         _ident=$($_cc --version 2>/dev/null | head -n1)
4492         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4493         _cflags_speed='-O3'
4494         _cflags_size='-Oz'
4495     elif $_cc -V 2>&1 | grep -q Sun; then
4496         _type=suncc
4497         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4498         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4499         _DEPFLAGS='-xM1 -xc99'
4500         _ldflags='-std=c99'
4501         _cflags_speed='-O5'
4502         _cflags_size='-O5 -xspace'
4503         _flags_filter=suncc_flags
4504     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4505         _type=pathscale
4506         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4507         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4508         _cflags_speed='-O2'
4509         _cflags_size='-Os'
4510         _flags_filter='filter_out -Wdisabled-optimization'
4511     elif $_cc -v 2>&1 | grep -q Open64; then
4512         _type=open64
4513         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4514         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4515         _cflags_speed='-O2'
4516         _cflags_size='-Os'
4517         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4518     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4519         _type=armasm
4520         _ident=$($_cc | head -n1)
4521         # 4509: "This form of conditional instruction is deprecated"
4522         _flags="-nologo -ignore 4509"
4523         _flags_filter=armasm_flags
4524     elif $_cc 2>&1 | grep -q Intel; then
4525         _type=icl
4526         _ident=$($_cc 2>&1 | head -n1)
4527         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4528         # Not only is O3 broken on 13.x+ but it is slower on all previous
4529         # versions (tested) as well.
4530         _cflags_speed="-O2"
4531         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4532         if $_cc 2>&1 | grep -q Linker; then
4533             _ld_o='-out:$@'
4534         else
4535             _ld_o='-Fe$@'
4536         fi
4537         _cc_o='-Fo$@'
4538         _cc_e='-P'
4539         _flags_filter=icl_flags
4540         _ld_lib='lib%.a'
4541         _ld_path='-libpath:'
4542         # -Qdiag-error to make icl error when seeing certain unknown arguments
4543         _flags='-nologo -Qdiag-error:4044,10157'
4544         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4545         # with MSVC which enables it by default.
4546         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4547         disable stripping
4548     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4549         # lld can emulate multiple different linkers; in ms link.exe mode,
4550         # the -? parameter gives the help output which contains an identifyable
4551         # string, while it gives an error in other modes.
4552         _type=lld-link
4553         # The link.exe mode doesn't have a switch for getting the version,
4554         # but we can force it back to gnu mode and get the version from there.
4555         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4556         _ld_o='-out:$@'
4557         _flags_filter=msvc_flags
4558         _ld_lib='lib%.a'
4559         _ld_path='-libpath:'
4560     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4561         _type=msvc
4562         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4563         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4564         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4565         _cflags_speed="-O2"
4566         _cflags_size="-O1"
4567         _cflags_noopt="-O1"
4568         if $_cc -nologo- 2>&1 | grep -q Linker; then
4569             _ld_o='-out:$@'
4570         else
4571             _ld_o='-Fe$@'
4572         fi
4573         _cc_o='-Fo$@'
4574         _cc_e='-P -Fi$@'
4575         _flags_filter=msvc_flags
4576         _ld_lib='lib%.a'
4577         _ld_path='-libpath:'
4578         _flags='-nologo'
4579         disable stripping
4580     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4581         _type=cparser
4582         _ident=$($_cc --version | head -n1)
4583         _depflags='-MMD'
4584         _cflags_speed='-O4'
4585         _cflags_size='-O2'
4586         _flags_filter=cparser_flags
4587     fi
4588
4589     eval ${pfx}_type=\$_type
4590     eval ${pfx}_ident=\$_ident
4591 }
4592
4593 set_ccvars(){
4594     eval ${1}_C=\${_cc_c-\${${1}_C}}
4595     eval ${1}_E=\${_cc_e-\${${1}_E}}
4596     eval ${1}_O=\${_cc_o-\${${1}_O}}
4597
4598     if [ -n "$_depflags" ]; then
4599         eval ${1}_DEPFLAGS=\$_depflags
4600     else
4601         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4602         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4603         eval DEP${1}FLAGS=\$_flags
4604     fi
4605 }
4606
4607 probe_cc cc "$cc" "true"
4608 cflags_filter=$_flags_filter
4609 cflags_speed=$_cflags_speed
4610 cflags_size=$_cflags_size
4611 cflags_noopt=$_cflags_noopt
4612 add_cflags $_flags $_cflags
4613 cc_ldflags=$_ldflags
4614 set_ccvars CC
4615 set_ccvars CXX
4616
4617 probe_cc hostcc "$host_cc"
4618 host_cflags_filter=$_flags_filter
4619 host_cflags_speed=$_cflags_speed
4620 add_host_cflags  $_flags $_cflags
4621 set_ccvars HOSTCC
4622
4623 test -n "$cc_type" && enable $cc_type ||
4624     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4625
4626 : ${as_default:=$cc}
4627 : ${objcc_default:=$cc}
4628 : ${dep_cc_default:=$cc}
4629 : ${ld_default:=$cc}
4630 : ${host_ld_default:=$host_cc}
4631 set_default ar as objcc dep_cc ld ln_s host_ld windres
4632
4633 probe_cc as "$as"
4634 asflags_filter=$_flags_filter
4635 add_asflags $_flags $_cflags
4636 set_ccvars AS
4637
4638 probe_cc objcc "$objcc"
4639 objcflags_filter=$_flags_filter
4640 add_objcflags $_flags $_cflags
4641 set_ccvars OBJC
4642
4643 probe_cc ld "$ld"
4644 ldflags_filter=$_flags_filter
4645 add_ldflags $_flags $_ldflags
4646 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4647 LD_O=${_ld_o-$LD_O}
4648 LD_LIB=${_ld_lib-$LD_LIB}
4649 LD_PATH=${_ld_path-$LD_PATH}
4650
4651 probe_cc hostld "$host_ld"
4652 host_ldflags_filter=$_flags_filter
4653 add_host_ldflags $_flags $_ldflags
4654 HOSTLD_O=${_ld_o-$HOSTLD_O}
4655
4656 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4657     probe_cc depcc "$dep_cc"
4658     CCDEP=${_DEPCMD:-$DEPCMD}
4659     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4660     DEPCCFLAGS=$_flags
4661 fi
4662
4663 if $ar 2>&1 | grep -q Microsoft; then
4664     arflags="-nologo"
4665     ar_o='-out:$@'
4666 elif $ar 2>&1 | grep -q "\[D\] "; then
4667     arflags="rcD"
4668     ar_o='$@'
4669 else
4670     arflags="rc"
4671     ar_o='$@'
4672 fi
4673
4674 add_cflags $extra_cflags
4675 add_cxxflags $extra_cxxflags
4676 add_objcflags $extra_objcflags
4677 add_asflags $extra_cflags
4678
4679 if test -n "$sysroot"; then
4680     case "$cc_type" in
4681         gcc|llvm_gcc|clang)
4682             add_cppflags --sysroot="$sysroot"
4683             add_ldflags --sysroot="$sysroot"
4684         ;;
4685     esac
4686 fi
4687
4688 if test "$cpu" = host; then
4689     enabled cross_compile &&
4690         die "--cpu=host makes no sense when cross-compiling."
4691
4692     case "$cc_type" in
4693         gcc|llvm_gcc)
4694             check_native(){
4695                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4696                 sed -n "/cc1.*$1=/{
4697                             s/.*$1=\\([^ ]*\\).*/\\1/
4698                             p
4699                             q
4700                         }" $TMPE
4701             }
4702             cpu=$(check_native -march || check_native -mcpu)
4703         ;;
4704         clang)
4705             check_native(){
4706                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4707                 sed -n "/cc1.*-target-cpu /{
4708                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4709                             p
4710                             q
4711                         }" $TMPE
4712             }
4713             cpu=$(check_native -march)
4714         ;;
4715     esac
4716
4717     test "${cpu:-host}" = host &&
4718         die "--cpu=host not supported with compiler $cc"
4719 fi
4720
4721 # Deal with common $arch aliases
4722 case "$arch" in
4723     aarch64|arm64)
4724         arch="aarch64"
4725     ;;
4726     arm*|iPad*|iPhone*)
4727         arch="arm"
4728     ;;
4729     mips*|IP*)
4730         case "$arch" in
4731         *el)
4732             add_cppflags -EL
4733             add_ldflags -EL
4734         ;;
4735         *eb)
4736             add_cppflags -EB
4737             add_ldflags -EB
4738         ;;
4739         esac
4740         arch="mips"
4741     ;;
4742     parisc*|hppa*)
4743         arch="parisc"
4744     ;;
4745     "Power Macintosh"|ppc*|powerpc*)
4746         arch="ppc"
4747     ;;
4748     s390|s390x)
4749         arch="s390"
4750     ;;
4751     sh4|sh)
4752         arch="sh4"
4753     ;;
4754     sun4*|sparc*)
4755         arch="sparc"
4756     ;;
4757     tilegx|tile-gx)
4758         arch="tilegx"
4759     ;;
4760     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4761         arch="x86"
4762     ;;
4763 esac
4764
4765 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4766 enable $arch
4767
4768 # Add processor-specific flags
4769 if enabled aarch64; then
4770
4771     case $cpu in
4772         armv*)
4773             cpuflags="-march=$cpu"
4774         ;;
4775         *)
4776             cpuflags="-mcpu=$cpu"
4777         ;;
4778     esac
4779
4780 elif enabled alpha; then
4781
4782     cpuflags="-mcpu=$cpu"
4783
4784 elif enabled arm; then
4785
4786     check_arm_arch() {
4787         test_cpp_condition stddef.h \
4788             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4789             $cpuflags
4790     }
4791
4792     probe_arm_arch() {
4793         if   check_arm_arch 4;        then echo armv4
4794         elif check_arm_arch 4T;       then echo armv4t
4795         elif check_arm_arch 5;        then echo armv5
4796         elif check_arm_arch 5E;       then echo armv5e
4797         elif check_arm_arch 5T;       then echo armv5t
4798         elif check_arm_arch 5TE;      then echo armv5te
4799         elif check_arm_arch 5TEJ;     then echo armv5te
4800         elif check_arm_arch 6;        then echo armv6
4801         elif check_arm_arch 6J;       then echo armv6j
4802         elif check_arm_arch 6K;       then echo armv6k
4803         elif check_arm_arch 6Z;       then echo armv6z
4804         elif check_arm_arch 6KZ;      then echo armv6zk
4805         elif check_arm_arch 6ZK;      then echo armv6zk
4806         elif check_arm_arch 6T2;      then echo armv6t2
4807         elif check_arm_arch 7;        then echo armv7
4808         elif check_arm_arch 7A  7_A;  then echo armv7-a
4809         elif check_arm_arch 7S;       then echo armv7-a
4810         elif check_arm_arch 7R  7_R;  then echo armv7-r
4811         elif check_arm_arch 7M  7_M;  then echo armv7-m
4812         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4813         elif check_arm_arch 8A  8_A;  then echo armv8-a
4814         fi
4815     }
4816
4817     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4818
4819     case $cpu in
4820         armv*)
4821             cpuflags="-march=$cpu"
4822             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4823         ;;
4824         *)
4825             cpuflags="-mcpu=$cpu"
4826             case $cpu in
4827                 cortex-a*)                               subarch=armv7a  ;;
4828                 cortex-r*)                               subarch=armv7r  ;;
4829                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4830                 arm11*)                                  subarch=armv6   ;;
4831                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4832                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4833                 *)                             subarch=$(probe_arm_arch) ;;
4834             esac
4835         ;;
4836     esac
4837
4838     case "$subarch" in
4839         armv5t*)    enable fast_clz                ;;
4840         armv[6-8]*)
4841             enable fast_clz
4842             disabled fast_unaligned || enable fast_unaligned
4843             ;;
4844     esac
4845
4846 elif enabled avr32; then
4847
4848     case $cpu in
4849         ap7[02]0[0-2])
4850             subarch="avr32_ap"
4851             cpuflags="-mpart=$cpu"
4852         ;;
4853         ap)
4854             subarch="avr32_ap"
4855             cpuflags="-march=$cpu"
4856         ;;
4857         uc3[ab]*)
4858             subarch="avr32_uc"
4859             cpuflags="-mcpu=$cpu"
4860         ;;
4861         uc)
4862             subarch="avr32_uc"
4863             cpuflags="-march=$cpu"
4864         ;;
4865     esac
4866
4867 elif enabled bfin; then
4868
4869     cpuflags="-mcpu=$cpu"
4870
4871 elif enabled mips; then
4872
4873     cpuflags="-march=$cpu"
4874
4875     if [ "$cpu" != "generic" ]; then
4876         disable mips32r2
4877         disable mips32r5
4878         disable mips64r2
4879         disable mips32r6
4880         disable mips64r6
4881         disable loongson2
4882         disable loongson3
4883
4884         case $cpu in
4885             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4886                 enable mips32r2
4887                 disable msa
4888             ;;
4889             p5600|i6400|p6600)
4890                 disable mipsdsp
4891                 disable mipsdspr2
4892             ;;
4893             loongson*)
4894                 enable loongson2
4895                 enable loongson3
4896                 enable local_aligned
4897                 enable simd_align_16
4898                 enable fast_64bit
4899                 enable fast_clz
4900                 enable fast_cmov
4901                 enable fast_unaligned
4902                 disable aligned_stack
4903                 disable mipsdsp
4904                 disable mipsdspr2
4905                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4906                 if [ $cc == gcc ]; then
4907                     gcc_version=$(gcc -dumpversion)
4908                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4909                         expensive_optimization_flag=""
4910                     else
4911                         expensive_optimization_flag="-fno-expensive-optimizations"
4912                     fi
4913                 fi
4914                 case $cpu in
4915                     loongson3*)
4916                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4917                     ;;
4918                     loongson2e)
4919                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4920                     ;;
4921                     loongson2f)
4922                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4923                     ;;
4924                 esac
4925             ;;
4926             *)
4927                 # Unknown CPU. Disable everything.
4928                 warn "unknown CPU. Disabling all MIPS optimizations."
4929                 disable mipsfpu
4930                 disable mipsdsp
4931                 disable mipsdspr2
4932                 disable msa
4933                 disable mmi
4934             ;;
4935         esac
4936
4937         case $cpu in
4938             24kc)
4939                 disable mipsfpu
4940                 disable mipsdsp
4941                 disable mipsdspr2
4942             ;;
4943             24kf*)
4944                 disable mipsdsp
4945                 disable mipsdspr2
4946             ;;
4947             24kec|34kc|1004kc)
4948                 disable mipsfpu
4949                 disable mipsdspr2
4950             ;;
4951             24kef*|34kf*|1004kf*)
4952                 disable mipsdspr2
4953             ;;
4954             74kc)
4955                 disable mipsfpu
4956             ;;
4957             p5600)
4958                 enable mips32r5
4959                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4960             ;;
4961             i6400)
4962                 enable mips64r6
4963                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4964             ;;
4965             p6600)
4966                 enable mips64r6
4967                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4968             ;;
4969         esac
4970     else
4971         # We do not disable anything. Is up to the user to disable the unwanted features.
4972         warn 'generic cpu selected'
4973     fi
4974
4975 elif enabled ppc; then
4976
4977     disable ldbrx
4978
4979     case $(tolower $cpu) in
4980         601|ppc601|powerpc601)
4981             cpuflags="-mcpu=601"
4982             disable altivec
4983         ;;
4984         603*|ppc603*|powerpc603*)
4985             cpuflags="-mcpu=603"
4986             disable altivec
4987         ;;
4988         604*|ppc604*|powerpc604*)
4989             cpuflags="-mcpu=604"
4990             disable altivec
4991         ;;
4992         g3|75*|ppc75*|powerpc75*)
4993             cpuflags="-mcpu=750"
4994             disable altivec
4995         ;;
4996         g4|745*|ppc745*|powerpc745*)
4997             cpuflags="-mcpu=7450"
4998             disable vsx
4999         ;;
5000         74*|ppc74*|powerpc74*)
5001             cpuflags="-mcpu=7400"
5002             disable vsx
5003         ;;
5004         g5|970|ppc970|powerpc970)
5005             cpuflags="-mcpu=970"
5006             disable vsx
5007         ;;
5008         power[3-6]*)
5009             cpuflags="-mcpu=$cpu"
5010             disable vsx
5011         ;;
5012         power[7-8]*)
5013             cpuflags="-mcpu=$cpu"
5014         ;;
5015         cell)
5016             cpuflags="-mcpu=cell"
5017             enable ldbrx
5018             disable vsx
5019         ;;
5020         e500mc)
5021             cpuflags="-mcpu=e500mc"
5022             disable altivec
5023         ;;
5024         e500v2)
5025             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5026             disable altivec
5027             disable dcbzl
5028         ;;
5029         e500)
5030             cpuflags="-mcpu=8540 -mhard-float"
5031             disable altivec
5032             disable dcbzl
5033         ;;
5034     esac
5035
5036 elif enabled sparc; then
5037
5038     case $cpu in
5039         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5040             cpuflags="-mcpu=$cpu"
5041         ;;
5042         ultrasparc*|niagara[234])
5043             cpuflags="-mcpu=$cpu"
5044         ;;
5045     esac
5046
5047 elif enabled x86; then
5048
5049     case $cpu in
5050         i[345]86|pentium)
5051             cpuflags="-march=$cpu"
5052             disable i686
5053             disable mmx
5054         ;;
5055         # targets that do NOT support nopl and conditional mov (cmov)
5056         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5057             cpuflags="-march=$cpu"
5058             disable i686
5059         ;;
5060         # targets that do support nopl and conditional mov (cmov)
5061         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5062         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5063         |amdfam10|barcelona|b[dt]ver*|znver*)
5064             cpuflags="-march=$cpu"
5065             enable i686
5066             enable fast_cmov
5067         ;;
5068         # targets that do support conditional mov but on which it's slow
5069         pentium4|pentium4m|prescott|nocona)
5070             cpuflags="-march=$cpu"
5071             enable i686
5072             disable fast_cmov
5073         ;;
5074     esac
5075
5076 fi
5077
5078 if [ "$cpu" != generic ]; then
5079     add_cflags  $cpuflags
5080     add_asflags $cpuflags
5081     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5082 fi
5083
5084 # compiler sanity check
5085 test_exec <<EOF
5086 int main(void){ return 0; }
5087 EOF
5088 if test "$?" != 0; then
5089     echo "$cc is unable to create an executable file."
5090     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5091         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5092         echo "Only do this if you know what cross compiling means."
5093     fi
5094     die "C compiler test failed."
5095 fi
5096
5097 add_cppflags -D_ISOC99_SOURCE
5098 add_cxxflags -D__STDC_CONSTANT_MACROS
5099 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5100
5101 # some compilers silently accept -std=c11, so we also need to check that the
5102 # version macro is defined properly
5103 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5104     add_cflags -std=c11 ||
5105     check_cflags -std=c99
5106
5107 check_cppflags -D_FILE_OFFSET_BITS=64
5108 check_cppflags -D_LARGEFILE_SOURCE
5109
5110 add_host_cppflags -D_ISOC99_SOURCE
5111 check_host_cflags -std=c99
5112 check_host_cflags -Wall
5113 check_host_cflags $host_cflags_speed
5114
5115 check_64bit(){
5116     arch32=$1
5117     arch64=$2
5118     expr=${3:-'sizeof(void *) > 4'}
5119     test_code cc "" "int test[2*($expr) - 1]" &&
5120         subarch=$arch64 || subarch=$arch32
5121     enable $subarch
5122 }
5123
5124 case "$arch" in
5125     aarch64|alpha|ia64)
5126         enabled shared && enable_weak pic
5127     ;;
5128     mips)
5129         check_64bit mips mips64 '_MIPS_SIM > 1'
5130         enabled shared && enable_weak pic
5131     ;;
5132     parisc)
5133         check_64bit parisc parisc64
5134         enabled shared && enable_weak pic
5135     ;;
5136     ppc)
5137         check_64bit ppc ppc64
5138         enabled shared && enable_weak pic
5139     ;;
5140     s390)
5141         check_64bit s390 s390x
5142         enabled shared && enable_weak pic
5143     ;;
5144     sparc)
5145         check_64bit sparc sparc64
5146         enabled shared && enable_weak pic
5147     ;;
5148     x86)
5149         check_64bit x86_32 x86_64
5150         # Treat x32 as x64 for now. Note it also needs pic if shared
5151         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5152             subarch=x86_64 && enable x86_64 && disable x86_32
5153         if enabled x86_64; then
5154             enabled shared && enable_weak pic
5155             objformat=elf64
5156         fi
5157     ;;
5158 esac
5159
5160 # OS specific
5161 case $target_os in
5162     aix)
5163         SHFLAGS=-shared
5164         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5165         enabled shared && add_ldflags -Wl,-brtl
5166         arflags='-Xany -r -c'
5167         striptype=""
5168         ;;
5169     android)
5170         disable symver
5171         enable section_data_rel_ro
5172         add_cflags -fPIE
5173         add_ldexeflags -fPIE -pie
5174         SLIB_INSTALL_NAME='$(SLIBNAME)'
5175         SLIB_INSTALL_LINKS=
5176         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5177         ;;
5178     haiku)
5179         prefix_default="/boot/common"
5180         network_extralibs="-lnetwork"
5181         host_extralibs=
5182         ;;
5183     sunos)
5184         SHFLAGS='-shared -Wl,-h,$$(@F)'
5185         enabled x86 && append SHFLAGS -mimpure-text
5186         network_extralibs="-lsocket -lnsl"
5187         add_cppflags -D__EXTENSIONS__
5188         # When using suncc to build, the Solaris linker will mark
5189         # an executable with each instruction set encountered by
5190         # the Solaris assembler.  As our libraries contain their own
5191         # guards for processor-specific code, instead suppress
5192         # generation of the HWCAPS ELF section on Solaris x86 only.
5193         enabled_all suncc x86 &&
5194             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5195             add_ldflags -Wl,-M,mapfile
5196         nm_default='nm -P -g'
5197         striptype=""
5198         version_script='-M'
5199         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5200         ;;
5201     netbsd)
5202         disable symver
5203         oss_indev_extralibs="-lossaudio"
5204         oss_outdev_extralibs="-lossaudio"
5205         enabled gcc || check_ldflags -Wl,-zmuldefs
5206         ;;
5207     openbsd|bitrig)
5208         disable symver
5209         striptype=""
5210         SHFLAGS='-shared'
5211         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5212         SLIB_INSTALL_LINKS=
5213         oss_indev_extralibs="-lossaudio"
5214         oss_outdev_extralibs="-lossaudio"
5215         ;;
5216     dragonfly)
5217         disable symver
5218         ;;
5219     freebsd)
5220         ;;
5221     bsd/os)
5222         add_extralibs -lpoll -lgnugetopt
5223         strip="strip -d"
5224         ;;
5225     darwin)
5226         enabled ppc && add_asflags -force_cpusubtype_ALL
5227         install_name_dir_default='$(SHLIBDIR)'
5228         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5229         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5230         strip="${strip} -x"
5231         add_ldflags -Wl,-dynamic,-search_paths_first
5232         check_cflags -Werror=partial-availability
5233         SLIBSUF=".dylib"
5234         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5235         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5236         enabled x86_64 && objformat="macho64" || objformat="macho32"
5237         enabled_any pic shared x86_64 ||
5238             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5239         check_headers dispatch/dispatch.h &&
5240             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5241         if test -n "$sysroot"; then
5242             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5243             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5244         fi
5245         version_script='-exported_symbols_list'
5246         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5247         ;;
5248     msys*)
5249         die "Native MSYS builds are discouraged, please use the MINGW environment."
5250         ;;
5251     mingw32*|mingw64*)
5252         target_os=mingw32
5253         LIBTARGET=i386
5254         if enabled x86_64; then
5255             LIBTARGET="i386:x86-64"
5256         elif enabled arm; then
5257             LIBTARGET="arm"
5258         elif enabled aarch64; then
5259             LIBTARGET="arm64"
5260         fi
5261         if enabled shared; then
5262             # Cannot build both shared and static libs when using dllimport.
5263             disable static
5264         fi
5265         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5266         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5267         shlibdir_default="$bindir_default"
5268         SLIBPREF=""
5269         SLIBSUF=".dll"
5270         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5271         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5272         if test_cmd lib.exe -list; then
5273             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5274             if enabled x86_64; then
5275                 LIBTARGET=x64
5276             fi
5277         else
5278             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5279         fi
5280         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5281         SLIB_INSTALL_LINKS=
5282         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5283         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5284         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5285         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5286         enabled x86_64 && objformat="win64" || objformat="win32"
5287         dlltool="${cross_prefix}dlltool"
5288         ranlib=:
5289         enable dos_paths
5290         check_ldflags -Wl,--nxcompat,--dynamicbase
5291         # Lets work around some stupidity in binutils.
5292         # ld will strip relocations from executables even though we need them
5293         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5294         # however ld then forgets what the entry point should be (oops) so we
5295         # have to manually (re)set it.
5296         if enabled x86_32; then
5297             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5298         elif enabled x86_64; then
5299             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5300             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5301             # Set image base >4GB for extra entropy with HEASLR
5302             add_ldexeflags -Wl,--image-base,0x140000000
5303             append SHFLAGS -Wl,--image-base,0x180000000
5304         fi
5305         ;;
5306     win32|win64)
5307         disable symver
5308         if enabled shared; then
5309             # Link to the import library instead of the normal static library
5310             # for shared libs.
5311             LD_LIB='%.lib'
5312             # Cannot build both shared and static libs with MSVC or icl.
5313             disable static
5314         fi
5315         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5316         shlibdir_default="$bindir_default"
5317         SLIBPREF=""
5318         SLIBSUF=".dll"
5319         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5320         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5321         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5322         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5323         SLIB_INSTALL_LINKS=
5324         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5325         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5326         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5327         enabled x86_64 && objformat="win64" || objformat="win32"
5328         ranlib=:
5329         enable dos_paths
5330         ;;
5331     cygwin*)
5332         target_os=cygwin
5333         shlibdir_default="$bindir_default"
5334         SLIBPREF="cyg"
5335         SLIBSUF=".dll"
5336         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5337         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5338         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5339         SLIB_INSTALL_LINKS=
5340         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5341         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5342         enabled x86_64 && objformat="win64" || objformat="win32"
5343         enable dos_paths
5344         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5345         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5346         ;;
5347     *-dos|freedos|opendos)
5348         network_extralibs="-lsocket"
5349         objformat="coff"
5350         enable dos_paths
5351         ;;
5352     linux)
5353         enable section_data_rel_ro
5354         enabled_any arm aarch64 && enable_weak linux_perf
5355         ;;
5356     irix*)
5357         target_os=irix
5358         ranlib="echo ignoring ranlib"
5359         ;;
5360     os/2*)
5361         strip="lxlite -CS"
5362         striptype=""
5363         objformat="aout"
5364         add_cppflags -D_GNU_SOURCE
5365         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5366         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5367         LIBSUF="_s.a"
5368         SLIBPREF=""
5369         SLIBSUF=".dll"
5370         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5371         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5372         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5373             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5374             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5375             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5376             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5377         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5378             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5379         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5380         SLIB_INSTALL_LINKS=
5381         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5382         enable dos_paths
5383         enable_weak os2threads
5384         ;;
5385     gnu/kfreebsd)
5386         add_cppflags -D_BSD_SOURCE
5387         ;;
5388     gnu)
5389         ;;
5390     qnx)
5391         add_cppflags -D_QNX_SOURCE
5392         network_extralibs="-lsocket"
5393         ;;
5394     symbian)
5395         SLIBSUF=".dll"
5396         enable dos_paths
5397         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5398         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5399         add_ldflags -Wl,--target1-abs,--no-undefined \
5400                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5401                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5402         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5403                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5404                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5405         ;;
5406     minix)
5407         ;;
5408     none)
5409         ;;
5410     *)
5411         die "Unknown OS '$target_os'."
5412         ;;
5413 esac
5414
5415 # test if creating links works
5416 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5417 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5418 mkdir "$link_dest"
5419 $ln_s "$link_dest" "$link_name"
5420 touch "$link_dest/test_file"
5421 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5422     # create link to source path
5423     [ -e src ] && rm src
5424     $ln_s "$source_path" src
5425     source_link=src
5426 else
5427     # creating directory links doesn't work
5428     # fall back to using the full source path
5429     source_link="$source_path"
5430 fi
5431 # cleanup
5432 rm -r "$link_dest"
5433 rm -r "$link_name"
5434
5435 # determine libc flavour
5436
5437 probe_libc(){
5438     pfx=$1
5439     pfx_no_=${pfx%_}
5440     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5441     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5442         eval ${pfx}libc_type=uclibc
5443         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5444     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5445         eval ${pfx}libc_type=glibc
5446         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5447     # MinGW headers can be installed on Cygwin, so check for newlib first.
5448     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5449         eval ${pfx}libc_type=newlib
5450         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5451     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5452     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5453         eval ${pfx}libc_type=mingw64
5454         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5455             add_compat msvcrt/snprintf.o
5456             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5457         fi
5458         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5459         eval test \$${pfx_no_}cc_type = "gcc" &&
5460             add_${pfx}cppflags -D__printf__=__gnu_printf__
5461         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5462             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5463     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5464          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5465         eval ${pfx}libc_type=mingw32
5466         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5467             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5468             die "ERROR: MinGW32 runtime version must be >= 3.15."
5469         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5470         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5471             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5472         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5473             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5474         eval test \$${pfx_no_}cc_type = "gcc" &&
5475             add_${pfx}cppflags -D__printf__=__gnu_printf__
5476     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5477         eval ${pfx}libc_type=msvcrt
5478         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5479             if [ "$pfx" = host_ ]; then
5480                 add_host_cppflags -Dsnprintf=_snprintf
5481             else
5482                 add_compat strtod.o strtod=avpriv_strtod
5483                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5484                                              _snprintf=avpriv_snprintf  \
5485                                              vsnprintf=avpriv_vsnprintf
5486             fi
5487         fi
5488         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5489         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5490         # 0x601 by default unless something else is set by the user.
5491         # This can easily lead to us detecting functions only present
5492         # in such new versions and producing binaries requiring windows 7.0.
5493         # Therefore explicitly set the default to Vista unless the user has
5494         # set something else on the command line.
5495         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5496         # family. For these cases, configure is free to use any functions
5497         # found in the SDK headers by default. (Alternatively, we could force
5498         # _WIN32_WINNT to 0x0602 in that case.)
5499         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5500             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5501 #ifdef WINAPI_FAMILY
5502 #include <winapifamily.h>
5503 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5504 #error not desktop
5505 #endif
5506 #endif
5507 EOF
5508         if [ "$pfx" = "" ]; then
5509             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5510             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5511         fi
5512     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5513         eval ${pfx}libc_type=klibc
5514     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5515         eval ${pfx}libc_type=bionic
5516     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5517         eval ${pfx}libc_type=solaris
5518         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5519     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5520         eval ${pfx}libc_type=djgpp
5521         add_cppflags -U__STRICT_ANSI__
5522         add_cflags "-include $source_path/compat/djgpp/math.h"
5523         add_compat djgpp/math.o
5524     fi
5525     test_${pfx}cc <<EOF
5526 #include <time.h>
5527 void *v = localtime_r;
5528 EOF
5529 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5530 #include <time.h>
5531 void *v = localtime_r;
5532 EOF
5533
5534     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5535 }
5536
5537 probe_libc
5538 probe_libc host_
5539
5540 # hacks for compiler/libc/os combinations
5541
5542 case $libc_type in
5543     bionic)
5544         add_compat strtod.o strtod=avpriv_strtod
5545         ;;
5546 esac
5547
5548 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5549     add_cppflags '-I\$(SRC_PATH)/compat/float'
5550
5551 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5552
5553 set_default libdir
5554 : ${shlibdir_default:="$libdir"}
5555 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5556
5557 set_default $PATHS_LIST
5558 set_default nm
5559
5560 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5561
5562 enable_weak_pic() {
5563     disabled pic && return
5564     enable pic
5565     add_cppflags -DPIC
5566     case "$target_os" in
5567     mingw*|cygwin*|win*)
5568         ;;
5569     *)
5570         add_cflags -fPIC
5571         add_asflags -fPIC
5572         ;;
5573     esac
5574 }
5575
5576 enabled pic && enable_weak_pic
5577
5578 test_cc <<EOF || die "Symbol mangling check failed."
5579 int ff_extern;
5580 EOF
5581 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5582 extern_prefix=${sym%%ff_extern*}
5583
5584 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5585
5586 for restrict_keyword in restrict __restrict__ __restrict ""; do
5587     test_code cc "" "char * $restrict_keyword p" && break
5588 done
5589
5590 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5591
5592 # The global variable ensures the bits appear unchanged in the object file.
5593 test_cc <<EOF || die "endian test failed"
5594 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5595 EOF
5596 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5597
5598 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5599
5600 if ! enabled ppc64 || enabled bigendian; then
5601     disable vsx
5602 fi
5603
5604 check_gas() {
5605     log "check_gas using '$as' as AS"
5606     # :vararg is used on aarch64, arm and ppc altivec
5607     check_as vararg "
5608 .macro m n, y:vararg=0
5609 \n: .int \y
5610 .endm
5611 m x" || return 1
5612     # .altmacro is only used in arm asm
5613     ! enabled arm || check_as gnu_as ".altmacro"
5614 }
5615
5616 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5617     nogas=:
5618     enabled_any arm aarch64 && nogas=die
5619     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5620     as_noop=-v
5621
5622     case $as_type in
5623         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5624         gcc)  gaspp_as_type=gas ;;
5625         *)    gaspp_as_type=$as_type ;;
5626     esac
5627
5628     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5629
5630     test "${as#*gas-preprocessor.pl}" != "$as" ||
5631     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5632         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5633
5634     if ! check_gas ; then
5635         as=${gas:=$as}
5636         check_gas || \
5637             $nogas "GNU assembler not found, install/update gas-preprocessor"
5638     fi
5639
5640     check_as as_func ".func test
5641                       .endfunc"
5642 fi
5643
5644 check_inline_asm inline_asm_labels '"1:\n"'
5645
5646 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5647
5648 if enabled aarch64; then
5649     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5650     # internal assembler in clang 3.3 does not support this instruction
5651     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5652     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5653
5654     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5655
5656 elif enabled alpha; then
5657
5658     check_cflags -mieee
5659
5660 elif enabled arm; then
5661
5662     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5663     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5664 float func(float a, float b){ return a+b; }
5665 EOF
5666     enabled thumb && check_cflags -mthumb || check_cflags -marm
5667
5668     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5669         :
5670     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5671         :
5672     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5673         case "${cross_prefix:-$cc}" in
5674             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5675             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5676 __asm__ (".eabi_attribute 28, 1");
5677 int main(void) { return 0; }
5678 EOF
5679         esac
5680         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5681     fi
5682
5683     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5684     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5685     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5686     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5687     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5688     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5689     enabled setend  && check_insn setend  'setend be'
5690
5691     [ $target_os = linux ] || [ $target_os = android ] ||
5692         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5693             $ARCH_EXT_LIST_ARM
5694
5695     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5696
5697     check_as as_arch_directive ".arch armv7-a"
5698     check_as as_dn_directive   "ra .dn d0.i16"
5699     check_as as_fpu_directive  ".fpu neon"
5700
5701     # llvm's integrated assembler supports .object_arch from llvm 3.5
5702     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5703         check_as as_object_arch ".object_arch armv4"
5704
5705     # MS armasm fails to assemble our PIC constructs
5706     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5707
5708 elif enabled mips; then
5709
5710     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5711     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5712     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5713
5714     # Enable minimum ISA based on selected options
5715     if enabled mips64; then
5716         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5717         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5718         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5719     else
5720         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5721         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5722         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5723         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5724     fi
5725
5726     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5727     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5728     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5729     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5730     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5731
5732     if enabled bigendian && enabled msa; then
5733         disable msa
5734     fi
5735
5736 elif enabled parisc; then
5737
5738     if enabled gcc; then
5739         case $($cc -dumpversion) in
5740             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5741         esac
5742     fi
5743
5744 elif enabled ppc; then
5745
5746     enable local_aligned
5747
5748     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5749     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5750     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5751     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5752
5753     if enabled altivec; then
5754         check_cflags -maltivec -mabi=altivec
5755
5756         # check if our compiler supports Motorola AltiVec C API
5757         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5758                                     vector signed int v2 = (vector signed int) { 1 };
5759                                     v1 = vec_add(v1, v2);"
5760
5761         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5762     fi
5763
5764     if enabled vsx; then
5765         check_cflags -mvsx &&
5766         check_cc vsx altivec.h "int v[4] = { 0 };
5767                                 vector signed int v1 = vec_vsx_ld(0, v);"
5768     fi
5769
5770     if enabled power8; then
5771         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5772     fi
5773
5774 elif enabled x86; then
5775
5776     check_builtin rdtsc    intrin.h   "__rdtsc()"
5777     check_builtin mm_empty mmintrin.h "_mm_empty()"
5778
5779     enable local_aligned
5780
5781     # check whether EBP is available on x86
5782     # As 'i' is stored on the stack, this program will crash
5783     # if the base pointer is used to access it because the
5784     # base pointer is cleared in the inline assembly code.
5785     check_exec_crash <<EOF && enable ebp_available
5786 volatile int i=0;
5787 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5788 return i;
5789 EOF
5790
5791     # check whether EBX is available on x86
5792     check_inline_asm ebx_available '""::"b"(0)' &&
5793         check_inline_asm ebx_available '"":::"%ebx"'
5794
5795     # check whether xmm clobbers are supported
5796     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5797
5798     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5799         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5800
5801     # check whether binutils is new enough to compile SSSE3/MMXEXT
5802     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5803     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5804
5805     probe_x86asm(){
5806         x86asmexe_probe=$1
5807         if test_cmd $x86asmexe_probe -v; then
5808             x86asmexe=$x86asmexe_probe
5809             x86asm_type=nasm
5810             x86asm_debug="-g -F dwarf"
5811             X86ASMDEP=
5812             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5813         elif test_cmd $x86asmexe_probe --version; then
5814             x86asmexe=$x86asmexe_probe
5815             x86asm_type=yasm
5816             x86asm_debug="-g dwarf2"
5817             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5818             X86ASM_DEPFLAGS=
5819         fi
5820         check_x86asm x86asm "movbe ecx, [5]"
5821     }
5822
5823     if ! disabled_any asm mmx x86asm; then
5824         disable x86asm
5825         for program in $x86asmexe nasm yasm; do
5826             probe_x86asm $program && break
5827         done
5828         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5829         X86ASMFLAGS="-f $objformat"
5830         enabled pic               && append X86ASMFLAGS "-DPIC"
5831         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5832         case "$objformat" in
5833             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5834         esac
5835
5836         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5837         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5838         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5839         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5840         check_x86asm cpunop          "CPU amdnop"
5841     fi
5842
5843     case "$cpu" in
5844         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5845             disable fast_clz
5846         ;;
5847     esac
5848
5849 fi
5850
5851 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5852
5853 check_ldflags -Wl,--as-needed
5854 check_ldflags -Wl,-z,noexecstack
5855
5856 if ! disabled network; then
5857     check_func getaddrinfo $network_extralibs
5858     check_func inet_aton $network_extralibs
5859
5860     check_type netdb.h "struct addrinfo"
5861     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5862     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5863     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5864     check_type poll.h "struct pollfd"
5865     check_type netinet/sctp.h "struct sctp_event_subscribe"
5866     check_struct "sys/socket.h" "struct msghdr" msg_flags
5867     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5868     check_type netinet/in.h "struct sockaddr_in6"
5869     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5870     check_type "sys/types.h sys/socket.h" socklen_t
5871
5872     # Prefer arpa/inet.h over winsock2
5873     if check_headers arpa/inet.h ; then
5874         check_func closesocket
5875     elif check_headers winsock2.h ; then
5876         check_func_headers winsock2.h closesocket -lws2 &&
5877             network_extralibs="-lws2" ||
5878         { check_func_headers winsock2.h closesocket -lws2_32 &&
5879             network_extralibs="-lws2_32"; } || disable winsock2_h network
5880         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5881
5882         check_type ws2tcpip.h socklen_t
5883         check_type ws2tcpip.h "struct addrinfo"
5884         check_type ws2tcpip.h "struct group_source_req"
5885         check_type ws2tcpip.h "struct ip_mreq_source"
5886         check_type ws2tcpip.h "struct ipv6_mreq"
5887         check_type winsock2.h "struct pollfd"
5888         check_struct winsock2.h "struct sockaddr" sa_len
5889         check_type ws2tcpip.h "struct sockaddr_in6"
5890         check_type ws2tcpip.h "struct sockaddr_storage"
5891     else
5892         disable network
5893     fi
5894 fi
5895
5896 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5897 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5898 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5899 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5900 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5901 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5902 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5903
5904 case "$custom_allocator" in
5905     jemalloc)
5906         # jemalloc by default does not use a prefix
5907         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5908     ;;
5909     tcmalloc)
5910         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5911         malloc_prefix=tc_
5912     ;;
5913 esac
5914
5915 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5916 check_func  ${malloc_prefix}memalign            && enable memalign
5917 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5918
5919 check_func  access
5920 check_func_headers stdlib.h arc4random
5921 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5922 check_func  fcntl
5923 check_func  fork
5924 check_func  gethrtime
5925 check_func  getopt
5926 check_func  getrusage
5927 check_func  gettimeofday
5928 check_func  isatty
5929 check_func  mkstemp
5930 check_func  mmap
5931 check_func  mprotect
5932 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5933 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5934 check_func  sched_getaffinity
5935 check_func  setrlimit
5936 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5937 check_func  strerror_r
5938 check_func  sysconf
5939 check_func  sysctl
5940 check_func  usleep
5941
5942 check_func_headers conio.h kbhit
5943 check_func_headers io.h setmode
5944 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5945 check_func_headers mach/mach_time.h mach_absolute_time
5946 check_func_headers stdlib.h getenv
5947 check_func_headers sys/stat.h lstat
5948
5949 check_func_headers windows.h GetProcessAffinityMask
5950 check_func_headers windows.h GetProcessTimes
5951 check_func_headers windows.h GetSystemTimeAsFileTime
5952 check_func_headers windows.h LoadLibrary
5953 check_func_headers windows.h MapViewOfFile
5954 check_func_headers windows.h PeekNamedPipe
5955 check_func_headers windows.h SetConsoleTextAttribute
5956 check_func_headers windows.h SetConsoleCtrlHandler
5957 check_func_headers windows.h Sleep
5958 check_func_headers windows.h VirtualAlloc
5959 check_func_headers glob.h glob
5960 enabled xlib &&
5961     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5962
5963 check_headers direct.h
5964 check_headers dirent.h
5965 check_headers dxgidebug.h
5966 check_headers dxva.h
5967 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5968 check_headers io.h
5969 check_headers linux/perf_event.h
5970 check_headers libcrystalhd/libcrystalhd_if.h
5971 check_headers malloc.h
5972 check_headers net/udplite.h
5973 check_headers poll.h
5974 check_headers sys/param.h
5975 check_headers sys/resource.h
5976 check_headers sys/select.h
5977 check_headers sys/time.h
5978 check_headers sys/un.h
5979 check_headers termios.h
5980 check_headers unistd.h
5981 check_headers valgrind/valgrind.h
5982 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5983 check_headers windows.h
5984 check_headers X11/extensions/XvMClib.h
5985 check_headers asm/types.h
5986
5987 # it seems there are versions of clang in some distros that try to use the
5988 # gcc headers, which explodes for stdatomic
5989 # so we also check that atomics actually work here
5990 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5991
5992 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5993 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5994     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5995 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5996 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5997 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5998
5999 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6000 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6001 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6002
6003 enabled appkit       && check_apple_framework AppKit
6004 enabled audiotoolbox && check_apple_framework AudioToolbox
6005 enabled avfoundation && check_apple_framework AVFoundation
6006 enabled coreimage    && check_apple_framework CoreImage
6007 enabled videotoolbox && check_apple_framework VideoToolbox
6008
6009 check_apple_framework CoreFoundation
6010 check_apple_framework CoreMedia
6011 check_apple_framework CoreVideo
6012
6013 enabled avfoundation && {
6014     disable coregraphics applicationservices
6015     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6016     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6017
6018 enabled videotoolbox && {
6019     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6020     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6021 }
6022
6023 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6024
6025 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6026 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6027 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6028 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6029 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6030
6031 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6032 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6033 check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6034 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6035 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6036 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6037 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6038
6039 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6040
6041 if enabled cuda_sdk; then
6042     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6043     enable cuda_nvcc
6044 fi
6045
6046 if ! disabled ffnvcodec; then
6047     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6048     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6049       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6050       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6051       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6052 fi
6053
6054 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6055
6056 if ! disabled w32threads && ! enabled pthreads; then
6057     check_func_headers "windows.h process.h" _beginthreadex &&
6058         check_type "windows.h" CONDITION_VARIABLE &&
6059         check_type "windows.h" INIT_ONCE &&
6060         enable w32threads || disable w32threads
6061     if ! enabled w32threads && enabled winrt; then
6062         check_func_headers "windows.h" CreateThread &&
6063             enable w32threads || disable w32threads
6064     fi
6065 fi
6066
6067 # check for some common methods of building with pthread support
6068 # do this before the optional library checks as some of them require pthreads
6069 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6070     if check_lib pthreads pthread.h pthread_join   -pthread &&
6071        check_lib pthreads pthread.h pthread_create -pthread; then
6072         add_cflags -pthread
6073     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6074          check_lib pthreads pthread.h pthread_create -pthreads; then
6075         add_cflags -pthreads
6076     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6077          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6078         add_cflags -ldl -pthread
6079     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6080          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6081         :
6082     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6083          check_lib pthreads pthread.h pthread_create -lpthread; then
6084         :
6085     elif check_func pthread_join && check_func pthread_create; then
6086         enable pthreads
6087     fi
6088     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6089
6090     if enabled pthreads; then
6091         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6092         check_func pthread_cancel $pthreads_extralibs
6093     fi
6094 fi
6095
6096 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6097                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6098 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6099 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6100
6101 # On some systems dynamic loading requires no extra linker flags
6102 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6103
6104 check_lib libm math.h sin -lm
6105
6106 atan2f_args=2
6107 copysign_args=2
6108 hypot_args=2
6109 ldexpf_args=2
6110 powf_args=2
6111
6112 for func in $MATH_FUNCS; do
6113     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6114 done
6115
6116 for func in $COMPLEX_FUNCS; do
6117     eval check_complexfunc $func \${${func}_args:-1}
6118 done
6119
6120 # these are off by default, so fail if requested and not available
6121 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6122 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6123 enabled decklink          && { require_headers DeckLinkAPI.h &&
6124                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6125 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6126 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6127 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6128 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6129 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6130 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6131 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6132 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6133                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6134                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6135 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6136 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6137 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6138 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6139 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6140 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6141                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6142                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6143 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6144 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6145 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6146 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6147 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6148 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6149 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6150                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6151                                  warn "using libfdk without pkg-config"; } }
6152 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
6153 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6154 enabled fontconfig        && enable libfontconfig
6155 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6156 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6157 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6158 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6159                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6160 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6161                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6162                                done || die "ERROR: libgsm not found"; }
6163 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6164 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6165 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6166 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6167 # While it may appear that require is being used as a pkg-config
6168 # fallback for libmfx, it is actually being used to detect a different
6169 # installation route altogether.  If libmfx is installed via the Intel
6170 # Media SDK or Intel Media Server Studio, these don't come with
6171 # pkg-config support.  Instead, users should make sure that the build
6172 # can find the libraries and headers through other means.
6173 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6174                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6175 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6176 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6177 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6178                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6179 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6180                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6181                                die "ERROR: libnpp not found"; }
6182 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6183 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6184 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6185                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6186                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6187                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6188 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6189 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6190                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6191 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6192 enabled libopus           && {
6193     enabled libopus_decoder && {
6194         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6195     }
6196     enabled libopus_encoder && {
6197         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6198     }
6199 }
6200 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6201 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6202 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6203 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6204 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6205 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6206                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6207 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6208 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6209 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6210 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6211 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6212 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6213 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6214 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6215 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6216 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6217                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6218                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6219 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6220 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6221 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6222 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6223 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6224                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6225
6226 enabled libvpx            && {
6227     enabled libvpx_vp8_decoder && {
6228         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6229             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6230     }
6231     enabled libvpx_vp8_encoder && {
6232         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6233             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6234     }
6235     enabled libvpx_vp9_decoder && {
6236         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6237             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6238     }
6239     enabled libvpx_vp9_encoder && {
6240         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6241             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6242     }
6243     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6244         die "libvpx enabled but no supported decoders found"
6245     fi
6246 }
6247
6248 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6249 enabled libwebp           && {
6250     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6251     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6252 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6253                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6254                                  warn "using libx264 without pkg-config"; } } &&
6255                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6256                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6257 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6258                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6259 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6260 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6261 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6262 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6263 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6264 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6265                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6266                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6267 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6268 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6269                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6270                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6271                                die "ERROR: mbedTLS not found"; }
6272 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6273 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6274                                { ! enabled cross_compile &&
6275                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6276                                  add_ldflags -L/opt/vc/lib/ &&
6277                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6278                                die "ERROR: mmal not found" &&
6279                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6280 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6281                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6282                                die "ERROR: openal not found"; } &&
6283                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6284                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6285 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6286                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6287                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6288                                die "ERROR: opencl not found"; } &&
6289                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6290                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6291                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6292 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6293                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6294                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6295                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6296                                die "ERROR: opengl not found."
6297                              }
6298 enabled omx               && require_headers OMX_Core.h
6299 enabled omx_rpi           && { check_headers OMX_Core.h ||
6300                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6301                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6302 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6303                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6304                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6305                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6306                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6307                                die "ERROR: openssl not found"; }
6308 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6309                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6310                                { enabled libdrm ||
6311                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6312                              }
6313 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6314
6315
6316 if enabled gcrypt; then
6317     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6318     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6319         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6320         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6321         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6322             die "ERROR: gcrypt not found"
6323         add_cflags $gcrypt_cflags
6324     else
6325         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6326     fi
6327 fi
6328
6329 if enabled sdl2; then
6330     SDL2_CONFIG="${cross_prefix}sdl2-config"
6331     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6332     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6333         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6334         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6335         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6336         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6337         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6338             enable sdl2
6339     fi
6340     if test $target_os = "mingw32"; then
6341         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6342     fi
6343 fi
6344
6345 if enabled decklink; then
6346     case $target_os in
6347         mingw32*|mingw64*|win32|win64)
6348             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6349             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6350             ;;
6351     esac
6352 fi
6353
6354 enabled securetransport &&
6355     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6356     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6357         disable securetransport
6358
6359 enabled securetransport &&
6360     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6361
6362 enabled schannel &&
6363     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6364     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6365     schannel_extralibs="-lsecur32" ||
6366         disable schannel
6367
6368 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6369 enabled makeinfo \
6370     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6371     && enable makeinfo_html || disable makeinfo_html
6372 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6373 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6374 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6375 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6376
6377 # check V4L2 codecs available in the API
6378 check_headers linux/fb.h
6379 check_headers linux/videodev2.h
6380 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6381 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6382 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6383 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6384 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6385 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6386 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6387 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6388 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6389 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6390 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6391
6392 check_headers sys/videoio.h
6393 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6394
6395 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6396 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6397 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6398 # w32api 3.12 had it defined wrong
6399 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6400
6401 check_type "dshow.h" IBaseFilter
6402
6403 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6404 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6405     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6406     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6407     check_headers "dev/ic/bt8xx.h"
6408
6409 if check_struct sys/soundcard.h audio_buf_info bytes; then
6410     enable_sanitized sys/soundcard.h
6411 else
6412     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6413     #include <sys/soundcard.h>
6414     audio_buf_info abc;
6415 EOF
6416 fi
6417
6418 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6419     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6420
6421 enabled libjack &&
6422     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6423
6424 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6425
6426 if enabled libcdio; then
6427     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6428     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6429     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6430     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6431     die "ERROR: No usable libcdio/cdparanoia found"
6432 fi
6433
6434 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6435     disable libxcb_shm libxcb_shape libxcb_xfixes
6436
6437 if enabled libxcb; then
6438     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6439     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6440     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6441 fi
6442
6443 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6444
6445 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6446 # the desktop api partition
6447 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6448 #ifdef WINAPI_FAMILY
6449 #include <winapifamily.h>
6450 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6451 #error desktop, not uwp
6452 #else
6453 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6454 #endif
6455 #else
6456 #error no family set
6457 #endif
6458 EOF
6459
6460 enabled vaapi &&
6461     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6462
6463 if enabled vaapi; then
6464     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6465
6466     if enabled xlib; then
6467         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6468     fi
6469
6470     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6471 fi
6472
6473 if enabled_all opencl libdrm ; then
6474     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6475         enable opencl_drm_beignet
6476     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6477         enable opencl_drm_arm
6478 fi
6479
6480 if enabled_all opencl vaapi ; then
6481     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6482     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6483         enable opencl_vaapi_intel_media
6484 fi
6485
6486 if enabled_all opencl dxva2 ; then
6487     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6488         enable opencl_dxva2
6489 fi
6490
6491 if enabled_all opencl d3d11va ; then
6492     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6493         enable opencl_d3d11
6494 fi
6495
6496 enabled vdpau &&
6497     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6498
6499 enabled vdpau &&
6500     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6501
6502 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6503
6504 if enabled x86; then
6505     case $target_os in
6506         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6507             ;;
6508         *)
6509             disable ffnvcodec cuvid nvdec nvenc
6510             ;;
6511     esac
6512 else
6513     disable ffnvcodec cuvid nvdec nvenc
6514 fi
6515
6516 enabled ffnvcodec && enable cuda
6517
6518 enabled nvenc &&
6519     test_cc -I$source_path <<EOF || disable nvenc
6520 #include <ffnvcodec/nvEncodeAPI.h>
6521 NV_ENCODE_API_FUNCTION_LIST flist;
6522 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6523 int main(void) { return 0; }
6524 EOF
6525
6526 enabled amf &&
6527     check_cpp_condition amf "AMF/core/Version.h" \
6528         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6529
6530 # Funny iconv installations are not unusual, so check it after all flags have been set
6531 if enabled libc_iconv; then
6532     check_func_headers iconv.h iconv
6533 elif enabled iconv; then
6534     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6535 fi
6536
6537 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6538
6539 # add some useful compiler flags if supported
6540 check_cflags -Wdeclaration-after-statement
6541 check_cflags -Wall
6542 check_cflags -Wdisabled-optimization
6543 check_cflags -Wpointer-arith
6544 check_cflags -Wredundant-decls
6545 check_cflags -Wwrite-strings
6546 check_cflags -Wtype-limits
6547 check_cflags -Wundef
6548 check_cflags -Wmissing-prototypes
6549 check_cflags -Wno-pointer-to-int-cast
6550 check_cflags -Wstrict-prototypes
6551 check_cflags -Wempty-body
6552
6553 if enabled extra_warnings; then
6554     check_cflags -Wcast-qual
6555     check_cflags -Wextra
6556     check_cflags -Wpedantic
6557 fi
6558
6559 check_disable_warning(){
6560     warning_flag=-W${1#-Wno-}
6561     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6562 }
6563
6564 test_cflags -Werror=unused-command-line-argument &&
6565     append unknown_warning_flags "-Werror=unused-command-line-argument"
6566 test_cflags -Werror=unknown-warning-option &&
6567     append unknown_warning_flags "-Werror=unknown-warning-option"
6568
6569 check_disable_warning -Wno-parentheses
6570 check_disable_warning -Wno-switch
6571 check_disable_warning -Wno-format-zero-length
6572 check_disable_warning -Wno-pointer-sign
6573 check_disable_warning -Wno-unused-const-variable
6574 check_disable_warning -Wno-bool-operation
6575 check_disable_warning -Wno-char-subscripts
6576
6577 check_disable_warning_headers(){
6578     warning_flag=-W${1#-Wno-}
6579     test_cflags $warning_flag && add_cflags_headers $1
6580 }
6581
6582 check_disable_warning_headers -Wno-deprecated-declarations
6583 check_disable_warning_headers -Wno-unused-variable
6584
6585 test_cc <<EOF && enable blocks_extension
6586 void (^block)(void);
6587 EOF
6588
6589 # add some linker flags
6590 check_ldflags -Wl,--warn-common
6591 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6592 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6593 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6594
6595 # add some strip flags
6596 check_stripflags -x
6597
6598 enabled neon_clobber_test &&
6599     check_ldflags -Wl,--wrap,avcodec_open2              \
6600                   -Wl,--wrap,avcodec_decode_audio4      \
6601                   -Wl,--wrap,avcodec_decode_video2      \
6602                   -Wl,--wrap,avcodec_decode_subtitle2   \
6603                   -Wl,--wrap,avcodec_encode_audio2      \
6604                   -Wl,--wrap,avcodec_encode_video2      \
6605                   -Wl,--wrap,avcodec_encode_subtitle    \
6606                   -Wl,--wrap,avcodec_send_packet        \
6607                   -Wl,--wrap,avcodec_receive_packet     \
6608                   -Wl,--wrap,avcodec_send_frame         \
6609                   -Wl,--wrap,avcodec_receive_frame      \
6610                   -Wl,--wrap,swr_convert                \
6611                   -Wl,--wrap,avresample_convert ||
6612     disable neon_clobber_test
6613
6614 enabled xmm_clobber_test &&
6615     check_ldflags -Wl,--wrap,avcodec_open2              \
6616                   -Wl,--wrap,avcodec_decode_audio4      \
6617                   -Wl,--wrap,avcodec_decode_video2      \
6618                   -Wl,--wrap,avcodec_decode_subtitle2   \
6619                   -Wl,--wrap,avcodec_encode_audio2      \
6620                   -Wl,--wrap,avcodec_encode_video2      \
6621                   -Wl,--wrap,avcodec_encode_subtitle    \
6622                   -Wl,--wrap,avcodec_send_packet        \
6623                   -Wl,--wrap,avcodec_receive_packet     \
6624                   -Wl,--wrap,avcodec_send_frame         \
6625                   -Wl,--wrap,avcodec_receive_frame      \
6626                   -Wl,--wrap,swr_convert                \
6627                   -Wl,--wrap,avresample_convert         \
6628                   -Wl,--wrap,sws_scale ||
6629     disable xmm_clobber_test
6630
6631 check_ld "cc" proper_dce <<EOF
6632 extern const int array[512];
6633 static inline int func(void) { return array[0]; }
6634 int main(void) { return 0; }
6635 EOF
6636
6637 if enabled proper_dce; then
6638     echo "X { local: *; };" > $TMPV
6639     if test_ldflags -Wl,${version_script},$TMPV; then
6640         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6641         quotes='""'
6642         test_cc <<EOF && enable symver_asm_label
6643 void ff_foo(void) __asm__ ("av_foo@VERSION");
6644 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6645 EOF
6646         test_cc <<EOF && enable symver_gnu_asm
6647 __asm__(".symver ff_foo,av_foo@VERSION");
6648 void ff_foo(void) {}
6649 EOF
6650     fi
6651 fi
6652
6653 if [ -z "$optflags" ]; then
6654     if enabled small; then
6655         optflags=$cflags_size
6656     elif enabled optimizations; then
6657         optflags=$cflags_speed
6658     else
6659         optflags=$cflags_noopt
6660     fi
6661 fi
6662
6663 if [ -z "$nvccflags" ]; then
6664     nvccflags=$nvccflags_default
6665 fi
6666
6667 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6668     nvccflags="$nvccflags -m64"
6669 else
6670     nvccflags="$nvccflags -m32"
6671 fi
6672
6673 check_optflags(){
6674     check_cflags "$@"
6675     enabled lto && check_ldflags "$@"
6676 }
6677
6678 check_optflags $optflags
6679 check_optflags -fno-math-errno
6680 check_optflags -fno-signed-zeros
6681
6682 if enabled lto; then
6683     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6684     check_cflags  -flto
6685     check_ldflags -flto $cpuflags
6686     disable inline_asm_direct_symbol_refs
6687 fi
6688
6689 enabled ftrapv && check_cflags -ftrapv
6690
6691 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6692 int x;
6693 EOF
6694
6695
6696 if enabled icc; then
6697     # Just warnings, no remarks
6698     check_cflags -w1
6699     # -wd: Disable following warnings
6700     # 144, 167, 556: -Wno-pointer-sign
6701     # 188: enumerated type mixed with another type
6702     # 1292: attribute "foo" ignored
6703     # 1419: external declaration in primary source file
6704     # 10006: ignoring unknown option -fno-signed-zeros
6705     # 10148: ignoring unknown option -Wno-parentheses
6706     # 10156: ignoring option '-W'; no argument required
6707     # 13200: No EMMS instruction before call to function
6708     # 13203: No EMMS instruction before return from function
6709     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6710     # 11030: Warning unknown option --as-needed
6711     # 10156: ignoring option '-export'; no argument required
6712     check_ldflags -wd10156,11030
6713     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6714     enable ebp_available
6715     # The test above does not test linking
6716     enabled lto && disable symver_asm_label
6717     if enabled x86_32; then
6718         icc_version=$($cc -dumpversion)
6719         test ${icc_version%%.*} -ge 11 &&
6720             check_cflags -falign-stack=maintain-16-byte ||
6721             disable aligned_stack
6722     fi
6723 elif enabled gcc; then
6724     check_optflags -fno-tree-vectorize
6725     check_cflags -Werror=format-security
6726     check_cflags -Werror=implicit-function-declaration
6727     check_cflags -Werror=missing-prototypes
6728     check_cflags -Werror=return-type
6729     check_cflags -Werror=vla
6730     check_cflags -Wformat
6731     check_cflags -fdiagnostics-color=auto
6732     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6733     if enabled x86_32; then
6734         case $target_os in
6735         *bsd*)
6736             # BSDs don't guarantee a 16 byte aligned stack, but we can
6737             # request GCC to try to maintain 16 byte alignment throughout
6738             # function calls. Library entry points that might call assembly
6739             # functions align the stack. (The parameter means 2^4 bytes.)
6740             check_cflags -mpreferred-stack-boundary=4
6741             ;;
6742         esac
6743     fi
6744 elif enabled llvm_gcc; then
6745     check_cflags -mllvm -stack-alignment=16
6746 elif enabled clang; then
6747     if enabled x86_32; then
6748         # Clang doesn't support maintaining alignment without assuming the
6749         # same alignment in every function. If 16 byte alignment would be
6750         # enabled, one would also have to either add attribute_align_arg on
6751         # every single entry point into the libraries or enable -mstackrealign
6752         # (doing stack realignment in every single function).
6753         case $target_os in
6754         mingw32|win32|*bsd*)
6755             disable aligned_stack
6756             ;;
6757         *)
6758             check_cflags -mllvm -stack-alignment=16
6759             check_cflags -mstack-alignment=16
6760             ;;
6761         esac
6762     else
6763         check_cflags -mllvm -stack-alignment=16
6764         check_cflags -mstack-alignment=16
6765     fi
6766     check_cflags -Qunused-arguments
6767     check_cflags -Werror=implicit-function-declaration
6768     check_cflags -Werror=missing-prototypes
6769     check_cflags -Werror=return-type
6770 elif enabled cparser; then
6771     add_cflags -Wno-missing-variable-declarations
6772     add_cflags -Wno-empty-statement
6773 elif enabled armcc; then
6774     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6775     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6776     # 2523: use of inline assembly is deprecated
6777     add_cflags -W${armcc_opt},--diag_suppress=2523
6778     add_cflags -W${armcc_opt},--diag_suppress=1207
6779     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6780     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6781     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6782     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6783 elif enabled pathscale; then
6784     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6785     disable inline_asm
6786 elif enabled_any msvc icl; then
6787     enabled x86_32 && disable aligned_stack
6788     enabled_all x86_32 debug && add_cflags -Oy-
6789     enabled debug && add_ldflags -debug
6790     enable pragma_deprecated
6791     if enabled icl; then
6792         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6793         # (correctly) on icl 13.x.
6794         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6795             add_cflags -Qansi-alias
6796         # Some inline asm is not compilable in debug
6797         if enabled debug; then
6798             disable ebp_available
6799             disable ebx_available
6800         fi
6801     fi
6802     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6803     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6804     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6805     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6806     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6807     # MSVC 2013 and newer can handle it fine.
6808     # If this declspec fails, force including stdlib.h before the restrict redefinition
6809     # happens in config.h.
6810     if [ $restrict_keyword != restrict ]; then
6811         test_cc <<EOF || add_cflags -FIstdlib.h
6812 __declspec($restrict_keyword) void *foo(int);
6813 EOF
6814     fi
6815     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6816     # Issue has been fixed in MSVC v19.00.24218.
6817     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6818         check_cflags -d2SSAOptimizer-
6819     # enable utf-8 source processing on VS2015 U2 and newer
6820     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6821         add_cflags -utf-8
6822 fi
6823
6824 for pfx in "" host_; do
6825     varname=${pfx%_}cc_type
6826     eval "type=\$$varname"
6827     if [ "$type" = "msvc" ]; then
6828         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6829 static inline int foo(int a) { return a; }
6830 EOF
6831     fi
6832 done
6833
6834 case $as_type in
6835     clang)
6836         add_asflags -Qunused-arguments
6837     ;;
6838 esac
6839
6840 case $ld_type in
6841     clang)
6842         check_ldflags -Qunused-arguments
6843     ;;
6844 esac
6845
6846 enable frame_thread_encoder
6847
6848 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6849
6850 check_deps $CONFIG_LIST       \
6851            $CONFIG_EXTRA      \
6852            $HAVE_LIST         \
6853            $ALL_COMPONENTS    \
6854
6855 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"
6856 enabled avresample && warn "Building with deprecated library libavresample"
6857
6858 case $target_os in
6859 haiku)
6860     disable memalign
6861     disable posix_memalign
6862     ;;
6863 *-dos|freedos|opendos)
6864     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6865         disable memalign
6866     fi
6867     ;;
6868 esac
6869
6870 flatten_extralibs(){
6871     nested_entries=
6872     list_name=$1
6873     eval list=\$${1}
6874     for entry in $list; do
6875         entry_copy=$entry
6876         resolve entry_copy
6877         flat_entries=
6878         for e in $entry_copy; do
6879             case $e in
6880                 *_extralibs) nested_entries="$nested_entries$e ";;
6881                           *) flat_entries="$flat_entries$e ";;
6882             esac
6883         done
6884         eval $entry="\$flat_entries"
6885     done
6886     append $list_name "$nested_entries"
6887
6888     resolve nested_entries
6889     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6890         flatten_extralibs $list_name
6891     fi
6892 }
6893
6894 flatten_extralibs_wrapper(){
6895     list_name=$1
6896     flatten_extralibs $list_name
6897     unique $list_name
6898     resolve $list_name
6899     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6900     eval printf \''%s'\' \""\$$list_name"\"
6901 }
6902
6903 for linkunit in $LIBRARY_LIST; do
6904     unset current_extralibs
6905     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6906     for comp in ${components}; do
6907         enabled $comp || continue
6908         comp_extralibs="${comp}_extralibs"
6909         append current_extralibs $comp_extralibs
6910     done
6911     eval prepend ${linkunit}_extralibs $current_extralibs
6912 done
6913
6914 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6915     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6916 done
6917
6918 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6919
6920 for thread in $THREADS_LIST; do
6921     if enabled $thread; then
6922         test -n "$thread_type" &&
6923             die "ERROR: Only one thread type must be selected." ||
6924             thread_type="$thread"
6925     fi
6926 done
6927
6928 if disabled stdatomic; then
6929     if enabled atomics_gcc; then
6930         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6931     elif enabled atomics_win32; then
6932         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6933     elif enabled atomics_suncc; then
6934         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6935     elif enabled pthreads; then
6936         add_compat atomics/pthread/stdatomic.o
6937         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6938     else
6939         enabled threads && die "Threading is enabled, but no atomics are available"
6940         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6941     fi
6942 fi
6943
6944 # Check if requested libraries were found.
6945 for lib in $AUTODETECT_LIBS; do
6946     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6947 done
6948
6949 enabled zlib && add_cppflags -DZLIB_CONST
6950
6951 # conditional library dependencies, in any order
6952 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6953 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6954 enabled afir_filter         && prepend avfilter_deps "avcodec"
6955 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6956 enabled aresample_filter    && prepend avfilter_deps "swresample"
6957 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6958 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6959 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6960 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6961 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6962 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6963 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6964 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6965 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6966 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6967 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6968 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6969 enabled pan_filter          && prepend avfilter_deps "swresample"
6970 enabled pp_filter           && prepend avfilter_deps "postproc"
6971 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6972 enabled resample_filter && prepend avfilter_deps "avresample"
6973 enabled sab_filter          && prepend avfilter_deps "swscale"
6974 enabled scale_filter    && prepend avfilter_deps "swscale"
6975 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6976 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6977 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6978 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6979 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6980 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6981 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6982 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6983 enabled spp_filter          && prepend avfilter_deps "avcodec"
6984 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6985 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6986 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6987 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6988
6989 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6990
6991 #FIXME
6992 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6993     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6994
6995 enabled opus_decoder    && prepend avcodec_deps "swresample"
6996
6997 # reorder the items at var $1 to align with the items order at var $2 .
6998 # die if an item at $1 is not at $2 .
6999 reorder_by(){
7000     eval rb_in=\$$1
7001     eval rb_ordered=\$$2
7002
7003     for rb in $rb_in; do
7004         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7005     done
7006
7007     rb_out=
7008     for rb in $rb_ordered; do
7009         is_in $rb $rb_in && rb_out="$rb_out$rb "
7010     done
7011     eval $1=\$rb_out
7012 }
7013
7014 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7015 # within a set of N items, N expansions are enough to expose a cycle.
7016 expand_deps(){
7017     unique ${1}_deps  # required for the early break test.
7018     for dummy in $LIBRARY_LIST; do  # N iteratios
7019         eval deps=\$${1}_deps
7020         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7021         unique ${1}_deps
7022         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7023     done
7024
7025     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7026     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7027 }
7028
7029 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7030 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7031
7032 map 'expand_deps $v' $LIBRARY_LIST
7033
7034 if test "$quiet" != "yes"; then
7035
7036 echo "install prefix            $prefix"
7037 echo "source path               $source_path"
7038 echo "C compiler                $cc"
7039 echo "C library                 $libc_type"
7040 if test "$host_cc" != "$cc"; then
7041     echo "host C compiler           $host_cc"
7042     echo "host C library            $host_libc_type"
7043 fi
7044 echo "ARCH                      $arch ($cpu)"
7045 if test "$build_suffix" != ""; then
7046     echo "build suffix              $build_suffix"
7047 fi
7048 if test "$progs_suffix" != ""; then
7049     echo "progs suffix              $progs_suffix"
7050 fi
7051 if test "$extra_version" != ""; then
7052     echo "version string suffix     $extra_version"
7053 fi
7054 echo "big-endian                ${bigendian-no}"
7055 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7056 if enabled x86; then
7057     echo "standalone assembly       ${x86asm-no}"
7058     echo "x86 assembler             ${x86asmexe}"
7059     echo "MMX enabled               ${mmx-no}"
7060     echo "MMXEXT enabled            ${mmxext-no}"
7061     echo "3DNow! enabled            ${amd3dnow-no}"
7062     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7063     echo "SSE enabled               ${sse-no}"
7064     echo "SSSE3 enabled             ${ssse3-no}"
7065     echo "AESNI enabled             ${aesni-no}"
7066     echo "AVX enabled               ${avx-no}"
7067     echo "AVX2 enabled              ${avx2-no}"
7068     echo "AVX-512 enabled           ${avx512-no}"
7069     echo "XOP enabled               ${xop-no}"
7070     echo "FMA3 enabled              ${fma3-no}"
7071     echo "FMA4 enabled              ${fma4-no}"
7072     echo "i686 features enabled     ${i686-no}"
7073     echo "CMOV is fast              ${fast_cmov-no}"
7074     echo "EBX available             ${ebx_available-no}"
7075     echo "EBP available             ${ebp_available-no}"
7076 fi
7077 if enabled aarch64; then
7078     echo "NEON enabled              ${neon-no}"
7079     echo "VFP enabled               ${vfp-no}"
7080 fi
7081 if enabled arm; then
7082     echo "ARMv5TE enabled           ${armv5te-no}"
7083     echo "ARMv6 enabled             ${armv6-no}"
7084     echo "ARMv6T2 enabled           ${armv6t2-no}"
7085     echo "VFP enabled               ${vfp-no}"
7086     echo "NEON enabled              ${neon-no}"
7087     echo "THUMB enabled             ${thumb-no}"
7088 fi
7089 if enabled mips; then
7090     echo "MIPS FPU enabled          ${mipsfpu-no}"
7091     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7092     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7093     echo "MIPS MSA enabled          ${msa-no}"
7094     echo "LOONGSON MMI enabled      ${mmi-no}"
7095 fi
7096 if enabled ppc; then
7097     echo "AltiVec enabled           ${altivec-no}"
7098     echo "VSX enabled               ${vsx-no}"
7099     echo "POWER8 enabled            ${power8-no}"
7100     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7101     echo "dcbzl available           ${dcbzl-no}"
7102 fi
7103 echo "debug symbols             ${debug-no}"
7104 echo "strip symbols             ${stripping-no}"
7105 echo "optimize for size         ${small-no}"
7106 echo "optimizations             ${optimizations-no}"
7107 echo "static                    ${static-no}"
7108 echo "shared                    ${shared-no}"
7109 echo "postprocessing support    ${postproc-no}"
7110 echo "network support           ${network-no}"
7111 echo "threading support         ${thread_type-no}"
7112 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7113 echo "texi2html enabled         ${texi2html-no}"
7114 echo "perl enabled              ${perl-no}"
7115 echo "pod2man enabled           ${pod2man-no}"
7116 echo "makeinfo enabled          ${makeinfo-no}"
7117 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7118 test -n "$random_seed" &&
7119     echo "random seed               ${random_seed}"
7120 echo
7121
7122 echo "External libraries:"
7123 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7124 echo
7125
7126 echo "External libraries providing hardware acceleration:"
7127 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7128 echo
7129
7130 echo "Libraries:"
7131 print_enabled '' $LIBRARY_LIST | print_in_columns
7132 echo
7133
7134 echo "Programs:"
7135 print_enabled '' $PROGRAM_LIST | print_in_columns
7136 echo
7137
7138 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7139     echo "Enabled ${type}s:"
7140     eval list=\$$(toupper $type)_LIST
7141     print_enabled '_*' $list | print_in_columns
7142     echo
7143 done
7144
7145 if test -n "$ignore_tests"; then
7146     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7147     echo "Ignored FATE tests:"
7148     echo $ignore_tests | print_in_columns
7149     echo
7150 fi
7151
7152 echo "License: $license"
7153
7154 fi # test "$quiet" != "yes"
7155
7156 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7157     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7158         if disabled $cfg; then
7159             varname=${cfg}_disable_reason
7160             eval "warn \"Disabled $cfg because \$$varname\""
7161         fi
7162     done
7163 fi
7164
7165 if test -n "$WARNINGS"; then
7166     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7167     enabled fatal_warnings && exit 1
7168 fi
7169
7170 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7171
7172 esc(){
7173     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7174 }
7175
7176 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7177
7178 enabled stripping || strip="echo skipping strip"
7179 enabled stripping || striptype=""
7180
7181 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7182
7183 cat > ffbuild/config.mak <<EOF
7184 # Automatically generated by configure - do not modify!
7185 ifndef FFMPEG_CONFIG_MAK
7186 FFMPEG_CONFIG_MAK=1
7187 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7188 prefix=$prefix
7189 LIBDIR=\$(DESTDIR)$libdir
7190 SHLIBDIR=\$(DESTDIR)$shlibdir
7191 INCDIR=\$(DESTDIR)$incdir
7192 BINDIR=\$(DESTDIR)$bindir
7193 DATADIR=\$(DESTDIR)$datadir
7194 DOCDIR=\$(DESTDIR)$docdir
7195 MANDIR=\$(DESTDIR)$mandir
7196 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7197 INSTALL_NAME_DIR=$install_name_dir
7198 SRC_PATH=$source_path
7199 SRC_LINK=$source_link
7200 ifndef MAIN_MAKEFILE
7201 SRC_PATH:=\$(SRC_PATH:.%=..%)
7202 endif
7203 CC_IDENT=$cc_ident
7204 ARCH=$arch
7205 INTRINSICS=$intrinsics
7206 EXTERN_PREFIX=$extern_prefix
7207 CC=$cc
7208 CXX=$cxx
7209 AS=$as
7210 OBJCC=$objcc
7211 LD=$ld
7212 DEPCC=$dep_cc
7213 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7214 DEPAS=$as
7215 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7216 X86ASM=$x86asmexe
7217 DEPX86ASM=$x86asmexe
7218 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7219 AR=$ar
7220 ARFLAGS=$arflags
7221 AR_O=$ar_o
7222 AR_CMD=$ar
7223 NM_CMD=$nm
7224 RANLIB=$ranlib
7225 STRIP=$strip
7226 STRIPTYPE=$striptype
7227 NVCC=$nvcc
7228 CP=cp -p
7229 LN_S=$ln_s
7230 CPPFLAGS=$CPPFLAGS
7231 CFLAGS=$CFLAGS
7232 CXXFLAGS=$CXXFLAGS
7233 OBJCFLAGS=$OBJCFLAGS
7234 ASFLAGS=$ASFLAGS
7235 NVCCFLAGS=$nvccflags
7236 AS_C=$AS_C
7237 AS_O=$AS_O
7238 OBJCC_C=$OBJCC_C
7239 OBJCC_E=$OBJCC_E
7240 OBJCC_O=$OBJCC_O
7241 CC_C=$CC_C
7242 CC_E=$CC_E
7243 CC_O=$CC_O
7244 CXX_C=$CXX_C
7245 CXX_O=$CXX_O
7246 NVCC_C=$NVCC_C
7247 NVCC_O=$NVCC_O
7248 LD_O=$LD_O
7249 X86ASM_O=$X86ASM_O
7250 LD_LIB=$LD_LIB
7251 LD_PATH=$LD_PATH
7252 DLLTOOL=$dlltool
7253 WINDRES=$windres
7254 DEPWINDRES=$dep_cc
7255 DOXYGEN=$doxygen
7256 LDFLAGS=$LDFLAGS
7257 LDEXEFLAGS=$LDEXEFLAGS
7258 LDSOFLAGS=$LDSOFLAGS
7259 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7260 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7261 X86ASMFLAGS=$X86ASMFLAGS
7262 BUILDSUF=$build_suffix
7263 PROGSSUF=$progs_suffix
7264 FULLNAME=$FULLNAME
7265 LIBPREF=$LIBPREF
7266 LIBSUF=$LIBSUF
7267 LIBNAME=$LIBNAME
7268 SLIBPREF=$SLIBPREF
7269 SLIBSUF=$SLIBSUF
7270 EXESUF=$EXESUF
7271 EXTRA_VERSION=$extra_version
7272 CCDEP=$CCDEP
7273 CXXDEP=$CXXDEP
7274 CCDEP_FLAGS=$CCDEP_FLAGS
7275 ASDEP=$ASDEP
7276 ASDEP_FLAGS=$ASDEP_FLAGS
7277 X86ASMDEP=$X86ASMDEP
7278 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7279 CC_DEPFLAGS=$CC_DEPFLAGS
7280 AS_DEPFLAGS=$AS_DEPFLAGS
7281 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7282 HOSTCC=$host_cc
7283 HOSTLD=$host_ld
7284 HOSTCFLAGS=$host_cflags
7285 HOSTCPPFLAGS=$host_cppflags
7286 HOSTEXESUF=$HOSTEXESUF
7287 HOSTLDFLAGS=$host_ldflags
7288 HOSTEXTRALIBS=$host_extralibs
7289 DEPHOSTCC=$host_cc
7290 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7291 HOSTCCDEP=$HOSTCCDEP
7292 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7293 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7294 HOSTCC_C=$HOSTCC_C
7295 HOSTCC_O=$HOSTCC_O
7296 HOSTLD_O=$HOSTLD_O
7297 TARGET_EXEC=$target_exec $target_exec_args
7298 TARGET_PATH=$target_path
7299 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7300 CFLAGS-ffplay=${sdl2_cflags}
7301 CFLAGS_HEADERS=$CFLAGS_HEADERS
7302 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7303 EXTRALIBS=$extralibs
7304 COMPAT_OBJS=$compat_objs
7305 INSTALL=$install
7306 LIBTARGET=${LIBTARGET}
7307 SLIBNAME=${SLIBNAME}
7308 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7309 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7310 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7311 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7312 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7313 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7314 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7315 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7316 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7317 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7318 NOREDZONE_FLAGS=$noredzone_flags
7319 LIBFUZZER_PATH=$libfuzzer_path
7320 IGNORE_TESTS=$ignore_tests
7321 EOF
7322
7323 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7324
7325 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7326     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7327 done
7328
7329 cat > $TMPH <<EOF
7330 /* Automatically generated by configure - do not modify! */
7331 #ifndef FFMPEG_CONFIG_H
7332 #define FFMPEG_CONFIG_H
7333 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7334 #define FFMPEG_LICENSE "$(c_escape $license)"
7335 #define CONFIG_THIS_YEAR 2019
7336 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7337 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7338 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7339 #define av_restrict $restrict_keyword
7340 #define EXTERN_PREFIX "${extern_prefix}"
7341 #define EXTERN_ASM ${extern_prefix}
7342 #define BUILDSUF "$build_suffix"
7343 #define SLIBSUF "$SLIBSUF"
7344 #define HAVE_MMX2 HAVE_MMXEXT
7345 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7346 EOF
7347
7348 test -n "$assert_level" &&
7349     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7350
7351 test -n "$malloc_prefix" &&
7352     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7353
7354 if enabled x86asm; then
7355     append config_files $TMPASM
7356     cat > $TMPASM <<EOF
7357 ; Automatically generated by configure - do not modify!
7358 EOF
7359 fi
7360
7361 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7362
7363
7364 mkdir -p doc
7365 mkdir -p tests
7366 mkdir -p tests/api
7367 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7368
7369 print_config ARCH_   "$config_files" $ARCH_LIST
7370 print_config HAVE_   "$config_files" $HAVE_LIST
7371 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7372                                      $CONFIG_EXTRA      \
7373                                      $ALL_COMPONENTS    \
7374
7375 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7376 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7377
7378 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7379 cp_if_changed $TMPH config.h
7380 touch ffbuild/.config
7381
7382 enabled x86asm && cp_if_changed $TMPASM config.asm
7383
7384 cat > $TMPH <<EOF
7385 /* Generated by ffmpeg configure */
7386 #ifndef AVUTIL_AVCONFIG_H
7387 #define AVUTIL_AVCONFIG_H
7388 EOF
7389
7390 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7391
7392 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7393
7394 cp_if_changed $TMPH libavutil/avconfig.h
7395
7396 # full_filter_name_foo=vf_foo
7397 # full_filter_name_bar=asrc_bar
7398 # ...
7399 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7400
7401 # generate the lists of enabled components
7402 print_enabled_components(){
7403     file=$1
7404     struct_name=$2
7405     name=$3
7406     shift 3
7407     echo "static const $struct_name * const $name[] = {" > $TMPH
7408     for c in $*; do
7409         if enabled $c; then
7410             case $name in
7411                 filter_list)
7412                     eval c=\$full_filter_name_${c%_filter}
7413                 ;;
7414                 indev_list)
7415                     c=${c%_indev}_demuxer
7416                 ;;
7417                 outdev_list)
7418                     c=${c%_outdev}_muxer
7419                 ;;
7420             esac
7421             printf "    &ff_%s,\n" $c >> $TMPH
7422         fi
7423     done
7424     if [ "$name" = "filter_list" ]; then
7425         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7426             printf "    &ff_%s,\n" $c >> $TMPH
7427         done
7428     fi
7429     echo "    NULL };" >> $TMPH
7430     cp_if_changed $TMPH $file
7431 }
7432
7433 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7434 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7435 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7436 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7437 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7438 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7439 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7440 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7441 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7442
7443 # Settings for pkg-config files
7444
7445 cat > $TMPH <<EOF
7446 # Automatically generated by configure - do not modify!
7447 shared=$shared
7448 build_suffix=$build_suffix
7449 prefix=$prefix
7450 libdir=$libdir
7451 incdir=$incdir
7452 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7453 source_path=${source_path}
7454 LIBPREF=${LIBPREF}
7455 LIBSUF=${LIBSUF}
7456 extralibs_avutil="$avutil_extralibs"
7457 extralibs_avcodec="$avcodec_extralibs"
7458 extralibs_avformat="$avformat_extralibs"
7459 extralibs_avdevice="$avdevice_extralibs"
7460 extralibs_avfilter="$avfilter_extralibs"
7461 extralibs_avresample="$avresample_extralibs"
7462 extralibs_postproc="$postproc_extralibs"
7463 extralibs_swscale="$swscale_extralibs"
7464 extralibs_swresample="$swresample_extralibs"
7465 EOF
7466
7467 for lib in $LIBRARY_LIST; do
7468     lib_deps="$(eval echo \$${lib}_deps)"
7469     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7470 done
7471
7472 cp_if_changed $TMPH ffbuild/config.sh