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

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