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-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 229   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 230   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 231   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 232                            and libraw1394 [no]
 233   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 234   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 235   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 236   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 237   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 238   --enable-libgme          enable Game Music Emu via libgme [no]
 239   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 240   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 241   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 242   --enable-libjack         enable JACK audio sound server [no]
 243   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 244   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 245   --enable-liblensfun      enable lensfun lens correction [no]
 246   --enable-libmodplug      enable ModPlug via libmodplug [no]
 247   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 248   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 249   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 250   --enable-libopencv       enable video filtering via libopencv [no]
 251   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 252   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 253   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 254   --enable-libopus         enable Opus de/encoding via libopus [no]
 255   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 256   --enable-librsvg         enable SVG rasterization via librsvg [no]
 257   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 258   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 259   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 260   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 261   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 262   --enable-libsoxr         enable Include libsoxr resampling [no]
 263   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 264   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 265   --enable-libssh          enable SFTP protocol via libssh [no]
 266   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 267                            for DNN based filters like sr [no]
 268   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 269   --enable-libtheora       enable Theora encoding via libtheora [no]
 270   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 271                            if openssl, gnutls or mbedtls is not used [no]
 272   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 273   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 274   --enable-libvidstab      enable video stabilization using vid.stab [no]
 275   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 276   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 277   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 278                            native implementation exists [no]
 279   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 280   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 281   --enable-libwebp         enable WebP encoding via libwebp [no]
 282   --enable-libx264         enable H.264 encoding via x264 [no]
 283   --enable-libx265         enable HEVC encoding via x265 [no]
 284   --enable-libxavs         enable AVS encoding via xavs [no]
 285   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 286   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 287   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 288   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 289   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 290   --enable-libxvid         enable Xvid encoding via xvidcore,
 291                            native MPEG-4/Xvid encoder exists [no]
 292   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 293                            for dash demuxing support [no]
 294   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 295   --enable-libzmq          enable message passing via libzmq [no]
 296   --enable-libzvbi         enable teletext support via libzvbi [no]
 297   --enable-lv2             enable LV2 audio filtering [no]
 298   --disable-lzma           disable lzma [autodetect]
 299   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 300   --enable-libndi_newtek   enable Newteck NDI 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-sdk        enable CUDA features that require the CUDA SDK [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 enable(){
 652     set_all yes $*
 653 }
 654
 655 disable(){
 656     set_all no $*
 657 }
 658
 659 enable_weak(){
 660     set_weak yes $*
 661 }
 662
 663 disable_weak(){
 664     set_weak no $*
 665 }
 666
 667 enable_sanitized(){
 668     for var; do
 669         enable $(sanitize_var_name $var)
 670     done
 671 }
 672
 673 disable_sanitized(){
 674     for var; do
 675         disable $(sanitize_var_name $var)
 676     done
 677 }
 678
 679 do_enable_deep(){
 680     for var; do
 681         enabled $var && continue
 682         set -- $var
 683         eval enable_deep \$${var}_select
 684         var=$1
 685         eval enable_deep_weak \$${var}_suggest
 686     done
 687 }
 688
 689 enable_deep(){
 690     do_enable_deep $*
 691     enable $*
 692 }
 693
 694 enable_deep_weak(){
 695     for var; do
 696         disabled $var && continue
 697         set -- $var
 698         do_enable_deep $var
 699         var=$1
 700         enable_weak $var
 701     done
 702 }
 703
 704 requested(){
 705     test "${1#!}" = "$1" && op="=" || op="!="
 706     eval test "x\$${1#!}_requested" $op "xyes"
 707 }
 708
 709 enabled(){
 710     test "${1#!}" = "$1" && op="=" || op="!="
 711     eval test "x\$${1#!}" $op "xyes"
 712 }
 713
 714 disabled(){
 715     test "${1#!}" = "$1" && op="=" || op="!="
 716     eval test "x\$${1#!}" $op "xno"
 717 }
 718
 719 enabled_all(){
 720     for opt; do
 721         enabled $opt || return 1
 722     done
 723 }
 724
 725 disabled_all(){
 726     for opt; do
 727         disabled $opt || return 1
 728     done
 729 }
 730
 731 enabled_any(){
 732     for opt; do
 733         enabled $opt && return 0
 734     done
 735 }
 736
 737 disabled_any(){
 738     for opt; do
 739         disabled $opt && return 0
 740     done
 741     return 1
 742 }
 743
 744 set_default(){
 745     for opt; do
 746         eval : \${$opt:=\$${opt}_default}
 747     done
 748 }
 749
 750 is_in(){
 751     value=$1
 752     shift
 753     for var in $*; do
 754         [ $var = $value ] && return 0
 755     done
 756     return 1
 757 }
 758
 759 # The cfg loop is very hot (several thousands iterations), and in bash also
 760 # potentialy quite slow. Try to abort the iterations early, preferably without
 761 # calling functions. 70%+ of the time cfg is already done or without deps.
 762 check_deps(){
 763     for cfg; do
 764         eval [ x\$${cfg}_checking = xdone ] && continue
 765         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 766
 767         eval "
 768         dep_all=\$${cfg}_deps
 769         dep_any=\$${cfg}_deps_any
 770         dep_con=\$${cfg}_conflict
 771         dep_sel=\$${cfg}_select
 772         dep_sgs=\$${cfg}_suggest
 773         dep_ifa=\$${cfg}_if
 774         dep_ifn=\$${cfg}_if_any
 775         "
 776
 777         # most of the time here $cfg has no deps - avoid costly no-op work
 778         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 779             eval ${cfg}_checking=inprogress
 780
 781             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 782             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 783             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 784
 785             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 786             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 787             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 788             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 789             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 790             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 791
 792             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 793
 794             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 795                 # filter out library deps, these do not belong in extralibs
 796                 is_in $dep $LIBRARY_LIST && continue
 797                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 798             done
 799         fi
 800
 801         eval ${cfg}_checking=done
 802     done
 803 }
 804
 805 print_config(){
 806     pfx=$1
 807     files=$2
 808     shift 2
 809     map 'eval echo "$v \${$v:-no}"' "$@" |
 810     awk "BEGIN { split(\"$files\", files) }
 811         {
 812             c = \"$pfx\" toupper(\$1);
 813             v = \$2;
 814             sub(/yes/, 1, v);
 815             sub(/no/,  0, v);
 816             for (f in files) {
 817                 file = files[f];
 818                 if (file ~ /\\.h\$/) {
 819                     printf(\"#define %s %d\\n\", c, v) >>file;
 820                 } else if (file ~ /\\.asm\$/) {
 821                     printf(\"%%define %s %d\\n\", c, v) >>file;
 822                 } else if (file ~ /\\.mak\$/) {
 823                     n = -v ? \"\" : \"!\";
 824                     printf(\"%s%s=yes\\n\", n, c) >>file;
 825                 } else if (file ~ /\\.texi\$/) {
 826                     pre = -v ? \"\" : \"@c \";
 827                     yesno = \$2;
 828                     c2 = tolower(c);
 829                     gsub(/_/, \"-\", c2);
 830                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 831                 }
 832             }
 833         }"
 834 }
 835
 836 print_enabled(){
 837     suf=$1
 838     shift
 839     for v; do
 840         enabled $v && printf "%s\n" ${v%$suf}
 841     done
 842 }
 843
 844 append(){
 845     var=$1
 846     shift
 847     eval "$var=\"\$$var $*\""
 848 }
 849
 850 prepend(){
 851     var=$1
 852     shift
 853     eval "$var=\"$* \$$var\""
 854 }
 855
 856 reverse () {
 857     eval '
 858         reverse_out=
 859         for v in $'$1'; do
 860             reverse_out="$v $reverse_out"
 861         done
 862         '$1'=$reverse_out
 863     '
 864 }
 865
 866 # keeps the last occurence of each non-unique item
 867 unique(){
 868     unique_out=
 869     eval unique_in=\$$1
 870     reverse unique_in
 871     for v in $unique_in; do
 872         # " $unique_out" +space such that every item is surrounded with spaces
 873         case " $unique_out" in *" $v "*) continue; esac  # already in list
 874         unique_out="$unique_out$v "
 875     done
 876     reverse unique_out
 877     eval $1=\$unique_out
 878 }
 879
 880 resolve(){
 881     resolve_out=
 882     eval resolve_in=\$$1
 883     for v in $resolve_in; do
 884         eval 'resolve_out="$resolve_out$'$v' "'
 885     done
 886     eval $1=\$resolve_out
 887 }
 888
 889 add_cppflags(){
 890     append CPPFLAGS "$@"
 891 }
 892
 893 add_cflags(){
 894     append CFLAGS $($cflags_filter "$@")
 895 }
 896
 897 add_cflags_headers(){
 898     append CFLAGS_HEADERS $($cflags_filter "$@")
 899 }
 900
 901 add_cxxflags(){
 902     append CXXFLAGS $($cflags_filter "$@")
 903 }
 904
 905 add_objcflags(){
 906     append OBJCFLAGS $($objcflags_filter "$@")
 907 }
 908
 909 add_asflags(){
 910     append ASFLAGS $($asflags_filter "$@")
 911 }
 912
 913 add_ldflags(){
 914     append LDFLAGS $($ldflags_filter "$@")
 915 }
 916
 917 add_ldexeflags(){
 918     append LDEXEFLAGS $($ldflags_filter "$@")
 919 }
 920
 921 add_ldsoflags(){
 922     append LDSOFLAGS $($ldflags_filter "$@")
 923 }
 924
 925 add_extralibs(){
 926     prepend extralibs $($ldflags_filter "$@")
 927 }
 928
 929 add_stripflags(){
 930     append ASMSTRIPFLAGS "$@"
 931 }
 932
 933 add_host_cppflags(){
 934     append host_cppflags "$@"
 935 }
 936
 937 add_host_cflags(){
 938     append host_cflags $($host_cflags_filter "$@")
 939 }
 940
 941 add_host_ldflags(){
 942     append host_ldflags $($host_ldflags_filter "$@")
 943 }
 944
 945 add_compat(){
 946     append compat_objs $1
 947     shift
 948     map 'add_cppflags -D$v' "$@"
 949 }
 950
 951 test_cmd(){
 952     log "$@"
 953     "$@" >> $logfile 2>&1
 954 }
 955
 956 test_stat(){
 957     log test_stat "$@"
 958     stat "$1" >> $logfile 2>&1
 959 }
 960
 961 cc_e(){
 962     eval printf '%s\\n' $CC_E
 963 }
 964
 965 cc_o(){
 966     eval printf '%s\\n' $CC_O
 967 }
 968
 969 as_o(){
 970     eval printf '%s\\n' $AS_O
 971 }
 972
 973 x86asm_o(){
 974     eval printf '%s\\n' $X86ASM_O
 975 }
 976
 977 ld_o(){
 978     eval printf '%s\\n' $LD_O
 979 }
 980
 981 hostcc_e(){
 982     eval printf '%s\\n' $HOSTCC_E
 983 }
 984
 985 hostcc_o(){
 986     eval printf '%s\\n' $HOSTCC_O
 987 }
 988
 989 test_cc(){
 990     log test_cc "$@"
 991     cat > $TMPC
 992     log_file $TMPC
 993     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 994 }
 995
 996 test_cxx(){
 997     log test_cxx "$@"
 998     cat > $TMPCPP
 999     log_file $TMPCPP
1000     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1001 }
1002
1003 test_objcc(){
1004     log test_objcc "$@"
1005     cat > $TMPM
1006     log_file $TMPM
1007     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1008 }
1009
1010 test_cpp(){
1011     log test_cpp "$@"
1012     cat > $TMPC
1013     log_file $TMPC
1014     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1015 }
1016
1017 test_as(){
1018     log test_as "$@"
1019     cat > $TMPS
1020     log_file $TMPS
1021     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1022 }
1023
1024 test_x86asm(){
1025     log test_x86asm "$@"
1026     echo "$1" > $TMPASM
1027     log_file $TMPASM
1028     shift
1029     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1030 }
1031
1032 check_cmd(){
1033     log check_cmd "$@"
1034     cmd=$1
1035     disabled $cmd && return
1036     disable $cmd
1037     test_cmd $@ && enable $cmd
1038 }
1039
1040 check_as(){
1041     log check_as "$@"
1042     name=$1
1043     code=$2
1044     shift 2
1045     disable $name
1046     test_as $@ <<EOF && enable $name
1047 $code
1048 EOF
1049 }
1050
1051 check_inline_asm(){
1052     log check_inline_asm "$@"
1053     name="$1"
1054     code="$2"
1055     shift 2
1056     disable $name
1057     test_cc "$@" <<EOF && enable $name
1058 void foo(void){ __asm__ volatile($code); }
1059 EOF
1060 }
1061
1062 check_inline_asm_flags(){
1063     log check_inline_asm_flags "$@"
1064     name="$1"
1065     code="$2"
1066     flags=''
1067     shift 2
1068     while [ "$1" != "" ]; do
1069       append flags $1
1070       shift
1071     done;
1072     disable $name
1073     cat > $TMPC <<EOF
1074 void foo(void){ __asm__ volatile($code); }
1075 EOF
1076     log_file $TMPC
1077     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1078     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1079 }
1080
1081 check_insn(){
1082     log check_insn "$@"
1083     check_inline_asm ${1}_inline "\"$2\""
1084     check_as ${1}_external "$2"
1085 }
1086
1087 check_x86asm(){
1088     log check_x86asm "$@"
1089     name=$1
1090     shift
1091     disable $name
1092     test_x86asm "$@" && enable $name
1093 }
1094
1095 test_ld(){
1096     log test_ld "$@"
1097     type=$1
1098     shift 1
1099     flags=$(filter_out '-l*|*.so' $@)
1100     libs=$(filter '-l*|*.so' $@)
1101     test_$type $($cflags_filter $flags) || return
1102     flags=$($ldflags_filter $flags)
1103     libs=$($ldflags_filter $libs)
1104     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1105 }
1106
1107 check_ld(){
1108     log check_ld "$@"
1109     type=$1
1110     name=$2
1111     shift 2
1112     disable $name
1113     test_ld $type $@ && enable $name
1114 }
1115
1116 print_include(){
1117     hdr=$1
1118     test "${hdr%.h}" = "${hdr}" &&
1119         echo "#include $hdr"    ||
1120         echo "#include <$hdr>"
1121 }
1122
1123 test_code(){
1124     log test_code "$@"
1125     check=$1
1126     headers=$2
1127     code=$3
1128     shift 3
1129     {
1130         for hdr in $headers; do
1131             print_include $hdr
1132         done
1133         echo "int main(void) { $code; return 0; }"
1134     } | test_$check "$@"
1135 }
1136
1137 check_cppflags(){
1138     log check_cppflags "$@"
1139     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1140 #include <stdlib.h>
1141 EOF
1142 }
1143
1144 test_cflags(){
1145     log test_cflags "$@"
1146     set -- $($cflags_filter "$@")
1147     test_cc "$@" <<EOF
1148 int x;
1149 EOF
1150 }
1151
1152 check_cflags(){
1153     log check_cflags "$@"
1154     test_cflags "$@" && add_cflags "$@"
1155 }
1156
1157 check_cxxflags(){
1158     log check_cxxflags "$@"
1159     set -- $($cflags_filter "$@")
1160     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1161 int x;
1162 EOF
1163 }
1164
1165 test_objcflags(){
1166     log test_objcflags "$@"
1167     set -- $($objcflags_filter "$@")
1168     test_objcc "$@" <<EOF
1169 int x;
1170 EOF
1171 }
1172
1173 check_objcflags(){
1174     log check_objcflags "$@"
1175     test_objcflags "$@" && add_objcflags "$@"
1176 }
1177
1178 test_ldflags(){
1179     log test_ldflags "$@"
1180     set -- $($ldflags_filter "$@")
1181     test_ld "cc" "$@" <<EOF
1182 int main(void){ return 0; }
1183 EOF
1184 }
1185
1186 check_ldflags(){
1187     log check_ldflags "$@"
1188     test_ldflags "$@" && add_ldflags "$@"
1189 }
1190
1191 test_stripflags(){
1192     log test_stripflags "$@"
1193     # call test_cc to get a fresh TMPO
1194     test_cc <<EOF
1195 int main(void) { return 0; }
1196 EOF
1197     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1198 }
1199
1200 check_stripflags(){
1201     log check_stripflags "$@"
1202     test_stripflags "$@" && add_stripflags "$@"
1203 }
1204
1205 check_headers(){
1206     log check_headers "$@"
1207     headers=$1
1208     shift
1209     disable_sanitized $headers
1210     {
1211         for hdr in $headers; do
1212             print_include $hdr
1213         done
1214         echo "int x;"
1215     } | test_cpp "$@" && enable_sanitized $headers
1216 }
1217
1218 check_header_objcc(){
1219     log check_header_objcc "$@"
1220     rm -f -- "$TMPO"
1221     header=$1
1222     shift
1223     disable_sanitized $header
1224     {
1225        echo "#include <$header>"
1226        echo "int main(void) { return 0; }"
1227     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1228 }
1229
1230 check_apple_framework(){
1231     log check_apple_framework "$@"
1232     framework="$1"
1233     name="$(tolower $framework)"
1234     header="${framework}/${framework}.h"
1235     disable $name
1236     check_header_objcc $header &&
1237         enable $name && eval ${name}_extralibs='"-framework $framework"'
1238 }
1239
1240 check_func(){
1241     log check_func "$@"
1242     func=$1
1243     shift
1244     disable $func
1245     test_ld "cc" "$@" <<EOF && enable $func
1246 extern int $func();
1247 int main(void){ $func(); }
1248 EOF
1249 }
1250
1251 check_complexfunc(){
1252     log check_complexfunc "$@"
1253     func=$1
1254     narg=$2
1255     shift 2
1256     test $narg = 2 && args="f, g" || args="f * I"
1257     disable $func
1258     test_ld "cc" "$@" <<EOF && enable $func
1259 #include <complex.h>
1260 #include <math.h>
1261 float foo(complex float f, complex float g) { return $func($args); }
1262 int main(void){ return (int) foo; }
1263 EOF
1264 }
1265
1266 check_mathfunc(){
1267     log check_mathfunc "$@"
1268     func=$1
1269     narg=$2
1270     shift 2
1271     test $narg = 2 && args="f, g" || args="f"
1272     disable $func
1273     test_ld "cc" "$@" <<EOF && enable $func
1274 #include <math.h>
1275 float foo(float f, float g) { return $func($args); }
1276 int main(void){ return (int) foo; }
1277 EOF
1278 }
1279
1280 check_func_headers(){
1281     log check_func_headers "$@"
1282     headers=$1
1283     funcs=$2
1284     shift 2
1285     {
1286         for hdr in $headers; do
1287             print_include $hdr
1288         done
1289         echo "#include <stdint.h>"
1290         for func in $funcs; do
1291             echo "long check_$func(void) { return (long) $func; }"
1292         done
1293         echo "int main(void) { int ret = 0;"
1294         # LTO could optimize out the test functions without this
1295         for func in $funcs; do
1296             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1297         done
1298         echo "return ret; }"
1299     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1300 }
1301
1302 check_class_headers_cpp(){
1303     log check_class_headers_cpp "$@"
1304     headers=$1
1305     classes=$2
1306     shift 2
1307     {
1308         for hdr in $headers; do
1309             echo "#include <$hdr>"
1310         done
1311         echo "int main(void) { "
1312         i=1
1313         for class in $classes; do
1314             echo "$class obj$i;"
1315             i=$(expr $i + 1)
1316         done
1317         echo "return 0; }"
1318     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1319 }
1320
1321 test_cpp_condition(){
1322     log test_cpp_condition "$@"
1323     header=$1
1324     condition=$2
1325     shift 2
1326     test_cpp "$@" <<EOF
1327 #include <$header>
1328 #if !($condition)
1329 #error "unsatisfied condition: $condition"
1330 #endif
1331 EOF
1332 }
1333
1334 check_cpp_condition(){
1335     log check_cpp_condition "$@"
1336     name=$1
1337     shift 1
1338     disable $name
1339     test_cpp_condition "$@" && enable $name
1340 }
1341
1342 test_cflags_cc(){
1343     log test_cflags_cc "$@"
1344     flags=$1
1345     header=$2
1346     condition=$3
1347     shift 3
1348     set -- $($cflags_filter "$flags")
1349     test_cc "$@" <<EOF
1350 #include <$header>
1351 #if !($condition)
1352 #error "unsatisfied condition: $condition"
1353 #endif
1354 EOF
1355 }
1356
1357 check_lib(){
1358     log check_lib "$@"
1359     name="$1"
1360     headers="$2"
1361     funcs="$3"
1362     shift 3
1363     disable $name
1364     check_func_headers "$headers" "$funcs" "$@" &&
1365         enable $name && eval ${name}_extralibs="\$@"
1366 }
1367
1368 check_lib_cpp(){
1369     log check_lib_cpp "$@"
1370     name="$1"
1371     headers="$2"
1372     classes="$3"
1373     shift 3
1374     disable $name
1375     check_class_headers_cpp "$headers" "$classes" "$@" &&
1376         enable $name && eval ${name}_extralibs="\$@"
1377 }
1378
1379 test_pkg_config(){
1380     log test_pkg_config "$@"
1381     name="$1"
1382     pkg_version="$2"
1383     pkg="${2%% *}"
1384     headers="$3"
1385     funcs="$4"
1386     shift 4
1387     disable $name
1388     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1389     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1390     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1391     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1392         enable $name &&
1393         set_sanitized "${name}_cflags"    $pkg_cflags &&
1394         set_sanitized "${name}_extralibs" $pkg_libs
1395 }
1396
1397 check_pkg_config(){
1398     log check_pkg_config "$@"
1399     name="$1"
1400     test_pkg_config "$@" &&
1401         eval add_cflags \$${name}_cflags
1402 }
1403
1404 test_exec(){
1405     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1406 }
1407
1408 check_exec_crash(){
1409     log check_exec_crash "$@"
1410     code=$(cat)
1411
1412     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1413     # are safe but may not be available everywhere.  Thus we use
1414     # raise(SIGTERM) instead.  The check is run in a subshell so we
1415     # can redirect the "Terminated" message from the shell.  SIGBUS
1416     # is not defined by standard C so it is used conditionally.
1417
1418     (test_exec "$@") >> $logfile 2>&1 <<EOF
1419 #include <signal.h>
1420 static void sighandler(int sig){
1421     raise(SIGTERM);
1422 }
1423 int foo(void){
1424     $code
1425 }
1426 int (*func_ptr)(void) = foo;
1427 int main(void){
1428     signal(SIGILL, sighandler);
1429     signal(SIGFPE, sighandler);
1430     signal(SIGSEGV, sighandler);
1431 #ifdef SIGBUS
1432     signal(SIGBUS, sighandler);
1433 #endif
1434     return func_ptr();
1435 }
1436 EOF
1437 }
1438
1439 check_type(){
1440     log check_type "$@"
1441     headers=$1
1442     type=$2
1443     shift 2
1444     disable_sanitized "$type"
1445     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1446 }
1447
1448 check_struct(){
1449     log check_struct "$@"
1450     headers=$1
1451     struct=$2
1452     member=$3
1453     shift 3
1454     disable_sanitized "${struct}_${member}"
1455     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1456         enable_sanitized "${struct}_${member}"
1457 }
1458
1459 check_builtin(){
1460     log check_builtin "$@"
1461     name=$1
1462     headers=$2
1463     builtin=$3
1464     shift 3
1465     disable "$name"
1466     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1467 }
1468
1469 check_compile_assert(){
1470     log check_compile_assert "$@"
1471     name=$1
1472     headers=$2
1473     condition=$3
1474     shift 3
1475     disable "$name"
1476     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1477 }
1478
1479 check_cc(){
1480     log check_cc "$@"
1481     name=$1
1482     shift
1483     disable "$name"
1484     test_code cc "$@" && enable "$name"
1485 }
1486
1487 require(){
1488     log require "$@"
1489     name_version="$1"
1490     name="${1%% *}"
1491     shift
1492     check_lib $name "$@" || die "ERROR: $name_version not found"
1493 }
1494
1495 require_cc(){
1496     log require_cc "$@"
1497     name="$1"
1498     check_cc "$@" || die "ERROR: $name failed"
1499 }
1500
1501 require_cpp(){
1502     name="$1"
1503     headers="$2"
1504     classes="$3"
1505     shift 3
1506     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1507 }
1508
1509 require_headers(){
1510     log require_headers "$@"
1511     headers="$1"
1512     check_headers "$@" || die "ERROR: $headers not found"
1513 }
1514
1515 require_cpp_condition(){
1516     log require_cpp_condition "$@"
1517     condition="$3"
1518     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1519 }
1520
1521 require_pkg_config(){
1522     log require_pkg_config "$@"
1523     pkg_version="$2"
1524     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1525 }
1526
1527 test_host_cc(){
1528     log test_host_cc "$@"
1529     cat > $TMPC
1530     log_file $TMPC
1531     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1532 }
1533
1534 test_host_cpp(){
1535     log test_host_cpp "$@"
1536     cat > $TMPC
1537     log_file $TMPC
1538     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1539 }
1540
1541 check_host_cppflags(){
1542     log check_host_cppflags "$@"
1543     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1544 #include <stdlib.h>
1545 EOF
1546 }
1547
1548 check_host_cflags(){
1549     log check_host_cflags "$@"
1550     set -- $($host_cflags_filter "$@")
1551     test_host_cc "$@" <<EOF && append host_cflags "$@"
1552 int x;
1553 EOF
1554 }
1555
1556 test_host_cpp_condition(){
1557     log test_host_cpp_condition "$@"
1558     header=$1
1559     condition=$2
1560     shift 2
1561     test_host_cpp "$@" <<EOF
1562 #include <$header>
1563 #if !($condition)
1564 #error "unsatisfied condition: $condition"
1565 #endif
1566 EOF
1567 }
1568
1569 check_host_cpp_condition(){
1570     log check_host_cpp_condition "$@"
1571     name=$1
1572     shift 1
1573     disable $name
1574     test_host_cpp_condition "$@" && enable $name
1575 }
1576
1577 cp_if_changed(){
1578     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1579     mkdir -p "$(dirname $2)"
1580     cp -f "$1" "$2"
1581 }
1582
1583 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1584 # system-dependent things.
1585
1586 AVCODEC_COMPONENTS="
1587     bsfs
1588     decoders
1589     encoders
1590     hwaccels
1591     parsers
1592 "
1593
1594 AVDEVICE_COMPONENTS="
1595     indevs
1596     outdevs
1597 "
1598
1599 AVFILTER_COMPONENTS="
1600     filters
1601 "
1602
1603 AVFORMAT_COMPONENTS="
1604     demuxers
1605     muxers
1606     protocols
1607 "
1608
1609 COMPONENT_LIST="
1610     $AVCODEC_COMPONENTS
1611     $AVDEVICE_COMPONENTS
1612     $AVFILTER_COMPONENTS
1613     $AVFORMAT_COMPONENTS
1614 "
1615
1616 EXAMPLE_LIST="
1617     avio_dir_cmd_example
1618     avio_reading_example
1619     decode_audio_example
1620     decode_video_example
1621     demuxing_decoding_example
1622     encode_audio_example
1623     encode_video_example
1624     extract_mvs_example
1625     filter_audio_example
1626     filtering_audio_example
1627     filtering_video_example
1628     http_multiclient_example
1629     hw_decode_example
1630     metadata_example
1631     muxing_example
1632     qsvdec_example
1633     remuxing_example
1634     resampling_audio_example
1635     scaling_video_example
1636     transcode_aac_example
1637     transcoding_example
1638     vaapi_encode_example
1639     vaapi_transcode_example
1640 "
1641
1642 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1643     alsa
1644     appkit
1645     avfoundation
1646     bzlib
1647     coreimage
1648     iconv
1649     libxcb
1650     libxcb_shm
1651     libxcb_shape
1652     libxcb_xfixes
1653     lzma
1654     schannel
1655     sdl2
1656     securetransport
1657     sndio
1658     xlib
1659     zlib
1660 "
1661
1662 EXTERNAL_LIBRARY_GPL_LIST="
1663     avisynth
1664     frei0r
1665     libcdio
1666     libdavs2
1667     librubberband
1668     libvidstab
1669     libx264
1670     libx265
1671     libxavs
1672     libxavs2
1673     libxvid
1674 "
1675
1676 EXTERNAL_LIBRARY_NONFREE_LIST="
1677     decklink
1678     libndi_newtek
1679     libfdk_aac
1680     openssl
1681     libtls
1682 "
1683
1684 EXTERNAL_LIBRARY_VERSION3_LIST="
1685     gmp
1686     liblensfun
1687     libopencore_amrnb
1688     libopencore_amrwb
1689     libvmaf
1690     libvo_amrwbenc
1691     mbedtls
1692     rkmpp
1693 "
1694
1695 EXTERNAL_LIBRARY_GPLV3_LIST="
1696     libsmbclient
1697 "
1698
1699 EXTERNAL_LIBRARY_LIST="
1700     $EXTERNAL_LIBRARY_GPL_LIST
1701     $EXTERNAL_LIBRARY_NONFREE_LIST
1702     $EXTERNAL_LIBRARY_VERSION3_LIST
1703     $EXTERNAL_LIBRARY_GPLV3_LIST
1704     chromaprint
1705     gcrypt
1706     gnutls
1707     jni
1708     ladspa
1709     libaom
1710     libass
1711     libbluray
1712     libbs2b
1713     libcaca
1714     libcelt
1715     libcodec2
1716     libdav1d
1717     libdc1394
1718     libdrm
1719     libflite
1720     libfontconfig
1721     libfreetype
1722     libfribidi
1723     libgme
1724     libgsm
1725     libiec61883
1726     libilbc
1727     libjack
1728     libklvanc
1729     libkvazaar
1730     libmodplug
1731     libmp3lame
1732     libmysofa
1733     libopencv
1734     libopenh264
1735     libopenjpeg
1736     libopenmpt
1737     libopus
1738     libpulse
1739     librsvg
1740     librtmp
1741     libshine
1742     libsmbclient
1743     libsnappy
1744     libsoxr
1745     libspeex
1746     libsrt
1747     libssh
1748     libtensorflow
1749     libtesseract
1750     libtheora
1751     libtwolame
1752     libv4l2
1753     libvorbis
1754     libvpx
1755     libwavpack
1756     libwebp
1757     libxml2
1758     libzimg
1759     libzmq
1760     libzvbi
1761     lv2
1762     mediacodec
1763     openal
1764     opengl
1765     vapoursynth
1766 "
1767
1768 HWACCEL_AUTODETECT_LIBRARY_LIST="
1769     amf
1770     audiotoolbox
1771     crystalhd
1772     cuda
1773     cuvid
1774     d3d11va
1775     dxva2
1776     ffnvcodec
1777     nvdec
1778     nvenc
1779     vaapi
1780     vdpau
1781     videotoolbox
1782     v4l2_m2m
1783     xvmc
1784 "
1785
1786 # catchall list of things that require external libs to link
1787 EXTRALIBS_LIST="
1788     cpu_init
1789     cws2fws
1790 "
1791
1792 HWACCEL_LIBRARY_NONFREE_LIST="
1793     cuda_sdk
1794     libnpp
1795 "
1796
1797 HWACCEL_LIBRARY_LIST="
1798     $HWACCEL_LIBRARY_NONFREE_LIST
1799     libmfx
1800     mmal
1801     omx
1802     opencl
1803 "
1804
1805 DOCUMENT_LIST="
1806     doc
1807     htmlpages
1808     manpages
1809     podpages
1810     txtpages
1811 "
1812
1813 FEATURE_LIST="
1814     ftrapv
1815     gray
1816     hardcoded_tables
1817     omx_rpi
1818     runtime_cpudetect
1819     safe_bitstream_reader
1820     shared
1821     small
1822     static
1823     swscale_alpha
1824 "
1825
1826 # this list should be kept in linking order
1827 LIBRARY_LIST="
1828     avdevice
1829     avfilter
1830     swscale
1831     postproc
1832     avformat
1833     avcodec
1834     swresample
1835     avresample
1836     avutil
1837 "
1838
1839 LICENSE_LIST="
1840     gpl
1841     nonfree
1842     version3
1843 "
1844
1845 PROGRAM_LIST="
1846     ffplay
1847     ffprobe
1848     ffmpeg
1849 "
1850
1851 SUBSYSTEM_LIST="
1852     dct
1853     dwt
1854     error_resilience
1855     faan
1856     fast_unaligned
1857     fft
1858     lsp
1859     lzo
1860     mdct
1861     pixelutils
1862     network
1863     rdft
1864 "
1865
1866 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1867 CONFIG_LIST="
1868     $DOCUMENT_LIST
1869     $EXAMPLE_LIST
1870     $EXTERNAL_LIBRARY_LIST
1871     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1872     $HWACCEL_LIBRARY_LIST
1873     $HWACCEL_AUTODETECT_LIBRARY_LIST
1874     $FEATURE_LIST
1875     $LICENSE_LIST
1876     $LIBRARY_LIST
1877     $PROGRAM_LIST
1878     $SUBSYSTEM_LIST
1879     autodetect
1880     fontconfig
1881     linux_perf
1882     memory_poisoning
1883     neon_clobber_test
1884     ossfuzz
1885     pic
1886     thumb
1887     valgrind_backtrace
1888     xmm_clobber_test
1889     $COMPONENT_LIST
1890 "
1891
1892 THREADS_LIST="
1893     pthreads
1894     os2threads
1895     w32threads
1896 "
1897
1898 ATOMICS_LIST="
1899     atomics_gcc
1900     atomics_suncc
1901     atomics_win32
1902 "
1903
1904 AUTODETECT_LIBS="
1905     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1906     $HWACCEL_AUTODETECT_LIBRARY_LIST
1907     $THREADS_LIST
1908 "
1909
1910 ARCH_LIST="
1911     aarch64
1912     alpha
1913     arm
1914     avr32
1915     avr32_ap
1916     avr32_uc
1917     bfin
1918     ia64
1919     m68k
1920     mips
1921     mips64
1922     parisc
1923     ppc
1924     ppc64
1925     s390
1926     sh4
1927     sparc
1928     sparc64
1929     tilegx
1930     tilepro
1931     tomi
1932     x86
1933     x86_32
1934     x86_64
1935 "
1936
1937 ARCH_EXT_LIST_ARM="
1938     armv5te
1939     armv6
1940     armv6t2
1941     armv8
1942     neon
1943     vfp
1944     vfpv3
1945     setend
1946 "
1947
1948 ARCH_EXT_LIST_MIPS="
1949     mipsfpu
1950     mips32r2
1951     mips32r5
1952     mips64r2
1953     mips32r6
1954     mips64r6
1955     mipsdsp
1956     mipsdspr2
1957     msa
1958 "
1959
1960 ARCH_EXT_LIST_LOONGSON="
1961     loongson2
1962     loongson3
1963     mmi
1964 "
1965
1966 ARCH_EXT_LIST_X86_SIMD="
1967     aesni
1968     amd3dnow
1969     amd3dnowext
1970     avx
1971     avx2
1972     avx512
1973     fma3
1974     fma4
1975     mmx
1976     mmxext
1977     sse
1978     sse2
1979     sse3
1980     sse4
1981     sse42
1982     ssse3
1983     xop
1984 "
1985
1986 ARCH_EXT_LIST_PPC="
1987     altivec
1988     dcbzl
1989     ldbrx
1990     power8
1991     ppc4xx
1992     vsx
1993 "
1994
1995 ARCH_EXT_LIST_X86="
1996     $ARCH_EXT_LIST_X86_SIMD
1997     cpunop
1998     i686
1999 "
2000
2001 ARCH_EXT_LIST="
2002     $ARCH_EXT_LIST_ARM
2003     $ARCH_EXT_LIST_PPC
2004     $ARCH_EXT_LIST_X86
2005     $ARCH_EXT_LIST_MIPS
2006     $ARCH_EXT_LIST_LOONGSON
2007 "
2008
2009 ARCH_FEATURES="
2010     aligned_stack
2011     fast_64bit
2012     fast_clz
2013     fast_cmov
2014     local_aligned
2015     simd_align_16
2016     simd_align_32
2017     simd_align_64
2018 "
2019
2020 BUILTIN_LIST="
2021     atomic_cas_ptr
2022     machine_rw_barrier
2023     MemoryBarrier
2024     mm_empty
2025     rdtsc
2026     sem_timedwait
2027     sync_val_compare_and_swap
2028 "
2029 HAVE_LIST_CMDLINE="
2030     inline_asm
2031     symver
2032     x86asm
2033 "
2034
2035 HAVE_LIST_PUB="
2036     bigendian
2037     fast_unaligned
2038 "
2039
2040 HEADERS_LIST="
2041     arpa_inet_h
2042     asm_types_h
2043     cdio_paranoia_h
2044     cdio_paranoia_paranoia_h
2045     cuda_h
2046     dispatch_dispatch_h
2047     dev_bktr_ioctl_bt848_h
2048     dev_bktr_ioctl_meteor_h
2049     dev_ic_bt8xx_h
2050     dev_video_bktr_ioctl_bt848_h
2051     dev_video_meteor_ioctl_meteor_h
2052     direct_h
2053     dirent_h
2054     dxgidebug_h
2055     dxva_h
2056     ES2_gl_h
2057     gsm_h
2058     io_h
2059     linux_perf_event_h
2060     machine_ioctl_bt848_h
2061     machine_ioctl_meteor_h
2062     malloc_h
2063     opencv2_core_core_c_h
2064     OpenGL_gl3_h
2065     poll_h
2066     sys_param_h
2067     sys_resource_h
2068     sys_select_h
2069     sys_soundcard_h
2070     sys_time_h
2071     sys_un_h
2072     sys_videoio_h
2073     termios_h
2074     udplite_h
2075     unistd_h
2076     valgrind_valgrind_h
2077     windows_h
2078     winsock2_h
2079 "
2080
2081 INTRINSICS_LIST="
2082     intrinsics_neon
2083 "
2084
2085 COMPLEX_FUNCS="
2086     cabs
2087     cexp
2088 "
2089
2090 MATH_FUNCS="
2091     atanf
2092     atan2f
2093     cbrt
2094     cbrtf
2095     copysign
2096     cosf
2097     erf
2098     exp2
2099     exp2f
2100     expf
2101     hypot
2102     isfinite
2103     isinf
2104     isnan
2105     ldexpf
2106     llrint
2107     llrintf
2108     log2
2109     log2f
2110     log10f
2111     lrint
2112     lrintf
2113     powf
2114     rint
2115     round
2116     roundf
2117     sinf
2118     trunc
2119     truncf
2120 "
2121
2122 SYSTEM_FEATURES="
2123     dos_paths
2124     libc_msvcrt
2125     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2126     section_data_rel_ro
2127     threads
2128     uwp
2129     winrt
2130 "
2131
2132 SYSTEM_FUNCS="
2133     access
2134     aligned_malloc
2135     arc4random
2136     clock_gettime
2137     closesocket
2138     CommandLineToArgvW
2139     fcntl
2140     getaddrinfo
2141     gethrtime
2142     getopt
2143     GetProcessAffinityMask
2144     GetProcessMemoryInfo
2145     GetProcessTimes
2146     getrusage
2147     GetSystemTimeAsFileTime
2148     gettimeofday
2149     glob
2150     glXGetProcAddress
2151     gmtime_r
2152     inet_aton
2153     isatty
2154     kbhit
2155     localtime_r
2156     lstat
2157     lzo1x_999_compress
2158     mach_absolute_time
2159     MapViewOfFile
2160     memalign
2161     mkstemp
2162     mmap
2163     mprotect
2164     nanosleep
2165     PeekNamedPipe
2166     posix_memalign
2167     pthread_cancel
2168     sched_getaffinity
2169     SecItemImport
2170     SetConsoleTextAttribute
2171     SetConsoleCtrlHandler
2172     setmode
2173     setrlimit
2174     Sleep
2175     strerror_r
2176     sysconf
2177     sysctl
2178     usleep
2179     UTGetOSTypeFromString
2180     VirtualAlloc
2181     wglGetProcAddress
2182 "
2183
2184 SYSTEM_LIBRARIES="
2185     bcrypt
2186     vaapi_drm
2187     vaapi_x11
2188     vdpau_x11
2189 "
2190
2191 TOOLCHAIN_FEATURES="
2192     as_arch_directive
2193     as_dn_directive
2194     as_fpu_directive
2195     as_func
2196     as_object_arch
2197     asm_mod_q
2198     blocks_extension
2199     ebp_available
2200     ebx_available
2201     gnu_as
2202     gnu_windres
2203     ibm_asm
2204     inline_asm_direct_symbol_refs
2205     inline_asm_labels
2206     inline_asm_nonlocal_labels
2207     pragma_deprecated
2208     rsync_contimeout
2209     symver_asm_label
2210     symver_gnu_asm
2211     vfp_args
2212     xform_asm
2213     xmm_clobbers
2214 "
2215
2216 TYPES_LIST="
2217     kCMVideoCodecType_HEVC
2218     socklen_t
2219     struct_addrinfo
2220     struct_group_source_req
2221     struct_ip_mreq_source
2222     struct_ipv6_mreq
2223     struct_msghdr_msg_flags
2224     struct_pollfd
2225     struct_rusage_ru_maxrss
2226     struct_sctp_event_subscribe
2227     struct_sockaddr_in6
2228     struct_sockaddr_sa_len
2229     struct_sockaddr_storage
2230     struct_stat_st_mtim_tv_nsec
2231     struct_v4l2_frmivalenum_discrete
2232 "
2233
2234 HAVE_LIST="
2235     $ARCH_EXT_LIST
2236     $(add_suffix _external $ARCH_EXT_LIST)
2237     $(add_suffix _inline   $ARCH_EXT_LIST)
2238     $ARCH_FEATURES
2239     $BUILTIN_LIST
2240     $COMPLEX_FUNCS
2241     $HAVE_LIST_CMDLINE
2242     $HAVE_LIST_PUB
2243     $HEADERS_LIST
2244     $INTRINSICS_LIST
2245     $MATH_FUNCS
2246     $SYSTEM_FEATURES
2247     $SYSTEM_FUNCS
2248     $SYSTEM_LIBRARIES
2249     $THREADS_LIST
2250     $TOOLCHAIN_FEATURES
2251     $TYPES_LIST
2252     makeinfo
2253     makeinfo_html
2254     opencl_d3d11
2255     opencl_drm_arm
2256     opencl_drm_beignet
2257     opencl_dxva2
2258     opencl_vaapi_beignet
2259     opencl_vaapi_intel_media
2260     perl
2261     pod2man
2262     texi2html
2263 "
2264
2265 # options emitted with CONFIG_ prefix but not available on the command line
2266 CONFIG_EXTRA="
2267     aandcttables
2268     ac3dsp
2269     adts_header
2270     audio_frame_queue
2271     audiodsp
2272     blockdsp
2273     bswapdsp
2274     cabac
2275     cbs
2276     cbs_av1
2277     cbs_h264
2278     cbs_h265
2279     cbs_jpeg
2280     cbs_mpeg2
2281     cbs_vp9
2282     dirac_parse
2283     dnn
2284     dvprofile
2285     exif
2286     faandct
2287     faanidct
2288     fdctdsp
2289     flacdsp
2290     fmtconvert
2291     frame_thread_encoder
2292     g722dsp
2293     golomb
2294     gplv3
2295     h263dsp
2296     h264chroma
2297     h264dsp
2298     h264parse
2299     h264pred
2300     h264qpel
2301     hevcparse
2302     hpeldsp
2303     huffman
2304     huffyuvdsp
2305     huffyuvencdsp
2306     idctdsp
2307     iirfilter
2308     mdct15
2309     intrax8
2310     iso_media
2311     ividsp
2312     jpegtables
2313     lgplv3
2314     libx262
2315     llauddsp
2316     llviddsp
2317     llvidencdsp
2318     lpc
2319     lzf
2320     me_cmp
2321     mpeg_er
2322     mpegaudio
2323     mpegaudiodsp
2324     mpegaudioheader
2325     mpegvideo
2326     mpegvideoenc
2327     mss34dsp
2328     pixblockdsp
2329     qpeldsp
2330     qsv
2331     qsvdec
2332     qsvenc
2333     qsvvpp
2334     rangecoder
2335     riffdec
2336     riffenc
2337     rtpdec
2338     rtpenc_chain
2339     rv34dsp
2340     scene_sad
2341     sinewin
2342     snappy
2343     srtp
2344     startcode
2345     texturedsp
2346     texturedspenc
2347     tpeldsp
2348     vaapi_1
2349     vaapi_encode
2350     vc1dsp
2351     videodsp
2352     vp3dsp
2353     vp56dsp
2354     vp8dsp
2355     wma_freqs
2356     wmv2dsp
2357 "
2358
2359 CMDLINE_SELECT="
2360     $ARCH_EXT_LIST
2361     $CONFIG_LIST
2362     $HAVE_LIST_CMDLINE
2363     $THREADS_LIST
2364     asm
2365     cross_compile
2366     debug
2367     extra_warnings
2368     logging
2369     lto
2370     optimizations
2371     rpath
2372     stripping
2373 "
2374
2375 PATHS_LIST="
2376     bindir
2377     datadir
2378     docdir
2379     incdir
2380     libdir
2381     mandir
2382     pkgconfigdir
2383     prefix
2384     shlibdir
2385     install_name_dir
2386 "
2387
2388 CMDLINE_SET="
2389     $PATHS_LIST
2390     ar
2391     arch
2392     as
2393     assert_level
2394     build_suffix
2395     cc
2396     objcc
2397     cpu
2398     cross_prefix
2399     custom_allocator
2400     cxx
2401     dep_cc
2402     doxygen
2403     env
2404     extra_version
2405     gas
2406     host_cc
2407     host_cflags
2408     host_extralibs
2409     host_ld
2410     host_ldflags
2411     host_os
2412     ignore_tests
2413     install
2414     ld
2415     ln_s
2416     logfile
2417     malloc_prefix
2418     nm
2419     optflags
2420     nvcc
2421     nvccflags
2422     pkg_config
2423     pkg_config_flags
2424     progs_suffix
2425     random_seed
2426     ranlib
2427     samples
2428     strip
2429     sws_max_filter_size
2430     sysinclude
2431     sysroot
2432     target_exec
2433     target_os
2434     target_path
2435     target_samples
2436     tempprefix
2437     toolchain
2438     valgrind
2439     windres
2440     x86asmexe
2441 "
2442
2443 CMDLINE_APPEND="
2444     extra_cflags
2445     extra_cxxflags
2446     extra_objcflags
2447     host_cppflags
2448 "
2449
2450 # code dependency declarations
2451
2452 # architecture extensions
2453
2454 armv5te_deps="arm"
2455 armv6_deps="arm"
2456 armv6t2_deps="arm"
2457 armv8_deps="aarch64"
2458 neon_deps_any="aarch64 arm"
2459 intrinsics_neon_deps="neon"
2460 vfp_deps_any="aarch64 arm"
2461 vfpv3_deps="vfp"
2462 setend_deps="arm"
2463
2464 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2465
2466 altivec_deps="ppc"
2467 dcbzl_deps="ppc"
2468 ldbrx_deps="ppc"
2469 ppc4xx_deps="ppc"
2470 vsx_deps="altivec"
2471 power8_deps="vsx"
2472
2473 loongson2_deps="mips"
2474 loongson3_deps="mips"
2475 mips32r2_deps="mips"
2476 mips32r5_deps="mips"
2477 mips32r6_deps="mips"
2478 mips64r2_deps="mips"
2479 mips64r6_deps="mips"
2480 mipsfpu_deps="mips"
2481 mipsdsp_deps="mips"
2482 mipsdspr2_deps="mips"
2483 mmi_deps="mips"
2484 msa_deps="mipsfpu"
2485
2486 cpunop_deps="i686"
2487 x86_64_select="i686"
2488 x86_64_suggest="fast_cmov"
2489
2490 amd3dnow_deps="mmx"
2491 amd3dnowext_deps="amd3dnow"
2492 i686_deps="x86"
2493 mmx_deps="x86"
2494 mmxext_deps="mmx"
2495 sse_deps="mmxext"
2496 sse2_deps="sse"
2497 sse3_deps="sse2"
2498 ssse3_deps="sse3"
2499 sse4_deps="ssse3"
2500 sse42_deps="sse4"
2501 aesni_deps="sse42"
2502 avx_deps="sse42"
2503 xop_deps="avx"
2504 fma3_deps="avx"
2505 fma4_deps="avx"
2506 avx2_deps="avx"
2507 avx512_deps="avx2"
2508
2509 mmx_external_deps="x86asm"
2510 mmx_inline_deps="inline_asm x86"
2511 mmx_suggest="mmx_external mmx_inline"
2512
2513 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2514     eval dep=\$${ext}_deps
2515     eval ${ext}_external_deps='"${dep}_external"'
2516     eval ${ext}_inline_deps='"${dep}_inline"'
2517     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2518 done
2519
2520 aligned_stack_if_any="aarch64 ppc x86"
2521 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2522 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2523 fast_unaligned_if_any="aarch64 ppc x86"
2524 simd_align_16_if_any="altivec neon sse"
2525 simd_align_32_if_any="avx"
2526 simd_align_64_if_any="avx512"
2527
2528 # system capabilities
2529 linux_perf_deps="linux_perf_event_h"
2530 symver_if_any="symver_asm_label symver_gnu_asm"
2531 valgrind_backtrace_conflict="optimizations"
2532 valgrind_backtrace_deps="valgrind_valgrind_h"
2533
2534 # threading support
2535 atomics_gcc_if="sync_val_compare_and_swap"
2536 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2537 atomics_win32_if="MemoryBarrier"
2538 atomics_native_if_any="$ATOMICS_LIST"
2539 w32threads_deps="atomics_native"
2540 threads_if_any="$THREADS_LIST"
2541
2542 # subsystems
2543 cbs_av1_select="cbs"
2544 cbs_h264_select="cbs golomb"
2545 cbs_h265_select="cbs golomb"
2546 cbs_jpeg_select="cbs"
2547 cbs_mpeg2_select="cbs"
2548 cbs_vp9_select="cbs"
2549 dct_select="rdft"
2550 dirac_parse_select="golomb"
2551 dnn_suggest="libtensorflow"
2552 error_resilience_select="me_cmp"
2553 faandct_deps="faan"
2554 faandct_select="fdctdsp"
2555 faanidct_deps="faan"
2556 faanidct_select="idctdsp"
2557 h264dsp_select="startcode"
2558 hevcparse_select="golomb"
2559 frame_thread_encoder_deps="encoders threads"
2560 intrax8_select="blockdsp idctdsp"
2561 mdct_select="fft"
2562 mdct15_select="fft"
2563 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2564 mpeg_er_select="error_resilience"
2565 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2566 mpegaudiodsp_select="dct"
2567 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2568 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2569 vc1dsp_select="h264chroma qpeldsp startcode"
2570 rdft_select="fft"
2571
2572 # decoders / encoders
2573 aac_decoder_select="adts_header mdct15 mdct sinewin"
2574 aac_fixed_decoder_select="adts_header mdct sinewin"
2575 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2576 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2577 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2578 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2579 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2580 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2581 adpcm_g722_decoder_select="g722dsp"
2582 adpcm_g722_encoder_select="g722dsp"
2583 aic_decoder_select="golomb idctdsp"
2584 alac_encoder_select="lpc"
2585 als_decoder_select="bswapdsp"
2586 amrnb_decoder_select="lsp"
2587 amrwb_decoder_select="lsp"
2588 amv_decoder_select="sp5x_decoder exif"
2589 amv_encoder_select="jpegtables mpegvideoenc"
2590 ape_decoder_select="bswapdsp llauddsp"
2591 apng_decoder_deps="zlib"
2592 apng_encoder_deps="zlib"
2593 apng_encoder_select="llvidencdsp"
2594 aptx_decoder_select="audio_frame_queue"
2595 aptx_encoder_select="audio_frame_queue"
2596 aptx_hd_decoder_select="audio_frame_queue"
2597 aptx_hd_encoder_select="audio_frame_queue"
2598 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2599 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2600 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2601 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2602 atrac1_decoder_select="mdct sinewin"
2603 atrac3_decoder_select="mdct"
2604 atrac3p_decoder_select="mdct sinewin"
2605 atrac9_decoder_select="mdct"
2606 avrn_decoder_select="exif jpegtables"
2607 bink_decoder_select="blockdsp hpeldsp"
2608 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2609 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2610 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2611 clearvideo_decoder_select="idctdsp"
2612 cllc_decoder_select="bswapdsp"
2613 comfortnoise_encoder_select="lpc"
2614 cook_decoder_select="audiodsp mdct sinewin"
2615 cscd_decoder_select="lzo"
2616 cscd_decoder_suggest="zlib"
2617 dca_decoder_select="mdct"
2618 dds_decoder_select="texturedsp"
2619 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2620 dnxhd_decoder_select="blockdsp idctdsp"
2621 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2622 dolby_e_decoder_select="mdct"
2623 dvvideo_decoder_select="dvprofile idctdsp"
2624 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2625 dxa_decoder_deps="zlib"
2626 dxv_decoder_select="lzf texturedsp"
2627 eac3_decoder_select="ac3_decoder"
2628 eac3_encoder_select="ac3_encoder"
2629 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2630 eatgq_decoder_select="aandcttables"
2631 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2632 exr_decoder_deps="zlib"
2633 ffv1_decoder_select="rangecoder"
2634 ffv1_encoder_select="rangecoder"
2635 ffvhuff_decoder_select="huffyuv_decoder"
2636 ffvhuff_encoder_select="huffyuv_encoder"
2637 fic_decoder_select="golomb"
2638 flac_decoder_select="flacdsp"
2639 flac_encoder_select="bswapdsp flacdsp lpc"
2640 flashsv2_decoder_deps="zlib"
2641 flashsv2_encoder_deps="zlib"
2642 flashsv_decoder_deps="zlib"
2643 flashsv_encoder_deps="zlib"
2644 flv_decoder_select="h263_decoder"
2645 flv_encoder_select="h263_encoder"
2646 fourxm_decoder_select="blockdsp bswapdsp"
2647 fraps_decoder_select="bswapdsp huffman"
2648 g2m_decoder_deps="zlib"
2649 g2m_decoder_select="blockdsp idctdsp jpegtables"
2650 g729_decoder_select="audiodsp"
2651 h261_decoder_select="mpegvideo"
2652 h261_encoder_select="mpegvideoenc"
2653 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2654 h263_encoder_select="h263dsp mpegvideoenc"
2655 h263i_decoder_select="h263_decoder"
2656 h263p_decoder_select="h263_decoder"
2657 h263p_encoder_select="h263_encoder"
2658 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2659 h264_decoder_suggest="error_resilience"
2660 hap_decoder_select="snappy texturedsp"
2661 hap_encoder_deps="libsnappy"
2662 hap_encoder_select="texturedspenc"
2663 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2664 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2665 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2666 hymt_decoder_select="huffyuv_decoder"
2667 iac_decoder_select="imc_decoder"
2668 imc_decoder_select="bswapdsp fft mdct sinewin"
2669 indeo3_decoder_select="hpeldsp"
2670 indeo4_decoder_select="ividsp"
2671 indeo5_decoder_select="ividsp"
2672 interplay_video_decoder_select="hpeldsp"
2673 jpegls_decoder_select="mjpeg_decoder"
2674 jv_decoder_select="blockdsp"
2675 lagarith_decoder_select="llviddsp"
2676 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2677 magicyuv_decoder_select="llviddsp"
2678 magicyuv_encoder_select="llvidencdsp"
2679 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2680 metasound_decoder_select="lsp mdct sinewin"
2681 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2682 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2683 mjpeg_encoder_select="jpegtables mpegvideoenc"
2684 mjpegb_decoder_select="mjpeg_decoder"
2685 mlp_decoder_select="mlp_parser"
2686 mlp_encoder_select="lpc"
2687 motionpixels_decoder_select="bswapdsp"
2688 mp1_decoder_select="mpegaudio"
2689 mp1float_decoder_select="mpegaudio"
2690 mp2_decoder_select="mpegaudio"
2691 mp2float_decoder_select="mpegaudio"
2692 mp3_decoder_select="mpegaudio"
2693 mp3adu_decoder_select="mpegaudio"
2694 mp3adufloat_decoder_select="mpegaudio"
2695 mp3float_decoder_select="mpegaudio"
2696 mp3on4_decoder_select="mpegaudio"
2697 mp3on4float_decoder_select="mpegaudio"
2698 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2699 mpc8_decoder_select="mpegaudiodsp"
2700 mpegvideo_decoder_select="mpegvideo"
2701 mpeg1video_decoder_select="mpegvideo"
2702 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2703 mpeg2video_decoder_select="mpegvideo"
2704 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2705 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2706 mpeg4_encoder_select="h263_encoder"
2707 msa1_decoder_select="mss34dsp"
2708 mscc_decoder_deps="zlib"
2709 msmpeg4v1_decoder_select="h263_decoder"
2710 msmpeg4v2_decoder_select="h263_decoder"
2711 msmpeg4v2_encoder_select="h263_encoder"
2712 msmpeg4v3_decoder_select="h263_decoder"
2713 msmpeg4v3_encoder_select="h263_encoder"
2714 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2715 mts2_decoder_select="mss34dsp"
2716 mwsc_decoder_deps="zlib"
2717 mxpeg_decoder_select="mjpeg_decoder"
2718 nellymoser_decoder_select="mdct sinewin"
2719 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2720 nuv_decoder_select="idctdsp lzo"
2721 on2avc_decoder_select="mdct"
2722 opus_decoder_deps="swresample"
2723 opus_decoder_select="mdct15"
2724 opus_encoder_select="audio_frame_queue mdct15"
2725 png_decoder_deps="zlib"
2726 png_encoder_deps="zlib"
2727 png_encoder_select="llvidencdsp"
2728 prores_decoder_select="blockdsp idctdsp"
2729 prores_encoder_select="fdctdsp"
2730 qcelp_decoder_select="lsp"
2731 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2732 ra_144_decoder_select="audiodsp"
2733 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2734 ralf_decoder_select="golomb"
2735 rasc_decoder_deps="zlib"
2736 rawvideo_decoder_select="bswapdsp"
2737 rscc_decoder_deps="zlib"
2738 rtjpeg_decoder_select="me_cmp"
2739 rv10_decoder_select="h263_decoder"
2740 rv10_encoder_select="h263_encoder"
2741 rv20_decoder_select="h263_decoder"
2742 rv20_encoder_select="h263_encoder"
2743 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2744 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2745 screenpresso_decoder_deps="zlib"
2746 shorten_decoder_select="bswapdsp"
2747 sipr_decoder_select="lsp"
2748 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2749 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2750 sonic_decoder_select="golomb rangecoder"
2751 sonic_encoder_select="golomb rangecoder"
2752 sonic_ls_encoder_select="golomb rangecoder"
2753 sp5x_decoder_select="mjpeg_decoder"
2754 speedhq_decoder_select="mpegvideo"
2755 srgc_decoder_deps="zlib"
2756 svq1_decoder_select="hpeldsp"
2757 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2758 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2759 svq3_decoder_suggest="zlib"
2760 tak_decoder_select="audiodsp"
2761 tdsc_decoder_deps="zlib"
2762 tdsc_decoder_select="mjpeg_decoder"
2763 theora_decoder_select="vp3_decoder"
2764 thp_decoder_select="mjpeg_decoder"
2765 tiff_decoder_suggest="zlib lzma"
2766 tiff_encoder_suggest="zlib"
2767 truehd_decoder_select="mlp_parser"
2768 truehd_encoder_select="lpc"
2769 truemotion2_decoder_select="bswapdsp"
2770 truespeech_decoder_select="bswapdsp"
2771 tscc_decoder_deps="zlib"
2772 twinvq_decoder_select="mdct lsp sinewin"
2773 txd_decoder_select="texturedsp"
2774 utvideo_decoder_select="bswapdsp llviddsp"
2775 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2776 vble_decoder_select="llviddsp"
2777 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2778 vc1image_decoder_select="vc1_decoder"
2779 vorbis_decoder_select="mdct"
2780 vorbis_encoder_select="audio_frame_queue mdct"
2781 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2782 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2783 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2784 vp6a_decoder_select="vp6_decoder"
2785 vp6f_decoder_select="vp6_decoder"
2786 vp7_decoder_select="h264pred videodsp vp8dsp"
2787 vp8_decoder_select="h264pred videodsp vp8dsp"
2788 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2789 wcmv_decoder_deps="zlib"
2790 webp_decoder_select="vp8_decoder exif"
2791 wmalossless_decoder_select="llauddsp"
2792 wmapro_decoder_select="mdct sinewin wma_freqs"
2793 wmav1_decoder_select="mdct sinewin wma_freqs"
2794 wmav1_encoder_select="mdct sinewin wma_freqs"
2795 wmav2_decoder_select="mdct sinewin wma_freqs"
2796 wmav2_encoder_select="mdct sinewin wma_freqs"
2797 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2798 wmv1_decoder_select="h263_decoder"
2799 wmv1_encoder_select="h263_encoder"
2800 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2801 wmv2_encoder_select="h263_encoder wmv2dsp"
2802 wmv3_decoder_select="vc1_decoder"
2803 wmv3image_decoder_select="wmv3_decoder"
2804 xma1_decoder_select="wmapro_decoder"
2805 xma2_decoder_select="wmapro_decoder"
2806 zerocodec_decoder_deps="zlib"
2807 zlib_decoder_deps="zlib"
2808 zlib_encoder_deps="zlib"
2809 zmbv_decoder_deps="zlib"
2810 zmbv_encoder_deps="zlib"
2811
2812 # hardware accelerators
2813 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2814 cuda_deps="ffnvcodec"
2815 cuvid_deps="ffnvcodec"
2816 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2817 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2818 ffnvcodec_deps_any="libdl LoadLibrary"
2819 nvdec_deps="ffnvcodec"
2820 vaapi_x11_deps="xlib"
2821 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2822 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2823 xvmc_deps="X11_extensions_XvMClib_h"
2824
2825 h263_vaapi_hwaccel_deps="vaapi"
2826 h263_vaapi_hwaccel_select="h263_decoder"
2827 h263_videotoolbox_hwaccel_deps="videotoolbox"
2828 h263_videotoolbox_hwaccel_select="h263_decoder"
2829 h264_d3d11va_hwaccel_deps="d3d11va"
2830 h264_d3d11va_hwaccel_select="h264_decoder"
2831 h264_d3d11va2_hwaccel_deps="d3d11va"
2832 h264_d3d11va2_hwaccel_select="h264_decoder"
2833 h264_dxva2_hwaccel_deps="dxva2"
2834 h264_dxva2_hwaccel_select="h264_decoder"
2835 h264_nvdec_hwaccel_deps="nvdec"
2836 h264_nvdec_hwaccel_select="h264_decoder"
2837 h264_vaapi_hwaccel_deps="vaapi"
2838 h264_vaapi_hwaccel_select="h264_decoder"
2839 h264_vdpau_hwaccel_deps="vdpau"
2840 h264_vdpau_hwaccel_select="h264_decoder"
2841 h264_videotoolbox_hwaccel_deps="videotoolbox"
2842 h264_videotoolbox_hwaccel_select="h264_decoder"
2843 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2844 hevc_d3d11va_hwaccel_select="hevc_decoder"
2845 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2846 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2847 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2848 hevc_dxva2_hwaccel_select="hevc_decoder"
2849 hevc_nvdec_hwaccel_deps="nvdec"
2850 hevc_nvdec_hwaccel_select="hevc_decoder"
2851 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2852 hevc_vaapi_hwaccel_select="hevc_decoder"
2853 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2854 hevc_vdpau_hwaccel_select="hevc_decoder"
2855 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2856 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2857 mjpeg_nvdec_hwaccel_deps="nvdec"
2858 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2859 mjpeg_vaapi_hwaccel_deps="vaapi"
2860 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2861 mpeg_xvmc_hwaccel_deps="xvmc"
2862 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2863 mpeg1_nvdec_hwaccel_deps="nvdec"
2864 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2865 mpeg1_vdpau_hwaccel_deps="vdpau"
2866 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2867 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2868 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2869 mpeg1_xvmc_hwaccel_deps="xvmc"
2870 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2871 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2872 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2873 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2874 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_dxva2_hwaccel_deps="dxva2"
2876 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_nvdec_hwaccel_deps="nvdec"
2878 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2879 mpeg2_vaapi_hwaccel_deps="vaapi"
2880 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2881 mpeg2_vdpau_hwaccel_deps="vdpau"
2882 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2883 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2884 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2885 mpeg2_xvmc_hwaccel_deps="xvmc"
2886 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2887 mpeg4_nvdec_hwaccel_deps="nvdec"
2888 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2889 mpeg4_vaapi_hwaccel_deps="vaapi"
2890 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2891 mpeg4_vdpau_hwaccel_deps="vdpau"
2892 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2893 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2894 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2895 vc1_d3d11va_hwaccel_deps="d3d11va"
2896 vc1_d3d11va_hwaccel_select="vc1_decoder"
2897 vc1_d3d11va2_hwaccel_deps="d3d11va"
2898 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2899 vc1_dxva2_hwaccel_deps="dxva2"
2900 vc1_dxva2_hwaccel_select="vc1_decoder"
2901 vc1_nvdec_hwaccel_deps="nvdec"
2902 vc1_nvdec_hwaccel_select="vc1_decoder"
2903 vc1_vaapi_hwaccel_deps="vaapi"
2904 vc1_vaapi_hwaccel_select="vc1_decoder"
2905 vc1_vdpau_hwaccel_deps="vdpau"
2906 vc1_vdpau_hwaccel_select="vc1_decoder"
2907 vp8_nvdec_hwaccel_deps="nvdec"
2908 vp8_nvdec_hwaccel_select="vp8_decoder"
2909 vp8_vaapi_hwaccel_deps="vaapi"
2910 vp8_vaapi_hwaccel_select="vp8_decoder"
2911 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2912 vp9_d3d11va_hwaccel_select="vp9_decoder"
2913 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2914 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2915 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2916 vp9_dxva2_hwaccel_select="vp9_decoder"
2917 vp9_nvdec_hwaccel_deps="nvdec"
2918 vp9_nvdec_hwaccel_select="vp9_decoder"
2919 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2920 vp9_vaapi_hwaccel_select="vp9_decoder"
2921 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2922 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2923 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2924 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2925 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2926 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2927
2928 # hardware-accelerated codecs
2929 omx_deps="libdl pthreads"
2930 omx_rpi_select="omx"
2931 qsv_deps="libmfx"
2932 qsvdec_select="qsv"
2933 qsvenc_select="qsv"
2934 qsvvpp_select="qsv"
2935 vaapi_encode_deps="vaapi"
2936 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2937
2938 hwupload_cuda_filter_deps="ffnvcodec"
2939 scale_npp_filter_deps="ffnvcodec libnpp"
2940 scale_cuda_filter_deps="cuda_sdk"
2941 thumbnail_cuda_filter_deps="cuda_sdk"
2942 transpose_npp_filter_deps="ffnvcodec libnpp"
2943
2944 amf_deps_any="libdl LoadLibrary"
2945 nvenc_deps="ffnvcodec"
2946 nvenc_deps_any="libdl LoadLibrary"
2947 nvenc_encoder_deps="nvenc"
2948
2949 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2950 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2951 h264_amf_encoder_deps="amf"
2952 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2953 h264_cuvid_decoder_deps="cuvid"
2954 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2955 h264_mediacodec_decoder_deps="mediacodec"
2956 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2957 h264_mmal_decoder_deps="mmal"
2958 h264_nvenc_encoder_deps="nvenc"
2959 h264_omx_encoder_deps="omx"
2960 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2961 h264_qsv_encoder_select="qsvenc"
2962 h264_rkmpp_decoder_deps="rkmpp"
2963 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2964 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2965 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2966 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2967 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2968 hevc_amf_encoder_deps="amf"
2969 hevc_cuvid_decoder_deps="cuvid"
2970 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2971 hevc_mediacodec_decoder_deps="mediacodec"
2972 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2973 hevc_nvenc_encoder_deps="nvenc"
2974 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2975 hevc_qsv_encoder_select="hevcparse qsvenc"
2976 hevc_rkmpp_decoder_deps="rkmpp"
2977 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2978 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2979 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2980 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2981 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2982 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2983 mjpeg_cuvid_decoder_deps="cuvid"
2984 mjpeg_qsv_encoder_deps="libmfx"
2985 mjpeg_qsv_encoder_select="qsvenc"
2986 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2987 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2988 mpeg1_cuvid_decoder_deps="cuvid"
2989 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2990 mpeg2_crystalhd_decoder_select="crystalhd"
2991 mpeg2_cuvid_decoder_deps="cuvid"
2992 mpeg2_mmal_decoder_deps="mmal"
2993 mpeg2_mediacodec_decoder_deps="mediacodec"
2994 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2995 mpeg2_qsv_encoder_select="qsvenc"
2996 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2997 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2998 mpeg4_crystalhd_decoder_select="crystalhd"
2999 mpeg4_cuvid_decoder_deps="cuvid"
3000 mpeg4_mediacodec_decoder_deps="mediacodec"
3001 mpeg4_mmal_decoder_deps="mmal"
3002 mpeg4_omx_encoder_deps="omx"
3003 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3004 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3005 msmpeg4_crystalhd_decoder_select="crystalhd"
3006 nvenc_h264_encoder_select="h264_nvenc_encoder"
3007 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3008 vc1_crystalhd_decoder_select="crystalhd"
3009 vc1_cuvid_decoder_deps="cuvid"
3010 vc1_mmal_decoder_deps="mmal"
3011 vc1_qsv_decoder_select="qsvdec vc1_parser"
3012 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3013 vp8_cuvid_decoder_deps="cuvid"
3014 vp8_mediacodec_decoder_deps="mediacodec"
3015 vp8_qsv_decoder_select="qsvdec vp8_parser"
3016 vp8_rkmpp_decoder_deps="rkmpp"
3017 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3018 vp8_vaapi_encoder_select="vaapi_encode"
3019 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3020 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3021 vp9_cuvid_decoder_deps="cuvid"
3022 vp9_mediacodec_decoder_deps="mediacodec"
3023 vp9_rkmpp_decoder_deps="rkmpp"
3024 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3025 vp9_vaapi_encoder_select="vaapi_encode"
3026 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3027 wmv3_crystalhd_decoder_select="crystalhd"
3028
3029 # parsers
3030 aac_parser_select="adts_header"
3031 av1_parser_select="cbs_av1"
3032 h264_parser_select="golomb h264dsp h264parse"
3033 hevc_parser_select="hevcparse"
3034 mpegaudio_parser_select="mpegaudioheader"
3035 mpegvideo_parser_select="mpegvideo"
3036 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3037 vc1_parser_select="vc1dsp"
3038
3039 # bitstream_filters
3040 aac_adtstoasc_bsf_select="adts_header"
3041 av1_metadata_bsf_select="cbs_av1"
3042 eac3_core_bsf_select="ac3_parser"
3043 filter_units_bsf_select="cbs"
3044 h264_metadata_bsf_deps="const_nan"
3045 h264_metadata_bsf_select="cbs_h264"
3046 h264_redundant_pps_bsf_select="cbs_h264"
3047 hevc_metadata_bsf_select="cbs_h265"
3048 mjpeg2jpeg_bsf_select="jpegtables"
3049 mpeg2_metadata_bsf_select="cbs_mpeg2"
3050 trace_headers_bsf_select="cbs"
3051 truehd_core_bsf_select="mlp_parser"
3052 vp9_metadata_bsf_select="cbs_vp9"
3053
3054 # external libraries
3055 aac_at_decoder_deps="audiotoolbox"
3056 aac_at_decoder_select="aac_adtstoasc_bsf"
3057 ac3_at_decoder_deps="audiotoolbox"
3058 ac3_at_decoder_select="ac3_parser"
3059 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3060 alac_at_decoder_deps="audiotoolbox"
3061 amr_nb_at_decoder_deps="audiotoolbox"
3062 avisynth_deps_any="libdl LoadLibrary"
3063 avisynth_demuxer_deps="avisynth"
3064 avisynth_demuxer_select="riffdec"
3065 eac3_at_decoder_deps="audiotoolbox"
3066 eac3_at_decoder_select="ac3_parser"
3067 gsm_ms_at_decoder_deps="audiotoolbox"
3068 ilbc_at_decoder_deps="audiotoolbox"
3069 mp1_at_decoder_deps="audiotoolbox"
3070 mp2_at_decoder_deps="audiotoolbox"
3071 mp3_at_decoder_deps="audiotoolbox"
3072 mp1_at_decoder_select="mpegaudioheader"
3073 mp2_at_decoder_select="mpegaudioheader"
3074 mp3_at_decoder_select="mpegaudioheader"
3075 pcm_alaw_at_decoder_deps="audiotoolbox"
3076 pcm_mulaw_at_decoder_deps="audiotoolbox"
3077 qdmc_at_decoder_deps="audiotoolbox"
3078 qdm2_at_decoder_deps="audiotoolbox"
3079 aac_at_encoder_deps="audiotoolbox"
3080 aac_at_encoder_select="audio_frame_queue"
3081 alac_at_encoder_deps="audiotoolbox"
3082 alac_at_encoder_select="audio_frame_queue"
3083 ilbc_at_encoder_deps="audiotoolbox"
3084 ilbc_at_encoder_select="audio_frame_queue"
3085 pcm_alaw_at_encoder_deps="audiotoolbox"
3086 pcm_alaw_at_encoder_select="audio_frame_queue"
3087 pcm_mulaw_at_encoder_deps="audiotoolbox"
3088 pcm_mulaw_at_encoder_select="audio_frame_queue"
3089 chromaprint_muxer_deps="chromaprint"
3090 h264_videotoolbox_encoder_deps="pthreads"
3091 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3092 hevc_videotoolbox_encoder_deps="pthreads"
3093 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3094 libaom_av1_decoder_deps="libaom"
3095 libaom_av1_encoder_deps="libaom"
3096 libaom_av1_encoder_select="extract_extradata_bsf"
3097 libcelt_decoder_deps="libcelt"
3098 libcodec2_decoder_deps="libcodec2"
3099 libcodec2_encoder_deps="libcodec2"
3100 libdav1d_decoder_deps="libdav1d"
3101 libdavs2_decoder_deps="libdavs2"
3102 libfdk_aac_decoder_deps="libfdk_aac"
3103 libfdk_aac_encoder_deps="libfdk_aac"
3104 libfdk_aac_encoder_select="audio_frame_queue"
3105 libgme_demuxer_deps="libgme"
3106 libgsm_decoder_deps="libgsm"
3107 libgsm_encoder_deps="libgsm"
3108 libgsm_ms_decoder_deps="libgsm"
3109 libgsm_ms_encoder_deps="libgsm"
3110 libilbc_decoder_deps="libilbc"
3111 libilbc_encoder_deps="libilbc"
3112 libkvazaar_encoder_deps="libkvazaar"
3113 libmodplug_demuxer_deps="libmodplug"
3114 libmp3lame_encoder_deps="libmp3lame"
3115 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3116 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3117 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3118 libopencore_amrnb_encoder_select="audio_frame_queue"
3119 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3120 libopenh264_decoder_deps="libopenh264"
3121 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3122 libopenh264_encoder_deps="libopenh264"
3123 libopenjpeg_decoder_deps="libopenjpeg"
3124 libopenjpeg_encoder_deps="libopenjpeg"
3125 libopenmpt_demuxer_deps="libopenmpt"
3126 libopus_decoder_deps="libopus"
3127 libopus_encoder_deps="libopus"
3128 libopus_encoder_select="audio_frame_queue"
3129 librsvg_decoder_deps="librsvg"
3130 libshine_encoder_deps="libshine"
3131 libshine_encoder_select="audio_frame_queue"
3132 libspeex_decoder_deps="libspeex"
3133 libspeex_encoder_deps="libspeex"
3134 libspeex_encoder_select="audio_frame_queue"
3135 libtheora_encoder_deps="libtheora"
3136 libtwolame_encoder_deps="libtwolame"
3137 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3138 libvorbis_decoder_deps="libvorbis"
3139 libvorbis_encoder_deps="libvorbis libvorbisenc"
3140 libvorbis_encoder_select="audio_frame_queue"
3141 libvpx_vp8_decoder_deps="libvpx"
3142 libvpx_vp8_encoder_deps="libvpx"
3143 libvpx_vp9_decoder_deps="libvpx"
3144 libvpx_vp9_encoder_deps="libvpx"
3145 libwavpack_encoder_deps="libwavpack"
3146 libwavpack_encoder_select="audio_frame_queue"
3147 libwebp_encoder_deps="libwebp"
3148 libwebp_anim_encoder_deps="libwebp"
3149 libx262_encoder_deps="libx262"
3150 libx264_encoder_deps="libx264"
3151 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3152 libx264rgb_encoder_select="libx264_encoder"
3153 libx265_encoder_deps="libx265"
3154 libxavs_encoder_deps="libxavs"
3155 libxavs2_encoder_deps="libxavs2"
3156 libxvid_encoder_deps="libxvid"
3157 libzvbi_teletext_decoder_deps="libzvbi"
3158 vapoursynth_demuxer_deps="vapoursynth"
3159 videotoolbox_suggest="coreservices"
3160 videotoolbox_deps="corefoundation coremedia corevideo"
3161 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3162
3163 # demuxers / muxers
3164 ac3_demuxer_select="ac3_parser"
3165 aiff_muxer_select="iso_media"
3166 asf_demuxer_select="riffdec"
3167 asf_o_demuxer_select="riffdec"
3168 asf_muxer_select="riffenc"
3169 asf_stream_muxer_select="asf_muxer"
3170 avi_demuxer_select="iso_media riffdec exif"
3171 avi_muxer_select="riffenc"
3172 caf_demuxer_select="iso_media riffdec"
3173 caf_muxer_select="iso_media"
3174 dash_muxer_select="mp4_muxer"
3175 dash_demuxer_deps="libxml2"
3176 dirac_demuxer_select="dirac_parser"
3177 dts_demuxer_select="dca_parser"
3178 dtshd_demuxer_select="dca_parser"
3179 dv_demuxer_select="dvprofile"
3180 dv_muxer_select="dvprofile"
3181 dxa_demuxer_select="riffdec"
3182 eac3_demuxer_select="ac3_parser"
3183 f4v_muxer_select="mov_muxer"
3184 fifo_muxer_deps="threads"
3185 flac_demuxer_select="flac_parser"
3186 hds_muxer_select="flv_muxer"
3187 hls_muxer_select="mpegts_muxer"
3188 hls_muxer_suggest="gcrypt openssl"
3189 image2_alias_pix_demuxer_select="image2_demuxer"
3190 image2_brender_pix_demuxer_select="image2_demuxer"
3191 ipod_muxer_select="mov_muxer"
3192 ismv_muxer_select="mov_muxer"
3193 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3194 matroska_audio_muxer_select="matroska_muxer"
3195 matroska_demuxer_select="iso_media riffdec"
3196 matroska_demuxer_suggest="bzlib lzo zlib"
3197 matroska_muxer_select="iso_media riffenc"
3198 mmf_muxer_select="riffenc"
3199 mov_demuxer_select="iso_media riffdec"
3200 mov_demuxer_suggest="zlib"
3201 mov_muxer_select="iso_media riffenc rtpenc_chain"
3202 mp3_demuxer_select="mpegaudio_parser"
3203 mp3_muxer_select="mpegaudioheader"
3204 mp4_muxer_select="mov_muxer"
3205 mpegts_demuxer_select="iso_media"
3206 mpegts_muxer_select="adts_muxer latm_muxer"
3207 mpegtsraw_demuxer_select="mpegts_demuxer"
3208 mxf_d10_muxer_select="mxf_muxer"
3209 mxf_opatom_muxer_select="mxf_muxer"
3210 nut_muxer_select="riffenc"
3211 nuv_demuxer_select="riffdec"
3212 oga_muxer_select="ogg_muxer"
3213 ogg_demuxer_select="dirac_parse"
3214 ogv_muxer_select="ogg_muxer"
3215 opus_muxer_select="ogg_muxer"
3216 psp_muxer_select="mov_muxer"
3217 rtp_demuxer_select="sdp_demuxer"
3218 rtp_muxer_select="golomb"
3219 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3220 rtsp_demuxer_select="http_protocol rtpdec"
3221 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3222 sap_demuxer_select="sdp_demuxer"
3223 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3224 sdp_demuxer_select="rtpdec"
3225 smoothstreaming_muxer_select="ismv_muxer"
3226 spdif_demuxer_select="adts_header"
3227 spdif_muxer_select="adts_header"
3228 spx_muxer_select="ogg_muxer"
3229 swf_demuxer_suggest="zlib"
3230 tak_demuxer_select="tak_parser"
3231 tg2_muxer_select="mov_muxer"
3232 tgp_muxer_select="mov_muxer"
3233 vobsub_demuxer_select="mpegps_demuxer"
3234 w64_demuxer_select="wav_demuxer"
3235 w64_muxer_select="wav_muxer"
3236 wav_demuxer_select="riffdec"
3237 wav_muxer_select="riffenc"
3238 webm_muxer_select="iso_media riffenc"
3239 webm_dash_manifest_demuxer_select="matroska_demuxer"
3240 wtv_demuxer_select="mpegts_demuxer riffdec"
3241 wtv_muxer_select="mpegts_muxer riffenc"
3242 xmv_demuxer_select="riffdec"
3243 xwma_demuxer_select="riffdec"
3244
3245 # indevs / outdevs
3246 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3247 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3248 alsa_indev_deps="alsa"
3249 alsa_outdev_deps="alsa"
3250 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3251 avfoundation_indev_suggest="coregraphics applicationservices"
3252 avfoundation_indev_extralibs="-framework Foundation"
3253 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3254 caca_outdev_deps="libcaca"
3255 decklink_deps_any="libdl LoadLibrary"
3256 decklink_indev_deps="decklink threads"
3257 decklink_indev_extralibs="-lstdc++"
3258 decklink_outdev_deps="decklink threads"
3259 decklink_outdev_suggest="libklvanc"
3260 decklink_outdev_extralibs="-lstdc++"
3261 libndi_newtek_indev_deps="libndi_newtek"
3262 libndi_newtek_indev_extralibs="-lndi"
3263 libndi_newtek_outdev_deps="libndi_newtek"
3264 libndi_newtek_outdev_extralibs="-lndi"
3265 dshow_indev_deps="IBaseFilter"
3266 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3267 fbdev_indev_deps="linux_fb_h"
3268 fbdev_outdev_deps="linux_fb_h"
3269 gdigrab_indev_deps="CreateDIBSection"
3270 gdigrab_indev_extralibs="-lgdi32"
3271 gdigrab_indev_select="bmp_decoder"
3272 iec61883_indev_deps="libiec61883"
3273 jack_indev_deps="libjack"
3274 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3275 kmsgrab_indev_deps="libdrm"
3276 lavfi_indev_deps="avfilter"
3277 libcdio_indev_deps="libcdio"
3278 libdc1394_indev_deps="libdc1394"
3279 openal_indev_deps="openal"
3280 opengl_outdev_deps="opengl"
3281 opengl_outdev_suggest="sdl2"
3282 oss_indev_deps_any="sys_soundcard_h"
3283 oss_outdev_deps_any="sys_soundcard_h"
3284 pulse_indev_deps="libpulse"
3285 pulse_outdev_deps="libpulse"
3286 sdl2_outdev_deps="sdl2"
3287 sndio_indev_deps="sndio"
3288 sndio_outdev_deps="sndio"
3289 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3290 v4l2_indev_suggest="libv4l2"
3291 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3292 v4l2_outdev_suggest="libv4l2"
3293 vfwcap_indev_deps="vfw32 vfwcap_defines"
3294 xcbgrab_indev_deps="libxcb"
3295 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3296 xv_outdev_deps="xlib"
3297
3298 # protocols
3299 async_protocol_deps="threads"
3300 bluray_protocol_deps="libbluray"
3301 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3302 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3303 ffrtmpcrypt_protocol_select="tcp_protocol"
3304 ffrtmphttp_protocol_conflict="librtmp_protocol"
3305 ffrtmphttp_protocol_select="http_protocol"
3306 ftp_protocol_select="tcp_protocol"
3307 gopher_protocol_select="network"
3308 http_protocol_select="tcp_protocol"
3309 http_protocol_suggest="zlib"
3310 httpproxy_protocol_select="tcp_protocol"
3311 httpproxy_protocol_suggest="zlib"
3312 https_protocol_select="tls_protocol"
3313 https_protocol_suggest="zlib"
3314 icecast_protocol_select="http_protocol"
3315 mmsh_protocol_select="http_protocol"
3316 mmst_protocol_select="network"
3317 rtmp_protocol_conflict="librtmp_protocol"
3318 rtmp_protocol_select="tcp_protocol"
3319 rtmp_protocol_suggest="zlib"
3320 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3321 rtmpe_protocol_suggest="zlib"
3322 rtmps_protocol_conflict="librtmp_protocol"
3323 rtmps_protocol_select="tls_protocol"
3324 rtmps_protocol_suggest="zlib"
3325 rtmpt_protocol_select="ffrtmphttp_protocol"
3326 rtmpt_protocol_suggest="zlib"
3327 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3328 rtmpte_protocol_suggest="zlib"
3329 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3330 rtmpts_protocol_suggest="zlib"
3331 rtp_protocol_select="udp_protocol"
3332 schannel_conflict="openssl gnutls libtls mbedtls"
3333 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3334 sctp_protocol_select="network"
3335 securetransport_conflict="openssl gnutls libtls mbedtls"
3336 srtp_protocol_select="rtp_protocol srtp"
3337 tcp_protocol_select="network"
3338 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3339 tls_protocol_select="tcp_protocol"
3340 udp_protocol_select="network"
3341 udplite_protocol_select="network"
3342 unix_protocol_deps="sys_un_h"
3343 unix_protocol_select="network"
3344
3345 # external library protocols
3346 librtmp_protocol_deps="librtmp"
3347 librtmpe_protocol_deps="librtmp"
3348 librtmps_protocol_deps="librtmp"
3349 librtmpt_protocol_deps="librtmp"
3350 librtmpte_protocol_deps="librtmp"
3351 libsmbclient_protocol_deps="libsmbclient gplv3"
3352 libsrt_protocol_deps="libsrt"
3353 libsrt_protocol_select="network"
3354 libssh_protocol_deps="libssh"
3355 libtls_conflict="openssl gnutls mbedtls"
3356
3357 # filters
3358 afftdn_filter_deps="avcodec"
3359 afftdn_filter_select="fft"
3360 afftfilt_filter_deps="avcodec"
3361 afftfilt_filter_select="fft"
3362 afir_filter_deps="avcodec"
3363 afir_filter_select="fft"
3364 amovie_filter_deps="avcodec avformat"
3365 aresample_filter_deps="swresample"
3366 ass_filter_deps="libass"
3367 atempo_filter_deps="avcodec"
3368 atempo_filter_select="rdft"
3369 avgblur_opencl_filter_deps="opencl"
3370 azmq_filter_deps="libzmq"
3371 blackframe_filter_deps="gpl"
3372 bm3d_filter_deps="avcodec"
3373 bm3d_filter_select="dct"
3374 boxblur_filter_deps="gpl"
3375 boxblur_opencl_filter_deps="opencl gpl"
3376 bs2b_filter_deps="libbs2b"
3377 colormatrix_filter_deps="gpl"
3378 convolution_opencl_filter_deps="opencl"
3379 convolve_filter_deps="avcodec"
3380 convolve_filter_select="fft"
3381 coreimage_filter_deps="coreimage appkit"
3382 coreimage_filter_extralibs="-framework OpenGL"
3383 coreimagesrc_filter_deps="coreimage appkit"
3384 coreimagesrc_filter_extralibs="-framework OpenGL"
3385 cover_rect_filter_deps="avcodec avformat gpl"
3386 cropdetect_filter_deps="gpl"
3387 deconvolve_filter_deps="avcodec"
3388 deconvolve_filter_select="fft"
3389 deinterlace_qsv_filter_deps="libmfx"
3390 deinterlace_vaapi_filter_deps="vaapi"
3391 delogo_filter_deps="gpl"
3392 denoise_vaapi_filter_deps="vaapi"
3393 deshake_filter_select="pixelutils"
3394 dilation_opencl_filter_deps="opencl"
3395 drawtext_filter_deps="libfreetype"
3396 drawtext_filter_suggest="libfontconfig libfribidi"
3397 elbg_filter_deps="avcodec"
3398 eq_filter_deps="gpl"
3399 erosion_opencl_filter_deps="opencl"
3400 fftfilt_filter_deps="avcodec"
3401 fftfilt_filter_select="rdft"
3402 fftdnoiz_filter_deps="avcodec"
3403 fftdnoiz_filter_select="fft"
3404 find_rect_filter_deps="avcodec avformat gpl"
3405 firequalizer_filter_deps="avcodec"
3406 firequalizer_filter_select="rdft"
3407 flite_filter_deps="libflite"
3408 framerate_filter_select="scene_sad"
3409 freezedetect_filter_select="scene_sad"
3410 frei0r_filter_deps="frei0r libdl"
3411 frei0r_src_filter_deps="frei0r libdl"
3412 fspp_filter_deps="gpl"
3413 geq_filter_deps="gpl"
3414 histeq_filter_deps="gpl"
3415 hqdn3d_filter_deps="gpl"
3416 interlace_filter_deps="gpl"
3417 kerndeint_filter_deps="gpl"
3418 ladspa_filter_deps="ladspa libdl"
3419 lensfun_filter_deps="liblensfun version3"
3420 lv2_filter_deps="lv2"
3421 mcdeint_filter_deps="avcodec gpl"
3422 movie_filter_deps="avcodec avformat"
3423 mpdecimate_filter_deps="gpl"
3424 mpdecimate_filter_select="pixelutils"
3425 minterpolate_filter_select="scene_sad"
3426 mptestsrc_filter_deps="gpl"
3427 negate_filter_deps="lut_filter"
3428 nnedi_filter_deps="gpl"
3429 ocr_filter_deps="libtesseract"
3430 ocv_filter_deps="libopencv"
3431 openclsrc_filter_deps="opencl"
3432 overlay_opencl_filter_deps="opencl"
3433 overlay_qsv_filter_deps="libmfx"
3434 overlay_qsv_filter_select="qsvvpp"
3435 owdenoise_filter_deps="gpl"
3436 pan_filter_deps="swresample"
3437 perspective_filter_deps="gpl"
3438 phase_filter_deps="gpl"
3439 pp7_filter_deps="gpl"
3440 pp_filter_deps="gpl postproc"
3441 prewitt_opencl_filter_deps="opencl"
3442 procamp_vaapi_filter_deps="vaapi"
3443 program_opencl_filter_deps="opencl"
3444 pullup_filter_deps="gpl"
3445 removelogo_filter_deps="avcodec avformat swscale"
3446 repeatfields_filter_deps="gpl"
3447 resample_filter_deps="avresample"
3448 roberts_opencl_filter_deps="opencl"
3449 rubberband_filter_deps="librubberband"
3450 sab_filter_deps="gpl swscale"
3451 scale2ref_filter_deps="swscale"
3452 scale_filter_deps="swscale"
3453 scale_qsv_filter_deps="libmfx"
3454 select_filter_select="scene_sad"
3455 sharpness_vaapi_filter_deps="vaapi"
3456 showcqt_filter_deps="avcodec avformat swscale"
3457 showcqt_filter_suggest="libfontconfig libfreetype"
3458 showcqt_filter_select="fft"
3459 showfreqs_filter_deps="avcodec"
3460 showfreqs_filter_select="fft"
3461 showspectrum_filter_deps="avcodec"
3462 showspectrum_filter_select="fft"
3463 showspectrumpic_filter_deps="avcodec"
3464 showspectrumpic_filter_select="fft"
3465 signature_filter_deps="gpl avcodec avformat"
3466 smartblur_filter_deps="gpl swscale"
3467 sobel_opencl_filter_deps="opencl"
3468 sofalizer_filter_deps="libmysofa avcodec"
3469 sofalizer_filter_select="fft"
3470 spectrumsynth_filter_deps="avcodec"
3471 spectrumsynth_filter_select="fft"
3472 spp_filter_deps="gpl avcodec"
3473 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3474 sr_filter_deps="avformat swscale"
3475 sr_filter_select="dnn"
3476 stereo3d_filter_deps="gpl"
3477 subtitles_filter_deps="avformat avcodec libass"
3478 super2xsai_filter_deps="gpl"
3479 pixfmts_super2xsai_test_deps="super2xsai_filter"
3480 tinterlace_filter_deps="gpl"
3481 tinterlace_merge_test_deps="tinterlace_filter"
3482 tinterlace_pad_test_deps="tinterlace_filter"
3483 tonemap_filter_deps="const_nan"
3484 tonemap_opencl_filter_deps="opencl const_nan"
3485 transpose_opencl_filter_deps="opencl"
3486 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3487 unsharp_opencl_filter_deps="opencl"
3488 uspp_filter_deps="gpl avcodec"
3489 vaguedenoiser_filter_deps="gpl"
3490 vidstabdetect_filter_deps="libvidstab"
3491 vidstabtransform_filter_deps="libvidstab"
3492 libvmaf_filter_deps="libvmaf pthreads"
3493 zmq_filter_deps="libzmq"
3494 zoompan_filter_deps="swscale"
3495 zscale_filter_deps="libzimg const_nan"
3496 scale_vaapi_filter_deps="vaapi"
3497 vpp_qsv_filter_deps="libmfx"
3498 vpp_qsv_filter_select="qsvvpp"
3499 yadif_cuda_filter_deps="cuda_sdk"
3500
3501 # examples
3502 avio_dir_cmd_deps="avformat avutil"
3503 avio_reading_deps="avformat avcodec avutil"
3504 decode_audio_example_deps="avcodec avutil"
3505 decode_video_example_deps="avcodec avutil"
3506 demuxing_decoding_example_deps="avcodec avformat avutil"
3507 encode_audio_example_deps="avcodec avutil"
3508 encode_video_example_deps="avcodec avutil"
3509 extract_mvs_example_deps="avcodec avformat avutil"
3510 filter_audio_example_deps="avfilter avutil"
3511 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3512 filtering_video_example_deps="avfilter avcodec avformat avutil"
3513 http_multiclient_example_deps="avformat avutil fork"
3514 hw_decode_example_deps="avcodec avformat avutil"
3515 metadata_example_deps="avformat avutil"
3516 muxing_example_deps="avcodec avformat avutil swscale"
3517 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3518 remuxing_example_deps="avcodec avformat avutil"
3519 resampling_audio_example_deps="avutil swresample"
3520 scaling_video_example_deps="avutil swscale"
3521 transcode_aac_example_deps="avcodec avformat swresample"
3522 transcoding_example_deps="avfilter avcodec avformat avutil"
3523 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3524 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3525
3526 # EXTRALIBS_LIST
3527 cpu_init_extralibs="pthreads_extralibs"
3528 cws2fws_extralibs="zlib_extralibs"
3529
3530 # libraries, in any order
3531 avcodec_deps="avutil"
3532 avcodec_suggest="libm"
3533 avcodec_select="null_bsf"
3534 avdevice_deps="avformat avcodec avutil"
3535 avdevice_suggest="libm"
3536 avfilter_deps="avutil"
3537 avfilter_suggest="libm"
3538 avformat_deps="avcodec avutil"
3539 avformat_suggest="libm network zlib"
3540 avresample_deps="avutil"
3541 avresample_suggest="libm"
3542 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3543 postproc_deps="avutil gpl"
3544 postproc_suggest="libm"
3545 swresample_deps="avutil"
3546 swresample_suggest="libm libsoxr"
3547 swscale_deps="avutil"
3548 swscale_suggest="libm"
3549
3550 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3551 avfilter_extralibs="pthreads_extralibs"
3552 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3553
3554 # programs
3555 ffmpeg_deps="avcodec avfilter avformat"
3556 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3557                null_filter
3558                trim_filter"
3559 ffmpeg_suggest="ole32 psapi shell32"
3560 ffplay_deps="avcodec avformat swscale swresample sdl2"
3561 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3562 ffplay_suggest="shell32"
3563 ffprobe_deps="avcodec avformat"
3564 ffprobe_suggest="shell32"
3565
3566 # documentation
3567 podpages_deps="perl"
3568 manpages_deps="perl pod2man"
3569 htmlpages_deps="perl"
3570 htmlpages_deps_any="makeinfo_html texi2html"
3571 txtpages_deps="perl makeinfo"
3572 doc_deps_any="manpages htmlpages podpages txtpages"
3573
3574 # default parameters
3575
3576 logfile="ffbuild/config.log"
3577
3578 # installation paths
3579 prefix_default="/usr/local"
3580 bindir_default='${prefix}/bin'
3581 datadir_default='${prefix}/share/ffmpeg'
3582 docdir_default='${prefix}/share/doc/ffmpeg'
3583 incdir_default='${prefix}/include'
3584 libdir_default='${prefix}/lib'
3585 mandir_default='${prefix}/share/man'
3586
3587 # toolchain
3588 ar_default="ar"
3589 cc_default="gcc"
3590 cxx_default="g++"
3591 host_cc_default="gcc"
3592 doxygen_default="doxygen"
3593 install="install"
3594 ln_s_default="ln -s -f"
3595 nm_default="nm -g"
3596 pkg_config_default=pkg-config
3597 ranlib_default="ranlib"
3598 strip_default="strip"
3599 version_script='--version-script'
3600 objformat="elf32"
3601 x86asmexe_default="nasm"
3602 windres_default="windres"
3603 nvcc_default="nvcc"
3604 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3605 striptype="direct"
3606
3607 # OS
3608 target_os_default=$(tolower $(uname -s))
3609 host_os=$target_os_default
3610
3611 # machine
3612 if test "$target_os_default" = aix; then
3613     arch_default=$(uname -p)
3614     strip_default="strip -X32_64"
3615     nm_default="nm -g -X32_64"
3616 else
3617     arch_default=$(uname -m)
3618 fi
3619 cpu="generic"
3620 intrinsics="none"
3621
3622 # configurable options
3623 enable $PROGRAM_LIST
3624 enable $DOCUMENT_LIST
3625 enable $EXAMPLE_LIST
3626 enable $(filter_out avresample $LIBRARY_LIST)
3627 enable stripping
3628
3629 enable asm
3630 enable debug
3631 enable doc
3632 enable faan faandct faanidct
3633 enable optimizations
3634 enable runtime_cpudetect
3635 enable safe_bitstream_reader
3636 enable static
3637 enable swscale_alpha
3638 enable valgrind_backtrace
3639
3640 sws_max_filter_size_default=256
3641 set_default sws_max_filter_size
3642
3643 # internal components are enabled by default
3644 enable $EXTRALIBS_LIST
3645
3646 # Avoid external, non-system, libraries getting enabled by dependency resolution
3647 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3648
3649 # build settings
3650 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3651 LIBPREF="lib"
3652 LIBSUF=".a"
3653 FULLNAME='$(NAME)$(BUILDSUF)'
3654 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3655 SLIBPREF="lib"
3656 SLIBSUF=".so"
3657 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3658 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3659 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3660 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3661 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3662 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3663 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3664
3665 asflags_filter=echo
3666 cflags_filter=echo
3667 ldflags_filter=echo
3668
3669 AS_C='-c'
3670 AS_O='-o $@'
3671 CC_C='-c'
3672 CC_E='-E -o $@'
3673 CC_O='-o $@'
3674 CXX_C='-c'
3675 CXX_O='-o $@'
3676 OBJCC_C='-c'
3677 OBJCC_E='-E -o $@'
3678 OBJCC_O='-o $@'
3679 X86ASM_O='-o $@'
3680 LD_O='-o $@'
3681 LD_LIB='-l%'
3682 LD_PATH='-L'
3683 HOSTCC_C='-c'
3684 HOSTCC_E='-E -o $@'
3685 HOSTCC_O='-o $@'
3686 HOSTLD_O='-o $@'
3687 NVCC_C='-c'
3688 NVCC_O='-o $@'
3689
3690 host_extralibs='-lm'
3691 host_cflags_filter=echo
3692 host_ldflags_filter=echo
3693
3694 target_path='$(CURDIR)'
3695
3696 # since the object filename is not given with the -MM flag, the compiler
3697 # is only able to print the basename, and we must add the path ourselves
3698 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3699 DEPFLAGS='-MM'
3700
3701 mkdir -p ffbuild
3702
3703 # find source path
3704 if test -f configure; then
3705     source_path=.
3706 else
3707     source_path=$(cd $(dirname "$0"); pwd)
3708     case "$source_path" in
3709         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3710     esac
3711     test -e "$source_path/config.h" &&
3712         die "Out of tree builds are impossible with config.h in source dir."
3713 fi
3714
3715 for v in "$@"; do
3716     r=${v#*=}
3717     l=${v%"$r"}
3718     r=$(sh_quote "$r")
3719     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3720 done
3721
3722 find_things_extern(){
3723     thing=$1
3724     pattern=$2
3725     file=$source_path/$3
3726     out=${4:-$thing}
3727     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3728 }
3729
3730 find_filters_extern(){
3731     file=$source_path/$1
3732     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3733 }
3734
3735 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3736 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3737 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3738 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3739 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3740 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3741 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3742 CODEC_LIST="
3743     $ENCODER_LIST
3744     $DECODER_LIST
3745 "
3746 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3747 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3748 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3749 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3750
3751 AVCODEC_COMPONENTS_LIST="
3752     $BSF_LIST
3753     $DECODER_LIST
3754     $ENCODER_LIST
3755     $HWACCEL_LIST
3756     $PARSER_LIST
3757 "
3758
3759 AVDEVICE_COMPONENTS_LIST="
3760     $INDEV_LIST
3761     $OUTDEV_LIST
3762 "
3763
3764 AVFILTER_COMPONENTS_LIST="
3765     $FILTER_LIST
3766 "
3767
3768 AVFORMAT_COMPONENTS_LIST="
3769     $DEMUXER_LIST
3770     $MUXER_LIST
3771     $PROTOCOL_LIST
3772 "
3773
3774 ALL_COMPONENTS="
3775     $AVCODEC_COMPONENTS_LIST
3776     $AVDEVICE_COMPONENTS_LIST
3777     $AVFILTER_COMPONENTS_LIST
3778     $AVFORMAT_COMPONENTS_LIST
3779 "
3780
3781 for n in $COMPONENT_LIST; do
3782     v=$(toupper ${n%s})_LIST
3783     eval enable \$$v
3784     eval ${n}_if_any="\$$v"
3785 done
3786
3787 enable $ARCH_EXT_LIST
3788
3789 die_unknown(){
3790     echo "Unknown option \"$1\"."
3791     echo "See $0 --help for available options."
3792     exit 1
3793 }
3794
3795 print_in_columns() {
3796     cols=$(expr $ncols / 24)
3797     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3798 }
3799
3800 show_list() {
3801     suffix=_$1
3802     shift
3803     echo $* | sed s/$suffix//g | print_in_columns
3804     exit 0
3805 }
3806
3807 rand_list(){
3808     IFS=', '
3809     set -- $*
3810     unset IFS
3811     for thing; do
3812         comp=${thing%:*}
3813         prob=${thing#$comp}
3814         prob=${prob#:}
3815         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3816         echo "prob ${prob:-0.5}"
3817         printf '%s\n' $comp
3818     done
3819 }
3820
3821 do_random(){
3822     action=$1
3823     shift
3824     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3825     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3826 }
3827
3828 for opt do
3829     optval="${opt#*=}"
3830     case "$opt" in
3831         --extra-ldflags=*)
3832             add_ldflags $optval
3833         ;;
3834         --extra-ldexeflags=*)
3835             add_ldexeflags $optval
3836         ;;
3837         --extra-ldsoflags=*)
3838             add_ldsoflags $optval
3839         ;;
3840         --extra-ldlibflags=*)
3841             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3842                  "removed in the future. Use --extra-ldsoflags instead."
3843             add_ldsoflags $optval
3844         ;;
3845         --extra-libs=*)
3846             add_extralibs $optval
3847         ;;
3848         --disable-devices)
3849             disable $INDEV_LIST $OUTDEV_LIST
3850         ;;
3851         --enable-debug=*)
3852             debuglevel="$optval"
3853         ;;
3854         --disable-programs)
3855             disable $PROGRAM_LIST
3856         ;;
3857         --disable-everything)
3858             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3859         ;;
3860         --disable-all)
3861             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3862             disable $LIBRARY_LIST $PROGRAM_LIST doc
3863             enable avutil
3864         ;;
3865         --enable-random|--disable-random)
3866             action=${opt%%-random}
3867             do_random ${action#--} $COMPONENT_LIST
3868         ;;
3869         --enable-random=*|--disable-random=*)
3870             action=${opt%%-random=*}
3871             do_random ${action#--} $optval
3872         ;;
3873         --enable-sdl)
3874             enable sdl2
3875         ;;
3876         --enable-*=*|--disable-*=*)
3877             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3878             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3879             eval list=\$$(toupper $thing)_LIST
3880             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3881             list=$(filter "$name" $list)
3882             [ "$list" = "" ] && warn "Option $opt did not match anything"
3883             $action $list
3884         ;;
3885         --enable-yasm|--disable-yasm)
3886             warn "The ${opt} option is only provided for compatibility and will be\n"\
3887                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3888             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3889         ;;
3890         --yasmexe=*)
3891             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3892                  "removed in the future. Use --x86asmexe instead."
3893             x86asmexe="$optval"
3894         ;;
3895         --enable-?*|--disable-?*)
3896             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3897             if is_in $option $COMPONENT_LIST; then
3898                 test $action = disable && action=unset
3899                 eval $action \$$(toupper ${option%s})_LIST
3900             elif is_in $option $CMDLINE_SELECT; then
3901                 $action $option
3902             else
3903                 die_unknown $opt
3904             fi
3905         ;;
3906         --list-*)
3907             NAME="${opt#--list-}"
3908             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3909             NAME=${NAME%s}
3910             eval show_list $NAME \$$(toupper $NAME)_LIST
3911         ;;
3912         --help|-h) show_help
3913         ;;
3914         --quiet|-q) quiet=yes
3915         ;;
3916         --fatal-warnings) enable fatal_warnings
3917         ;;
3918         --libfuzzer=*)
3919             libfuzzer_path="$optval"
3920         ;;
3921         *)
3922             optname="${opt%%=*}"
3923             optname="${optname#--}"
3924             optname=$(echo "$optname" | sed 's/-/_/g')
3925             if is_in $optname $CMDLINE_SET; then
3926                 eval $optname='$optval'
3927             elif is_in $optname $CMDLINE_APPEND; then
3928                 append $optname "$optval"
3929             else
3930                 die_unknown $opt
3931             fi
3932         ;;
3933     esac
3934 done
3935
3936 for e in $env; do
3937     eval "export $e"
3938 done
3939
3940 if disabled autodetect; then
3941
3942     # Unless iconv is explicitely disabled by the user, we still want to probe
3943     # for the iconv from the libc.
3944     disabled iconv || enable libc_iconv
3945
3946     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3947     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3948 fi
3949 # Mark specifically enabled, but normally autodetected libraries as requested.
3950 for lib in $AUTODETECT_LIBS; do
3951     enabled $lib && request $lib
3952 done
3953 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3954 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3955 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3956
3957 disabled logging && logfile=/dev/null
3958
3959 # command line configuration sanity checks
3960
3961 # we need to build at least one lib type
3962 if ! enabled_any static shared; then
3963     cat <<EOF
3964 At least one library type must be built.
3965 Specify --enable-static to build the static libraries or --enable-shared to
3966 build the shared libraries as well. To only build the shared libraries specify
3967 --disable-static in addition to --enable-shared.
3968 EOF
3969     exit 1
3970 fi
3971
3972 die_license_disabled() {
3973     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3974 }
3975
3976 die_license_disabled_gpl() {
3977     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3978 }
3979
3980 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3981 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3982
3983 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3984 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3985
3986 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3987
3988 if enabled nonfree; then
3989     license="nonfree and unredistributable"
3990 elif enabled gplv3; then
3991     license="GPL version 3 or later"
3992 elif enabled lgplv3; then
3993     license="LGPL version 3 or later"
3994 elif enabled gpl; then
3995     license="GPL version 2 or later"
3996 else
3997     license="LGPL version 2.1 or later"
3998 fi
3999
4000 enabled_all gnutls openssl &&
4001     die "GnuTLS and OpenSSL must not be enabled at the same time."
4002
4003 enabled_all gnutls mbedtls &&
4004     die "GnuTLS and mbedTLS must not be enabled at the same time."
4005
4006 enabled_all openssl mbedtls &&
4007     die "OpenSSL and mbedTLS must not be enabled at the same time."
4008
4009 # Disable all the library-specific components if the library itself
4010 # is disabled, see AVCODEC_LIST and following _LIST variables.
4011
4012 disable_components(){
4013     disabled ${1} && disable $(
4014         eval components="\$$(toupper ${1})_COMPONENTS"
4015         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4016     )
4017 }
4018
4019 map 'disable_components $v' $LIBRARY_LIST
4020
4021 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4022 set >> $logfile
4023
4024 test -n "$valgrind" && toolchain="valgrind-memcheck"
4025
4026 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4027     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4028     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4029 }
4030
4031 case "$toolchain" in
4032     *-asan)
4033         cc_default="${toolchain%-asan}"
4034         add_cflags  -fsanitize=address
4035         add_ldflags -fsanitize=address
4036     ;;
4037     *-msan)
4038         cc_default="${toolchain%-msan}"
4039         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4040         add_ldflags -fsanitize=memory
4041     ;;
4042     *-tsan)
4043         cc_default="${toolchain%-tsan}"
4044         add_cflags  -fsanitize=thread
4045         add_ldflags -fsanitize=thread
4046         case "$toolchain" in
4047             gcc-tsan)
4048                 add_cflags  -fPIC
4049                 add_ldflags -fPIC
4050                 ;;
4051         esac
4052     ;;
4053     *-usan)
4054         cc_default="${toolchain%-usan}"
4055         add_cflags  -fsanitize=undefined
4056         add_ldflags -fsanitize=undefined
4057     ;;
4058     valgrind-*)
4059         target_exec_default="valgrind"
4060         case "$toolchain" in
4061             valgrind-massif)
4062                 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"
4063                 ;;
4064             valgrind-memcheck)
4065                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4066                 ;;
4067         esac
4068     ;;
4069     msvc)
4070         # Check whether the current MSVC version needs the C99 converter.
4071         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4072         # support enough of C99 to build ffmpeg. Default to the new
4073         # behaviour if the regexp was unable to match anything, since this
4074         # successfully parses the version number of existing supported
4075         # versions that require the converter (MSVC 2010 and 2012).
4076         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4077         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4078             cc_default="cl"
4079             cxx_default="cl"
4080         else
4081             die "Unsupported MSVC version (2013 or newer required)"
4082         fi
4083         ld_default="$source_path/compat/windows/mslink"
4084         nm_default="dumpbin -symbols"
4085         ar_default="lib"
4086         case "$arch" in
4087         aarch64|arm64)
4088             as_default="armasm64"
4089             ;;
4090         arm*)
4091             as_default="armasm"
4092             ;;
4093         esac
4094         target_os_default="win32"
4095         # Use a relative path for TMPDIR. This makes sure all the
4096         # ffconf temp files are written with a relative path, avoiding
4097         # issues with msys/win32 path conversion for MSVC parameters
4098         # such as -Fo<file> or -out:<file>.
4099         TMPDIR=.
4100     ;;
4101     icl)
4102         cc_default="icl"
4103         ld_default="xilink"
4104         nm_default="dumpbin -symbols"
4105         ar_default="xilib"
4106         target_os_default="win32"
4107         TMPDIR=.
4108     ;;
4109     gcov)
4110         add_cflags  -fprofile-arcs -ftest-coverage
4111         add_ldflags -fprofile-arcs -ftest-coverage
4112     ;;
4113     llvm-cov)
4114         add_cflags -fprofile-arcs -ftest-coverage
4115         add_ldflags --coverage
4116     ;;
4117     hardened)
4118         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4119         add_cflags   -fno-strict-overflow -fstack-protector-all
4120         add_ldflags  -Wl,-z,relro -Wl,-z,now
4121         add_cflags   -fPIE
4122         add_ldexeflags -fPIE -pie
4123     ;;
4124     ?*)
4125         die "Unknown toolchain $toolchain"
4126     ;;
4127 esac
4128
4129 if test -n "$cross_prefix"; then
4130     test -n "$arch" && test -n "$target_os" ||
4131         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4132     enable cross_compile
4133 fi
4134
4135 set_default target_os
4136 if test "$target_os" = android; then
4137     cc_default="clang"
4138 fi
4139
4140 ar_default="${cross_prefix}${ar_default}"
4141 cc_default="${cross_prefix}${cc_default}"
4142 cxx_default="${cross_prefix}${cxx_default}"
4143 nm_default="${cross_prefix}${nm_default}"
4144 pkg_config_default="${cross_prefix}${pkg_config_default}"
4145 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4146     ranlib_default="${cross_prefix}${ranlib_default} -D"
4147 else
4148     ranlib_default="${cross_prefix}${ranlib_default}"
4149 fi
4150 strip_default="${cross_prefix}${strip_default}"
4151 windres_default="${cross_prefix}${windres_default}"
4152
4153 sysinclude_default="${sysroot}/usr/include"
4154
4155 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4156     target_exec x86asmexe nvcc
4157 enabled cross_compile || host_cc_default=$cc
4158 set_default host_cc
4159
4160 pkg_config_fail_message=""
4161 if ! $pkg_config --version >/dev/null 2>&1; then
4162     warn "$pkg_config not found, library detection may fail."
4163     pkg_config=false
4164 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4165     pkg_config_fail_message="
4166 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4167 fi
4168
4169 if test $doxygen != $doxygen_default && \
4170   ! $doxygen --version >/dev/null 2>&1; then
4171     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4172 fi
4173
4174 exesuf() {
4175     case $1 in
4176         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4177     esac
4178 }
4179
4180 EXESUF=$(exesuf $target_os)
4181 HOSTEXESUF=$(exesuf $host_os)
4182
4183 # set temporary file name
4184 : ${TMPDIR:=$TEMPDIR}
4185 : ${TMPDIR:=$TMP}
4186 : ${TMPDIR:=/tmp}
4187
4188 if [ -n "$tempprefix" ] ; then
4189     mktemp(){
4190         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4191         echo "$tmpname"
4192         mkdir "$tmpname"
4193     }
4194 elif ! test_cmd mktemp -u XXXXXX; then
4195     # simple replacement for missing mktemp
4196     # NOT SAFE FOR GENERAL USE
4197     mktemp(){
4198         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4199         echo "$tmpname"
4200         mkdir "$tmpname"
4201     }
4202 fi
4203
4204 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4205     die "Unable to create temporary directory in $TMPDIR."
4206
4207 tmpfile(){
4208     tmp="${FFTMPDIR}/test"$2
4209     (set -C; exec > $tmp) 2> /dev/null ||
4210         die "Unable to create temporary file in $FFTMPDIR."
4211     eval $1=$tmp
4212 }
4213
4214 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4215 trap 'exit 2' INT
4216
4217 tmpfile TMPASM .asm
4218 tmpfile TMPC   .c
4219 tmpfile TMPCPP .cpp
4220 tmpfile TMPE   $EXESUF
4221 tmpfile TMPH   .h
4222 tmpfile TMPM   .m
4223 tmpfile TMPO   .o
4224 tmpfile TMPS   .S
4225 tmpfile TMPSH  .sh
4226 tmpfile TMPV   .ver
4227
4228 unset -f mktemp
4229
4230 chmod +x $TMPE
4231
4232 # make sure we can execute files in $TMPDIR
4233 cat > $TMPSH 2>> $logfile <<EOF
4234 #! /bin/sh
4235 EOF
4236 chmod +x $TMPSH >> $logfile 2>&1
4237 if ! $TMPSH >> $logfile 2>&1; then
4238     cat <<EOF
4239 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4240 variable to another directory and make sure that it is not mounted noexec.
4241 EOF
4242     die "Sanity test failed."
4243 fi
4244
4245 armasm_flags(){
4246     for flag; do
4247         case $flag in
4248             # Filter out MSVC cl.exe options from cflags that shouldn't
4249             # be passed to gas-preprocessor
4250             -M[TD]*)                                            ;;
4251             *)                  echo $flag                      ;;
4252         esac
4253    done
4254 }
4255
4256 cparser_flags(){
4257     for flag; do
4258         case $flag in
4259             -Wno-switch)             echo -Wno-switch-enum ;;
4260             -Wno-format-zero-length) ;;
4261             -Wdisabled-optimization) ;;
4262             -Wno-pointer-sign)       echo -Wno-other ;;
4263             *)                       echo $flag ;;
4264         esac
4265     done
4266 }
4267
4268 msvc_common_flags(){
4269     for flag; do
4270         case $flag in
4271             # In addition to specifying certain flags under the compiler
4272             # specific filters, they must be specified here as well or else the
4273             # generic catch all at the bottom will print the original flag.
4274             -Wall)                ;;
4275             -Wextra)              ;;
4276             -std=c99)             ;;
4277             # Common flags
4278             -fomit-frame-pointer) ;;
4279             -g)                   echo -Z7 ;;
4280             -fno-math-errno)      ;;
4281             -fno-common)          ;;
4282             -fno-signed-zeros)    ;;
4283             -fPIC)                ;;
4284             -mthumb)              ;;
4285             -march=*)             ;;
4286             -lz)                  echo zlib.lib ;;
4287             -lx264)               echo libx264.lib ;;
4288             -lstdc++)             ;;
4289             -l*)                  echo ${flag#-l}.lib ;;
4290             -LARGEADDRESSAWARE)   echo $flag ;;
4291             -L*)                  echo -libpath:${flag#-L} ;;
4292             *)                    echo $flag ;;
4293         esac
4294     done
4295 }
4296
4297 msvc_flags(){
4298     msvc_common_flags "$@"
4299     for flag; do
4300         case $flag in
4301             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4302                                        -wd4554 ;;
4303             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4304                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4305                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4306                                        -wd4307 \
4307                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4308         esac
4309     done
4310 }
4311
4312 icl_flags(){
4313     msvc_common_flags "$@"
4314     for flag; do
4315         case $flag in
4316             # Despite what Intel's documentation says -Wall, which is supported
4317             # on Windows, does enable remarks so disable them here.
4318             -Wall)                echo $flag -Qdiag-disable:remark ;;
4319             -std=c99)             echo -Qstd=c99 ;;
4320             -flto)                echo -ipo ;;
4321         esac
4322     done
4323 }
4324
4325 icc_flags(){
4326     for flag; do
4327         case $flag in
4328             -flto)                echo -ipo ;;
4329             *)                    echo $flag ;;
4330         esac
4331     done
4332 }
4333
4334 suncc_flags(){
4335     for flag; do
4336         case $flag in
4337             -march=*|-mcpu=*)
4338                 case "${flag#*=}" in
4339                     native)                   echo -xtarget=native       ;;
4340                     v9|niagara)               echo -xarch=sparc          ;;
4341                     ultrasparc)               echo -xarch=sparcvis       ;;
4342                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4343                     i586|pentium)             echo -xchip=pentium        ;;
4344                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4345                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4346                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4347                     pentium4*)          echo -xtarget=pentium4           ;;
4348                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4349                     *-sse3)             echo -xarch=sse3                 ;;
4350                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4351                     bonnell)                   echo -xarch=ssse3         ;;
4352                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4353                     westmere)                  echo -xtarget=westmere    ;;
4354                     silvermont)                echo -xarch=sse4_2        ;;
4355                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4356                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4357                                                echo -xarch=avx           ;;
4358                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4359                     btver1)                    echo -xarch=amdsse4a      ;;
4360                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4361                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4362                     k8|opteron|athlon64|athlon-fx)
4363                                                echo -xarch=sse2a         ;;
4364                     athlon*)                   echo -xarch=pentium_proa  ;;
4365                 esac
4366                 ;;
4367             -std=c99)             echo -xc99              ;;
4368             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4369             -fPIC)                echo -KPIC -xcode=pic32 ;;
4370             -W*,*)                echo $flag              ;;
4371             -f*-*|-W*|-mimpure-text)                      ;;
4372             -shared)              echo -G                 ;;
4373             *)                    echo $flag              ;;
4374         esac
4375     done
4376 }
4377
4378 probe_cc(){
4379     pfx=$1
4380     _cc=$2
4381     first=$3
4382
4383     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4384     unset _ld_o _ldflags _ld_lib _ld_path
4385     unset _depflags _DEPCMD _DEPFLAGS
4386     _flags_filter=echo
4387
4388     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4389         true # no-op to avoid reading stdin in following checks
4390     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4391         _type=llvm_gcc
4392         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4393         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4394         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4395         _cflags_speed='-O3'
4396         _cflags_size='-Os'
4397     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4398         _type=gcc
4399         gcc_version=$($_cc --version | head -n1)
4400         gcc_basever=$($_cc -dumpversion)
4401         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4402         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4403         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4404         case $gcc_basever in
4405             2) ;;
4406             2.*) ;;
4407             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4408         esac
4409         if [ "$first" = true ]; then
4410             case $gcc_basever in
4411                 4.2*)
4412                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4413             esac
4414         fi
4415         _cflags_speed='-O3'
4416         _cflags_size='-Os'
4417     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4418         _type=icc
4419         _ident=$($_cc --version | head -n1)
4420         _depflags='-MMD'
4421         _cflags_speed='-O3'
4422         _cflags_size='-Os'
4423         _cflags_noopt='-O1'
4424         _flags_filter=icc_flags
4425     elif $_cc -v 2>&1 | grep -q xlc; then
4426         _type=xlc
4427         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4428         _cflags_speed='-O5'
4429         _cflags_size='-O5 -qcompact'
4430     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4431         test -d "$sysroot" || die "No valid sysroot specified."
4432         _type=armcc
4433         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4434         armcc_conf="$PWD/armcc.conf"
4435         $_cc --arm_linux_configure                 \
4436              --arm_linux_config_file="$armcc_conf" \
4437              --configure_sysroot="$sysroot"        \
4438              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4439              die "Error creating armcc configuration file."
4440         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4441         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4442         as_default="${cross_prefix}gcc"
4443         _depflags='-MMD'
4444         _cflags_speed='-O3'
4445         _cflags_size='-Os'
4446     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4447         _type=clang
4448         _ident=$($_cc --version 2>/dev/null | head -n1)
4449         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4450         _cflags_speed='-O3'
4451         _cflags_size='-Oz'
4452     elif $_cc -V 2>&1 | grep -q Sun; then
4453         _type=suncc
4454         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4455         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4456         _DEPFLAGS='-xM1 -xc99'
4457         _ldflags='-std=c99'
4458         _cflags_speed='-O5'
4459         _cflags_size='-O5 -xspace'
4460         _flags_filter=suncc_flags
4461     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4462         _type=pathscale
4463         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4464         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4465         _cflags_speed='-O2'
4466         _cflags_size='-Os'
4467         _flags_filter='filter_out -Wdisabled-optimization'
4468     elif $_cc -v 2>&1 | grep -q Open64; then
4469         _type=open64
4470         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4471         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4472         _cflags_speed='-O2'
4473         _cflags_size='-Os'
4474         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4475     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4476         _type=armasm
4477         _ident=$($_cc | head -n1)
4478         # 4509: "This form of conditional instruction is deprecated"
4479         _flags="-nologo -ignore 4509"
4480         _flags_filter=armasm_flags
4481     elif $_cc 2>&1 | grep -q Intel; then
4482         _type=icl
4483         _ident=$($_cc 2>&1 | head -n1)
4484         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4485         # Not only is O3 broken on 13.x+ but it is slower on all previous
4486         # versions (tested) as well.
4487         _cflags_speed="-O2"
4488         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4489         if $_cc 2>&1 | grep -q Linker; then
4490             _ld_o='-out:$@'
4491         else
4492             _ld_o='-Fe$@'
4493         fi
4494         _cc_o='-Fo$@'
4495         _cc_e='-P'
4496         _flags_filter=icl_flags
4497         _ld_lib='lib%.a'
4498         _ld_path='-libpath:'
4499         # -Qdiag-error to make icl error when seeing certain unknown arguments
4500         _flags='-nologo -Qdiag-error:4044,10157'
4501         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4502         # with MSVC which enables it by default.
4503         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4504         disable stripping
4505     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4506         # lld can emulate multiple different linkers; in ms link.exe mode,
4507         # the -? parameter gives the help output which contains an identifyable
4508         # string, while it gives an error in other modes.
4509         _type=lld-link
4510         # The link.exe mode doesn't have a switch for getting the version,
4511         # but we can force it back to gnu mode and get the version from there.
4512         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4513         _ld_o='-out:$@'
4514         _flags_filter=msvc_flags
4515         _ld_lib='lib%.a'
4516         _ld_path='-libpath:'
4517     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4518         _type=msvc
4519         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4520         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4521         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4522         _cflags_speed="-O2"
4523         _cflags_size="-O1"
4524         _cflags_noopt="-O1"
4525         if $_cc -nologo- 2>&1 | grep -q Linker; then
4526             _ld_o='-out:$@'
4527         else
4528             _ld_o='-Fe$@'
4529         fi
4530         _cc_o='-Fo$@'
4531         _cc_e='-P -Fi$@'
4532         _flags_filter=msvc_flags
4533         _ld_lib='lib%.a'
4534         _ld_path='-libpath:'
4535         _flags='-nologo'
4536         disable stripping
4537     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4538         _type=cparser
4539         _ident=$($_cc --version | head -n1)
4540         _depflags='-MMD'
4541         _cflags_speed='-O4'
4542         _cflags_size='-O2'
4543         _flags_filter=cparser_flags
4544     fi
4545
4546     eval ${pfx}_type=\$_type
4547     eval ${pfx}_ident=\$_ident
4548 }
4549
4550 set_ccvars(){
4551     eval ${1}_C=\${_cc_c-\${${1}_C}}
4552     eval ${1}_E=\${_cc_e-\${${1}_E}}
4553     eval ${1}_O=\${_cc_o-\${${1}_O}}
4554
4555     if [ -n "$_depflags" ]; then
4556         eval ${1}_DEPFLAGS=\$_depflags
4557     else
4558         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4559         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4560         eval DEP${1}FLAGS=\$_flags
4561     fi
4562 }
4563
4564 probe_cc cc "$cc" "true"
4565 cflags_filter=$_flags_filter
4566 cflags_speed=$_cflags_speed
4567 cflags_size=$_cflags_size
4568 cflags_noopt=$_cflags_noopt
4569 add_cflags $_flags $_cflags
4570 cc_ldflags=$_ldflags
4571 set_ccvars CC
4572 set_ccvars CXX
4573
4574 probe_cc hostcc "$host_cc"
4575 host_cflags_filter=$_flags_filter
4576 host_cflags_speed=$_cflags_speed
4577 add_host_cflags  $_flags $_cflags
4578 set_ccvars HOSTCC
4579
4580 test -n "$cc_type" && enable $cc_type ||
4581     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4582
4583 : ${as_default:=$cc}
4584 : ${objcc_default:=$cc}
4585 : ${dep_cc_default:=$cc}
4586 : ${ld_default:=$cc}
4587 : ${host_ld_default:=$host_cc}
4588 set_default ar as objcc dep_cc ld ln_s host_ld windres
4589
4590 probe_cc as "$as"
4591 asflags_filter=$_flags_filter
4592 add_asflags $_flags $_cflags
4593 set_ccvars AS
4594
4595 probe_cc objcc "$objcc"
4596 objcflags_filter=$_flags_filter
4597 add_objcflags $_flags $_cflags
4598 set_ccvars OBJC
4599
4600 probe_cc ld "$ld"
4601 ldflags_filter=$_flags_filter
4602 add_ldflags $_flags $_ldflags
4603 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4604 LD_O=${_ld_o-$LD_O}
4605 LD_LIB=${_ld_lib-$LD_LIB}
4606 LD_PATH=${_ld_path-$LD_PATH}
4607
4608 probe_cc hostld "$host_ld"
4609 host_ldflags_filter=$_flags_filter
4610 add_host_ldflags $_flags $_ldflags
4611 HOSTLD_O=${_ld_o-$HOSTLD_O}
4612
4613 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4614     probe_cc depcc "$dep_cc"
4615     CCDEP=${_DEPCMD:-$DEPCMD}
4616     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4617     DEPCCFLAGS=$_flags
4618 fi
4619
4620 if $ar 2>&1 | grep -q Microsoft; then
4621     arflags="-nologo"
4622     ar_o='-out:$@'
4623 elif $ar 2>&1 | grep -q "\[D\] "; then
4624     arflags="rcD"
4625     ar_o='$@'
4626 else
4627     arflags="rc"
4628     ar_o='$@'
4629 fi
4630
4631 add_cflags $extra_cflags
4632 add_cxxflags $extra_cxxflags
4633 add_objcflags $extra_objcflags
4634 add_asflags $extra_cflags
4635
4636 if test -n "$sysroot"; then
4637     case "$cc_type" in
4638         gcc|llvm_gcc|clang)
4639             add_cppflags --sysroot="$sysroot"
4640             add_ldflags --sysroot="$sysroot"
4641         ;;
4642     esac
4643 fi
4644
4645 if test "$cpu" = host; then
4646     enabled cross_compile &&
4647         die "--cpu=host makes no sense when cross-compiling."
4648
4649     case "$cc_type" in
4650         gcc|llvm_gcc)
4651             check_native(){
4652                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4653                 sed -n "/cc1.*$1=/{
4654                             s/.*$1=\\([^ ]*\\).*/\\1/
4655                             p
4656                             q
4657                         }" $TMPE
4658             }
4659             cpu=$(check_native -march || check_native -mcpu)
4660         ;;
4661         clang)
4662             check_native(){
4663                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4664                 sed -n "/cc1.*-target-cpu /{
4665                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4666                             p
4667                             q
4668                         }" $TMPE
4669             }
4670             cpu=$(check_native -march)
4671         ;;
4672     esac
4673
4674     test "${cpu:-host}" = host &&
4675         die "--cpu=host not supported with compiler $cc"
4676 fi
4677
4678 # Deal with common $arch aliases
4679 case "$arch" in
4680     aarch64|arm64)
4681         arch="aarch64"
4682     ;;
4683     arm*|iPad*|iPhone*)
4684         arch="arm"
4685     ;;
4686     mips*|IP*)
4687         case "$arch" in
4688         *el)
4689             add_cppflags -EL
4690             add_ldflags -EL
4691         ;;
4692         *eb)
4693             add_cppflags -EB
4694             add_ldflags -EB
4695         ;;
4696         esac
4697         arch="mips"
4698     ;;
4699     parisc*|hppa*)
4700         arch="parisc"
4701     ;;
4702     "Power Macintosh"|ppc*|powerpc*)
4703         arch="ppc"
4704     ;;
4705     s390|s390x)
4706         arch="s390"
4707     ;;
4708     sh4|sh)
4709         arch="sh4"
4710     ;;
4711     sun4*|sparc*)
4712         arch="sparc"
4713     ;;
4714     tilegx|tile-gx)
4715         arch="tilegx"
4716     ;;
4717     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4718         arch="x86"
4719     ;;
4720 esac
4721
4722 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4723 enable $arch
4724
4725 # Add processor-specific flags
4726 if enabled aarch64; then
4727
4728     case $cpu in
4729         armv*)
4730             cpuflags="-march=$cpu"
4731         ;;
4732         *)
4733             cpuflags="-mcpu=$cpu"
4734         ;;
4735     esac
4736
4737 elif enabled alpha; then
4738
4739     cpuflags="-mcpu=$cpu"
4740
4741 elif enabled arm; then
4742
4743     check_arm_arch() {
4744         test_cpp_condition stddef.h \
4745             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4746             $cpuflags
4747     }
4748
4749     probe_arm_arch() {
4750         if   check_arm_arch 4;        then echo armv4
4751         elif check_arm_arch 4T;       then echo armv4t
4752         elif check_arm_arch 5;        then echo armv5
4753         elif check_arm_arch 5E;       then echo armv5e
4754         elif check_arm_arch 5T;       then echo armv5t
4755         elif check_arm_arch 5TE;      then echo armv5te
4756         elif check_arm_arch 5TEJ;     then echo armv5te
4757         elif check_arm_arch 6;        then echo armv6
4758         elif check_arm_arch 6J;       then echo armv6j
4759         elif check_arm_arch 6K;       then echo armv6k
4760         elif check_arm_arch 6Z;       then echo armv6z
4761         elif check_arm_arch 6KZ;      then echo armv6zk
4762         elif check_arm_arch 6ZK;      then echo armv6zk
4763         elif check_arm_arch 6T2;      then echo armv6t2
4764         elif check_arm_arch 7;        then echo armv7
4765         elif check_arm_arch 7A  7_A;  then echo armv7-a
4766         elif check_arm_arch 7S;       then echo armv7-a
4767         elif check_arm_arch 7R  7_R;  then echo armv7-r
4768         elif check_arm_arch 7M  7_M;  then echo armv7-m
4769         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4770         elif check_arm_arch 8A  8_A;  then echo armv8-a
4771         fi
4772     }
4773
4774     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4775
4776     case $cpu in
4777         armv*)
4778             cpuflags="-march=$cpu"
4779             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4780         ;;
4781         *)
4782             cpuflags="-mcpu=$cpu"
4783             case $cpu in
4784                 cortex-a*)                               subarch=armv7a  ;;
4785                 cortex-r*)                               subarch=armv7r  ;;
4786                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4787                 arm11*)                                  subarch=armv6   ;;
4788                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4789                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4790                 *)                             subarch=$(probe_arm_arch) ;;
4791             esac
4792         ;;
4793     esac
4794
4795     case "$subarch" in
4796         armv5t*)    enable fast_clz                ;;
4797         armv[6-8]*)
4798             enable fast_clz
4799             disabled fast_unaligned || enable fast_unaligned
4800             ;;
4801     esac
4802
4803 elif enabled avr32; then
4804
4805     case $cpu in
4806         ap7[02]0[0-2])
4807             subarch="avr32_ap"
4808             cpuflags="-mpart=$cpu"
4809         ;;
4810         ap)
4811             subarch="avr32_ap"
4812             cpuflags="-march=$cpu"
4813         ;;
4814         uc3[ab]*)
4815             subarch="avr32_uc"
4816             cpuflags="-mcpu=$cpu"
4817         ;;
4818         uc)
4819             subarch="avr32_uc"
4820             cpuflags="-march=$cpu"
4821         ;;
4822     esac
4823
4824 elif enabled bfin; then
4825
4826     cpuflags="-mcpu=$cpu"
4827
4828 elif enabled mips; then
4829
4830     cpuflags="-march=$cpu"
4831
4832     if [ "$cpu" != "generic" ]; then
4833         disable mips32r2
4834         disable mips32r5
4835         disable mips64r2
4836         disable mips32r6
4837         disable mips64r6
4838         disable loongson2
4839         disable loongson3
4840
4841         case $cpu in
4842             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4843                 enable mips32r2
4844                 disable msa
4845             ;;
4846             p5600|i6400|p6600)
4847                 disable mipsdsp
4848                 disable mipsdspr2
4849             ;;
4850             loongson*)
4851                 enable loongson2
4852                 enable loongson3
4853                 enable local_aligned
4854                 enable simd_align_16
4855                 enable fast_64bit
4856                 enable fast_clz
4857                 enable fast_cmov
4858                 enable fast_unaligned
4859                 disable aligned_stack
4860                 disable mipsdsp
4861                 disable mipsdspr2
4862                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4863                 if [ $cc == gcc ]; then
4864                     gcc_version=$(gcc -dumpversion)
4865                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4866                         expensive_optimization_flag=""
4867                     else
4868                         expensive_optimization_flag="-fno-expensive-optimizations"
4869                     fi
4870                 fi
4871                 case $cpu in
4872                     loongson3*)
4873                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4874                     ;;
4875                     loongson2e)
4876                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4877                     ;;
4878                     loongson2f)
4879                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4880                     ;;
4881                 esac
4882             ;;
4883             *)
4884                 # Unknown CPU. Disable everything.
4885                 warn "unknown CPU. Disabling all MIPS optimizations."
4886                 disable mipsfpu
4887                 disable mipsdsp
4888                 disable mipsdspr2
4889                 disable msa
4890                 disable mmi
4891             ;;
4892         esac
4893
4894         case $cpu in
4895             24kc)
4896                 disable mipsfpu
4897                 disable mipsdsp
4898                 disable mipsdspr2
4899             ;;
4900             24kf*)
4901                 disable mipsdsp
4902                 disable mipsdspr2
4903             ;;
4904             24kec|34kc|1004kc)
4905                 disable mipsfpu
4906                 disable mipsdspr2
4907             ;;
4908             24kef*|34kf*|1004kf*)
4909                 disable mipsdspr2
4910             ;;
4911             74kc)
4912                 disable mipsfpu
4913             ;;
4914             p5600)
4915                 enable mips32r5
4916                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4917             ;;
4918             i6400)
4919                 enable mips64r6
4920                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4921             ;;
4922             p6600)
4923                 enable mips64r6
4924                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4925             ;;
4926         esac
4927     else
4928         # We do not disable anything. Is up to the user to disable the unwanted features.
4929         warn 'generic cpu selected'
4930     fi
4931
4932 elif enabled ppc; then
4933
4934     disable ldbrx
4935
4936     case $(tolower $cpu) in
4937         601|ppc601|powerpc601)
4938             cpuflags="-mcpu=601"
4939             disable altivec
4940         ;;
4941         603*|ppc603*|powerpc603*)
4942             cpuflags="-mcpu=603"
4943             disable altivec
4944         ;;
4945         604*|ppc604*|powerpc604*)
4946             cpuflags="-mcpu=604"
4947             disable altivec
4948         ;;
4949         g3|75*|ppc75*|powerpc75*)
4950             cpuflags="-mcpu=750"
4951             disable altivec
4952         ;;
4953         g4|745*|ppc745*|powerpc745*)
4954             cpuflags="-mcpu=7450"
4955             disable vsx
4956         ;;
4957         74*|ppc74*|powerpc74*)
4958             cpuflags="-mcpu=7400"
4959             disable vsx
4960         ;;
4961         g5|970|ppc970|powerpc970)
4962             cpuflags="-mcpu=970"
4963             disable vsx
4964         ;;
4965         power[3-6]*)
4966             cpuflags="-mcpu=$cpu"
4967             disable vsx
4968         ;;
4969         power[7-8]*)
4970             cpuflags="-mcpu=$cpu"
4971         ;;
4972         cell)
4973             cpuflags="-mcpu=cell"
4974             enable ldbrx
4975             disable vsx
4976         ;;
4977         e500mc)
4978             cpuflags="-mcpu=e500mc"
4979             disable altivec
4980         ;;
4981         e500v2)
4982             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4983             disable altivec
4984             disable dcbzl
4985         ;;
4986         e500)
4987             cpuflags="-mcpu=8540 -mhard-float"
4988             disable altivec
4989             disable dcbzl
4990         ;;
4991     esac
4992
4993 elif enabled sparc; then
4994
4995     case $cpu in
4996         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4997             cpuflags="-mcpu=$cpu"
4998         ;;
4999         ultrasparc*|niagara[234])
5000             cpuflags="-mcpu=$cpu"
5001         ;;
5002     esac
5003
5004 elif enabled x86; then
5005
5006     case $cpu in
5007         i[345]86|pentium)
5008             cpuflags="-march=$cpu"
5009             disable i686
5010             disable mmx
5011         ;;
5012         # targets that do NOT support nopl and conditional mov (cmov)
5013         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5014             cpuflags="-march=$cpu"
5015             disable i686
5016         ;;
5017         # targets that do support nopl and conditional mov (cmov)
5018         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5019         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5020         |amdfam10|barcelona|b[dt]ver*|znver*)
5021             cpuflags="-march=$cpu"
5022             enable i686
5023             enable fast_cmov
5024         ;;
5025         # targets that do support conditional mov but on which it's slow
5026         pentium4|pentium4m|prescott|nocona)
5027             cpuflags="-march=$cpu"
5028             enable i686
5029             disable fast_cmov
5030         ;;
5031     esac
5032
5033 fi
5034
5035 if [ "$cpu" != generic ]; then
5036     add_cflags  $cpuflags
5037     add_asflags $cpuflags
5038     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5039 fi
5040
5041 # compiler sanity check
5042 test_exec <<EOF
5043 int main(void){ return 0; }
5044 EOF
5045 if test "$?" != 0; then
5046     echo "$cc is unable to create an executable file."
5047     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5048         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5049         echo "Only do this if you know what cross compiling means."
5050     fi
5051     die "C compiler test failed."
5052 fi
5053
5054 add_cppflags -D_ISOC99_SOURCE
5055 add_cxxflags -D__STDC_CONSTANT_MACROS
5056 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5057
5058 # some compilers silently accept -std=c11, so we also need to check that the
5059 # version macro is defined properly
5060 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5061     add_cflags -std=c11 ||
5062     check_cflags -std=c99
5063
5064 check_cppflags -D_FILE_OFFSET_BITS=64
5065 check_cppflags -D_LARGEFILE_SOURCE
5066
5067 add_host_cppflags -D_ISOC99_SOURCE
5068 check_host_cflags -std=c99
5069 check_host_cflags -Wall
5070 check_host_cflags $host_cflags_speed
5071
5072 check_64bit(){
5073     arch32=$1
5074     arch64=$2
5075     expr=${3:-'sizeof(void *) > 4'}
5076     test_code cc "" "int test[2*($expr) - 1]" &&
5077         subarch=$arch64 || subarch=$arch32
5078     enable $subarch
5079 }
5080
5081 case "$arch" in
5082     aarch64|alpha|ia64)
5083         enabled shared && enable_weak pic
5084     ;;
5085     mips)
5086         check_64bit mips mips64 '_MIPS_SIM > 1'
5087         enabled shared && enable_weak pic
5088     ;;
5089     parisc)
5090         check_64bit parisc parisc64
5091         enabled shared && enable_weak pic
5092     ;;
5093     ppc)
5094         check_64bit ppc ppc64
5095         enabled shared && enable_weak pic
5096     ;;
5097     s390)
5098         check_64bit s390 s390x
5099         enabled shared && enable_weak pic
5100     ;;
5101     sparc)
5102         check_64bit sparc sparc64
5103         enabled shared && enable_weak pic
5104     ;;
5105     x86)
5106         check_64bit x86_32 x86_64
5107         # Treat x32 as x64 for now. Note it also needs pic if shared
5108         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5109             subarch=x86_64 && enable x86_64 && disable x86_32
5110         if enabled x86_64; then
5111             enabled shared && enable_weak pic
5112             objformat=elf64
5113         fi
5114     ;;
5115 esac
5116
5117 # OS specific
5118 case $target_os in
5119     aix)
5120         SHFLAGS=-shared
5121         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5122         enabled shared && add_ldflags -Wl,-brtl
5123         arflags='-Xany -r -c'
5124         striptype=""
5125         ;;
5126     android)
5127         disable symver
5128         enable section_data_rel_ro
5129         add_cflags -fPIE
5130         add_ldexeflags -fPIE -pie
5131         SLIB_INSTALL_NAME='$(SLIBNAME)'
5132         SLIB_INSTALL_LINKS=
5133         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5134         ;;
5135     haiku)
5136         prefix_default="/boot/common"
5137         network_extralibs="-lnetwork"
5138         host_extralibs=
5139         ;;
5140     sunos)
5141         SHFLAGS='-shared -Wl,-h,$$(@F)'
5142         enabled x86 && append SHFLAGS -mimpure-text
5143         network_extralibs="-lsocket -lnsl"
5144         add_cppflags -D__EXTENSIONS__
5145         # When using suncc to build, the Solaris linker will mark
5146         # an executable with each instruction set encountered by
5147         # the Solaris assembler.  As our libraries contain their own
5148         # guards for processor-specific code, instead suppress
5149         # generation of the HWCAPS ELF section on Solaris x86 only.
5150         enabled_all suncc x86 &&
5151             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5152             add_ldflags -Wl,-M,mapfile
5153         nm_default='nm -P -g'
5154         striptype=""
5155         version_script='-M'
5156         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5157         ;;
5158     netbsd)
5159         disable symver
5160         oss_indev_extralibs="-lossaudio"
5161         oss_outdev_extralibs="-lossaudio"
5162         enabled gcc || check_ldflags -Wl,-zmuldefs
5163         ;;
5164     openbsd|bitrig)
5165         disable symver
5166         striptype=""
5167         SHFLAGS='-shared'
5168         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5169         SLIB_INSTALL_LINKS=
5170         oss_indev_extralibs="-lossaudio"
5171         oss_outdev_extralibs="-lossaudio"
5172         ;;
5173     dragonfly)
5174         disable symver
5175         ;;
5176     freebsd)
5177         ;;
5178     bsd/os)
5179         add_extralibs -lpoll -lgnugetopt
5180         strip="strip -d"
5181         ;;
5182     darwin)
5183         enabled ppc && add_asflags -force_cpusubtype_ALL
5184         install_name_dir_default='$(SHLIBDIR)'
5185         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5186         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5187         strip="${strip} -x"
5188         add_ldflags -Wl,-dynamic,-search_paths_first
5189         check_cflags -Werror=partial-availability
5190         SLIBSUF=".dylib"
5191         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5192         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5193         enabled x86_64 && objformat="macho64" || objformat="macho32"
5194         enabled_any pic shared x86_64 ||
5195             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5196         check_headers dispatch/dispatch.h &&
5197             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5198         if test -n "$sysroot"; then
5199             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5200             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5201         fi
5202         version_script='-exported_symbols_list'
5203         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5204         ;;
5205     msys*)
5206         die "Native MSYS builds are discouraged, please use the MINGW environment."
5207         ;;
5208     mingw32*|mingw64*)
5209         target_os=mingw32
5210         LIBTARGET=i386
5211         if enabled x86_64; then
5212             LIBTARGET="i386:x86-64"
5213         elif enabled arm; then
5214             LIBTARGET="arm"
5215         elif enabled aarch64; then
5216             LIBTARGET="arm64"
5217         fi
5218         if enabled shared; then
5219             # Cannot build both shared and static libs when using dllimport.
5220             disable static
5221         fi
5222         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5223         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5224         shlibdir_default="$bindir_default"
5225         SLIBPREF=""
5226         SLIBSUF=".dll"
5227         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5228         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5229         if test_cmd lib.exe -list; then
5230             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5231             if enabled x86_64; then
5232                 LIBTARGET=x64
5233             fi
5234         else
5235             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5236         fi
5237         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5238         SLIB_INSTALL_LINKS=
5239         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5240         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5241         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5242         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5243         enabled x86_64 && objformat="win64" || objformat="win32"
5244         dlltool="${cross_prefix}dlltool"
5245         ranlib=:
5246         enable dos_paths
5247         check_ldflags -Wl,--nxcompat,--dynamicbase
5248         # Lets work around some stupidity in binutils.
5249         # ld will strip relocations from executables even though we need them
5250         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5251         # however ld then forgets what the entry point should be (oops) so we
5252         # have to manually (re)set it.
5253         if enabled x86_32; then
5254             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5255         elif enabled x86_64; then
5256             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5257             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5258             # Set image base >4GB for extra entropy with HEASLR
5259             add_ldexeflags -Wl,--image-base,0x140000000
5260             append SHFLAGS -Wl,--image-base,0x180000000
5261         fi
5262         ;;
5263     win32|win64)
5264         disable symver
5265         if enabled shared; then
5266             # Link to the import library instead of the normal static library
5267             # for shared libs.
5268             LD_LIB='%.lib'
5269             # Cannot build both shared and static libs with MSVC or icl.
5270             disable static
5271         fi
5272         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5273         shlibdir_default="$bindir_default"
5274         SLIBPREF=""
5275         SLIBSUF=".dll"
5276         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5277         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5278         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5279         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5280         SLIB_INSTALL_LINKS=
5281         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5282         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5283         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5284         enabled x86_64 && objformat="win64" || objformat="win32"
5285         ranlib=:
5286         enable dos_paths
5287         ;;
5288     cygwin*)
5289         target_os=cygwin
5290         shlibdir_default="$bindir_default"
5291         SLIBPREF="cyg"
5292         SLIBSUF=".dll"
5293         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5294         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5295         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5296         SLIB_INSTALL_LINKS=
5297         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5298         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5299         enabled x86_64 && objformat="win64" || objformat="win32"
5300         enable dos_paths
5301         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5302         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5303         ;;
5304     *-dos|freedos|opendos)
5305         network_extralibs="-lsocket"
5306         objformat="coff"
5307         enable dos_paths
5308         ;;
5309     linux)
5310         enable section_data_rel_ro
5311         enabled_any arm aarch64 && enable_weak linux_perf
5312         ;;
5313     irix*)
5314         target_os=irix
5315         ranlib="echo ignoring ranlib"
5316         ;;
5317     os/2*)
5318         strip="lxlite -CS"
5319         striptype=""
5320         objformat="aout"
5321         add_cppflags -D_GNU_SOURCE
5322         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5323         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5324         LIBSUF="_s.a"
5325         SLIBPREF=""
5326         SLIBSUF=".dll"
5327         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5328         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5329         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5330             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5331             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5332             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5333             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5334         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5335             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5336         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5337         SLIB_INSTALL_LINKS=
5338         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5339         enable dos_paths
5340         enable_weak os2threads
5341         ;;
5342     gnu/kfreebsd)
5343         add_cppflags -D_BSD_SOURCE
5344         ;;
5345     gnu)
5346         ;;
5347     qnx)
5348         add_cppflags -D_QNX_SOURCE
5349         network_extralibs="-lsocket"
5350         ;;
5351     symbian)
5352         SLIBSUF=".dll"
5353         enable dos_paths
5354         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5355         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5356         add_ldflags -Wl,--target1-abs,--no-undefined \
5357                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5358                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5359         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5360                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5361                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5362         ;;
5363     minix)
5364         ;;
5365     none)
5366         ;;
5367     *)
5368         die "Unknown OS '$target_os'."
5369         ;;
5370 esac
5371
5372 # test if creating links works
5373 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5374 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5375 mkdir "$link_dest"
5376 $ln_s "$link_dest" "$link_name"
5377 touch "$link_dest/test_file"
5378 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5379     # create link to source path
5380     [ -e src ] && rm src
5381     $ln_s "$source_path" src
5382     source_link=src
5383 else
5384     # creating directory links doesn't work
5385     # fall back to using the full source path
5386     source_link="$source_path"
5387 fi
5388 # cleanup
5389 rm -r "$link_dest"
5390 rm -r "$link_name"
5391
5392 # determine libc flavour
5393
5394 probe_libc(){
5395     pfx=$1
5396     pfx_no_=${pfx%_}
5397     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5398     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5399         eval ${pfx}libc_type=uclibc
5400         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5401     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5402         eval ${pfx}libc_type=glibc
5403         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5404     # MinGW headers can be installed on Cygwin, so check for newlib first.
5405     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5406         eval ${pfx}libc_type=newlib
5407         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5408     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5409     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5410         eval ${pfx}libc_type=mingw64
5411         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5412             add_compat msvcrt/snprintf.o
5413             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5414         fi
5415         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5416         eval test \$${pfx_no_}cc_type = "gcc" &&
5417             add_${pfx}cppflags -D__printf__=__gnu_printf__
5418         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5419             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5420     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5421          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5422         eval ${pfx}libc_type=mingw32
5423         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5424             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5425             die "ERROR: MinGW32 runtime version must be >= 3.15."
5426         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5427         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5428             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5429         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5430             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5431         eval test \$${pfx_no_}cc_type = "gcc" &&
5432             add_${pfx}cppflags -D__printf__=__gnu_printf__
5433     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5434         eval ${pfx}libc_type=msvcrt
5435         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5436             if [ "$pfx" = host_ ]; then
5437                 add_host_cppflags -Dsnprintf=_snprintf
5438             else
5439                 add_compat strtod.o strtod=avpriv_strtod
5440                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5441                                              _snprintf=avpriv_snprintf  \
5442                                              vsnprintf=avpriv_vsnprintf
5443             fi
5444         fi
5445         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5446         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5447         # 0x601 by default unless something else is set by the user.
5448         # This can easily lead to us detecting functions only present
5449         # in such new versions and producing binaries requiring windows 7.0.
5450         # Therefore explicitly set the default to Vista unless the user has
5451         # set something else on the command line.
5452         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5453         # family. For these cases, configure is free to use any functions
5454         # found in the SDK headers by default. (Alternatively, we could force
5455         # _WIN32_WINNT to 0x0602 in that case.)
5456         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5457             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5458 #ifdef WINAPI_FAMILY
5459 #include <winapifamily.h>
5460 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5461 #error not desktop
5462 #endif
5463 #endif
5464 EOF
5465         if [ "$pfx" = "" ]; then
5466             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5467             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5468         fi
5469     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5470         eval ${pfx}libc_type=klibc
5471     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5472         eval ${pfx}libc_type=bionic
5473     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5474         eval ${pfx}libc_type=solaris
5475         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5476     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5477         eval ${pfx}libc_type=djgpp
5478         add_cppflags -U__STRICT_ANSI__
5479         add_cflags "-include $source_path/compat/djgpp/math.h"
5480         add_compat djgpp/math.o
5481     fi
5482     test_${pfx}cc <<EOF
5483 #include <time.h>
5484 void *v = localtime_r;
5485 EOF
5486 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5487 #include <time.h>
5488 void *v = localtime_r;
5489 EOF
5490
5491     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5492 }
5493
5494 probe_libc
5495 probe_libc host_
5496
5497 # hacks for compiler/libc/os combinations
5498
5499 case $libc_type in
5500     bionic)
5501         add_compat strtod.o strtod=avpriv_strtod
5502         ;;
5503 esac
5504
5505 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5506     add_cppflags '-I\$(SRC_PATH)/compat/float'
5507
5508 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5509
5510 set_default libdir
5511 : ${shlibdir_default:="$libdir"}
5512 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5513
5514 set_default $PATHS_LIST
5515 set_default nm
5516
5517 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5518
5519 enable_weak_pic() {
5520     disabled pic && return
5521     enable pic
5522     add_cppflags -DPIC
5523     case "$target_os" in
5524     mingw*|cygwin*|win*)
5525         ;;
5526     *)
5527         add_cflags -fPIC
5528         add_asflags -fPIC
5529         ;;
5530     esac
5531 }
5532
5533 enabled pic && enable_weak_pic
5534
5535 test_cc <<EOF || die "Symbol mangling check failed."
5536 int ff_extern;
5537 EOF
5538 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5539 extern_prefix=${sym%%ff_extern*}
5540
5541 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5542
5543 for restrict_keyword in restrict __restrict__ __restrict ""; do
5544     test_code cc "" "char * $restrict_keyword p" && break
5545 done
5546
5547 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5548
5549 # The global variable ensures the bits appear unchanged in the object file.
5550 test_cc <<EOF || die "endian test failed"
5551 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5552 EOF
5553 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5554
5555 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5556
5557 if ! enabled ppc64 || enabled bigendian; then
5558     disable vsx
5559 fi
5560
5561 check_gas() {
5562     log "check_gas using '$as' as AS"
5563     # :vararg is used on aarch64, arm and ppc altivec
5564     check_as vararg "
5565 .macro m n, y:vararg=0
5566 \n: .int \y
5567 .endm
5568 m x" || return 1
5569     # .altmacro is only used in arm asm
5570     ! enabled arm || check_as gnu_as ".altmacro"
5571 }
5572
5573 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5574     nogas=:
5575     enabled_any arm aarch64 && nogas=die
5576     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5577     as_noop=-v
5578
5579     case $as_type in
5580         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5581         gcc)  gaspp_as_type=gas ;;
5582         *)    gaspp_as_type=$as_type ;;
5583     esac
5584
5585     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5586
5587     test "${as#*gas-preprocessor.pl}" != "$as" ||
5588     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5589         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5590
5591     if ! check_gas ; then
5592         as=${gas:=$as}
5593         check_gas || \
5594             $nogas "GNU assembler not found, install/update gas-preprocessor"
5595     fi
5596
5597     check_as as_func ".func test
5598                       .endfunc"
5599 fi
5600
5601 check_inline_asm inline_asm_labels '"1:\n"'
5602
5603 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5604
5605 if enabled aarch64; then
5606     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5607     # internal assembler in clang 3.3 does not support this instruction
5608     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5609     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5610
5611     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5612
5613 elif enabled alpha; then
5614
5615     check_cflags -mieee
5616
5617 elif enabled arm; then
5618
5619     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5620     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5621 float func(float a, float b){ return a+b; }
5622 EOF
5623     enabled thumb && check_cflags -mthumb || check_cflags -marm
5624
5625     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5626         :
5627     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5628         :
5629     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5630         case "${cross_prefix:-$cc}" in
5631             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5632             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5633 __asm__ (".eabi_attribute 28, 1");
5634 int main(void) { return 0; }
5635 EOF
5636         esac
5637         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5638     fi
5639
5640     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5641     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5642     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5643     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5644     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5645     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5646     enabled setend  && check_insn setend  'setend be'
5647
5648     [ $target_os = linux ] || [ $target_os = android ] ||
5649         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5650             $ARCH_EXT_LIST_ARM
5651
5652     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5653
5654     check_as as_arch_directive ".arch armv7-a"
5655     check_as as_dn_directive   "ra .dn d0.i16"
5656     check_as as_fpu_directive  ".fpu neon"
5657
5658     # llvm's integrated assembler supports .object_arch from llvm 3.5
5659     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5660         check_as as_object_arch ".object_arch armv4"
5661
5662     # MS armasm fails to assemble our PIC constructs
5663     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5664
5665 elif enabled mips; then
5666
5667     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5668     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5669     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5670
5671     # Enable minimum ISA based on selected options
5672     if enabled mips64; then
5673         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5674         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5675         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5676     else
5677         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5678         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5679         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5680         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5681     fi
5682
5683     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5684     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5685     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5686     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5687     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5688
5689     if enabled bigendian && enabled msa; then
5690         disable msa
5691     fi
5692
5693 elif enabled parisc; then
5694
5695     if enabled gcc; then
5696         case $($cc -dumpversion) in
5697             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5698         esac
5699     fi
5700
5701 elif enabled ppc; then
5702
5703     enable local_aligned
5704
5705     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5706     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5707     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5708     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5709
5710     if enabled altivec; then
5711         check_cflags -maltivec -mabi=altivec
5712
5713         # check if our compiler supports Motorola AltiVec C API
5714         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5715                                     vector signed int v2 = (vector signed int) { 1 };
5716                                     v1 = vec_add(v1, v2);"
5717
5718         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5719     fi
5720
5721     if enabled vsx; then
5722         check_cflags -mvsx &&
5723         check_cc vsx altivec.h "int v[4] = { 0 };
5724                                 vector signed int v1 = vec_vsx_ld(0, v);"
5725     fi
5726
5727     if enabled power8; then
5728         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5729     fi
5730
5731 elif enabled x86; then
5732
5733     check_builtin rdtsc    intrin.h   "__rdtsc()"
5734     check_builtin mm_empty mmintrin.h "_mm_empty()"
5735
5736     enable local_aligned
5737
5738     # check whether EBP is available on x86
5739     # As 'i' is stored on the stack, this program will crash
5740     # if the base pointer is used to access it because the
5741     # base pointer is cleared in the inline assembly code.
5742     check_exec_crash <<EOF && enable ebp_available
5743 volatile int i=0;
5744 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5745 return i;
5746 EOF
5747
5748     # check whether EBX is available on x86
5749     check_inline_asm ebx_available '""::"b"(0)' &&
5750         check_inline_asm ebx_available '"":::"%ebx"'
5751
5752     # check whether xmm clobbers are supported
5753     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5754
5755     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5756         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5757
5758     # check whether binutils is new enough to compile SSSE3/MMXEXT
5759     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5760     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5761
5762     probe_x86asm(){
5763         x86asmexe_probe=$1
5764         if test_cmd $x86asmexe_probe -v; then
5765             x86asmexe=$x86asmexe_probe
5766             x86asm_type=nasm
5767             x86asm_debug="-g -F dwarf"
5768             X86ASMDEP=
5769             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5770         elif test_cmd $x86asmexe_probe --version; then
5771             x86asmexe=$x86asmexe_probe
5772             x86asm_type=yasm
5773             x86asm_debug="-g dwarf2"
5774             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5775             X86ASM_DEPFLAGS=
5776         fi
5777         check_x86asm x86asm "movbe ecx, [5]"
5778     }
5779
5780     if ! disabled_any asm mmx x86asm; then
5781         disable x86asm
5782         for program in $x86asmexe nasm yasm; do
5783             probe_x86asm $program && break
5784         done
5785         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5786         X86ASMFLAGS="-f $objformat"
5787         enabled pic               && append X86ASMFLAGS "-DPIC"
5788         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5789         case "$objformat" in
5790             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5791         esac
5792
5793         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5794         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5795         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5796         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5797         check_x86asm cpunop          "CPU amdnop"
5798     fi
5799
5800     case "$cpu" in
5801         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5802             disable fast_clz
5803         ;;
5804     esac
5805
5806 fi
5807
5808 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5809
5810 check_ldflags -Wl,--as-needed
5811 check_ldflags -Wl,-z,noexecstack
5812
5813 if ! disabled network; then
5814     check_func getaddrinfo $network_extralibs
5815     check_func inet_aton $network_extralibs
5816
5817     check_type netdb.h "struct addrinfo"
5818     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5819     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5820     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5821     check_type poll.h "struct pollfd"
5822     check_type netinet/sctp.h "struct sctp_event_subscribe"
5823     check_struct "sys/socket.h" "struct msghdr" msg_flags
5824     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5825     check_type netinet/in.h "struct sockaddr_in6"
5826     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5827     check_type "sys/types.h sys/socket.h" socklen_t
5828
5829     # Prefer arpa/inet.h over winsock2
5830     if check_headers arpa/inet.h ; then
5831         check_func closesocket
5832     elif check_headers winsock2.h ; then
5833         check_func_headers winsock2.h closesocket -lws2 &&
5834             network_extralibs="-lws2" ||
5835         { check_func_headers winsock2.h closesocket -lws2_32 &&
5836             network_extralibs="-lws2_32"; } || disable winsock2_h network
5837         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5838
5839         check_type ws2tcpip.h socklen_t
5840         check_type ws2tcpip.h "struct addrinfo"
5841         check_type ws2tcpip.h "struct group_source_req"
5842         check_type ws2tcpip.h "struct ip_mreq_source"
5843         check_type ws2tcpip.h "struct ipv6_mreq"
5844         check_type winsock2.h "struct pollfd"
5845         check_struct winsock2.h "struct sockaddr" sa_len
5846         check_type ws2tcpip.h "struct sockaddr_in6"
5847         check_type ws2tcpip.h "struct sockaddr_storage"
5848     else
5849         disable network
5850     fi
5851 fi
5852
5853 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5854 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5855 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5856 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5857 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5858 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5859 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5860
5861 case "$custom_allocator" in
5862     jemalloc)
5863         # jemalloc by default does not use a prefix
5864         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5865     ;;
5866     tcmalloc)
5867         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5868         malloc_prefix=tc_
5869     ;;
5870 esac
5871
5872 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5873 check_func  ${malloc_prefix}memalign            && enable memalign
5874 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5875
5876 check_func  access
5877 check_func_headers stdlib.h arc4random
5878 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5879 check_func  fcntl
5880 check_func  fork
5881 check_func  gethrtime
5882 check_func  getopt
5883 check_func  getrusage
5884 check_func  gettimeofday
5885 check_func  isatty
5886 check_func  mkstemp
5887 check_func  mmap
5888 check_func  mprotect
5889 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5890 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5891 check_func  sched_getaffinity
5892 check_func  setrlimit
5893 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5894 check_func  strerror_r
5895 check_func  sysconf
5896 check_func  sysctl
5897 check_func  usleep
5898
5899 check_func_headers conio.h kbhit
5900 check_func_headers io.h setmode
5901 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5902 check_func_headers mach/mach_time.h mach_absolute_time
5903 check_func_headers stdlib.h getenv
5904 check_func_headers sys/stat.h lstat
5905
5906 check_func_headers windows.h GetProcessAffinityMask
5907 check_func_headers windows.h GetProcessTimes
5908 check_func_headers windows.h GetSystemTimeAsFileTime
5909 check_func_headers windows.h LoadLibrary
5910 check_func_headers windows.h MapViewOfFile
5911 check_func_headers windows.h PeekNamedPipe
5912 check_func_headers windows.h SetConsoleTextAttribute
5913 check_func_headers windows.h SetConsoleCtrlHandler
5914 check_func_headers windows.h Sleep
5915 check_func_headers windows.h VirtualAlloc
5916 check_func_headers glob.h glob
5917 enabled xlib &&
5918     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5919
5920 check_headers direct.h
5921 check_headers dirent.h
5922 check_headers dxgidebug.h
5923 check_headers dxva.h
5924 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5925 check_headers io.h
5926 check_headers linux/perf_event.h
5927 check_headers libcrystalhd/libcrystalhd_if.h
5928 check_headers malloc.h
5929 check_headers net/udplite.h
5930 check_headers poll.h
5931 check_headers sys/param.h
5932 check_headers sys/resource.h
5933 check_headers sys/select.h
5934 check_headers sys/time.h
5935 check_headers sys/un.h
5936 check_headers termios.h
5937 check_headers unistd.h
5938 check_headers valgrind/valgrind.h
5939 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5940 check_headers windows.h
5941 check_headers X11/extensions/XvMClib.h
5942 check_headers asm/types.h
5943
5944 # it seems there are versions of clang in some distros that try to use the
5945 # gcc headers, which explodes for stdatomic
5946 # so we also check that atomics actually work here
5947 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5948
5949 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5950 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5951     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5952 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5953 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5954 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5955
5956 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5957 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5958 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5959
5960 enabled appkit       && check_apple_framework AppKit
5961 enabled audiotoolbox && check_apple_framework AudioToolbox
5962 enabled avfoundation && check_apple_framework AVFoundation
5963 enabled coreimage    && check_apple_framework CoreImage
5964 enabled videotoolbox && check_apple_framework VideoToolbox
5965
5966 check_apple_framework CoreFoundation
5967 check_apple_framework CoreMedia
5968 check_apple_framework CoreVideo
5969
5970 enabled avfoundation && {
5971     disable coregraphics applicationservices
5972     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5973     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5974
5975 enabled videotoolbox && {
5976     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5977     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5978 }
5979
5980 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5981
5982 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5983 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5984 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5985 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5986 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5987
5988 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5989 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5990 check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
5991 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5992 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5993 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5994 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5995
5996 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5997
5998 if ! disabled ffnvcodec; then
5999     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
6000           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
6001       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
6002           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
6003 fi
6004
6005 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6006
6007 if ! disabled w32threads && ! enabled pthreads; then
6008     check_func_headers "windows.h process.h" _beginthreadex &&
6009         check_type "windows.h" CONDITION_VARIABLE &&
6010         check_type "windows.h" INIT_ONCE &&
6011         enable w32threads || disable w32threads
6012     if ! enabled w32threads && enabled winrt; then
6013         check_func_headers "windows.h" CreateThread &&
6014             enable w32threads || disable w32threads
6015     fi
6016 fi
6017
6018 # check for some common methods of building with pthread support
6019 # do this before the optional library checks as some of them require pthreads
6020 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6021     if check_lib pthreads pthread.h pthread_join   -pthread &&
6022        check_lib pthreads pthread.h pthread_create -pthread; then
6023         add_cflags -pthread
6024     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6025          check_lib pthreads pthread.h pthread_create -pthreads; then
6026         add_cflags -pthreads
6027     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6028          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6029         add_cflags -ldl -pthread
6030     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6031          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6032         :
6033     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6034          check_lib pthreads pthread.h pthread_create -lpthread; then
6035         :
6036     elif check_func pthread_join && check_func pthread_create; then
6037         enable pthreads
6038     fi
6039     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6040
6041     if enabled pthreads; then
6042         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6043         check_func pthread_cancel $pthreads_extralibs
6044     fi
6045 fi
6046
6047 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6048                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6049 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6050 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6051
6052 # On some systems dynamic loading requires no extra linker flags
6053 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6054
6055 check_lib libm math.h sin -lm
6056
6057 atan2f_args=2
6058 copysign_args=2
6059 hypot_args=2
6060 ldexpf_args=2
6061 powf_args=2
6062
6063 for func in $MATH_FUNCS; do
6064     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6065 done
6066
6067 for func in $COMPLEX_FUNCS; do
6068     eval check_complexfunc $func \${${func}_args:-1}
6069 done
6070
6071 # these are off by default, so fail if requested and not available
6072 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6073 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6074 enabled decklink          && { require_headers DeckLinkAPI.h &&
6075                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6076 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6077 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6078 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6079 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6080 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6081 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6082 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6083 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6084 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6085 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6086 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6087 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6088 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6089                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6090                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6091 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6092 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6093 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.1.0" "dav1d/dav1d.h" dav1d_version
6094 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6095 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6096 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6097 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6098                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6099                                  warn "using libfdk without pkg-config"; } }
6100 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"
6101 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6102 enabled fontconfig        && enable libfontconfig
6103 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6104 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6105 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6106 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6107                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6108 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6109                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6110                                done || die "ERROR: libgsm not found"; }
6111 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6112 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6113 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6114 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6115 # While it may appear that require is being used as a pkg-config
6116 # fallback for libmfx, it is actually being used to detect a different
6117 # installation route altogether.  If libmfx is installed via the Intel
6118 # Media SDK or Intel Media Server Studio, these don't come with
6119 # pkg-config support.  Instead, users should make sure that the build
6120 # can find the libraries and headers through other means.
6121 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6122                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6123 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6124 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6125 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6126                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6127 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6128                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6129                                die "ERROR: libnpp not found"; }
6130 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6131 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6132 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6133                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6134                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6135                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6136 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6137 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6138                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6139 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6140 enabled libopus           && {
6141     enabled libopus_decoder && {
6142         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6143     }
6144     enabled libopus_encoder && {
6145         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6146     }
6147 }
6148 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6149 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6150 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6151 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6152 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6153 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6154                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6155 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6156 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6157 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6158 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6159 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6160 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6161 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6162 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6163 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6164 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6165                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6166                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6167 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6168 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6169 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6170 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6171 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6172                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6173
6174 enabled libvpx            && {
6175     enabled libvpx_vp8_decoder && {
6176         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6177             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6178                 die "ERROR: libvpx decoder version must be >=1.4.0";
6179     }
6180     enabled libvpx_vp8_encoder && {
6181         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6182             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6183                 die "ERROR: libvpx encoder version must be >=1.4.0";
6184     }
6185     enabled libvpx_vp9_decoder && {
6186         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6187             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6188     }
6189     enabled libvpx_vp9_encoder && {
6190         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6191             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6192     }
6193     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6194         die "libvpx enabled but no supported decoders found"
6195     fi
6196 }
6197
6198 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6199 enabled libwebp           && {
6200     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6201     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6202 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6203                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6204                                  warn "using libx264 without pkg-config"; } } &&
6205                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6206                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6207 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6208                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6209 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6210 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6211 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6212 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6213 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6214 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6215                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6216                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6217 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6218 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6219                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6220                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6221                                die "ERROR: mbedTLS not found"; }
6222 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6223 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6224                                { ! enabled cross_compile &&
6225                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6226                                  add_ldflags -L/opt/vc/lib/ &&
6227                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6228                                die "ERROR: mmal not found" &&
6229                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6230 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6231                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6232                                die "ERROR: openal not found"; } &&
6233                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6234                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6235 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6236                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6237                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6238                                die "ERROR: opencl not found"; } &&
6239                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6240                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6241                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6242 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6243                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6244                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6245                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6246                                die "ERROR: opengl not found."
6247                              }
6248 enabled omx               && require_headers OMX_Core.h
6249 enabled omx_rpi           && { check_headers OMX_Core.h ||
6250                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6251                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6252 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6253                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6254                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6255                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6256                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6257                                die "ERROR: openssl not found"; }
6258 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6259                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6260                                { enabled libdrm ||
6261                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6262                              }
6263 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6264
6265
6266 if enabled gcrypt; then
6267     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6268     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6269         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6270         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6271         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6272             die "ERROR: gcrypt not found"
6273         add_cflags $gcrypt_cflags
6274     else
6275         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6276     fi
6277 fi
6278
6279 if enabled sdl2; then
6280     SDL2_CONFIG="${cross_prefix}sdl2-config"
6281     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6282     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6283         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6284         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6285         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6286         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6287         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6288             enable sdl2
6289     fi
6290     if test $target_os = "mingw32"; then
6291         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6292     fi
6293 fi
6294
6295 if enabled decklink; then
6296     case $target_os in
6297         mingw32*|mingw64*|win32|win64)
6298             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6299             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6300             ;;
6301     esac
6302 fi
6303
6304 enabled securetransport &&
6305     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6306     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6307         disable securetransport
6308
6309 enabled securetransport &&
6310     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6311
6312 enabled schannel &&
6313     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6314     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6315     schannel_extralibs="-lsecur32" ||
6316         disable schannel
6317
6318 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6319 enabled makeinfo \
6320     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6321     && enable makeinfo_html || disable makeinfo_html
6322 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6323 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6324 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6325 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6326
6327 # check V4L2 codecs available in the API
6328 check_headers linux/fb.h
6329 check_headers linux/videodev2.h
6330 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6331 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6332 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6333 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6334 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6335 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6336 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6337 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6338 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6339 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6340 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6341
6342 check_headers sys/videoio.h
6343 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6344
6345 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6346 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6347 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6348 # w32api 3.12 had it defined wrong
6349 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6350
6351 check_type "dshow.h" IBaseFilter
6352
6353 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6354 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6355     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6356     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6357     check_headers "dev/ic/bt8xx.h"
6358
6359 if check_struct sys/soundcard.h audio_buf_info bytes; then
6360     enable_sanitized sys/soundcard.h
6361 else
6362     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6363     #include <sys/soundcard.h>
6364     audio_buf_info abc;
6365 EOF
6366 fi
6367
6368 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6369     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6370
6371 enabled libjack &&
6372     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6373
6374 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6375
6376 if enabled libcdio; then
6377     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6378     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6379     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6380     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6381     die "ERROR: No usable libcdio/cdparanoia found"
6382 fi
6383
6384 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6385     disable libxcb_shm libxcb_shape libxcb_xfixes
6386
6387 if enabled libxcb; then
6388     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6389     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6390     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6391 fi
6392
6393 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6394
6395 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6396 # the desktop api partition
6397 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6398 #ifdef WINAPI_FAMILY
6399 #include <winapifamily.h>
6400 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6401 #error desktop, not uwp
6402 #else
6403 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6404 #endif
6405 #else
6406 #error no family set
6407 #endif
6408 EOF
6409
6410 enabled vaapi &&
6411     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6412
6413 if enabled vaapi; then
6414     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6415
6416     if enabled xlib; then
6417         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6418     fi
6419
6420     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6421 fi
6422
6423 if enabled_all opencl libdrm ; then
6424     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6425         enable opencl_drm_beignet
6426     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6427         enable opencl_drm_arm
6428 fi
6429
6430 if enabled_all opencl vaapi ; then
6431     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6432     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6433         enable opencl_vaapi_intel_media
6434 fi
6435
6436 if enabled_all opencl dxva2 ; then
6437     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6438         enable opencl_dxva2
6439 fi
6440
6441 if enabled_all opencl d3d11va ; then
6442     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6443         enable opencl_d3d11
6444 fi
6445
6446 enabled vdpau &&
6447     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6448
6449 enabled vdpau &&
6450     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6451
6452 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6453
6454 if enabled x86; then
6455     case $target_os in
6456         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6457             ;;
6458         *)
6459             disable ffnvcodec cuvid nvdec nvenc
6460             ;;
6461     esac
6462 else
6463     disable ffnvcodec cuvid nvdec nvenc
6464 fi
6465
6466 enabled ffnvcodec && enable cuda
6467
6468 enabled nvenc &&
6469     test_cc -I$source_path <<EOF || disable nvenc
6470 #include <ffnvcodec/nvEncodeAPI.h>
6471 NV_ENCODE_API_FUNCTION_LIST flist;
6472 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6473 int main(void) { return 0; }
6474 EOF
6475
6476 enabled amf &&
6477     check_cpp_condition amf "AMF/core/Version.h" \
6478         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6479
6480 # Funny iconv installations are not unusual, so check it after all flags have been set
6481 if enabled libc_iconv; then
6482     check_func_headers iconv.h iconv
6483 elif enabled iconv; then
6484     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6485 fi
6486
6487 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6488
6489 # add some useful compiler flags if supported
6490 check_cflags -Wdeclaration-after-statement
6491 check_cflags -Wall
6492 check_cflags -Wdisabled-optimization
6493 check_cflags -Wpointer-arith
6494 check_cflags -Wredundant-decls
6495 check_cflags -Wwrite-strings
6496 check_cflags -Wtype-limits
6497 check_cflags -Wundef
6498 check_cflags -Wmissing-prototypes
6499 check_cflags -Wno-pointer-to-int-cast
6500 check_cflags -Wstrict-prototypes
6501 check_cflags -Wempty-body
6502
6503 if enabled extra_warnings; then
6504     check_cflags -Wcast-qual
6505     check_cflags -Wextra
6506     check_cflags -Wpedantic
6507 fi
6508
6509 check_disable_warning(){
6510     warning_flag=-W${1#-Wno-}
6511     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6512 }
6513
6514 test_cflags -Werror=unused-command-line-argument &&
6515     append unknown_warning_flags "-Werror=unused-command-line-argument"
6516 test_cflags -Werror=unknown-warning-option &&
6517     append unknown_warning_flags "-Werror=unknown-warning-option"
6518
6519 check_disable_warning -Wno-parentheses
6520 check_disable_warning -Wno-switch
6521 check_disable_warning -Wno-format-zero-length
6522 check_disable_warning -Wno-pointer-sign
6523 check_disable_warning -Wno-unused-const-variable
6524 check_disable_warning -Wno-bool-operation
6525 check_disable_warning -Wno-char-subscripts
6526
6527 check_disable_warning_headers(){
6528     warning_flag=-W${1#-Wno-}
6529     test_cflags $warning_flag && add_cflags_headers $1
6530 }
6531
6532 check_disable_warning_headers -Wno-deprecated-declarations
6533 check_disable_warning_headers -Wno-unused-variable
6534
6535 test_cc <<EOF && enable blocks_extension
6536 void (^block)(void);
6537 EOF
6538
6539 # add some linker flags
6540 check_ldflags -Wl,--warn-common
6541 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6542 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6543 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6544
6545 # add some strip flags
6546 check_stripflags -x
6547
6548 enabled neon_clobber_test &&
6549     check_ldflags -Wl,--wrap,avcodec_open2              \
6550                   -Wl,--wrap,avcodec_decode_audio4      \
6551                   -Wl,--wrap,avcodec_decode_video2      \
6552                   -Wl,--wrap,avcodec_decode_subtitle2   \
6553                   -Wl,--wrap,avcodec_encode_audio2      \
6554                   -Wl,--wrap,avcodec_encode_video2      \
6555                   -Wl,--wrap,avcodec_encode_subtitle    \
6556                   -Wl,--wrap,avcodec_send_packet        \
6557                   -Wl,--wrap,avcodec_receive_packet     \
6558                   -Wl,--wrap,avcodec_send_frame         \
6559                   -Wl,--wrap,avcodec_receive_frame      \
6560                   -Wl,--wrap,swr_convert                \
6561                   -Wl,--wrap,avresample_convert ||
6562     disable neon_clobber_test
6563
6564 enabled xmm_clobber_test &&
6565     check_ldflags -Wl,--wrap,avcodec_open2              \
6566                   -Wl,--wrap,avcodec_decode_audio4      \
6567                   -Wl,--wrap,avcodec_decode_video2      \
6568                   -Wl,--wrap,avcodec_decode_subtitle2   \
6569                   -Wl,--wrap,avcodec_encode_audio2      \
6570                   -Wl,--wrap,avcodec_encode_video2      \
6571                   -Wl,--wrap,avcodec_encode_subtitle    \
6572                   -Wl,--wrap,avcodec_send_packet        \
6573                   -Wl,--wrap,avcodec_receive_packet     \
6574                   -Wl,--wrap,avcodec_send_frame         \
6575                   -Wl,--wrap,avcodec_receive_frame      \
6576                   -Wl,--wrap,swr_convert                \
6577                   -Wl,--wrap,avresample_convert         \
6578                   -Wl,--wrap,sws_scale ||
6579     disable xmm_clobber_test
6580
6581 check_ld "cc" proper_dce <<EOF
6582 extern const int array[512];
6583 static inline int func(void) { return array[0]; }
6584 int main(void) { return 0; }
6585 EOF
6586
6587 if enabled proper_dce; then
6588     echo "X { local: *; };" > $TMPV
6589     if test_ldflags -Wl,${version_script},$TMPV; then
6590         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6591         quotes='""'
6592         test_cc <<EOF && enable symver_asm_label
6593 void ff_foo(void) __asm__ ("av_foo@VERSION");
6594 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6595 EOF
6596         test_cc <<EOF && enable symver_gnu_asm
6597 __asm__(".symver ff_foo,av_foo@VERSION");
6598 void ff_foo(void) {}
6599 EOF
6600     fi
6601 fi
6602
6603 if [ -z "$optflags" ]; then
6604     if enabled small; then
6605         optflags=$cflags_size
6606     elif enabled optimizations; then
6607         optflags=$cflags_speed
6608     else
6609         optflags=$cflags_noopt
6610     fi
6611 fi
6612
6613 if [ -z "$nvccflags" ]; then
6614     nvccflags=$nvccflags_default
6615 fi
6616
6617 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6618     nvccflags="$nvccflags -m64"
6619 else
6620     nvccflags="$nvccflags -m32"
6621 fi
6622
6623 check_optflags(){
6624     check_cflags "$@"
6625     enabled lto && check_ldflags "$@"
6626 }
6627
6628 check_optflags $optflags
6629 check_optflags -fno-math-errno
6630 check_optflags -fno-signed-zeros
6631
6632 if enabled lto; then
6633     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6634     check_cflags  -flto
6635     check_ldflags -flto $cpuflags
6636     disable inline_asm_direct_symbol_refs
6637 fi
6638
6639 enabled ftrapv && check_cflags -ftrapv
6640
6641 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6642 int x;
6643 EOF
6644
6645
6646 if enabled icc; then
6647     # Just warnings, no remarks
6648     check_cflags -w1
6649     # -wd: Disable following warnings
6650     # 144, 167, 556: -Wno-pointer-sign
6651     # 188: enumerated type mixed with another type
6652     # 1292: attribute "foo" ignored
6653     # 1419: external declaration in primary source file
6654     # 10006: ignoring unknown option -fno-signed-zeros
6655     # 10148: ignoring unknown option -Wno-parentheses
6656     # 10156: ignoring option '-W'; no argument required
6657     # 13200: No EMMS instruction before call to function
6658     # 13203: No EMMS instruction before return from function
6659     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6660     # 11030: Warning unknown option --as-needed
6661     # 10156: ignoring option '-export'; no argument required
6662     check_ldflags -wd10156,11030
6663     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6664     enable ebp_available
6665     # The test above does not test linking
6666     enabled lto && disable symver_asm_label
6667     if enabled x86_32; then
6668         icc_version=$($cc -dumpversion)
6669         test ${icc_version%%.*} -ge 11 &&
6670             check_cflags -falign-stack=maintain-16-byte ||
6671             disable aligned_stack
6672     fi
6673 elif enabled gcc; then
6674     check_optflags -fno-tree-vectorize
6675     check_cflags -Werror=format-security
6676     check_cflags -Werror=implicit-function-declaration
6677     check_cflags -Werror=missing-prototypes
6678     check_cflags -Werror=return-type
6679     check_cflags -Werror=vla
6680     check_cflags -Wformat
6681     check_cflags -fdiagnostics-color=auto
6682     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6683     if enabled x86_32; then
6684         case $target_os in
6685         *bsd*)
6686             # BSDs don't guarantee a 16 byte aligned stack, but we can
6687             # request GCC to try to maintain 16 byte alignment throughout
6688             # function calls. Library entry points that might call assembly
6689             # functions align the stack. (The parameter means 2^4 bytes.)
6690             check_cflags -mpreferred-stack-boundary=4
6691             ;;
6692         esac
6693     fi
6694 elif enabled llvm_gcc; then
6695     check_cflags -mllvm -stack-alignment=16
6696 elif enabled clang; then
6697     if enabled x86_32; then
6698         # Clang doesn't support maintaining alignment without assuming the
6699         # same alignment in every function. If 16 byte alignment would be
6700         # enabled, one would also have to either add attribute_align_arg on
6701         # every single entry point into the libraries or enable -mstackrealign
6702         # (doing stack realignment in every single function).
6703         case $target_os in
6704         mingw32|win32|*bsd*)
6705             disable aligned_stack
6706             ;;
6707         *)
6708             check_cflags -mllvm -stack-alignment=16
6709             check_cflags -mstack-alignment=16
6710             ;;
6711         esac
6712     else
6713         check_cflags -mllvm -stack-alignment=16
6714         check_cflags -mstack-alignment=16
6715     fi
6716     check_cflags -Qunused-arguments
6717     check_cflags -Werror=implicit-function-declaration
6718     check_cflags -Werror=missing-prototypes
6719     check_cflags -Werror=return-type
6720 elif enabled cparser; then
6721     add_cflags -Wno-missing-variable-declarations
6722     add_cflags -Wno-empty-statement
6723 elif enabled armcc; then
6724     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6725     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6726     # 2523: use of inline assembly is deprecated
6727     add_cflags -W${armcc_opt},--diag_suppress=2523
6728     add_cflags -W${armcc_opt},--diag_suppress=1207
6729     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6730     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6731     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6732     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6733 elif enabled pathscale; then
6734     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6735     disable inline_asm
6736 elif enabled_any msvc icl; then
6737     enabled x86_32 && disable aligned_stack
6738     enabled_all x86_32 debug && add_cflags -Oy-
6739     enabled debug && add_ldflags -debug
6740     enable pragma_deprecated
6741     if enabled icl; then
6742         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6743         # (correctly) on icl 13.x.
6744         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6745             add_cflags -Qansi-alias
6746         # Some inline asm is not compilable in debug
6747         if enabled debug; then
6748             disable ebp_available
6749             disable ebx_available
6750         fi
6751     fi
6752     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6753     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6754     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6755     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6756     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6757     # MSVC 2013 and newer can handle it fine.
6758     # If this declspec fails, force including stdlib.h before the restrict redefinition
6759     # happens in config.h.
6760     if [ $restrict_keyword != restrict ]; then
6761         test_cc <<EOF || add_cflags -FIstdlib.h
6762 __declspec($restrict_keyword) void *foo(int);
6763 EOF
6764     fi
6765     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6766     # Issue has been fixed in MSVC v19.00.24218.
6767     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6768         check_cflags -d2SSAOptimizer-
6769     # enable utf-8 source processing on VS2015 U2 and newer
6770     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6771         add_cflags -utf-8
6772 fi
6773
6774 for pfx in "" host_; do
6775     varname=${pfx%_}cc_type
6776     eval "type=\$$varname"
6777     if [ "$type" = "msvc" ]; then
6778         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6779 static inline int foo(int a) { return a; }
6780 EOF
6781     fi
6782 done
6783
6784 case $as_type in
6785     clang)
6786         add_asflags -Qunused-arguments
6787     ;;
6788 esac
6789
6790 case $ld_type in
6791     clang)
6792         check_ldflags -Qunused-arguments
6793     ;;
6794 esac
6795
6796 enable frame_thread_encoder
6797
6798 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6799
6800 check_deps $CONFIG_LIST       \
6801            $CONFIG_EXTRA      \
6802            $HAVE_LIST         \
6803            $ALL_COMPONENTS    \
6804
6805 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"
6806 enabled avresample && warn "Building with deprecated library libavresample"
6807
6808 case $target_os in
6809 haiku)
6810     disable memalign
6811     disable posix_memalign
6812     ;;
6813 *-dos|freedos|opendos)
6814     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6815         disable memalign
6816     fi
6817     ;;
6818 esac
6819
6820 flatten_extralibs(){
6821     nested_entries=
6822     list_name=$1
6823     eval list=\$${1}
6824     for entry in $list; do
6825         entry_copy=$entry
6826         resolve entry_copy
6827         flat_entries=
6828         for e in $entry_copy; do
6829             case $e in
6830                 *_extralibs) nested_entries="$nested_entries$e ";;
6831                           *) flat_entries="$flat_entries$e ";;
6832             esac
6833         done
6834         eval $entry="\$flat_entries"
6835     done
6836     append $list_name "$nested_entries"
6837
6838     resolve nested_entries
6839     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6840         flatten_extralibs $list_name
6841     fi
6842 }
6843
6844 flatten_extralibs_wrapper(){
6845     list_name=$1
6846     flatten_extralibs $list_name
6847     unique $list_name
6848     resolve $list_name
6849     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6850     eval printf \''%s'\' \""\$$list_name"\"
6851 }
6852
6853 for linkunit in $LIBRARY_LIST; do
6854     unset current_extralibs
6855     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6856     for comp in ${components}; do
6857         enabled $comp || continue
6858         comp_extralibs="${comp}_extralibs"
6859         append current_extralibs $comp_extralibs
6860     done
6861     eval prepend ${linkunit}_extralibs $current_extralibs
6862 done
6863
6864 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6865     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6866 done
6867
6868 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6869
6870 for thread in $THREADS_LIST; do
6871     if enabled $thread; then
6872         test -n "$thread_type" &&
6873             die "ERROR: Only one thread type must be selected." ||
6874             thread_type="$thread"
6875     fi
6876 done
6877
6878 if disabled stdatomic; then
6879     if enabled atomics_gcc; then
6880         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6881     elif enabled atomics_win32; then
6882         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6883     elif enabled atomics_suncc; then
6884         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6885     elif enabled pthreads; then
6886         add_compat atomics/pthread/stdatomic.o
6887         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6888     else
6889         enabled threads && die "Threading is enabled, but no atomics are available"
6890         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6891     fi
6892 fi
6893
6894 # Check if requested libraries were found.
6895 for lib in $AUTODETECT_LIBS; do
6896     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6897 done
6898
6899 enabled zlib && add_cppflags -DZLIB_CONST
6900
6901 # conditional library dependencies, in any order
6902 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6903 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6904 enabled afir_filter         && prepend avfilter_deps "avcodec"
6905 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6906 enabled aresample_filter    && prepend avfilter_deps "swresample"
6907 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6908 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6909 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6910 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6911 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6912 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6913 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6914 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6915 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6916 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6917 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6918 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6919 enabled pan_filter          && prepend avfilter_deps "swresample"
6920 enabled pp_filter           && prepend avfilter_deps "postproc"
6921 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6922 enabled resample_filter && prepend avfilter_deps "avresample"
6923 enabled sab_filter          && prepend avfilter_deps "swscale"
6924 enabled scale_filter    && prepend avfilter_deps "swscale"
6925 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6926 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6927 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6928 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6929 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6930 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6931 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6932 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6933 enabled spp_filter          && prepend avfilter_deps "avcodec"
6934 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6935 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6936 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6937 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6938
6939 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6940
6941 #FIXME
6942 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6943     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6944
6945 enabled opus_decoder    && prepend avcodec_deps "swresample"
6946
6947 # reorder the items at var $1 to align with the items order at var $2 .
6948 # die if an item at $1 is not at $2 .
6949 reorder_by(){
6950     eval rb_in=\$$1
6951     eval rb_ordered=\$$2
6952
6953     for rb in $rb_in; do
6954         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6955     done
6956
6957     rb_out=
6958     for rb in $rb_ordered; do
6959         is_in $rb $rb_in && rb_out="$rb_out$rb "
6960     done
6961     eval $1=\$rb_out
6962 }
6963
6964 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6965 # within a set of N items, N expansions are enough to expose a cycle.
6966 expand_deps(){
6967     unique ${1}_deps  # required for the early break test.
6968     for dummy in $LIBRARY_LIST; do  # N iteratios
6969         eval deps=\$${1}_deps
6970         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6971         unique ${1}_deps
6972         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6973     done
6974
6975     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6976     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6977 }
6978
6979 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6980 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6981
6982 map 'expand_deps $v' $LIBRARY_LIST
6983
6984 if test "$quiet" != "yes"; then
6985
6986 echo "install prefix            $prefix"
6987 echo "source path               $source_path"
6988 echo "C compiler                $cc"
6989 echo "C library                 $libc_type"
6990 if test "$host_cc" != "$cc"; then
6991     echo "host C compiler           $host_cc"
6992     echo "host C library            $host_libc_type"
6993 fi
6994 echo "ARCH                      $arch ($cpu)"
6995 if test "$build_suffix" != ""; then
6996     echo "build suffix              $build_suffix"
6997 fi
6998 if test "$progs_suffix" != ""; then
6999     echo "progs suffix              $progs_suffix"
7000 fi
7001 if test "$extra_version" != ""; then
7002     echo "version string suffix     $extra_version"
7003 fi
7004 echo "big-endian                ${bigendian-no}"
7005 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7006 if enabled x86; then
7007     echo "standalone assembly       ${x86asm-no}"
7008     echo "x86 assembler             ${x86asmexe}"
7009     echo "MMX enabled               ${mmx-no}"
7010     echo "MMXEXT enabled            ${mmxext-no}"
7011     echo "3DNow! enabled            ${amd3dnow-no}"
7012     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7013     echo "SSE enabled               ${sse-no}"
7014     echo "SSSE3 enabled             ${ssse3-no}"
7015     echo "AESNI enabled             ${aesni-no}"
7016     echo "AVX enabled               ${avx-no}"
7017     echo "AVX2 enabled              ${avx2-no}"
7018     echo "AVX-512 enabled           ${avx512-no}"
7019     echo "XOP enabled               ${xop-no}"
7020     echo "FMA3 enabled              ${fma3-no}"
7021     echo "FMA4 enabled              ${fma4-no}"
7022     echo "i686 features enabled     ${i686-no}"
7023     echo "CMOV is fast              ${fast_cmov-no}"
7024     echo "EBX available             ${ebx_available-no}"
7025     echo "EBP available             ${ebp_available-no}"
7026 fi
7027 if enabled aarch64; then
7028     echo "NEON enabled              ${neon-no}"
7029     echo "VFP enabled               ${vfp-no}"
7030 fi
7031 if enabled arm; then
7032     echo "ARMv5TE enabled           ${armv5te-no}"
7033     echo "ARMv6 enabled             ${armv6-no}"
7034     echo "ARMv6T2 enabled           ${armv6t2-no}"
7035     echo "VFP enabled               ${vfp-no}"
7036     echo "NEON enabled              ${neon-no}"
7037     echo "THUMB enabled             ${thumb-no}"
7038 fi
7039 if enabled mips; then
7040     echo "MIPS FPU enabled          ${mipsfpu-no}"
7041     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7042     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7043     echo "MIPS MSA enabled          ${msa-no}"
7044     echo "LOONGSON MMI enabled      ${mmi-no}"
7045 fi
7046 if enabled ppc; then
7047     echo "AltiVec enabled           ${altivec-no}"
7048     echo "VSX enabled               ${vsx-no}"
7049     echo "POWER8 enabled            ${power8-no}"
7050     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7051     echo "dcbzl available           ${dcbzl-no}"
7052 fi
7053 echo "debug symbols             ${debug-no}"
7054 echo "strip symbols             ${stripping-no}"
7055 echo "optimize for size         ${small-no}"
7056 echo "optimizations             ${optimizations-no}"
7057 echo "static                    ${static-no}"
7058 echo "shared                    ${shared-no}"
7059 echo "postprocessing support    ${postproc-no}"
7060 echo "network support           ${network-no}"
7061 echo "threading support         ${thread_type-no}"
7062 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7063 echo "texi2html enabled         ${texi2html-no}"
7064 echo "perl enabled              ${perl-no}"
7065 echo "pod2man enabled           ${pod2man-no}"
7066 echo "makeinfo enabled          ${makeinfo-no}"
7067 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7068 test -n "$random_seed" &&
7069     echo "random seed               ${random_seed}"
7070 echo
7071
7072 echo "External libraries:"
7073 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7074 echo
7075
7076 echo "External libraries providing hardware acceleration:"
7077 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7078 echo
7079
7080 echo "Libraries:"
7081 print_enabled '' $LIBRARY_LIST | print_in_columns
7082 echo
7083
7084 echo "Programs:"
7085 print_enabled '' $PROGRAM_LIST | print_in_columns
7086 echo
7087
7088 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7089     echo "Enabled ${type}s:"
7090     eval list=\$$(toupper $type)_LIST
7091     print_enabled '_*' $list | print_in_columns
7092     echo
7093 done
7094
7095 if test -n "$ignore_tests"; then
7096     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7097     echo "Ignored FATE tests:"
7098     echo $ignore_tests | print_in_columns
7099     echo
7100 fi
7101
7102 echo "License: $license"
7103
7104 fi # test "$quiet" != "yes"
7105
7106 if test -n "$WARNINGS"; then
7107     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7108     enabled fatal_warnings && exit 1
7109 fi
7110
7111 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7112
7113 esc(){
7114     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7115 }
7116
7117 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7118
7119 enabled stripping || strip="echo skipping strip"
7120 enabled stripping || striptype=""
7121
7122 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7123
7124 cat > ffbuild/config.mak <<EOF
7125 # Automatically generated by configure - do not modify!
7126 ifndef FFMPEG_CONFIG_MAK
7127 FFMPEG_CONFIG_MAK=1
7128 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7129 prefix=$prefix
7130 LIBDIR=\$(DESTDIR)$libdir
7131 SHLIBDIR=\$(DESTDIR)$shlibdir
7132 INCDIR=\$(DESTDIR)$incdir
7133 BINDIR=\$(DESTDIR)$bindir
7134 DATADIR=\$(DESTDIR)$datadir
7135 DOCDIR=\$(DESTDIR)$docdir
7136 MANDIR=\$(DESTDIR)$mandir
7137 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7138 INSTALL_NAME_DIR=$install_name_dir
7139 SRC_PATH=$source_path
7140 SRC_LINK=$source_link
7141 ifndef MAIN_MAKEFILE
7142 SRC_PATH:=\$(SRC_PATH:.%=..%)
7143 endif
7144 CC_IDENT=$cc_ident
7145 ARCH=$arch
7146 INTRINSICS=$intrinsics
7147 EXTERN_PREFIX=$extern_prefix
7148 CC=$cc
7149 CXX=$cxx
7150 AS=$as
7151 OBJCC=$objcc
7152 LD=$ld
7153 DEPCC=$dep_cc
7154 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7155 DEPAS=$as
7156 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7157 X86ASM=$x86asmexe
7158 DEPX86ASM=$x86asmexe
7159 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7160 AR=$ar
7161 ARFLAGS=$arflags
7162 AR_O=$ar_o
7163 AR_CMD=$ar
7164 NM_CMD=$nm
7165 RANLIB=$ranlib
7166 STRIP=$strip
7167 STRIPTYPE=$striptype
7168 NVCC=$nvcc
7169 CP=cp -p
7170 LN_S=$ln_s
7171 CPPFLAGS=$CPPFLAGS
7172 CFLAGS=$CFLAGS
7173 CXXFLAGS=$CXXFLAGS
7174 OBJCFLAGS=$OBJCFLAGS
7175 ASFLAGS=$ASFLAGS
7176 NVCCFLAGS=$nvccflags
7177 AS_C=$AS_C
7178 AS_O=$AS_O
7179 OBJCC_C=$OBJCC_C
7180 OBJCC_E=$OBJCC_E
7181 OBJCC_O=$OBJCC_O
7182 CC_C=$CC_C
7183 CC_E=$CC_E
7184 CC_O=$CC_O
7185 CXX_C=$CXX_C
7186 CXX_O=$CXX_O
7187 NVCC_C=$NVCC_C
7188 NVCC_O=$NVCC_O
7189 LD_O=$LD_O
7190 X86ASM_O=$X86ASM_O
7191 LD_LIB=$LD_LIB
7192 LD_PATH=$LD_PATH
7193 DLLTOOL=$dlltool
7194 WINDRES=$windres
7195 DEPWINDRES=$dep_cc
7196 DOXYGEN=$doxygen
7197 LDFLAGS=$LDFLAGS
7198 LDEXEFLAGS=$LDEXEFLAGS
7199 LDSOFLAGS=$LDSOFLAGS
7200 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7201 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7202 X86ASMFLAGS=$X86ASMFLAGS
7203 BUILDSUF=$build_suffix
7204 PROGSSUF=$progs_suffix
7205 FULLNAME=$FULLNAME
7206 LIBPREF=$LIBPREF
7207 LIBSUF=$LIBSUF
7208 LIBNAME=$LIBNAME
7209 SLIBPREF=$SLIBPREF
7210 SLIBSUF=$SLIBSUF
7211 EXESUF=$EXESUF
7212 EXTRA_VERSION=$extra_version
7213 CCDEP=$CCDEP
7214 CXXDEP=$CXXDEP
7215 CCDEP_FLAGS=$CCDEP_FLAGS
7216 ASDEP=$ASDEP
7217 ASDEP_FLAGS=$ASDEP_FLAGS
7218 X86ASMDEP=$X86ASMDEP
7219 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7220 CC_DEPFLAGS=$CC_DEPFLAGS
7221 AS_DEPFLAGS=$AS_DEPFLAGS
7222 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7223 HOSTCC=$host_cc
7224 HOSTLD=$host_ld
7225 HOSTCFLAGS=$host_cflags
7226 HOSTCPPFLAGS=$host_cppflags
7227 HOSTEXESUF=$HOSTEXESUF
7228 HOSTLDFLAGS=$host_ldflags
7229 HOSTEXTRALIBS=$host_extralibs
7230 DEPHOSTCC=$host_cc
7231 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7232 HOSTCCDEP=$HOSTCCDEP
7233 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7234 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7235 HOSTCC_C=$HOSTCC_C
7236 HOSTCC_O=$HOSTCC_O
7237 HOSTLD_O=$HOSTLD_O
7238 TARGET_EXEC=$target_exec $target_exec_args
7239 TARGET_PATH=$target_path
7240 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7241 CFLAGS-ffplay=${sdl2_cflags}
7242 CFLAGS_HEADERS=$CFLAGS_HEADERS
7243 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7244 EXTRALIBS=$extralibs
7245 COMPAT_OBJS=$compat_objs
7246 INSTALL=$install
7247 LIBTARGET=${LIBTARGET}
7248 SLIBNAME=${SLIBNAME}
7249 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7250 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7251 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7252 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7253 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7254 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7255 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7256 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7257 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7258 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7259 NOREDZONE_FLAGS=$noredzone_flags
7260 LIBFUZZER_PATH=$libfuzzer_path
7261 IGNORE_TESTS=$ignore_tests
7262 EOF
7263
7264 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7265
7266 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7267     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7268 done
7269
7270 cat > $TMPH <<EOF
7271 /* Automatically generated by configure - do not modify! */
7272 #ifndef FFMPEG_CONFIG_H
7273 #define FFMPEG_CONFIG_H
7274 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7275 #define FFMPEG_LICENSE "$(c_escape $license)"
7276 #define CONFIG_THIS_YEAR 2019
7277 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7278 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7279 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7280 #define av_restrict $restrict_keyword
7281 #define EXTERN_PREFIX "${extern_prefix}"
7282 #define EXTERN_ASM ${extern_prefix}
7283 #define BUILDSUF "$build_suffix"
7284 #define SLIBSUF "$SLIBSUF"
7285 #define HAVE_MMX2 HAVE_MMXEXT
7286 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7287 EOF
7288
7289 test -n "$assert_level" &&
7290     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7291
7292 test -n "$malloc_prefix" &&
7293     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7294
7295 if enabled x86asm; then
7296     append config_files $TMPASM
7297     cat > $TMPASM <<EOF
7298 ; Automatically generated by configure - do not modify!
7299 EOF
7300 fi
7301
7302 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7303
7304
7305 mkdir -p doc
7306 mkdir -p tests
7307 mkdir -p tests/api
7308 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7309
7310 print_config ARCH_   "$config_files" $ARCH_LIST
7311 print_config HAVE_   "$config_files" $HAVE_LIST
7312 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7313                                      $CONFIG_EXTRA      \
7314                                      $ALL_COMPONENTS    \
7315
7316 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7317 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7318
7319 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7320 cp_if_changed $TMPH config.h
7321 touch ffbuild/.config
7322
7323 enabled x86asm && cp_if_changed $TMPASM config.asm
7324
7325 cat > $TMPH <<EOF
7326 /* Generated by ffmpeg configure */
7327 #ifndef AVUTIL_AVCONFIG_H
7328 #define AVUTIL_AVCONFIG_H
7329 EOF
7330
7331 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7332
7333 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7334
7335 cp_if_changed $TMPH libavutil/avconfig.h
7336
7337 # full_filter_name_foo=vf_foo
7338 # full_filter_name_bar=asrc_bar
7339 # ...
7340 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7341
7342 # generate the lists of enabled components
7343 print_enabled_components(){
7344     file=$1
7345     struct_name=$2
7346     name=$3
7347     shift 3
7348     echo "static const $struct_name * const $name[] = {" > $TMPH
7349     for c in $*; do
7350         if enabled $c; then
7351             case $name in
7352                 filter_list)
7353                     eval c=\$full_filter_name_${c%_filter}
7354                 ;;
7355                 indev_list)
7356                     c=${c%_indev}_demuxer
7357                 ;;
7358                 outdev_list)
7359                     c=${c%_outdev}_muxer
7360                 ;;
7361             esac
7362             printf "    &ff_%s,\n" $c >> $TMPH
7363         fi
7364     done
7365     if [ "$name" = "filter_list" ]; then
7366         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7367             printf "    &ff_%s,\n" $c >> $TMPH
7368         done
7369     fi
7370     echo "    NULL };" >> $TMPH
7371     cp_if_changed $TMPH $file
7372 }
7373
7374 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7375 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7376 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7377 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7378 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7379 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7380 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7381 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7382 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7383
7384 # Settings for pkg-config files
7385
7386 cat > $TMPH <<EOF
7387 # Automatically generated by configure - do not modify!
7388 shared=$shared
7389 build_suffix=$build_suffix
7390 prefix=$prefix
7391 libdir=$libdir
7392 incdir=$incdir
7393 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7394 source_path=${source_path}
7395 LIBPREF=${LIBPREF}
7396 LIBSUF=${LIBSUF}
7397 extralibs_avutil="$avutil_extralibs"
7398 extralibs_avcodec="$avcodec_extralibs"
7399 extralibs_avformat="$avformat_extralibs"
7400 extralibs_avdevice="$avdevice_extralibs"
7401 extralibs_avfilter="$avfilter_extralibs"
7402 extralibs_avresample="$avresample_extralibs"
7403 extralibs_postproc="$postproc_extralibs"
7404 extralibs_swscale="$swscale_extralibs"
7405 extralibs_swresample="$swresample_extralibs"
7406 EOF
7407
7408 for lib in $LIBRARY_LIST; do
7409     lib_deps="$(eval echo \$${lib}_deps)"
7410     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7411 done
7412
7413 cp_if_changed $TMPH ffbuild/config.sh