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 unsharp_opencl_filter_deps="opencl"
3487 uspp_filter_deps="gpl avcodec"
3488 vaguedenoiser_filter_deps="gpl"
3489 vidstabdetect_filter_deps="libvidstab"
3490 vidstabtransform_filter_deps="libvidstab"
3491 libvmaf_filter_deps="libvmaf pthreads"
3492 zmq_filter_deps="libzmq"
3493 zoompan_filter_deps="swscale"
3494 zscale_filter_deps="libzimg const_nan"
3495 scale_vaapi_filter_deps="vaapi"
3496 vpp_qsv_filter_deps="libmfx"
3497 vpp_qsv_filter_select="qsvvpp"
3498 yadif_cuda_filter_deps="cuda_sdk"
3499
3500 # examples
3501 avio_dir_cmd_deps="avformat avutil"
3502 avio_reading_deps="avformat avcodec avutil"
3503 decode_audio_example_deps="avcodec avutil"
3504 decode_video_example_deps="avcodec avutil"
3505 demuxing_decoding_example_deps="avcodec avformat avutil"
3506 encode_audio_example_deps="avcodec avutil"
3507 encode_video_example_deps="avcodec avutil"
3508 extract_mvs_example_deps="avcodec avformat avutil"
3509 filter_audio_example_deps="avfilter avutil"
3510 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3511 filtering_video_example_deps="avfilter avcodec avformat avutil"
3512 http_multiclient_example_deps="avformat avutil fork"
3513 hw_decode_example_deps="avcodec avformat avutil"
3514 metadata_example_deps="avformat avutil"
3515 muxing_example_deps="avcodec avformat avutil swscale"
3516 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3517 remuxing_example_deps="avcodec avformat avutil"
3518 resampling_audio_example_deps="avutil swresample"
3519 scaling_video_example_deps="avutil swscale"
3520 transcode_aac_example_deps="avcodec avformat swresample"
3521 transcoding_example_deps="avfilter avcodec avformat avutil"
3522 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3523 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3524
3525 # EXTRALIBS_LIST
3526 cpu_init_extralibs="pthreads_extralibs"
3527 cws2fws_extralibs="zlib_extralibs"
3528
3529 # libraries, in any order
3530 avcodec_deps="avutil"
3531 avcodec_suggest="libm"
3532 avcodec_select="null_bsf"
3533 avdevice_deps="avformat avcodec avutil"
3534 avdevice_suggest="libm"
3535 avfilter_deps="avutil"
3536 avfilter_suggest="libm"
3537 avformat_deps="avcodec avutil"
3538 avformat_suggest="libm network zlib"
3539 avresample_deps="avutil"
3540 avresample_suggest="libm"
3541 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3542 postproc_deps="avutil gpl"
3543 postproc_suggest="libm"
3544 swresample_deps="avutil"
3545 swresample_suggest="libm libsoxr"
3546 swscale_deps="avutil"
3547 swscale_suggest="libm"
3548
3549 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3550 avfilter_extralibs="pthreads_extralibs"
3551 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3552
3553 # programs
3554 ffmpeg_deps="avcodec avfilter avformat"
3555 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3556                null_filter
3557                trim_filter"
3558 ffmpeg_suggest="ole32 psapi shell32"
3559 ffplay_deps="avcodec avformat swscale swresample sdl2"
3560 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3561 ffplay_suggest="shell32"
3562 ffprobe_deps="avcodec avformat"
3563 ffprobe_suggest="shell32"
3564
3565 # documentation
3566 podpages_deps="perl"
3567 manpages_deps="perl pod2man"
3568 htmlpages_deps="perl"
3569 htmlpages_deps_any="makeinfo_html texi2html"
3570 txtpages_deps="perl makeinfo"
3571 doc_deps_any="manpages htmlpages podpages txtpages"
3572
3573 # default parameters
3574
3575 logfile="ffbuild/config.log"
3576
3577 # installation paths
3578 prefix_default="/usr/local"
3579 bindir_default='${prefix}/bin'
3580 datadir_default='${prefix}/share/ffmpeg'
3581 docdir_default='${prefix}/share/doc/ffmpeg'
3582 incdir_default='${prefix}/include'
3583 libdir_default='${prefix}/lib'
3584 mandir_default='${prefix}/share/man'
3585
3586 # toolchain
3587 ar_default="ar"
3588 cc_default="gcc"
3589 cxx_default="g++"
3590 host_cc_default="gcc"
3591 doxygen_default="doxygen"
3592 install="install"
3593 ln_s_default="ln -s -f"
3594 nm_default="nm -g"
3595 pkg_config_default=pkg-config
3596 ranlib_default="ranlib"
3597 strip_default="strip"
3598 version_script='--version-script'
3599 objformat="elf32"
3600 x86asmexe_default="nasm"
3601 windres_default="windres"
3602 nvcc_default="nvcc"
3603 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3604 striptype="direct"
3605
3606 # OS
3607 target_os_default=$(tolower $(uname -s))
3608 host_os=$target_os_default
3609
3610 # machine
3611 if test "$target_os_default" = aix; then
3612     arch_default=$(uname -p)
3613     strip_default="strip -X32_64"
3614     nm_default="nm -g -X32_64"
3615 else
3616     arch_default=$(uname -m)
3617 fi
3618 cpu="generic"
3619 intrinsics="none"
3620
3621 # configurable options
3622 enable $PROGRAM_LIST
3623 enable $DOCUMENT_LIST
3624 enable $EXAMPLE_LIST
3625 enable $(filter_out avresample $LIBRARY_LIST)
3626 enable stripping
3627
3628 enable asm
3629 enable debug
3630 enable doc
3631 enable faan faandct faanidct
3632 enable optimizations
3633 enable runtime_cpudetect
3634 enable safe_bitstream_reader
3635 enable static
3636 enable swscale_alpha
3637 enable valgrind_backtrace
3638
3639 sws_max_filter_size_default=256
3640 set_default sws_max_filter_size
3641
3642 # internal components are enabled by default
3643 enable $EXTRALIBS_LIST
3644
3645 # Avoid external, non-system, libraries getting enabled by dependency resolution
3646 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3647
3648 # build settings
3649 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3650 LIBPREF="lib"
3651 LIBSUF=".a"
3652 FULLNAME='$(NAME)$(BUILDSUF)'
3653 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3654 SLIBPREF="lib"
3655 SLIBSUF=".so"
3656 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3657 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3658 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3659 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3660 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3661 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3662 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3663
3664 asflags_filter=echo
3665 cflags_filter=echo
3666 ldflags_filter=echo
3667
3668 AS_C='-c'
3669 AS_O='-o $@'
3670 CC_C='-c'
3671 CC_E='-E -o $@'
3672 CC_O='-o $@'
3673 CXX_C='-c'
3674 CXX_O='-o $@'
3675 OBJCC_C='-c'
3676 OBJCC_E='-E -o $@'
3677 OBJCC_O='-o $@'
3678 X86ASM_O='-o $@'
3679 LD_O='-o $@'
3680 LD_LIB='-l%'
3681 LD_PATH='-L'
3682 HOSTCC_C='-c'
3683 HOSTCC_E='-E -o $@'
3684 HOSTCC_O='-o $@'
3685 HOSTLD_O='-o $@'
3686 NVCC_C='-c'
3687 NVCC_O='-o $@'
3688
3689 host_extralibs='-lm'
3690 host_cflags_filter=echo
3691 host_ldflags_filter=echo
3692
3693 target_path='$(CURDIR)'
3694
3695 # since the object filename is not given with the -MM flag, the compiler
3696 # is only able to print the basename, and we must add the path ourselves
3697 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3698 DEPFLAGS='-MM'
3699
3700 mkdir -p ffbuild
3701
3702 # find source path
3703 if test -f configure; then
3704     source_path=.
3705 else
3706     source_path=$(cd $(dirname "$0"); pwd)
3707     case "$source_path" in
3708         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3709     esac
3710     test -e "$source_path/config.h" &&
3711         die "Out of tree builds are impossible with config.h in source dir."
3712 fi
3713
3714 for v in "$@"; do
3715     r=${v#*=}
3716     l=${v%"$r"}
3717     r=$(sh_quote "$r")
3718     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3719 done
3720
3721 find_things_extern(){
3722     thing=$1
3723     pattern=$2
3724     file=$source_path/$3
3725     out=${4:-$thing}
3726     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3727 }
3728
3729 find_filters_extern(){
3730     file=$source_path/$1
3731     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3732 }
3733
3734 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3735 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3736 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3737 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3738 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3739 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3740 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3741 CODEC_LIST="
3742     $ENCODER_LIST
3743     $DECODER_LIST
3744 "
3745 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3746 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3747 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3748 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3749
3750 AVCODEC_COMPONENTS_LIST="
3751     $BSF_LIST
3752     $DECODER_LIST
3753     $ENCODER_LIST
3754     $HWACCEL_LIST
3755     $PARSER_LIST
3756 "
3757
3758 AVDEVICE_COMPONENTS_LIST="
3759     $INDEV_LIST
3760     $OUTDEV_LIST
3761 "
3762
3763 AVFILTER_COMPONENTS_LIST="
3764     $FILTER_LIST
3765 "
3766
3767 AVFORMAT_COMPONENTS_LIST="
3768     $DEMUXER_LIST
3769     $MUXER_LIST
3770     $PROTOCOL_LIST
3771 "
3772
3773 ALL_COMPONENTS="
3774     $AVCODEC_COMPONENTS_LIST
3775     $AVDEVICE_COMPONENTS_LIST
3776     $AVFILTER_COMPONENTS_LIST
3777     $AVFORMAT_COMPONENTS_LIST
3778 "
3779
3780 for n in $COMPONENT_LIST; do
3781     v=$(toupper ${n%s})_LIST
3782     eval enable \$$v
3783     eval ${n}_if_any="\$$v"
3784 done
3785
3786 enable $ARCH_EXT_LIST
3787
3788 die_unknown(){
3789     echo "Unknown option \"$1\"."
3790     echo "See $0 --help for available options."
3791     exit 1
3792 }
3793
3794 print_in_columns() {
3795     cols=$(expr $ncols / 24)
3796     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3797 }
3798
3799 show_list() {
3800     suffix=_$1
3801     shift
3802     echo $* | sed s/$suffix//g | print_in_columns
3803     exit 0
3804 }
3805
3806 rand_list(){
3807     IFS=', '
3808     set -- $*
3809     unset IFS
3810     for thing; do
3811         comp=${thing%:*}
3812         prob=${thing#$comp}
3813         prob=${prob#:}
3814         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3815         echo "prob ${prob:-0.5}"
3816         printf '%s\n' $comp
3817     done
3818 }
3819
3820 do_random(){
3821     action=$1
3822     shift
3823     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3824     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3825 }
3826
3827 for opt do
3828     optval="${opt#*=}"
3829     case "$opt" in
3830         --extra-ldflags=*)
3831             add_ldflags $optval
3832         ;;
3833         --extra-ldexeflags=*)
3834             add_ldexeflags $optval
3835         ;;
3836         --extra-ldsoflags=*)
3837             add_ldsoflags $optval
3838         ;;
3839         --extra-ldlibflags=*)
3840             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3841                  "removed in the future. Use --extra-ldsoflags instead."
3842             add_ldsoflags $optval
3843         ;;
3844         --extra-libs=*)
3845             add_extralibs $optval
3846         ;;
3847         --disable-devices)
3848             disable $INDEV_LIST $OUTDEV_LIST
3849         ;;
3850         --enable-debug=*)
3851             debuglevel="$optval"
3852         ;;
3853         --disable-programs)
3854             disable $PROGRAM_LIST
3855         ;;
3856         --disable-everything)
3857             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3858         ;;
3859         --disable-all)
3860             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3861             disable $LIBRARY_LIST $PROGRAM_LIST doc
3862             enable avutil
3863         ;;
3864         --enable-random|--disable-random)
3865             action=${opt%%-random}
3866             do_random ${action#--} $COMPONENT_LIST
3867         ;;
3868         --enable-random=*|--disable-random=*)
3869             action=${opt%%-random=*}
3870             do_random ${action#--} $optval
3871         ;;
3872         --enable-sdl)
3873             enable sdl2
3874         ;;
3875         --enable-*=*|--disable-*=*)
3876             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3877             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3878             eval list=\$$(toupper $thing)_LIST
3879             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3880             list=$(filter "$name" $list)
3881             [ "$list" = "" ] && warn "Option $opt did not match anything"
3882             $action $list
3883         ;;
3884         --enable-yasm|--disable-yasm)
3885             warn "The ${opt} option is only provided for compatibility and will be\n"\
3886                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3887             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3888         ;;
3889         --yasmexe=*)
3890             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3891                  "removed in the future. Use --x86asmexe instead."
3892             x86asmexe="$optval"
3893         ;;
3894         --enable-?*|--disable-?*)
3895             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3896             if is_in $option $COMPONENT_LIST; then
3897                 test $action = disable && action=unset
3898                 eval $action \$$(toupper ${option%s})_LIST
3899             elif is_in $option $CMDLINE_SELECT; then
3900                 $action $option
3901             else
3902                 die_unknown $opt
3903             fi
3904         ;;
3905         --list-*)
3906             NAME="${opt#--list-}"
3907             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3908             NAME=${NAME%s}
3909             eval show_list $NAME \$$(toupper $NAME)_LIST
3910         ;;
3911         --help|-h) show_help
3912         ;;
3913         --quiet|-q) quiet=yes
3914         ;;
3915         --fatal-warnings) enable fatal_warnings
3916         ;;
3917         --libfuzzer=*)
3918             libfuzzer_path="$optval"
3919         ;;
3920         *)
3921             optname="${opt%%=*}"
3922             optname="${optname#--}"
3923             optname=$(echo "$optname" | sed 's/-/_/g')
3924             if is_in $optname $CMDLINE_SET; then
3925                 eval $optname='$optval'
3926             elif is_in $optname $CMDLINE_APPEND; then
3927                 append $optname "$optval"
3928             else
3929                 die_unknown $opt
3930             fi
3931         ;;
3932     esac
3933 done
3934
3935 for e in $env; do
3936     eval "export $e"
3937 done
3938
3939 if disabled autodetect; then
3940
3941     # Unless iconv is explicitely disabled by the user, we still want to probe
3942     # for the iconv from the libc.
3943     disabled iconv || enable libc_iconv
3944
3945     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3946     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3947 fi
3948 # Mark specifically enabled, but normally autodetected libraries as requested.
3949 for lib in $AUTODETECT_LIBS; do
3950     enabled $lib && request $lib
3951 done
3952 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3953 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3954 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3955
3956 disabled logging && logfile=/dev/null
3957
3958 # command line configuration sanity checks
3959
3960 # we need to build at least one lib type
3961 if ! enabled_any static shared; then
3962     cat <<EOF
3963 At least one library type must be built.
3964 Specify --enable-static to build the static libraries or --enable-shared to
3965 build the shared libraries as well. To only build the shared libraries specify
3966 --disable-static in addition to --enable-shared.
3967 EOF
3968     exit 1
3969 fi
3970
3971 die_license_disabled() {
3972     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3973 }
3974
3975 die_license_disabled_gpl() {
3976     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3977 }
3978
3979 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3980 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3981
3982 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3983 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3984
3985 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3986
3987 if enabled nonfree; then
3988     license="nonfree and unredistributable"
3989 elif enabled gplv3; then
3990     license="GPL version 3 or later"
3991 elif enabled lgplv3; then
3992     license="LGPL version 3 or later"
3993 elif enabled gpl; then
3994     license="GPL version 2 or later"
3995 else
3996     license="LGPL version 2.1 or later"
3997 fi
3998
3999 enabled_all gnutls openssl &&
4000     die "GnuTLS and OpenSSL must not be enabled at the same time."
4001
4002 enabled_all gnutls mbedtls &&
4003     die "GnuTLS and mbedTLS must not be enabled at the same time."
4004
4005 enabled_all openssl mbedtls &&
4006     die "OpenSSL and mbedTLS must not be enabled at the same time."
4007
4008 # Disable all the library-specific components if the library itself
4009 # is disabled, see AVCODEC_LIST and following _LIST variables.
4010
4011 disable_components(){
4012     disabled ${1} && disable $(
4013         eval components="\$$(toupper ${1})_COMPONENTS"
4014         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4015     )
4016 }
4017
4018 map 'disable_components $v' $LIBRARY_LIST
4019
4020 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4021 set >> $logfile
4022
4023 test -n "$valgrind" && toolchain="valgrind-memcheck"
4024
4025 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4026     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4027     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4028 }
4029
4030 case "$toolchain" in
4031     *-asan)
4032         cc_default="${toolchain%-asan}"
4033         add_cflags  -fsanitize=address
4034         add_ldflags -fsanitize=address
4035     ;;
4036     *-msan)
4037         cc_default="${toolchain%-msan}"
4038         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4039         add_ldflags -fsanitize=memory
4040     ;;
4041     *-tsan)
4042         cc_default="${toolchain%-tsan}"
4043         add_cflags  -fsanitize=thread
4044         add_ldflags -fsanitize=thread
4045         case "$toolchain" in
4046             gcc-tsan)
4047                 add_cflags  -fPIC
4048                 add_ldflags -fPIC
4049                 ;;
4050         esac
4051     ;;
4052     *-usan)
4053         cc_default="${toolchain%-usan}"
4054         add_cflags  -fsanitize=undefined
4055         add_ldflags -fsanitize=undefined
4056     ;;
4057     valgrind-*)
4058         target_exec_default="valgrind"
4059         case "$toolchain" in
4060             valgrind-massif)
4061                 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"
4062                 ;;
4063             valgrind-memcheck)
4064                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4065                 ;;
4066         esac
4067     ;;
4068     msvc)
4069         # Check whether the current MSVC version needs the C99 converter.
4070         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4071         # support enough of C99 to build ffmpeg. Default to the new
4072         # behaviour if the regexp was unable to match anything, since this
4073         # successfully parses the version number of existing supported
4074         # versions that require the converter (MSVC 2010 and 2012).
4075         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4076         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4077             cc_default="cl"
4078             cxx_default="cl"
4079         else
4080             die "Unsupported MSVC version (2013 or newer required)"
4081         fi
4082         ld_default="$source_path/compat/windows/mslink"
4083         nm_default="dumpbin -symbols"
4084         ar_default="lib"
4085         case "$arch" in
4086         aarch64|arm64)
4087             as_default="armasm64"
4088             ;;
4089         arm*)
4090             as_default="armasm"
4091             ;;
4092         esac
4093         target_os_default="win32"
4094         # Use a relative path for TMPDIR. This makes sure all the
4095         # ffconf temp files are written with a relative path, avoiding
4096         # issues with msys/win32 path conversion for MSVC parameters
4097         # such as -Fo<file> or -out:<file>.
4098         TMPDIR=.
4099     ;;
4100     icl)
4101         cc_default="icl"
4102         ld_default="xilink"
4103         nm_default="dumpbin -symbols"
4104         ar_default="xilib"
4105         target_os_default="win32"
4106         TMPDIR=.
4107     ;;
4108     gcov)
4109         add_cflags  -fprofile-arcs -ftest-coverage
4110         add_ldflags -fprofile-arcs -ftest-coverage
4111     ;;
4112     llvm-cov)
4113         add_cflags -fprofile-arcs -ftest-coverage
4114         add_ldflags --coverage
4115     ;;
4116     hardened)
4117         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4118         add_cflags   -fno-strict-overflow -fstack-protector-all
4119         add_ldflags  -Wl,-z,relro -Wl,-z,now
4120         add_cflags   -fPIE
4121         add_ldexeflags -fPIE -pie
4122     ;;
4123     ?*)
4124         die "Unknown toolchain $toolchain"
4125     ;;
4126 esac
4127
4128 if test -n "$cross_prefix"; then
4129     test -n "$arch" && test -n "$target_os" ||
4130         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4131     enable cross_compile
4132 fi
4133
4134 set_default target_os
4135 if test "$target_os" = android; then
4136     cc_default="clang"
4137 fi
4138
4139 ar_default="${cross_prefix}${ar_default}"
4140 cc_default="${cross_prefix}${cc_default}"
4141 cxx_default="${cross_prefix}${cxx_default}"
4142 nm_default="${cross_prefix}${nm_default}"
4143 pkg_config_default="${cross_prefix}${pkg_config_default}"
4144 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4145     ranlib_default="${cross_prefix}${ranlib_default} -D"
4146 else
4147     ranlib_default="${cross_prefix}${ranlib_default}"
4148 fi
4149 strip_default="${cross_prefix}${strip_default}"
4150 windres_default="${cross_prefix}${windres_default}"
4151
4152 sysinclude_default="${sysroot}/usr/include"
4153
4154 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4155     target_exec x86asmexe nvcc
4156 enabled cross_compile || host_cc_default=$cc
4157 set_default host_cc
4158
4159 pkg_config_fail_message=""
4160 if ! $pkg_config --version >/dev/null 2>&1; then
4161     warn "$pkg_config not found, library detection may fail."
4162     pkg_config=false
4163 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4164     pkg_config_fail_message="
4165 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4166 fi
4167
4168 if test $doxygen != $doxygen_default && \
4169   ! $doxygen --version >/dev/null 2>&1; then
4170     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4171 fi
4172
4173 exesuf() {
4174     case $1 in
4175         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4176     esac
4177 }
4178
4179 EXESUF=$(exesuf $target_os)
4180 HOSTEXESUF=$(exesuf $host_os)
4181
4182 # set temporary file name
4183 : ${TMPDIR:=$TEMPDIR}
4184 : ${TMPDIR:=$TMP}
4185 : ${TMPDIR:=/tmp}
4186
4187 if [ -n "$tempprefix" ] ; then
4188     mktemp(){
4189         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4190         echo "$tmpname"
4191         mkdir "$tmpname"
4192     }
4193 elif ! test_cmd mktemp -u XXXXXX; then
4194     # simple replacement for missing mktemp
4195     # NOT SAFE FOR GENERAL USE
4196     mktemp(){
4197         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4198         echo "$tmpname"
4199         mkdir "$tmpname"
4200     }
4201 fi
4202
4203 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4204     die "Unable to create temporary directory in $TMPDIR."
4205
4206 tmpfile(){
4207     tmp="${FFTMPDIR}/test"$2
4208     (set -C; exec > $tmp) 2> /dev/null ||
4209         die "Unable to create temporary file in $FFTMPDIR."
4210     eval $1=$tmp
4211 }
4212
4213 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4214 trap 'exit 2' INT
4215
4216 tmpfile TMPASM .asm
4217 tmpfile TMPC   .c
4218 tmpfile TMPCPP .cpp
4219 tmpfile TMPE   $EXESUF
4220 tmpfile TMPH   .h
4221 tmpfile TMPM   .m
4222 tmpfile TMPO   .o
4223 tmpfile TMPS   .S
4224 tmpfile TMPSH  .sh
4225 tmpfile TMPV   .ver
4226
4227 unset -f mktemp
4228
4229 chmod +x $TMPE
4230
4231 # make sure we can execute files in $TMPDIR
4232 cat > $TMPSH 2>> $logfile <<EOF
4233 #! /bin/sh
4234 EOF
4235 chmod +x $TMPSH >> $logfile 2>&1
4236 if ! $TMPSH >> $logfile 2>&1; then
4237     cat <<EOF
4238 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4239 variable to another directory and make sure that it is not mounted noexec.
4240 EOF
4241     die "Sanity test failed."
4242 fi
4243
4244 armasm_flags(){
4245     for flag; do
4246         case $flag in
4247             # Filter out MSVC cl.exe options from cflags that shouldn't
4248             # be passed to gas-preprocessor
4249             -M[TD]*)                                            ;;
4250             *)                  echo $flag                      ;;
4251         esac
4252    done
4253 }
4254
4255 cparser_flags(){
4256     for flag; do
4257         case $flag in
4258             -Wno-switch)             echo -Wno-switch-enum ;;
4259             -Wno-format-zero-length) ;;
4260             -Wdisabled-optimization) ;;
4261             -Wno-pointer-sign)       echo -Wno-other ;;
4262             *)                       echo $flag ;;
4263         esac
4264     done
4265 }
4266
4267 msvc_common_flags(){
4268     for flag; do
4269         case $flag in
4270             # In addition to specifying certain flags under the compiler
4271             # specific filters, they must be specified here as well or else the
4272             # generic catch all at the bottom will print the original flag.
4273             -Wall)                ;;
4274             -Wextra)              ;;
4275             -std=c99)             ;;
4276             # Common flags
4277             -fomit-frame-pointer) ;;
4278             -g)                   echo -Z7 ;;
4279             -fno-math-errno)      ;;
4280             -fno-common)          ;;
4281             -fno-signed-zeros)    ;;
4282             -fPIC)                ;;
4283             -mthumb)              ;;
4284             -march=*)             ;;
4285             -lz)                  echo zlib.lib ;;
4286             -lx264)               echo libx264.lib ;;
4287             -lstdc++)             ;;
4288             -l*)                  echo ${flag#-l}.lib ;;
4289             -LARGEADDRESSAWARE)   echo $flag ;;
4290             -L*)                  echo -libpath:${flag#-L} ;;
4291             *)                    echo $flag ;;
4292         esac
4293     done
4294 }
4295
4296 msvc_flags(){
4297     msvc_common_flags "$@"
4298     for flag; do
4299         case $flag in
4300             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4301                                        -wd4554 ;;
4302             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4303                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4304                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4305                                        -wd4307 \
4306                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4307         esac
4308     done
4309 }
4310
4311 icl_flags(){
4312     msvc_common_flags "$@"
4313     for flag; do
4314         case $flag in
4315             # Despite what Intel's documentation says -Wall, which is supported
4316             # on Windows, does enable remarks so disable them here.
4317             -Wall)                echo $flag -Qdiag-disable:remark ;;
4318             -std=c99)             echo -Qstd=c99 ;;
4319             -flto)                echo -ipo ;;
4320         esac
4321     done
4322 }
4323
4324 icc_flags(){
4325     for flag; do
4326         case $flag in
4327             -flto)                echo -ipo ;;
4328             *)                    echo $flag ;;
4329         esac
4330     done
4331 }
4332
4333 suncc_flags(){
4334     for flag; do
4335         case $flag in
4336             -march=*|-mcpu=*)
4337                 case "${flag#*=}" in
4338                     native)                   echo -xtarget=native       ;;
4339                     v9|niagara)               echo -xarch=sparc          ;;
4340                     ultrasparc)               echo -xarch=sparcvis       ;;
4341                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4342                     i586|pentium)             echo -xchip=pentium        ;;
4343                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4344                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4345                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4346                     pentium4*)          echo -xtarget=pentium4           ;;
4347                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4348                     *-sse3)             echo -xarch=sse3                 ;;
4349                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4350                     bonnell)                   echo -xarch=ssse3         ;;
4351                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4352                     westmere)                  echo -xtarget=westmere    ;;
4353                     silvermont)                echo -xarch=sse4_2        ;;
4354                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4355                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4356                                                echo -xarch=avx           ;;
4357                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4358                     btver1)                    echo -xarch=amdsse4a      ;;
4359                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4360                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4361                     k8|opteron|athlon64|athlon-fx)
4362                                                echo -xarch=sse2a         ;;
4363                     athlon*)                   echo -xarch=pentium_proa  ;;
4364                 esac
4365                 ;;
4366             -std=c99)             echo -xc99              ;;
4367             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4368             -fPIC)                echo -KPIC -xcode=pic32 ;;
4369             -W*,*)                echo $flag              ;;
4370             -f*-*|-W*|-mimpure-text)                      ;;
4371             -shared)              echo -G                 ;;
4372             *)                    echo $flag              ;;
4373         esac
4374     done
4375 }
4376
4377 probe_cc(){
4378     pfx=$1
4379     _cc=$2
4380     first=$3
4381
4382     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4383     unset _ld_o _ldflags _ld_lib _ld_path
4384     unset _depflags _DEPCMD _DEPFLAGS
4385     _flags_filter=echo
4386
4387     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4388         true # no-op to avoid reading stdin in following checks
4389     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4390         _type=llvm_gcc
4391         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4392         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4393         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4394         _cflags_speed='-O3'
4395         _cflags_size='-Os'
4396     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4397         _type=gcc
4398         gcc_version=$($_cc --version | head -n1)
4399         gcc_basever=$($_cc -dumpversion)
4400         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4401         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4402         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4403         case $gcc_basever in
4404             2) ;;
4405             2.*) ;;
4406             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4407         esac
4408         if [ "$first" = true ]; then
4409             case $gcc_basever in
4410                 4.2*)
4411                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4412             esac
4413         fi
4414         _cflags_speed='-O3'
4415         _cflags_size='-Os'
4416     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4417         _type=icc
4418         _ident=$($_cc --version | head -n1)
4419         _depflags='-MMD'
4420         _cflags_speed='-O3'
4421         _cflags_size='-Os'
4422         _cflags_noopt='-O1'
4423         _flags_filter=icc_flags
4424     elif $_cc -v 2>&1 | grep -q xlc; then
4425         _type=xlc
4426         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4427         _cflags_speed='-O5'
4428         _cflags_size='-O5 -qcompact'
4429     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4430         test -d "$sysroot" || die "No valid sysroot specified."
4431         _type=armcc
4432         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4433         armcc_conf="$PWD/armcc.conf"
4434         $_cc --arm_linux_configure                 \
4435              --arm_linux_config_file="$armcc_conf" \
4436              --configure_sysroot="$sysroot"        \
4437              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4438              die "Error creating armcc configuration file."
4439         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4440         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4441         as_default="${cross_prefix}gcc"
4442         _depflags='-MMD'
4443         _cflags_speed='-O3'
4444         _cflags_size='-Os'
4445     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4446         _type=clang
4447         _ident=$($_cc --version 2>/dev/null | head -n1)
4448         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4449         _cflags_speed='-O3'
4450         _cflags_size='-Oz'
4451     elif $_cc -V 2>&1 | grep -q Sun; then
4452         _type=suncc
4453         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4454         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4455         _DEPFLAGS='-xM1 -xc99'
4456         _ldflags='-std=c99'
4457         _cflags_speed='-O5'
4458         _cflags_size='-O5 -xspace'
4459         _flags_filter=suncc_flags
4460     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4461         _type=pathscale
4462         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4463         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4464         _cflags_speed='-O2'
4465         _cflags_size='-Os'
4466         _flags_filter='filter_out -Wdisabled-optimization'
4467     elif $_cc -v 2>&1 | grep -q Open64; then
4468         _type=open64
4469         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4470         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4471         _cflags_speed='-O2'
4472         _cflags_size='-Os'
4473         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4474     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4475         _type=armasm
4476         _ident=$($_cc | head -n1)
4477         # 4509: "This form of conditional instruction is deprecated"
4478         _flags="-nologo -ignore 4509"
4479         _flags_filter=armasm_flags
4480     elif $_cc 2>&1 | grep -q Intel; then
4481         _type=icl
4482         _ident=$($_cc 2>&1 | head -n1)
4483         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4484         # Not only is O3 broken on 13.x+ but it is slower on all previous
4485         # versions (tested) as well.
4486         _cflags_speed="-O2"
4487         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4488         if $_cc 2>&1 | grep -q Linker; then
4489             _ld_o='-out:$@'
4490         else
4491             _ld_o='-Fe$@'
4492         fi
4493         _cc_o='-Fo$@'
4494         _cc_e='-P'
4495         _flags_filter=icl_flags
4496         _ld_lib='lib%.a'
4497         _ld_path='-libpath:'
4498         # -Qdiag-error to make icl error when seeing certain unknown arguments
4499         _flags='-nologo -Qdiag-error:4044,10157'
4500         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4501         # with MSVC which enables it by default.
4502         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4503         disable stripping
4504     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4505         # lld can emulate multiple different linkers; in ms link.exe mode,
4506         # the -? parameter gives the help output which contains an identifyable
4507         # string, while it gives an error in other modes.
4508         _type=lld-link
4509         # The link.exe mode doesn't have a switch for getting the version,
4510         # but we can force it back to gnu mode and get the version from there.
4511         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4512         _ld_o='-out:$@'
4513         _flags_filter=msvc_flags
4514         _ld_lib='lib%.a'
4515         _ld_path='-libpath:'
4516     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4517         _type=msvc
4518         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4519         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4520         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4521         _cflags_speed="-O2"
4522         _cflags_size="-O1"
4523         _cflags_noopt="-O1"
4524         if $_cc -nologo- 2>&1 | grep -q Linker; then
4525             _ld_o='-out:$@'
4526         else
4527             _ld_o='-Fe$@'
4528         fi
4529         _cc_o='-Fo$@'
4530         _cc_e='-P -Fi$@'
4531         _flags_filter=msvc_flags
4532         _ld_lib='lib%.a'
4533         _ld_path='-libpath:'
4534         _flags='-nologo'
4535         disable stripping
4536     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4537         _type=cparser
4538         _ident=$($_cc --version | head -n1)
4539         _depflags='-MMD'
4540         _cflags_speed='-O4'
4541         _cflags_size='-O2'
4542         _flags_filter=cparser_flags
4543     fi
4544
4545     eval ${pfx}_type=\$_type
4546     eval ${pfx}_ident=\$_ident
4547 }
4548
4549 set_ccvars(){
4550     eval ${1}_C=\${_cc_c-\${${1}_C}}
4551     eval ${1}_E=\${_cc_e-\${${1}_E}}
4552     eval ${1}_O=\${_cc_o-\${${1}_O}}
4553
4554     if [ -n "$_depflags" ]; then
4555         eval ${1}_DEPFLAGS=\$_depflags
4556     else
4557         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4558         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4559         eval DEP${1}FLAGS=\$_flags
4560     fi
4561 }
4562
4563 probe_cc cc "$cc" "true"
4564 cflags_filter=$_flags_filter
4565 cflags_speed=$_cflags_speed
4566 cflags_size=$_cflags_size
4567 cflags_noopt=$_cflags_noopt
4568 add_cflags $_flags $_cflags
4569 cc_ldflags=$_ldflags
4570 set_ccvars CC
4571 set_ccvars CXX
4572
4573 probe_cc hostcc "$host_cc"
4574 host_cflags_filter=$_flags_filter
4575 host_cflags_speed=$_cflags_speed
4576 add_host_cflags  $_flags $_cflags
4577 set_ccvars HOSTCC
4578
4579 test -n "$cc_type" && enable $cc_type ||
4580     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4581
4582 : ${as_default:=$cc}
4583 : ${objcc_default:=$cc}
4584 : ${dep_cc_default:=$cc}
4585 : ${ld_default:=$cc}
4586 : ${host_ld_default:=$host_cc}
4587 set_default ar as objcc dep_cc ld ln_s host_ld windres
4588
4589 probe_cc as "$as"
4590 asflags_filter=$_flags_filter
4591 add_asflags $_flags $_cflags
4592 set_ccvars AS
4593
4594 probe_cc objcc "$objcc"
4595 objcflags_filter=$_flags_filter
4596 add_objcflags $_flags $_cflags
4597 set_ccvars OBJC
4598
4599 probe_cc ld "$ld"
4600 ldflags_filter=$_flags_filter
4601 add_ldflags $_flags $_ldflags
4602 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4603 LD_O=${_ld_o-$LD_O}
4604 LD_LIB=${_ld_lib-$LD_LIB}
4605 LD_PATH=${_ld_path-$LD_PATH}
4606
4607 probe_cc hostld "$host_ld"
4608 host_ldflags_filter=$_flags_filter
4609 add_host_ldflags $_flags $_ldflags
4610 HOSTLD_O=${_ld_o-$HOSTLD_O}
4611
4612 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4613     probe_cc depcc "$dep_cc"
4614     CCDEP=${_DEPCMD:-$DEPCMD}
4615     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4616     DEPCCFLAGS=$_flags
4617 fi
4618
4619 if $ar 2>&1 | grep -q Microsoft; then
4620     arflags="-nologo"
4621     ar_o='-out:$@'
4622 elif $ar 2>&1 | grep -q "\[D\] "; then
4623     arflags="rcD"
4624     ar_o='$@'
4625 else
4626     arflags="rc"
4627     ar_o='$@'
4628 fi
4629
4630 add_cflags $extra_cflags
4631 add_cxxflags $extra_cxxflags
4632 add_objcflags $extra_objcflags
4633 add_asflags $extra_cflags
4634
4635 if test -n "$sysroot"; then
4636     case "$cc_type" in
4637         gcc|llvm_gcc|clang)
4638             add_cppflags --sysroot="$sysroot"
4639             add_ldflags --sysroot="$sysroot"
4640         ;;
4641     esac
4642 fi
4643
4644 if test "$cpu" = host; then
4645     enabled cross_compile &&
4646         die "--cpu=host makes no sense when cross-compiling."
4647
4648     case "$cc_type" in
4649         gcc|llvm_gcc)
4650             check_native(){
4651                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4652                 sed -n "/cc1.*$1=/{
4653                             s/.*$1=\\([^ ]*\\).*/\\1/
4654                             p
4655                             q
4656                         }" $TMPE
4657             }
4658             cpu=$(check_native -march || check_native -mcpu)
4659         ;;
4660         clang)
4661             check_native(){
4662                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4663                 sed -n "/cc1.*-target-cpu /{
4664                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4665                             p
4666                             q
4667                         }" $TMPE
4668             }
4669             cpu=$(check_native -march)
4670         ;;
4671     esac
4672
4673     test "${cpu:-host}" = host &&
4674         die "--cpu=host not supported with compiler $cc"
4675 fi
4676
4677 # Deal with common $arch aliases
4678 case "$arch" in
4679     aarch64|arm64)
4680         arch="aarch64"
4681     ;;
4682     arm*|iPad*|iPhone*)
4683         arch="arm"
4684     ;;
4685     mips*|IP*)
4686         case "$arch" in
4687         *el)
4688             add_cppflags -EL
4689             add_ldflags -EL
4690         ;;
4691         *eb)
4692             add_cppflags -EB
4693             add_ldflags -EB
4694         ;;
4695         esac
4696         arch="mips"
4697     ;;
4698     parisc*|hppa*)
4699         arch="parisc"
4700     ;;
4701     "Power Macintosh"|ppc*|powerpc*)
4702         arch="ppc"
4703     ;;
4704     s390|s390x)
4705         arch="s390"
4706     ;;
4707     sh4|sh)
4708         arch="sh4"
4709     ;;
4710     sun4*|sparc*)
4711         arch="sparc"
4712     ;;
4713     tilegx|tile-gx)
4714         arch="tilegx"
4715     ;;
4716     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4717         arch="x86"
4718     ;;
4719 esac
4720
4721 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4722 enable $arch
4723
4724 # Add processor-specific flags
4725 if enabled aarch64; then
4726
4727     case $cpu in
4728         armv*)
4729             cpuflags="-march=$cpu"
4730         ;;
4731         *)
4732             cpuflags="-mcpu=$cpu"
4733         ;;
4734     esac
4735
4736 elif enabled alpha; then
4737
4738     cpuflags="-mcpu=$cpu"
4739
4740 elif enabled arm; then
4741
4742     check_arm_arch() {
4743         test_cpp_condition stddef.h \
4744             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4745             $cpuflags
4746     }
4747
4748     probe_arm_arch() {
4749         if   check_arm_arch 4;        then echo armv4
4750         elif check_arm_arch 4T;       then echo armv4t
4751         elif check_arm_arch 5;        then echo armv5
4752         elif check_arm_arch 5E;       then echo armv5e
4753         elif check_arm_arch 5T;       then echo armv5t
4754         elif check_arm_arch 5TE;      then echo armv5te
4755         elif check_arm_arch 5TEJ;     then echo armv5te
4756         elif check_arm_arch 6;        then echo armv6
4757         elif check_arm_arch 6J;       then echo armv6j
4758         elif check_arm_arch 6K;       then echo armv6k
4759         elif check_arm_arch 6Z;       then echo armv6z
4760         elif check_arm_arch 6KZ;      then echo armv6zk
4761         elif check_arm_arch 6ZK;      then echo armv6zk
4762         elif check_arm_arch 6T2;      then echo armv6t2
4763         elif check_arm_arch 7;        then echo armv7
4764         elif check_arm_arch 7A  7_A;  then echo armv7-a
4765         elif check_arm_arch 7S;       then echo armv7-a
4766         elif check_arm_arch 7R  7_R;  then echo armv7-r
4767         elif check_arm_arch 7M  7_M;  then echo armv7-m
4768         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4769         elif check_arm_arch 8A  8_A;  then echo armv8-a
4770         fi
4771     }
4772
4773     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4774
4775     case $cpu in
4776         armv*)
4777             cpuflags="-march=$cpu"
4778             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4779         ;;
4780         *)
4781             cpuflags="-mcpu=$cpu"
4782             case $cpu in
4783                 cortex-a*)                               subarch=armv7a  ;;
4784                 cortex-r*)                               subarch=armv7r  ;;
4785                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4786                 arm11*)                                  subarch=armv6   ;;
4787                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4788                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4789                 *)                             subarch=$(probe_arm_arch) ;;
4790             esac
4791         ;;
4792     esac
4793
4794     case "$subarch" in
4795         armv5t*)    enable fast_clz                ;;
4796         armv[6-8]*)
4797             enable fast_clz
4798             disabled fast_unaligned || enable fast_unaligned
4799             ;;
4800     esac
4801
4802 elif enabled avr32; then
4803
4804     case $cpu in
4805         ap7[02]0[0-2])
4806             subarch="avr32_ap"
4807             cpuflags="-mpart=$cpu"
4808         ;;
4809         ap)
4810             subarch="avr32_ap"
4811             cpuflags="-march=$cpu"
4812         ;;
4813         uc3[ab]*)
4814             subarch="avr32_uc"
4815             cpuflags="-mcpu=$cpu"
4816         ;;
4817         uc)
4818             subarch="avr32_uc"
4819             cpuflags="-march=$cpu"
4820         ;;
4821     esac
4822
4823 elif enabled bfin; then
4824
4825     cpuflags="-mcpu=$cpu"
4826
4827 elif enabled mips; then
4828
4829     cpuflags="-march=$cpu"
4830
4831     if [ "$cpu" != "generic" ]; then
4832         disable mips32r2
4833         disable mips32r5
4834         disable mips64r2
4835         disable mips32r6
4836         disable mips64r6
4837         disable loongson2
4838         disable loongson3
4839
4840         case $cpu in
4841             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4842                 enable mips32r2
4843                 disable msa
4844             ;;
4845             p5600|i6400|p6600)
4846                 disable mipsdsp
4847                 disable mipsdspr2
4848             ;;
4849             loongson*)
4850                 enable loongson2
4851                 enable loongson3
4852                 enable local_aligned
4853                 enable simd_align_16
4854                 enable fast_64bit
4855                 enable fast_clz
4856                 enable fast_cmov
4857                 enable fast_unaligned
4858                 disable aligned_stack
4859                 disable mipsdsp
4860                 disable mipsdspr2
4861                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4862                 if [ $cc == gcc ]; then
4863                     gcc_version=$(gcc -dumpversion)
4864                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4865                         expensive_optimization_flag=""
4866                     else
4867                         expensive_optimization_flag="-fno-expensive-optimizations"
4868                     fi
4869                 fi
4870                 case $cpu in
4871                     loongson3*)
4872                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4873                     ;;
4874                     loongson2e)
4875                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4876                     ;;
4877                     loongson2f)
4878                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4879                     ;;
4880                 esac
4881             ;;
4882             *)
4883                 # Unknown CPU. Disable everything.
4884                 warn "unknown CPU. Disabling all MIPS optimizations."
4885                 disable mipsfpu
4886                 disable mipsdsp
4887                 disable mipsdspr2
4888                 disable msa
4889                 disable mmi
4890             ;;
4891         esac
4892
4893         case $cpu in
4894             24kc)
4895                 disable mipsfpu
4896                 disable mipsdsp
4897                 disable mipsdspr2
4898             ;;
4899             24kf*)
4900                 disable mipsdsp
4901                 disable mipsdspr2
4902             ;;
4903             24kec|34kc|1004kc)
4904                 disable mipsfpu
4905                 disable mipsdspr2
4906             ;;
4907             24kef*|34kf*|1004kf*)
4908                 disable mipsdspr2
4909             ;;
4910             74kc)
4911                 disable mipsfpu
4912             ;;
4913             p5600)
4914                 enable mips32r5
4915                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4916             ;;
4917             i6400)
4918                 enable mips64r6
4919                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4920             ;;
4921             p6600)
4922                 enable mips64r6
4923                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4924             ;;
4925         esac
4926     else
4927         # We do not disable anything. Is up to the user to disable the unwanted features.
4928         warn 'generic cpu selected'
4929     fi
4930
4931 elif enabled ppc; then
4932
4933     disable ldbrx
4934
4935     case $(tolower $cpu) in
4936         601|ppc601|powerpc601)
4937             cpuflags="-mcpu=601"
4938             disable altivec
4939         ;;
4940         603*|ppc603*|powerpc603*)
4941             cpuflags="-mcpu=603"
4942             disable altivec
4943         ;;
4944         604*|ppc604*|powerpc604*)
4945             cpuflags="-mcpu=604"
4946             disable altivec
4947         ;;
4948         g3|75*|ppc75*|powerpc75*)
4949             cpuflags="-mcpu=750"
4950             disable altivec
4951         ;;
4952         g4|745*|ppc745*|powerpc745*)
4953             cpuflags="-mcpu=7450"
4954             disable vsx
4955         ;;
4956         74*|ppc74*|powerpc74*)
4957             cpuflags="-mcpu=7400"
4958             disable vsx
4959         ;;
4960         g5|970|ppc970|powerpc970)
4961             cpuflags="-mcpu=970"
4962             disable vsx
4963         ;;
4964         power[3-6]*)
4965             cpuflags="-mcpu=$cpu"
4966             disable vsx
4967         ;;
4968         power[7-8]*)
4969             cpuflags="-mcpu=$cpu"
4970         ;;
4971         cell)
4972             cpuflags="-mcpu=cell"
4973             enable ldbrx
4974             disable vsx
4975         ;;
4976         e500mc)
4977             cpuflags="-mcpu=e500mc"
4978             disable altivec
4979         ;;
4980         e500v2)
4981             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4982             disable altivec
4983             disable dcbzl
4984         ;;
4985         e500)
4986             cpuflags="-mcpu=8540 -mhard-float"
4987             disable altivec
4988             disable dcbzl
4989         ;;
4990     esac
4991
4992 elif enabled sparc; then
4993
4994     case $cpu in
4995         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4996             cpuflags="-mcpu=$cpu"
4997         ;;
4998         ultrasparc*|niagara[234])
4999             cpuflags="-mcpu=$cpu"
5000         ;;
5001     esac
5002
5003 elif enabled x86; then
5004
5005     case $cpu in
5006         i[345]86|pentium)
5007             cpuflags="-march=$cpu"
5008             disable i686
5009             disable mmx
5010         ;;
5011         # targets that do NOT support nopl and conditional mov (cmov)
5012         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5013             cpuflags="-march=$cpu"
5014             disable i686
5015         ;;
5016         # targets that do support nopl and conditional mov (cmov)
5017         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5018         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5019         |amdfam10|barcelona|b[dt]ver*|znver*)
5020             cpuflags="-march=$cpu"
5021             enable i686
5022             enable fast_cmov
5023         ;;
5024         # targets that do support conditional mov but on which it's slow
5025         pentium4|pentium4m|prescott|nocona)
5026             cpuflags="-march=$cpu"
5027             enable i686
5028             disable fast_cmov
5029         ;;
5030     esac
5031
5032 fi
5033
5034 if [ "$cpu" != generic ]; then
5035     add_cflags  $cpuflags
5036     add_asflags $cpuflags
5037     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5038 fi
5039
5040 # compiler sanity check
5041 test_exec <<EOF
5042 int main(void){ return 0; }
5043 EOF
5044 if test "$?" != 0; then
5045     echo "$cc is unable to create an executable file."
5046     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5047         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5048         echo "Only do this if you know what cross compiling means."
5049     fi
5050     die "C compiler test failed."
5051 fi
5052
5053 add_cppflags -D_ISOC99_SOURCE
5054 add_cxxflags -D__STDC_CONSTANT_MACROS
5055 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5056
5057 # some compilers silently accept -std=c11, so we also need to check that the
5058 # version macro is defined properly
5059 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5060     add_cflags -std=c11 ||
5061     check_cflags -std=c99
5062
5063 check_cppflags -D_FILE_OFFSET_BITS=64
5064 check_cppflags -D_LARGEFILE_SOURCE
5065
5066 add_host_cppflags -D_ISOC99_SOURCE
5067 check_host_cflags -std=c99
5068 check_host_cflags -Wall
5069 check_host_cflags $host_cflags_speed
5070
5071 check_64bit(){
5072     arch32=$1
5073     arch64=$2
5074     expr=${3:-'sizeof(void *) > 4'}
5075     test_code cc "" "int test[2*($expr) - 1]" &&
5076         subarch=$arch64 || subarch=$arch32
5077     enable $subarch
5078 }
5079
5080 case "$arch" in
5081     aarch64|alpha|ia64)
5082         enabled shared && enable_weak pic
5083     ;;
5084     mips)
5085         check_64bit mips mips64 '_MIPS_SIM > 1'
5086         enabled shared && enable_weak pic
5087     ;;
5088     parisc)
5089         check_64bit parisc parisc64
5090         enabled shared && enable_weak pic
5091     ;;
5092     ppc)
5093         check_64bit ppc ppc64
5094         enabled shared && enable_weak pic
5095     ;;
5096     s390)
5097         check_64bit s390 s390x
5098         enabled shared && enable_weak pic
5099     ;;
5100     sparc)
5101         check_64bit sparc sparc64
5102         enabled shared && enable_weak pic
5103     ;;
5104     x86)
5105         check_64bit x86_32 x86_64
5106         # Treat x32 as x64 for now. Note it also needs pic if shared
5107         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5108             subarch=x86_64 && enable x86_64 && disable x86_32
5109         if enabled x86_64; then
5110             enabled shared && enable_weak pic
5111             objformat=elf64
5112         fi
5113     ;;
5114 esac
5115
5116 # OS specific
5117 case $target_os in
5118     aix)
5119         SHFLAGS=-shared
5120         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5121         enabled shared && add_ldflags -Wl,-brtl
5122         arflags='-Xany -r -c'
5123         striptype=""
5124         ;;
5125     android)
5126         disable symver
5127         enable section_data_rel_ro
5128         add_cflags -fPIE
5129         add_ldexeflags -fPIE -pie
5130         SLIB_INSTALL_NAME='$(SLIBNAME)'
5131         SLIB_INSTALL_LINKS=
5132         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5133         ;;
5134     haiku)
5135         prefix_default="/boot/common"
5136         network_extralibs="-lnetwork"
5137         host_extralibs=
5138         ;;
5139     sunos)
5140         SHFLAGS='-shared -Wl,-h,$$(@F)'
5141         enabled x86 && append SHFLAGS -mimpure-text
5142         network_extralibs="-lsocket -lnsl"
5143         add_cppflags -D__EXTENSIONS__
5144         # When using suncc to build, the Solaris linker will mark
5145         # an executable with each instruction set encountered by
5146         # the Solaris assembler.  As our libraries contain their own
5147         # guards for processor-specific code, instead suppress
5148         # generation of the HWCAPS ELF section on Solaris x86 only.
5149         enabled_all suncc x86 &&
5150             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5151             add_ldflags -Wl,-M,mapfile
5152         nm_default='nm -P -g'
5153         striptype=""
5154         version_script='-M'
5155         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5156         ;;
5157     netbsd)
5158         disable symver
5159         oss_indev_extralibs="-lossaudio"
5160         oss_outdev_extralibs="-lossaudio"
5161         enabled gcc || check_ldflags -Wl,-zmuldefs
5162         ;;
5163     openbsd|bitrig)
5164         disable symver
5165         striptype=""
5166         SHFLAGS='-shared'
5167         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5168         SLIB_INSTALL_LINKS=
5169         oss_indev_extralibs="-lossaudio"
5170         oss_outdev_extralibs="-lossaudio"
5171         ;;
5172     dragonfly)
5173         disable symver
5174         ;;
5175     freebsd)
5176         ;;
5177     bsd/os)
5178         add_extralibs -lpoll -lgnugetopt
5179         strip="strip -d"
5180         ;;
5181     darwin)
5182         enabled ppc && add_asflags -force_cpusubtype_ALL
5183         install_name_dir_default='$(SHLIBDIR)'
5184         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5185         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5186         strip="${strip} -x"
5187         add_ldflags -Wl,-dynamic,-search_paths_first
5188         check_cflags -Werror=partial-availability
5189         SLIBSUF=".dylib"
5190         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5191         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5192         enabled x86_64 && objformat="macho64" || objformat="macho32"
5193         enabled_any pic shared x86_64 ||
5194             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5195         check_headers dispatch/dispatch.h &&
5196             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5197         if test -n "$sysroot"; then
5198             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5199             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5200         fi
5201         version_script='-exported_symbols_list'
5202         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5203         ;;
5204     msys*)
5205         die "Native MSYS builds are discouraged, please use the MINGW environment."
5206         ;;
5207     mingw32*|mingw64*)
5208         target_os=mingw32
5209         LIBTARGET=i386
5210         if enabled x86_64; then
5211             LIBTARGET="i386:x86-64"
5212         elif enabled arm; then
5213             LIBTARGET="arm"
5214         elif enabled aarch64; then
5215             LIBTARGET="arm64"
5216         fi
5217         if enabled shared; then
5218             # Cannot build both shared and static libs when using dllimport.
5219             disable static
5220         fi
5221         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5222         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5223         shlibdir_default="$bindir_default"
5224         SLIBPREF=""
5225         SLIBSUF=".dll"
5226         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5227         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5228         if test_cmd lib.exe -list; then
5229             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5230             if enabled x86_64; then
5231                 LIBTARGET=x64
5232             fi
5233         else
5234             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5235         fi
5236         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5237         SLIB_INSTALL_LINKS=
5238         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5239         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5240         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5241         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5242         enabled x86_64 && objformat="win64" || objformat="win32"
5243         dlltool="${cross_prefix}dlltool"
5244         ranlib=:
5245         enable dos_paths
5246         check_ldflags -Wl,--nxcompat,--dynamicbase
5247         # Lets work around some stupidity in binutils.
5248         # ld will strip relocations from executables even though we need them
5249         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5250         # however ld then forgets what the entry point should be (oops) so we
5251         # have to manually (re)set it.
5252         if enabled x86_32; then
5253             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5254         elif enabled x86_64; then
5255             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5256             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5257             # Set image base >4GB for extra entropy with HEASLR
5258             add_ldexeflags -Wl,--image-base,0x140000000
5259             append SHFLAGS -Wl,--image-base,0x180000000
5260         fi
5261         ;;
5262     win32|win64)
5263         disable symver
5264         if enabled shared; then
5265             # Link to the import library instead of the normal static library
5266             # for shared libs.
5267             LD_LIB='%.lib'
5268             # Cannot build both shared and static libs with MSVC or icl.
5269             disable static
5270         fi
5271         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5272         shlibdir_default="$bindir_default"
5273         SLIBPREF=""
5274         SLIBSUF=".dll"
5275         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5276         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5277         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5278         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5279         SLIB_INSTALL_LINKS=
5280         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5281         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5282         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5283         enabled x86_64 && objformat="win64" || objformat="win32"
5284         ranlib=:
5285         enable dos_paths
5286         ;;
5287     cygwin*)
5288         target_os=cygwin
5289         shlibdir_default="$bindir_default"
5290         SLIBPREF="cyg"
5291         SLIBSUF=".dll"
5292         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5293         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5294         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5295         SLIB_INSTALL_LINKS=
5296         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5297         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5298         enabled x86_64 && objformat="win64" || objformat="win32"
5299         enable dos_paths
5300         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5301         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5302         ;;
5303     *-dos|freedos|opendos)
5304         network_extralibs="-lsocket"
5305         objformat="coff"
5306         enable dos_paths
5307         ;;
5308     linux)
5309         enable section_data_rel_ro
5310         enabled_any arm aarch64 && enable_weak linux_perf
5311         ;;
5312     irix*)
5313         target_os=irix
5314         ranlib="echo ignoring ranlib"
5315         ;;
5316     os/2*)
5317         strip="lxlite -CS"
5318         striptype=""
5319         objformat="aout"
5320         add_cppflags -D_GNU_SOURCE
5321         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5322         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5323         LIBSUF="_s.a"
5324         SLIBPREF=""
5325         SLIBSUF=".dll"
5326         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5327         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5328         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5329             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5330             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5331             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5332             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5333         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5334             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5335         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5336         SLIB_INSTALL_LINKS=
5337         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5338         enable dos_paths
5339         enable_weak os2threads
5340         ;;
5341     gnu/kfreebsd)
5342         add_cppflags -D_BSD_SOURCE
5343         ;;
5344     gnu)
5345         ;;
5346     qnx)
5347         add_cppflags -D_QNX_SOURCE
5348         network_extralibs="-lsocket"
5349         ;;
5350     symbian)
5351         SLIBSUF=".dll"
5352         enable dos_paths
5353         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5354         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5355         add_ldflags -Wl,--target1-abs,--no-undefined \
5356                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5357                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5358         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5359                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5360                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5361         ;;
5362     minix)
5363         ;;
5364     none)
5365         ;;
5366     *)
5367         die "Unknown OS '$target_os'."
5368         ;;
5369 esac
5370
5371 # test if creating links works
5372 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5373 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5374 mkdir "$link_dest"
5375 $ln_s "$link_dest" "$link_name"
5376 touch "$link_dest/test_file"
5377 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5378     # create link to source path
5379     [ -e src ] && rm src
5380     $ln_s "$source_path" src
5381     source_link=src
5382 else
5383     # creating directory links doesn't work
5384     # fall back to using the full source path
5385     source_link="$source_path"
5386 fi
5387 # cleanup
5388 rm -r "$link_dest"
5389 rm -r "$link_name"
5390
5391 # determine libc flavour
5392
5393 probe_libc(){
5394     pfx=$1
5395     pfx_no_=${pfx%_}
5396     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5397     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5398         eval ${pfx}libc_type=uclibc
5399         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5400     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5401         eval ${pfx}libc_type=glibc
5402         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5403     # MinGW headers can be installed on Cygwin, so check for newlib first.
5404     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5405         eval ${pfx}libc_type=newlib
5406         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5407     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5408     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5409         eval ${pfx}libc_type=mingw64
5410         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5411             add_compat msvcrt/snprintf.o
5412             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5413         fi
5414         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5415         eval test \$${pfx_no_}cc_type = "gcc" &&
5416             add_${pfx}cppflags -D__printf__=__gnu_printf__
5417         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5418             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5419     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5420          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5421         eval ${pfx}libc_type=mingw32
5422         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5423             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5424             die "ERROR: MinGW32 runtime version must be >= 3.15."
5425         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5426         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5427             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5428         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5429             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5430         eval test \$${pfx_no_}cc_type = "gcc" &&
5431             add_${pfx}cppflags -D__printf__=__gnu_printf__
5432     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5433         eval ${pfx}libc_type=msvcrt
5434         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5435             if [ "$pfx" = host_ ]; then
5436                 add_host_cppflags -Dsnprintf=_snprintf
5437             else
5438                 add_compat strtod.o strtod=avpriv_strtod
5439                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5440                                              _snprintf=avpriv_snprintf  \
5441                                              vsnprintf=avpriv_vsnprintf
5442             fi
5443         fi
5444         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5445         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5446         # 0x601 by default unless something else is set by the user.
5447         # This can easily lead to us detecting functions only present
5448         # in such new versions and producing binaries requiring windows 7.0.
5449         # Therefore explicitly set the default to Vista unless the user has
5450         # set something else on the command line.
5451         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5452         # family. For these cases, configure is free to use any functions
5453         # found in the SDK headers by default. (Alternatively, we could force
5454         # _WIN32_WINNT to 0x0602 in that case.)
5455         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5456             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5457 #ifdef WINAPI_FAMILY
5458 #include <winapifamily.h>
5459 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5460 #error not desktop
5461 #endif
5462 #endif
5463 EOF
5464         if [ "$pfx" = "" ]; then
5465             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5466             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5467         fi
5468     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5469         eval ${pfx}libc_type=klibc
5470     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5471         eval ${pfx}libc_type=bionic
5472     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5473         eval ${pfx}libc_type=solaris
5474         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5475     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5476         eval ${pfx}libc_type=djgpp
5477         add_cppflags -U__STRICT_ANSI__
5478         add_cflags "-include $source_path/compat/djgpp/math.h"
5479         add_compat djgpp/math.o
5480     fi
5481     test_${pfx}cc <<EOF
5482 #include <time.h>
5483 void *v = localtime_r;
5484 EOF
5485 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5486 #include <time.h>
5487 void *v = localtime_r;
5488 EOF
5489
5490     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5491 }
5492
5493 probe_libc
5494 probe_libc host_
5495
5496 # hacks for compiler/libc/os combinations
5497
5498 case $libc_type in
5499     bionic)
5500         add_compat strtod.o strtod=avpriv_strtod
5501         ;;
5502 esac
5503
5504 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5505     add_cppflags '-I\$(SRC_PATH)/compat/float'
5506
5507 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5508
5509 set_default libdir
5510 : ${shlibdir_default:="$libdir"}
5511 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5512
5513 set_default $PATHS_LIST
5514 set_default nm
5515
5516 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5517
5518 enable_weak_pic() {
5519     disabled pic && return
5520     enable pic
5521     add_cppflags -DPIC
5522     case "$target_os" in
5523     mingw*|cygwin*|win*)
5524         ;;
5525     *)
5526         add_cflags -fPIC
5527         add_asflags -fPIC
5528         ;;
5529     esac
5530 }
5531
5532 enabled pic && enable_weak_pic
5533
5534 test_cc <<EOF || die "Symbol mangling check failed."
5535 int ff_extern;
5536 EOF
5537 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5538 extern_prefix=${sym%%ff_extern*}
5539
5540 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5541
5542 for restrict_keyword in restrict __restrict__ __restrict ""; do
5543     test_code cc "" "char * $restrict_keyword p" && break
5544 done
5545
5546 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5547
5548 # The global variable ensures the bits appear unchanged in the object file.
5549 test_cc <<EOF || die "endian test failed"
5550 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5551 EOF
5552 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5553
5554 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5555
5556 if ! enabled ppc64 || enabled bigendian; then
5557     disable vsx
5558 fi
5559
5560 check_gas() {
5561     log "check_gas using '$as' as AS"
5562     # :vararg is used on aarch64, arm and ppc altivec
5563     check_as vararg "
5564 .macro m n, y:vararg=0
5565 \n: .int \y
5566 .endm
5567 m x" || return 1
5568     # .altmacro is only used in arm asm
5569     ! enabled arm || check_as gnu_as ".altmacro"
5570 }
5571
5572 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5573     nogas=:
5574     enabled_any arm aarch64 && nogas=die
5575     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5576     as_noop=-v
5577
5578     case $as_type in
5579         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5580         gcc)  gaspp_as_type=gas ;;
5581         *)    gaspp_as_type=$as_type ;;
5582     esac
5583
5584     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5585
5586     test "${as#*gas-preprocessor.pl}" != "$as" ||
5587     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5588         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5589
5590     if ! check_gas ; then
5591         as=${gas:=$as}
5592         check_gas || \
5593             $nogas "GNU assembler not found, install/update gas-preprocessor"
5594     fi
5595
5596     check_as as_func ".func test
5597                       .endfunc"
5598 fi
5599
5600 check_inline_asm inline_asm_labels '"1:\n"'
5601
5602 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5603
5604 if enabled aarch64; then
5605     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5606     # internal assembler in clang 3.3 does not support this instruction
5607     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5608     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5609
5610     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5611
5612 elif enabled alpha; then
5613
5614     check_cflags -mieee
5615
5616 elif enabled arm; then
5617
5618     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5619     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5620 float func(float a, float b){ return a+b; }
5621 EOF
5622     enabled thumb && check_cflags -mthumb || check_cflags -marm
5623
5624     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5625         :
5626     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5627         :
5628     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5629         case "${cross_prefix:-$cc}" in
5630             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5631             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5632 __asm__ (".eabi_attribute 28, 1");
5633 int main(void) { return 0; }
5634 EOF
5635         esac
5636         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5637     fi
5638
5639     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5640     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5641     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5642     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5643     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5644     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5645     enabled setend  && check_insn setend  'setend be'
5646
5647     [ $target_os = linux ] || [ $target_os = android ] ||
5648         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5649             $ARCH_EXT_LIST_ARM
5650
5651     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5652
5653     check_as as_arch_directive ".arch armv7-a"
5654     check_as as_dn_directive   "ra .dn d0.i16"
5655     check_as as_fpu_directive  ".fpu neon"
5656
5657     # llvm's integrated assembler supports .object_arch from llvm 3.5
5658     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5659         check_as as_object_arch ".object_arch armv4"
5660
5661     # MS armasm fails to assemble our PIC constructs
5662     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5663
5664 elif enabled mips; then
5665
5666     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5667     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5668     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5669
5670     # Enable minimum ISA based on selected options
5671     if enabled mips64; then
5672         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5673         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5674         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5675     else
5676         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5677         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5678         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5679         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5680     fi
5681
5682     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5683     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5684     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5685     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5686     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5687
5688     if enabled bigendian && enabled msa; then
5689         disable msa
5690     fi
5691
5692 elif enabled parisc; then
5693
5694     if enabled gcc; then
5695         case $($cc -dumpversion) in
5696             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5697         esac
5698     fi
5699
5700 elif enabled ppc; then
5701
5702     enable local_aligned
5703
5704     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5705     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5706     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5707     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5708
5709     if enabled altivec; then
5710         check_cflags -maltivec -mabi=altivec
5711
5712         # check if our compiler supports Motorola AltiVec C API
5713         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5714                                     vector signed int v2 = (vector signed int) { 1 };
5715                                     v1 = vec_add(v1, v2);"
5716
5717         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5718     fi
5719
5720     if enabled vsx; then
5721         check_cflags -mvsx &&
5722         check_cc vsx altivec.h "int v[4] = { 0 };
5723                                 vector signed int v1 = vec_vsx_ld(0, v);"
5724     fi
5725
5726     if enabled power8; then
5727         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5728     fi
5729
5730 elif enabled x86; then
5731
5732     check_builtin rdtsc    intrin.h   "__rdtsc()"
5733     check_builtin mm_empty mmintrin.h "_mm_empty()"
5734
5735     enable local_aligned
5736
5737     # check whether EBP is available on x86
5738     # As 'i' is stored on the stack, this program will crash
5739     # if the base pointer is used to access it because the
5740     # base pointer is cleared in the inline assembly code.
5741     check_exec_crash <<EOF && enable ebp_available
5742 volatile int i=0;
5743 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5744 return i;
5745 EOF
5746
5747     # check whether EBX is available on x86
5748     check_inline_asm ebx_available '""::"b"(0)' &&
5749         check_inline_asm ebx_available '"":::"%ebx"'
5750
5751     # check whether xmm clobbers are supported
5752     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5753
5754     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5755         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5756
5757     # check whether binutils is new enough to compile SSSE3/MMXEXT
5758     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5759     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5760
5761     probe_x86asm(){
5762         x86asmexe_probe=$1
5763         if test_cmd $x86asmexe_probe -v; then
5764             x86asmexe=$x86asmexe_probe
5765             x86asm_type=nasm
5766             x86asm_debug="-g -F dwarf"
5767             X86ASMDEP=
5768             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5769         elif test_cmd $x86asmexe_probe --version; then
5770             x86asmexe=$x86asmexe_probe
5771             x86asm_type=yasm
5772             x86asm_debug="-g dwarf2"
5773             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5774             X86ASM_DEPFLAGS=
5775         fi
5776         check_x86asm x86asm "movbe ecx, [5]"
5777     }
5778
5779     if ! disabled_any asm mmx x86asm; then
5780         disable x86asm
5781         for program in $x86asmexe nasm yasm; do
5782             probe_x86asm $program && break
5783         done
5784         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5785         X86ASMFLAGS="-f $objformat"
5786         enabled pic               && append X86ASMFLAGS "-DPIC"
5787         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5788         case "$objformat" in
5789             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5790         esac
5791
5792         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5793         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5794         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5795         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5796         check_x86asm cpunop          "CPU amdnop"
5797     fi
5798
5799     case "$cpu" in
5800         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5801             disable fast_clz
5802         ;;
5803     esac
5804
5805 fi
5806
5807 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5808
5809 check_ldflags -Wl,--as-needed
5810 check_ldflags -Wl,-z,noexecstack
5811
5812 if ! disabled network; then
5813     check_func getaddrinfo $network_extralibs
5814     check_func inet_aton $network_extralibs
5815
5816     check_type netdb.h "struct addrinfo"
5817     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5818     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5819     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5820     check_type poll.h "struct pollfd"
5821     check_type netinet/sctp.h "struct sctp_event_subscribe"
5822     check_struct "sys/socket.h" "struct msghdr" msg_flags
5823     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5824     check_type netinet/in.h "struct sockaddr_in6"
5825     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5826     check_type "sys/types.h sys/socket.h" socklen_t
5827
5828     # Prefer arpa/inet.h over winsock2
5829     if check_headers arpa/inet.h ; then
5830         check_func closesocket
5831     elif check_headers winsock2.h ; then
5832         check_func_headers winsock2.h closesocket -lws2 &&
5833             network_extralibs="-lws2" ||
5834         { check_func_headers winsock2.h closesocket -lws2_32 &&
5835             network_extralibs="-lws2_32"; } || disable winsock2_h network
5836         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5837
5838         check_type ws2tcpip.h socklen_t
5839         check_type ws2tcpip.h "struct addrinfo"
5840         check_type ws2tcpip.h "struct group_source_req"
5841         check_type ws2tcpip.h "struct ip_mreq_source"
5842         check_type ws2tcpip.h "struct ipv6_mreq"
5843         check_type winsock2.h "struct pollfd"
5844         check_struct winsock2.h "struct sockaddr" sa_len
5845         check_type ws2tcpip.h "struct sockaddr_in6"
5846         check_type ws2tcpip.h "struct sockaddr_storage"
5847     else
5848         disable network
5849     fi
5850 fi
5851
5852 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5853 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5854 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5855 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5856 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5857 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5858 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5859
5860 case "$custom_allocator" in
5861     jemalloc)
5862         # jemalloc by default does not use a prefix
5863         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5864     ;;
5865     tcmalloc)
5866         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5867         malloc_prefix=tc_
5868     ;;
5869 esac
5870
5871 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5872 check_func  ${malloc_prefix}memalign            && enable memalign
5873 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5874
5875 check_func  access
5876 check_func_headers stdlib.h arc4random
5877 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5878 check_func  fcntl
5879 check_func  fork
5880 check_func  gethrtime
5881 check_func  getopt
5882 check_func  getrusage
5883 check_func  gettimeofday
5884 check_func  isatty
5885 check_func  mkstemp
5886 check_func  mmap
5887 check_func  mprotect
5888 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5889 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5890 check_func  sched_getaffinity
5891 check_func  setrlimit
5892 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5893 check_func  strerror_r
5894 check_func  sysconf
5895 check_func  sysctl
5896 check_func  usleep
5897
5898 check_func_headers conio.h kbhit
5899 check_func_headers io.h setmode
5900 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5901 check_func_headers mach/mach_time.h mach_absolute_time
5902 check_func_headers stdlib.h getenv
5903 check_func_headers sys/stat.h lstat
5904
5905 check_func_headers windows.h GetProcessAffinityMask
5906 check_func_headers windows.h GetProcessTimes
5907 check_func_headers windows.h GetSystemTimeAsFileTime
5908 check_func_headers windows.h LoadLibrary
5909 check_func_headers windows.h MapViewOfFile
5910 check_func_headers windows.h PeekNamedPipe
5911 check_func_headers windows.h SetConsoleTextAttribute
5912 check_func_headers windows.h SetConsoleCtrlHandler
5913 check_func_headers windows.h Sleep
5914 check_func_headers windows.h VirtualAlloc
5915 check_func_headers glob.h glob
5916 enabled xlib &&
5917     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5918
5919 check_headers direct.h
5920 check_headers dirent.h
5921 check_headers dxgidebug.h
5922 check_headers dxva.h
5923 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5924 check_headers io.h
5925 check_headers linux/perf_event.h
5926 check_headers libcrystalhd/libcrystalhd_if.h
5927 check_headers malloc.h
5928 check_headers net/udplite.h
5929 check_headers poll.h
5930 check_headers sys/param.h
5931 check_headers sys/resource.h
5932 check_headers sys/select.h
5933 check_headers sys/time.h
5934 check_headers sys/un.h
5935 check_headers termios.h
5936 check_headers unistd.h
5937 check_headers valgrind/valgrind.h
5938 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5939 check_headers windows.h
5940 check_headers X11/extensions/XvMClib.h
5941 check_headers asm/types.h
5942
5943 # it seems there are versions of clang in some distros that try to use the
5944 # gcc headers, which explodes for stdatomic
5945 # so we also check that atomics actually work here
5946 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5947
5948 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5949 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5950     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5951 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5952 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5953 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5954
5955 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5956 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5957 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5958
5959 enabled appkit       && check_apple_framework AppKit
5960 enabled audiotoolbox && check_apple_framework AudioToolbox
5961 enabled avfoundation && check_apple_framework AVFoundation
5962 enabled coreimage    && check_apple_framework CoreImage
5963 enabled videotoolbox && check_apple_framework VideoToolbox
5964
5965 check_apple_framework CoreFoundation
5966 check_apple_framework CoreMedia
5967 check_apple_framework CoreVideo
5968
5969 enabled avfoundation && {
5970     disable coregraphics applicationservices
5971     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5972     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5973
5974 enabled videotoolbox && {
5975     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5976     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5977 }
5978
5979 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5980
5981 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5982 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5983 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5984 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5985 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5986
5987 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5988 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5989 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5990 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5991 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5992 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5993
5994 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5995
5996 if ! disabled ffnvcodec; then
5997     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5998           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5999       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
6000           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
6001 fi
6002
6003 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6004
6005 if ! disabled w32threads && ! enabled pthreads; then
6006     check_func_headers "windows.h process.h" _beginthreadex &&
6007         check_type "windows.h" CONDITION_VARIABLE &&
6008         check_type "windows.h" INIT_ONCE &&
6009         enable w32threads || disable w32threads
6010     if ! enabled w32threads && enabled winrt; then
6011         check_func_headers "windows.h" CreateThread &&
6012             enable w32threads || disable w32threads
6013     fi
6014 fi
6015
6016 # check for some common methods of building with pthread support
6017 # do this before the optional library checks as some of them require pthreads
6018 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6019     if check_lib pthreads pthread.h pthread_join   -pthread &&
6020        check_lib pthreads pthread.h pthread_create -pthread; then
6021         add_cflags -pthread
6022     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6023          check_lib pthreads pthread.h pthread_create -pthreads; then
6024         add_cflags -pthreads
6025     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6026          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6027         add_cflags -ldl -pthread
6028     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6029          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6030         :
6031     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6032          check_lib pthreads pthread.h pthread_create -lpthread; then
6033         :
6034     elif check_func pthread_join && check_func pthread_create; then
6035         enable pthreads
6036     fi
6037     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6038
6039     if enabled pthreads; then
6040         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6041         check_func pthread_cancel $pthreads_extralibs
6042     fi
6043 fi
6044
6045 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6046                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6047 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6048 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6049
6050 # On some systems dynamic loading requires no extra linker flags
6051 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6052
6053 check_lib libm math.h sin -lm
6054
6055 atan2f_args=2
6056 copysign_args=2
6057 hypot_args=2
6058 ldexpf_args=2
6059 powf_args=2
6060
6061 for func in $MATH_FUNCS; do
6062     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6063 done
6064
6065 for func in $COMPLEX_FUNCS; do
6066     eval check_complexfunc $func \${${func}_args:-1}
6067 done
6068
6069 # these are off by default, so fail if requested and not available
6070 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6071 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6072 enabled decklink          && { require_headers DeckLinkAPI.h &&
6073                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6074 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6075 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6076 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6077 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6078 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6079 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6080 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6081 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6082 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6083 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6084 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6085 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6086 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6087                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6088                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6089 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6090 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6091 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.1.0" "dav1d/dav1d.h" dav1d_version
6092 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6093 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6094 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6095 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6096                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6097                                  warn "using libfdk without pkg-config"; } }
6098 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"
6099 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6100 enabled fontconfig        && enable libfontconfig
6101 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6102 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6103 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6104 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6105                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6106 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6107                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6108                                done || die "ERROR: libgsm not found"; }
6109 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6110 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6111 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6112 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6113 # While it may appear that require is being used as a pkg-config
6114 # fallback for libmfx, it is actually being used to detect a different
6115 # installation route altogether.  If libmfx is installed via the Intel
6116 # Media SDK or Intel Media Server Studio, these don't come with
6117 # pkg-config support.  Instead, users should make sure that the build
6118 # can find the libraries and headers through other means.
6119 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6120                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6121 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6122 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6123 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6124                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6125 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6126                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6127                                die "ERROR: libnpp not found"; }
6128 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6129 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6130 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6131                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6132                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6133                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6134 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6135 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6136                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6137 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6138 enabled libopus           && {
6139     enabled libopus_decoder && {
6140         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6141     }
6142     enabled libopus_encoder && {
6143         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6144     }
6145 }
6146 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6147 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6148 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6149 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6150 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6151 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6152                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6153 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6154 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6155 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6156 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6157 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6158 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6159 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6160 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6161 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6162 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6163                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6164                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6165 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6166 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6167 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6168 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6169 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6170                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6171
6172 enabled libvpx            && {
6173     enabled libvpx_vp8_decoder && {
6174         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6175             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6176                 die "ERROR: libvpx decoder version must be >=1.4.0";
6177     }
6178     enabled libvpx_vp8_encoder && {
6179         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6180             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6181                 die "ERROR: libvpx encoder version must be >=1.4.0";
6182     }
6183     enabled libvpx_vp9_decoder && {
6184         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6185             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6186     }
6187     enabled libvpx_vp9_encoder && {
6188         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6189             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6190     }
6191     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6192         die "libvpx enabled but no supported decoders found"
6193     fi
6194 }
6195
6196 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6197 enabled libwebp           && {
6198     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6199     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6200 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6201                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6202                                  warn "using libx264 without pkg-config"; } } &&
6203                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6204                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6205 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6206                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6207 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6208 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6209 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6210 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6211 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6212 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6213                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6214                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6215 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6216 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6217                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6218                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6219                                die "ERROR: mbedTLS not found"; }
6220 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6221 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6222                                { ! enabled cross_compile &&
6223                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6224                                  add_ldflags -L/opt/vc/lib/ &&
6225                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6226                                die "ERROR: mmal not found" &&
6227                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6228 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6229                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6230                                die "ERROR: openal not found"; } &&
6231                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6232                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6233 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6234                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6235                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6236                                die "ERROR: opencl not found"; } &&
6237                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6238                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6239                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6240 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6241                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6242                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6243                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6244                                die "ERROR: opengl not found."
6245                              }
6246 enabled omx               && require_headers OMX_Core.h
6247 enabled omx_rpi           && { check_headers OMX_Core.h ||
6248                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6249                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6250 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6251                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6252                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6253                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6254                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6255                                die "ERROR: openssl not found"; }
6256 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6257                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6258                                { enabled libdrm ||
6259                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6260                              }
6261 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6262
6263
6264 if enabled gcrypt; then
6265     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6266     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6267         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6268         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6269         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6270             die "ERROR: gcrypt not found"
6271         add_cflags $gcrypt_cflags
6272     else
6273         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6274     fi
6275 fi
6276
6277 if enabled sdl2; then
6278     SDL2_CONFIG="${cross_prefix}sdl2-config"
6279     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6280     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6281         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6282         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6283         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6284         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6285         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6286             enable sdl2
6287     fi
6288     if test $target_os = "mingw32"; then
6289         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6290     fi
6291 fi
6292
6293 if enabled decklink; then
6294     case $target_os in
6295         mingw32*|mingw64*|win32|win64)
6296             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6297             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6298             ;;
6299     esac
6300 fi
6301
6302 enabled securetransport &&
6303     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6304     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6305         disable securetransport
6306
6307 enabled securetransport &&
6308     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6309
6310 enabled schannel &&
6311     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6312     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6313     schannel_extralibs="-lsecur32" ||
6314         disable schannel
6315
6316 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6317 enabled makeinfo \
6318     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6319     && enable makeinfo_html || disable makeinfo_html
6320 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6321 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6322 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6323 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6324
6325 # check V4L2 codecs available in the API
6326 check_headers linux/fb.h
6327 check_headers linux/videodev2.h
6328 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6329 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6330 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6331 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6332 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6333 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6334 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6335 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6336 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6337 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6338 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6339
6340 check_headers sys/videoio.h
6341 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6342
6343 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6344 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6345 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6346 # w32api 3.12 had it defined wrong
6347 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6348
6349 check_type "dshow.h" IBaseFilter
6350
6351 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6352 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6353     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6354     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6355     check_headers "dev/ic/bt8xx.h"
6356
6357 if check_struct sys/soundcard.h audio_buf_info bytes; then
6358     enable_sanitized sys/soundcard.h
6359 else
6360     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6361     #include <sys/soundcard.h>
6362     audio_buf_info abc;
6363 EOF
6364 fi
6365
6366 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6367     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6368
6369 enabled libjack &&
6370     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6371
6372 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6373
6374 if enabled libcdio; then
6375     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6376     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6377     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6378     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6379     die "ERROR: No usable libcdio/cdparanoia found"
6380 fi
6381
6382 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6383     disable libxcb_shm libxcb_shape libxcb_xfixes
6384
6385 if enabled libxcb; then
6386     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6387     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6388     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6389 fi
6390
6391 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6392
6393 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6394 # the desktop api partition
6395 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6396 #ifdef WINAPI_FAMILY
6397 #include <winapifamily.h>
6398 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6399 #error desktop, not uwp
6400 #else
6401 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6402 #endif
6403 #else
6404 #error no family set
6405 #endif
6406 EOF
6407
6408 enabled vaapi &&
6409     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6410
6411 if enabled vaapi; then
6412     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6413
6414     if enabled xlib; then
6415         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6416     fi
6417
6418     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6419 fi
6420
6421 if enabled_all opencl libdrm ; then
6422     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6423         enable opencl_drm_beignet
6424     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6425         enable opencl_drm_arm
6426 fi
6427
6428 if enabled_all opencl vaapi ; then
6429     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6430     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6431         enable opencl_vaapi_intel_media
6432 fi
6433
6434 if enabled_all opencl dxva2 ; then
6435     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6436         enable opencl_dxva2
6437 fi
6438
6439 if enabled_all opencl d3d11va ; then
6440     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6441         enable opencl_d3d11
6442 fi
6443
6444 enabled vdpau &&
6445     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6446
6447 enabled vdpau &&
6448     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6449
6450 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6451
6452 if enabled x86; then
6453     case $target_os in
6454         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6455             ;;
6456         *)
6457             disable ffnvcodec cuvid nvdec nvenc
6458             ;;
6459     esac
6460 else
6461     disable ffnvcodec cuvid nvdec nvenc
6462 fi
6463
6464 enabled ffnvcodec && enable cuda
6465
6466 enabled nvenc &&
6467     test_cc -I$source_path <<EOF || disable nvenc
6468 #include <ffnvcodec/nvEncodeAPI.h>
6469 NV_ENCODE_API_FUNCTION_LIST flist;
6470 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6471 int main(void) { return 0; }
6472 EOF
6473
6474 enabled amf &&
6475     check_cpp_condition amf "AMF/core/Version.h" \
6476         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6477
6478 # Funny iconv installations are not unusual, so check it after all flags have been set
6479 if enabled libc_iconv; then
6480     check_func_headers iconv.h iconv
6481 elif enabled iconv; then
6482     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6483 fi
6484
6485 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6486
6487 # add some useful compiler flags if supported
6488 check_cflags -Wdeclaration-after-statement
6489 check_cflags -Wall
6490 check_cflags -Wdisabled-optimization
6491 check_cflags -Wpointer-arith
6492 check_cflags -Wredundant-decls
6493 check_cflags -Wwrite-strings
6494 check_cflags -Wtype-limits
6495 check_cflags -Wundef
6496 check_cflags -Wmissing-prototypes
6497 check_cflags -Wno-pointer-to-int-cast
6498 check_cflags -Wstrict-prototypes
6499 check_cflags -Wempty-body
6500
6501 if enabled extra_warnings; then
6502     check_cflags -Wcast-qual
6503     check_cflags -Wextra
6504     check_cflags -Wpedantic
6505 fi
6506
6507 check_disable_warning(){
6508     warning_flag=-W${1#-Wno-}
6509     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6510 }
6511
6512 test_cflags -Werror=unused-command-line-argument &&
6513     append unknown_warning_flags "-Werror=unused-command-line-argument"
6514 test_cflags -Werror=unknown-warning-option &&
6515     append unknown_warning_flags "-Werror=unknown-warning-option"
6516
6517 check_disable_warning -Wno-parentheses
6518 check_disable_warning -Wno-switch
6519 check_disable_warning -Wno-format-zero-length
6520 check_disable_warning -Wno-pointer-sign
6521 check_disable_warning -Wno-unused-const-variable
6522 check_disable_warning -Wno-bool-operation
6523 check_disable_warning -Wno-char-subscripts
6524
6525 check_disable_warning_headers(){
6526     warning_flag=-W${1#-Wno-}
6527     test_cflags $warning_flag && add_cflags_headers $1
6528 }
6529
6530 check_disable_warning_headers -Wno-deprecated-declarations
6531 check_disable_warning_headers -Wno-unused-variable
6532
6533 test_cc <<EOF && enable blocks_extension
6534 void (^block)(void);
6535 EOF
6536
6537 # add some linker flags
6538 check_ldflags -Wl,--warn-common
6539 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6540 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6541 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6542
6543 # add some strip flags
6544 check_stripflags -x
6545
6546 enabled neon_clobber_test &&
6547     check_ldflags -Wl,--wrap,avcodec_open2              \
6548                   -Wl,--wrap,avcodec_decode_audio4      \
6549                   -Wl,--wrap,avcodec_decode_video2      \
6550                   -Wl,--wrap,avcodec_decode_subtitle2   \
6551                   -Wl,--wrap,avcodec_encode_audio2      \
6552                   -Wl,--wrap,avcodec_encode_video2      \
6553                   -Wl,--wrap,avcodec_encode_subtitle    \
6554                   -Wl,--wrap,avcodec_send_packet        \
6555                   -Wl,--wrap,avcodec_receive_packet     \
6556                   -Wl,--wrap,avcodec_send_frame         \
6557                   -Wl,--wrap,avcodec_receive_frame      \
6558                   -Wl,--wrap,swr_convert                \
6559                   -Wl,--wrap,avresample_convert ||
6560     disable neon_clobber_test
6561
6562 enabled xmm_clobber_test &&
6563     check_ldflags -Wl,--wrap,avcodec_open2              \
6564                   -Wl,--wrap,avcodec_decode_audio4      \
6565                   -Wl,--wrap,avcodec_decode_video2      \
6566                   -Wl,--wrap,avcodec_decode_subtitle2   \
6567                   -Wl,--wrap,avcodec_encode_audio2      \
6568                   -Wl,--wrap,avcodec_encode_video2      \
6569                   -Wl,--wrap,avcodec_encode_subtitle    \
6570                   -Wl,--wrap,avcodec_send_packet        \
6571                   -Wl,--wrap,avcodec_receive_packet     \
6572                   -Wl,--wrap,avcodec_send_frame         \
6573                   -Wl,--wrap,avcodec_receive_frame      \
6574                   -Wl,--wrap,swr_convert                \
6575                   -Wl,--wrap,avresample_convert         \
6576                   -Wl,--wrap,sws_scale ||
6577     disable xmm_clobber_test
6578
6579 check_ld "cc" proper_dce <<EOF
6580 extern const int array[512];
6581 static inline int func(void) { return array[0]; }
6582 int main(void) { return 0; }
6583 EOF
6584
6585 if enabled proper_dce; then
6586     echo "X { local: *; };" > $TMPV
6587     if test_ldflags -Wl,${version_script},$TMPV; then
6588         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6589         quotes='""'
6590         test_cc <<EOF && enable symver_asm_label
6591 void ff_foo(void) __asm__ ("av_foo@VERSION");
6592 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6593 EOF
6594         test_cc <<EOF && enable symver_gnu_asm
6595 __asm__(".symver ff_foo,av_foo@VERSION");
6596 void ff_foo(void) {}
6597 EOF
6598     fi
6599 fi
6600
6601 if [ -z "$optflags" ]; then
6602     if enabled small; then
6603         optflags=$cflags_size
6604     elif enabled optimizations; then
6605         optflags=$cflags_speed
6606     else
6607         optflags=$cflags_noopt
6608     fi
6609 fi
6610
6611 if [ -z "$nvccflags" ]; then
6612     nvccflags=$nvccflags_default
6613 fi
6614
6615 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6616     nvccflags="$nvccflags -m64"
6617 else
6618     nvccflags="$nvccflags -m32"
6619 fi
6620
6621 check_optflags(){
6622     check_cflags "$@"
6623     enabled lto && check_ldflags "$@"
6624 }
6625
6626 check_optflags $optflags
6627 check_optflags -fno-math-errno
6628 check_optflags -fno-signed-zeros
6629
6630 if enabled lto; then
6631     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6632     check_cflags  -flto
6633     check_ldflags -flto $cpuflags
6634     disable inline_asm_direct_symbol_refs
6635 fi
6636
6637 enabled ftrapv && check_cflags -ftrapv
6638
6639 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6640 int x;
6641 EOF
6642
6643
6644 if enabled icc; then
6645     # Just warnings, no remarks
6646     check_cflags -w1
6647     # -wd: Disable following warnings
6648     # 144, 167, 556: -Wno-pointer-sign
6649     # 188: enumerated type mixed with another type
6650     # 1292: attribute "foo" ignored
6651     # 1419: external declaration in primary source file
6652     # 10006: ignoring unknown option -fno-signed-zeros
6653     # 10148: ignoring unknown option -Wno-parentheses
6654     # 10156: ignoring option '-W'; no argument required
6655     # 13200: No EMMS instruction before call to function
6656     # 13203: No EMMS instruction before return from function
6657     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6658     # 11030: Warning unknown option --as-needed
6659     # 10156: ignoring option '-export'; no argument required
6660     check_ldflags -wd10156,11030
6661     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6662     enable ebp_available
6663     # The test above does not test linking
6664     enabled lto && disable symver_asm_label
6665     if enabled x86_32; then
6666         icc_version=$($cc -dumpversion)
6667         test ${icc_version%%.*} -ge 11 &&
6668             check_cflags -falign-stack=maintain-16-byte ||
6669             disable aligned_stack
6670     fi
6671 elif enabled gcc; then
6672     check_optflags -fno-tree-vectorize
6673     check_cflags -Werror=format-security
6674     check_cflags -Werror=implicit-function-declaration
6675     check_cflags -Werror=missing-prototypes
6676     check_cflags -Werror=return-type
6677     check_cflags -Werror=vla
6678     check_cflags -Wformat
6679     check_cflags -fdiagnostics-color=auto
6680     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6681     if enabled x86_32; then
6682         case $target_os in
6683         *bsd*)
6684             # BSDs don't guarantee a 16 byte aligned stack, but we can
6685             # request GCC to try to maintain 16 byte alignment throughout
6686             # function calls. Library entry points that might call assembly
6687             # functions align the stack. (The parameter means 2^4 bytes.)
6688             check_cflags -mpreferred-stack-boundary=4
6689             ;;
6690         esac
6691     fi
6692 elif enabled llvm_gcc; then
6693     check_cflags -mllvm -stack-alignment=16
6694 elif enabled clang; then
6695     if enabled x86_32; then
6696         # Clang doesn't support maintaining alignment without assuming the
6697         # same alignment in every function. If 16 byte alignment would be
6698         # enabled, one would also have to either add attribute_align_arg on
6699         # every single entry point into the libraries or enable -mstackrealign
6700         # (doing stack realignment in every single function).
6701         case $target_os in
6702         mingw32|win32|*bsd*)
6703             disable aligned_stack
6704             ;;
6705         *)
6706             check_cflags -mllvm -stack-alignment=16
6707             check_cflags -mstack-alignment=16
6708             ;;
6709         esac
6710     else
6711         check_cflags -mllvm -stack-alignment=16
6712         check_cflags -mstack-alignment=16
6713     fi
6714     check_cflags -Qunused-arguments
6715     check_cflags -Werror=implicit-function-declaration
6716     check_cflags -Werror=missing-prototypes
6717     check_cflags -Werror=return-type
6718 elif enabled cparser; then
6719     add_cflags -Wno-missing-variable-declarations
6720     add_cflags -Wno-empty-statement
6721 elif enabled armcc; then
6722     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6723     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6724     # 2523: use of inline assembly is deprecated
6725     add_cflags -W${armcc_opt},--diag_suppress=2523
6726     add_cflags -W${armcc_opt},--diag_suppress=1207
6727     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6728     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6729     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6730     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6731 elif enabled pathscale; then
6732     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6733     disable inline_asm
6734 elif enabled_any msvc icl; then
6735     enabled x86_32 && disable aligned_stack
6736     enabled_all x86_32 debug && add_cflags -Oy-
6737     enabled debug && add_ldflags -debug
6738     enable pragma_deprecated
6739     if enabled icl; then
6740         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6741         # (correctly) on icl 13.x.
6742         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6743             add_cflags -Qansi-alias
6744         # Some inline asm is not compilable in debug
6745         if enabled debug; then
6746             disable ebp_available
6747             disable ebx_available
6748         fi
6749     fi
6750     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6751     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6752     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6753     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6754     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6755     # MSVC 2013 and newer can handle it fine.
6756     # If this declspec fails, force including stdlib.h before the restrict redefinition
6757     # happens in config.h.
6758     if [ $restrict_keyword != restrict ]; then
6759         test_cc <<EOF || add_cflags -FIstdlib.h
6760 __declspec($restrict_keyword) void *foo(int);
6761 EOF
6762     fi
6763     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6764     # Issue has been fixed in MSVC v19.00.24218.
6765     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6766         check_cflags -d2SSAOptimizer-
6767     # enable utf-8 source processing on VS2015 U2 and newer
6768     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6769         add_cflags -utf-8
6770 fi
6771
6772 for pfx in "" host_; do
6773     varname=${pfx%_}cc_type
6774     eval "type=\$$varname"
6775     if [ "$type" = "msvc" ]; then
6776         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6777 static inline int foo(int a) { return a; }
6778 EOF
6779     fi
6780 done
6781
6782 case $as_type in
6783     clang)
6784         add_asflags -Qunused-arguments
6785     ;;
6786 esac
6787
6788 case $ld_type in
6789     clang)
6790         check_ldflags -Qunused-arguments
6791     ;;
6792 esac
6793
6794 enable frame_thread_encoder
6795
6796 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6797
6798 check_deps $CONFIG_LIST       \
6799            $CONFIG_EXTRA      \
6800            $HAVE_LIST         \
6801            $ALL_COMPONENTS    \
6802
6803 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"
6804 enabled avresample && warn "Building with deprecated library libavresample"
6805
6806 case $target_os in
6807 haiku)
6808     disable memalign
6809     disable posix_memalign
6810     ;;
6811 *-dos|freedos|opendos)
6812     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6813         disable memalign
6814     fi
6815     ;;
6816 esac
6817
6818 flatten_extralibs(){
6819     nested_entries=
6820     list_name=$1
6821     eval list=\$${1}
6822     for entry in $list; do
6823         entry_copy=$entry
6824         resolve entry_copy
6825         flat_entries=
6826         for e in $entry_copy; do
6827             case $e in
6828                 *_extralibs) nested_entries="$nested_entries$e ";;
6829                           *) flat_entries="$flat_entries$e ";;
6830             esac
6831         done
6832         eval $entry="\$flat_entries"
6833     done
6834     append $list_name "$nested_entries"
6835
6836     resolve nested_entries
6837     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6838         flatten_extralibs $list_name
6839     fi
6840 }
6841
6842 flatten_extralibs_wrapper(){
6843     list_name=$1
6844     flatten_extralibs $list_name
6845     unique $list_name
6846     resolve $list_name
6847     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6848     eval printf \''%s'\' \""\$$list_name"\"
6849 }
6850
6851 for linkunit in $LIBRARY_LIST; do
6852     unset current_extralibs
6853     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6854     for comp in ${components}; do
6855         enabled $comp || continue
6856         comp_extralibs="${comp}_extralibs"
6857         append current_extralibs $comp_extralibs
6858     done
6859     eval prepend ${linkunit}_extralibs $current_extralibs
6860 done
6861
6862 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6863     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6864 done
6865
6866 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6867
6868 for thread in $THREADS_LIST; do
6869     if enabled $thread; then
6870         test -n "$thread_type" &&
6871             die "ERROR: Only one thread type must be selected." ||
6872             thread_type="$thread"
6873     fi
6874 done
6875
6876 if disabled stdatomic; then
6877     if enabled atomics_gcc; then
6878         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6879     elif enabled atomics_win32; then
6880         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6881     elif enabled atomics_suncc; then
6882         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6883     elif enabled pthreads; then
6884         add_compat atomics/pthread/stdatomic.o
6885         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6886     else
6887         enabled threads && die "Threading is enabled, but no atomics are available"
6888         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6889     fi
6890 fi
6891
6892 # Check if requested libraries were found.
6893 for lib in $AUTODETECT_LIBS; do
6894     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6895 done
6896
6897 enabled zlib && add_cppflags -DZLIB_CONST
6898
6899 # conditional library dependencies, in any order
6900 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6901 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6902 enabled afir_filter         && prepend avfilter_deps "avcodec"
6903 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6904 enabled aresample_filter    && prepend avfilter_deps "swresample"
6905 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6906 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6907 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6908 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6909 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6910 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6911 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6912 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6913 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6914 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6915 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6916 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6917 enabled pan_filter          && prepend avfilter_deps "swresample"
6918 enabled pp_filter           && prepend avfilter_deps "postproc"
6919 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6920 enabled resample_filter && prepend avfilter_deps "avresample"
6921 enabled sab_filter          && prepend avfilter_deps "swscale"
6922 enabled scale_filter    && prepend avfilter_deps "swscale"
6923 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6924 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6925 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6926 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6927 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6928 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6929 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6930 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6931 enabled spp_filter          && prepend avfilter_deps "avcodec"
6932 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6933 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6934 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6935 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6936
6937 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6938
6939 #FIXME
6940 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6941     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6942
6943 enabled opus_decoder    && prepend avcodec_deps "swresample"
6944
6945 # reorder the items at var $1 to align with the items order at var $2 .
6946 # die if an item at $1 is not at $2 .
6947 reorder_by(){
6948     eval rb_in=\$$1
6949     eval rb_ordered=\$$2
6950
6951     for rb in $rb_in; do
6952         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6953     done
6954
6955     rb_out=
6956     for rb in $rb_ordered; do
6957         is_in $rb $rb_in && rb_out="$rb_out$rb "
6958     done
6959     eval $1=\$rb_out
6960 }
6961
6962 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6963 # within a set of N items, N expansions are enough to expose a cycle.
6964 expand_deps(){
6965     unique ${1}_deps  # required for the early break test.
6966     for dummy in $LIBRARY_LIST; do  # N iteratios
6967         eval deps=\$${1}_deps
6968         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6969         unique ${1}_deps
6970         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6971     done
6972
6973     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6974     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6975 }
6976
6977 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6978 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6979
6980 map 'expand_deps $v' $LIBRARY_LIST
6981
6982 if test "$quiet" != "yes"; then
6983
6984 echo "install prefix            $prefix"
6985 echo "source path               $source_path"
6986 echo "C compiler                $cc"
6987 echo "C library                 $libc_type"
6988 if test "$host_cc" != "$cc"; then
6989     echo "host C compiler           $host_cc"
6990     echo "host C library            $host_libc_type"
6991 fi
6992 echo "ARCH                      $arch ($cpu)"
6993 if test "$build_suffix" != ""; then
6994     echo "build suffix              $build_suffix"
6995 fi
6996 if test "$progs_suffix" != ""; then
6997     echo "progs suffix              $progs_suffix"
6998 fi
6999 if test "$extra_version" != ""; then
7000     echo "version string suffix     $extra_version"
7001 fi
7002 echo "big-endian                ${bigendian-no}"
7003 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7004 if enabled x86; then
7005     echo "standalone assembly       ${x86asm-no}"
7006     echo "x86 assembler             ${x86asmexe}"
7007     echo "MMX enabled               ${mmx-no}"
7008     echo "MMXEXT enabled            ${mmxext-no}"
7009     echo "3DNow! enabled            ${amd3dnow-no}"
7010     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7011     echo "SSE enabled               ${sse-no}"
7012     echo "SSSE3 enabled             ${ssse3-no}"
7013     echo "AESNI enabled             ${aesni-no}"
7014     echo "AVX enabled               ${avx-no}"
7015     echo "AVX2 enabled              ${avx2-no}"
7016     echo "AVX-512 enabled           ${avx512-no}"
7017     echo "XOP enabled               ${xop-no}"
7018     echo "FMA3 enabled              ${fma3-no}"
7019     echo "FMA4 enabled              ${fma4-no}"
7020     echo "i686 features enabled     ${i686-no}"
7021     echo "CMOV is fast              ${fast_cmov-no}"
7022     echo "EBX available             ${ebx_available-no}"
7023     echo "EBP available             ${ebp_available-no}"
7024 fi
7025 if enabled aarch64; then
7026     echo "NEON enabled              ${neon-no}"
7027     echo "VFP enabled               ${vfp-no}"
7028 fi
7029 if enabled arm; then
7030     echo "ARMv5TE enabled           ${armv5te-no}"
7031     echo "ARMv6 enabled             ${armv6-no}"
7032     echo "ARMv6T2 enabled           ${armv6t2-no}"
7033     echo "VFP enabled               ${vfp-no}"
7034     echo "NEON enabled              ${neon-no}"
7035     echo "THUMB enabled             ${thumb-no}"
7036 fi
7037 if enabled mips; then
7038     echo "MIPS FPU enabled          ${mipsfpu-no}"
7039     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7040     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7041     echo "MIPS MSA enabled          ${msa-no}"
7042     echo "LOONGSON MMI enabled      ${mmi-no}"
7043 fi
7044 if enabled ppc; then
7045     echo "AltiVec enabled           ${altivec-no}"
7046     echo "VSX enabled               ${vsx-no}"
7047     echo "POWER8 enabled            ${power8-no}"
7048     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7049     echo "dcbzl available           ${dcbzl-no}"
7050 fi
7051 echo "debug symbols             ${debug-no}"
7052 echo "strip symbols             ${stripping-no}"
7053 echo "optimize for size         ${small-no}"
7054 echo "optimizations             ${optimizations-no}"
7055 echo "static                    ${static-no}"
7056 echo "shared                    ${shared-no}"
7057 echo "postprocessing support    ${postproc-no}"
7058 echo "network support           ${network-no}"
7059 echo "threading support         ${thread_type-no}"
7060 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7061 echo "texi2html enabled         ${texi2html-no}"
7062 echo "perl enabled              ${perl-no}"
7063 echo "pod2man enabled           ${pod2man-no}"
7064 echo "makeinfo enabled          ${makeinfo-no}"
7065 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7066 test -n "$random_seed" &&
7067     echo "random seed               ${random_seed}"
7068 echo
7069
7070 echo "External libraries:"
7071 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7072 echo
7073
7074 echo "External libraries providing hardware acceleration:"
7075 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7076 echo
7077
7078 echo "Libraries:"
7079 print_enabled '' $LIBRARY_LIST | print_in_columns
7080 echo
7081
7082 echo "Programs:"
7083 print_enabled '' $PROGRAM_LIST | print_in_columns
7084 echo
7085
7086 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7087     echo "Enabled ${type}s:"
7088     eval list=\$$(toupper $type)_LIST
7089     print_enabled '_*' $list | print_in_columns
7090     echo
7091 done
7092
7093 if test -n "$ignore_tests"; then
7094     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7095     echo "Ignored FATE tests:"
7096     echo $ignore_tests | print_in_columns
7097     echo
7098 fi
7099
7100 echo "License: $license"
7101
7102 fi # test "$quiet" != "yes"
7103
7104 if test -n "$WARNINGS"; then
7105     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7106     enabled fatal_warnings && exit 1
7107 fi
7108
7109 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7110
7111 esc(){
7112     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7113 }
7114
7115 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7116
7117 enabled stripping || strip="echo skipping strip"
7118 enabled stripping || striptype=""
7119
7120 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7121
7122 cat > ffbuild/config.mak <<EOF
7123 # Automatically generated by configure - do not modify!
7124 ifndef FFMPEG_CONFIG_MAK
7125 FFMPEG_CONFIG_MAK=1
7126 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7127 prefix=$prefix
7128 LIBDIR=\$(DESTDIR)$libdir
7129 SHLIBDIR=\$(DESTDIR)$shlibdir
7130 INCDIR=\$(DESTDIR)$incdir
7131 BINDIR=\$(DESTDIR)$bindir
7132 DATADIR=\$(DESTDIR)$datadir
7133 DOCDIR=\$(DESTDIR)$docdir
7134 MANDIR=\$(DESTDIR)$mandir
7135 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7136 INSTALL_NAME_DIR=$install_name_dir
7137 SRC_PATH=$source_path
7138 SRC_LINK=$source_link
7139 ifndef MAIN_MAKEFILE
7140 SRC_PATH:=\$(SRC_PATH:.%=..%)
7141 endif
7142 CC_IDENT=$cc_ident
7143 ARCH=$arch
7144 INTRINSICS=$intrinsics
7145 EXTERN_PREFIX=$extern_prefix
7146 CC=$cc
7147 CXX=$cxx
7148 AS=$as
7149 OBJCC=$objcc
7150 LD=$ld
7151 DEPCC=$dep_cc
7152 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7153 DEPAS=$as
7154 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7155 X86ASM=$x86asmexe
7156 DEPX86ASM=$x86asmexe
7157 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7158 AR=$ar
7159 ARFLAGS=$arflags
7160 AR_O=$ar_o
7161 AR_CMD=$ar
7162 NM_CMD=$nm
7163 RANLIB=$ranlib
7164 STRIP=$strip
7165 STRIPTYPE=$striptype
7166 NVCC=$nvcc
7167 CP=cp -p
7168 LN_S=$ln_s
7169 CPPFLAGS=$CPPFLAGS
7170 CFLAGS=$CFLAGS
7171 CXXFLAGS=$CXXFLAGS
7172 OBJCFLAGS=$OBJCFLAGS
7173 ASFLAGS=$ASFLAGS
7174 NVCCFLAGS=$nvccflags
7175 AS_C=$AS_C
7176 AS_O=$AS_O
7177 OBJCC_C=$OBJCC_C
7178 OBJCC_E=$OBJCC_E
7179 OBJCC_O=$OBJCC_O
7180 CC_C=$CC_C
7181 CC_E=$CC_E
7182 CC_O=$CC_O
7183 CXX_C=$CXX_C
7184 CXX_O=$CXX_O
7185 NVCC_C=$NVCC_C
7186 NVCC_O=$NVCC_O
7187 LD_O=$LD_O
7188 X86ASM_O=$X86ASM_O
7189 LD_LIB=$LD_LIB
7190 LD_PATH=$LD_PATH
7191 DLLTOOL=$dlltool
7192 WINDRES=$windres
7193 DEPWINDRES=$dep_cc
7194 DOXYGEN=$doxygen
7195 LDFLAGS=$LDFLAGS
7196 LDEXEFLAGS=$LDEXEFLAGS
7197 LDSOFLAGS=$LDSOFLAGS
7198 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7199 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7200 X86ASMFLAGS=$X86ASMFLAGS
7201 BUILDSUF=$build_suffix
7202 PROGSSUF=$progs_suffix
7203 FULLNAME=$FULLNAME
7204 LIBPREF=$LIBPREF
7205 LIBSUF=$LIBSUF
7206 LIBNAME=$LIBNAME
7207 SLIBPREF=$SLIBPREF
7208 SLIBSUF=$SLIBSUF
7209 EXESUF=$EXESUF
7210 EXTRA_VERSION=$extra_version
7211 CCDEP=$CCDEP
7212 CXXDEP=$CXXDEP
7213 CCDEP_FLAGS=$CCDEP_FLAGS
7214 ASDEP=$ASDEP
7215 ASDEP_FLAGS=$ASDEP_FLAGS
7216 X86ASMDEP=$X86ASMDEP
7217 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7218 CC_DEPFLAGS=$CC_DEPFLAGS
7219 AS_DEPFLAGS=$AS_DEPFLAGS
7220 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7221 HOSTCC=$host_cc
7222 HOSTLD=$host_ld
7223 HOSTCFLAGS=$host_cflags
7224 HOSTCPPFLAGS=$host_cppflags
7225 HOSTEXESUF=$HOSTEXESUF
7226 HOSTLDFLAGS=$host_ldflags
7227 HOSTEXTRALIBS=$host_extralibs
7228 DEPHOSTCC=$host_cc
7229 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7230 HOSTCCDEP=$HOSTCCDEP
7231 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7232 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7233 HOSTCC_C=$HOSTCC_C
7234 HOSTCC_O=$HOSTCC_O
7235 HOSTLD_O=$HOSTLD_O
7236 TARGET_EXEC=$target_exec $target_exec_args
7237 TARGET_PATH=$target_path
7238 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7239 CFLAGS-ffplay=${sdl2_cflags}
7240 CFLAGS_HEADERS=$CFLAGS_HEADERS
7241 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7242 EXTRALIBS=$extralibs
7243 COMPAT_OBJS=$compat_objs
7244 INSTALL=$install
7245 LIBTARGET=${LIBTARGET}
7246 SLIBNAME=${SLIBNAME}
7247 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7248 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7249 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7250 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7251 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7252 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7253 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7254 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7255 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7256 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7257 NOREDZONE_FLAGS=$noredzone_flags
7258 LIBFUZZER_PATH=$libfuzzer_path
7259 IGNORE_TESTS=$ignore_tests
7260 EOF
7261
7262 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7263
7264 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7265     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7266 done
7267
7268 cat > $TMPH <<EOF
7269 /* Automatically generated by configure - do not modify! */
7270 #ifndef FFMPEG_CONFIG_H
7271 #define FFMPEG_CONFIG_H
7272 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7273 #define FFMPEG_LICENSE "$(c_escape $license)"
7274 #define CONFIG_THIS_YEAR 2019
7275 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7276 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7277 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7278 #define av_restrict $restrict_keyword
7279 #define EXTERN_PREFIX "${extern_prefix}"
7280 #define EXTERN_ASM ${extern_prefix}
7281 #define BUILDSUF "$build_suffix"
7282 #define SLIBSUF "$SLIBSUF"
7283 #define HAVE_MMX2 HAVE_MMXEXT
7284 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7285 EOF
7286
7287 test -n "$assert_level" &&
7288     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7289
7290 test -n "$malloc_prefix" &&
7291     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7292
7293 if enabled x86asm; then
7294     append config_files $TMPASM
7295     cat > $TMPASM <<EOF
7296 ; Automatically generated by configure - do not modify!
7297 EOF
7298 fi
7299
7300 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7301
7302
7303 mkdir -p doc
7304 mkdir -p tests
7305 mkdir -p tests/api
7306 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7307
7308 print_config ARCH_   "$config_files" $ARCH_LIST
7309 print_config HAVE_   "$config_files" $HAVE_LIST
7310 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7311                                      $CONFIG_EXTRA      \
7312                                      $ALL_COMPONENTS    \
7313
7314 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7315 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7316
7317 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7318 cp_if_changed $TMPH config.h
7319 touch ffbuild/.config
7320
7321 enabled x86asm && cp_if_changed $TMPASM config.asm
7322
7323 cat > $TMPH <<EOF
7324 /* Generated by ffmpeg configure */
7325 #ifndef AVUTIL_AVCONFIG_H
7326 #define AVUTIL_AVCONFIG_H
7327 EOF
7328
7329 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7330
7331 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7332
7333 cp_if_changed $TMPH libavutil/avconfig.h
7334
7335 # full_filter_name_foo=vf_foo
7336 # full_filter_name_bar=asrc_bar
7337 # ...
7338 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7339
7340 # generate the lists of enabled components
7341 print_enabled_components(){
7342     file=$1
7343     struct_name=$2
7344     name=$3
7345     shift 3
7346     echo "static const $struct_name * const $name[] = {" > $TMPH
7347     for c in $*; do
7348         if enabled $c; then
7349             case $name in
7350                 filter_list)
7351                     eval c=\$full_filter_name_${c%_filter}
7352                 ;;
7353                 indev_list)
7354                     c=${c%_indev}_demuxer
7355                 ;;
7356                 outdev_list)
7357                     c=${c%_outdev}_muxer
7358                 ;;
7359             esac
7360             printf "    &ff_%s,\n" $c >> $TMPH
7361         fi
7362     done
7363     if [ "$name" = "filter_list" ]; then
7364         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7365             printf "    &ff_%s,\n" $c >> $TMPH
7366         done
7367     fi
7368     echo "    NULL };" >> $TMPH
7369     cp_if_changed $TMPH $file
7370 }
7371
7372 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7373 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7374 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7375 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7376 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7377 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7378 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7379 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7380 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7381
7382 # Settings for pkg-config files
7383
7384 cat > $TMPH <<EOF
7385 # Automatically generated by configure - do not modify!
7386 shared=$shared
7387 build_suffix=$build_suffix
7388 prefix=$prefix
7389 libdir=$libdir
7390 incdir=$incdir
7391 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7392 source_path=${source_path}
7393 LIBPREF=${LIBPREF}
7394 LIBSUF=${LIBSUF}
7395 extralibs_avutil="$avutil_extralibs"
7396 extralibs_avcodec="$avcodec_extralibs"
7397 extralibs_avformat="$avformat_extralibs"
7398 extralibs_avdevice="$avdevice_extralibs"
7399 extralibs_avfilter="$avfilter_extralibs"
7400 extralibs_avresample="$avresample_extralibs"
7401 extralibs_postproc="$postproc_extralibs"
7402 extralibs_swscale="$swscale_extralibs"
7403 extralibs_swresample="$swresample_extralibs"
7404 EOF
7405
7406 for lib in $LIBRARY_LIST; do
7407     lib_deps="$(eval echo \$${lib}_deps)"
7408     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7409 done
7410
7411 cp_if_changed $TMPH ffbuild/config.sh