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 [$doxygen_default]
 378   --host-cc=HOSTCC         use host C compiler HOSTCC
 379   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 380   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 381   --host-ld=HOSTLD         use host linker HOSTLD
 382   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 383   --host-libs=HLIBS        use libs HLIBS when linking for host
 384   --host-os=OS             compiler host OS [$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-osfuzz          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     x86asmexe
2440 "
2441
2442 CMDLINE_APPEND="
2443     extra_cflags
2444     extra_cxxflags
2445     extra_objcflags
2446     host_cppflags
2447 "
2448
2449 # code dependency declarations
2450
2451 # architecture extensions
2452
2453 armv5te_deps="arm"
2454 armv6_deps="arm"
2455 armv6t2_deps="arm"
2456 armv8_deps="aarch64"
2457 neon_deps_any="aarch64 arm"
2458 intrinsics_neon_deps="neon"
2459 vfp_deps_any="aarch64 arm"
2460 vfpv3_deps="vfp"
2461 setend_deps="arm"
2462
2463 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2464
2465 altivec_deps="ppc"
2466 dcbzl_deps="ppc"
2467 ldbrx_deps="ppc"
2468 ppc4xx_deps="ppc"
2469 vsx_deps="altivec"
2470 power8_deps="vsx"
2471
2472 loongson2_deps="mips"
2473 loongson3_deps="mips"
2474 mips32r2_deps="mips"
2475 mips32r5_deps="mips"
2476 mips32r6_deps="mips"
2477 mips64r2_deps="mips"
2478 mips64r6_deps="mips"
2479 mipsfpu_deps="mips"
2480 mipsdsp_deps="mips"
2481 mipsdspr2_deps="mips"
2482 mmi_deps="mips"
2483 msa_deps="mipsfpu"
2484
2485 cpunop_deps="i686"
2486 x86_64_select="i686"
2487 x86_64_suggest="fast_cmov"
2488
2489 amd3dnow_deps="mmx"
2490 amd3dnowext_deps="amd3dnow"
2491 i686_deps="x86"
2492 mmx_deps="x86"
2493 mmxext_deps="mmx"
2494 sse_deps="mmxext"
2495 sse2_deps="sse"
2496 sse3_deps="sse2"
2497 ssse3_deps="sse3"
2498 sse4_deps="ssse3"
2499 sse42_deps="sse4"
2500 aesni_deps="sse42"
2501 avx_deps="sse42"
2502 xop_deps="avx"
2503 fma3_deps="avx"
2504 fma4_deps="avx"
2505 avx2_deps="avx"
2506 avx512_deps="avx2"
2507
2508 mmx_external_deps="x86asm"
2509 mmx_inline_deps="inline_asm x86"
2510 mmx_suggest="mmx_external mmx_inline"
2511
2512 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2513     eval dep=\$${ext}_deps
2514     eval ${ext}_external_deps='"${dep}_external"'
2515     eval ${ext}_inline_deps='"${dep}_inline"'
2516     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2517 done
2518
2519 aligned_stack_if_any="aarch64 ppc x86"
2520 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2521 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2522 fast_unaligned_if_any="aarch64 ppc x86"
2523 simd_align_16_if_any="altivec neon sse"
2524 simd_align_32_if_any="avx"
2525 simd_align_64_if_any="avx512"
2526
2527 # system capabilities
2528 linux_perf_deps="linux_perf_event_h"
2529 symver_if_any="symver_asm_label symver_gnu_asm"
2530 valgrind_backtrace_conflict="optimizations"
2531 valgrind_backtrace_deps="valgrind_valgrind_h"
2532
2533 # threading support
2534 atomics_gcc_if="sync_val_compare_and_swap"
2535 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2536 atomics_win32_if="MemoryBarrier"
2537 atomics_native_if_any="$ATOMICS_LIST"
2538 w32threads_deps="atomics_native"
2539 threads_if_any="$THREADS_LIST"
2540
2541 # subsystems
2542 cbs_av1_select="cbs"
2543 cbs_h264_select="cbs golomb"
2544 cbs_h265_select="cbs golomb"
2545 cbs_jpeg_select="cbs"
2546 cbs_mpeg2_select="cbs"
2547 cbs_vp9_select="cbs"
2548 dct_select="rdft"
2549 dirac_parse_select="golomb"
2550 dnn_suggest="libtensorflow"
2551 error_resilience_select="me_cmp"
2552 faandct_deps="faan"
2553 faandct_select="fdctdsp"
2554 faanidct_deps="faan"
2555 faanidct_select="idctdsp"
2556 h264dsp_select="startcode"
2557 hevcparse_select="golomb"
2558 frame_thread_encoder_deps="encoders threads"
2559 intrax8_select="blockdsp idctdsp"
2560 mdct_select="fft"
2561 mdct15_select="fft"
2562 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2563 mpeg_er_select="error_resilience"
2564 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2565 mpegaudiodsp_select="dct"
2566 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2567 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2568 vc1dsp_select="h264chroma qpeldsp startcode"
2569 rdft_select="fft"
2570
2571 # decoders / encoders
2572 aac_decoder_select="adts_header mdct15 mdct sinewin"
2573 aac_fixed_decoder_select="adts_header mdct sinewin"
2574 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2575 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2576 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2577 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2578 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2579 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2580 adpcm_g722_decoder_select="g722dsp"
2581 adpcm_g722_encoder_select="g722dsp"
2582 aic_decoder_select="golomb idctdsp"
2583 alac_encoder_select="lpc"
2584 als_decoder_select="bswapdsp"
2585 amrnb_decoder_select="lsp"
2586 amrwb_decoder_select="lsp"
2587 amv_decoder_select="sp5x_decoder exif"
2588 amv_encoder_select="jpegtables mpegvideoenc"
2589 ape_decoder_select="bswapdsp llauddsp"
2590 apng_decoder_deps="zlib"
2591 apng_encoder_deps="zlib"
2592 apng_encoder_select="llvidencdsp"
2593 aptx_decoder_select="audio_frame_queue"
2594 aptx_encoder_select="audio_frame_queue"
2595 aptx_hd_decoder_select="audio_frame_queue"
2596 aptx_hd_encoder_select="audio_frame_queue"
2597 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2598 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2599 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2600 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2601 atrac1_decoder_select="mdct sinewin"
2602 atrac3_decoder_select="mdct"
2603 atrac3p_decoder_select="mdct sinewin"
2604 atrac9_decoder_select="mdct"
2605 avrn_decoder_select="exif jpegtables"
2606 bink_decoder_select="blockdsp hpeldsp"
2607 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2608 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2609 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2610 clearvideo_decoder_select="idctdsp"
2611 cllc_decoder_select="bswapdsp"
2612 comfortnoise_encoder_select="lpc"
2613 cook_decoder_select="audiodsp mdct sinewin"
2614 cscd_decoder_select="lzo"
2615 cscd_decoder_suggest="zlib"
2616 dca_decoder_select="mdct"
2617 dds_decoder_select="texturedsp"
2618 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2619 dnxhd_decoder_select="blockdsp idctdsp"
2620 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2621 dolby_e_decoder_select="mdct"
2622 dvvideo_decoder_select="dvprofile idctdsp"
2623 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2624 dxa_decoder_deps="zlib"
2625 dxv_decoder_select="lzf texturedsp"
2626 eac3_decoder_select="ac3_decoder"
2627 eac3_encoder_select="ac3_encoder"
2628 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2629 eatgq_decoder_select="aandcttables"
2630 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2631 exr_decoder_deps="zlib"
2632 ffv1_decoder_select="rangecoder"
2633 ffv1_encoder_select="rangecoder"
2634 ffvhuff_decoder_select="huffyuv_decoder"
2635 ffvhuff_encoder_select="huffyuv_encoder"
2636 fic_decoder_select="golomb"
2637 flac_decoder_select="flacdsp"
2638 flac_encoder_select="bswapdsp flacdsp lpc"
2639 flashsv2_decoder_deps="zlib"
2640 flashsv2_encoder_deps="zlib"
2641 flashsv_decoder_deps="zlib"
2642 flashsv_encoder_deps="zlib"
2643 flv_decoder_select="h263_decoder"
2644 flv_encoder_select="h263_encoder"
2645 fourxm_decoder_select="blockdsp bswapdsp"
2646 fraps_decoder_select="bswapdsp huffman"
2647 g2m_decoder_deps="zlib"
2648 g2m_decoder_select="blockdsp idctdsp jpegtables"
2649 g729_decoder_select="audiodsp"
2650 h261_decoder_select="mpegvideo"
2651 h261_encoder_select="mpegvideoenc"
2652 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2653 h263_encoder_select="h263dsp mpegvideoenc"
2654 h263i_decoder_select="h263_decoder"
2655 h263p_decoder_select="h263_decoder"
2656 h263p_encoder_select="h263_encoder"
2657 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2658 h264_decoder_suggest="error_resilience"
2659 hap_decoder_select="snappy texturedsp"
2660 hap_encoder_deps="libsnappy"
2661 hap_encoder_select="texturedspenc"
2662 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2663 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2664 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2665 iac_decoder_select="imc_decoder"
2666 imc_decoder_select="bswapdsp fft mdct sinewin"
2667 indeo3_decoder_select="hpeldsp"
2668 indeo4_decoder_select="ividsp"
2669 indeo5_decoder_select="ividsp"
2670 interplay_video_decoder_select="hpeldsp"
2671 jpegls_decoder_select="mjpeg_decoder"
2672 jv_decoder_select="blockdsp"
2673 lagarith_decoder_select="llviddsp"
2674 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2675 magicyuv_decoder_select="llviddsp"
2676 magicyuv_encoder_select="llvidencdsp"
2677 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2678 metasound_decoder_select="lsp mdct sinewin"
2679 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2680 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2681 mjpeg_encoder_select="jpegtables mpegvideoenc"
2682 mjpegb_decoder_select="mjpeg_decoder"
2683 mlp_decoder_select="mlp_parser"
2684 mlp_encoder_select="lpc"
2685 motionpixels_decoder_select="bswapdsp"
2686 mp1_decoder_select="mpegaudio"
2687 mp1float_decoder_select="mpegaudio"
2688 mp2_decoder_select="mpegaudio"
2689 mp2float_decoder_select="mpegaudio"
2690 mp3_decoder_select="mpegaudio"
2691 mp3adu_decoder_select="mpegaudio"
2692 mp3adufloat_decoder_select="mpegaudio"
2693 mp3float_decoder_select="mpegaudio"
2694 mp3on4_decoder_select="mpegaudio"
2695 mp3on4float_decoder_select="mpegaudio"
2696 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2697 mpc8_decoder_select="mpegaudiodsp"
2698 mpegvideo_decoder_select="mpegvideo"
2699 mpeg1video_decoder_select="mpegvideo"
2700 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2701 mpeg2video_decoder_select="mpegvideo"
2702 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2703 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2704 mpeg4_encoder_select="h263_encoder"
2705 msa1_decoder_select="mss34dsp"
2706 mscc_decoder_deps="zlib"
2707 msmpeg4v1_decoder_select="h263_decoder"
2708 msmpeg4v2_decoder_select="h263_decoder"
2709 msmpeg4v2_encoder_select="h263_encoder"
2710 msmpeg4v3_decoder_select="h263_decoder"
2711 msmpeg4v3_encoder_select="h263_encoder"
2712 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2713 mts2_decoder_select="mss34dsp"
2714 mwsc_decoder_deps="zlib"
2715 mxpeg_decoder_select="mjpeg_decoder"
2716 nellymoser_decoder_select="mdct sinewin"
2717 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2718 nuv_decoder_select="idctdsp lzo"
2719 on2avc_decoder_select="mdct"
2720 opus_decoder_deps="swresample"
2721 opus_decoder_select="mdct15"
2722 opus_encoder_select="audio_frame_queue mdct15"
2723 png_decoder_deps="zlib"
2724 png_encoder_deps="zlib"
2725 png_encoder_select="llvidencdsp"
2726 prores_decoder_select="blockdsp idctdsp"
2727 prores_encoder_select="fdctdsp"
2728 qcelp_decoder_select="lsp"
2729 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2730 ra_144_decoder_select="audiodsp"
2731 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2732 ralf_decoder_select="golomb"
2733 rasc_decoder_deps="zlib"
2734 rawvideo_decoder_select="bswapdsp"
2735 rscc_decoder_deps="zlib"
2736 rtjpeg_decoder_select="me_cmp"
2737 rv10_decoder_select="h263_decoder"
2738 rv10_encoder_select="h263_encoder"
2739 rv20_decoder_select="h263_decoder"
2740 rv20_encoder_select="h263_encoder"
2741 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2742 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2743 screenpresso_decoder_deps="zlib"
2744 shorten_decoder_select="bswapdsp"
2745 sipr_decoder_select="lsp"
2746 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2747 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2748 sonic_decoder_select="golomb rangecoder"
2749 sonic_encoder_select="golomb rangecoder"
2750 sonic_ls_encoder_select="golomb rangecoder"
2751 sp5x_decoder_select="mjpeg_decoder"
2752 speedhq_decoder_select="mpegvideo"
2753 srgc_decoder_deps="zlib"
2754 svq1_decoder_select="hpeldsp"
2755 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2756 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2757 svq3_decoder_suggest="zlib"
2758 tak_decoder_select="audiodsp"
2759 tdsc_decoder_deps="zlib"
2760 tdsc_decoder_select="mjpeg_decoder"
2761 theora_decoder_select="vp3_decoder"
2762 thp_decoder_select="mjpeg_decoder"
2763 tiff_decoder_suggest="zlib lzma"
2764 tiff_encoder_suggest="zlib"
2765 truehd_decoder_select="mlp_parser"
2766 truehd_encoder_select="lpc"
2767 truemotion2_decoder_select="bswapdsp"
2768 truespeech_decoder_select="bswapdsp"
2769 tscc_decoder_deps="zlib"
2770 twinvq_decoder_select="mdct lsp sinewin"
2771 txd_decoder_select="texturedsp"
2772 utvideo_decoder_select="bswapdsp llviddsp"
2773 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2774 vble_decoder_select="llviddsp"
2775 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2776 vc1image_decoder_select="vc1_decoder"
2777 vorbis_decoder_select="mdct"
2778 vorbis_encoder_select="audio_frame_queue mdct"
2779 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2780 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2781 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2782 vp6a_decoder_select="vp6_decoder"
2783 vp6f_decoder_select="vp6_decoder"
2784 vp7_decoder_select="h264pred videodsp vp8dsp"
2785 vp8_decoder_select="h264pred videodsp vp8dsp"
2786 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2787 wcmv_decoder_deps="zlib"
2788 webp_decoder_select="vp8_decoder exif"
2789 wmalossless_decoder_select="llauddsp"
2790 wmapro_decoder_select="mdct sinewin wma_freqs"
2791 wmav1_decoder_select="mdct sinewin wma_freqs"
2792 wmav1_encoder_select="mdct sinewin wma_freqs"
2793 wmav2_decoder_select="mdct sinewin wma_freqs"
2794 wmav2_encoder_select="mdct sinewin wma_freqs"
2795 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2796 wmv1_decoder_select="h263_decoder"
2797 wmv1_encoder_select="h263_encoder"
2798 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2799 wmv2_encoder_select="h263_encoder wmv2dsp"
2800 wmv3_decoder_select="vc1_decoder"
2801 wmv3image_decoder_select="wmv3_decoder"
2802 xma1_decoder_select="wmapro_decoder"
2803 xma2_decoder_select="wmapro_decoder"
2804 zerocodec_decoder_deps="zlib"
2805 zlib_decoder_deps="zlib"
2806 zlib_encoder_deps="zlib"
2807 zmbv_decoder_deps="zlib"
2808 zmbv_encoder_deps="zlib"
2809
2810 # hardware accelerators
2811 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2812 cuda_deps="ffnvcodec"
2813 cuvid_deps="ffnvcodec"
2814 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2815 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2816 ffnvcodec_deps_any="libdl LoadLibrary"
2817 nvdec_deps="ffnvcodec"
2818 vaapi_x11_deps="xlib"
2819 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2820 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2821 xvmc_deps="X11_extensions_XvMClib_h"
2822
2823 h263_vaapi_hwaccel_deps="vaapi"
2824 h263_vaapi_hwaccel_select="h263_decoder"
2825 h263_videotoolbox_hwaccel_deps="videotoolbox"
2826 h263_videotoolbox_hwaccel_select="h263_decoder"
2827 h264_d3d11va_hwaccel_deps="d3d11va"
2828 h264_d3d11va_hwaccel_select="h264_decoder"
2829 h264_d3d11va2_hwaccel_deps="d3d11va"
2830 h264_d3d11va2_hwaccel_select="h264_decoder"
2831 h264_dxva2_hwaccel_deps="dxva2"
2832 h264_dxva2_hwaccel_select="h264_decoder"
2833 h264_nvdec_hwaccel_deps="nvdec"
2834 h264_nvdec_hwaccel_select="h264_decoder"
2835 h264_vaapi_hwaccel_deps="vaapi"
2836 h264_vaapi_hwaccel_select="h264_decoder"
2837 h264_vdpau_hwaccel_deps="vdpau"
2838 h264_vdpau_hwaccel_select="h264_decoder"
2839 h264_videotoolbox_hwaccel_deps="videotoolbox"
2840 h264_videotoolbox_hwaccel_select="h264_decoder"
2841 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2842 hevc_d3d11va_hwaccel_select="hevc_decoder"
2843 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2844 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2845 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2846 hevc_dxva2_hwaccel_select="hevc_decoder"
2847 hevc_nvdec_hwaccel_deps="nvdec"
2848 hevc_nvdec_hwaccel_select="hevc_decoder"
2849 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2850 hevc_vaapi_hwaccel_select="hevc_decoder"
2851 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2852 hevc_vdpau_hwaccel_select="hevc_decoder"
2853 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2854 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2855 mjpeg_nvdec_hwaccel_deps="nvdec"
2856 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2857 mjpeg_vaapi_hwaccel_deps="vaapi"
2858 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2859 mpeg_xvmc_hwaccel_deps="xvmc"
2860 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2861 mpeg1_nvdec_hwaccel_deps="nvdec"
2862 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2863 mpeg1_vdpau_hwaccel_deps="vdpau"
2864 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2865 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2866 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2867 mpeg1_xvmc_hwaccel_deps="xvmc"
2868 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2869 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2870 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2871 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2872 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2873 mpeg2_dxva2_hwaccel_deps="dxva2"
2874 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_nvdec_hwaccel_deps="nvdec"
2876 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_vaapi_hwaccel_deps="vaapi"
2878 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2879 mpeg2_vdpau_hwaccel_deps="vdpau"
2880 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2881 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2882 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2883 mpeg2_xvmc_hwaccel_deps="xvmc"
2884 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2885 mpeg4_nvdec_hwaccel_deps="nvdec"
2886 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2887 mpeg4_vaapi_hwaccel_deps="vaapi"
2888 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2889 mpeg4_vdpau_hwaccel_deps="vdpau"
2890 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2891 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2892 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2893 vc1_d3d11va_hwaccel_deps="d3d11va"
2894 vc1_d3d11va_hwaccel_select="vc1_decoder"
2895 vc1_d3d11va2_hwaccel_deps="d3d11va"
2896 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2897 vc1_dxva2_hwaccel_deps="dxva2"
2898 vc1_dxva2_hwaccel_select="vc1_decoder"
2899 vc1_nvdec_hwaccel_deps="nvdec"
2900 vc1_nvdec_hwaccel_select="vc1_decoder"
2901 vc1_vaapi_hwaccel_deps="vaapi"
2902 vc1_vaapi_hwaccel_select="vc1_decoder"
2903 vc1_vdpau_hwaccel_deps="vdpau"
2904 vc1_vdpau_hwaccel_select="vc1_decoder"
2905 vp8_nvdec_hwaccel_deps="nvdec"
2906 vp8_nvdec_hwaccel_select="vp8_decoder"
2907 vp8_vaapi_hwaccel_deps="vaapi"
2908 vp8_vaapi_hwaccel_select="vp8_decoder"
2909 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2910 vp9_d3d11va_hwaccel_select="vp9_decoder"
2911 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2912 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2913 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2914 vp9_dxva2_hwaccel_select="vp9_decoder"
2915 vp9_nvdec_hwaccel_deps="nvdec"
2916 vp9_nvdec_hwaccel_select="vp9_decoder"
2917 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2918 vp9_vaapi_hwaccel_select="vp9_decoder"
2919 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2920 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2921 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2922 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2923 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2924 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2925
2926 # hardware-accelerated codecs
2927 omx_deps="libdl pthreads"
2928 omx_rpi_select="omx"
2929 qsv_deps="libmfx"
2930 qsvdec_select="qsv"
2931 qsvenc_select="qsv"
2932 qsvvpp_select="qsv"
2933 vaapi_encode_deps="vaapi"
2934 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2935
2936 hwupload_cuda_filter_deps="ffnvcodec"
2937 scale_npp_filter_deps="ffnvcodec libnpp"
2938 scale_cuda_filter_deps="cuda_sdk"
2939 thumbnail_cuda_filter_deps="cuda_sdk"
2940 transpose_npp_filter_deps="ffnvcodec libnpp"
2941
2942 amf_deps_any="libdl LoadLibrary"
2943 nvenc_deps="ffnvcodec"
2944 nvenc_deps_any="libdl LoadLibrary"
2945 nvenc_encoder_deps="nvenc"
2946
2947 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2948 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2949 h264_amf_encoder_deps="amf"
2950 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2951 h264_cuvid_decoder_deps="cuvid"
2952 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2953 h264_mediacodec_decoder_deps="mediacodec"
2954 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2955 h264_mmal_decoder_deps="mmal"
2956 h264_nvenc_encoder_deps="nvenc"
2957 h264_omx_encoder_deps="omx"
2958 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2959 h264_qsv_encoder_select="qsvenc"
2960 h264_rkmpp_decoder_deps="rkmpp"
2961 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2962 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2963 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2964 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2965 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2966 hevc_amf_encoder_deps="amf"
2967 hevc_cuvid_decoder_deps="cuvid"
2968 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2969 hevc_mediacodec_decoder_deps="mediacodec"
2970 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2971 hevc_nvenc_encoder_deps="nvenc"
2972 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2973 hevc_qsv_encoder_select="hevcparse qsvenc"
2974 hevc_rkmpp_decoder_deps="rkmpp"
2975 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2976 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2977 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2978 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2979 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2980 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2981 mjpeg_cuvid_decoder_deps="cuvid"
2982 mjpeg_qsv_encoder_deps="libmfx"
2983 mjpeg_qsv_encoder_select="qsvenc"
2984 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2985 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2986 mpeg1_cuvid_decoder_deps="cuvid"
2987 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2988 mpeg2_crystalhd_decoder_select="crystalhd"
2989 mpeg2_cuvid_decoder_deps="cuvid"
2990 mpeg2_mmal_decoder_deps="mmal"
2991 mpeg2_mediacodec_decoder_deps="mediacodec"
2992 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2993 mpeg2_qsv_encoder_select="qsvenc"
2994 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2995 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2996 mpeg4_crystalhd_decoder_select="crystalhd"
2997 mpeg4_cuvid_decoder_deps="cuvid"
2998 mpeg4_mediacodec_decoder_deps="mediacodec"
2999 mpeg4_mmal_decoder_deps="mmal"
3000 mpeg4_omx_encoder_deps="omx"
3001 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3002 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3003 msmpeg4_crystalhd_decoder_select="crystalhd"
3004 nvenc_h264_encoder_select="h264_nvenc_encoder"
3005 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3006 vc1_crystalhd_decoder_select="crystalhd"
3007 vc1_cuvid_decoder_deps="cuvid"
3008 vc1_mmal_decoder_deps="mmal"
3009 vc1_qsv_decoder_select="qsvdec vc1_parser"
3010 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3011 vp8_cuvid_decoder_deps="cuvid"
3012 vp8_mediacodec_decoder_deps="mediacodec"
3013 vp8_qsv_decoder_select="qsvdec vp8_parser"
3014 vp8_rkmpp_decoder_deps="rkmpp"
3015 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3016 vp8_vaapi_encoder_select="vaapi_encode"
3017 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3018 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3019 vp9_cuvid_decoder_deps="cuvid"
3020 vp9_mediacodec_decoder_deps="mediacodec"
3021 vp9_rkmpp_decoder_deps="rkmpp"
3022 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3023 vp9_vaapi_encoder_select="vaapi_encode"
3024 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3025 wmv3_crystalhd_decoder_select="crystalhd"
3026
3027 # parsers
3028 aac_parser_select="adts_header"
3029 av1_parser_select="cbs_av1"
3030 h264_parser_select="golomb h264dsp h264parse"
3031 hevc_parser_select="hevcparse"
3032 mpegaudio_parser_select="mpegaudioheader"
3033 mpegvideo_parser_select="mpegvideo"
3034 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3035 vc1_parser_select="vc1dsp"
3036
3037 # bitstream_filters
3038 aac_adtstoasc_bsf_select="adts_header"
3039 av1_metadata_bsf_select="cbs_av1"
3040 eac3_core_bsf_select="ac3_parser"
3041 filter_units_bsf_select="cbs"
3042 h264_metadata_bsf_deps="const_nan"
3043 h264_metadata_bsf_select="cbs_h264"
3044 h264_redundant_pps_bsf_select="cbs_h264"
3045 hevc_metadata_bsf_select="cbs_h265"
3046 mjpeg2jpeg_bsf_select="jpegtables"
3047 mpeg2_metadata_bsf_select="cbs_mpeg2"
3048 trace_headers_bsf_select="cbs"
3049 truehd_core_bsf_select="mlp_parser"
3050 vp9_metadata_bsf_select="cbs_vp9"
3051
3052 # external libraries
3053 aac_at_decoder_deps="audiotoolbox"
3054 aac_at_decoder_select="aac_adtstoasc_bsf"
3055 ac3_at_decoder_deps="audiotoolbox"
3056 ac3_at_decoder_select="ac3_parser"
3057 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3058 alac_at_decoder_deps="audiotoolbox"
3059 amr_nb_at_decoder_deps="audiotoolbox"
3060 avisynth_deps_any="libdl LoadLibrary"
3061 avisynth_demuxer_deps="avisynth"
3062 avisynth_demuxer_select="riffdec"
3063 eac3_at_decoder_deps="audiotoolbox"
3064 eac3_at_decoder_select="ac3_parser"
3065 gsm_ms_at_decoder_deps="audiotoolbox"
3066 ilbc_at_decoder_deps="audiotoolbox"
3067 mp1_at_decoder_deps="audiotoolbox"
3068 mp2_at_decoder_deps="audiotoolbox"
3069 mp3_at_decoder_deps="audiotoolbox"
3070 mp1_at_decoder_select="mpegaudioheader"
3071 mp2_at_decoder_select="mpegaudioheader"
3072 mp3_at_decoder_select="mpegaudioheader"
3073 pcm_alaw_at_decoder_deps="audiotoolbox"
3074 pcm_mulaw_at_decoder_deps="audiotoolbox"
3075 qdmc_at_decoder_deps="audiotoolbox"
3076 qdm2_at_decoder_deps="audiotoolbox"
3077 aac_at_encoder_deps="audiotoolbox"
3078 aac_at_encoder_select="audio_frame_queue"
3079 alac_at_encoder_deps="audiotoolbox"
3080 alac_at_encoder_select="audio_frame_queue"
3081 ilbc_at_encoder_deps="audiotoolbox"
3082 ilbc_at_encoder_select="audio_frame_queue"
3083 pcm_alaw_at_encoder_deps="audiotoolbox"
3084 pcm_alaw_at_encoder_select="audio_frame_queue"
3085 pcm_mulaw_at_encoder_deps="audiotoolbox"
3086 pcm_mulaw_at_encoder_select="audio_frame_queue"
3087 chromaprint_muxer_deps="chromaprint"
3088 h264_videotoolbox_encoder_deps="pthreads"
3089 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3090 hevc_videotoolbox_encoder_deps="pthreads"
3091 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3092 libaom_av1_decoder_deps="libaom"
3093 libaom_av1_encoder_deps="libaom"
3094 libaom_av1_encoder_select="extract_extradata_bsf"
3095 libcelt_decoder_deps="libcelt"
3096 libcodec2_decoder_deps="libcodec2"
3097 libcodec2_encoder_deps="libcodec2"
3098 libdav1d_decoder_deps="libdav1d"
3099 libdavs2_decoder_deps="libdavs2"
3100 libfdk_aac_decoder_deps="libfdk_aac"
3101 libfdk_aac_encoder_deps="libfdk_aac"
3102 libfdk_aac_encoder_select="audio_frame_queue"
3103 libgme_demuxer_deps="libgme"
3104 libgsm_decoder_deps="libgsm"
3105 libgsm_encoder_deps="libgsm"
3106 libgsm_ms_decoder_deps="libgsm"
3107 libgsm_ms_encoder_deps="libgsm"
3108 libilbc_decoder_deps="libilbc"
3109 libilbc_encoder_deps="libilbc"
3110 libkvazaar_encoder_deps="libkvazaar"
3111 libmodplug_demuxer_deps="libmodplug"
3112 libmp3lame_encoder_deps="libmp3lame"
3113 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3114 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3115 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3116 libopencore_amrnb_encoder_select="audio_frame_queue"
3117 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3118 libopenh264_decoder_deps="libopenh264"
3119 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3120 libopenh264_encoder_deps="libopenh264"
3121 libopenjpeg_decoder_deps="libopenjpeg"
3122 libopenjpeg_encoder_deps="libopenjpeg"
3123 libopenmpt_demuxer_deps="libopenmpt"
3124 libopus_decoder_deps="libopus"
3125 libopus_encoder_deps="libopus"
3126 libopus_encoder_select="audio_frame_queue"
3127 librsvg_decoder_deps="librsvg"
3128 libshine_encoder_deps="libshine"
3129 libshine_encoder_select="audio_frame_queue"
3130 libspeex_decoder_deps="libspeex"
3131 libspeex_encoder_deps="libspeex"
3132 libspeex_encoder_select="audio_frame_queue"
3133 libtheora_encoder_deps="libtheora"
3134 libtwolame_encoder_deps="libtwolame"
3135 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3136 libvorbis_decoder_deps="libvorbis"
3137 libvorbis_encoder_deps="libvorbis libvorbisenc"
3138 libvorbis_encoder_select="audio_frame_queue"
3139 libvpx_vp8_decoder_deps="libvpx"
3140 libvpx_vp8_encoder_deps="libvpx"
3141 libvpx_vp9_decoder_deps="libvpx"
3142 libvpx_vp9_encoder_deps="libvpx"
3143 libwavpack_encoder_deps="libwavpack"
3144 libwavpack_encoder_select="audio_frame_queue"
3145 libwebp_encoder_deps="libwebp"
3146 libwebp_anim_encoder_deps="libwebp"
3147 libx262_encoder_deps="libx262"
3148 libx264_encoder_deps="libx264"
3149 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3150 libx264rgb_encoder_select="libx264_encoder"
3151 libx265_encoder_deps="libx265"
3152 libxavs_encoder_deps="libxavs"
3153 libxavs2_encoder_deps="libxavs2"
3154 libxvid_encoder_deps="libxvid"
3155 libzvbi_teletext_decoder_deps="libzvbi"
3156 vapoursynth_demuxer_deps="vapoursynth"
3157 videotoolbox_suggest="coreservices"
3158 videotoolbox_deps="corefoundation coremedia corevideo"
3159 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3160
3161 # demuxers / muxers
3162 ac3_demuxer_select="ac3_parser"
3163 aiff_muxer_select="iso_media"
3164 asf_demuxer_select="riffdec"
3165 asf_o_demuxer_select="riffdec"
3166 asf_muxer_select="riffenc"
3167 asf_stream_muxer_select="asf_muxer"
3168 avi_demuxer_select="iso_media riffdec exif"
3169 avi_muxer_select="riffenc"
3170 caf_demuxer_select="iso_media riffdec"
3171 caf_muxer_select="iso_media"
3172 dash_muxer_select="mp4_muxer"
3173 dash_demuxer_deps="libxml2"
3174 dirac_demuxer_select="dirac_parser"
3175 dts_demuxer_select="dca_parser"
3176 dtshd_demuxer_select="dca_parser"
3177 dv_demuxer_select="dvprofile"
3178 dv_muxer_select="dvprofile"
3179 dxa_demuxer_select="riffdec"
3180 eac3_demuxer_select="ac3_parser"
3181 f4v_muxer_select="mov_muxer"
3182 fifo_muxer_deps="threads"
3183 flac_demuxer_select="flac_parser"
3184 hds_muxer_select="flv_muxer"
3185 hls_muxer_select="mpegts_muxer"
3186 hls_muxer_suggest="gcrypt openssl"
3187 image2_alias_pix_demuxer_select="image2_demuxer"
3188 image2_brender_pix_demuxer_select="image2_demuxer"
3189 ipod_muxer_select="mov_muxer"
3190 ismv_muxer_select="mov_muxer"
3191 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3192 matroska_audio_muxer_select="matroska_muxer"
3193 matroska_demuxer_select="iso_media riffdec"
3194 matroska_demuxer_suggest="bzlib lzo zlib"
3195 matroska_muxer_select="iso_media riffenc"
3196 mmf_muxer_select="riffenc"
3197 mov_demuxer_select="iso_media riffdec"
3198 mov_demuxer_suggest="zlib"
3199 mov_muxer_select="iso_media riffenc rtpenc_chain"
3200 mp3_demuxer_select="mpegaudio_parser"
3201 mp3_muxer_select="mpegaudioheader"
3202 mp4_muxer_select="mov_muxer"
3203 mpegts_demuxer_select="iso_media"
3204 mpegts_muxer_select="adts_muxer latm_muxer"
3205 mpegtsraw_demuxer_select="mpegts_demuxer"
3206 mxf_d10_muxer_select="mxf_muxer"
3207 mxf_opatom_muxer_select="mxf_muxer"
3208 nut_muxer_select="riffenc"
3209 nuv_demuxer_select="riffdec"
3210 oga_muxer_select="ogg_muxer"
3211 ogg_demuxer_select="dirac_parse"
3212 ogv_muxer_select="ogg_muxer"
3213 opus_muxer_select="ogg_muxer"
3214 psp_muxer_select="mov_muxer"
3215 rtp_demuxer_select="sdp_demuxer"
3216 rtp_muxer_select="golomb"
3217 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3218 rtsp_demuxer_select="http_protocol rtpdec"
3219 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3220 sap_demuxer_select="sdp_demuxer"
3221 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3222 sdp_demuxer_select="rtpdec"
3223 smoothstreaming_muxer_select="ismv_muxer"
3224 spdif_demuxer_select="adts_header"
3225 spdif_muxer_select="adts_header"
3226 spx_muxer_select="ogg_muxer"
3227 swf_demuxer_suggest="zlib"
3228 tak_demuxer_select="tak_parser"
3229 tg2_muxer_select="mov_muxer"
3230 tgp_muxer_select="mov_muxer"
3231 vobsub_demuxer_select="mpegps_demuxer"
3232 w64_demuxer_select="wav_demuxer"
3233 w64_muxer_select="wav_muxer"
3234 wav_demuxer_select="riffdec"
3235 wav_muxer_select="riffenc"
3236 webm_muxer_select="iso_media riffenc"
3237 webm_dash_manifest_demuxer_select="matroska_demuxer"
3238 wtv_demuxer_select="mpegts_demuxer riffdec"
3239 wtv_muxer_select="mpegts_muxer riffenc"
3240 xmv_demuxer_select="riffdec"
3241 xwma_demuxer_select="riffdec"
3242
3243 # indevs / outdevs
3244 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3245 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3246 alsa_indev_deps="alsa"
3247 alsa_outdev_deps="alsa"
3248 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3249 avfoundation_indev_suggest="coregraphics applicationservices"
3250 avfoundation_indev_extralibs="-framework Foundation"
3251 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3252 caca_outdev_deps="libcaca"
3253 decklink_deps_any="libdl LoadLibrary"
3254 decklink_indev_deps="decklink threads"
3255 decklink_indev_extralibs="-lstdc++"
3256 decklink_outdev_deps="decklink threads"
3257 decklink_outdev_suggest="libklvanc"
3258 decklink_outdev_extralibs="-lstdc++"
3259 libndi_newtek_indev_deps="libndi_newtek"
3260 libndi_newtek_indev_extralibs="-lndi"
3261 libndi_newtek_outdev_deps="libndi_newtek"
3262 libndi_newtek_outdev_extralibs="-lndi"
3263 dshow_indev_deps="IBaseFilter"
3264 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3265 fbdev_indev_deps="linux_fb_h"
3266 fbdev_outdev_deps="linux_fb_h"
3267 gdigrab_indev_deps="CreateDIBSection"
3268 gdigrab_indev_extralibs="-lgdi32"
3269 gdigrab_indev_select="bmp_decoder"
3270 iec61883_indev_deps="libiec61883"
3271 jack_indev_deps="libjack"
3272 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3273 kmsgrab_indev_deps="libdrm"
3274 lavfi_indev_deps="avfilter"
3275 libcdio_indev_deps="libcdio"
3276 libdc1394_indev_deps="libdc1394"
3277 openal_indev_deps="openal"
3278 opengl_outdev_deps="opengl"
3279 opengl_outdev_suggest="sdl2"
3280 oss_indev_deps_any="sys_soundcard_h"
3281 oss_outdev_deps_any="sys_soundcard_h"
3282 pulse_indev_deps="libpulse"
3283 pulse_outdev_deps="libpulse"
3284 sdl2_outdev_deps="sdl2"
3285 sndio_indev_deps="sndio"
3286 sndio_outdev_deps="sndio"
3287 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3288 v4l2_indev_suggest="libv4l2"
3289 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3290 v4l2_outdev_suggest="libv4l2"
3291 vfwcap_indev_deps="vfw32 vfwcap_defines"
3292 xcbgrab_indev_deps="libxcb"
3293 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3294 xv_outdev_deps="xlib"
3295
3296 # protocols
3297 async_protocol_deps="threads"
3298 bluray_protocol_deps="libbluray"
3299 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3300 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3301 ffrtmpcrypt_protocol_select="tcp_protocol"
3302 ffrtmphttp_protocol_conflict="librtmp_protocol"
3303 ffrtmphttp_protocol_select="http_protocol"
3304 ftp_protocol_select="tcp_protocol"
3305 gopher_protocol_select="network"
3306 http_protocol_select="tcp_protocol"
3307 http_protocol_suggest="zlib"
3308 httpproxy_protocol_select="tcp_protocol"
3309 httpproxy_protocol_suggest="zlib"
3310 https_protocol_select="tls_protocol"
3311 https_protocol_suggest="zlib"
3312 icecast_protocol_select="http_protocol"
3313 mmsh_protocol_select="http_protocol"
3314 mmst_protocol_select="network"
3315 rtmp_protocol_conflict="librtmp_protocol"
3316 rtmp_protocol_select="tcp_protocol"
3317 rtmp_protocol_suggest="zlib"
3318 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3319 rtmpe_protocol_suggest="zlib"
3320 rtmps_protocol_conflict="librtmp_protocol"
3321 rtmps_protocol_select="tls_protocol"
3322 rtmps_protocol_suggest="zlib"
3323 rtmpt_protocol_select="ffrtmphttp_protocol"
3324 rtmpt_protocol_suggest="zlib"
3325 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3326 rtmpte_protocol_suggest="zlib"
3327 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3328 rtmpts_protocol_suggest="zlib"
3329 rtp_protocol_select="udp_protocol"
3330 schannel_conflict="openssl gnutls libtls mbedtls"
3331 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3332 sctp_protocol_select="network"
3333 securetransport_conflict="openssl gnutls libtls mbedtls"
3334 srtp_protocol_select="rtp_protocol srtp"
3335 tcp_protocol_select="network"
3336 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3337 tls_protocol_select="tcp_protocol"
3338 udp_protocol_select="network"
3339 udplite_protocol_select="network"
3340 unix_protocol_deps="sys_un_h"
3341 unix_protocol_select="network"
3342
3343 # external library protocols
3344 librtmp_protocol_deps="librtmp"
3345 librtmpe_protocol_deps="librtmp"
3346 librtmps_protocol_deps="librtmp"
3347 librtmpt_protocol_deps="librtmp"
3348 librtmpte_protocol_deps="librtmp"
3349 libsmbclient_protocol_deps="libsmbclient gplv3"
3350 libsrt_protocol_deps="libsrt"
3351 libsrt_protocol_select="network"
3352 libssh_protocol_deps="libssh"
3353 libtls_conflict="openssl gnutls mbedtls"
3354
3355 # filters
3356 afftdn_filter_deps="avcodec"
3357 afftdn_filter_select="fft"
3358 afftfilt_filter_deps="avcodec"
3359 afftfilt_filter_select="fft"
3360 afir_filter_deps="avcodec"
3361 afir_filter_select="fft"
3362 amovie_filter_deps="avcodec avformat"
3363 aresample_filter_deps="swresample"
3364 ass_filter_deps="libass"
3365 atempo_filter_deps="avcodec"
3366 atempo_filter_select="rdft"
3367 avgblur_opencl_filter_deps="opencl"
3368 azmq_filter_deps="libzmq"
3369 blackframe_filter_deps="gpl"
3370 bm3d_filter_deps="avcodec"
3371 bm3d_filter_select="dct"
3372 boxblur_filter_deps="gpl"
3373 boxblur_opencl_filter_deps="opencl gpl"
3374 bs2b_filter_deps="libbs2b"
3375 colormatrix_filter_deps="gpl"
3376 convolution_opencl_filter_deps="opencl"
3377 convolve_filter_deps="avcodec"
3378 convolve_filter_select="fft"
3379 coreimage_filter_deps="coreimage appkit"
3380 coreimage_filter_extralibs="-framework OpenGL"
3381 coreimagesrc_filter_deps="coreimage appkit"
3382 coreimagesrc_filter_extralibs="-framework OpenGL"
3383 cover_rect_filter_deps="avcodec avformat gpl"
3384 cropdetect_filter_deps="gpl"
3385 deconvolve_filter_deps="avcodec"
3386 deconvolve_filter_select="fft"
3387 deinterlace_qsv_filter_deps="libmfx"
3388 deinterlace_vaapi_filter_deps="vaapi"
3389 delogo_filter_deps="gpl"
3390 denoise_vaapi_filter_deps="vaapi"
3391 deshake_filter_select="pixelutils"
3392 dilation_opencl_filter_deps="opencl"
3393 drawtext_filter_deps="libfreetype"
3394 drawtext_filter_suggest="libfontconfig libfribidi"
3395 elbg_filter_deps="avcodec"
3396 eq_filter_deps="gpl"
3397 erosion_opencl_filter_deps="opencl"
3398 fftfilt_filter_deps="avcodec"
3399 fftfilt_filter_select="rdft"
3400 fftdnoiz_filter_deps="avcodec"
3401 fftdnoiz_filter_select="fft"
3402 find_rect_filter_deps="avcodec avformat gpl"
3403 firequalizer_filter_deps="avcodec"
3404 firequalizer_filter_select="rdft"
3405 flite_filter_deps="libflite"
3406 framerate_filter_select="scene_sad"
3407 freezedetect_filter_select="scene_sad"
3408 frei0r_filter_deps="frei0r libdl"
3409 frei0r_src_filter_deps="frei0r libdl"
3410 fspp_filter_deps="gpl"
3411 geq_filter_deps="gpl"
3412 histeq_filter_deps="gpl"
3413 hqdn3d_filter_deps="gpl"
3414 interlace_filter_deps="gpl"
3415 kerndeint_filter_deps="gpl"
3416 ladspa_filter_deps="ladspa libdl"
3417 lensfun_filter_deps="liblensfun version3"
3418 lv2_filter_deps="lv2"
3419 mcdeint_filter_deps="avcodec gpl"
3420 movie_filter_deps="avcodec avformat"
3421 mpdecimate_filter_deps="gpl"
3422 mpdecimate_filter_select="pixelutils"
3423 minterpolate_filter_select="scene_sad"
3424 mptestsrc_filter_deps="gpl"
3425 negate_filter_deps="lut_filter"
3426 nnedi_filter_deps="gpl"
3427 ocr_filter_deps="libtesseract"
3428 ocv_filter_deps="libopencv"
3429 openclsrc_filter_deps="opencl"
3430 overlay_opencl_filter_deps="opencl"
3431 overlay_qsv_filter_deps="libmfx"
3432 overlay_qsv_filter_select="qsvvpp"
3433 owdenoise_filter_deps="gpl"
3434 pan_filter_deps="swresample"
3435 perspective_filter_deps="gpl"
3436 phase_filter_deps="gpl"
3437 pp7_filter_deps="gpl"
3438 pp_filter_deps="gpl postproc"
3439 prewitt_opencl_filter_deps="opencl"
3440 procamp_vaapi_filter_deps="vaapi"
3441 program_opencl_filter_deps="opencl"
3442 pullup_filter_deps="gpl"
3443 removelogo_filter_deps="avcodec avformat swscale"
3444 repeatfields_filter_deps="gpl"
3445 resample_filter_deps="avresample"
3446 roberts_opencl_filter_deps="opencl"
3447 rubberband_filter_deps="librubberband"
3448 sab_filter_deps="gpl swscale"
3449 scale2ref_filter_deps="swscale"
3450 scale_filter_deps="swscale"
3451 scale_qsv_filter_deps="libmfx"
3452 select_filter_select="scene_sad"
3453 sharpness_vaapi_filter_deps="vaapi"
3454 showcqt_filter_deps="avcodec avformat swscale"
3455 showcqt_filter_suggest="libfontconfig libfreetype"
3456 showcqt_filter_select="fft"
3457 showfreqs_filter_deps="avcodec"
3458 showfreqs_filter_select="fft"
3459 showspectrum_filter_deps="avcodec"
3460 showspectrum_filter_select="fft"
3461 showspectrumpic_filter_deps="avcodec"
3462 showspectrumpic_filter_select="fft"
3463 signature_filter_deps="gpl avcodec avformat"
3464 smartblur_filter_deps="gpl swscale"
3465 sobel_opencl_filter_deps="opencl"
3466 sofalizer_filter_deps="libmysofa avcodec"
3467 sofalizer_filter_select="fft"
3468 spectrumsynth_filter_deps="avcodec"
3469 spectrumsynth_filter_select="fft"
3470 spp_filter_deps="gpl avcodec"
3471 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3472 sr_filter_deps="avformat swscale"
3473 sr_filter_select="dnn"
3474 stereo3d_filter_deps="gpl"
3475 subtitles_filter_deps="avformat avcodec libass"
3476 super2xsai_filter_deps="gpl"
3477 pixfmts_super2xsai_test_deps="super2xsai_filter"
3478 tinterlace_filter_deps="gpl"
3479 tinterlace_merge_test_deps="tinterlace_filter"
3480 tinterlace_pad_test_deps="tinterlace_filter"
3481 tonemap_filter_deps="const_nan"
3482 tonemap_opencl_filter_deps="opencl const_nan"
3483 unsharp_opencl_filter_deps="opencl"
3484 uspp_filter_deps="gpl avcodec"
3485 vaguedenoiser_filter_deps="gpl"
3486 vidstabdetect_filter_deps="libvidstab"
3487 vidstabtransform_filter_deps="libvidstab"
3488 libvmaf_filter_deps="libvmaf pthreads"
3489 zmq_filter_deps="libzmq"
3490 zoompan_filter_deps="swscale"
3491 zscale_filter_deps="libzimg const_nan"
3492 scale_vaapi_filter_deps="vaapi"
3493 vpp_qsv_filter_deps="libmfx"
3494 vpp_qsv_filter_select="qsvvpp"
3495 yadif_cuda_filter_deps="cuda_sdk"
3496
3497 # examples
3498 avio_dir_cmd_deps="avformat avutil"
3499 avio_reading_deps="avformat avcodec avutil"
3500 decode_audio_example_deps="avcodec avutil"
3501 decode_video_example_deps="avcodec avutil"
3502 demuxing_decoding_example_deps="avcodec avformat avutil"
3503 encode_audio_example_deps="avcodec avutil"
3504 encode_video_example_deps="avcodec avutil"
3505 extract_mvs_example_deps="avcodec avformat avutil"
3506 filter_audio_example_deps="avfilter avutil"
3507 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3508 filtering_video_example_deps="avfilter avcodec avformat avutil"
3509 http_multiclient_example_deps="avformat avutil fork"
3510 hw_decode_example_deps="avcodec avformat avutil"
3511 metadata_example_deps="avformat avutil"
3512 muxing_example_deps="avcodec avformat avutil swscale"
3513 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3514 remuxing_example_deps="avcodec avformat avutil"
3515 resampling_audio_example_deps="avutil swresample"
3516 scaling_video_example_deps="avutil swscale"
3517 transcode_aac_example_deps="avcodec avformat swresample"
3518 transcoding_example_deps="avfilter avcodec avformat avutil"
3519 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3520 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3521
3522 # EXTRALIBS_LIST
3523 cpu_init_extralibs="pthreads_extralibs"
3524 cws2fws_extralibs="zlib_extralibs"
3525
3526 # libraries, in any order
3527 avcodec_deps="avutil"
3528 avcodec_suggest="libm"
3529 avcodec_select="null_bsf"
3530 avdevice_deps="avformat avcodec avutil"
3531 avdevice_suggest="libm"
3532 avfilter_deps="avutil"
3533 avfilter_suggest="libm"
3534 avformat_deps="avcodec avutil"
3535 avformat_suggest="libm network zlib"
3536 avresample_deps="avutil"
3537 avresample_suggest="libm"
3538 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3539 postproc_deps="avutil gpl"
3540 postproc_suggest="libm"
3541 swresample_deps="avutil"
3542 swresample_suggest="libm libsoxr"
3543 swscale_deps="avutil"
3544 swscale_suggest="libm"
3545
3546 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3547 avfilter_extralibs="pthreads_extralibs"
3548 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3549
3550 # programs
3551 ffmpeg_deps="avcodec avfilter avformat"
3552 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3553                null_filter
3554                trim_filter"
3555 ffmpeg_suggest="ole32 psapi shell32"
3556 ffplay_deps="avcodec avformat swscale swresample sdl2"
3557 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3558 ffplay_suggest="shell32"
3559 ffprobe_deps="avcodec avformat"
3560 ffprobe_suggest="shell32"
3561
3562 # documentation
3563 podpages_deps="perl"
3564 manpages_deps="perl pod2man"
3565 htmlpages_deps="perl"
3566 htmlpages_deps_any="makeinfo_html texi2html"
3567 txtpages_deps="perl makeinfo"
3568 doc_deps_any="manpages htmlpages podpages txtpages"
3569
3570 # default parameters
3571
3572 logfile="ffbuild/config.log"
3573
3574 # installation paths
3575 prefix_default="/usr/local"
3576 bindir_default='${prefix}/bin'
3577 datadir_default='${prefix}/share/ffmpeg'
3578 docdir_default='${prefix}/share/doc/ffmpeg'
3579 incdir_default='${prefix}/include'
3580 libdir_default='${prefix}/lib'
3581 mandir_default='${prefix}/share/man'
3582
3583 # toolchain
3584 ar_default="ar"
3585 cc_default="gcc"
3586 cxx_default="g++"
3587 host_cc_default="gcc"
3588 doxygen_default="doxygen"
3589 install="install"
3590 ln_s_default="ln -s -f"
3591 nm_default="nm -g"
3592 pkg_config_default=pkg-config
3593 ranlib_default="ranlib"
3594 strip_default="strip"
3595 version_script='--version-script'
3596 objformat="elf32"
3597 x86asmexe_default="nasm"
3598 windres_default="windres"
3599 nvcc_default="nvcc"
3600 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3601 striptype="direct"
3602
3603 # OS
3604 target_os_default=$(tolower $(uname -s))
3605 host_os=$target_os_default
3606
3607 # machine
3608 if test "$target_os_default" = aix; then
3609     arch_default=$(uname -p)
3610     strip_default="strip -X32_64"
3611 else
3612     arch_default=$(uname -m)
3613 fi
3614 cpu="generic"
3615 intrinsics="none"
3616
3617 # configurable options
3618 enable $PROGRAM_LIST
3619 enable $DOCUMENT_LIST
3620 enable $EXAMPLE_LIST
3621 enable $(filter_out avresample $LIBRARY_LIST)
3622 enable stripping
3623
3624 enable asm
3625 enable debug
3626 enable doc
3627 enable faan faandct faanidct
3628 enable optimizations
3629 enable runtime_cpudetect
3630 enable safe_bitstream_reader
3631 enable static
3632 enable swscale_alpha
3633 enable valgrind_backtrace
3634
3635 sws_max_filter_size_default=256
3636 set_default sws_max_filter_size
3637
3638 # internal components are enabled by default
3639 enable $EXTRALIBS_LIST
3640
3641 # Avoid external, non-system, libraries getting enabled by dependency resolution
3642 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3643
3644 # build settings
3645 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3646 LIBPREF="lib"
3647 LIBSUF=".a"
3648 FULLNAME='$(NAME)$(BUILDSUF)'
3649 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3650 SLIBPREF="lib"
3651 SLIBSUF=".so"
3652 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3653 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3654 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3655 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3656 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3657 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3658 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3659
3660 asflags_filter=echo
3661 cflags_filter=echo
3662 ldflags_filter=echo
3663
3664 AS_C='-c'
3665 AS_O='-o $@'
3666 CC_C='-c'
3667 CC_E='-E -o $@'
3668 CC_O='-o $@'
3669 CXX_C='-c'
3670 CXX_O='-o $@'
3671 OBJCC_C='-c'
3672 OBJCC_E='-E -o $@'
3673 OBJCC_O='-o $@'
3674 X86ASM_O='-o $@'
3675 LD_O='-o $@'
3676 LD_LIB='-l%'
3677 LD_PATH='-L'
3678 HOSTCC_C='-c'
3679 HOSTCC_E='-E -o $@'
3680 HOSTCC_O='-o $@'
3681 HOSTLD_O='-o $@'
3682 NVCC_C='-c'
3683 NVCC_O='-o $@'
3684
3685 host_extralibs='-lm'
3686 host_cflags_filter=echo
3687 host_ldflags_filter=echo
3688
3689 target_path='$(CURDIR)'
3690
3691 # since the object filename is not given with the -MM flag, the compiler
3692 # is only able to print the basename, and we must add the path ourselves
3693 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3694 DEPFLAGS='-MM'
3695
3696 mkdir -p ffbuild
3697
3698 # find source path
3699 if test -f configure; then
3700     source_path=.
3701 else
3702     source_path=$(cd $(dirname "$0"); pwd)
3703     case "$source_path" in
3704         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3705     esac
3706     test -e "$source_path/config.h" &&
3707         die "Out of tree builds are impossible with config.h in source dir."
3708 fi
3709
3710 for v in "$@"; do
3711     r=${v#*=}
3712     l=${v%"$r"}
3713     r=$(sh_quote "$r")
3714     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3715 done
3716
3717 find_things_extern(){
3718     thing=$1
3719     pattern=$2
3720     file=$source_path/$3
3721     out=${4:-$thing}
3722     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3723 }
3724
3725 find_filters_extern(){
3726     file=$source_path/$1
3727     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3728     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3729 }
3730
3731 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3732 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3733 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3734 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3735 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3736 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3737 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3738 CODEC_LIST="
3739     $ENCODER_LIST
3740     $DECODER_LIST
3741 "
3742 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3743 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3744 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3745 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3746
3747 AVCODEC_COMPONENTS_LIST="
3748     $BSF_LIST
3749     $DECODER_LIST
3750     $ENCODER_LIST
3751     $HWACCEL_LIST
3752     $PARSER_LIST
3753 "
3754
3755 AVDEVICE_COMPONENTS_LIST="
3756     $INDEV_LIST
3757     $OUTDEV_LIST
3758 "
3759
3760 AVFILTER_COMPONENTS_LIST="
3761     $FILTER_LIST
3762 "
3763
3764 AVFORMAT_COMPONENTS_LIST="
3765     $DEMUXER_LIST
3766     $MUXER_LIST
3767     $PROTOCOL_LIST
3768 "
3769
3770 ALL_COMPONENTS="
3771     $AVCODEC_COMPONENTS_LIST
3772     $AVDEVICE_COMPONENTS_LIST
3773     $AVFILTER_COMPONENTS_LIST
3774     $AVFORMAT_COMPONENTS_LIST
3775 "
3776
3777 for n in $COMPONENT_LIST; do
3778     v=$(toupper ${n%s})_LIST
3779     eval enable \$$v
3780     eval ${n}_if_any="\$$v"
3781 done
3782
3783 enable $ARCH_EXT_LIST
3784
3785 die_unknown(){
3786     echo "Unknown option \"$1\"."
3787     echo "See $0 --help for available options."
3788     exit 1
3789 }
3790
3791 print_in_columns() {
3792     cols=$(expr $ncols / 24)
3793     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3794 }
3795
3796 show_list() {
3797     suffix=_$1
3798     shift
3799     echo $* | sed s/$suffix//g | print_in_columns
3800     exit 0
3801 }
3802
3803 rand_list(){
3804     IFS=', '
3805     set -- $*
3806     unset IFS
3807     for thing; do
3808         comp=${thing%:*}
3809         prob=${thing#$comp}
3810         prob=${prob#:}
3811         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3812         echo "prob ${prob:-0.5}"
3813         printf '%s\n' $comp
3814     done
3815 }
3816
3817 do_random(){
3818     action=$1
3819     shift
3820     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3821     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3822 }
3823
3824 for opt do
3825     optval="${opt#*=}"
3826     case "$opt" in
3827         --extra-ldflags=*)
3828             add_ldflags $optval
3829         ;;
3830         --extra-ldexeflags=*)
3831             add_ldexeflags $optval
3832         ;;
3833         --extra-ldsoflags=*)
3834             add_ldsoflags $optval
3835         ;;
3836         --extra-ldlibflags=*)
3837             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3838                  "removed in the future. Use --extra-ldsoflags instead."
3839             add_ldsoflags $optval
3840         ;;
3841         --extra-libs=*)
3842             add_extralibs $optval
3843         ;;
3844         --disable-devices)
3845             disable $INDEV_LIST $OUTDEV_LIST
3846         ;;
3847         --enable-debug=*)
3848             debuglevel="$optval"
3849         ;;
3850         --disable-programs)
3851             disable $PROGRAM_LIST
3852         ;;
3853         --disable-everything)
3854             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3855         ;;
3856         --disable-all)
3857             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3858             disable $LIBRARY_LIST $PROGRAM_LIST doc
3859             enable avutil
3860         ;;
3861         --enable-random|--disable-random)
3862             action=${opt%%-random}
3863             do_random ${action#--} $COMPONENT_LIST
3864         ;;
3865         --enable-random=*|--disable-random=*)
3866             action=${opt%%-random=*}
3867             do_random ${action#--} $optval
3868         ;;
3869         --enable-sdl)
3870             enable sdl2
3871         ;;
3872         --enable-*=*|--disable-*=*)
3873             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3874             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3875             eval list=\$$(toupper $thing)_LIST
3876             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3877             list=$(filter "$name" $list)
3878             [ "$list" = "" ] && warn "Option $opt did not match anything"
3879             $action $list
3880         ;;
3881         --enable-yasm|--disable-yasm)
3882             warn "The ${opt} option is only provided for compatibility and will be\n"\
3883                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3884             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3885         ;;
3886         --yasmexe=*)
3887             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3888                  "removed in the future. Use --x86asmexe instead."
3889             x86asmexe="$optval"
3890         ;;
3891         --enable-?*|--disable-?*)
3892             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3893             if is_in $option $COMPONENT_LIST; then
3894                 test $action = disable && action=unset
3895                 eval $action \$$(toupper ${option%s})_LIST
3896             elif is_in $option $CMDLINE_SELECT; then
3897                 $action $option
3898             else
3899                 die_unknown $opt
3900             fi
3901         ;;
3902         --list-*)
3903             NAME="${opt#--list-}"
3904             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3905             NAME=${NAME%s}
3906             eval show_list $NAME \$$(toupper $NAME)_LIST
3907         ;;
3908         --help|-h) show_help
3909         ;;
3910         --quiet|-q) quiet=yes
3911         ;;
3912         --fatal-warnings) enable fatal_warnings
3913         ;;
3914         --libfuzzer=*)
3915             libfuzzer_path="$optval"
3916         ;;
3917         *)
3918             optname="${opt%%=*}"
3919             optname="${optname#--}"
3920             optname=$(echo "$optname" | sed 's/-/_/g')
3921             if is_in $optname $CMDLINE_SET; then
3922                 eval $optname='$optval'
3923             elif is_in $optname $CMDLINE_APPEND; then
3924                 append $optname "$optval"
3925             else
3926                 die_unknown $opt
3927             fi
3928         ;;
3929     esac
3930 done
3931
3932 for e in $env; do
3933     eval "export $e"
3934 done
3935
3936 if disabled autodetect; then
3937
3938     # Unless iconv is explicitely disabled by the user, we still want to probe
3939     # for the iconv from the libc.
3940     disabled iconv || enable libc_iconv
3941
3942     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3943     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3944 fi
3945 # Mark specifically enabled, but normally autodetected libraries as requested.
3946 for lib in $AUTODETECT_LIBS; do
3947     enabled $lib && request $lib
3948 done
3949 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3950 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3951 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3952
3953 disabled logging && logfile=/dev/null
3954
3955 # command line configuration sanity checks
3956
3957 # we need to build at least one lib type
3958 if ! enabled_any static shared; then
3959     cat <<EOF
3960 At least one library type must be built.
3961 Specify --enable-static to build the static libraries or --enable-shared to
3962 build the shared libraries as well. To only build the shared libraries specify
3963 --disable-static in addition to --enable-shared.
3964 EOF
3965     exit 1
3966 fi
3967
3968 die_license_disabled() {
3969     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3970 }
3971
3972 die_license_disabled_gpl() {
3973     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3974 }
3975
3976 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3977 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3978
3979 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3980 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3981
3982 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3983
3984 if enabled nonfree; then
3985     license="nonfree and unredistributable"
3986 elif enabled gplv3; then
3987     license="GPL version 3 or later"
3988 elif enabled lgplv3; then
3989     license="LGPL version 3 or later"
3990 elif enabled gpl; then
3991     license="GPL version 2 or later"
3992 else
3993     license="LGPL version 2.1 or later"
3994 fi
3995
3996 enabled_all gnutls openssl &&
3997     die "GnuTLS and OpenSSL must not be enabled at the same time."
3998
3999 enabled_all gnutls mbedtls &&
4000     die "GnuTLS and mbedTLS must not be enabled at the same time."
4001
4002 enabled_all openssl mbedtls &&
4003     die "OpenSSL and mbedTLS must not be enabled at the same time."
4004
4005 # Disable all the library-specific components if the library itself
4006 # is disabled, see AVCODEC_LIST and following _LIST variables.
4007
4008 disable_components(){
4009     disabled ${1} && disable $(
4010         eval components="\$$(toupper ${1})_COMPONENTS"
4011         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4012     )
4013 }
4014
4015 map 'disable_components $v' $LIBRARY_LIST
4016
4017 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4018 set >> $logfile
4019
4020 test -n "$valgrind" && toolchain="valgrind-memcheck"
4021
4022 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4023     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4024     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4025 }
4026
4027 case "$toolchain" in
4028     *-asan)
4029         cc_default="${toolchain%-asan}"
4030         add_cflags  -fsanitize=address
4031         add_ldflags -fsanitize=address
4032     ;;
4033     *-msan)
4034         cc_default="${toolchain%-msan}"
4035         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4036         add_ldflags -fsanitize=memory
4037     ;;
4038     *-tsan)
4039         cc_default="${toolchain%-tsan}"
4040         add_cflags  -fsanitize=thread
4041         add_ldflags -fsanitize=thread
4042         case "$toolchain" in
4043             gcc-tsan)
4044                 add_cflags  -fPIC
4045                 add_ldflags -fPIC
4046                 ;;
4047         esac
4048     ;;
4049     *-usan)
4050         cc_default="${toolchain%-usan}"
4051         add_cflags  -fsanitize=undefined
4052         add_ldflags -fsanitize=undefined
4053     ;;
4054     valgrind-*)
4055         target_exec_default="valgrind"
4056         case "$toolchain" in
4057             valgrind-massif)
4058                 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"
4059                 ;;
4060             valgrind-memcheck)
4061                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4062                 ;;
4063         esac
4064     ;;
4065     msvc)
4066         # Check whether the current MSVC version needs the C99 converter.
4067         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4068         # support enough of C99 to build ffmpeg. Default to the new
4069         # behaviour if the regexp was unable to match anything, since this
4070         # successfully parses the version number of existing supported
4071         # versions that require the converter (MSVC 2010 and 2012).
4072         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4073         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4074             cc_default="cl"
4075             cxx_default="cl"
4076         else
4077             die "Unsupported MSVC version (2013 or newer required)"
4078         fi
4079         ld_default="$source_path/compat/windows/mslink"
4080         nm_default="dumpbin -symbols"
4081         ar_default="lib"
4082         case "$arch" in
4083         aarch64|arm64)
4084             as_default="armasm64"
4085             ;;
4086         arm*)
4087             as_default="armasm"
4088             ;;
4089         esac
4090         target_os_default="win32"
4091         # Use a relative path for TMPDIR. This makes sure all the
4092         # ffconf temp files are written with a relative path, avoiding
4093         # issues with msys/win32 path conversion for MSVC parameters
4094         # such as -Fo<file> or -out:<file>.
4095         TMPDIR=.
4096     ;;
4097     icl)
4098         cc_default="icl"
4099         ld_default="xilink"
4100         nm_default="dumpbin -symbols"
4101         ar_default="xilib"
4102         target_os_default="win32"
4103         TMPDIR=.
4104     ;;
4105     gcov)
4106         add_cflags  -fprofile-arcs -ftest-coverage
4107         add_ldflags -fprofile-arcs -ftest-coverage
4108     ;;
4109     llvm-cov)
4110         add_cflags -fprofile-arcs -ftest-coverage
4111         add_ldflags --coverage
4112     ;;
4113     hardened)
4114         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4115         add_cflags   -fno-strict-overflow -fstack-protector-all
4116         add_ldflags  -Wl,-z,relro -Wl,-z,now
4117         add_cflags   -fPIE
4118         add_ldexeflags -fPIE -pie
4119     ;;
4120     ?*)
4121         die "Unknown toolchain $toolchain"
4122     ;;
4123 esac
4124
4125 if test -n "$cross_prefix"; then
4126     test -n "$arch" && test -n "$target_os" ||
4127         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4128     enable cross_compile
4129 fi
4130
4131 ar_default="${cross_prefix}${ar_default}"
4132 cc_default="${cross_prefix}${cc_default}"
4133 cxx_default="${cross_prefix}${cxx_default}"
4134 nm_default="${cross_prefix}${nm_default}"
4135 pkg_config_default="${cross_prefix}${pkg_config_default}"
4136 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4137     ranlib_default="${cross_prefix}${ranlib_default} -D"
4138 else
4139     ranlib_default="${cross_prefix}${ranlib_default}"
4140 fi
4141 strip_default="${cross_prefix}${strip_default}"
4142 windres_default="${cross_prefix}${windres_default}"
4143
4144 sysinclude_default="${sysroot}/usr/include"
4145
4146 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4147     target_exec target_os x86asmexe nvcc
4148 enabled cross_compile || host_cc_default=$cc
4149 set_default host_cc
4150
4151 pkg_config_fail_message=""
4152 if ! $pkg_config --version >/dev/null 2>&1; then
4153     warn "$pkg_config not found, library detection may fail."
4154     pkg_config=false
4155 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4156     pkg_config_fail_message="
4157 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4158 fi
4159
4160 if test $doxygen != $doxygen_default && \
4161   ! $doxygen --version >/dev/null 2>&1; then
4162     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4163 fi
4164
4165 exesuf() {
4166     case $1 in
4167         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4168     esac
4169 }
4170
4171 EXESUF=$(exesuf $target_os)
4172 HOSTEXESUF=$(exesuf $host_os)
4173
4174 # set temporary file name
4175 : ${TMPDIR:=$TEMPDIR}
4176 : ${TMPDIR:=$TMP}
4177 : ${TMPDIR:=/tmp}
4178
4179 if [ -n "$tempprefix" ] ; then
4180     mktemp(){
4181         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4182         echo "$tmpname"
4183         mkdir "$tmpname"
4184     }
4185 elif ! test_cmd mktemp -u XXXXXX; then
4186     # simple replacement for missing mktemp
4187     # NOT SAFE FOR GENERAL USE
4188     mktemp(){
4189         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4190         echo "$tmpname"
4191         mkdir "$tmpname"
4192     }
4193 fi
4194
4195 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4196     die "Unable to create temporary directory in $TMPDIR."
4197
4198 tmpfile(){
4199     tmp="${FFTMPDIR}/test"$2
4200     (set -C; exec > $tmp) 2> /dev/null ||
4201         die "Unable to create temporary file in $FFTMPDIR."
4202     eval $1=$tmp
4203 }
4204
4205 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4206 trap 'exit 2' INT
4207
4208 tmpfile TMPASM .asm
4209 tmpfile TMPC   .c
4210 tmpfile TMPCPP .cpp
4211 tmpfile TMPE   $EXESUF
4212 tmpfile TMPH   .h
4213 tmpfile TMPM   .m
4214 tmpfile TMPO   .o
4215 tmpfile TMPS   .S
4216 tmpfile TMPSH  .sh
4217 tmpfile TMPV   .ver
4218
4219 unset -f mktemp
4220
4221 chmod +x $TMPE
4222
4223 # make sure we can execute files in $TMPDIR
4224 cat > $TMPSH 2>> $logfile <<EOF
4225 #! /bin/sh
4226 EOF
4227 chmod +x $TMPSH >> $logfile 2>&1
4228 if ! $TMPSH >> $logfile 2>&1; then
4229     cat <<EOF
4230 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4231 variable to another directory and make sure that it is not mounted noexec.
4232 EOF
4233     die "Sanity test failed."
4234 fi
4235
4236 armasm_flags(){
4237     for flag; do
4238         case $flag in
4239             # Filter out MSVC cl.exe options from cflags that shouldn't
4240             # be passed to gas-preprocessor
4241             -M[TD]*)                                            ;;
4242             *)                  echo $flag                      ;;
4243         esac
4244    done
4245 }
4246
4247 cparser_flags(){
4248     for flag; do
4249         case $flag in
4250             -Wno-switch)             echo -Wno-switch-enum ;;
4251             -Wno-format-zero-length) ;;
4252             -Wdisabled-optimization) ;;
4253             -Wno-pointer-sign)       echo -Wno-other ;;
4254             *)                       echo $flag ;;
4255         esac
4256     done
4257 }
4258
4259 msvc_common_flags(){
4260     for flag; do
4261         case $flag in
4262             # In addition to specifying certain flags under the compiler
4263             # specific filters, they must be specified here as well or else the
4264             # generic catch all at the bottom will print the original flag.
4265             -Wall)                ;;
4266             -Wextra)              ;;
4267             -std=c99)             ;;
4268             # Common flags
4269             -fomit-frame-pointer) ;;
4270             -g)                   echo -Z7 ;;
4271             -fno-math-errno)      ;;
4272             -fno-common)          ;;
4273             -fno-signed-zeros)    ;;
4274             -fPIC)                ;;
4275             -mthumb)              ;;
4276             -march=*)             ;;
4277             -lz)                  echo zlib.lib ;;
4278             -lx264)               echo libx264.lib ;;
4279             -lstdc++)             ;;
4280             -l*)                  echo ${flag#-l}.lib ;;
4281             -LARGEADDRESSAWARE)   echo $flag ;;
4282             -L*)                  echo -libpath:${flag#-L} ;;
4283             *)                    echo $flag ;;
4284         esac
4285     done
4286 }
4287
4288 msvc_flags(){
4289     msvc_common_flags "$@"
4290     for flag; do
4291         case $flag in
4292             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4293                                        -wd4554 ;;
4294             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4295                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4296                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4297                                        -wd4307 \
4298                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4299         esac
4300     done
4301 }
4302
4303 icl_flags(){
4304     msvc_common_flags "$@"
4305     for flag; do
4306         case $flag in
4307             # Despite what Intel's documentation says -Wall, which is supported
4308             # on Windows, does enable remarks so disable them here.
4309             -Wall)                echo $flag -Qdiag-disable:remark ;;
4310             -std=c99)             echo -Qstd=c99 ;;
4311             -flto)                echo -ipo ;;
4312         esac
4313     done
4314 }
4315
4316 icc_flags(){
4317     for flag; do
4318         case $flag in
4319             -flto)                echo -ipo ;;
4320             *)                    echo $flag ;;
4321         esac
4322     done
4323 }
4324
4325 suncc_flags(){
4326     for flag; do
4327         case $flag in
4328             -march=*|-mcpu=*)
4329                 case "${flag#*=}" in
4330                     native)                   echo -xtarget=native       ;;
4331                     v9|niagara)               echo -xarch=sparc          ;;
4332                     ultrasparc)               echo -xarch=sparcvis       ;;
4333                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4334                     i586|pentium)             echo -xchip=pentium        ;;
4335                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4336                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4337                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4338                     pentium4*)          echo -xtarget=pentium4           ;;
4339                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4340                     *-sse3)             echo -xarch=sse3                 ;;
4341                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4342                     bonnell)                   echo -xarch=ssse3         ;;
4343                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4344                     westmere)                  echo -xtarget=westmere    ;;
4345                     silvermont)                echo -xarch=sse4_2        ;;
4346                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4347                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4348                                                echo -xarch=avx           ;;
4349                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4350                     btver1)                    echo -xarch=amdsse4a      ;;
4351                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4352                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4353                     k8|opteron|athlon64|athlon-fx)
4354                                                echo -xarch=sse2a         ;;
4355                     athlon*)                   echo -xarch=pentium_proa  ;;
4356                 esac
4357                 ;;
4358             -std=c99)             echo -xc99              ;;
4359             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4360             -fPIC)                echo -KPIC -xcode=pic32 ;;
4361             -W*,*)                echo $flag              ;;
4362             -f*-*|-W*|-mimpure-text)                      ;;
4363             -shared)              echo -G                 ;;
4364             *)                    echo $flag              ;;
4365         esac
4366     done
4367 }
4368
4369 probe_cc(){
4370     pfx=$1
4371     _cc=$2
4372     first=$3
4373
4374     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4375     unset _ld_o _ldflags _ld_lib _ld_path
4376     unset _depflags _DEPCMD _DEPFLAGS
4377     _flags_filter=echo
4378
4379     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4380         true # no-op to avoid reading stdin in following checks
4381     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4382         _type=llvm_gcc
4383         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4384         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4385         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4386         _cflags_speed='-O3'
4387         _cflags_size='-Os'
4388     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4389         _type=gcc
4390         gcc_version=$($_cc --version | head -n1)
4391         gcc_basever=$($_cc -dumpversion)
4392         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4393         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4394         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4395         case $gcc_basever in
4396             2) ;;
4397             2.*) ;;
4398             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4399         esac
4400         if [ "$first" = true ]; then
4401             case $gcc_basever in
4402                 4.2*)
4403                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4404             esac
4405         fi
4406         _cflags_speed='-O3'
4407         _cflags_size='-Os'
4408     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4409         _type=icc
4410         _ident=$($_cc --version | head -n1)
4411         _depflags='-MMD'
4412         _cflags_speed='-O3'
4413         _cflags_size='-Os'
4414         _cflags_noopt='-O1'
4415         _flags_filter=icc_flags
4416     elif $_cc -v 2>&1 | grep -q xlc; then
4417         _type=xlc
4418         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4419         _cflags_speed='-O5'
4420         _cflags_size='-O5 -qcompact'
4421     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4422         test -d "$sysroot" || die "No valid sysroot specified."
4423         _type=armcc
4424         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4425         armcc_conf="$PWD/armcc.conf"
4426         $_cc --arm_linux_configure                 \
4427              --arm_linux_config_file="$armcc_conf" \
4428              --configure_sysroot="$sysroot"        \
4429              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4430              die "Error creating armcc configuration file."
4431         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4432         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4433         as_default="${cross_prefix}gcc"
4434         _depflags='-MMD'
4435         _cflags_speed='-O3'
4436         _cflags_size='-Os'
4437     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4438         _type=clang
4439         _ident=$($_cc --version 2>/dev/null | head -n1)
4440         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4441         _cflags_speed='-O3'
4442         _cflags_size='-Oz'
4443     elif $_cc -V 2>&1 | grep -q Sun; then
4444         _type=suncc
4445         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4446         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4447         _DEPFLAGS='-xM1 -xc99'
4448         _ldflags='-std=c99'
4449         _cflags_speed='-O5'
4450         _cflags_size='-O5 -xspace'
4451         _flags_filter=suncc_flags
4452     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4453         _type=pathscale
4454         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4455         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4456         _cflags_speed='-O2'
4457         _cflags_size='-Os'
4458         _flags_filter='filter_out -Wdisabled-optimization'
4459     elif $_cc -v 2>&1 | grep -q Open64; then
4460         _type=open64
4461         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4462         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4463         _cflags_speed='-O2'
4464         _cflags_size='-Os'
4465         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4466     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4467         _type=armasm
4468         _ident=$($_cc | head -n1)
4469         # 4509: "This form of conditional instruction is deprecated"
4470         _flags="-nologo -ignore 4509"
4471         _flags_filter=armasm_flags
4472     elif $_cc 2>&1 | grep -q Intel; then
4473         _type=icl
4474         _ident=$($_cc 2>&1 | head -n1)
4475         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4476         # Not only is O3 broken on 13.x+ but it is slower on all previous
4477         # versions (tested) as well.
4478         _cflags_speed="-O2"
4479         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4480         if $_cc 2>&1 | grep -q Linker; then
4481             _ld_o='-out:$@'
4482         else
4483             _ld_o='-Fe$@'
4484         fi
4485         _cc_o='-Fo$@'
4486         _cc_e='-P'
4487         _flags_filter=icl_flags
4488         _ld_lib='lib%.a'
4489         _ld_path='-libpath:'
4490         # -Qdiag-error to make icl error when seeing certain unknown arguments
4491         _flags='-nologo -Qdiag-error:4044,10157'
4492         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4493         # with MSVC which enables it by default.
4494         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4495         disable stripping
4496     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4497         # lld can emulate multiple different linkers; in ms link.exe mode,
4498         # the -? parameter gives the help output which contains an identifyable
4499         # string, while it gives an error in other modes.
4500         _type=lld-link
4501         # The link.exe mode doesn't have a switch for getting the version,
4502         # but we can force it back to gnu mode and get the version from there.
4503         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4504         _ld_o='-out:$@'
4505         _flags_filter=msvc_flags
4506         _ld_lib='lib%.a'
4507         _ld_path='-libpath:'
4508     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4509         _type=msvc
4510         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4511         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4512         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4513         _cflags_speed="-O2"
4514         _cflags_size="-O1"
4515         _cflags_noopt="-O1"
4516         if $_cc -nologo- 2>&1 | grep -q Linker; then
4517             _ld_o='-out:$@'
4518         else
4519             _ld_o='-Fe$@'
4520         fi
4521         _cc_o='-Fo$@'
4522         _cc_e='-P -Fi$@'
4523         _flags_filter=msvc_flags
4524         _ld_lib='lib%.a'
4525         _ld_path='-libpath:'
4526         _flags='-nologo'
4527         disable stripping
4528     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4529         _type=cparser
4530         _ident=$($_cc --version | head -n1)
4531         _depflags='-MMD'
4532         _cflags_speed='-O4'
4533         _cflags_size='-O2'
4534         _flags_filter=cparser_flags
4535     fi
4536
4537     eval ${pfx}_type=\$_type
4538     eval ${pfx}_ident=\$_ident
4539 }
4540
4541 set_ccvars(){
4542     eval ${1}_C=\${_cc_c-\${${1}_C}}
4543     eval ${1}_E=\${_cc_e-\${${1}_E}}
4544     eval ${1}_O=\${_cc_o-\${${1}_O}}
4545
4546     if [ -n "$_depflags" ]; then
4547         eval ${1}_DEPFLAGS=\$_depflags
4548     else
4549         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4550         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4551         eval DEP${1}FLAGS=\$_flags
4552     fi
4553 }
4554
4555 probe_cc cc "$cc" "true"
4556 cflags_filter=$_flags_filter
4557 cflags_speed=$_cflags_speed
4558 cflags_size=$_cflags_size
4559 cflags_noopt=$_cflags_noopt
4560 add_cflags $_flags $_cflags
4561 cc_ldflags=$_ldflags
4562 set_ccvars CC
4563 set_ccvars CXX
4564
4565 probe_cc hostcc "$host_cc"
4566 host_cflags_filter=$_flags_filter
4567 host_cflags_speed=$_cflags_speed
4568 add_host_cflags  $_flags $_cflags
4569 set_ccvars HOSTCC
4570
4571 test -n "$cc_type" && enable $cc_type ||
4572     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4573
4574 : ${as_default:=$cc}
4575 : ${objcc_default:=$cc}
4576 : ${dep_cc_default:=$cc}
4577 : ${ld_default:=$cc}
4578 : ${host_ld_default:=$host_cc}
4579 set_default ar as objcc dep_cc ld ln_s host_ld windres
4580
4581 probe_cc as "$as"
4582 asflags_filter=$_flags_filter
4583 add_asflags $_flags $_cflags
4584 set_ccvars AS
4585
4586 probe_cc objcc "$objcc"
4587 objcflags_filter=$_flags_filter
4588 add_objcflags $_flags $_cflags
4589 set_ccvars OBJC
4590
4591 probe_cc ld "$ld"
4592 ldflags_filter=$_flags_filter
4593 add_ldflags $_flags $_ldflags
4594 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4595 LD_O=${_ld_o-$LD_O}
4596 LD_LIB=${_ld_lib-$LD_LIB}
4597 LD_PATH=${_ld_path-$LD_PATH}
4598
4599 probe_cc hostld "$host_ld"
4600 host_ldflags_filter=$_flags_filter
4601 add_host_ldflags $_flags $_ldflags
4602 HOSTLD_O=${_ld_o-$HOSTLD_O}
4603
4604 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4605     probe_cc depcc "$dep_cc"
4606     CCDEP=${_DEPCMD:-$DEPCMD}
4607     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4608     DEPCCFLAGS=$_flags
4609 fi
4610
4611 if $ar 2>&1 | grep -q Microsoft; then
4612     arflags="-nologo"
4613     ar_o='-out:$@'
4614 elif $ar 2>&1 | grep -q "\[D\] "; then
4615     arflags="rcD"
4616     ar_o='$@'
4617 else
4618     arflags="rc"
4619     ar_o='$@'
4620 fi
4621
4622 add_cflags $extra_cflags
4623 add_cxxflags $extra_cxxflags
4624 add_objcflags $extra_objcflags
4625 add_asflags $extra_cflags
4626
4627 if test -n "$sysroot"; then
4628     case "$cc_type" in
4629         gcc|llvm_gcc|clang)
4630             add_cppflags --sysroot="$sysroot"
4631             add_ldflags --sysroot="$sysroot"
4632         ;;
4633     esac
4634 fi
4635
4636 if test "$cpu" = host; then
4637     enabled cross_compile &&
4638         die "--cpu=host makes no sense when cross-compiling."
4639
4640     case "$cc_type" in
4641         gcc|llvm_gcc)
4642             check_native(){
4643                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4644                 sed -n "/cc1.*$1=/{
4645                             s/.*$1=\\([^ ]*\\).*/\\1/
4646                             p
4647                             q
4648                         }" $TMPE
4649             }
4650             cpu=$(check_native -march || check_native -mcpu)
4651         ;;
4652         clang)
4653             check_native(){
4654                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4655                 sed -n "/cc1.*-target-cpu /{
4656                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4657                             p
4658                             q
4659                         }" $TMPE
4660             }
4661             cpu=$(check_native -march)
4662         ;;
4663     esac
4664
4665     test "${cpu:-host}" = host &&
4666         die "--cpu=host not supported with compiler $cc"
4667 fi
4668
4669 # Deal with common $arch aliases
4670 case "$arch" in
4671     aarch64|arm64)
4672         arch="aarch64"
4673     ;;
4674     arm*|iPad*|iPhone*)
4675         arch="arm"
4676     ;;
4677     mips*|IP*)
4678         case "$arch" in
4679         *el)
4680             add_cppflags -EL
4681             add_ldflags -EL
4682         ;;
4683         *eb)
4684             add_cppflags -EB
4685             add_ldflags -EB
4686         ;;
4687         esac
4688         arch="mips"
4689     ;;
4690     parisc*|hppa*)
4691         arch="parisc"
4692     ;;
4693     "Power Macintosh"|ppc*|powerpc*)
4694         arch="ppc"
4695     ;;
4696     s390|s390x)
4697         arch="s390"
4698     ;;
4699     sh4|sh)
4700         arch="sh4"
4701     ;;
4702     sun4*|sparc*)
4703         arch="sparc"
4704     ;;
4705     tilegx|tile-gx)
4706         arch="tilegx"
4707     ;;
4708     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4709         arch="x86"
4710     ;;
4711 esac
4712
4713 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4714 enable $arch
4715
4716 # Add processor-specific flags
4717 if enabled aarch64; then
4718
4719     case $cpu in
4720         armv*)
4721             cpuflags="-march=$cpu"
4722         ;;
4723         *)
4724             cpuflags="-mcpu=$cpu"
4725         ;;
4726     esac
4727
4728 elif enabled alpha; then
4729
4730     cpuflags="-mcpu=$cpu"
4731
4732 elif enabled arm; then
4733
4734     check_arm_arch() {
4735         test_cpp_condition stddef.h \
4736             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4737             $cpuflags
4738     }
4739
4740     probe_arm_arch() {
4741         if   check_arm_arch 4;        then echo armv4
4742         elif check_arm_arch 4T;       then echo armv4t
4743         elif check_arm_arch 5;        then echo armv5
4744         elif check_arm_arch 5E;       then echo armv5e
4745         elif check_arm_arch 5T;       then echo armv5t
4746         elif check_arm_arch 5TE;      then echo armv5te
4747         elif check_arm_arch 5TEJ;     then echo armv5te
4748         elif check_arm_arch 6;        then echo armv6
4749         elif check_arm_arch 6J;       then echo armv6j
4750         elif check_arm_arch 6K;       then echo armv6k
4751         elif check_arm_arch 6Z;       then echo armv6z
4752         elif check_arm_arch 6KZ;      then echo armv6zk
4753         elif check_arm_arch 6ZK;      then echo armv6zk
4754         elif check_arm_arch 6T2;      then echo armv6t2
4755         elif check_arm_arch 7;        then echo armv7
4756         elif check_arm_arch 7A  7_A;  then echo armv7-a
4757         elif check_arm_arch 7S;       then echo armv7-a
4758         elif check_arm_arch 7R  7_R;  then echo armv7-r
4759         elif check_arm_arch 7M  7_M;  then echo armv7-m
4760         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4761         elif check_arm_arch 8A  8_A;  then echo armv8-a
4762         fi
4763     }
4764
4765     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4766
4767     case $cpu in
4768         armv*)
4769             cpuflags="-march=$cpu"
4770             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4771         ;;
4772         *)
4773             cpuflags="-mcpu=$cpu"
4774             case $cpu in
4775                 cortex-a*)                               subarch=armv7a  ;;
4776                 cortex-r*)                               subarch=armv7r  ;;
4777                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4778                 arm11*)                                  subarch=armv6   ;;
4779                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4780                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4781                 *)                             subarch=$(probe_arm_arch) ;;
4782             esac
4783         ;;
4784     esac
4785
4786     case "$subarch" in
4787         armv5t*)    enable fast_clz                ;;
4788         armv[6-8]*)
4789             enable fast_clz
4790             disabled fast_unaligned || enable fast_unaligned
4791             ;;
4792     esac
4793
4794 elif enabled avr32; then
4795
4796     case $cpu in
4797         ap7[02]0[0-2])
4798             subarch="avr32_ap"
4799             cpuflags="-mpart=$cpu"
4800         ;;
4801         ap)
4802             subarch="avr32_ap"
4803             cpuflags="-march=$cpu"
4804         ;;
4805         uc3[ab]*)
4806             subarch="avr32_uc"
4807             cpuflags="-mcpu=$cpu"
4808         ;;
4809         uc)
4810             subarch="avr32_uc"
4811             cpuflags="-march=$cpu"
4812         ;;
4813     esac
4814
4815 elif enabled bfin; then
4816
4817     cpuflags="-mcpu=$cpu"
4818
4819 elif enabled mips; then
4820
4821     cpuflags="-march=$cpu"
4822
4823     if [ "$cpu" != "generic" ]; then
4824         disable mips32r2
4825         disable mips32r5
4826         disable mips64r2
4827         disable mips32r6
4828         disable mips64r6
4829         disable loongson2
4830         disable loongson3
4831
4832         case $cpu in
4833             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4834                 enable mips32r2
4835                 disable msa
4836             ;;
4837             p5600|i6400|p6600)
4838                 disable mipsdsp
4839                 disable mipsdspr2
4840             ;;
4841             loongson*)
4842                 enable loongson2
4843                 enable loongson3
4844                 enable local_aligned
4845                 enable simd_align_16
4846                 enable fast_64bit
4847                 enable fast_clz
4848                 enable fast_cmov
4849                 enable fast_unaligned
4850                 disable aligned_stack
4851                 disable mipsdsp
4852                 disable mipsdspr2
4853                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4854                 if [ $cc == gcc ]; then
4855                     gcc_version=$(gcc -dumpversion)
4856                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4857                         expensive_optimization_flag=""
4858                     else
4859                         expensive_optimization_flag="-fno-expensive-optimizations"
4860                     fi
4861                 fi
4862                 case $cpu in
4863                     loongson3*)
4864                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4865                     ;;
4866                     loongson2e)
4867                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4868                     ;;
4869                     loongson2f)
4870                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4871                     ;;
4872                 esac
4873             ;;
4874             *)
4875                 # Unknown CPU. Disable everything.
4876                 warn "unknown CPU. Disabling all MIPS optimizations."
4877                 disable mipsfpu
4878                 disable mipsdsp
4879                 disable mipsdspr2
4880                 disable msa
4881                 disable mmi
4882             ;;
4883         esac
4884
4885         case $cpu in
4886             24kc)
4887                 disable mipsfpu
4888                 disable mipsdsp
4889                 disable mipsdspr2
4890             ;;
4891             24kf*)
4892                 disable mipsdsp
4893                 disable mipsdspr2
4894             ;;
4895             24kec|34kc|1004kc)
4896                 disable mipsfpu
4897                 disable mipsdspr2
4898             ;;
4899             24kef*|34kf*|1004kf*)
4900                 disable mipsdspr2
4901             ;;
4902             74kc)
4903                 disable mipsfpu
4904             ;;
4905             p5600)
4906                 enable mips32r5
4907                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4908             ;;
4909             i6400)
4910                 enable mips64r6
4911                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4912             ;;
4913             p6600)
4914                 enable mips64r6
4915                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4916             ;;
4917         esac
4918     else
4919         # We do not disable anything. Is up to the user to disable the unwanted features.
4920         warn 'generic cpu selected'
4921     fi
4922
4923 elif enabled ppc; then
4924
4925     disable ldbrx
4926
4927     case $(tolower $cpu) in
4928         601|ppc601|powerpc601)
4929             cpuflags="-mcpu=601"
4930             disable altivec
4931         ;;
4932         603*|ppc603*|powerpc603*)
4933             cpuflags="-mcpu=603"
4934             disable altivec
4935         ;;
4936         604*|ppc604*|powerpc604*)
4937             cpuflags="-mcpu=604"
4938             disable altivec
4939         ;;
4940         g3|75*|ppc75*|powerpc75*)
4941             cpuflags="-mcpu=750"
4942             disable altivec
4943         ;;
4944         g4|745*|ppc745*|powerpc745*)
4945             cpuflags="-mcpu=7450"
4946             disable vsx
4947         ;;
4948         74*|ppc74*|powerpc74*)
4949             cpuflags="-mcpu=7400"
4950             disable vsx
4951         ;;
4952         g5|970|ppc970|powerpc970)
4953             cpuflags="-mcpu=970"
4954             disable vsx
4955         ;;
4956         power[3-6]*)
4957             cpuflags="-mcpu=$cpu"
4958             disable vsx
4959         ;;
4960         power[7-8]*)
4961             cpuflags="-mcpu=$cpu"
4962         ;;
4963         cell)
4964             cpuflags="-mcpu=cell"
4965             enable ldbrx
4966             disable vsx
4967         ;;
4968         e500mc)
4969             cpuflags="-mcpu=e500mc"
4970             disable altivec
4971         ;;
4972         e500v2)
4973             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4974             disable altivec
4975             disable dcbzl
4976         ;;
4977         e500)
4978             cpuflags="-mcpu=8540 -mhard-float"
4979             disable altivec
4980             disable dcbzl
4981         ;;
4982     esac
4983
4984 elif enabled sparc; then
4985
4986     case $cpu in
4987         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4988             cpuflags="-mcpu=$cpu"
4989         ;;
4990         ultrasparc*|niagara[234])
4991             cpuflags="-mcpu=$cpu"
4992         ;;
4993     esac
4994
4995 elif enabled x86; then
4996
4997     case $cpu in
4998         i[345]86|pentium)
4999             cpuflags="-march=$cpu"
5000             disable i686
5001             disable mmx
5002         ;;
5003         # targets that do NOT support nopl and conditional mov (cmov)
5004         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5005             cpuflags="-march=$cpu"
5006             disable i686
5007         ;;
5008         # targets that do support nopl and conditional mov (cmov)
5009         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5010         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5011         |amdfam10|barcelona|b[dt]ver*|znver*)
5012             cpuflags="-march=$cpu"
5013             enable i686
5014             enable fast_cmov
5015         ;;
5016         # targets that do support conditional mov but on which it's slow
5017         pentium4|pentium4m|prescott|nocona)
5018             cpuflags="-march=$cpu"
5019             enable i686
5020             disable fast_cmov
5021         ;;
5022     esac
5023
5024 fi
5025
5026 if [ "$cpu" != generic ]; then
5027     add_cflags  $cpuflags
5028     add_asflags $cpuflags
5029     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5030 fi
5031
5032 # compiler sanity check
5033 test_exec <<EOF
5034 int main(void){ return 0; }
5035 EOF
5036 if test "$?" != 0; then
5037     echo "$cc is unable to create an executable file."
5038     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5039         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5040         echo "Only do this if you know what cross compiling means."
5041     fi
5042     die "C compiler test failed."
5043 fi
5044
5045 add_cppflags -D_ISOC99_SOURCE
5046 add_cxxflags -D__STDC_CONSTANT_MACROS
5047 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5048
5049 # some compilers silently accept -std=c11, so we also need to check that the
5050 # version macro is defined properly
5051 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5052     add_cflags -std=c11 ||
5053     check_cflags -std=c99
5054
5055 check_cppflags -D_FILE_OFFSET_BITS=64
5056 check_cppflags -D_LARGEFILE_SOURCE
5057
5058 add_host_cppflags -D_ISOC99_SOURCE
5059 check_host_cflags -std=c99
5060 check_host_cflags -Wall
5061 check_host_cflags $host_cflags_speed
5062
5063 check_64bit(){
5064     arch32=$1
5065     arch64=$2
5066     expr=${3:-'sizeof(void *) > 4'}
5067     test_code cc "" "int test[2*($expr) - 1]" &&
5068         subarch=$arch64 || subarch=$arch32
5069     enable $subarch
5070 }
5071
5072 case "$arch" in
5073     aarch64|alpha|ia64)
5074         enabled shared && enable_weak pic
5075     ;;
5076     mips)
5077         check_64bit mips mips64 '_MIPS_SIM > 1'
5078         enabled shared && enable_weak pic
5079     ;;
5080     parisc)
5081         check_64bit parisc parisc64
5082         enabled shared && enable_weak pic
5083     ;;
5084     ppc)
5085         check_64bit ppc ppc64
5086         enabled shared && enable_weak pic
5087     ;;
5088     s390)
5089         check_64bit s390 s390x
5090         enabled shared && enable_weak pic
5091     ;;
5092     sparc)
5093         check_64bit sparc sparc64
5094         enabled shared && enable_weak pic
5095     ;;
5096     x86)
5097         check_64bit x86_32 x86_64
5098         # Treat x32 as x64 for now. Note it also needs pic if shared
5099         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5100             subarch=x86_64 && enable x86_64 && disable x86_32
5101         if enabled x86_64; then
5102             enabled shared && enable_weak pic
5103             objformat=elf64
5104         fi
5105     ;;
5106 esac
5107
5108 # OS specific
5109 case $target_os in
5110     aix)
5111         SHFLAGS=-shared
5112         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5113         enabled shared && add_ldflags -Wl,-brtl
5114         arflags='-Xany -r -c'
5115         striptype=""
5116         ;;
5117     android)
5118         disable symver
5119         enable section_data_rel_ro
5120         add_cflags -fPIE
5121         add_ldexeflags -fPIE -pie
5122         SLIB_INSTALL_NAME='$(SLIBNAME)'
5123         SLIB_INSTALL_LINKS=
5124         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5125         ;;
5126     haiku)
5127         prefix_default="/boot/common"
5128         network_extralibs="-lnetwork"
5129         host_extralibs=
5130         ;;
5131     sunos)
5132         SHFLAGS='-shared -Wl,-h,$$(@F)'
5133         enabled x86 && append SHFLAGS -mimpure-text
5134         network_extralibs="-lsocket -lnsl"
5135         add_cppflags -D__EXTENSIONS__
5136         # When using suncc to build, the Solaris linker will mark
5137         # an executable with each instruction set encountered by
5138         # the Solaris assembler.  As our libraries contain their own
5139         # guards for processor-specific code, instead suppress
5140         # generation of the HWCAPS ELF section on Solaris x86 only.
5141         enabled_all suncc x86 &&
5142             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5143             add_ldflags -Wl,-M,mapfile
5144         nm_default='nm -P -g'
5145         striptype=""
5146         version_script='-M'
5147         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5148         ;;
5149     netbsd)
5150         disable symver
5151         oss_indev_extralibs="-lossaudio"
5152         oss_outdev_extralibs="-lossaudio"
5153         enabled gcc || check_ldflags -Wl,-zmuldefs
5154         ;;
5155     openbsd|bitrig)
5156         disable symver
5157         striptype=""
5158         SHFLAGS='-shared'
5159         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5160         SLIB_INSTALL_LINKS=
5161         oss_indev_extralibs="-lossaudio"
5162         oss_outdev_extralibs="-lossaudio"
5163         ;;
5164     dragonfly)
5165         disable symver
5166         ;;
5167     freebsd)
5168         ;;
5169     bsd/os)
5170         add_extralibs -lpoll -lgnugetopt
5171         strip="strip -d"
5172         ;;
5173     darwin)
5174         enabled ppc && add_asflags -force_cpusubtype_ALL
5175         install_name_dir_default='$(SHLIBDIR)'
5176         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5177         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5178         strip="${strip} -x"
5179         add_ldflags -Wl,-dynamic,-search_paths_first
5180         check_cflags -Werror=partial-availability
5181         SLIBSUF=".dylib"
5182         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5183         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5184         enabled x86_64 && objformat="macho64" || objformat="macho32"
5185         enabled_any pic shared x86_64 ||
5186             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5187         check_headers dispatch/dispatch.h &&
5188             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5189         if test -n "$sysroot"; then
5190             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5191             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5192         fi
5193         version_script='-exported_symbols_list'
5194         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5195         ;;
5196     msys*)
5197         die "Native MSYS builds are discouraged, please use the MINGW environment."
5198         ;;
5199     mingw32*|mingw64*)
5200         target_os=mingw32
5201         LIBTARGET=i386
5202         if enabled x86_64; then
5203             LIBTARGET="i386:x86-64"
5204         elif enabled arm; then
5205             LIBTARGET="arm"
5206         elif enabled aarch64; then
5207             LIBTARGET="arm64"
5208         fi
5209         if enabled shared; then
5210             # Cannot build both shared and static libs when using dllimport.
5211             disable static
5212         fi
5213         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5214         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5215         shlibdir_default="$bindir_default"
5216         SLIBPREF=""
5217         SLIBSUF=".dll"
5218         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5219         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5220         if test_cmd lib.exe -list; then
5221             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5222             if enabled x86_64; then
5223                 LIBTARGET=x64
5224             fi
5225         else
5226             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5227         fi
5228         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5229         SLIB_INSTALL_LINKS=
5230         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5231         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5232         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5233         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5234         enabled x86_64 && objformat="win64" || objformat="win32"
5235         dlltool="${cross_prefix}dlltool"
5236         ranlib=:
5237         enable dos_paths
5238         check_ldflags -Wl,--nxcompat,--dynamicbase
5239         # Lets work around some stupidity in binutils.
5240         # ld will strip relocations from executables even though we need them
5241         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5242         # however ld then forgets what the entry point should be (oops) so we
5243         # have to manually (re)set it.
5244         if enabled x86_32; then
5245             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5246         elif enabled x86_64; then
5247             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5248             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5249             # Set image base >4GB for extra entropy with HEASLR
5250             add_ldexeflags -Wl,--image-base,0x140000000
5251             append SHFLAGS -Wl,--image-base,0x180000000
5252         fi
5253         ;;
5254     win32|win64)
5255         disable symver
5256         if enabled shared; then
5257             # Link to the import library instead of the normal static library
5258             # for shared libs.
5259             LD_LIB='%.lib'
5260             # Cannot build both shared and static libs with MSVC or icl.
5261             disable static
5262         fi
5263         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5264         shlibdir_default="$bindir_default"
5265         SLIBPREF=""
5266         SLIBSUF=".dll"
5267         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5268         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5269         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5270         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5271         SLIB_INSTALL_LINKS=
5272         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5273         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5274         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5275         enabled x86_64 && objformat="win64" || objformat="win32"
5276         ranlib=:
5277         enable dos_paths
5278         ;;
5279     cygwin*)
5280         target_os=cygwin
5281         shlibdir_default="$bindir_default"
5282         SLIBPREF="cyg"
5283         SLIBSUF=".dll"
5284         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5285         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5286         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5287         SLIB_INSTALL_LINKS=
5288         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5289         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5290         enabled x86_64 && objformat="win64" || objformat="win32"
5291         enable dos_paths
5292         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5293         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5294         ;;
5295     *-dos|freedos|opendos)
5296         network_extralibs="-lsocket"
5297         objformat="coff"
5298         enable dos_paths
5299         ;;
5300     linux)
5301         enable section_data_rel_ro
5302         enabled_any arm aarch64 && enable_weak linux_perf
5303         ;;
5304     irix*)
5305         target_os=irix
5306         ranlib="echo ignoring ranlib"
5307         ;;
5308     os/2*)
5309         strip="lxlite -CS"
5310         striptype=""
5311         objformat="aout"
5312         add_cppflags -D_GNU_SOURCE
5313         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5314         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5315         LIBSUF="_s.a"
5316         SLIBPREF=""
5317         SLIBSUF=".dll"
5318         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5319         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5320         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5321             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5322             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5323             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5324             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5325         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5326             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5327         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5328         SLIB_INSTALL_LINKS=
5329         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5330         enable dos_paths
5331         enable_weak os2threads
5332         ;;
5333     gnu/kfreebsd)
5334         add_cppflags -D_BSD_SOURCE
5335         ;;
5336     gnu)
5337         ;;
5338     qnx)
5339         add_cppflags -D_QNX_SOURCE
5340         network_extralibs="-lsocket"
5341         ;;
5342     symbian)
5343         SLIBSUF=".dll"
5344         enable dos_paths
5345         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5346         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5347         add_ldflags -Wl,--target1-abs,--no-undefined \
5348                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5349                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5350         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5351                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5352                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5353         ;;
5354     minix)
5355         ;;
5356     none)
5357         ;;
5358     *)
5359         die "Unknown OS '$target_os'."
5360         ;;
5361 esac
5362
5363 # test if creating links works
5364 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5365 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5366 mkdir "$link_dest"
5367 $ln_s "$link_dest" "$link_name"
5368 touch "$link_dest/test_file"
5369 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5370     # create link to source path
5371     [ -e src ] && rm src
5372     $ln_s "$source_path" src
5373     source_link=src
5374 else
5375     # creating directory links doesn't work
5376     # fall back to using the full source path
5377     source_link="$source_path"
5378 fi
5379 # cleanup
5380 rm -r "$link_dest"
5381 rm -r "$link_name"
5382
5383 # determine libc flavour
5384
5385 probe_libc(){
5386     pfx=$1
5387     pfx_no_=${pfx%_}
5388     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5389     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5390         eval ${pfx}libc_type=uclibc
5391         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5392     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5393         eval ${pfx}libc_type=glibc
5394         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5395     # MinGW headers can be installed on Cygwin, so check for newlib first.
5396     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5397         eval ${pfx}libc_type=newlib
5398         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5399     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5400     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5401         eval ${pfx}libc_type=mingw64
5402         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5403             add_compat msvcrt/snprintf.o
5404             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5405         fi
5406         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5407         eval test \$${pfx_no_}cc_type = "gcc" &&
5408             add_${pfx}cppflags -D__printf__=__gnu_printf__
5409         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5410             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5411     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5412          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5413         eval ${pfx}libc_type=mingw32
5414         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5415             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5416             die "ERROR: MinGW32 runtime version must be >= 3.15."
5417         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5418         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5419             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5420         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5421             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5422         eval test \$${pfx_no_}cc_type = "gcc" &&
5423             add_${pfx}cppflags -D__printf__=__gnu_printf__
5424     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5425         eval ${pfx}libc_type=msvcrt
5426         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5427             if [ "$pfx" = host_ ]; then
5428                 add_host_cppflags -Dsnprintf=_snprintf
5429             else
5430                 add_compat strtod.o strtod=avpriv_strtod
5431                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5432                                              _snprintf=avpriv_snprintf  \
5433                                              vsnprintf=avpriv_vsnprintf
5434             fi
5435         fi
5436         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5437         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5438         # 0x601 by default unless something else is set by the user.
5439         # This can easily lead to us detecting functions only present
5440         # in such new versions and producing binaries requiring windows 7.0.
5441         # Therefore explicitly set the default to Vista unless the user has
5442         # set something else on the command line.
5443         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5444         # family. For these cases, configure is free to use any functions
5445         # found in the SDK headers by default. (Alternatively, we could force
5446         # _WIN32_WINNT to 0x0602 in that case.)
5447         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5448             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5449 #ifdef WINAPI_FAMILY
5450 #include <winapifamily.h>
5451 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5452 #error not desktop
5453 #endif
5454 #endif
5455 EOF
5456         if [ "$pfx" = "" ]; then
5457             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5458             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5459         fi
5460     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5461         eval ${pfx}libc_type=klibc
5462     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5463         eval ${pfx}libc_type=bionic
5464     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5465         eval ${pfx}libc_type=solaris
5466         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5467     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5468         eval ${pfx}libc_type=djgpp
5469         add_cppflags -U__STRICT_ANSI__
5470         add_cflags "-include $source_path/compat/djgpp/math.h"
5471         add_compat djgpp/math.o
5472     fi
5473     test_${pfx}cc <<EOF
5474 #include <time.h>
5475 void *v = localtime_r;
5476 EOF
5477 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5478 #include <time.h>
5479 void *v = localtime_r;
5480 EOF
5481
5482     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5483 }
5484
5485 probe_libc
5486 probe_libc host_
5487
5488 # hacks for compiler/libc/os combinations
5489
5490 case $libc_type in
5491     bionic)
5492         add_compat strtod.o strtod=avpriv_strtod
5493         ;;
5494 esac
5495
5496 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5497     add_cppflags '-I\$(SRC_PATH)/compat/float'
5498
5499 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5500
5501 set_default libdir
5502 : ${shlibdir_default:="$libdir"}
5503 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5504
5505 set_default $PATHS_LIST
5506 set_default nm
5507
5508 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5509
5510 enable_weak_pic() {
5511     disabled pic && return
5512     enable pic
5513     add_cppflags -DPIC
5514     case "$target_os" in
5515     mingw*|cygwin*|win*)
5516         ;;
5517     *)
5518         add_cflags -fPIC
5519         add_asflags -fPIC
5520         ;;
5521     esac
5522 }
5523
5524 enabled pic && enable_weak_pic
5525
5526 test_cc <<EOF || die "Symbol mangling check failed."
5527 int ff_extern;
5528 EOF
5529 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5530 extern_prefix=${sym%%ff_extern*}
5531
5532 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5533
5534 for restrict_keyword in restrict __restrict__ __restrict ""; do
5535     test_code cc "" "char * $restrict_keyword p" && break
5536 done
5537
5538 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5539
5540 # The global variable ensures the bits appear unchanged in the object file.
5541 test_cc <<EOF || die "endian test failed"
5542 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5543 EOF
5544 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5545
5546 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5547
5548 if ! enabled ppc64 || enabled bigendian; then
5549     disable vsx
5550 fi
5551
5552 check_gas() {
5553     log "check_gas using '$as' as AS"
5554     # :vararg is used on aarch64, arm and ppc altivec
5555     check_as vararg "
5556 .macro m n, y:vararg=0
5557 \n: .int \y
5558 .endm
5559 m x" || return 1
5560     # .altmacro is only used in arm asm
5561     ! enabled arm || check_as gnu_as ".altmacro"
5562 }
5563
5564 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5565     nogas=:
5566     enabled_any arm aarch64 && nogas=die
5567     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5568     as_noop=-v
5569
5570     case $as_type in
5571         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5572         gcc)  gaspp_as_type=gas ;;
5573         *)    gaspp_as_type=$as_type ;;
5574     esac
5575
5576     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5577
5578     test "${as#*gas-preprocessor.pl}" != "$as" ||
5579     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5580         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5581
5582     if ! check_gas ; then
5583         as=${gas:=$as}
5584         check_gas || \
5585             $nogas "GNU assembler not found, install/update gas-preprocessor"
5586     fi
5587
5588     check_as as_func ".func test
5589                       .endfunc"
5590 fi
5591
5592 check_inline_asm inline_asm_labels '"1:\n"'
5593
5594 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5595
5596 if enabled aarch64; then
5597     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5598     # internal assembler in clang 3.3 does not support this instruction
5599     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5600     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5601
5602     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5603
5604 elif enabled alpha; then
5605
5606     check_cflags -mieee
5607
5608 elif enabled arm; then
5609
5610     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5611     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5612 float func(float a, float b){ return a+b; }
5613 EOF
5614     enabled thumb && check_cflags -mthumb || check_cflags -marm
5615
5616     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5617         :
5618     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5619         :
5620     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5621         case "${cross_prefix:-$cc}" in
5622             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5623             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5624 __asm__ (".eabi_attribute 28, 1");
5625 int main(void) { return 0; }
5626 EOF
5627         esac
5628         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5629     fi
5630
5631     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5632     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5633     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5634     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5635     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5636     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5637     enabled setend  && check_insn setend  'setend be'
5638
5639     [ $target_os = linux ] || [ $target_os = android ] ||
5640         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5641             $ARCH_EXT_LIST_ARM
5642
5643     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5644
5645     check_as as_arch_directive ".arch armv7-a"
5646     check_as as_dn_directive   "ra .dn d0.i16"
5647     check_as as_fpu_directive  ".fpu neon"
5648
5649     # llvm's integrated assembler supports .object_arch from llvm 3.5
5650     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5651         check_as as_object_arch ".object_arch armv4"
5652
5653     # MS armasm fails to assemble our PIC constructs
5654     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5655
5656 elif enabled mips; then
5657
5658     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5659     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5660     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5661
5662     # Enable minimum ISA based on selected options
5663     if enabled mips64; then
5664         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5665         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5666         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5667     else
5668         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5669         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5670         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5671         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5672     fi
5673
5674     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5675     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5676     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5677     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5678     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5679
5680     if enabled bigendian && enabled msa; then
5681         disable msa
5682     fi
5683
5684 elif enabled parisc; then
5685
5686     if enabled gcc; then
5687         case $($cc -dumpversion) in
5688             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5689         esac
5690     fi
5691
5692 elif enabled ppc; then
5693
5694     enable local_aligned
5695
5696     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5697     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5698     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5699     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5700
5701     if enabled altivec; then
5702         check_cflags -maltivec -mabi=altivec
5703
5704         # check if our compiler supports Motorola AltiVec C API
5705         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5706                                     vector signed int v2 = (vector signed int) { 1 };
5707                                     v1 = vec_add(v1, v2);"
5708
5709         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5710     fi
5711
5712     if enabled vsx; then
5713         check_cflags -mvsx &&
5714         check_cc vsx altivec.h "int v[4] = { 0 };
5715                                 vector signed int v1 = vec_vsx_ld(0, v);"
5716     fi
5717
5718     if enabled power8; then
5719         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5720     fi
5721
5722 elif enabled x86; then
5723
5724     check_builtin rdtsc    intrin.h   "__rdtsc()"
5725     check_builtin mm_empty mmintrin.h "_mm_empty()"
5726
5727     enable local_aligned
5728
5729     # check whether EBP is available on x86
5730     # As 'i' is stored on the stack, this program will crash
5731     # if the base pointer is used to access it because the
5732     # base pointer is cleared in the inline assembly code.
5733     check_exec_crash <<EOF && enable ebp_available
5734 volatile int i=0;
5735 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5736 return i;
5737 EOF
5738
5739     # check whether EBX is available on x86
5740     check_inline_asm ebx_available '""::"b"(0)' &&
5741         check_inline_asm ebx_available '"":::"%ebx"'
5742
5743     # check whether xmm clobbers are supported
5744     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5745
5746     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5747         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5748
5749     # check whether binutils is new enough to compile SSSE3/MMXEXT
5750     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5751     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5752
5753     probe_x86asm(){
5754         x86asmexe_probe=$1
5755         if test_cmd $x86asmexe_probe -v; then
5756             x86asmexe=$x86asmexe_probe
5757             x86asm_type=nasm
5758             x86asm_debug="-g -F dwarf"
5759             X86ASMDEP=
5760             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5761         elif test_cmd $x86asmexe_probe --version; then
5762             x86asmexe=$x86asmexe_probe
5763             x86asm_type=yasm
5764             x86asm_debug="-g dwarf2"
5765             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5766             X86ASM_DEPFLAGS=
5767         fi
5768         check_x86asm x86asm "movbe ecx, [5]"
5769     }
5770
5771     if ! disabled_any asm mmx x86asm; then
5772         disable x86asm
5773         for program in $x86asmexe nasm yasm; do
5774             probe_x86asm $program && break
5775         done
5776         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5777         X86ASMFLAGS="-f $objformat"
5778         enabled pic               && append X86ASMFLAGS "-DPIC"
5779         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5780         case "$objformat" in
5781             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5782         esac
5783
5784         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5785         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5786         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5787         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5788         check_x86asm cpunop          "CPU amdnop"
5789     fi
5790
5791     case "$cpu" in
5792         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5793             disable fast_clz
5794         ;;
5795     esac
5796
5797 fi
5798
5799 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5800
5801 check_ldflags -Wl,--as-needed
5802 check_ldflags -Wl,-z,noexecstack
5803
5804 if ! disabled network; then
5805     check_func getaddrinfo $network_extralibs
5806     check_func inet_aton $network_extralibs
5807
5808     check_type netdb.h "struct addrinfo"
5809     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5810     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5811     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5812     check_type poll.h "struct pollfd"
5813     check_type netinet/sctp.h "struct sctp_event_subscribe"
5814     check_struct "sys/socket.h" "struct msghdr" msg_flags
5815     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5816     check_type netinet/in.h "struct sockaddr_in6"
5817     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5818     check_type "sys/types.h sys/socket.h" socklen_t
5819
5820     # Prefer arpa/inet.h over winsock2
5821     if check_headers arpa/inet.h ; then
5822         check_func closesocket
5823     elif check_headers winsock2.h ; then
5824         check_func_headers winsock2.h closesocket -lws2 &&
5825             network_extralibs="-lws2" ||
5826         { check_func_headers winsock2.h closesocket -lws2_32 &&
5827             network_extralibs="-lws2_32"; } || disable winsock2_h network
5828         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5829
5830         check_type ws2tcpip.h socklen_t
5831         check_type ws2tcpip.h "struct addrinfo"
5832         check_type ws2tcpip.h "struct group_source_req"
5833         check_type ws2tcpip.h "struct ip_mreq_source"
5834         check_type ws2tcpip.h "struct ipv6_mreq"
5835         check_type winsock2.h "struct pollfd"
5836         check_struct winsock2.h "struct sockaddr" sa_len
5837         check_type ws2tcpip.h "struct sockaddr_in6"
5838         check_type ws2tcpip.h "struct sockaddr_storage"
5839     else
5840         disable network
5841     fi
5842 fi
5843
5844 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5845 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5846 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5847 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5848 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5849 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5850 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5851
5852 case "$custom_allocator" in
5853     jemalloc)
5854         # jemalloc by default does not use a prefix
5855         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5856     ;;
5857     tcmalloc)
5858         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5859         malloc_prefix=tc_
5860     ;;
5861 esac
5862
5863 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5864 check_func  ${malloc_prefix}memalign            && enable memalign
5865 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5866
5867 check_func  access
5868 check_func_headers stdlib.h arc4random
5869 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5870 check_func  fcntl
5871 check_func  fork
5872 check_func  gethrtime
5873 check_func  getopt
5874 check_func  getrusage
5875 check_func  gettimeofday
5876 check_func  isatty
5877 check_func  mkstemp
5878 check_func  mmap
5879 check_func  mprotect
5880 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5881 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5882 check_func  sched_getaffinity
5883 check_func  setrlimit
5884 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5885 check_func  strerror_r
5886 check_func  sysconf
5887 check_func  sysctl
5888 check_func  usleep
5889
5890 check_func_headers conio.h kbhit
5891 check_func_headers io.h setmode
5892 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5893 check_func_headers mach/mach_time.h mach_absolute_time
5894 check_func_headers stdlib.h getenv
5895 check_func_headers sys/stat.h lstat
5896
5897 check_func_headers windows.h GetProcessAffinityMask
5898 check_func_headers windows.h GetProcessTimes
5899 check_func_headers windows.h GetSystemTimeAsFileTime
5900 check_func_headers windows.h LoadLibrary
5901 check_func_headers windows.h MapViewOfFile
5902 check_func_headers windows.h PeekNamedPipe
5903 check_func_headers windows.h SetConsoleTextAttribute
5904 check_func_headers windows.h SetConsoleCtrlHandler
5905 check_func_headers windows.h Sleep
5906 check_func_headers windows.h VirtualAlloc
5907 check_func_headers glob.h glob
5908 enabled xlib &&
5909     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5910
5911 check_headers direct.h
5912 check_headers dirent.h
5913 check_headers dxgidebug.h
5914 check_headers dxva.h
5915 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5916 check_headers io.h
5917 check_headers linux/perf_event.h
5918 check_headers libcrystalhd/libcrystalhd_if.h
5919 check_headers malloc.h
5920 check_headers net/udplite.h
5921 check_headers poll.h
5922 check_headers sys/param.h
5923 check_headers sys/resource.h
5924 check_headers sys/select.h
5925 check_headers sys/time.h
5926 check_headers sys/un.h
5927 check_headers termios.h
5928 check_headers unistd.h
5929 check_headers valgrind/valgrind.h
5930 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5931 check_headers windows.h
5932 check_headers X11/extensions/XvMClib.h
5933 check_headers asm/types.h
5934
5935 # it seems there are versions of clang in some distros that try to use the
5936 # gcc headers, which explodes for stdatomic
5937 # so we also check that atomics actually work here
5938 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5939
5940 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5941 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5942     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5943 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5944 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5945 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5946
5947 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5948 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5949 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5950
5951 enabled appkit       && check_apple_framework AppKit
5952 enabled audiotoolbox && check_apple_framework AudioToolbox
5953 enabled avfoundation && check_apple_framework AVFoundation
5954 enabled coreimage    && check_apple_framework CoreImage
5955 enabled videotoolbox && check_apple_framework VideoToolbox
5956
5957 check_apple_framework CoreFoundation
5958 check_apple_framework CoreMedia
5959 check_apple_framework CoreVideo
5960
5961 enabled avfoundation && {
5962     disable coregraphics applicationservices
5963     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5964     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5965
5966 enabled videotoolbox && {
5967     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5968     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5969 }
5970
5971 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5972
5973 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5974 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5975 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5976 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5977 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5978
5979 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5980 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5981 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5982 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5983 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5984 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5985
5986 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5987
5988 if ! disabled ffnvcodec; then
5989     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5990           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5991       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5992           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5993 fi
5994
5995 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5996
5997 if ! disabled w32threads && ! enabled pthreads; then
5998     check_func_headers "windows.h process.h" _beginthreadex &&
5999         check_type "windows.h" CONDITION_VARIABLE &&
6000         check_type "windows.h" INIT_ONCE &&
6001         enable w32threads || disable w32threads
6002     if ! enabled w32threads && enabled winrt; then
6003         check_func_headers "windows.h" CreateThread &&
6004             enable w32threads || disable w32threads
6005     fi
6006 fi
6007
6008 # check for some common methods of building with pthread support
6009 # do this before the optional library checks as some of them require pthreads
6010 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6011     if check_lib pthreads pthread.h pthread_join   -pthread &&
6012        check_lib pthreads pthread.h pthread_create -pthread; then
6013         add_cflags -pthread
6014     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6015          check_lib pthreads pthread.h pthread_create -pthreads; then
6016         add_cflags -pthreads
6017     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6018          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6019         add_cflags -ldl -pthread
6020     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6021          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6022         :
6023     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6024          check_lib pthreads pthread.h pthread_create -lpthread; then
6025         :
6026     elif check_func pthread_join && check_func pthread_create; then
6027         enable pthreads
6028     fi
6029     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6030
6031     if enabled pthreads; then
6032         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6033         check_func pthread_cancel $pthreads_extralibs
6034     fi
6035 fi
6036
6037 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6038                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6039 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6040 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6041
6042 # On some systems dynamic loading requires no extra linker flags
6043 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6044
6045 check_lib libm math.h sin -lm
6046
6047 atan2f_args=2
6048 copysign_args=2
6049 hypot_args=2
6050 ldexpf_args=2
6051 powf_args=2
6052
6053 for func in $MATH_FUNCS; do
6054     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6055 done
6056
6057 for func in $COMPLEX_FUNCS; do
6058     eval check_complexfunc $func \${${func}_args:-1}
6059 done
6060
6061 # these are off by default, so fail if requested and not available
6062 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6063 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6064 enabled decklink          && { require_headers DeckLinkAPI.h &&
6065                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6066 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6067 enabled frei0r            && require_headers frei0r.h
6068 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6069 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6070 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6071 enabled ladspa            && require_headers ladspa.h
6072 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6073 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6074 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6075 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6076 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6077 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6078 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6079                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6080                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6081 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6082 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6083 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.0.1" "dav1d/dav1d.h" dav1d_version
6084 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6085 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6086 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6087 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6088                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6089                                  warn "using libfdk without pkg-config"; } }
6090 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"
6091 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6092 enabled fontconfig        && enable libfontconfig
6093 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6094 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6095 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6096 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6097                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6098 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6099                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6100                                done || die "ERROR: libgsm not found"; }
6101 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6102 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6103 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6104 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6105 # While it may appear that require is being used as a pkg-config
6106 # fallback for libmfx, it is actually being used to detect a different
6107 # installation route altogether.  If libmfx is installed via the Intel
6108 # Media SDK or Intel Media Server Studio, these don't come with
6109 # pkg-config support.  Instead, users should make sure that the build
6110 # can find the libraries and headers through other means.
6111 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6112                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6113 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6114 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6115 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6116                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6117 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6118                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6119                                die "ERROR: libnpp not found"; }
6120 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6121 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6122 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6123                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6124                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6125                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6126 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6127 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6128                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6129 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6130 enabled libopus           && {
6131     enabled libopus_decoder && {
6132         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6133     }
6134     enabled libopus_encoder && {
6135         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6136     }
6137 }
6138 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6139 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6140 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6141 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6142 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6143 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6144                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6145 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6146 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6147 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6148 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6149 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6150 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6151 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6152 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6153 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6154 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6155                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6156                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6157 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6158 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6159 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6160 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6161 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6162                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6163
6164 enabled libvpx            && {
6165     enabled libvpx_vp8_decoder && {
6166         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6167             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6168                 die "ERROR: libvpx decoder version must be >=1.4.0";
6169     }
6170     enabled libvpx_vp8_encoder && {
6171         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6172             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6173                 die "ERROR: libvpx encoder version must be >=1.4.0";
6174     }
6175     enabled libvpx_vp9_decoder && {
6176         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6177             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6178     }
6179     enabled libvpx_vp9_encoder && {
6180         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6181             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6182     }
6183     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6184         die "libvpx enabled but no supported decoders found"
6185     fi
6186 }
6187
6188 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6189 enabled libwebp           && {
6190     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6191     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6192 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6193                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6194                                  warn "using libx264 without pkg-config"; } } &&
6195                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6196                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6197 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6198                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6199 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6200 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6201 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6202 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6203 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6204 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6205                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6206                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6207 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6208 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6209                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6210                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6211                                die "ERROR: mbedTLS not found"; }
6212 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6213 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6214                                { ! enabled cross_compile &&
6215                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6216                                  add_ldflags -L/opt/vc/lib/ &&
6217                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6218                                die "ERROR: mmal not found" &&
6219                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6220 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6221                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6222                                die "ERROR: openal not found"; } &&
6223                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6224                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6225 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6226                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6227                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6228                                die "ERROR: opencl not found"; } &&
6229                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6230                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6231                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6232 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6233                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6234                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6235                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6236                                die "ERROR: opengl not found."
6237                              }
6238 enabled omx               && require_headers OMX_Core.h
6239 enabled omx_rpi           && { check_headers OMX_Core.h ||
6240                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6241                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6242 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6243                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6244                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6245                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6246                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6247                                die "ERROR: openssl not found"; }
6248 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6249                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6250                                { enabled libdrm ||
6251                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6252                              }
6253 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6254
6255
6256 if enabled gcrypt; then
6257     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6258     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6259         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6260         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6261         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6262             die "ERROR: gcrypt not found"
6263         add_cflags $gcrypt_cflags
6264     else
6265         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6266     fi
6267 fi
6268
6269 if enabled sdl2; then
6270     SDL2_CONFIG="${cross_prefix}sdl2-config"
6271     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6272     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6273         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6274         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6275         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6276         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6277         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6278             enable sdl2
6279     fi
6280     if test $target_os = "mingw32"; then
6281         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6282     fi
6283 fi
6284
6285 if enabled decklink; then
6286     case $target_os in
6287         mingw32*|mingw64*|win32|win64)
6288             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6289             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6290             ;;
6291     esac
6292 fi
6293
6294 enabled securetransport &&
6295     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6296     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6297         disable securetransport
6298
6299 enabled securetransport &&
6300     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6301
6302 enabled schannel &&
6303     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6304     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6305     schannel_extralibs="-lsecur32" ||
6306         disable schannel
6307
6308 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6309 enabled makeinfo \
6310     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6311     && enable makeinfo_html || disable makeinfo_html
6312 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6313 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6314 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6315 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6316
6317 # check V4L2 codecs available in the API
6318 check_headers linux/fb.h
6319 check_headers linux/videodev2.h
6320 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6321 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6322 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6323 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6324 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6325 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6326 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6327 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6328 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6329 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6330 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6331
6332 check_headers sys/videoio.h
6333 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6334
6335 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6336 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6337 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6338 # w32api 3.12 had it defined wrong
6339 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6340
6341 check_type "dshow.h" IBaseFilter
6342
6343 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6344 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6345     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6346     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6347     check_headers "dev/ic/bt8xx.h"
6348
6349 if check_struct sys/soundcard.h audio_buf_info bytes; then
6350     enable_sanitized sys/soundcard.h
6351 else
6352     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6353     #include <sys/soundcard.h>
6354     audio_buf_info abc;
6355 EOF
6356 fi
6357
6358 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6359     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6360
6361 enabled libjack &&
6362     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6363
6364 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6365
6366 if enabled libcdio; then
6367     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6368     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6369     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6370     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6371     die "ERROR: No usable libcdio/cdparanoia found"
6372 fi
6373
6374 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6375     disable libxcb_shm libxcb_shape libxcb_xfixes
6376
6377 if enabled libxcb; then
6378     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6379     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6380     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6381 fi
6382
6383 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6384
6385 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6386 # the desktop api partition
6387 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6388 #ifdef WINAPI_FAMILY
6389 #include <winapifamily.h>
6390 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6391 #error desktop, not uwp
6392 #else
6393 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6394 #endif
6395 #else
6396 #error no family set
6397 #endif
6398 EOF
6399
6400 enabled vaapi &&
6401     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6402
6403 if enabled vaapi; then
6404     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6405
6406     if enabled xlib; then
6407         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6408     fi
6409
6410     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6411 fi
6412
6413 if enabled_all opencl libdrm ; then
6414     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6415         enable opencl_drm_beignet
6416     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6417         enable opencl_drm_arm
6418 fi
6419
6420 if enabled_all opencl vaapi ; then
6421     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6422     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6423         enable opencl_vaapi_intel_media
6424 fi
6425
6426 if enabled_all opencl dxva2 ; then
6427     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6428         enable opencl_dxva2
6429 fi
6430
6431 if enabled_all opencl d3d11va ; then
6432     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6433         enable opencl_d3d11
6434 fi
6435
6436 enabled vdpau &&
6437     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6438
6439 enabled vdpau &&
6440     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6441
6442 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6443
6444 if enabled x86; then
6445     case $target_os in
6446         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6447             ;;
6448         *)
6449             disable ffnvcodec cuvid nvdec nvenc
6450             ;;
6451     esac
6452 else
6453     disable ffnvcodec cuvid nvdec nvenc
6454 fi
6455
6456 enabled ffnvcodec && enable cuda
6457
6458 enabled nvenc &&
6459     test_cc -I$source_path <<EOF || disable nvenc
6460 #include <ffnvcodec/nvEncodeAPI.h>
6461 NV_ENCODE_API_FUNCTION_LIST flist;
6462 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6463 int main(void) { return 0; }
6464 EOF
6465
6466 enabled amf &&
6467     check_cpp_condition amf "AMF/core/Version.h" \
6468         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6469
6470 # Funny iconv installations are not unusual, so check it after all flags have been set
6471 if enabled libc_iconv; then
6472     check_func_headers iconv.h iconv
6473 elif enabled iconv; then
6474     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6475 fi
6476
6477 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6478
6479 # add some useful compiler flags if supported
6480 check_cflags -Wdeclaration-after-statement
6481 check_cflags -Wall
6482 check_cflags -Wdisabled-optimization
6483 check_cflags -Wpointer-arith
6484 check_cflags -Wredundant-decls
6485 check_cflags -Wwrite-strings
6486 check_cflags -Wtype-limits
6487 check_cflags -Wundef
6488 check_cflags -Wmissing-prototypes
6489 check_cflags -Wno-pointer-to-int-cast
6490 check_cflags -Wstrict-prototypes
6491 check_cflags -Wempty-body
6492
6493 if enabled extra_warnings; then
6494     check_cflags -Wcast-qual
6495     check_cflags -Wextra
6496     check_cflags -Wpedantic
6497 fi
6498
6499 check_disable_warning(){
6500     warning_flag=-W${1#-Wno-}
6501     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6502 }
6503
6504 test_cflags -Werror=unused-command-line-argument &&
6505     append unknown_warning_flags "-Werror=unused-command-line-argument"
6506 test_cflags -Werror=unknown-warning-option &&
6507     append unknown_warning_flags "-Werror=unknown-warning-option"
6508
6509 check_disable_warning -Wno-parentheses
6510 check_disable_warning -Wno-switch
6511 check_disable_warning -Wno-format-zero-length
6512 check_disable_warning -Wno-pointer-sign
6513 check_disable_warning -Wno-unused-const-variable
6514 check_disable_warning -Wno-bool-operation
6515 check_disable_warning -Wno-char-subscripts
6516
6517 check_disable_warning_headers(){
6518     warning_flag=-W${1#-Wno-}
6519     test_cflags $warning_flag && add_cflags_headers $1
6520 }
6521
6522 check_disable_warning_headers -Wno-deprecated-declarations
6523 check_disable_warning_headers -Wno-unused-variable
6524
6525 test_cc <<EOF && enable blocks_extension
6526 void (^block)(void);
6527 EOF
6528
6529 # add some linker flags
6530 check_ldflags -Wl,--warn-common
6531 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6532 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6533 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6534
6535 # add some strip flags
6536 check_stripflags -x
6537
6538 enabled neon_clobber_test &&
6539     check_ldflags -Wl,--wrap,avcodec_open2              \
6540                   -Wl,--wrap,avcodec_decode_audio4      \
6541                   -Wl,--wrap,avcodec_decode_video2      \
6542                   -Wl,--wrap,avcodec_decode_subtitle2   \
6543                   -Wl,--wrap,avcodec_encode_audio2      \
6544                   -Wl,--wrap,avcodec_encode_video2      \
6545                   -Wl,--wrap,avcodec_encode_subtitle    \
6546                   -Wl,--wrap,avcodec_send_packet        \
6547                   -Wl,--wrap,avcodec_receive_packet     \
6548                   -Wl,--wrap,avcodec_send_frame         \
6549                   -Wl,--wrap,avcodec_receive_frame      \
6550                   -Wl,--wrap,swr_convert                \
6551                   -Wl,--wrap,avresample_convert ||
6552     disable neon_clobber_test
6553
6554 enabled xmm_clobber_test &&
6555     check_ldflags -Wl,--wrap,avcodec_open2              \
6556                   -Wl,--wrap,avcodec_decode_audio4      \
6557                   -Wl,--wrap,avcodec_decode_video2      \
6558                   -Wl,--wrap,avcodec_decode_subtitle2   \
6559                   -Wl,--wrap,avcodec_encode_audio2      \
6560                   -Wl,--wrap,avcodec_encode_video2      \
6561                   -Wl,--wrap,avcodec_encode_subtitle    \
6562                   -Wl,--wrap,avcodec_send_packet        \
6563                   -Wl,--wrap,avcodec_receive_packet     \
6564                   -Wl,--wrap,avcodec_send_frame         \
6565                   -Wl,--wrap,avcodec_receive_frame      \
6566                   -Wl,--wrap,swr_convert                \
6567                   -Wl,--wrap,avresample_convert         \
6568                   -Wl,--wrap,sws_scale ||
6569     disable xmm_clobber_test
6570
6571 check_ld "cc" proper_dce <<EOF
6572 extern const int array[512];
6573 static inline int func(void) { return array[0]; }
6574 int main(void) { return 0; }
6575 EOF
6576
6577 if enabled proper_dce; then
6578     echo "X { local: *; };" > $TMPV
6579     if test_ldflags -Wl,${version_script},$TMPV; then
6580         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6581         quotes='""'
6582         test_cc <<EOF && enable symver_asm_label
6583 void ff_foo(void) __asm__ ("av_foo@VERSION");
6584 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6585 EOF
6586         test_cc <<EOF && enable symver_gnu_asm
6587 __asm__(".symver ff_foo,av_foo@VERSION");
6588 void ff_foo(void) {}
6589 EOF
6590     fi
6591 fi
6592
6593 if [ -z "$optflags" ]; then
6594     if enabled small; then
6595         optflags=$cflags_size
6596     elif enabled optimizations; then
6597         optflags=$cflags_speed
6598     else
6599         optflags=$cflags_noopt
6600     fi
6601 fi
6602
6603 if [ -z "$nvccflags" ]; then
6604     nvccflags=$nvccflags_default
6605 fi
6606
6607 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6608     nvccflags="$nvccflags -m64"
6609 else
6610     nvccflags="$nvccflags -m32"
6611 fi
6612
6613 check_optflags(){
6614     check_cflags "$@"
6615     enabled lto && check_ldflags "$@"
6616 }
6617
6618 check_optflags $optflags
6619 check_optflags -fno-math-errno
6620 check_optflags -fno-signed-zeros
6621
6622 if enabled lto; then
6623     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6624     check_cflags  -flto
6625     check_ldflags -flto $cpuflags
6626     disable inline_asm_direct_symbol_refs
6627 fi
6628
6629 enabled ftrapv && check_cflags -ftrapv
6630
6631 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6632 int x;
6633 EOF
6634
6635
6636 if enabled icc; then
6637     # Just warnings, no remarks
6638     check_cflags -w1
6639     # -wd: Disable following warnings
6640     # 144, 167, 556: -Wno-pointer-sign
6641     # 188: enumerated type mixed with another type
6642     # 1292: attribute "foo" ignored
6643     # 1419: external declaration in primary source file
6644     # 10006: ignoring unknown option -fno-signed-zeros
6645     # 10148: ignoring unknown option -Wno-parentheses
6646     # 10156: ignoring option '-W'; no argument required
6647     # 13200: No EMMS instruction before call to function
6648     # 13203: No EMMS instruction before return from function
6649     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6650     # 11030: Warning unknown option --as-needed
6651     # 10156: ignoring option '-export'; no argument required
6652     check_ldflags -wd10156,11030
6653     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6654     enable ebp_available
6655     # The test above does not test linking
6656     enabled lto && disable symver_asm_label
6657     if enabled x86_32; then
6658         icc_version=$($cc -dumpversion)
6659         test ${icc_version%%.*} -ge 11 &&
6660             check_cflags -falign-stack=maintain-16-byte ||
6661             disable aligned_stack
6662     fi
6663 elif enabled gcc; then
6664     check_optflags -fno-tree-vectorize
6665     check_cflags -Werror=format-security
6666     check_cflags -Werror=implicit-function-declaration
6667     check_cflags -Werror=missing-prototypes
6668     check_cflags -Werror=return-type
6669     check_cflags -Werror=vla
6670     check_cflags -Wformat
6671     check_cflags -fdiagnostics-color=auto
6672     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6673     if enabled x86_32; then
6674         case $target_os in
6675         *bsd*)
6676             # BSDs don't guarantee a 16 byte aligned stack, but we can
6677             # request GCC to try to maintain 16 byte alignment throughout
6678             # function calls. Library entry points that might call assembly
6679             # functions align the stack. (The parameter means 2^4 bytes.)
6680             check_cflags -mpreferred-stack-boundary=4
6681             ;;
6682         esac
6683     fi
6684 elif enabled llvm_gcc; then
6685     check_cflags -mllvm -stack-alignment=16
6686 elif enabled clang; then
6687     if enabled x86_32; then
6688         # Clang doesn't support maintaining alignment without assuming the
6689         # same alignment in every function. If 16 byte alignment would be
6690         # enabled, one would also have to either add attribute_align_arg on
6691         # every single entry point into the libraries or enable -mstackrealign
6692         # (doing stack realignment in every single function).
6693         case $target_os in
6694         mingw32|win32|*bsd*)
6695             disable aligned_stack
6696             ;;
6697         *)
6698             check_cflags -mllvm -stack-alignment=16
6699             check_cflags -mstack-alignment=16
6700             ;;
6701         esac
6702     else
6703         check_cflags -mllvm -stack-alignment=16
6704         check_cflags -mstack-alignment=16
6705     fi
6706     check_cflags -Qunused-arguments
6707     check_cflags -Werror=implicit-function-declaration
6708     check_cflags -Werror=missing-prototypes
6709     check_cflags -Werror=return-type
6710 elif enabled cparser; then
6711     add_cflags -Wno-missing-variable-declarations
6712     add_cflags -Wno-empty-statement
6713 elif enabled armcc; then
6714     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6715     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6716     # 2523: use of inline assembly is deprecated
6717     add_cflags -W${armcc_opt},--diag_suppress=2523
6718     add_cflags -W${armcc_opt},--diag_suppress=1207
6719     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6720     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6721     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6722     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6723 elif enabled pathscale; then
6724     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6725     disable inline_asm
6726 elif enabled_any msvc icl; then
6727     enabled x86_32 && disable aligned_stack
6728     enabled_all x86_32 debug && add_cflags -Oy-
6729     enabled debug && add_ldflags -debug
6730     enable pragma_deprecated
6731     if enabled icl; then
6732         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6733         # (correctly) on icl 13.x.
6734         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6735             add_cflags -Qansi-alias
6736         # Some inline asm is not compilable in debug
6737         if enabled debug; then
6738             disable ebp_available
6739             disable ebx_available
6740         fi
6741     fi
6742     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6743     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6744     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6745     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6746     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6747     # MSVC 2013 and newer can handle it fine.
6748     # If this declspec fails, force including stdlib.h before the restrict redefinition
6749     # happens in config.h.
6750     if [ $restrict_keyword != restrict ]; then
6751         test_cc <<EOF || add_cflags -FIstdlib.h
6752 __declspec($restrict_keyword) void *foo(int);
6753 EOF
6754     fi
6755     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6756     # Issue has been fixed in MSVC v19.00.24218.
6757     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6758         check_cflags -d2SSAOptimizer-
6759     # enable utf-8 source processing on VS2015 U2 and newer
6760     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6761         add_cflags -utf-8
6762 fi
6763
6764 for pfx in "" host_; do
6765     varname=${pfx%_}cc_type
6766     eval "type=\$$varname"
6767     if [ "$type" = "msvc" ]; then
6768         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6769 static inline int foo(int a) { return a; }
6770 EOF
6771     fi
6772 done
6773
6774 case $as_type in
6775     clang)
6776         add_asflags -Qunused-arguments
6777     ;;
6778 esac
6779
6780 case $ld_type in
6781     clang)
6782         check_ldflags -Qunused-arguments
6783     ;;
6784 esac
6785
6786 enable frame_thread_encoder
6787
6788 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6789
6790 check_deps $CONFIG_LIST       \
6791            $CONFIG_EXTRA      \
6792            $HAVE_LIST         \
6793            $ALL_COMPONENTS    \
6794
6795 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"
6796 enabled avresample && warn "Building with deprecated library libavresample"
6797
6798 case $target_os in
6799 haiku)
6800     disable memalign
6801     disable posix_memalign
6802     ;;
6803 *-dos|freedos|opendos)
6804     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6805         disable memalign
6806     fi
6807     ;;
6808 esac
6809
6810 flatten_extralibs(){
6811     nested_entries=
6812     list_name=$1
6813     eval list=\$${1}
6814     for entry in $list; do
6815         entry_copy=$entry
6816         resolve entry_copy
6817         flat_entries=
6818         for e in $entry_copy; do
6819             case $e in
6820                 *_extralibs) nested_entries="$nested_entries$e ";;
6821                           *) flat_entries="$flat_entries$e ";;
6822             esac
6823         done
6824         eval $entry="\$flat_entries"
6825     done
6826     append $list_name "$nested_entries"
6827
6828     resolve nested_entries
6829     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6830         flatten_extralibs $list_name
6831     fi
6832 }
6833
6834 flatten_extralibs_wrapper(){
6835     list_name=$1
6836     flatten_extralibs $list_name
6837     unique $list_name
6838     resolve $list_name
6839     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6840     eval printf \''%s'\' \""\$$list_name"\"
6841 }
6842
6843 for linkunit in $LIBRARY_LIST; do
6844     unset current_extralibs
6845     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6846     for comp in ${components}; do
6847         enabled $comp || continue
6848         comp_extralibs="${comp}_extralibs"
6849         append current_extralibs $comp_extralibs
6850     done
6851     eval prepend ${linkunit}_extralibs $current_extralibs
6852 done
6853
6854 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6855     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6856 done
6857
6858 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6859
6860 for thread in $THREADS_LIST; do
6861     if enabled $thread; then
6862         test -n "$thread_type" &&
6863             die "ERROR: Only one thread type must be selected." ||
6864             thread_type="$thread"
6865     fi
6866 done
6867
6868 if disabled stdatomic; then
6869     if enabled atomics_gcc; then
6870         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6871     elif enabled atomics_win32; then
6872         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6873     elif enabled atomics_suncc; then
6874         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6875     elif enabled pthreads; then
6876         add_compat atomics/pthread/stdatomic.o
6877         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6878     else
6879         enabled threads && die "Threading is enabled, but no atomics are available"
6880         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6881     fi
6882 fi
6883
6884 # Check if requested libraries were found.
6885 for lib in $AUTODETECT_LIBS; do
6886     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6887 done
6888
6889 enabled zlib && add_cppflags -DZLIB_CONST
6890
6891 # conditional library dependencies, in any order
6892 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6893 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6894 enabled afir_filter         && prepend avfilter_deps "avcodec"
6895 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6896 enabled aresample_filter    && prepend avfilter_deps "swresample"
6897 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6898 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6899 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6900 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6901 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6902 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6903 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6904 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6905 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6906 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6907 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6908 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6909 enabled pan_filter          && prepend avfilter_deps "swresample"
6910 enabled pp_filter           && prepend avfilter_deps "postproc"
6911 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6912 enabled resample_filter && prepend avfilter_deps "avresample"
6913 enabled sab_filter          && prepend avfilter_deps "swscale"
6914 enabled scale_filter    && prepend avfilter_deps "swscale"
6915 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6916 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6917 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6918 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6919 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6920 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6921 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6922 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6923 enabled spp_filter          && prepend avfilter_deps "avcodec"
6924 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6925 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6926 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6927 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6928
6929 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6930
6931 #FIXME
6932 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6933     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6934
6935 enabled opus_decoder    && prepend avcodec_deps "swresample"
6936
6937 # reorder the items at var $1 to align with the items order at var $2 .
6938 # die if an item at $1 is not at $2 .
6939 reorder_by(){
6940     eval rb_in=\$$1
6941     eval rb_ordered=\$$2
6942
6943     for rb in $rb_in; do
6944         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6945     done
6946
6947     rb_out=
6948     for rb in $rb_ordered; do
6949         is_in $rb $rb_in && rb_out="$rb_out$rb "
6950     done
6951     eval $1=\$rb_out
6952 }
6953
6954 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6955 # within a set of N items, N expansions are enough to expose a cycle.
6956 expand_deps(){
6957     unique ${1}_deps  # required for the early break test.
6958     for dummy in $LIBRARY_LIST; do  # N iteratios
6959         eval deps=\$${1}_deps
6960         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6961         unique ${1}_deps
6962         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6963     done
6964
6965     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6966     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6967 }
6968
6969 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6970 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6971
6972 map 'expand_deps $v' $LIBRARY_LIST
6973
6974 if test "$quiet" != "yes"; then
6975
6976 echo "install prefix            $prefix"
6977 echo "source path               $source_path"
6978 echo "C compiler                $cc"
6979 echo "C library                 $libc_type"
6980 if test "$host_cc" != "$cc"; then
6981     echo "host C compiler           $host_cc"
6982     echo "host C library            $host_libc_type"
6983 fi
6984 echo "ARCH                      $arch ($cpu)"
6985 if test "$build_suffix" != ""; then
6986     echo "build suffix              $build_suffix"
6987 fi
6988 if test "$progs_suffix" != ""; then
6989     echo "progs suffix              $progs_suffix"
6990 fi
6991 if test "$extra_version" != ""; then
6992     echo "version string suffix     $extra_version"
6993 fi
6994 echo "big-endian                ${bigendian-no}"
6995 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6996 if enabled x86; then
6997     echo "standalone assembly       ${x86asm-no}"
6998     echo "x86 assembler             ${x86asmexe}"
6999     echo "MMX enabled               ${mmx-no}"
7000     echo "MMXEXT enabled            ${mmxext-no}"
7001     echo "3DNow! enabled            ${amd3dnow-no}"
7002     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7003     echo "SSE enabled               ${sse-no}"
7004     echo "SSSE3 enabled             ${ssse3-no}"
7005     echo "AESNI enabled             ${aesni-no}"
7006     echo "AVX enabled               ${avx-no}"
7007     echo "AVX2 enabled              ${avx2-no}"
7008     echo "AVX-512 enabled           ${avx512-no}"
7009     echo "XOP enabled               ${xop-no}"
7010     echo "FMA3 enabled              ${fma3-no}"
7011     echo "FMA4 enabled              ${fma4-no}"
7012     echo "i686 features enabled     ${i686-no}"
7013     echo "CMOV is fast              ${fast_cmov-no}"
7014     echo "EBX available             ${ebx_available-no}"
7015     echo "EBP available             ${ebp_available-no}"
7016 fi
7017 if enabled aarch64; then
7018     echo "NEON enabled              ${neon-no}"
7019     echo "VFP enabled               ${vfp-no}"
7020 fi
7021 if enabled arm; then
7022     echo "ARMv5TE enabled           ${armv5te-no}"
7023     echo "ARMv6 enabled             ${armv6-no}"
7024     echo "ARMv6T2 enabled           ${armv6t2-no}"
7025     echo "VFP enabled               ${vfp-no}"
7026     echo "NEON enabled              ${neon-no}"
7027     echo "THUMB enabled             ${thumb-no}"
7028 fi
7029 if enabled mips; then
7030     echo "MIPS FPU enabled          ${mipsfpu-no}"
7031     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7032     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7033     echo "MIPS MSA enabled          ${msa-no}"
7034     echo "LOONGSON MMI enabled      ${mmi-no}"
7035 fi
7036 if enabled ppc; then
7037     echo "AltiVec enabled           ${altivec-no}"
7038     echo "VSX enabled               ${vsx-no}"
7039     echo "POWER8 enabled            ${power8-no}"
7040     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7041     echo "dcbzl available           ${dcbzl-no}"
7042 fi
7043 echo "debug symbols             ${debug-no}"
7044 echo "strip symbols             ${stripping-no}"
7045 echo "optimize for size         ${small-no}"
7046 echo "optimizations             ${optimizations-no}"
7047 echo "static                    ${static-no}"
7048 echo "shared                    ${shared-no}"
7049 echo "postprocessing support    ${postproc-no}"
7050 echo "network support           ${network-no}"
7051 echo "threading support         ${thread_type-no}"
7052 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7053 echo "texi2html enabled         ${texi2html-no}"
7054 echo "perl enabled              ${perl-no}"
7055 echo "pod2man enabled           ${pod2man-no}"
7056 echo "makeinfo enabled          ${makeinfo-no}"
7057 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7058 test -n "$random_seed" &&
7059     echo "random seed               ${random_seed}"
7060 echo
7061
7062 echo "External libraries:"
7063 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7064 echo
7065
7066 echo "External libraries providing hardware acceleration:"
7067 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7068 echo
7069
7070 echo "Libraries:"
7071 print_enabled '' $LIBRARY_LIST | print_in_columns
7072 echo
7073
7074 echo "Programs:"
7075 print_enabled '' $PROGRAM_LIST | print_in_columns
7076 echo
7077
7078 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7079     echo "Enabled ${type}s:"
7080     eval list=\$$(toupper $type)_LIST
7081     print_enabled '_*' $list | print_in_columns
7082     echo
7083 done
7084
7085 if test -n "$ignore_tests"; then
7086     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7087     echo "Ignored FATE tests:"
7088     echo $ignore_tests | print_in_columns
7089     echo
7090 fi
7091
7092 echo "License: $license"
7093
7094 fi # test "$quiet" != "yes"
7095
7096 if test -n "$WARNINGS"; then
7097     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7098     enabled fatal_warnings && exit 1
7099 fi
7100
7101 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7102
7103 esc(){
7104     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7105 }
7106
7107 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7108
7109 enabled stripping || strip="echo skipping strip"
7110 enabled stripping || striptype=""
7111
7112 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7113
7114 cat > ffbuild/config.mak <<EOF
7115 # Automatically generated by configure - do not modify!
7116 ifndef FFMPEG_CONFIG_MAK
7117 FFMPEG_CONFIG_MAK=1
7118 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7119 prefix=$prefix
7120 LIBDIR=\$(DESTDIR)$libdir
7121 SHLIBDIR=\$(DESTDIR)$shlibdir
7122 INCDIR=\$(DESTDIR)$incdir
7123 BINDIR=\$(DESTDIR)$bindir
7124 DATADIR=\$(DESTDIR)$datadir
7125 DOCDIR=\$(DESTDIR)$docdir
7126 MANDIR=\$(DESTDIR)$mandir
7127 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7128 INSTALL_NAME_DIR=$install_name_dir
7129 SRC_PATH=$source_path
7130 SRC_LINK=$source_link
7131 ifndef MAIN_MAKEFILE
7132 SRC_PATH:=\$(SRC_PATH:.%=..%)
7133 endif
7134 CC_IDENT=$cc_ident
7135 ARCH=$arch
7136 INTRINSICS=$intrinsics
7137 EXTERN_PREFIX=$extern_prefix
7138 CC=$cc
7139 CXX=$cxx
7140 AS=$as
7141 OBJCC=$objcc
7142 LD=$ld
7143 DEPCC=$dep_cc
7144 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7145 DEPAS=$as
7146 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7147 X86ASM=$x86asmexe
7148 DEPX86ASM=$x86asmexe
7149 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7150 AR=$ar
7151 ARFLAGS=$arflags
7152 AR_O=$ar_o
7153 AR_CMD=$ar
7154 NM_CMD=$nm
7155 RANLIB=$ranlib
7156 STRIP=$strip
7157 STRIPTYPE=$striptype
7158 NVCC=$nvcc
7159 CP=cp -p
7160 LN_S=$ln_s
7161 CPPFLAGS=$CPPFLAGS
7162 CFLAGS=$CFLAGS
7163 CXXFLAGS=$CXXFLAGS
7164 OBJCFLAGS=$OBJCFLAGS
7165 ASFLAGS=$ASFLAGS
7166 NVCCFLAGS=$nvccflags
7167 AS_C=$AS_C
7168 AS_O=$AS_O
7169 OBJCC_C=$OBJCC_C
7170 OBJCC_E=$OBJCC_E
7171 OBJCC_O=$OBJCC_O
7172 CC_C=$CC_C
7173 CC_E=$CC_E
7174 CC_O=$CC_O
7175 CXX_C=$CXX_C
7176 CXX_O=$CXX_O
7177 NVCC_C=$NVCC_C
7178 NVCC_O=$NVCC_O
7179 LD_O=$LD_O
7180 X86ASM_O=$X86ASM_O
7181 LD_LIB=$LD_LIB
7182 LD_PATH=$LD_PATH
7183 DLLTOOL=$dlltool
7184 WINDRES=$windres
7185 DEPWINDRES=$dep_cc
7186 DOXYGEN=$doxygen
7187 LDFLAGS=$LDFLAGS
7188 LDEXEFLAGS=$LDEXEFLAGS
7189 LDSOFLAGS=$LDSOFLAGS
7190 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7191 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7192 X86ASMFLAGS=$X86ASMFLAGS
7193 BUILDSUF=$build_suffix
7194 PROGSSUF=$progs_suffix
7195 FULLNAME=$FULLNAME
7196 LIBPREF=$LIBPREF
7197 LIBSUF=$LIBSUF
7198 LIBNAME=$LIBNAME
7199 SLIBPREF=$SLIBPREF
7200 SLIBSUF=$SLIBSUF
7201 EXESUF=$EXESUF
7202 EXTRA_VERSION=$extra_version
7203 CCDEP=$CCDEP
7204 CXXDEP=$CXXDEP
7205 CCDEP_FLAGS=$CCDEP_FLAGS
7206 ASDEP=$ASDEP
7207 ASDEP_FLAGS=$ASDEP_FLAGS
7208 X86ASMDEP=$X86ASMDEP
7209 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7210 CC_DEPFLAGS=$CC_DEPFLAGS
7211 AS_DEPFLAGS=$AS_DEPFLAGS
7212 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7213 HOSTCC=$host_cc
7214 HOSTLD=$host_ld
7215 HOSTCFLAGS=$host_cflags
7216 HOSTCPPFLAGS=$host_cppflags
7217 HOSTEXESUF=$HOSTEXESUF
7218 HOSTLDFLAGS=$host_ldflags
7219 HOSTEXTRALIBS=$host_extralibs
7220 DEPHOSTCC=$host_cc
7221 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7222 HOSTCCDEP=$HOSTCCDEP
7223 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7224 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7225 HOSTCC_C=$HOSTCC_C
7226 HOSTCC_O=$HOSTCC_O
7227 HOSTLD_O=$HOSTLD_O
7228 TARGET_EXEC=$target_exec $target_exec_args
7229 TARGET_PATH=$target_path
7230 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7231 CFLAGS-ffplay=${sdl2_cflags}
7232 CFLAGS_HEADERS=$CFLAGS_HEADERS
7233 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7234 EXTRALIBS=$extralibs
7235 COMPAT_OBJS=$compat_objs
7236 INSTALL=$install
7237 LIBTARGET=${LIBTARGET}
7238 SLIBNAME=${SLIBNAME}
7239 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7240 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7241 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7242 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7243 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7244 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7245 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7246 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7247 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7248 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7249 NOREDZONE_FLAGS=$noredzone_flags
7250 LIBFUZZER_PATH=$libfuzzer_path
7251 IGNORE_TESTS=$ignore_tests
7252 EOF
7253
7254 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7255
7256 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7257     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7258 done
7259
7260 cat > $TMPH <<EOF
7261 /* Automatically generated by configure - do not modify! */
7262 #ifndef FFMPEG_CONFIG_H
7263 #define FFMPEG_CONFIG_H
7264 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7265 #define FFMPEG_LICENSE "$(c_escape $license)"
7266 #define CONFIG_THIS_YEAR 2018
7267 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7268 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7269 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7270 #define av_restrict $restrict_keyword
7271 #define EXTERN_PREFIX "${extern_prefix}"
7272 #define EXTERN_ASM ${extern_prefix}
7273 #define BUILDSUF "$build_suffix"
7274 #define SLIBSUF "$SLIBSUF"
7275 #define HAVE_MMX2 HAVE_MMXEXT
7276 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7277 EOF
7278
7279 test -n "$assert_level" &&
7280     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7281
7282 test -n "$malloc_prefix" &&
7283     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7284
7285 if enabled x86asm; then
7286     append config_files $TMPASM
7287     cat > $TMPASM <<EOF
7288 ; Automatically generated by configure - do not modify!
7289 EOF
7290 fi
7291
7292 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7293
7294
7295 mkdir -p doc
7296 mkdir -p tests
7297 mkdir -p tests/api
7298 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7299
7300 print_config ARCH_   "$config_files" $ARCH_LIST
7301 print_config HAVE_   "$config_files" $HAVE_LIST
7302 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7303                                      $CONFIG_EXTRA      \
7304                                      $ALL_COMPONENTS    \
7305
7306 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7307 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7308
7309 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7310 cp_if_changed $TMPH config.h
7311 touch ffbuild/.config
7312
7313 enabled x86asm && cp_if_changed $TMPASM config.asm
7314
7315 cat > $TMPH <<EOF
7316 /* Generated by ffmpeg configure */
7317 #ifndef AVUTIL_AVCONFIG_H
7318 #define AVUTIL_AVCONFIG_H
7319 EOF
7320
7321 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7322
7323 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7324
7325 cp_if_changed $TMPH libavutil/avconfig.h
7326
7327 # full_filter_name_foo=vf_foo
7328 # full_filter_name_bar=asrc_bar
7329 # ...
7330 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7331
7332 # generate the lists of enabled components
7333 print_enabled_components(){
7334     file=$1
7335     struct_name=$2
7336     name=$3
7337     shift 3
7338     echo "static const $struct_name * const $name[] = {" > $TMPH
7339     for c in $*; do
7340         if enabled $c; then
7341             case $name in
7342                 filter_list)
7343                     eval c=\$full_filter_name_${c%_filter}
7344                 ;;
7345                 indev_list)
7346                     c=${c%_indev}_demuxer
7347                 ;;
7348                 outdev_list)
7349                     c=${c%_outdev}_muxer
7350                 ;;
7351             esac
7352             printf "    &ff_%s,\n" $c >> $TMPH
7353         fi
7354     done
7355     if [ "$name" = "filter_list" ]; then
7356         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7357             printf "    &ff_%s,\n" $c >> $TMPH
7358         done
7359     fi
7360     echo "    NULL };" >> $TMPH
7361     cp_if_changed $TMPH $file
7362 }
7363
7364 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7365 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7366 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7367 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7368 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7369 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7370 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7371 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7372 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7373
7374 # Settings for pkg-config files
7375
7376 cat > $TMPH <<EOF
7377 # Automatically generated by configure - do not modify!
7378 shared=$shared
7379 build_suffix=$build_suffix
7380 prefix=$prefix
7381 libdir=$libdir
7382 incdir=$incdir
7383 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7384 source_path=${source_path}
7385 LIBPREF=${LIBPREF}
7386 LIBSUF=${LIBSUF}
7387 extralibs_avutil="$avutil_extralibs"
7388 extralibs_avcodec="$avcodec_extralibs"
7389 extralibs_avformat="$avformat_extralibs"
7390 extralibs_avdevice="$avdevice_extralibs"
7391 extralibs_avfilter="$avfilter_extralibs"
7392 extralibs_avresample="$avresample_extralibs"
7393 extralibs_postproc="$postproc_extralibs"
7394 extralibs_swscale="$swscale_extralibs"
7395 extralibs_swresample="$swresample_extralibs"
7396 EOF
7397
7398 for lib in $LIBRARY_LIST; do
7399     lib_deps="$(eval echo \$${lib}_deps)"
7400     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7401 done
7402
7403 cp_if_changed $TMPH ffbuild/config.sh