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 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2819 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2820 xvmc_deps="X11_extensions_XvMClib_h"
2821
2822 h263_vaapi_hwaccel_deps="vaapi"
2823 h263_vaapi_hwaccel_select="h263_decoder"
2824 h263_videotoolbox_hwaccel_deps="videotoolbox"
2825 h263_videotoolbox_hwaccel_select="h263_decoder"
2826 h264_d3d11va_hwaccel_deps="d3d11va"
2827 h264_d3d11va_hwaccel_select="h264_decoder"
2828 h264_d3d11va2_hwaccel_deps="d3d11va"
2829 h264_d3d11va2_hwaccel_select="h264_decoder"
2830 h264_dxva2_hwaccel_deps="dxva2"
2831 h264_dxva2_hwaccel_select="h264_decoder"
2832 h264_nvdec_hwaccel_deps="nvdec"
2833 h264_nvdec_hwaccel_select="h264_decoder"
2834 h264_vaapi_hwaccel_deps="vaapi"
2835 h264_vaapi_hwaccel_select="h264_decoder"
2836 h264_vdpau_hwaccel_deps="vdpau"
2837 h264_vdpau_hwaccel_select="h264_decoder"
2838 h264_videotoolbox_hwaccel_deps="videotoolbox"
2839 h264_videotoolbox_hwaccel_select="h264_decoder"
2840 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2841 hevc_d3d11va_hwaccel_select="hevc_decoder"
2842 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2843 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2844 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2845 hevc_dxva2_hwaccel_select="hevc_decoder"
2846 hevc_nvdec_hwaccel_deps="nvdec"
2847 hevc_nvdec_hwaccel_select="hevc_decoder"
2848 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2849 hevc_vaapi_hwaccel_select="hevc_decoder"
2850 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2851 hevc_vdpau_hwaccel_select="hevc_decoder"
2852 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2853 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2854 mjpeg_nvdec_hwaccel_deps="nvdec"
2855 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2856 mjpeg_vaapi_hwaccel_deps="vaapi"
2857 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2858 mpeg_xvmc_hwaccel_deps="xvmc"
2859 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2860 mpeg1_nvdec_hwaccel_deps="nvdec"
2861 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2862 mpeg1_vdpau_hwaccel_deps="vdpau"
2863 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2864 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2865 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2866 mpeg1_xvmc_hwaccel_deps="xvmc"
2867 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2868 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2869 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2870 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2871 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2872 mpeg2_dxva2_hwaccel_deps="dxva2"
2873 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2874 mpeg2_nvdec_hwaccel_deps="nvdec"
2875 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2876 mpeg2_vaapi_hwaccel_deps="vaapi"
2877 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2878 mpeg2_vdpau_hwaccel_deps="vdpau"
2879 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2880 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2881 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2882 mpeg2_xvmc_hwaccel_deps="xvmc"
2883 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2884 mpeg4_nvdec_hwaccel_deps="nvdec"
2885 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2886 mpeg4_vaapi_hwaccel_deps="vaapi"
2887 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2888 mpeg4_vdpau_hwaccel_deps="vdpau"
2889 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2890 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2891 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2892 vc1_d3d11va_hwaccel_deps="d3d11va"
2893 vc1_d3d11va_hwaccel_select="vc1_decoder"
2894 vc1_d3d11va2_hwaccel_deps="d3d11va"
2895 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2896 vc1_dxva2_hwaccel_deps="dxva2"
2897 vc1_dxva2_hwaccel_select="vc1_decoder"
2898 vc1_nvdec_hwaccel_deps="nvdec"
2899 vc1_nvdec_hwaccel_select="vc1_decoder"
2900 vc1_vaapi_hwaccel_deps="vaapi"
2901 vc1_vaapi_hwaccel_select="vc1_decoder"
2902 vc1_vdpau_hwaccel_deps="vdpau"
2903 vc1_vdpau_hwaccel_select="vc1_decoder"
2904 vp8_nvdec_hwaccel_deps="nvdec"
2905 vp8_nvdec_hwaccel_select="vp8_decoder"
2906 vp8_vaapi_hwaccel_deps="vaapi"
2907 vp8_vaapi_hwaccel_select="vp8_decoder"
2908 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2909 vp9_d3d11va_hwaccel_select="vp9_decoder"
2910 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2911 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2912 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2913 vp9_dxva2_hwaccel_select="vp9_decoder"
2914 vp9_nvdec_hwaccel_deps="nvdec"
2915 vp9_nvdec_hwaccel_select="vp9_decoder"
2916 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2917 vp9_vaapi_hwaccel_select="vp9_decoder"
2918 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2919 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2920 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2921 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2922 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2923 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2924
2925 # hardware-accelerated codecs
2926 omx_deps="libdl pthreads"
2927 omx_rpi_select="omx"
2928 qsv_deps="libmfx"
2929 qsvdec_select="qsv"
2930 qsvenc_select="qsv"
2931 qsvvpp_select="qsv"
2932 vaapi_encode_deps="vaapi"
2933 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2934
2935 hwupload_cuda_filter_deps="ffnvcodec"
2936 scale_npp_filter_deps="ffnvcodec libnpp"
2937 scale_cuda_filter_deps="cuda_sdk"
2938 thumbnail_cuda_filter_deps="cuda_sdk"
2939 transpose_npp_filter_deps="ffnvcodec libnpp"
2940
2941 amf_deps_any="libdl LoadLibrary"
2942 nvenc_deps="ffnvcodec"
2943 nvenc_deps_any="libdl LoadLibrary"
2944 nvenc_encoder_deps="nvenc"
2945
2946 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2947 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2948 h264_amf_encoder_deps="amf"
2949 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2950 h264_cuvid_decoder_deps="cuvid"
2951 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2952 h264_mediacodec_decoder_deps="mediacodec"
2953 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2954 h264_mmal_decoder_deps="mmal"
2955 h264_nvenc_encoder_deps="nvenc"
2956 h264_omx_encoder_deps="omx"
2957 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2958 h264_qsv_encoder_select="qsvenc"
2959 h264_rkmpp_decoder_deps="rkmpp"
2960 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2961 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2962 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2963 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2964 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2965 hevc_amf_encoder_deps="amf"
2966 hevc_cuvid_decoder_deps="cuvid"
2967 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2968 hevc_mediacodec_decoder_deps="mediacodec"
2969 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2970 hevc_nvenc_encoder_deps="nvenc"
2971 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2972 hevc_qsv_encoder_select="hevcparse qsvenc"
2973 hevc_rkmpp_decoder_deps="rkmpp"
2974 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2975 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2976 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2977 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2978 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2979 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2980 mjpeg_cuvid_decoder_deps="cuvid"
2981 mjpeg_qsv_encoder_deps="libmfx"
2982 mjpeg_qsv_encoder_select="qsvenc"
2983 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2984 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2985 mpeg1_cuvid_decoder_deps="cuvid"
2986 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2987 mpeg2_crystalhd_decoder_select="crystalhd"
2988 mpeg2_cuvid_decoder_deps="cuvid"
2989 mpeg2_mmal_decoder_deps="mmal"
2990 mpeg2_mediacodec_decoder_deps="mediacodec"
2991 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2992 mpeg2_qsv_encoder_select="qsvenc"
2993 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2994 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2995 mpeg4_crystalhd_decoder_select="crystalhd"
2996 mpeg4_cuvid_decoder_deps="cuvid"
2997 mpeg4_mediacodec_decoder_deps="mediacodec"
2998 mpeg4_mmal_decoder_deps="mmal"
2999 mpeg4_omx_encoder_deps="omx"
3000 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3001 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3002 msmpeg4_crystalhd_decoder_select="crystalhd"
3003 nvenc_h264_encoder_select="h264_nvenc_encoder"
3004 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3005 vc1_crystalhd_decoder_select="crystalhd"
3006 vc1_cuvid_decoder_deps="cuvid"
3007 vc1_mmal_decoder_deps="mmal"
3008 vc1_qsv_decoder_select="qsvdec vc1_parser"
3009 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3010 vp8_cuvid_decoder_deps="cuvid"
3011 vp8_mediacodec_decoder_deps="mediacodec"
3012 vp8_qsv_decoder_select="qsvdec vp8_parser"
3013 vp8_rkmpp_decoder_deps="rkmpp"
3014 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3015 vp8_vaapi_encoder_select="vaapi_encode"
3016 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3017 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3018 vp9_cuvid_decoder_deps="cuvid"
3019 vp9_mediacodec_decoder_deps="mediacodec"
3020 vp9_rkmpp_decoder_deps="rkmpp"
3021 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3022 vp9_vaapi_encoder_select="vaapi_encode"
3023 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3024 wmv3_crystalhd_decoder_select="crystalhd"
3025
3026 # parsers
3027 aac_parser_select="adts_header"
3028 av1_parser_select="cbs_av1"
3029 h264_parser_select="golomb h264dsp h264parse"
3030 hevc_parser_select="hevcparse"
3031 mpegaudio_parser_select="mpegaudioheader"
3032 mpegvideo_parser_select="mpegvideo"
3033 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3034 vc1_parser_select="vc1dsp"
3035
3036 # bitstream_filters
3037 aac_adtstoasc_bsf_select="adts_header"
3038 av1_metadata_bsf_select="cbs_av1"
3039 eac3_core_bsf_select="ac3_parser"
3040 filter_units_bsf_select="cbs"
3041 h264_metadata_bsf_deps="const_nan"
3042 h264_metadata_bsf_select="cbs_h264"
3043 h264_redundant_pps_bsf_select="cbs_h264"
3044 hevc_metadata_bsf_select="cbs_h265"
3045 mjpeg2jpeg_bsf_select="jpegtables"
3046 mpeg2_metadata_bsf_select="cbs_mpeg2"
3047 trace_headers_bsf_select="cbs"
3048 vp9_metadata_bsf_select="cbs_vp9"
3049
3050 # external libraries
3051 aac_at_decoder_deps="audiotoolbox"
3052 aac_at_decoder_select="aac_adtstoasc_bsf"
3053 ac3_at_decoder_deps="audiotoolbox"
3054 ac3_at_decoder_select="ac3_parser"
3055 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3056 alac_at_decoder_deps="audiotoolbox"
3057 amr_nb_at_decoder_deps="audiotoolbox"
3058 avisynth_deps_any="libdl LoadLibrary"
3059 avisynth_demuxer_deps="avisynth"
3060 avisynth_demuxer_select="riffdec"
3061 eac3_at_decoder_deps="audiotoolbox"
3062 eac3_at_decoder_select="ac3_parser"
3063 gsm_ms_at_decoder_deps="audiotoolbox"
3064 ilbc_at_decoder_deps="audiotoolbox"
3065 mp1_at_decoder_deps="audiotoolbox"
3066 mp2_at_decoder_deps="audiotoolbox"
3067 mp3_at_decoder_deps="audiotoolbox"
3068 mp1_at_decoder_select="mpegaudioheader"
3069 mp2_at_decoder_select="mpegaudioheader"
3070 mp3_at_decoder_select="mpegaudioheader"
3071 pcm_alaw_at_decoder_deps="audiotoolbox"
3072 pcm_mulaw_at_decoder_deps="audiotoolbox"
3073 qdmc_at_decoder_deps="audiotoolbox"
3074 qdm2_at_decoder_deps="audiotoolbox"
3075 aac_at_encoder_deps="audiotoolbox"
3076 aac_at_encoder_select="audio_frame_queue"
3077 alac_at_encoder_deps="audiotoolbox"
3078 alac_at_encoder_select="audio_frame_queue"
3079 ilbc_at_encoder_deps="audiotoolbox"
3080 ilbc_at_encoder_select="audio_frame_queue"
3081 pcm_alaw_at_encoder_deps="audiotoolbox"
3082 pcm_alaw_at_encoder_select="audio_frame_queue"
3083 pcm_mulaw_at_encoder_deps="audiotoolbox"
3084 pcm_mulaw_at_encoder_select="audio_frame_queue"
3085 chromaprint_muxer_deps="chromaprint"
3086 h264_videotoolbox_encoder_deps="pthreads"
3087 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3088 hevc_videotoolbox_encoder_deps="pthreads"
3089 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3090 libaom_av1_decoder_deps="libaom"
3091 libaom_av1_encoder_deps="libaom"
3092 libaom_av1_encoder_select="extract_extradata_bsf"
3093 libcelt_decoder_deps="libcelt"
3094 libcodec2_decoder_deps="libcodec2"
3095 libcodec2_encoder_deps="libcodec2"
3096 libdav1d_decoder_deps="libdav1d"
3097 libdavs2_decoder_deps="libdavs2"
3098 libfdk_aac_decoder_deps="libfdk_aac"
3099 libfdk_aac_encoder_deps="libfdk_aac"
3100 libfdk_aac_encoder_select="audio_frame_queue"
3101 libgme_demuxer_deps="libgme"
3102 libgsm_decoder_deps="libgsm"
3103 libgsm_encoder_deps="libgsm"
3104 libgsm_ms_decoder_deps="libgsm"
3105 libgsm_ms_encoder_deps="libgsm"
3106 libilbc_decoder_deps="libilbc"
3107 libilbc_encoder_deps="libilbc"
3108 libkvazaar_encoder_deps="libkvazaar"
3109 libmodplug_demuxer_deps="libmodplug"
3110 libmp3lame_encoder_deps="libmp3lame"
3111 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3112 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3113 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3114 libopencore_amrnb_encoder_select="audio_frame_queue"
3115 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3116 libopenh264_decoder_deps="libopenh264"
3117 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3118 libopenh264_encoder_deps="libopenh264"
3119 libopenjpeg_decoder_deps="libopenjpeg"
3120 libopenjpeg_encoder_deps="libopenjpeg"
3121 libopenmpt_demuxer_deps="libopenmpt"
3122 libopus_decoder_deps="libopus"
3123 libopus_encoder_deps="libopus"
3124 libopus_encoder_select="audio_frame_queue"
3125 librsvg_decoder_deps="librsvg"
3126 libshine_encoder_deps="libshine"
3127 libshine_encoder_select="audio_frame_queue"
3128 libspeex_decoder_deps="libspeex"
3129 libspeex_encoder_deps="libspeex"
3130 libspeex_encoder_select="audio_frame_queue"
3131 libtheora_encoder_deps="libtheora"
3132 libtwolame_encoder_deps="libtwolame"
3133 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3134 libvorbis_decoder_deps="libvorbis"
3135 libvorbis_encoder_deps="libvorbis libvorbisenc"
3136 libvorbis_encoder_select="audio_frame_queue"
3137 libvpx_vp8_decoder_deps="libvpx"
3138 libvpx_vp8_encoder_deps="libvpx"
3139 libvpx_vp9_decoder_deps="libvpx"
3140 libvpx_vp9_encoder_deps="libvpx"
3141 libwavpack_encoder_deps="libwavpack"
3142 libwavpack_encoder_select="audio_frame_queue"
3143 libwebp_encoder_deps="libwebp"
3144 libwebp_anim_encoder_deps="libwebp"
3145 libx262_encoder_deps="libx262"
3146 libx264_encoder_deps="libx264"
3147 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3148 libx264rgb_encoder_select="libx264_encoder"
3149 libx265_encoder_deps="libx265"
3150 libxavs_encoder_deps="libxavs"
3151 libxavs2_encoder_deps="libxavs2"
3152 libxvid_encoder_deps="libxvid"
3153 libzvbi_teletext_decoder_deps="libzvbi"
3154 vapoursynth_demuxer_deps="vapoursynth"
3155 videotoolbox_suggest="coreservices"
3156 videotoolbox_deps="corefoundation coremedia corevideo"
3157 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3158
3159 # demuxers / muxers
3160 ac3_demuxer_select="ac3_parser"
3161 aiff_muxer_select="iso_media"
3162 asf_demuxer_select="riffdec"
3163 asf_o_demuxer_select="riffdec"
3164 asf_muxer_select="riffenc"
3165 asf_stream_muxer_select="asf_muxer"
3166 avi_demuxer_select="iso_media riffdec exif"
3167 avi_muxer_select="riffenc"
3168 caf_demuxer_select="iso_media riffdec"
3169 caf_muxer_select="iso_media"
3170 dash_muxer_select="mp4_muxer"
3171 dash_demuxer_deps="libxml2"
3172 dirac_demuxer_select="dirac_parser"
3173 dts_demuxer_select="dca_parser"
3174 dtshd_demuxer_select="dca_parser"
3175 dv_demuxer_select="dvprofile"
3176 dv_muxer_select="dvprofile"
3177 dxa_demuxer_select="riffdec"
3178 eac3_demuxer_select="ac3_parser"
3179 f4v_muxer_select="mov_muxer"
3180 fifo_muxer_deps="threads"
3181 flac_demuxer_select="flac_parser"
3182 hds_muxer_select="flv_muxer"
3183 hls_muxer_select="mpegts_muxer"
3184 hls_muxer_suggest="gcrypt openssl"
3185 image2_alias_pix_demuxer_select="image2_demuxer"
3186 image2_brender_pix_demuxer_select="image2_demuxer"
3187 ipod_muxer_select="mov_muxer"
3188 ismv_muxer_select="mov_muxer"
3189 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3190 matroska_audio_muxer_select="matroska_muxer"
3191 matroska_demuxer_select="iso_media riffdec"
3192 matroska_demuxer_suggest="bzlib lzo zlib"
3193 matroska_muxer_select="iso_media riffenc"
3194 mmf_muxer_select="riffenc"
3195 mov_demuxer_select="iso_media riffdec"
3196 mov_demuxer_suggest="zlib"
3197 mov_muxer_select="iso_media riffenc rtpenc_chain"
3198 mp3_demuxer_select="mpegaudio_parser"
3199 mp3_muxer_select="mpegaudioheader"
3200 mp4_muxer_select="mov_muxer"
3201 mpegts_demuxer_select="iso_media"
3202 mpegts_muxer_select="adts_muxer latm_muxer"
3203 mpegtsraw_demuxer_select="mpegts_demuxer"
3204 mxf_d10_muxer_select="mxf_muxer"
3205 mxf_opatom_muxer_select="mxf_muxer"
3206 nut_muxer_select="riffenc"
3207 nuv_demuxer_select="riffdec"
3208 oga_muxer_select="ogg_muxer"
3209 ogg_demuxer_select="dirac_parse"
3210 ogv_muxer_select="ogg_muxer"
3211 opus_muxer_select="ogg_muxer"
3212 psp_muxer_select="mov_muxer"
3213 rtp_demuxer_select="sdp_demuxer"
3214 rtp_muxer_select="golomb"
3215 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3216 rtsp_demuxer_select="http_protocol rtpdec"
3217 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3218 sap_demuxer_select="sdp_demuxer"
3219 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3220 sdp_demuxer_select="rtpdec"
3221 smoothstreaming_muxer_select="ismv_muxer"
3222 spdif_demuxer_select="adts_header"
3223 spdif_muxer_select="adts_header"
3224 spx_muxer_select="ogg_muxer"
3225 swf_demuxer_suggest="zlib"
3226 tak_demuxer_select="tak_parser"
3227 tg2_muxer_select="mov_muxer"
3228 tgp_muxer_select="mov_muxer"
3229 vobsub_demuxer_select="mpegps_demuxer"
3230 w64_demuxer_select="wav_demuxer"
3231 w64_muxer_select="wav_muxer"
3232 wav_demuxer_select="riffdec"
3233 wav_muxer_select="riffenc"
3234 webm_muxer_select="iso_media riffenc"
3235 webm_dash_manifest_demuxer_select="matroska_demuxer"
3236 wtv_demuxer_select="mpegts_demuxer riffdec"
3237 wtv_muxer_select="mpegts_muxer riffenc"
3238 xmv_demuxer_select="riffdec"
3239 xwma_demuxer_select="riffdec"
3240
3241 # indevs / outdevs
3242 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3243 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3244 alsa_indev_deps="alsa"
3245 alsa_outdev_deps="alsa"
3246 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3247 avfoundation_indev_suggest="coregraphics applicationservices"
3248 avfoundation_indev_extralibs="-framework Foundation"
3249 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3250 caca_outdev_deps="libcaca"
3251 decklink_deps_any="libdl LoadLibrary"
3252 decklink_indev_deps="decklink threads"
3253 decklink_indev_extralibs="-lstdc++"
3254 decklink_outdev_deps="decklink threads"
3255 decklink_outdev_suggest="libklvanc"
3256 decklink_outdev_extralibs="-lstdc++"
3257 libndi_newtek_indev_deps="libndi_newtek"
3258 libndi_newtek_indev_extralibs="-lndi"
3259 libndi_newtek_outdev_deps="libndi_newtek"
3260 libndi_newtek_outdev_extralibs="-lndi"
3261 dshow_indev_deps="IBaseFilter"
3262 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3263 fbdev_indev_deps="linux_fb_h"
3264 fbdev_outdev_deps="linux_fb_h"
3265 gdigrab_indev_deps="CreateDIBSection"
3266 gdigrab_indev_extralibs="-lgdi32"
3267 gdigrab_indev_select="bmp_decoder"
3268 iec61883_indev_deps="libiec61883"
3269 jack_indev_deps="libjack"
3270 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3271 kmsgrab_indev_deps="libdrm"
3272 lavfi_indev_deps="avfilter"
3273 libcdio_indev_deps="libcdio"
3274 libdc1394_indev_deps="libdc1394"
3275 openal_indev_deps="openal"
3276 opengl_outdev_deps="opengl"
3277 opengl_outdev_suggest="sdl2"
3278 oss_indev_deps_any="sys_soundcard_h"
3279 oss_outdev_deps_any="sys_soundcard_h"
3280 pulse_indev_deps="libpulse"
3281 pulse_outdev_deps="libpulse"
3282 sdl2_outdev_deps="sdl2"
3283 sndio_indev_deps="sndio"
3284 sndio_outdev_deps="sndio"
3285 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3286 v4l2_indev_suggest="libv4l2"
3287 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3288 v4l2_outdev_suggest="libv4l2"
3289 vfwcap_indev_deps="vfw32 vfwcap_defines"
3290 xcbgrab_indev_deps="libxcb"
3291 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3292 xv_outdev_deps="xlib"
3293
3294 # protocols
3295 async_protocol_deps="threads"
3296 bluray_protocol_deps="libbluray"
3297 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3298 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3299 ffrtmpcrypt_protocol_select="tcp_protocol"
3300 ffrtmphttp_protocol_conflict="librtmp_protocol"
3301 ffrtmphttp_protocol_select="http_protocol"
3302 ftp_protocol_select="tcp_protocol"
3303 gopher_protocol_select="network"
3304 http_protocol_select="tcp_protocol"
3305 http_protocol_suggest="zlib"
3306 httpproxy_protocol_select="tcp_protocol"
3307 httpproxy_protocol_suggest="zlib"
3308 https_protocol_select="tls_protocol"
3309 https_protocol_suggest="zlib"
3310 icecast_protocol_select="http_protocol"
3311 mmsh_protocol_select="http_protocol"
3312 mmst_protocol_select="network"
3313 rtmp_protocol_conflict="librtmp_protocol"
3314 rtmp_protocol_select="tcp_protocol"
3315 rtmp_protocol_suggest="zlib"
3316 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3317 rtmpe_protocol_suggest="zlib"
3318 rtmps_protocol_conflict="librtmp_protocol"
3319 rtmps_protocol_select="tls_protocol"
3320 rtmps_protocol_suggest="zlib"
3321 rtmpt_protocol_select="ffrtmphttp_protocol"
3322 rtmpt_protocol_suggest="zlib"
3323 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3324 rtmpte_protocol_suggest="zlib"
3325 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3326 rtmpts_protocol_suggest="zlib"
3327 rtp_protocol_select="udp_protocol"
3328 schannel_conflict="openssl gnutls libtls mbedtls"
3329 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3330 sctp_protocol_select="network"
3331 securetransport_conflict="openssl gnutls libtls mbedtls"
3332 srtp_protocol_select="rtp_protocol srtp"
3333 tcp_protocol_select="network"
3334 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3335 tls_protocol_select="tcp_protocol"
3336 udp_protocol_select="network"
3337 udplite_protocol_select="network"
3338 unix_protocol_deps="sys_un_h"
3339 unix_protocol_select="network"
3340
3341 # external library protocols
3342 librtmp_protocol_deps="librtmp"
3343 librtmpe_protocol_deps="librtmp"
3344 librtmps_protocol_deps="librtmp"
3345 librtmpt_protocol_deps="librtmp"
3346 librtmpte_protocol_deps="librtmp"
3347 libsmbclient_protocol_deps="libsmbclient gplv3"
3348 libsrt_protocol_deps="libsrt"
3349 libsrt_protocol_select="network"
3350 libssh_protocol_deps="libssh"
3351 libtls_conflict="openssl gnutls mbedtls"
3352
3353 # filters
3354 afftdn_filter_deps="avcodec"
3355 afftdn_filter_select="fft"
3356 afftfilt_filter_deps="avcodec"
3357 afftfilt_filter_select="fft"
3358 afir_filter_deps="avcodec"
3359 afir_filter_select="fft"
3360 amovie_filter_deps="avcodec avformat"
3361 aresample_filter_deps="swresample"
3362 ass_filter_deps="libass"
3363 atempo_filter_deps="avcodec"
3364 atempo_filter_select="rdft"
3365 avgblur_opencl_filter_deps="opencl"
3366 azmq_filter_deps="libzmq"
3367 blackframe_filter_deps="gpl"
3368 bm3d_filter_deps="avcodec"
3369 bm3d_filter_select="dct"
3370 boxblur_filter_deps="gpl"
3371 boxblur_opencl_filter_deps="opencl gpl"
3372 bs2b_filter_deps="libbs2b"
3373 colormatrix_filter_deps="gpl"
3374 convolution_opencl_filter_deps="opencl"
3375 convolve_filter_deps="avcodec"
3376 convolve_filter_select="fft"
3377 coreimage_filter_deps="coreimage appkit"
3378 coreimage_filter_extralibs="-framework OpenGL"
3379 coreimagesrc_filter_deps="coreimage appkit"
3380 coreimagesrc_filter_extralibs="-framework OpenGL"
3381 cover_rect_filter_deps="avcodec avformat gpl"
3382 cropdetect_filter_deps="gpl"
3383 deconvolve_filter_deps="avcodec"
3384 deconvolve_filter_select="fft"
3385 deinterlace_qsv_filter_deps="libmfx"
3386 deinterlace_vaapi_filter_deps="vaapi"
3387 delogo_filter_deps="gpl"
3388 denoise_vaapi_filter_deps="vaapi"
3389 deshake_filter_select="pixelutils"
3390 dilation_opencl_filter_deps="opencl"
3391 drawtext_filter_deps="libfreetype"
3392 drawtext_filter_suggest="libfontconfig libfribidi"
3393 elbg_filter_deps="avcodec"
3394 eq_filter_deps="gpl"
3395 erosion_opencl_filter_deps="opencl"
3396 fftfilt_filter_deps="avcodec"
3397 fftfilt_filter_select="rdft"
3398 fftdnoiz_filter_deps="avcodec"
3399 fftdnoiz_filter_select="fft"
3400 find_rect_filter_deps="avcodec avformat gpl"
3401 firequalizer_filter_deps="avcodec"
3402 firequalizer_filter_select="rdft"
3403 flite_filter_deps="libflite"
3404 framerate_filter_select="scene_sad"
3405 frei0r_filter_deps="frei0r libdl"
3406 frei0r_src_filter_deps="frei0r libdl"
3407 fspp_filter_deps="gpl"
3408 geq_filter_deps="gpl"
3409 histeq_filter_deps="gpl"
3410 hqdn3d_filter_deps="gpl"
3411 interlace_filter_deps="gpl"
3412 kerndeint_filter_deps="gpl"
3413 ladspa_filter_deps="ladspa libdl"
3414 lensfun_filter_deps="liblensfun version3"
3415 lv2_filter_deps="lv2"
3416 mcdeint_filter_deps="avcodec gpl"
3417 movie_filter_deps="avcodec avformat"
3418 mpdecimate_filter_deps="gpl"
3419 mpdecimate_filter_select="pixelutils"
3420 minterpolate_filter_select="scene_sad"
3421 mptestsrc_filter_deps="gpl"
3422 negate_filter_deps="lut_filter"
3423 nnedi_filter_deps="gpl"
3424 ocr_filter_deps="libtesseract"
3425 ocv_filter_deps="libopencv"
3426 openclsrc_filter_deps="opencl"
3427 overlay_opencl_filter_deps="opencl"
3428 overlay_qsv_filter_deps="libmfx"
3429 overlay_qsv_filter_select="qsvvpp"
3430 owdenoise_filter_deps="gpl"
3431 pan_filter_deps="swresample"
3432 perspective_filter_deps="gpl"
3433 phase_filter_deps="gpl"
3434 pp7_filter_deps="gpl"
3435 pp_filter_deps="gpl postproc"
3436 prewitt_opencl_filter_deps="opencl"
3437 procamp_vaapi_filter_deps="vaapi"
3438 program_opencl_filter_deps="opencl"
3439 pullup_filter_deps="gpl"
3440 removelogo_filter_deps="avcodec avformat swscale"
3441 repeatfields_filter_deps="gpl"
3442 resample_filter_deps="avresample"
3443 roberts_opencl_filter_deps="opencl"
3444 rubberband_filter_deps="librubberband"
3445 sab_filter_deps="gpl swscale"
3446 scale2ref_filter_deps="swscale"
3447 scale_filter_deps="swscale"
3448 scale_qsv_filter_deps="libmfx"
3449 select_filter_select="scene_sad"
3450 sharpness_vaapi_filter_deps="vaapi"
3451 showcqt_filter_deps="avcodec avformat swscale"
3452 showcqt_filter_suggest="libfontconfig libfreetype"
3453 showcqt_filter_select="fft"
3454 showfreqs_filter_deps="avcodec"
3455 showfreqs_filter_select="fft"
3456 showspectrum_filter_deps="avcodec"
3457 showspectrum_filter_select="fft"
3458 showspectrumpic_filter_deps="avcodec"
3459 showspectrumpic_filter_select="fft"
3460 signature_filter_deps="gpl avcodec avformat"
3461 smartblur_filter_deps="gpl swscale"
3462 sobel_opencl_filter_deps="opencl"
3463 sofalizer_filter_deps="libmysofa avcodec"
3464 sofalizer_filter_select="fft"
3465 spectrumsynth_filter_deps="avcodec"
3466 spectrumsynth_filter_select="fft"
3467 spp_filter_deps="gpl avcodec"
3468 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3469 sr_filter_deps="avformat swscale"
3470 sr_filter_select="dnn"
3471 stereo3d_filter_deps="gpl"
3472 subtitles_filter_deps="avformat avcodec libass"
3473 super2xsai_filter_deps="gpl"
3474 pixfmts_super2xsai_test_deps="super2xsai_filter"
3475 tinterlace_filter_deps="gpl"
3476 tinterlace_merge_test_deps="tinterlace_filter"
3477 tinterlace_pad_test_deps="tinterlace_filter"
3478 tonemap_filter_deps="const_nan"
3479 tonemap_opencl_filter_deps="opencl const_nan"
3480 unsharp_opencl_filter_deps="opencl"
3481 uspp_filter_deps="gpl avcodec"
3482 vaguedenoiser_filter_deps="gpl"
3483 vidstabdetect_filter_deps="libvidstab"
3484 vidstabtransform_filter_deps="libvidstab"
3485 libvmaf_filter_deps="libvmaf pthreads"
3486 zmq_filter_deps="libzmq"
3487 zoompan_filter_deps="swscale"
3488 zscale_filter_deps="libzimg const_nan"
3489 scale_vaapi_filter_deps="vaapi"
3490 vpp_qsv_filter_deps="libmfx"
3491 vpp_qsv_filter_select="qsvvpp"
3492 yadif_cuda_filter_deps="cuda_sdk"
3493
3494 # examples
3495 avio_dir_cmd_deps="avformat avutil"
3496 avio_reading_deps="avformat avcodec avutil"
3497 decode_audio_example_deps="avcodec avutil"
3498 decode_video_example_deps="avcodec avutil"
3499 demuxing_decoding_example_deps="avcodec avformat avutil"
3500 encode_audio_example_deps="avcodec avutil"
3501 encode_video_example_deps="avcodec avutil"
3502 extract_mvs_example_deps="avcodec avformat avutil"
3503 filter_audio_example_deps="avfilter avutil"
3504 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3505 filtering_video_example_deps="avfilter avcodec avformat avutil"
3506 http_multiclient_example_deps="avformat avutil fork"
3507 hw_decode_example_deps="avcodec avformat avutil"
3508 metadata_example_deps="avformat avutil"
3509 muxing_example_deps="avcodec avformat avutil swscale"
3510 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3511 remuxing_example_deps="avcodec avformat avutil"
3512 resampling_audio_example_deps="avutil swresample"
3513 scaling_video_example_deps="avutil swscale"
3514 transcode_aac_example_deps="avcodec avformat swresample"
3515 transcoding_example_deps="avfilter avcodec avformat avutil"
3516 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3517 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3518
3519 # EXTRALIBS_LIST
3520 cpu_init_extralibs="pthreads_extralibs"
3521 cws2fws_extralibs="zlib_extralibs"
3522
3523 # libraries, in any order
3524 avcodec_deps="avutil"
3525 avcodec_suggest="libm"
3526 avcodec_select="null_bsf"
3527 avdevice_deps="avformat avcodec avutil"
3528 avdevice_suggest="libm"
3529 avfilter_deps="avutil"
3530 avfilter_suggest="libm"
3531 avformat_deps="avcodec avutil"
3532 avformat_suggest="libm network zlib"
3533 avresample_deps="avutil"
3534 avresample_suggest="libm"
3535 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3536 postproc_deps="avutil gpl"
3537 postproc_suggest="libm"
3538 swresample_deps="avutil"
3539 swresample_suggest="libm libsoxr"
3540 swscale_deps="avutil"
3541 swscale_suggest="libm"
3542
3543 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3544 avfilter_extralibs="pthreads_extralibs"
3545 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3546
3547 # programs
3548 ffmpeg_deps="avcodec avfilter avformat"
3549 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3550                null_filter
3551                trim_filter"
3552 ffmpeg_suggest="ole32 psapi shell32"
3553 ffplay_deps="avcodec avformat swscale swresample sdl2"
3554 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3555 ffplay_suggest="shell32"
3556 ffprobe_deps="avcodec avformat"
3557 ffprobe_suggest="shell32"
3558
3559 # documentation
3560 podpages_deps="perl"
3561 manpages_deps="perl pod2man"
3562 htmlpages_deps="perl"
3563 htmlpages_deps_any="makeinfo_html texi2html"
3564 txtpages_deps="perl makeinfo"
3565 doc_deps_any="manpages htmlpages podpages txtpages"
3566
3567 # default parameters
3568
3569 logfile="ffbuild/config.log"
3570
3571 # installation paths
3572 prefix_default="/usr/local"
3573 bindir_default='${prefix}/bin'
3574 datadir_default='${prefix}/share/ffmpeg'
3575 docdir_default='${prefix}/share/doc/ffmpeg'
3576 incdir_default='${prefix}/include'
3577 libdir_default='${prefix}/lib'
3578 mandir_default='${prefix}/share/man'
3579
3580 # toolchain
3581 ar_default="ar"
3582 cc_default="gcc"
3583 cxx_default="g++"
3584 host_cc_default="gcc"
3585 doxygen_default="doxygen"
3586 install="install"
3587 ln_s_default="ln -s -f"
3588 nm_default="nm -g"
3589 pkg_config_default=pkg-config
3590 ranlib_default="ranlib"
3591 strip_default="strip"
3592 version_script='--version-script'
3593 objformat="elf32"
3594 x86asmexe_default="nasm"
3595 windres_default="windres"
3596 nvcc_default="nvcc"
3597 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3598 striptype="direct"
3599
3600 # OS
3601 target_os_default=$(tolower $(uname -s))
3602 host_os=$target_os_default
3603
3604 # machine
3605 if test "$target_os_default" = aix; then
3606     arch_default=$(uname -p)
3607     strip_default="strip -X32_64"
3608 else
3609     arch_default=$(uname -m)
3610 fi
3611 cpu="generic"
3612 intrinsics="none"
3613
3614 # configurable options
3615 enable $PROGRAM_LIST
3616 enable $DOCUMENT_LIST
3617 enable $EXAMPLE_LIST
3618 enable $(filter_out avresample $LIBRARY_LIST)
3619 enable stripping
3620
3621 enable asm
3622 enable debug
3623 enable doc
3624 enable faan faandct faanidct
3625 enable optimizations
3626 enable runtime_cpudetect
3627 enable safe_bitstream_reader
3628 enable static
3629 enable swscale_alpha
3630 enable valgrind_backtrace
3631
3632 sws_max_filter_size_default=256
3633 set_default sws_max_filter_size
3634
3635 # internal components are enabled by default
3636 enable $EXTRALIBS_LIST
3637
3638 # Avoid external, non-system, libraries getting enabled by dependency resolution
3639 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3640
3641 # build settings
3642 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3643 LIBPREF="lib"
3644 LIBSUF=".a"
3645 FULLNAME='$(NAME)$(BUILDSUF)'
3646 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3647 SLIBPREF="lib"
3648 SLIBSUF=".so"
3649 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3650 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3651 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3652 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3653 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3654 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3655 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3656
3657 asflags_filter=echo
3658 cflags_filter=echo
3659 ldflags_filter=echo
3660
3661 AS_C='-c'
3662 AS_O='-o $@'
3663 CC_C='-c'
3664 CC_E='-E -o $@'
3665 CC_O='-o $@'
3666 CXX_C='-c'
3667 CXX_O='-o $@'
3668 OBJCC_C='-c'
3669 OBJCC_E='-E -o $@'
3670 OBJCC_O='-o $@'
3671 X86ASM_O='-o $@'
3672 LD_O='-o $@'
3673 LD_LIB='-l%'
3674 LD_PATH='-L'
3675 HOSTCC_C='-c'
3676 HOSTCC_E='-E -o $@'
3677 HOSTCC_O='-o $@'
3678 HOSTLD_O='-o $@'
3679 NVCC_C='-c'
3680 NVCC_O='-o $@'
3681
3682 host_extralibs='-lm'
3683 host_cflags_filter=echo
3684 host_ldflags_filter=echo
3685
3686 target_path='$(CURDIR)'
3687
3688 # since the object filename is not given with the -MM flag, the compiler
3689 # is only able to print the basename, and we must add the path ourselves
3690 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3691 DEPFLAGS='-MM'
3692
3693 mkdir -p ffbuild
3694
3695 # find source path
3696 if test -f configure; then
3697     source_path=.
3698 else
3699     source_path=$(cd $(dirname "$0"); pwd)
3700     case "$source_path" in
3701         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3702     esac
3703     test -e "$source_path/config.h" &&
3704         die "Out of tree builds are impossible with config.h in source dir."
3705 fi
3706
3707 for v in "$@"; do
3708     r=${v#*=}
3709     l=${v%"$r"}
3710     r=$(sh_quote "$r")
3711     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3712 done
3713
3714 find_things_extern(){
3715     thing=$1
3716     pattern=$2
3717     file=$source_path/$3
3718     out=${4:-$thing}
3719     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3720 }
3721
3722 find_filters_extern(){
3723     file=$source_path/$1
3724     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3725     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3726 }
3727
3728 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3729 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3730 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3731 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3732 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3733 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3734 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3735 CODEC_LIST="
3736     $ENCODER_LIST
3737     $DECODER_LIST
3738 "
3739 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3740 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3741 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3742 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3743
3744 AVCODEC_COMPONENTS_LIST="
3745     $BSF_LIST
3746     $DECODER_LIST
3747     $ENCODER_LIST
3748     $HWACCEL_LIST
3749     $PARSER_LIST
3750 "
3751
3752 AVDEVICE_COMPONENTS_LIST="
3753     $INDEV_LIST
3754     $OUTDEV_LIST
3755 "
3756
3757 AVFILTER_COMPONENTS_LIST="
3758     $FILTER_LIST
3759 "
3760
3761 AVFORMAT_COMPONENTS_LIST="
3762     $DEMUXER_LIST
3763     $MUXER_LIST
3764     $PROTOCOL_LIST
3765 "
3766
3767 ALL_COMPONENTS="
3768     $AVCODEC_COMPONENTS_LIST
3769     $AVDEVICE_COMPONENTS_LIST
3770     $AVFILTER_COMPONENTS_LIST
3771     $AVFORMAT_COMPONENTS_LIST
3772 "
3773
3774 for n in $COMPONENT_LIST; do
3775     v=$(toupper ${n%s})_LIST
3776     eval enable \$$v
3777     eval ${n}_if_any="\$$v"
3778 done
3779
3780 enable $ARCH_EXT_LIST
3781
3782 die_unknown(){
3783     echo "Unknown option \"$1\"."
3784     echo "See $0 --help for available options."
3785     exit 1
3786 }
3787
3788 print_in_columns() {
3789     cols=$(expr $ncols / 24)
3790     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3791 }
3792
3793 show_list() {
3794     suffix=_$1
3795     shift
3796     echo $* | sed s/$suffix//g | print_in_columns
3797     exit 0
3798 }
3799
3800 rand_list(){
3801     IFS=', '
3802     set -- $*
3803     unset IFS
3804     for thing; do
3805         comp=${thing%:*}
3806         prob=${thing#$comp}
3807         prob=${prob#:}
3808         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3809         echo "prob ${prob:-0.5}"
3810         printf '%s\n' $comp
3811     done
3812 }
3813
3814 do_random(){
3815     action=$1
3816     shift
3817     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3818     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3819 }
3820
3821 for opt do
3822     optval="${opt#*=}"
3823     case "$opt" in
3824         --extra-ldflags=*)
3825             add_ldflags $optval
3826         ;;
3827         --extra-ldexeflags=*)
3828             add_ldexeflags $optval
3829         ;;
3830         --extra-ldsoflags=*)
3831             add_ldsoflags $optval
3832         ;;
3833         --extra-ldlibflags=*)
3834             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3835                  "removed in the future. Use --extra-ldsoflags instead."
3836             add_ldsoflags $optval
3837         ;;
3838         --extra-libs=*)
3839             add_extralibs $optval
3840         ;;
3841         --disable-devices)
3842             disable $INDEV_LIST $OUTDEV_LIST
3843         ;;
3844         --enable-debug=*)
3845             debuglevel="$optval"
3846         ;;
3847         --disable-programs)
3848             disable $PROGRAM_LIST
3849         ;;
3850         --disable-everything)
3851             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3852         ;;
3853         --disable-all)
3854             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3855             disable $LIBRARY_LIST $PROGRAM_LIST doc
3856             enable avutil
3857         ;;
3858         --enable-random|--disable-random)
3859             action=${opt%%-random}
3860             do_random ${action#--} $COMPONENT_LIST
3861         ;;
3862         --enable-random=*|--disable-random=*)
3863             action=${opt%%-random=*}
3864             do_random ${action#--} $optval
3865         ;;
3866         --enable-sdl)
3867             enable sdl2
3868         ;;
3869         --enable-*=*|--disable-*=*)
3870             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3871             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3872             eval list=\$$(toupper $thing)_LIST
3873             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3874             list=$(filter "$name" $list)
3875             [ "$list" = "" ] && warn "Option $opt did not match anything"
3876             $action $list
3877         ;;
3878         --enable-yasm|--disable-yasm)
3879             warn "The ${opt} option is only provided for compatibility and will be\n"\
3880                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3881             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3882         ;;
3883         --yasmexe=*)
3884             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3885                  "removed in the future. Use --x86asmexe instead."
3886             x86asmexe="$optval"
3887         ;;
3888         --enable-?*|--disable-?*)
3889             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3890             if is_in $option $COMPONENT_LIST; then
3891                 test $action = disable && action=unset
3892                 eval $action \$$(toupper ${option%s})_LIST
3893             elif is_in $option $CMDLINE_SELECT; then
3894                 $action $option
3895             else
3896                 die_unknown $opt
3897             fi
3898         ;;
3899         --list-*)
3900             NAME="${opt#--list-}"
3901             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3902             NAME=${NAME%s}
3903             eval show_list $NAME \$$(toupper $NAME)_LIST
3904         ;;
3905         --help|-h) show_help
3906         ;;
3907         --quiet|-q) quiet=yes
3908         ;;
3909         --fatal-warnings) enable fatal_warnings
3910         ;;
3911         --libfuzzer=*)
3912             libfuzzer_path="$optval"
3913         ;;
3914         *)
3915             optname="${opt%%=*}"
3916             optname="${optname#--}"
3917             optname=$(echo "$optname" | sed 's/-/_/g')
3918             if is_in $optname $CMDLINE_SET; then
3919                 eval $optname='$optval'
3920             elif is_in $optname $CMDLINE_APPEND; then
3921                 append $optname "$optval"
3922             else
3923                 die_unknown $opt
3924             fi
3925         ;;
3926     esac
3927 done
3928
3929 for e in $env; do
3930     eval "export $e"
3931 done
3932
3933 if disabled autodetect; then
3934
3935     # Unless iconv is explicitely disabled by the user, we still want to probe
3936     # for the iconv from the libc.
3937     disabled iconv || enable libc_iconv
3938
3939     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3940     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3941 fi
3942 # Mark specifically enabled, but normally autodetected libraries as requested.
3943 for lib in $AUTODETECT_LIBS; do
3944     enabled $lib && request $lib
3945 done
3946 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3947 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3948 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3949
3950 disabled logging && logfile=/dev/null
3951
3952 # command line configuration sanity checks
3953
3954 # we need to build at least one lib type
3955 if ! enabled_any static shared; then
3956     cat <<EOF
3957 At least one library type must be built.
3958 Specify --enable-static to build the static libraries or --enable-shared to
3959 build the shared libraries as well. To only build the shared libraries specify
3960 --disable-static in addition to --enable-shared.
3961 EOF
3962     exit 1
3963 fi
3964
3965 die_license_disabled() {
3966     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3967 }
3968
3969 die_license_disabled_gpl() {
3970     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3971 }
3972
3973 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3974 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3975
3976 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3977 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3978
3979 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3980
3981 if enabled nonfree; then
3982     license="nonfree and unredistributable"
3983 elif enabled gplv3; then
3984     license="GPL version 3 or later"
3985 elif enabled lgplv3; then
3986     license="LGPL version 3 or later"
3987 elif enabled gpl; then
3988     license="GPL version 2 or later"
3989 else
3990     license="LGPL version 2.1 or later"
3991 fi
3992
3993 enabled_all gnutls openssl &&
3994     die "GnuTLS and OpenSSL must not be enabled at the same time."
3995
3996 enabled_all gnutls mbedtls &&
3997     die "GnuTLS and mbedTLS must not be enabled at the same time."
3998
3999 enabled_all openssl mbedtls &&
4000     die "OpenSSL and mbedTLS must not be enabled at the same time."
4001
4002 # Disable all the library-specific components if the library itself
4003 # is disabled, see AVCODEC_LIST and following _LIST variables.
4004
4005 disable_components(){
4006     disabled ${1} && disable $(
4007         eval components="\$$(toupper ${1})_COMPONENTS"
4008         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4009     )
4010 }
4011
4012 map 'disable_components $v' $LIBRARY_LIST
4013
4014 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4015 set >> $logfile
4016
4017 test -n "$valgrind" && toolchain="valgrind-memcheck"
4018
4019 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4020     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4021     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4022 }
4023
4024 case "$toolchain" in
4025     *-asan)
4026         cc_default="${toolchain%-asan}"
4027         add_cflags  -fsanitize=address
4028         add_ldflags -fsanitize=address
4029     ;;
4030     *-msan)
4031         cc_default="${toolchain%-msan}"
4032         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4033         add_ldflags -fsanitize=memory
4034     ;;
4035     *-tsan)
4036         cc_default="${toolchain%-tsan}"
4037         add_cflags  -fsanitize=thread
4038         add_ldflags -fsanitize=thread
4039         case "$toolchain" in
4040             gcc-tsan)
4041                 add_cflags  -fPIC
4042                 add_ldflags -fPIC
4043                 ;;
4044         esac
4045     ;;
4046     *-usan)
4047         cc_default="${toolchain%-usan}"
4048         add_cflags  -fsanitize=undefined
4049         add_ldflags -fsanitize=undefined
4050     ;;
4051     valgrind-*)
4052         target_exec_default="valgrind"
4053         case "$toolchain" in
4054             valgrind-massif)
4055                 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"
4056                 ;;
4057             valgrind-memcheck)
4058                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4059                 ;;
4060         esac
4061     ;;
4062     msvc)
4063         # Check whether the current MSVC version needs the C99 converter.
4064         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4065         # support enough of C99 to build ffmpeg. Default to the new
4066         # behaviour if the regexp was unable to match anything, since this
4067         # successfully parses the version number of existing supported
4068         # versions that require the converter (MSVC 2010 and 2012).
4069         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4070         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4071             cc_default="cl"
4072             cxx_default="cl"
4073         else
4074             die "Unsupported MSVC version (2013 or newer required)"
4075         fi
4076         ld_default="$source_path/compat/windows/mslink"
4077         nm_default="dumpbin -symbols"
4078         ar_default="lib"
4079         case "$arch" in
4080         aarch64|arm64)
4081             as_default="armasm64"
4082             ;;
4083         arm*)
4084             as_default="armasm"
4085             ;;
4086         esac
4087         target_os_default="win32"
4088         # Use a relative path for TMPDIR. This makes sure all the
4089         # ffconf temp files are written with a relative path, avoiding
4090         # issues with msys/win32 path conversion for MSVC parameters
4091         # such as -Fo<file> or -out:<file>.
4092         TMPDIR=.
4093     ;;
4094     icl)
4095         cc_default="icl"
4096         ld_default="xilink"
4097         nm_default="dumpbin -symbols"
4098         ar_default="xilib"
4099         target_os_default="win32"
4100         TMPDIR=.
4101     ;;
4102     gcov)
4103         add_cflags  -fprofile-arcs -ftest-coverage
4104         add_ldflags -fprofile-arcs -ftest-coverage
4105     ;;
4106     llvm-cov)
4107         add_cflags -fprofile-arcs -ftest-coverage
4108         add_ldflags --coverage
4109     ;;
4110     hardened)
4111         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4112         add_cflags   -fno-strict-overflow -fstack-protector-all
4113         add_ldflags  -Wl,-z,relro -Wl,-z,now
4114         add_cflags   -fPIE
4115         add_ldexeflags -fPIE -pie
4116     ;;
4117     ?*)
4118         die "Unknown toolchain $toolchain"
4119     ;;
4120 esac
4121
4122 if test -n "$cross_prefix"; then
4123     test -n "$arch" && test -n "$target_os" ||
4124         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4125     enable cross_compile
4126 fi
4127
4128 ar_default="${cross_prefix}${ar_default}"
4129 cc_default="${cross_prefix}${cc_default}"
4130 cxx_default="${cross_prefix}${cxx_default}"
4131 nm_default="${cross_prefix}${nm_default}"
4132 pkg_config_default="${cross_prefix}${pkg_config_default}"
4133 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4134     ranlib_default="${cross_prefix}${ranlib_default} -D"
4135 else
4136     ranlib_default="${cross_prefix}${ranlib_default}"
4137 fi
4138 strip_default="${cross_prefix}${strip_default}"
4139 windres_default="${cross_prefix}${windres_default}"
4140
4141 sysinclude_default="${sysroot}/usr/include"
4142
4143 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4144     target_exec target_os x86asmexe nvcc
4145 enabled cross_compile || host_cc_default=$cc
4146 set_default host_cc
4147
4148 pkg_config_fail_message=""
4149 if ! $pkg_config --version >/dev/null 2>&1; then
4150     warn "$pkg_config not found, library detection may fail."
4151     pkg_config=false
4152 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4153     pkg_config_fail_message="
4154 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4155 fi
4156
4157 if test $doxygen != $doxygen_default && \
4158   ! $doxygen --version >/dev/null 2>&1; then
4159     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4160 fi
4161
4162 exesuf() {
4163     case $1 in
4164         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4165     esac
4166 }
4167
4168 EXESUF=$(exesuf $target_os)
4169 HOSTEXESUF=$(exesuf $host_os)
4170
4171 # set temporary file name
4172 : ${TMPDIR:=$TEMPDIR}
4173 : ${TMPDIR:=$TMP}
4174 : ${TMPDIR:=/tmp}
4175
4176 if [ -n "$tempprefix" ] ; then
4177     mktemp(){
4178         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4179         echo "$tmpname"
4180         mkdir "$tmpname"
4181     }
4182 elif ! test_cmd mktemp -u XXXXXX; then
4183     # simple replacement for missing mktemp
4184     # NOT SAFE FOR GENERAL USE
4185     mktemp(){
4186         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4187         echo "$tmpname"
4188         mkdir "$tmpname"
4189     }
4190 fi
4191
4192 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4193     die "Unable to create temporary directory in $TMPDIR."
4194
4195 tmpfile(){
4196     tmp="${FFTMPDIR}/test"$2
4197     (set -C; exec > $tmp) 2> /dev/null ||
4198         die "Unable to create temporary file in $FFTMPDIR."
4199     eval $1=$tmp
4200 }
4201
4202 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4203 trap 'exit 2' INT
4204
4205 tmpfile TMPASM .asm
4206 tmpfile TMPC   .c
4207 tmpfile TMPCPP .cpp
4208 tmpfile TMPE   $EXESUF
4209 tmpfile TMPH   .h
4210 tmpfile TMPM   .m
4211 tmpfile TMPO   .o
4212 tmpfile TMPS   .S
4213 tmpfile TMPSH  .sh
4214 tmpfile TMPV   .ver
4215
4216 unset -f mktemp
4217
4218 chmod +x $TMPE
4219
4220 # make sure we can execute files in $TMPDIR
4221 cat > $TMPSH 2>> $logfile <<EOF
4222 #! /bin/sh
4223 EOF
4224 chmod +x $TMPSH >> $logfile 2>&1
4225 if ! $TMPSH >> $logfile 2>&1; then
4226     cat <<EOF
4227 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4228 variable to another directory and make sure that it is not mounted noexec.
4229 EOF
4230     die "Sanity test failed."
4231 fi
4232
4233 armasm_flags(){
4234     for flag; do
4235         case $flag in
4236             # Filter out MSVC cl.exe options from cflags that shouldn't
4237             # be passed to gas-preprocessor
4238             -M[TD]*)                                            ;;
4239             *)                  echo $flag                      ;;
4240         esac
4241    done
4242 }
4243
4244 cparser_flags(){
4245     for flag; do
4246         case $flag in
4247             -Wno-switch)             echo -Wno-switch-enum ;;
4248             -Wno-format-zero-length) ;;
4249             -Wdisabled-optimization) ;;
4250             -Wno-pointer-sign)       echo -Wno-other ;;
4251             *)                       echo $flag ;;
4252         esac
4253     done
4254 }
4255
4256 msvc_common_flags(){
4257     for flag; do
4258         case $flag in
4259             # In addition to specifying certain flags under the compiler
4260             # specific filters, they must be specified here as well or else the
4261             # generic catch all at the bottom will print the original flag.
4262             -Wall)                ;;
4263             -Wextra)              ;;
4264             -std=c99)             ;;
4265             # Common flags
4266             -fomit-frame-pointer) ;;
4267             -g)                   echo -Z7 ;;
4268             -fno-math-errno)      ;;
4269             -fno-common)          ;;
4270             -fno-signed-zeros)    ;;
4271             -fPIC)                ;;
4272             -mthumb)              ;;
4273             -march=*)             ;;
4274             -lz)                  echo zlib.lib ;;
4275             -lx264)               echo libx264.lib ;;
4276             -lstdc++)             ;;
4277             -l*)                  echo ${flag#-l}.lib ;;
4278             -LARGEADDRESSAWARE)   echo $flag ;;
4279             -L*)                  echo -libpath:${flag#-L} ;;
4280             *)                    echo $flag ;;
4281         esac
4282     done
4283 }
4284
4285 msvc_flags(){
4286     msvc_common_flags "$@"
4287     for flag; do
4288         case $flag in
4289             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4290                                        -wd4554 ;;
4291             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4292                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4293                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4294                                        -wd4307 \
4295                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4296         esac
4297     done
4298 }
4299
4300 icl_flags(){
4301     msvc_common_flags "$@"
4302     for flag; do
4303         case $flag in
4304             # Despite what Intel's documentation says -Wall, which is supported
4305             # on Windows, does enable remarks so disable them here.
4306             -Wall)                echo $flag -Qdiag-disable:remark ;;
4307             -std=c99)             echo -Qstd=c99 ;;
4308             -flto)                echo -ipo ;;
4309         esac
4310     done
4311 }
4312
4313 icc_flags(){
4314     for flag; do
4315         case $flag in
4316             -flto)                echo -ipo ;;
4317             *)                    echo $flag ;;
4318         esac
4319     done
4320 }
4321
4322 suncc_flags(){
4323     for flag; do
4324         case $flag in
4325             -march=*|-mcpu=*)
4326                 case "${flag#*=}" in
4327                     native)                   echo -xtarget=native       ;;
4328                     v9|niagara)               echo -xarch=sparc          ;;
4329                     ultrasparc)               echo -xarch=sparcvis       ;;
4330                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4331                     i586|pentium)             echo -xchip=pentium        ;;
4332                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4333                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4334                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4335                     pentium4*)          echo -xtarget=pentium4           ;;
4336                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4337                     *-sse3)             echo -xarch=sse3                 ;;
4338                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4339                     bonnell)                   echo -xarch=ssse3         ;;
4340                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4341                     westmere)                  echo -xtarget=westmere    ;;
4342                     silvermont)                echo -xarch=sse4_2        ;;
4343                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4344                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4345                                                echo -xarch=avx           ;;
4346                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4347                     btver1)                    echo -xarch=amdsse4a      ;;
4348                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4349                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4350                     k8|opteron|athlon64|athlon-fx)
4351                                                echo -xarch=sse2a         ;;
4352                     athlon*)                   echo -xarch=pentium_proa  ;;
4353                 esac
4354                 ;;
4355             -std=c99)             echo -xc99              ;;
4356             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4357             -fPIC)                echo -KPIC -xcode=pic32 ;;
4358             -W*,*)                echo $flag              ;;
4359             -f*-*|-W*|-mimpure-text)                      ;;
4360             -shared)              echo -G                 ;;
4361             *)                    echo $flag              ;;
4362         esac
4363     done
4364 }
4365
4366 probe_cc(){
4367     pfx=$1
4368     _cc=$2
4369     first=$3
4370
4371     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4372     unset _ld_o _ldflags _ld_lib _ld_path
4373     unset _depflags _DEPCMD _DEPFLAGS
4374     _flags_filter=echo
4375
4376     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4377         true # no-op to avoid reading stdin in following checks
4378     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4379         _type=llvm_gcc
4380         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4381         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4382         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4383         _cflags_speed='-O3'
4384         _cflags_size='-Os'
4385     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4386         _type=gcc
4387         gcc_version=$($_cc --version | head -n1)
4388         gcc_basever=$($_cc -dumpversion)
4389         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4390         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4391         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4392         case $gcc_basever in
4393             2) ;;
4394             2.*) ;;
4395             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4396         esac
4397         if [ "$first" = true ]; then
4398             case $gcc_basever in
4399                 4.2*)
4400                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4401             esac
4402         fi
4403         _cflags_speed='-O3'
4404         _cflags_size='-Os'
4405     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4406         _type=icc
4407         _ident=$($_cc --version | head -n1)
4408         _depflags='-MMD'
4409         _cflags_speed='-O3'
4410         _cflags_size='-Os'
4411         _cflags_noopt='-O1'
4412         _flags_filter=icc_flags
4413     elif $_cc -v 2>&1 | grep -q xlc; then
4414         _type=xlc
4415         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4416         _cflags_speed='-O5'
4417         _cflags_size='-O5 -qcompact'
4418     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4419         test -d "$sysroot" || die "No valid sysroot specified."
4420         _type=armcc
4421         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4422         armcc_conf="$PWD/armcc.conf"
4423         $_cc --arm_linux_configure                 \
4424              --arm_linux_config_file="$armcc_conf" \
4425              --configure_sysroot="$sysroot"        \
4426              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4427              die "Error creating armcc configuration file."
4428         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4429         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4430         as_default="${cross_prefix}gcc"
4431         _depflags='-MMD'
4432         _cflags_speed='-O3'
4433         _cflags_size='-Os'
4434     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4435         _type=clang
4436         _ident=$($_cc --version 2>/dev/null | head -n1)
4437         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4438         _cflags_speed='-O3'
4439         _cflags_size='-Oz'
4440     elif $_cc -V 2>&1 | grep -q Sun; then
4441         _type=suncc
4442         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4443         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4444         _DEPFLAGS='-xM1 -xc99'
4445         _ldflags='-std=c99'
4446         _cflags_speed='-O5'
4447         _cflags_size='-O5 -xspace'
4448         _flags_filter=suncc_flags
4449     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4450         _type=pathscale
4451         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4452         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4453         _cflags_speed='-O2'
4454         _cflags_size='-Os'
4455         _flags_filter='filter_out -Wdisabled-optimization'
4456     elif $_cc -v 2>&1 | grep -q Open64; then
4457         _type=open64
4458         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4459         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4460         _cflags_speed='-O2'
4461         _cflags_size='-Os'
4462         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4463     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4464         _type=armasm
4465         _ident=$($_cc | head -n1)
4466         # 4509: "This form of conditional instruction is deprecated"
4467         _flags="-nologo -ignore 4509"
4468         _flags_filter=armasm_flags
4469     elif $_cc 2>&1 | grep -q Intel; then
4470         _type=icl
4471         _ident=$($_cc 2>&1 | head -n1)
4472         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4473         # Not only is O3 broken on 13.x+ but it is slower on all previous
4474         # versions (tested) as well.
4475         _cflags_speed="-O2"
4476         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4477         if $_cc 2>&1 | grep -q Linker; then
4478             _ld_o='-out:$@'
4479         else
4480             _ld_o='-Fe$@'
4481         fi
4482         _cc_o='-Fo$@'
4483         _cc_e='-P'
4484         _flags_filter=icl_flags
4485         _ld_lib='lib%.a'
4486         _ld_path='-libpath:'
4487         # -Qdiag-error to make icl error when seeing certain unknown arguments
4488         _flags='-nologo -Qdiag-error:4044,10157'
4489         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4490         # with MSVC which enables it by default.
4491         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4492         disable stripping
4493     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4494         # lld can emulate multiple different linkers; in ms link.exe mode,
4495         # the -? parameter gives the help output which contains an identifyable
4496         # string, while it gives an error in other modes.
4497         _type=lld-link
4498         # The link.exe mode doesn't have a switch for getting the version,
4499         # but we can force it back to gnu mode and get the version from there.
4500         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4501         _ld_o='-out:$@'
4502         _flags_filter=msvc_flags
4503         _ld_lib='lib%.a'
4504         _ld_path='-libpath:'
4505     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4506         _type=msvc
4507         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4508         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4509         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4510         _cflags_speed="-O2"
4511         _cflags_size="-O1"
4512         _cflags_noopt="-O1"
4513         if $_cc -nologo- 2>&1 | grep -q Linker; then
4514             _ld_o='-out:$@'
4515         else
4516             _ld_o='-Fe$@'
4517         fi
4518         _cc_o='-Fo$@'
4519         _cc_e='-P -Fi$@'
4520         _flags_filter=msvc_flags
4521         _ld_lib='lib%.a'
4522         _ld_path='-libpath:'
4523         _flags='-nologo'
4524         disable stripping
4525     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4526         _type=cparser
4527         _ident=$($_cc --version | head -n1)
4528         _depflags='-MMD'
4529         _cflags_speed='-O4'
4530         _cflags_size='-O2'
4531         _flags_filter=cparser_flags
4532     fi
4533
4534     eval ${pfx}_type=\$_type
4535     eval ${pfx}_ident=\$_ident
4536 }
4537
4538 set_ccvars(){
4539     eval ${1}_C=\${_cc_c-\${${1}_C}}
4540     eval ${1}_E=\${_cc_e-\${${1}_E}}
4541     eval ${1}_O=\${_cc_o-\${${1}_O}}
4542
4543     if [ -n "$_depflags" ]; then
4544         eval ${1}_DEPFLAGS=\$_depflags
4545     else
4546         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4547         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4548         eval DEP${1}FLAGS=\$_flags
4549     fi
4550 }
4551
4552 probe_cc cc "$cc" "true"
4553 cflags_filter=$_flags_filter
4554 cflags_speed=$_cflags_speed
4555 cflags_size=$_cflags_size
4556 cflags_noopt=$_cflags_noopt
4557 add_cflags $_flags $_cflags
4558 cc_ldflags=$_ldflags
4559 set_ccvars CC
4560 set_ccvars CXX
4561
4562 probe_cc hostcc "$host_cc"
4563 host_cflags_filter=$_flags_filter
4564 host_cflags_speed=$_cflags_speed
4565 add_host_cflags  $_flags $_cflags
4566 set_ccvars HOSTCC
4567
4568 test -n "$cc_type" && enable $cc_type ||
4569     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4570
4571 : ${as_default:=$cc}
4572 : ${objcc_default:=$cc}
4573 : ${dep_cc_default:=$cc}
4574 : ${ld_default:=$cc}
4575 : ${host_ld_default:=$host_cc}
4576 set_default ar as objcc dep_cc ld ln_s host_ld windres
4577
4578 probe_cc as "$as"
4579 asflags_filter=$_flags_filter
4580 add_asflags $_flags $_cflags
4581 set_ccvars AS
4582
4583 probe_cc objcc "$objcc"
4584 objcflags_filter=$_flags_filter
4585 add_objcflags $_flags $_cflags
4586 set_ccvars OBJC
4587
4588 probe_cc ld "$ld"
4589 ldflags_filter=$_flags_filter
4590 add_ldflags $_flags $_ldflags
4591 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4592 LD_O=${_ld_o-$LD_O}
4593 LD_LIB=${_ld_lib-$LD_LIB}
4594 LD_PATH=${_ld_path-$LD_PATH}
4595
4596 probe_cc hostld "$host_ld"
4597 host_ldflags_filter=$_flags_filter
4598 add_host_ldflags $_flags $_ldflags
4599 HOSTLD_O=${_ld_o-$HOSTLD_O}
4600
4601 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4602     probe_cc depcc "$dep_cc"
4603     CCDEP=${_DEPCMD:-$DEPCMD}
4604     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4605     DEPCCFLAGS=$_flags
4606 fi
4607
4608 if $ar 2>&1 | grep -q Microsoft; then
4609     arflags="-nologo"
4610     ar_o='-out:$@'
4611 elif $ar 2>&1 | grep -q "\[D\] "; then
4612     arflags="rcD"
4613     ar_o='$@'
4614 else
4615     arflags="rc"
4616     ar_o='$@'
4617 fi
4618
4619 add_cflags $extra_cflags
4620 add_cxxflags $extra_cxxflags
4621 add_objcflags $extra_objcflags
4622 add_asflags $extra_cflags
4623
4624 if test -n "$sysroot"; then
4625     case "$cc_type" in
4626         gcc|llvm_gcc|clang)
4627             add_cppflags --sysroot="$sysroot"
4628             add_ldflags --sysroot="$sysroot"
4629         ;;
4630     esac
4631 fi
4632
4633 if test "$cpu" = host; then
4634     enabled cross_compile &&
4635         die "--cpu=host makes no sense when cross-compiling."
4636
4637     case "$cc_type" in
4638         gcc|llvm_gcc)
4639             check_native(){
4640                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4641                 sed -n "/cc1.*$1=/{
4642                             s/.*$1=\\([^ ]*\\).*/\\1/
4643                             p
4644                             q
4645                         }" $TMPE
4646             }
4647             cpu=$(check_native -march || check_native -mcpu)
4648         ;;
4649         clang)
4650             check_native(){
4651                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4652                 sed -n "/cc1.*-target-cpu /{
4653                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4654                             p
4655                             q
4656                         }" $TMPE
4657             }
4658             cpu=$(check_native -march)
4659         ;;
4660     esac
4661
4662     test "${cpu:-host}" = host &&
4663         die "--cpu=host not supported with compiler $cc"
4664 fi
4665
4666 # Deal with common $arch aliases
4667 case "$arch" in
4668     aarch64|arm64)
4669         arch="aarch64"
4670     ;;
4671     arm*|iPad*|iPhone*)
4672         arch="arm"
4673     ;;
4674     mips*|IP*)
4675         case "$arch" in
4676         *el)
4677             add_cppflags -EL
4678             add_ldflags -EL
4679         ;;
4680         *eb)
4681             add_cppflags -EB
4682             add_ldflags -EB
4683         ;;
4684         esac
4685         arch="mips"
4686     ;;
4687     parisc*|hppa*)
4688         arch="parisc"
4689     ;;
4690     "Power Macintosh"|ppc*|powerpc*)
4691         arch="ppc"
4692     ;;
4693     s390|s390x)
4694         arch="s390"
4695     ;;
4696     sh4|sh)
4697         arch="sh4"
4698     ;;
4699     sun4*|sparc*)
4700         arch="sparc"
4701     ;;
4702     tilegx|tile-gx)
4703         arch="tilegx"
4704     ;;
4705     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4706         arch="x86"
4707     ;;
4708 esac
4709
4710 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4711 enable $arch
4712
4713 # Add processor-specific flags
4714 if enabled aarch64; then
4715
4716     case $cpu in
4717         armv*)
4718             cpuflags="-march=$cpu"
4719         ;;
4720         *)
4721             cpuflags="-mcpu=$cpu"
4722         ;;
4723     esac
4724
4725 elif enabled alpha; then
4726
4727     cpuflags="-mcpu=$cpu"
4728
4729 elif enabled arm; then
4730
4731     check_arm_arch() {
4732         test_cpp_condition stddef.h \
4733             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4734             $cpuflags
4735     }
4736
4737     probe_arm_arch() {
4738         if   check_arm_arch 4;        then echo armv4
4739         elif check_arm_arch 4T;       then echo armv4t
4740         elif check_arm_arch 5;        then echo armv5
4741         elif check_arm_arch 5E;       then echo armv5e
4742         elif check_arm_arch 5T;       then echo armv5t
4743         elif check_arm_arch 5TE;      then echo armv5te
4744         elif check_arm_arch 5TEJ;     then echo armv5te
4745         elif check_arm_arch 6;        then echo armv6
4746         elif check_arm_arch 6J;       then echo armv6j
4747         elif check_arm_arch 6K;       then echo armv6k
4748         elif check_arm_arch 6Z;       then echo armv6z
4749         elif check_arm_arch 6KZ;      then echo armv6zk
4750         elif check_arm_arch 6ZK;      then echo armv6zk
4751         elif check_arm_arch 6T2;      then echo armv6t2
4752         elif check_arm_arch 7;        then echo armv7
4753         elif check_arm_arch 7A  7_A;  then echo armv7-a
4754         elif check_arm_arch 7S;       then echo armv7-a
4755         elif check_arm_arch 7R  7_R;  then echo armv7-r
4756         elif check_arm_arch 7M  7_M;  then echo armv7-m
4757         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4758         elif check_arm_arch 8A  8_A;  then echo armv8-a
4759         fi
4760     }
4761
4762     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4763
4764     case $cpu in
4765         armv*)
4766             cpuflags="-march=$cpu"
4767             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4768         ;;
4769         *)
4770             cpuflags="-mcpu=$cpu"
4771             case $cpu in
4772                 cortex-a*)                               subarch=armv7a  ;;
4773                 cortex-r*)                               subarch=armv7r  ;;
4774                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4775                 arm11*)                                  subarch=armv6   ;;
4776                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4777                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4778                 *)                             subarch=$(probe_arm_arch) ;;
4779             esac
4780         ;;
4781     esac
4782
4783     case "$subarch" in
4784         armv5t*)    enable fast_clz                ;;
4785         armv[6-8]*)
4786             enable fast_clz
4787             disabled fast_unaligned || enable fast_unaligned
4788             ;;
4789     esac
4790
4791 elif enabled avr32; then
4792
4793     case $cpu in
4794         ap7[02]0[0-2])
4795             subarch="avr32_ap"
4796             cpuflags="-mpart=$cpu"
4797         ;;
4798         ap)
4799             subarch="avr32_ap"
4800             cpuflags="-march=$cpu"
4801         ;;
4802         uc3[ab]*)
4803             subarch="avr32_uc"
4804             cpuflags="-mcpu=$cpu"
4805         ;;
4806         uc)
4807             subarch="avr32_uc"
4808             cpuflags="-march=$cpu"
4809         ;;
4810     esac
4811
4812 elif enabled bfin; then
4813
4814     cpuflags="-mcpu=$cpu"
4815
4816 elif enabled mips; then
4817
4818     cpuflags="-march=$cpu"
4819
4820     if [ "$cpu" != "generic" ]; then
4821         disable mips32r2
4822         disable mips32r5
4823         disable mips64r2
4824         disable mips32r6
4825         disable mips64r6
4826         disable loongson2
4827         disable loongson3
4828
4829         case $cpu in
4830             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4831                 enable mips32r2
4832                 disable msa
4833             ;;
4834             p5600|i6400|p6600)
4835                 disable mipsdsp
4836                 disable mipsdspr2
4837             ;;
4838             loongson*)
4839                 enable loongson2
4840                 enable loongson3
4841                 enable local_aligned
4842                 enable simd_align_16
4843                 enable fast_64bit
4844                 enable fast_clz
4845                 enable fast_cmov
4846                 enable fast_unaligned
4847                 disable aligned_stack
4848                 disable mipsfpu
4849                 disable mipsdsp
4850                 disable mipsdspr2
4851                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4852                 if [ $cc == gcc ]; then
4853                     gcc_version=$(gcc -dumpversion)
4854                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4855                         expensive_optimization_flag=""
4856                     else
4857                         expensive_optimization_flag="-fno-expensive-optimizations"
4858                     fi
4859                 fi
4860                 case $cpu in
4861                     loongson3*)
4862                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4863                     ;;
4864                     loongson2e)
4865                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4866                     ;;
4867                     loongson2f)
4868                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4869                     ;;
4870                 esac
4871             ;;
4872             *)
4873                 # Unknown CPU. Disable everything.
4874                 warn "unknown CPU. Disabling all MIPS optimizations."
4875                 disable mipsfpu
4876                 disable mipsdsp
4877                 disable mipsdspr2
4878                 disable msa
4879                 disable mmi
4880             ;;
4881         esac
4882
4883         case $cpu in
4884             24kc)
4885                 disable mipsfpu
4886                 disable mipsdsp
4887                 disable mipsdspr2
4888             ;;
4889             24kf*)
4890                 disable mipsdsp
4891                 disable mipsdspr2
4892             ;;
4893             24kec|34kc|1004kc)
4894                 disable mipsfpu
4895                 disable mipsdspr2
4896             ;;
4897             24kef*|34kf*|1004kf*)
4898                 disable mipsdspr2
4899             ;;
4900             74kc)
4901                 disable mipsfpu
4902             ;;
4903             p5600)
4904                 enable mips32r5
4905                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4906             ;;
4907             i6400)
4908                 enable mips64r6
4909                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4910             ;;
4911             p6600)
4912                 enable mips64r6
4913                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4914             ;;
4915         esac
4916     else
4917         # We do not disable anything. Is up to the user to disable the unwanted features.
4918         warn 'generic cpu selected'
4919     fi
4920
4921 elif enabled ppc; then
4922
4923     disable ldbrx
4924
4925     case $(tolower $cpu) in
4926         601|ppc601|powerpc601)
4927             cpuflags="-mcpu=601"
4928             disable altivec
4929         ;;
4930         603*|ppc603*|powerpc603*)
4931             cpuflags="-mcpu=603"
4932             disable altivec
4933         ;;
4934         604*|ppc604*|powerpc604*)
4935             cpuflags="-mcpu=604"
4936             disable altivec
4937         ;;
4938         g3|75*|ppc75*|powerpc75*)
4939             cpuflags="-mcpu=750"
4940             disable altivec
4941         ;;
4942         g4|745*|ppc745*|powerpc745*)
4943             cpuflags="-mcpu=7450"
4944             disable vsx
4945         ;;
4946         74*|ppc74*|powerpc74*)
4947             cpuflags="-mcpu=7400"
4948             disable vsx
4949         ;;
4950         g5|970|ppc970|powerpc970)
4951             cpuflags="-mcpu=970"
4952             disable vsx
4953         ;;
4954         power[3-6]*)
4955             cpuflags="-mcpu=$cpu"
4956             disable vsx
4957         ;;
4958         power[7-8]*)
4959             cpuflags="-mcpu=$cpu"
4960         ;;
4961         cell)
4962             cpuflags="-mcpu=cell"
4963             enable ldbrx
4964             disable vsx
4965         ;;
4966         e500mc)
4967             cpuflags="-mcpu=e500mc"
4968             disable altivec
4969         ;;
4970         e500v2)
4971             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4972             disable altivec
4973             disable dcbzl
4974         ;;
4975         e500)
4976             cpuflags="-mcpu=8540 -mhard-float"
4977             disable altivec
4978             disable dcbzl
4979         ;;
4980     esac
4981
4982 elif enabled sparc; then
4983
4984     case $cpu in
4985         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4986             cpuflags="-mcpu=$cpu"
4987         ;;
4988         ultrasparc*|niagara[234])
4989             cpuflags="-mcpu=$cpu"
4990         ;;
4991     esac
4992
4993 elif enabled x86; then
4994
4995     case $cpu in
4996         i[345]86|pentium)
4997             cpuflags="-march=$cpu"
4998             disable i686
4999             disable mmx
5000         ;;
5001         # targets that do NOT support nopl and conditional mov (cmov)
5002         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5003             cpuflags="-march=$cpu"
5004             disable i686
5005         ;;
5006         # targets that do support nopl and conditional mov (cmov)
5007         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5008         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5009         |amdfam10|barcelona|b[dt]ver*|znver*)
5010             cpuflags="-march=$cpu"
5011             enable i686
5012             enable fast_cmov
5013         ;;
5014         # targets that do support conditional mov but on which it's slow
5015         pentium4|pentium4m|prescott|nocona)
5016             cpuflags="-march=$cpu"
5017             enable i686
5018             disable fast_cmov
5019         ;;
5020     esac
5021
5022 fi
5023
5024 if [ "$cpu" != generic ]; then
5025     add_cflags  $cpuflags
5026     add_asflags $cpuflags
5027     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5028 fi
5029
5030 # compiler sanity check
5031 test_exec <<EOF
5032 int main(void){ return 0; }
5033 EOF
5034 if test "$?" != 0; then
5035     echo "$cc is unable to create an executable file."
5036     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5037         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5038         echo "Only do this if you know what cross compiling means."
5039     fi
5040     die "C compiler test failed."
5041 fi
5042
5043 add_cppflags -D_ISOC99_SOURCE
5044 add_cxxflags -D__STDC_CONSTANT_MACROS
5045 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5046
5047 # some compilers silently accept -std=c11, so we also need to check that the
5048 # version macro is defined properly
5049 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5050     add_cflags -std=c11 ||
5051     check_cflags -std=c99
5052
5053 check_cppflags -D_FILE_OFFSET_BITS=64
5054 check_cppflags -D_LARGEFILE_SOURCE
5055
5056 add_host_cppflags -D_ISOC99_SOURCE
5057 check_host_cflags -std=c99
5058 check_host_cflags -Wall
5059 check_host_cflags $host_cflags_speed
5060
5061 check_64bit(){
5062     arch32=$1
5063     arch64=$2
5064     expr=${3:-'sizeof(void *) > 4'}
5065     test_code cc "" "int test[2*($expr) - 1]" &&
5066         subarch=$arch64 || subarch=$arch32
5067     enable $subarch
5068 }
5069
5070 case "$arch" in
5071     aarch64|alpha|ia64)
5072         enabled shared && enable_weak pic
5073     ;;
5074     mips)
5075         check_64bit mips mips64 '_MIPS_SIM > 1'
5076         enabled shared && enable_weak pic
5077     ;;
5078     parisc)
5079         check_64bit parisc parisc64
5080         enabled shared && enable_weak pic
5081     ;;
5082     ppc)
5083         check_64bit ppc ppc64
5084         enabled shared && enable_weak pic
5085     ;;
5086     s390)
5087         check_64bit s390 s390x
5088         enabled shared && enable_weak pic
5089     ;;
5090     sparc)
5091         check_64bit sparc sparc64
5092         enabled shared && enable_weak pic
5093     ;;
5094     x86)
5095         check_64bit x86_32 x86_64
5096         # Treat x32 as x64 for now. Note it also needs pic if shared
5097         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5098             subarch=x86_64 && enable x86_64 && disable x86_32
5099         if enabled x86_64; then
5100             enabled shared && enable_weak pic
5101             objformat=elf64
5102         fi
5103     ;;
5104 esac
5105
5106 # OS specific
5107 case $target_os in
5108     aix)
5109         SHFLAGS=-shared
5110         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5111         enabled shared && add_ldflags -Wl,-brtl
5112         arflags='-Xany -r -c'
5113         striptype=""
5114         ;;
5115     android)
5116         disable symver
5117         enable section_data_rel_ro
5118         add_cflags -fPIE
5119         add_ldexeflags -fPIE -pie
5120         SLIB_INSTALL_NAME='$(SLIBNAME)'
5121         SLIB_INSTALL_LINKS=
5122         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5123         ;;
5124     haiku)
5125         prefix_default="/boot/common"
5126         network_extralibs="-lnetwork"
5127         host_extralibs=
5128         ;;
5129     sunos)
5130         SHFLAGS='-shared -Wl,-h,$$(@F)'
5131         enabled x86 && append SHFLAGS -mimpure-text
5132         network_extralibs="-lsocket -lnsl"
5133         add_cppflags -D__EXTENSIONS__
5134         # When using suncc to build, the Solaris linker will mark
5135         # an executable with each instruction set encountered by
5136         # the Solaris assembler.  As our libraries contain their own
5137         # guards for processor-specific code, instead suppress
5138         # generation of the HWCAPS ELF section on Solaris x86 only.
5139         enabled_all suncc x86 &&
5140             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5141             add_ldflags -Wl,-M,mapfile
5142         nm_default='nm -P -g'
5143         version_script='-M'
5144         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5145         ;;
5146     netbsd)
5147         disable symver
5148         oss_indev_extralibs="-lossaudio"
5149         oss_outdev_extralibs="-lossaudio"
5150         enabled gcc || check_ldflags -Wl,-zmuldefs
5151         ;;
5152     openbsd|bitrig)
5153         disable symver
5154         striptype=""
5155         SHFLAGS='-shared'
5156         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5157         SLIB_INSTALL_LINKS=
5158         oss_indev_extralibs="-lossaudio"
5159         oss_outdev_extralibs="-lossaudio"
5160         ;;
5161     dragonfly)
5162         disable symver
5163         ;;
5164     freebsd)
5165         ;;
5166     bsd/os)
5167         add_extralibs -lpoll -lgnugetopt
5168         strip="strip -d"
5169         ;;
5170     darwin)
5171         enabled ppc && add_asflags -force_cpusubtype_ALL
5172         install_name_dir_default='$(SHLIBDIR)'
5173         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5174         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5175         strip="${strip} -x"
5176         add_ldflags -Wl,-dynamic,-search_paths_first
5177         check_cflags -Werror=partial-availability
5178         SLIBSUF=".dylib"
5179         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5180         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5181         enabled x86_64 && objformat="macho64" || objformat="macho32"
5182         enabled_any pic shared x86_64 ||
5183             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5184         check_headers dispatch/dispatch.h &&
5185             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5186         if test -n "$sysroot"; then
5187             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5188             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5189         fi
5190         version_script='-exported_symbols_list'
5191         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5192         ;;
5193     msys*)
5194         die "Native MSYS builds are discouraged, please use the MINGW environment."
5195         ;;
5196     mingw32*|mingw64*)
5197         target_os=mingw32
5198         LIBTARGET=i386
5199         if enabled x86_64; then
5200             LIBTARGET="i386:x86-64"
5201         elif enabled arm; then
5202             LIBTARGET="arm"
5203         elif enabled aarch64; then
5204             LIBTARGET="arm64"
5205         fi
5206         if enabled shared; then
5207             # Cannot build both shared and static libs when using dllimport.
5208             disable static
5209         fi
5210         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5211         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5212         shlibdir_default="$bindir_default"
5213         SLIBPREF=""
5214         SLIBSUF=".dll"
5215         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5216         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5217         if test_cmd lib.exe -list; then
5218             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5219             if enabled x86_64; then
5220                 LIBTARGET=x64
5221             fi
5222         else
5223             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5224         fi
5225         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5226         SLIB_INSTALL_LINKS=
5227         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5228         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5229         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5230         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5231         enabled x86_64 && objformat="win64" || objformat="win32"
5232         dlltool="${cross_prefix}dlltool"
5233         ranlib=:
5234         enable dos_paths
5235         check_ldflags -Wl,--nxcompat,--dynamicbase
5236         # Lets work around some stupidity in binutils.
5237         # ld will strip relocations from executables even though we need them
5238         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5239         # however ld then forgets what the entry point should be (oops) so we
5240         # have to manually (re)set it.
5241         if enabled x86_32; then
5242             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5243         elif enabled x86_64; then
5244             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5245             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5246             # Set image base >4GB for extra entropy with HEASLR
5247             add_ldexeflags -Wl,--image-base,0x140000000
5248             append SHFLAGS -Wl,--image-base,0x180000000
5249         fi
5250         ;;
5251     win32|win64)
5252         disable symver
5253         if enabled shared; then
5254             # Link to the import library instead of the normal static library
5255             # for shared libs.
5256             LD_LIB='%.lib'
5257             # Cannot build both shared and static libs with MSVC or icl.
5258             disable static
5259         fi
5260         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5261         shlibdir_default="$bindir_default"
5262         SLIBPREF=""
5263         SLIBSUF=".dll"
5264         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5265         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5266         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5267         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5268         SLIB_INSTALL_LINKS=
5269         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5270         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5271         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5272         enabled x86_64 && objformat="win64" || objformat="win32"
5273         ranlib=:
5274         enable dos_paths
5275         ;;
5276     cygwin*)
5277         target_os=cygwin
5278         shlibdir_default="$bindir_default"
5279         SLIBPREF="cyg"
5280         SLIBSUF=".dll"
5281         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5282         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5283         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5284         SLIB_INSTALL_LINKS=
5285         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5286         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5287         enabled x86_64 && objformat="win64" || objformat="win32"
5288         enable dos_paths
5289         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5290         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5291         ;;
5292     *-dos|freedos|opendos)
5293         network_extralibs="-lsocket"
5294         objformat="coff"
5295         enable dos_paths
5296         add_cppflags -U__STRICT_ANSI__
5297         ;;
5298     linux)
5299         enable section_data_rel_ro
5300         enabled_any arm aarch64 && enable_weak linux_perf
5301         ;;
5302     irix*)
5303         target_os=irix
5304         ranlib="echo ignoring ranlib"
5305         ;;
5306     os/2*)
5307         strip="lxlite -CS"
5308         striptype=""
5309         objformat="aout"
5310         add_cppflags -D_GNU_SOURCE
5311         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5312         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5313         LIBSUF="_s.a"
5314         SLIBPREF=""
5315         SLIBSUF=".dll"
5316         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5317         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5318         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5319             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5320             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5321             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5322             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5323         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5324             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5325         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5326         SLIB_INSTALL_LINKS=
5327         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5328         enable dos_paths
5329         enable_weak os2threads
5330         ;;
5331     gnu/kfreebsd)
5332         add_cppflags -D_BSD_SOURCE
5333         ;;
5334     gnu)
5335         ;;
5336     qnx)
5337         add_cppflags -D_QNX_SOURCE
5338         network_extralibs="-lsocket"
5339         ;;
5340     symbian)
5341         SLIBSUF=".dll"
5342         enable dos_paths
5343         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5344         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5345         add_ldflags -Wl,--target1-abs,--no-undefined \
5346                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5347                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5348         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5349                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5350                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5351         ;;
5352     minix)
5353         ;;
5354     none)
5355         ;;
5356     *)
5357         die "Unknown OS '$target_os'."
5358         ;;
5359 esac
5360
5361 # test if creating links works
5362 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5363 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5364 mkdir "$link_dest"
5365 $ln_s "$link_dest" "$link_name"
5366 touch "$link_dest/test_file"
5367 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5368     # create link to source path
5369     [ -e src ] && rm src
5370     $ln_s "$source_path" src
5371     source_link=src
5372 else
5373     # creating directory links doesn't work
5374     # fall back to using the full source path
5375     source_link="$source_path"
5376 fi
5377 # cleanup
5378 rm -r "$link_dest"
5379 rm -r "$link_name"
5380
5381 # determine libc flavour
5382
5383 probe_libc(){
5384     pfx=$1
5385     pfx_no_=${pfx%_}
5386     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5387     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5388         eval ${pfx}libc_type=uclibc
5389         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5390     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5391         eval ${pfx}libc_type=glibc
5392         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5393     # MinGW headers can be installed on Cygwin, so check for newlib first.
5394     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5395         eval ${pfx}libc_type=newlib
5396         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5397     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5398     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5399         eval ${pfx}libc_type=mingw64
5400         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5401             add_compat msvcrt/snprintf.o
5402             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5403         fi
5404         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5405         eval test \$${pfx_no_}cc_type = "gcc" &&
5406             add_${pfx}cppflags -D__printf__=__gnu_printf__
5407         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5408             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5409     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5410          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5411         eval ${pfx}libc_type=mingw32
5412         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5413             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5414             die "ERROR: MinGW32 runtime version must be >= 3.15."
5415         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5416         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5417             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5418         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5419             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5420         eval test \$${pfx_no_}cc_type = "gcc" &&
5421             add_${pfx}cppflags -D__printf__=__gnu_printf__
5422     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5423         eval ${pfx}libc_type=msvcrt
5424         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5425             if [ "$pfx" = host_ ]; then
5426                 add_host_cppflags -Dsnprintf=_snprintf
5427             else
5428                 add_compat strtod.o strtod=avpriv_strtod
5429                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5430                                              _snprintf=avpriv_snprintf  \
5431                                              vsnprintf=avpriv_vsnprintf
5432             fi
5433         fi
5434         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5435         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5436         # 0x601 by default unless something else is set by the user.
5437         # This can easily lead to us detecting functions only present
5438         # in such new versions and producing binaries requiring windows 7.0.
5439         # Therefore explicitly set the default to Vista unless the user has
5440         # set something else on the command line.
5441         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5442         # family. For these cases, configure is free to use any functions
5443         # found in the SDK headers by default. (Alternatively, we could force
5444         # _WIN32_WINNT to 0x0602 in that case.)
5445         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5446             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5447 #ifdef WINAPI_FAMILY
5448 #include <winapifamily.h>
5449 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5450 #error not desktop
5451 #endif
5452 #endif
5453 EOF
5454         if [ "$pfx" = "" ]; then
5455             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5456             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5457         fi
5458     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5459         eval ${pfx}libc_type=klibc
5460     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5461         eval ${pfx}libc_type=bionic
5462     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5463         eval ${pfx}libc_type=solaris
5464         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5465     fi
5466     test_${pfx}cc <<EOF
5467 #include <time.h>
5468 void *v = localtime_r;
5469 EOF
5470 test "$?" != 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
5471 #include <time.h>
5472 void *v = localtime_r;
5473 EOF
5474
5475     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5476 }
5477
5478 probe_libc
5479 probe_libc host_
5480
5481 # hacks for compiler/libc/os combinations
5482
5483 case $libc_type in
5484     bionic)
5485         add_compat strtod.o strtod=avpriv_strtod
5486         ;;
5487 esac
5488
5489 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5490     add_cppflags '-I\$(SRC_PATH)/compat/float'
5491
5492 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5493
5494 set_default libdir
5495 : ${shlibdir_default:="$libdir"}
5496 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5497
5498 set_default $PATHS_LIST
5499 set_default nm
5500
5501 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5502
5503 enable_weak_pic() {
5504     disabled pic && return
5505     enable pic
5506     add_cppflags -DPIC
5507     case "$target_os" in
5508     mingw*|cygwin*|win*)
5509         ;;
5510     *)
5511         add_cflags -fPIC
5512         add_asflags -fPIC
5513         ;;
5514     esac
5515 }
5516
5517 enabled pic && enable_weak_pic
5518
5519 test_cc <<EOF || die "Symbol mangling check failed."
5520 int ff_extern;
5521 EOF
5522 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5523 extern_prefix=${sym%%ff_extern*}
5524
5525 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5526
5527 for restrict_keyword in restrict __restrict__ __restrict ""; do
5528     test_code cc "" "char * $restrict_keyword p" && break
5529 done
5530
5531 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5532
5533 # The global variable ensures the bits appear unchanged in the object file.
5534 test_cc <<EOF || die "endian test failed"
5535 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5536 EOF
5537 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5538
5539 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5540
5541 if ! enabled ppc64 || enabled bigendian; then
5542     disable vsx
5543 fi
5544
5545 check_gas() {
5546     log "check_gas using '$as' as AS"
5547     # :vararg is used on aarch64, arm and ppc altivec
5548     check_as vararg "
5549 .macro m n, y:vararg=0
5550 \n: .int \y
5551 .endm
5552 m x" || return 1
5553     # .altmacro is only used in arm asm
5554     ! enabled arm || check_as gnu_as ".altmacro"
5555 }
5556
5557 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5558     nogas=:
5559     enabled_any arm aarch64 && nogas=die
5560     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5561     as_noop=-v
5562
5563     case $as_type in
5564         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5565         gcc)  gaspp_as_type=gas ;;
5566         *)    gaspp_as_type=$as_type ;;
5567     esac
5568
5569     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5570
5571     test "${as#*gas-preprocessor.pl}" != "$as" ||
5572     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5573         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5574
5575     if ! check_gas ; then
5576         as=${gas:=$as}
5577         check_gas || \
5578             $nogas "GNU assembler not found, install/update gas-preprocessor"
5579     fi
5580
5581     check_as as_func ".func test
5582                       .endfunc"
5583 fi
5584
5585 check_inline_asm inline_asm_labels '"1:\n"'
5586
5587 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5588
5589 if enabled aarch64; then
5590     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5591     # internal assembler in clang 3.3 does not support this instruction
5592     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5593     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5594
5595     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5596
5597 elif enabled alpha; then
5598
5599     check_cflags -mieee
5600
5601 elif enabled arm; then
5602
5603     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5604     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5605 float func(float a, float b){ return a+b; }
5606 EOF
5607     enabled thumb && check_cflags -mthumb || check_cflags -marm
5608
5609     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5610         :
5611     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5612         :
5613     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5614         case "${cross_prefix:-$cc}" in
5615             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5616             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5617 __asm__ (".eabi_attribute 28, 1");
5618 int main(void) { return 0; }
5619 EOF
5620         esac
5621         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5622     fi
5623
5624     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5625     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5626     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5627     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5628     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5629     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5630     enabled setend  && check_insn setend  'setend be'
5631
5632     [ $target_os = linux ] || [ $target_os = android ] ||
5633         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5634             $ARCH_EXT_LIST_ARM
5635
5636     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5637
5638     check_as as_arch_directive ".arch armv7-a"
5639     check_as as_dn_directive   "ra .dn d0.i16"
5640     check_as as_fpu_directive  ".fpu neon"
5641
5642     # llvm's integrated assembler supports .object_arch from llvm 3.5
5643     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5644         check_as as_object_arch ".object_arch armv4"
5645
5646     # MS armasm fails to assemble our PIC constructs
5647     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5648
5649 elif enabled mips; then
5650
5651     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5652     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5653     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5654
5655     # Enable minimum ISA based on selected options
5656     if enabled mips64; then
5657         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5658         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5659         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5660     else
5661         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5662         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5663         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5664         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5665     fi
5666
5667     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5668     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5669     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5670     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5671     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5672
5673     if enabled bigendian && enabled msa; then
5674         disable msa
5675     fi
5676
5677 elif enabled parisc; then
5678
5679     if enabled gcc; then
5680         case $($cc -dumpversion) in
5681             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5682         esac
5683     fi
5684
5685 elif enabled ppc; then
5686
5687     enable local_aligned
5688
5689     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5690     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5691     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5692     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5693
5694     if enabled altivec; then
5695         check_cflags -maltivec -mabi=altivec
5696
5697         # check if our compiler supports Motorola AltiVec C API
5698         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5699                                     vector signed int v2 = (vector signed int) { 1 };
5700                                     v1 = vec_add(v1, v2);"
5701
5702         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5703     fi
5704
5705     if enabled vsx; then
5706         check_cflags -mvsx &&
5707         check_cc vsx altivec.h "int v[4] = { 0 };
5708                                 vector signed int v1 = vec_vsx_ld(0, v);"
5709     fi
5710
5711     if enabled power8; then
5712         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5713     fi
5714
5715 elif enabled x86; then
5716
5717     check_builtin rdtsc    intrin.h   "__rdtsc()"
5718     check_builtin mm_empty mmintrin.h "_mm_empty()"
5719
5720     enable local_aligned
5721
5722     # check whether EBP is available on x86
5723     # As 'i' is stored on the stack, this program will crash
5724     # if the base pointer is used to access it because the
5725     # base pointer is cleared in the inline assembly code.
5726     check_exec_crash <<EOF && enable ebp_available
5727 volatile int i=0;
5728 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5729 return i;
5730 EOF
5731
5732     # check whether EBX is available on x86
5733     check_inline_asm ebx_available '""::"b"(0)' &&
5734         check_inline_asm ebx_available '"":::"%ebx"'
5735
5736     # check whether xmm clobbers are supported
5737     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5738
5739     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5740         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5741
5742     # check whether binutils is new enough to compile SSSE3/MMXEXT
5743     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5744     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5745
5746     probe_x86asm(){
5747         x86asmexe_probe=$1
5748         if test_cmd $x86asmexe_probe -v; then
5749             x86asmexe=$x86asmexe_probe
5750             x86asm_type=nasm
5751             x86asm_debug="-g -F dwarf"
5752             X86ASMDEP=
5753             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5754         elif test_cmd $x86asmexe_probe --version; then
5755             x86asmexe=$x86asmexe_probe
5756             x86asm_type=yasm
5757             x86asm_debug="-g dwarf2"
5758             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5759             X86ASM_DEPFLAGS=
5760         fi
5761         check_x86asm x86asm "movbe ecx, [5]"
5762     }
5763
5764     if ! disabled_any asm mmx x86asm; then
5765         disable x86asm
5766         for program in $x86asmexe nasm yasm; do
5767             probe_x86asm $program && break
5768         done
5769         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5770         X86ASMFLAGS="-f $objformat"
5771         enabled pic               && append X86ASMFLAGS "-DPIC"
5772         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5773         case "$objformat" in
5774             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5775         esac
5776
5777         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5778         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5779         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5780         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5781         check_x86asm cpunop          "CPU amdnop"
5782     fi
5783
5784     case "$cpu" in
5785         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5786             disable fast_clz
5787         ;;
5788     esac
5789
5790 fi
5791
5792 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5793
5794 check_ldflags -Wl,--as-needed
5795 check_ldflags -Wl,-z,noexecstack
5796
5797 if ! disabled network; then
5798     check_func getaddrinfo $network_extralibs
5799     check_func inet_aton $network_extralibs
5800
5801     check_type netdb.h "struct addrinfo"
5802     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5803     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5804     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5805     check_type poll.h "struct pollfd"
5806     check_type netinet/sctp.h "struct sctp_event_subscribe"
5807     check_struct "sys/socket.h" "struct msghdr" msg_flags
5808     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5809     check_type netinet/in.h "struct sockaddr_in6"
5810     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5811     check_type "sys/types.h sys/socket.h" socklen_t
5812
5813     # Prefer arpa/inet.h over winsock2
5814     if check_headers arpa/inet.h ; then
5815         check_func closesocket
5816     elif check_headers winsock2.h ; then
5817         check_func_headers winsock2.h closesocket -lws2 &&
5818             network_extralibs="-lws2" ||
5819         { check_func_headers winsock2.h closesocket -lws2_32 &&
5820             network_extralibs="-lws2_32"; } || disable winsock2_h network
5821         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5822
5823         check_type ws2tcpip.h socklen_t
5824         check_type ws2tcpip.h "struct addrinfo"
5825         check_type ws2tcpip.h "struct group_source_req"
5826         check_type ws2tcpip.h "struct ip_mreq_source"
5827         check_type ws2tcpip.h "struct ipv6_mreq"
5828         check_type winsock2.h "struct pollfd"
5829         check_struct winsock2.h "struct sockaddr" sa_len
5830         check_type ws2tcpip.h "struct sockaddr_in6"
5831         check_type ws2tcpip.h "struct sockaddr_storage"
5832     else
5833         disable network
5834     fi
5835 fi
5836
5837 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5838 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5839 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5840 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5841 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5842 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5843 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5844
5845 case "$custom_allocator" in
5846     jemalloc)
5847         # jemalloc by default does not use a prefix
5848         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5849     ;;
5850     tcmalloc)
5851         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5852         malloc_prefix=tc_
5853     ;;
5854 esac
5855
5856 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5857 check_func  ${malloc_prefix}memalign            && enable memalign
5858 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5859
5860 check_func  access
5861 check_func_headers stdlib.h arc4random
5862 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5863 check_func  fcntl
5864 check_func  fork
5865 check_func  gethrtime
5866 check_func  getopt
5867 check_func  getrusage
5868 check_func  gettimeofday
5869 check_func  isatty
5870 check_func  mkstemp
5871 check_func  mmap
5872 check_func  mprotect
5873 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5874 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5875 check_func  sched_getaffinity
5876 check_func  setrlimit
5877 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5878 check_func  strerror_r
5879 check_func  sysconf
5880 check_func  sysctl
5881 check_func  usleep
5882
5883 check_func_headers conio.h kbhit
5884 check_func_headers io.h setmode
5885 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5886 check_func_headers mach/mach_time.h mach_absolute_time
5887 check_func_headers stdlib.h getenv
5888 check_func_headers sys/stat.h lstat
5889
5890 check_func_headers windows.h GetProcessAffinityMask
5891 check_func_headers windows.h GetProcessTimes
5892 check_func_headers windows.h GetSystemTimeAsFileTime
5893 check_func_headers windows.h LoadLibrary
5894 check_func_headers windows.h MapViewOfFile
5895 check_func_headers windows.h PeekNamedPipe
5896 check_func_headers windows.h SetConsoleTextAttribute
5897 check_func_headers windows.h SetConsoleCtrlHandler
5898 check_func_headers windows.h Sleep
5899 check_func_headers windows.h VirtualAlloc
5900 check_func_headers glob.h glob
5901 enabled xlib &&
5902     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5903
5904 check_headers direct.h
5905 check_headers dirent.h
5906 check_headers dxgidebug.h
5907 check_headers dxva.h
5908 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5909 check_headers io.h
5910 check_headers linux/perf_event.h
5911 check_headers libcrystalhd/libcrystalhd_if.h
5912 check_headers malloc.h
5913 check_headers net/udplite.h
5914 check_headers poll.h
5915 check_headers sys/param.h
5916 check_headers sys/resource.h
5917 check_headers sys/select.h
5918 check_headers sys/time.h
5919 check_headers sys/un.h
5920 check_headers termios.h
5921 check_headers unistd.h
5922 check_headers valgrind/valgrind.h
5923 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5924 check_headers windows.h
5925 check_headers X11/extensions/XvMClib.h
5926 check_headers asm/types.h
5927
5928 # it seems there are versions of clang in some distros that try to use the
5929 # gcc headers, which explodes for stdatomic
5930 # so we also check that atomics actually work here
5931 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5932
5933 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5934 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5935     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5936 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5937 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5938 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5939
5940 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5941 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5942 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5943
5944 enabled appkit       && check_apple_framework AppKit
5945 enabled audiotoolbox && check_apple_framework AudioToolbox
5946 enabled avfoundation && check_apple_framework AVFoundation
5947 enabled coreimage    && check_apple_framework CoreImage
5948 enabled videotoolbox && check_apple_framework VideoToolbox
5949
5950 check_apple_framework CoreFoundation
5951 check_apple_framework CoreMedia
5952 check_apple_framework CoreVideo
5953
5954 enabled avfoundation && {
5955     disable coregraphics applicationservices
5956     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5957     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5958
5959 enabled videotoolbox && {
5960     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5961     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5962 }
5963
5964 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5965
5966 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5967 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5968 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5969 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5970 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5971
5972 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5973 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5974 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5975 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5976 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5977 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5978
5979 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5980
5981 if ! disabled ffnvcodec; then
5982     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5983           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5984       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5985           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5986 fi
5987
5988 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5989
5990 if ! disabled w32threads && ! enabled pthreads; then
5991     check_func_headers "windows.h process.h" _beginthreadex &&
5992         check_type "windows.h" CONDITION_VARIABLE &&
5993         check_type "windows.h" INIT_ONCE &&
5994         enable w32threads || disable w32threads
5995     if ! enabled w32threads && enabled winrt; then
5996         check_func_headers "windows.h" CreateThread &&
5997             enable w32threads || disable w32threads
5998     fi
5999 fi
6000
6001 # check for some common methods of building with pthread support
6002 # do this before the optional library checks as some of them require pthreads
6003 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6004     if check_lib pthreads pthread.h pthread_join   -pthread &&
6005        check_lib pthreads pthread.h pthread_create -pthread; then
6006         add_cflags -pthread
6007     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6008          check_lib pthreads pthread.h pthread_create -pthreads; then
6009         add_cflags -pthreads
6010     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6011          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6012         add_cflags -ldl -pthread
6013     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6014          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6015         :
6016     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6017          check_lib pthreads pthread.h pthread_create -lpthread; then
6018         :
6019     elif check_func pthread_join && check_func pthread_create; then
6020         enable pthreads
6021     fi
6022     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6023
6024     if enabled pthreads; then
6025         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6026         check_func pthread_cancel $pthreads_extralibs
6027     fi
6028 fi
6029
6030 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6031                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6032 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6033 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6034
6035 # On some systems dynamic loading requires no extra linker flags
6036 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6037
6038 check_lib libm math.h sin -lm
6039
6040 atan2f_args=2
6041 copysign_args=2
6042 hypot_args=2
6043 ldexpf_args=2
6044 powf_args=2
6045
6046 for func in $MATH_FUNCS; do
6047     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6048 done
6049
6050 for func in $COMPLEX_FUNCS; do
6051     eval check_complexfunc $func \${${func}_args:-1}
6052 done
6053
6054 # these are off by default, so fail if requested and not available
6055 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6056 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6057 enabled decklink          && { require_headers DeckLinkAPI.h &&
6058                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6059 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6060 enabled frei0r            && require_headers frei0r.h
6061 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6062 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6063 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6064 enabled ladspa            && require_headers ladspa.h
6065 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6066 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6067 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6068 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6069 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6070 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6071 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6072                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6073                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6074 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6075 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6076 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.0.1" "dav1d/dav1d.h" dav1d_version
6077 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6078 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6079 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6080 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6081                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6082                                  warn "using libfdk without pkg-config"; } }
6083 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"
6084 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6085 enabled fontconfig        && enable libfontconfig
6086 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6087 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6088 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6089 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6090                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6091 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6092                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6093                                done || die "ERROR: libgsm not found"; }
6094 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6095 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6096 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6097 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6098 # While it may appear that require is being used as a pkg-config
6099 # fallback for libmfx, it is actually being used to detect a different
6100 # installation route altogether.  If libmfx is installed via the Intel
6101 # Media SDK or Intel Media Server Studio, these don't come with
6102 # pkg-config support.  Instead, users should make sure that the build
6103 # can find the libraries and headers through other means.
6104 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6105                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6106 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6107 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6108 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6109                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6110 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6111                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6112                                die "ERROR: libnpp not found"; }
6113 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6114 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6115 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6116                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6117                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6118                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6119 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6120 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6121                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6122 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6123 enabled libopus           && {
6124     enabled libopus_decoder && {
6125         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6126     }
6127     enabled libopus_encoder && {
6128         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6129     }
6130 }
6131 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6132 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6133 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6134 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6135 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6136 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6137                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6138 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6139 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6140 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6141 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6142 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6143 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6144 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6145 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6146 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6147 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6148                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6149                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6150 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6151 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6152 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6153 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6154 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6155                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6156
6157 enabled libvpx            && {
6158     enabled libvpx_vp8_decoder && {
6159         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6160             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6161                 die "ERROR: libvpx decoder version must be >=1.4.0";
6162     }
6163     enabled libvpx_vp8_encoder && {
6164         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6165             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6166                 die "ERROR: libvpx encoder version must be >=1.4.0";
6167     }
6168     enabled libvpx_vp9_decoder && {
6169         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6170             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6171     }
6172     enabled libvpx_vp9_encoder && {
6173         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6174             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6175     }
6176     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6177         die "libvpx enabled but no supported decoders found"
6178     fi
6179 }
6180
6181 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6182 enabled libwebp           && {
6183     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6184     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6185 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6186                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6187                                  warn "using libx264 without pkg-config"; } } &&
6188                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6189                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6190 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6191                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6192 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6193 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.2.77" "stdint.h xavs2.h" xavs2_api_get
6194 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6195 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6196 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6197 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6198                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6199                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6200 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6201 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6202                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6203                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6204                                die "ERROR: mbedTLS not found"; }
6205 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6206 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6207                                { ! enabled cross_compile &&
6208                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6209                                  add_ldflags -L/opt/vc/lib/ &&
6210                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6211                                die "ERROR: mmal not found" &&
6212                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6213 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6214                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6215                                die "ERROR: openal not found"; } &&
6216                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6217                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6218 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6219                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6220                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6221                                die "ERROR: opencl not found"; } &&
6222                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6223                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6224                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6225 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6226                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6227                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6228                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6229                                die "ERROR: opengl not found."
6230                              }
6231 enabled omx               && require_headers OMX_Core.h
6232 enabled omx_rpi           && { check_headers OMX_Core.h ||
6233                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6234                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6235 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6236                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6237                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6238                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6239                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6240                                die "ERROR: openssl not found"; }
6241 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6242                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6243                                { enabled libdrm ||
6244                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6245                              }
6246 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6247
6248
6249 if enabled gcrypt; then
6250     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6251     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6252         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6253         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6254         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6255             die "ERROR: gcrypt not found"
6256         add_cflags $gcrypt_cflags
6257     else
6258         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6259     fi
6260 fi
6261
6262 if enabled sdl2; then
6263     SDL2_CONFIG="${cross_prefix}sdl2-config"
6264     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6265     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6266         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6267         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6268         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6269         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6270         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6271             enable sdl2
6272     fi
6273     if test $target_os = "mingw32"; then
6274         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6275     fi
6276 fi
6277
6278 if enabled decklink; then
6279     case $target_os in
6280         mingw32*|mingw64*|win32|win64)
6281             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6282             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6283             ;;
6284     esac
6285 fi
6286
6287 enabled securetransport &&
6288     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6289     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6290         disable securetransport
6291
6292 enabled securetransport &&
6293     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6294
6295 enabled schannel &&
6296     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6297     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6298     schannel_extralibs="-lsecur32" ||
6299         disable schannel
6300
6301 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6302 enabled makeinfo \
6303     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6304     && enable makeinfo_html || disable makeinfo_html
6305 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6306 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6307 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6308 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6309
6310 # check V4L2 codecs available in the API
6311 check_headers linux/fb.h
6312 check_headers linux/videodev2.h
6313 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6314 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6315 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6316 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6317 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6318 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6319 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6320 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6321 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6322 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6323 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6324
6325 check_headers sys/videoio.h
6326 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6327
6328 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6329 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6330 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6331 # w32api 3.12 had it defined wrong
6332 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6333
6334 check_type "dshow.h" IBaseFilter
6335
6336 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6337 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6338     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6339     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6340     check_headers "dev/ic/bt8xx.h"
6341
6342 if check_struct sys/soundcard.h audio_buf_info bytes; then
6343     enable_sanitized sys/soundcard.h
6344 else
6345     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6346     #include <sys/soundcard.h>
6347     audio_buf_info abc;
6348 EOF
6349 fi
6350
6351 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6352     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6353
6354 enabled libjack &&
6355     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6356
6357 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6358
6359 if enabled libcdio; then
6360     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6361     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6362     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6363     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6364     die "ERROR: No usable libcdio/cdparanoia found"
6365 fi
6366
6367 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6368     disable libxcb_shm libxcb_shape libxcb_xfixes
6369
6370 if enabled libxcb; then
6371     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6372     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6373     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6374 fi
6375
6376 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6377
6378 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6379 # the desktop api partition
6380 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6381 #ifdef WINAPI_FAMILY
6382 #include <winapifamily.h>
6383 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6384 #error desktop, not uwp
6385 #else
6386 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6387 #endif
6388 #else
6389 #error no family set
6390 #endif
6391 EOF
6392
6393 enabled vaapi &&
6394     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6395
6396 if enabled vaapi; then
6397     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6398
6399     if enabled xlib; then
6400         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6401     fi
6402
6403     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6404 fi
6405
6406 if enabled_all opencl libdrm ; then
6407     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6408         enable opencl_drm_beignet
6409     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6410         enable opencl_drm_arm
6411 fi
6412
6413 if enabled_all opencl vaapi ; then
6414     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6415     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6416         enable opencl_vaapi_intel_media
6417 fi
6418
6419 if enabled_all opencl dxva2 ; then
6420     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6421         enable opencl_dxva2
6422 fi
6423
6424 if enabled_all opencl d3d11va ; then
6425     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6426         enable opencl_d3d11
6427 fi
6428
6429 enabled vdpau &&
6430     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6431
6432 enabled vdpau &&
6433     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6434
6435 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6436
6437 if enabled x86; then
6438     case $target_os in
6439         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6440             ;;
6441         *)
6442             disable ffnvcodec cuvid nvdec nvenc
6443             ;;
6444     esac
6445 else
6446     disable ffnvcodec cuvid nvdec nvenc
6447 fi
6448
6449 enabled ffnvcodec && enable cuda
6450
6451 enabled nvenc &&
6452     test_cc -I$source_path <<EOF || disable nvenc
6453 #include <ffnvcodec/nvEncodeAPI.h>
6454 NV_ENCODE_API_FUNCTION_LIST flist;
6455 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6456 int main(void) { return 0; }
6457 EOF
6458
6459 enabled amf &&
6460     check_cpp_condition amf "AMF/core/Version.h" \
6461         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6462
6463 # Funny iconv installations are not unusual, so check it after all flags have been set
6464 if enabled libc_iconv; then
6465     check_func_headers iconv.h iconv
6466 elif enabled iconv; then
6467     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6468 fi
6469
6470 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6471
6472 # add some useful compiler flags if supported
6473 check_cflags -Wdeclaration-after-statement
6474 check_cflags -Wall
6475 check_cflags -Wdisabled-optimization
6476 check_cflags -Wpointer-arith
6477 check_cflags -Wredundant-decls
6478 check_cflags -Wwrite-strings
6479 check_cflags -Wtype-limits
6480 check_cflags -Wundef
6481 check_cflags -Wmissing-prototypes
6482 check_cflags -Wno-pointer-to-int-cast
6483 check_cflags -Wstrict-prototypes
6484 check_cflags -Wempty-body
6485
6486 if enabled extra_warnings; then
6487     check_cflags -Wcast-qual
6488     check_cflags -Wextra
6489     check_cflags -Wpedantic
6490 fi
6491
6492 check_disable_warning(){
6493     warning_flag=-W${1#-Wno-}
6494     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6495 }
6496
6497 test_cflags -Werror=unused-command-line-argument &&
6498     append unknown_warning_flags "-Werror=unused-command-line-argument"
6499 test_cflags -Werror=unknown-warning-option &&
6500     append unknown_warning_flags "-Werror=unknown-warning-option"
6501
6502 check_disable_warning -Wno-parentheses
6503 check_disable_warning -Wno-switch
6504 check_disable_warning -Wno-format-zero-length
6505 check_disable_warning -Wno-pointer-sign
6506 check_disable_warning -Wno-unused-const-variable
6507 check_disable_warning -Wno-bool-operation
6508
6509 check_disable_warning_headers(){
6510     warning_flag=-W${1#-Wno-}
6511     test_cflags $warning_flag && add_cflags_headers $1
6512 }
6513
6514 check_disable_warning_headers -Wno-deprecated-declarations
6515 check_disable_warning_headers -Wno-unused-variable
6516
6517 test_cc <<EOF && enable blocks_extension
6518 void (^block)(void);
6519 EOF
6520
6521 # add some linker flags
6522 check_ldflags -Wl,--warn-common
6523 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6524 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6525 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6526
6527 # add some strip flags
6528 check_stripflags -x
6529
6530 enabled neon_clobber_test &&
6531     check_ldflags -Wl,--wrap,avcodec_open2              \
6532                   -Wl,--wrap,avcodec_decode_audio4      \
6533                   -Wl,--wrap,avcodec_decode_video2      \
6534                   -Wl,--wrap,avcodec_decode_subtitle2   \
6535                   -Wl,--wrap,avcodec_encode_audio2      \
6536                   -Wl,--wrap,avcodec_encode_video2      \
6537                   -Wl,--wrap,avcodec_encode_subtitle    \
6538                   -Wl,--wrap,avcodec_send_packet        \
6539                   -Wl,--wrap,avcodec_receive_packet     \
6540                   -Wl,--wrap,avcodec_send_frame         \
6541                   -Wl,--wrap,avcodec_receive_frame      \
6542                   -Wl,--wrap,swr_convert                \
6543                   -Wl,--wrap,avresample_convert ||
6544     disable neon_clobber_test
6545
6546 enabled xmm_clobber_test &&
6547     check_ldflags -Wl,--wrap,avcodec_open2              \
6548                   -Wl,--wrap,avcodec_decode_audio4      \
6549                   -Wl,--wrap,avcodec_decode_video2      \
6550                   -Wl,--wrap,avcodec_decode_subtitle2   \
6551                   -Wl,--wrap,avcodec_encode_audio2      \
6552                   -Wl,--wrap,avcodec_encode_video2      \
6553                   -Wl,--wrap,avcodec_encode_subtitle    \
6554                   -Wl,--wrap,avcodec_send_packet        \
6555                   -Wl,--wrap,avcodec_receive_packet     \
6556                   -Wl,--wrap,avcodec_send_frame         \
6557                   -Wl,--wrap,avcodec_receive_frame      \
6558                   -Wl,--wrap,swr_convert                \
6559                   -Wl,--wrap,avresample_convert         \
6560                   -Wl,--wrap,sws_scale ||
6561     disable xmm_clobber_test
6562
6563 check_ld "cc" proper_dce <<EOF
6564 extern const int array[512];
6565 static inline int func(void) { return array[0]; }
6566 int main(void) { return 0; }
6567 EOF
6568
6569 if enabled proper_dce; then
6570     echo "X { local: *; };" > $TMPV
6571     if test_ldflags -Wl,${version_script},$TMPV; then
6572         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6573         quotes='""'
6574         test_cc <<EOF && enable symver_asm_label
6575 void ff_foo(void) __asm__ ("av_foo@VERSION");
6576 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6577 EOF
6578         test_cc <<EOF && enable symver_gnu_asm
6579 __asm__(".symver ff_foo,av_foo@VERSION");
6580 void ff_foo(void) {}
6581 EOF
6582     fi
6583 fi
6584
6585 if [ -z "$optflags" ]; then
6586     if enabled small; then
6587         optflags=$cflags_size
6588     elif enabled optimizations; then
6589         optflags=$cflags_speed
6590     else
6591         optflags=$cflags_noopt
6592     fi
6593 fi
6594
6595 if [ -z "$nvccflags" ]; then
6596     nvccflags=$nvccflags_default
6597 fi
6598
6599 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6600     nvccflags="$nvccflags -m64"
6601 else
6602     nvccflags="$nvccflags -m32"
6603 fi
6604
6605 check_optflags(){
6606     check_cflags "$@"
6607     enabled lto && check_ldflags "$@"
6608 }
6609
6610 check_optflags $optflags
6611 check_optflags -fno-math-errno
6612 check_optflags -fno-signed-zeros
6613
6614 if enabled lto; then
6615     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6616     check_cflags  -flto
6617     check_ldflags -flto $cpuflags
6618     disable inline_asm_direct_symbol_refs
6619 fi
6620
6621 enabled ftrapv && check_cflags -ftrapv
6622
6623 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6624 int x;
6625 EOF
6626
6627
6628 if enabled icc; then
6629     # Just warnings, no remarks
6630     check_cflags -w1
6631     # -wd: Disable following warnings
6632     # 144, 167, 556: -Wno-pointer-sign
6633     # 188: enumerated type mixed with another type
6634     # 1292: attribute "foo" ignored
6635     # 1419: external declaration in primary source file
6636     # 10006: ignoring unknown option -fno-signed-zeros
6637     # 10148: ignoring unknown option -Wno-parentheses
6638     # 10156: ignoring option '-W'; no argument required
6639     # 13200: No EMMS instruction before call to function
6640     # 13203: No EMMS instruction before return from function
6641     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6642     # 11030: Warning unknown option --as-needed
6643     # 10156: ignoring option '-export'; no argument required
6644     check_ldflags -wd10156,11030
6645     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6646     enable ebp_available
6647     # The test above does not test linking
6648     enabled lto && disable symver_asm_label
6649     if enabled x86_32; then
6650         icc_version=$($cc -dumpversion)
6651         test ${icc_version%%.*} -ge 11 &&
6652             check_cflags -falign-stack=maintain-16-byte ||
6653             disable aligned_stack
6654     fi
6655 elif enabled gcc; then
6656     check_optflags -fno-tree-vectorize
6657     check_cflags -Werror=format-security
6658     check_cflags -Werror=implicit-function-declaration
6659     check_cflags -Werror=missing-prototypes
6660     check_cflags -Werror=return-type
6661     check_cflags -Werror=vla
6662     check_cflags -Wformat
6663     check_cflags -fdiagnostics-color=auto
6664     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6665     if enabled x86_32; then
6666         case $target_os in
6667         *bsd*)
6668             # BSDs don't guarantee a 16 byte aligned stack, but we can
6669             # request GCC to try to maintain 16 byte alignment throughout
6670             # function calls. Library entry points that might call assembly
6671             # functions align the stack. (The parameter means 2^4 bytes.)
6672             check_cflags -mpreferred-stack-boundary=4
6673             ;;
6674         esac
6675     fi
6676 elif enabled llvm_gcc; then
6677     check_cflags -mllvm -stack-alignment=16
6678 elif enabled clang; then
6679     if enabled x86_32; then
6680         # Clang doesn't support maintaining alignment without assuming the
6681         # same alignment in every function. If 16 byte alignment would be
6682         # enabled, one would also have to either add attribute_align_arg on
6683         # every single entry point into the libraries or enable -mstackrealign
6684         # (doing stack realignment in every single function).
6685         case $target_os in
6686         mingw32|win32|*bsd*)
6687             disable aligned_stack
6688             ;;
6689         *)
6690             check_cflags -mllvm -stack-alignment=16
6691             check_cflags -mstack-alignment=16
6692             ;;
6693         esac
6694     else
6695         check_cflags -mllvm -stack-alignment=16
6696         check_cflags -mstack-alignment=16
6697     fi
6698     check_cflags -Qunused-arguments
6699     check_cflags -Werror=implicit-function-declaration
6700     check_cflags -Werror=missing-prototypes
6701     check_cflags -Werror=return-type
6702 elif enabled cparser; then
6703     add_cflags -Wno-missing-variable-declarations
6704     add_cflags -Wno-empty-statement
6705 elif enabled armcc; then
6706     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6707     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6708     # 2523: use of inline assembly is deprecated
6709     add_cflags -W${armcc_opt},--diag_suppress=2523
6710     add_cflags -W${armcc_opt},--diag_suppress=1207
6711     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6712     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6713     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6714     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6715 elif enabled pathscale; then
6716     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6717     disable inline_asm
6718 elif enabled_any msvc icl; then
6719     enabled x86_32 && disable aligned_stack
6720     enabled_all x86_32 debug && add_cflags -Oy-
6721     enabled debug && add_ldflags -debug
6722     enable pragma_deprecated
6723     if enabled icl; then
6724         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6725         # (correctly) on icl 13.x.
6726         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6727             add_cflags -Qansi-alias
6728         # Some inline asm is not compilable in debug
6729         if enabled debug; then
6730             disable ebp_available
6731             disable ebx_available
6732         fi
6733     fi
6734     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6735     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6736     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6737     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6738     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6739     # MSVC 2013 and newer can handle it fine.
6740     # If this declspec fails, force including stdlib.h before the restrict redefinition
6741     # happens in config.h.
6742     if [ $restrict_keyword != restrict ]; then
6743         test_cc <<EOF || add_cflags -FIstdlib.h
6744 __declspec($restrict_keyword) void *foo(int);
6745 EOF
6746     fi
6747     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6748     # Issue has been fixed in MSVC v19.00.24218.
6749     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6750         check_cflags -d2SSAOptimizer-
6751     # enable utf-8 source processing on VS2015 U2 and newer
6752     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6753         add_cflags -utf-8
6754 fi
6755
6756 for pfx in "" host_; do
6757     varname=${pfx%_}cc_type
6758     eval "type=\$$varname"
6759     if [ "$type" = "msvc" ]; then
6760         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6761 static inline int foo(int a) { return a; }
6762 EOF
6763     fi
6764 done
6765
6766 case $as_type in
6767     clang)
6768         add_asflags -Qunused-arguments
6769     ;;
6770 esac
6771
6772 case $ld_type in
6773     clang)
6774         check_ldflags -Qunused-arguments
6775     ;;
6776 esac
6777
6778 enable frame_thread_encoder
6779
6780 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6781
6782 check_deps $CONFIG_LIST       \
6783            $CONFIG_EXTRA      \
6784            $HAVE_LIST         \
6785            $ALL_COMPONENTS    \
6786
6787 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"
6788 enabled avresample && warn "Building with deprecated library libavresample"
6789
6790 if test $target_os = "haiku"; then
6791     disable memalign
6792     disable posix_memalign
6793 fi
6794
6795 flatten_extralibs(){
6796     nested_entries=
6797     list_name=$1
6798     eval list=\$${1}
6799     for entry in $list; do
6800         entry_copy=$entry
6801         resolve entry_copy
6802         flat_entries=
6803         for e in $entry_copy; do
6804             case $e in
6805                 *_extralibs) nested_entries="$nested_entries$e ";;
6806                           *) flat_entries="$flat_entries$e ";;
6807             esac
6808         done
6809         eval $entry="\$flat_entries"
6810     done
6811     append $list_name "$nested_entries"
6812
6813     resolve nested_entries
6814     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6815         flatten_extralibs $list_name
6816     fi
6817 }
6818
6819 flatten_extralibs_wrapper(){
6820     list_name=$1
6821     flatten_extralibs $list_name
6822     unique $list_name
6823     resolve $list_name
6824     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6825     eval printf \''%s'\' \""\$$list_name"\"
6826 }
6827
6828 for linkunit in $LIBRARY_LIST; do
6829     unset current_extralibs
6830     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6831     for comp in ${components}; do
6832         enabled $comp || continue
6833         comp_extralibs="${comp}_extralibs"
6834         append current_extralibs $comp_extralibs
6835     done
6836     eval prepend ${linkunit}_extralibs $current_extralibs
6837 done
6838
6839 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6840     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6841 done
6842
6843 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6844
6845 for thread in $THREADS_LIST; do
6846     if enabled $thread; then
6847         test -n "$thread_type" &&
6848             die "ERROR: Only one thread type must be selected." ||
6849             thread_type="$thread"
6850     fi
6851 done
6852
6853 if disabled stdatomic; then
6854     if enabled atomics_gcc; then
6855         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6856     elif enabled atomics_win32; then
6857         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6858     elif enabled atomics_suncc; then
6859         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6860     elif enabled pthreads; then
6861         add_compat atomics/pthread/stdatomic.o
6862         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6863     else
6864         enabled threads && die "Threading is enabled, but no atomics are available"
6865         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6866     fi
6867 fi
6868
6869 # Check if requested libraries were found.
6870 for lib in $AUTODETECT_LIBS; do
6871     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6872 done
6873
6874 enabled zlib && add_cppflags -DZLIB_CONST
6875
6876 # conditional library dependencies, in any order
6877 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6878 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6879 enabled afir_filter         && prepend avfilter_deps "avcodec"
6880 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6881 enabled aresample_filter    && prepend avfilter_deps "swresample"
6882 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6883 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6884 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6885 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6886 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6887 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6888 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6889 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6890 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6891 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6892 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6893 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6894 enabled pan_filter          && prepend avfilter_deps "swresample"
6895 enabled pp_filter           && prepend avfilter_deps "postproc"
6896 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6897 enabled resample_filter && prepend avfilter_deps "avresample"
6898 enabled sab_filter          && prepend avfilter_deps "swscale"
6899 enabled scale_filter    && prepend avfilter_deps "swscale"
6900 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6901 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6902 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6903 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6904 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6905 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6906 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6907 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6908 enabled spp_filter          && prepend avfilter_deps "avcodec"
6909 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6910 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6911 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6912 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6913
6914 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6915
6916 #FIXME
6917 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6918     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6919
6920 enabled opus_decoder    && prepend avcodec_deps "swresample"
6921
6922 # reorder the items at var $1 to align with the items order at var $2 .
6923 # die if an item at $1 is not at $2 .
6924 reorder_by(){
6925     eval rb_in=\$$1
6926     eval rb_ordered=\$$2
6927
6928     for rb in $rb_in; do
6929         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6930     done
6931
6932     rb_out=
6933     for rb in $rb_ordered; do
6934         is_in $rb $rb_in && rb_out="$rb_out$rb "
6935     done
6936     eval $1=\$rb_out
6937 }
6938
6939 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6940 # within a set of N items, N expansions are enough to expose a cycle.
6941 expand_deps(){
6942     unique ${1}_deps  # required for the early break test.
6943     for dummy in $LIBRARY_LIST; do  # N iteratios
6944         eval deps=\$${1}_deps
6945         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6946         unique ${1}_deps
6947         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6948     done
6949
6950     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6951     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6952 }
6953
6954 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6955 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6956
6957 map 'expand_deps $v' $LIBRARY_LIST
6958
6959 if test "$quiet" != "yes"; then
6960
6961 echo "install prefix            $prefix"
6962 echo "source path               $source_path"
6963 echo "C compiler                $cc"
6964 echo "C library                 $libc_type"
6965 if test "$host_cc" != "$cc"; then
6966     echo "host C compiler           $host_cc"
6967     echo "host C library            $host_libc_type"
6968 fi
6969 echo "ARCH                      $arch ($cpu)"
6970 if test "$build_suffix" != ""; then
6971     echo "build suffix              $build_suffix"
6972 fi
6973 if test "$progs_suffix" != ""; then
6974     echo "progs suffix              $progs_suffix"
6975 fi
6976 if test "$extra_version" != ""; then
6977     echo "version string suffix     $extra_version"
6978 fi
6979 echo "big-endian                ${bigendian-no}"
6980 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6981 if enabled x86; then
6982     echo "standalone assembly       ${x86asm-no}"
6983     echo "x86 assembler             ${x86asmexe}"
6984     echo "MMX enabled               ${mmx-no}"
6985     echo "MMXEXT enabled            ${mmxext-no}"
6986     echo "3DNow! enabled            ${amd3dnow-no}"
6987     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6988     echo "SSE enabled               ${sse-no}"
6989     echo "SSSE3 enabled             ${ssse3-no}"
6990     echo "AESNI enabled             ${aesni-no}"
6991     echo "AVX enabled               ${avx-no}"
6992     echo "AVX2 enabled              ${avx2-no}"
6993     echo "AVX-512 enabled           ${avx512-no}"
6994     echo "XOP enabled               ${xop-no}"
6995     echo "FMA3 enabled              ${fma3-no}"
6996     echo "FMA4 enabled              ${fma4-no}"
6997     echo "i686 features enabled     ${i686-no}"
6998     echo "CMOV is fast              ${fast_cmov-no}"
6999     echo "EBX available             ${ebx_available-no}"
7000     echo "EBP available             ${ebp_available-no}"
7001 fi
7002 if enabled aarch64; then
7003     echo "NEON enabled              ${neon-no}"
7004     echo "VFP enabled               ${vfp-no}"
7005 fi
7006 if enabled arm; then
7007     echo "ARMv5TE enabled           ${armv5te-no}"
7008     echo "ARMv6 enabled             ${armv6-no}"
7009     echo "ARMv6T2 enabled           ${armv6t2-no}"
7010     echo "VFP enabled               ${vfp-no}"
7011     echo "NEON enabled              ${neon-no}"
7012     echo "THUMB enabled             ${thumb-no}"
7013 fi
7014 if enabled mips; then
7015     echo "MIPS FPU enabled          ${mipsfpu-no}"
7016     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7017     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7018     echo "MIPS MSA enabled          ${msa-no}"
7019     echo "LOONGSON MMI enabled      ${mmi-no}"
7020 fi
7021 if enabled ppc; then
7022     echo "AltiVec enabled           ${altivec-no}"
7023     echo "VSX enabled               ${vsx-no}"
7024     echo "POWER8 enabled            ${power8-no}"
7025     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7026     echo "dcbzl available           ${dcbzl-no}"
7027 fi
7028 echo "debug symbols             ${debug-no}"
7029 echo "strip symbols             ${stripping-no}"
7030 echo "optimize for size         ${small-no}"
7031 echo "optimizations             ${optimizations-no}"
7032 echo "static                    ${static-no}"
7033 echo "shared                    ${shared-no}"
7034 echo "postprocessing support    ${postproc-no}"
7035 echo "network support           ${network-no}"
7036 echo "threading support         ${thread_type-no}"
7037 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7038 echo "texi2html enabled         ${texi2html-no}"
7039 echo "perl enabled              ${perl-no}"
7040 echo "pod2man enabled           ${pod2man-no}"
7041 echo "makeinfo enabled          ${makeinfo-no}"
7042 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7043 test -n "$random_seed" &&
7044     echo "random seed               ${random_seed}"
7045 echo
7046
7047 echo "External libraries:"
7048 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7049 echo
7050
7051 echo "External libraries providing hardware acceleration:"
7052 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7053 echo
7054
7055 echo "Libraries:"
7056 print_enabled '' $LIBRARY_LIST | print_in_columns
7057 echo
7058
7059 echo "Programs:"
7060 print_enabled '' $PROGRAM_LIST | print_in_columns
7061 echo
7062
7063 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7064     echo "Enabled ${type}s:"
7065     eval list=\$$(toupper $type)_LIST
7066     print_enabled '_*' $list | print_in_columns
7067     echo
7068 done
7069
7070 if test -n "$ignore_tests"; then
7071     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7072     echo "Ignored FATE tests:"
7073     echo $ignore_tests | print_in_columns
7074     echo
7075 fi
7076
7077 echo "License: $license"
7078
7079 fi # test "$quiet" != "yes"
7080
7081 if test -n "$WARNINGS"; then
7082     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7083     enabled fatal_warnings && exit 1
7084 fi
7085
7086 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7087
7088 esc(){
7089     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7090 }
7091
7092 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7093
7094 enabled stripping || strip="echo skipping strip"
7095 enabled stripping || striptype=""
7096
7097 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7098
7099 cat > ffbuild/config.mak <<EOF
7100 # Automatically generated by configure - do not modify!
7101 ifndef FFMPEG_CONFIG_MAK
7102 FFMPEG_CONFIG_MAK=1
7103 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7104 prefix=$prefix
7105 LIBDIR=\$(DESTDIR)$libdir
7106 SHLIBDIR=\$(DESTDIR)$shlibdir
7107 INCDIR=\$(DESTDIR)$incdir
7108 BINDIR=\$(DESTDIR)$bindir
7109 DATADIR=\$(DESTDIR)$datadir
7110 DOCDIR=\$(DESTDIR)$docdir
7111 MANDIR=\$(DESTDIR)$mandir
7112 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7113 INSTALL_NAME_DIR=$install_name_dir
7114 SRC_PATH=$source_path
7115 SRC_LINK=$source_link
7116 ifndef MAIN_MAKEFILE
7117 SRC_PATH:=\$(SRC_PATH:.%=..%)
7118 endif
7119 CC_IDENT=$cc_ident
7120 ARCH=$arch
7121 INTRINSICS=$intrinsics
7122 EXTERN_PREFIX=$extern_prefix
7123 CC=$cc
7124 CXX=$cxx
7125 AS=$as
7126 OBJCC=$objcc
7127 LD=$ld
7128 DEPCC=$dep_cc
7129 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7130 DEPAS=$as
7131 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7132 X86ASM=$x86asmexe
7133 DEPX86ASM=$x86asmexe
7134 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7135 AR=$ar
7136 ARFLAGS=$arflags
7137 AR_O=$ar_o
7138 AR_CMD=$ar
7139 NM_CMD=$nm
7140 RANLIB=$ranlib
7141 STRIP=$strip
7142 STRIPTYPE=$striptype
7143 NVCC=$nvcc
7144 CP=cp -p
7145 LN_S=$ln_s
7146 CPPFLAGS=$CPPFLAGS
7147 CFLAGS=$CFLAGS
7148 CXXFLAGS=$CXXFLAGS
7149 OBJCFLAGS=$OBJCFLAGS
7150 ASFLAGS=$ASFLAGS
7151 NVCCFLAGS=$nvccflags
7152 AS_C=$AS_C
7153 AS_O=$AS_O
7154 OBJCC_C=$OBJCC_C
7155 OBJCC_E=$OBJCC_E
7156 OBJCC_O=$OBJCC_O
7157 CC_C=$CC_C
7158 CC_E=$CC_E
7159 CC_O=$CC_O
7160 CXX_C=$CXX_C
7161 CXX_O=$CXX_O
7162 NVCC_C=$NVCC_C
7163 NVCC_O=$NVCC_O
7164 LD_O=$LD_O
7165 X86ASM_O=$X86ASM_O
7166 LD_LIB=$LD_LIB
7167 LD_PATH=$LD_PATH
7168 DLLTOOL=$dlltool
7169 WINDRES=$windres
7170 DEPWINDRES=$dep_cc
7171 DOXYGEN=$doxygen
7172 LDFLAGS=$LDFLAGS
7173 LDEXEFLAGS=$LDEXEFLAGS
7174 LDSOFLAGS=$LDSOFLAGS
7175 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7176 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7177 X86ASMFLAGS=$X86ASMFLAGS
7178 BUILDSUF=$build_suffix
7179 PROGSSUF=$progs_suffix
7180 FULLNAME=$FULLNAME
7181 LIBPREF=$LIBPREF
7182 LIBSUF=$LIBSUF
7183 LIBNAME=$LIBNAME
7184 SLIBPREF=$SLIBPREF
7185 SLIBSUF=$SLIBSUF
7186 EXESUF=$EXESUF
7187 EXTRA_VERSION=$extra_version
7188 CCDEP=$CCDEP
7189 CXXDEP=$CXXDEP
7190 CCDEP_FLAGS=$CCDEP_FLAGS
7191 ASDEP=$ASDEP
7192 ASDEP_FLAGS=$ASDEP_FLAGS
7193 X86ASMDEP=$X86ASMDEP
7194 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7195 CC_DEPFLAGS=$CC_DEPFLAGS
7196 AS_DEPFLAGS=$AS_DEPFLAGS
7197 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7198 HOSTCC=$host_cc
7199 HOSTLD=$host_ld
7200 HOSTCFLAGS=$host_cflags
7201 HOSTCPPFLAGS=$host_cppflags
7202 HOSTEXESUF=$HOSTEXESUF
7203 HOSTLDFLAGS=$host_ldflags
7204 HOSTEXTRALIBS=$host_extralibs
7205 DEPHOSTCC=$host_cc
7206 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7207 HOSTCCDEP=$HOSTCCDEP
7208 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7209 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7210 HOSTCC_C=$HOSTCC_C
7211 HOSTCC_O=$HOSTCC_O
7212 HOSTLD_O=$HOSTLD_O
7213 TARGET_EXEC=$target_exec $target_exec_args
7214 TARGET_PATH=$target_path
7215 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7216 CFLAGS-ffplay=${sdl2_cflags}
7217 CFLAGS_HEADERS=$CFLAGS_HEADERS
7218 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7219 EXTRALIBS=$extralibs
7220 COMPAT_OBJS=$compat_objs
7221 INSTALL=$install
7222 LIBTARGET=${LIBTARGET}
7223 SLIBNAME=${SLIBNAME}
7224 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7225 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7226 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7227 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7228 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7229 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7230 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7231 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7232 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7233 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7234 NOREDZONE_FLAGS=$noredzone_flags
7235 LIBFUZZER_PATH=$libfuzzer_path
7236 IGNORE_TESTS=$ignore_tests
7237 EOF
7238
7239 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7240
7241 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7242     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7243 done
7244
7245 cat > $TMPH <<EOF
7246 /* Automatically generated by configure - do not modify! */
7247 #ifndef FFMPEG_CONFIG_H
7248 #define FFMPEG_CONFIG_H
7249 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7250 #define FFMPEG_LICENSE "$(c_escape $license)"
7251 #define CONFIG_THIS_YEAR 2018
7252 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7253 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7254 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7255 #define av_restrict $restrict_keyword
7256 #define EXTERN_PREFIX "${extern_prefix}"
7257 #define EXTERN_ASM ${extern_prefix}
7258 #define BUILDSUF "$build_suffix"
7259 #define SLIBSUF "$SLIBSUF"
7260 #define HAVE_MMX2 HAVE_MMXEXT
7261 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7262 EOF
7263
7264 test -n "$assert_level" &&
7265     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7266
7267 test -n "$malloc_prefix" &&
7268     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7269
7270 if enabled x86asm; then
7271     append config_files $TMPASM
7272     cat > $TMPASM <<EOF
7273 ; Automatically generated by configure - do not modify!
7274 EOF
7275 fi
7276
7277 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7278
7279
7280 mkdir -p doc
7281 mkdir -p tests
7282 mkdir -p tests/api
7283 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7284
7285 print_config ARCH_   "$config_files" $ARCH_LIST
7286 print_config HAVE_   "$config_files" $HAVE_LIST
7287 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7288                                      $CONFIG_EXTRA      \
7289                                      $ALL_COMPONENTS    \
7290
7291 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7292 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7293
7294 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7295 cp_if_changed $TMPH config.h
7296 touch ffbuild/.config
7297
7298 enabled x86asm && cp_if_changed $TMPASM config.asm
7299
7300 cat > $TMPH <<EOF
7301 /* Generated by ffmpeg configure */
7302 #ifndef AVUTIL_AVCONFIG_H
7303 #define AVUTIL_AVCONFIG_H
7304 EOF
7305
7306 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7307
7308 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7309
7310 cp_if_changed $TMPH libavutil/avconfig.h
7311
7312 # full_filter_name_foo=vf_foo
7313 # full_filter_name_bar=asrc_bar
7314 # ...
7315 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7316
7317 # generate the lists of enabled components
7318 print_enabled_components(){
7319     file=$1
7320     struct_name=$2
7321     name=$3
7322     shift 3
7323     echo "static const $struct_name * const $name[] = {" > $TMPH
7324     for c in $*; do
7325         if enabled $c; then
7326             case $name in
7327                 filter_list)
7328                     eval c=\$full_filter_name_${c%_filter}
7329                 ;;
7330                 indev_list)
7331                     c=${c%_indev}_demuxer
7332                 ;;
7333                 outdev_list)
7334                     c=${c%_outdev}_muxer
7335                 ;;
7336             esac
7337             printf "    &ff_%s,\n" $c >> $TMPH
7338         fi
7339     done
7340     if [ "$name" = "filter_list" ]; then
7341         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7342             printf "    &ff_%s,\n" $c >> $TMPH
7343         done
7344     fi
7345     echo "    NULL };" >> $TMPH
7346     cp_if_changed $TMPH $file
7347 }
7348
7349 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7350 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7351 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7352 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7353 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7354 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7355 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7356 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7357 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7358
7359 # Settings for pkg-config files
7360
7361 cat > $TMPH <<EOF
7362 # Automatically generated by configure - do not modify!
7363 shared=$shared
7364 build_suffix=$build_suffix
7365 prefix=$prefix
7366 libdir=$libdir
7367 incdir=$incdir
7368 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7369 source_path=${source_path}
7370 LIBPREF=${LIBPREF}
7371 LIBSUF=${LIBSUF}
7372 extralibs_avutil="$avutil_extralibs"
7373 extralibs_avcodec="$avcodec_extralibs"
7374 extralibs_avformat="$avformat_extralibs"
7375 extralibs_avdevice="$avdevice_extralibs"
7376 extralibs_avfilter="$avfilter_extralibs"
7377 extralibs_avresample="$avresample_extralibs"
7378 extralibs_postproc="$postproc_extralibs"
7379 extralibs_swscale="$swscale_extralibs"
7380 extralibs_swresample="$swresample_extralibs"
7381 EOF
7382
7383 for lib in $LIBRARY_LIST; do
7384     lib_deps="$(eval echo \$${lib}_deps)"
7385     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7386 done
7387
7388 cp_if_changed $TMPH ffbuild/config.sh